EP3139015B1 - Water outlet housing - Google Patents

Water outlet housing 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
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EP
European Patent Office
Prior art keywords
water
housing
temperature sensor
water outlet
sensor
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EP16186682.7A
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German (de)
French (fr)
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EP3139015A1 (en
Inventor
Olivier Debrois
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Renault SAS
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Renault SAS
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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.

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

Description

La présente invention concerne, de manière générale, le circuit de refroidissement d'un moteur à combustion interne et se rapporte plus particulièrement aux boîtiers de sortie d'eau.The present invention generally relates to the cooling circuit of an internal combustion engine and relates more particularly to the water outlet housings.

L'invention se réfère, plus précisément, aux boîtiers de sortie d'eau réalisés en matière plastique.The invention refers, more specifically, to the water outlet boxes made of plastic material.

Généralement, un véhicule automobile est équipé d'un circuit de refroidissement destiné à réguler la température du moteur à combustion interne dont il est doté, et à assurer son bon fonctionnement. L'abaissement de sa température se fait par le passage d'un liquide de refroidissement, dont la circulation est générée par une pompe. Le liquide est conventionnellement appelé eau, mais correspond la plupart du temps à un liquide réfrigérant.Generally, 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.

Le circuit de refroidissement est en général pourvu d'un boîtier de sortie d'eau, se présentant sous la forme d'une enceinte, et comportant un thermostat et un capteur de température. Le boîtier comprend également une entrée apte à recevoir l'eau venant du moteur, ainsi que deux sorties pour la redirection de cette eau vers un radiateur et vers un aérotherme.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.

Lorsque le moteur est chaud, il peut être nécessaire, soit de stabiliser sa température, soit de le refroidir. Dans ce cas, la température élevée de l'eau venant du moteur engendre le mouvement d'une portion du thermostat, qui se rétracte, provoquant l'ouverture de la sortie vers le radiateur. Ce dernier, associé à un ventilateur, refroidit l'eau qui le traverse, avant que celle-ci soit redirigée vers le moteur.When the engine is hot, it may be necessary to either stabilize its temperature or cool it. In this case, 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.

Au contraire, lorsque le moteur est froid, il peut être nécessaire d'empêcher le refroidissement de l'eau qui le traverse, afin notamment de garantir son démarrage rapide. Dans ce cas, l'eau venant du moteur est froide, ce qui engendre le mouvement inverse de la portion du thermostat, qui se dilate, et qui a pour conséquence de bloquer la circulation de l'eau vers le radiateur. Le circuit emprunté par l'eau est plus petit que dans le cas précédent. Aussi, le boîtier est généralement doté d'une troisième sortie dite sortie de dérivation ou sortie « by-pass », connectée à un circuit de dérivation. Le mouvement du thermostat provoque en parallèle l'ouverture de la sortie de dérivation. Par conséquent, lorsque le débit d'eau est trop important, l'eau peut circuler à la fois à travers la sortie de dérivation et la sortie vers l'aérotherme, menant au moteur.On the other hand, when the engine is cold, it may be necessary to prevent the cooling of the water flowing through it, in particular to guarantee its rapid start. In this case, the water coming from the engine is cold, which causes the opposite movement of the portion of the thermostat, which expands, and which has the consequence of block the flow of water to the radiator. The circuit taken by the water is smaller than in the previous case. Also, the housing is generally provided with a third output called bypass output or output "bypass", connected to a branch circuit. The movement of the thermostat causes parallel opening of the bypass outlet. Therefore, when the water flow is too great, water can flow both through the bypass outlet and the outlet to the heater, leading to the motor.

En outre, l'eau circule par l'aérotherme, destiné à assurer le chauffage de l'habitacle, et ce en permanence, que la sortie vers le radiateur soit ouverte ou fermée.In addition, 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.

D'autre part, le capteur de température, localisé au niveau du boîtier de sortie d'eau, joue un rôle majeur, en permettant le maintien de la température optimale à tous les régimes de fonctionnement du moteur, notamment en actionnant le moteur électrique du ventilateur associé au radiateur.On the other hand, 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.

A cet égard, le capteur est associé au circuit de refroidissement par montage sur le boîtier de sortie d'eau. Un joint torique est intercalé entre le boîtier et le capteur afin de prévenir les risques de fuite, et une agrafe est ajoutée pour maintenir plus efficacement les deux éléments.In this regard, the sensor 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.

Toutefois, malgré la présence d'un joint, les risques de fuite d'un tel boîtier ne sont pas totalement éliminés.However, despite the presence of a seal, the risk of leakage of such a housing is not completely eliminated.

De plus, lors d'une intervention de maintenance, il peut être nécessaire d'ôter le capteur du boîtier. L'espace libre dans le compartiment moteur du véhicule, à proximité du boîtier, est faible, ce qui rend le démontage peu aisé. Par ailleurs, cette manipulation après-vente implique de conserver cet espace libre, qui ne peut alors pas être envisagé dans le cadre d'une autre fonction.In addition, during a maintenance intervention, it may be necessary to remove the sensor from the housing. The free space in the engine compartment of the vehicle, near the housing, is low, which makes disassembly easy. Moreover, this after-sales manipulation involves keeping this free space, which can not then be considered in the context of another function.

Le document FR2774423 A1 décrit un boîtier d'eau selon le préambule de la revendication 1.The document FR2774423 A1 discloses a water box according to the preamble of claim 1.

L'invention a donc pour but de remédier à ces inconvénients et de proposer un boîtier de sortie d'eau dont les risques de fuite sont évités et les problèmes rencontrés lors d'une intervention de maintenance sur celui-ci, comme précédemment décrits, écartés.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. .

Un boîtier de sortie d'eau selon l'invention est défini dans la revendication 1.A water outlet housing according to the invention is defined in claim 1.

On pourra prévoir que le soudage soit réalisé par soudure miroir.It can be provided that the welding is performed by mirror welding.

Selon un autre mode de réalisation, le soudage correspond à un soudage par vibration.According to another embodiment, the welding corresponds to vibration welding.

De préférence, le capteur de température est localisé de manière à être au contact direct et continu de l'eau.Preferably, the temperature sensor is located so as to be in direct and continuous contact with the water.

Selon une autre caractéristique, le capteur de température peut s'étendre selon l'axe de l'entrée d'eau venant du moteur.According to another characteristic, the temperature sensor may extend along the axis of the water inlet coming from the engine.

L'invention se rapporte aussi à un véhicule automobile pourvu d'un circuit de refroidissement comprenant un boîtier de sortie d'eau selon la revendication 1.The invention also relates to a motor vehicle provided with a cooling circuit comprising a water outlet housing according to claim 1.

D'autres buts, avantages et caractéristiques ressortiront de la description qui va suivre, donnée à titre purement illustratif et faite en référence aux dessins annexés sur les lesquels :

  • la figure 1 est une vue en perspective d'un boîtier de sortie d'eau selon l'invention ;
  • la figure 2 est une vue en coupe longitudinale d'un boîtier selon l'invention, comprenant un capteur de température intégré au boîtier par surmoulage ; et
  • la figure 3 une vue en coupe longitudinale d'un boîtier selon l'invention, comprenant un capteur de température intégré au boîtier par soudage.
Other objects, advantages and features will emerge from the description which follows, given purely by way of illustration and with reference to the appended drawings, in which:
  • the figure 1 is a perspective view of a water outlet housing according to the invention;
  • the figure 2 is a longitudinal sectional view of a housing according to the invention, comprising a temperature sensor integrated into the housing by overmolding; and
  • the figure 3 a longitudinal sectional view of a housing according to the invention, comprising a temperature sensor integrated into the housing by welding.

Comme illustré aux figures 1 à 3, un boîtier de sortie d'eau selon l'invention est désigné par la référence numérique générale 1. Un tel boîtier 1, réalisé en matière plastique, est destiné à équiper le circuit de refroidissement, non représenté, d'un véhicule automobile pourvu d'un moteur à combustion interne.As illustrated in Figures 1 to 3 , a water outlet housing according to the invention is designated by the general numerical reference 1. Such 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.

Le boîtier 1 comprend une enceinte 2 creuse comportant trois sorties 3, 4 et 5 pour la redirection d'eau. De préférence, chaque sortie correspond à un conduit de forme cylindrique, connecté à l'enceinte 2. Les extrémités libres 19, 20 et 21 des trois conduits 3, 4 et 5 sont respectivement destinées à être raccordées à un radiateur, un aérotherme et un circuit de dérivation, dont est pourvu le circuit de refroidissement.The housing 1 comprises a hollow chamber 2 having three outlets 3, 4 and 5 for the redirection of water. Preferably, 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.

Comme dans l'exemple illustré, le conduit 3 peut s'étendre dans le prolongement de l'enceinte 2. De plus, le conduit 4 peut être formé de deux portions 4a et 4b. La portion 4a raccorde le conduit 4 à l'enceinte 2 et la portion 4b s'étend parallèlement au conduit 3. Le conduit 5 peut quant à lui être formé de deux portions 5a et 5b où la portion 5a raccorde le conduit 5 à l'enceinte 2. Les portions 5a et 5b s'étendent parallèlement au conduit 3, et le diamètre de la portion 5a peut être légèrement supérieur au diamètre de la portion 5b.As in the example illustrated, the duct 3 may extend in the extension of the chamber 2. In addition, 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.

Par ailleurs, l'agencement et la direction des conduits dépendent de l'encombrement dans le compartiment moteur, autour du boîtier 1, de sorte que l'on ne sort pas du cadre de l'invention si l'orientation des conduits 3, 4 et 5 diffère de celle illustré aux figures 1 à 3.Moreover, 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 .

On notera que le raccordement des trois extrémités libres 19, 20 et 21 des conduits 3, 4 et 5 aux trois éléments du circuit peut être réalisé par l'intermédiaire de conduits supplémentaires, suffisamment longs.It will be noted that the 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.

De préférence, le boîtier 1 comprend un élément de contact 6. Dans l'exemple illustré, l'élément 6 est une surface plane fixée à l'enceinte 2, et destinée à être apposée sur la culasse du moteur du véhicule. Des orifices 7, 8, 9 et 10 peuvent être ménagés dans l'élément 6 de manière à recevoir des moyens de fixation, non représentés. Ces moyens de fixations comprennent avantageusement des vis, et sont destinés au maintien du boîtier 1 sur la culasse.Preferably, the housing 1 comprises a contact element 6. In the example illustrated, 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.

Comme dans l'exemple illustré, l'enceinte 2 peut être dotée d'une ouverture 11, pouvant être fermée de manière réversible à l'aide d'un bouchon 18. L'ouverture 11 est destinée à la purge manuelle du circuit de refroidissement.As in the illustrated example, 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 .

Le boîtier 1 comprend également un capteur de température 12, pouvant être logé dans une portion cylindrique 13, fixée à l'enceinte 2.The housing 1 also comprises a temperature sensor 12, which can be housed in a cylindrical portion 13, fixed to the enclosure 2.

Des renfoncements peuvent être ménagés sur le boîtier, de manière à pouvoir faciliter le montage les moyens de fixation au travers des orifices 7, 8, 9 et 10 pour la fixation du boîtier sur la culasse du moteur. Dans l'exemple illustré, les renfoncements 16 et 17 sont réalisés sur le conduit de sortie d'eau 3 pour faciliter l'accès aux orifices 8 et 9.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. In the illustrated example, the recesses 16 and 17 are made on the water outlet duct 3 to facilitate access to the orifices 8 and 9.

En référence aux figures 2 et 3 qui illustrent une coupe longitudinale du boîtier 1, le boîtier 1 comprend une entrée d'eau 14 permettant le passage de l'eau depuis le moteur vers l'enceinte 2. De manière avantageuse, l'entrée 14 est ménagée dans l'élément de contact 6.With reference to figures 2 and 3 which illustrate a longitudinal section of the housing 1, the housing 1 comprises a water inlet 14 allowing the passage of water from the engine to the enclosure 2. From Advantageously, the inlet 14 is formed in the contact element 6.

De préférence, la portion cylindrique 13 est disposée sur le boîtier 1 de sorte que le capteur de température 12 soit au contact direct et continu de l'eau présente dans l'enceinte 2.Preferably, 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.

En outre, l'enceinte 2 renferme un thermostat 15, agencé de manière à pouvoir contrôler le passage de l'eau de l'enceinte 2 vers le radiateur, par l'intermédiaire de la sortie 3. Dans l'exemple illustré, l'axe longitudinal du thermostat s'étend perpendiculairement à l'axe longitudinal du capteur 12.In addition, 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. In the example shown, the longitudinal axis of the thermostat extends perpendicular to the longitudinal axis of the sensor 12.

On notera que le capteur est, de préférence, disposé à l'opposé de l'entrée d'eau 14 du boîtier 1.Note that the sensor is preferably arranged opposite the water inlet 14 of the housing 1.

Le boîtier 1 représenté sur la figure 2 comprend un capteur de température 12 intégré de manière définitive au boîtier 1, et ce par surmoulage.The housing 1 shown on the figure 2 comprises a temperature sensor 12 permanently integrated in the housing 1, and by overmolding.

Par intégration définitive, on entend une fixation telle que le capteur 12 ne peut être séparé du boîtier 1 sans destruction du boîtier 1 ou du capteur 12.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.

L'exemple illustré à la figure 3 diffère de l'exemple illustré à la figure 2 par le fait que le boîtier 1 comprend un capteur de température 12 non pas obtenu par surmoulage, mais par soudage. On peut voir à la figure 3 que le capteur 12 est avantageusement soudé à la portion cylindrique 13, de sorte que deux prolongements 12a et 12b du capteur 12 sont intégrés à la portion 13.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. We can see at the figure 3 that 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.

On notera que le soudage pourra être réalisé par une méthode de soudure miroir ou encore par une méthode de soudage par vibration.Note that the welding may be performed by a mirror welding method or by a vibration welding method.

L'invention se rapporte également au procédé de fabrication d'un boîtier de sortie d'eau 1 comme précédemment décrit, comprenant une étape dans laquelle le capteur de température 12 est définitivement intégré au boîtier 1.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.

Selon un mode de réalisation, l'étape d'intégration du capteur 12 au boîtier est une étape de surmoulage. Le boîtier 1 est formé autour du capteur de température 12.According to one embodiment, the step of integrating the sensor 12 to the housing is an overmolding step. The housing 1 is formed around the temperature sensor 12.

Selon un autre mode de réalisation, l'étape d'intégration du capteur 12 au boîtier est une étape de soudage. Le capteur de température 12 est soudé sur le boîtier 1.According to another embodiment, the step of integrating the sensor 12 to the housing is a welding step. The temperature sensor 12 is welded to the housing 1.

En outre, l'invention concerne également un véhicule automobile dont le circuit de refroidissement comprend un boîtier de sortie d'eau 1 comme précédemment décrit.In addition, the invention also relates to a motor vehicle whose cooling circuit comprises a water outlet housing 1 as previously described.

La fabrication d'un boîtier selon l'invention est moins coûteuse que la fabrication d'un boîtier classique. Elle ne nécessite pas l'ajout d'un joint torique entre le capteur 12 et le boîtier 1, ni l'ajout d'une agrafe pour maintenir les deux éléments. L'étape de démontage du capteur 12 sur le boîtier 1 est supprimée. Ceci permet ainsi d'utiliser l'espace anciennement destiné au démontage, dans le cadre d'une nouvelle fonction.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.

De plus, l'intégration définitive du capteur de température et la suppression du joint torique permet d'éliminer les risques de fuite.In addition, the definitive integration of the temperature sensor and the removal of the O-ring eliminates the risk of leakage.

Claims (7)

  1. Water outlet housing for a cooling circuit of an internal combustion engine, made of plastic material, comprising a thermostat (15), a temperature sensor (12), an inlet (14) for water coming from the engine, and three water outlets (3, 4, 5), the first outlet (4) being intended for supplying water to a fan heater, the second outlet (3) being intended for supplying a radiator and the third outlet (5) being intended for redirecting the water when the outlet (3) that is intended for supplying the radiator with water is closed by the thermostat (15), characterized in that it is obtained by a manufacturing method according to which the temperature sensor (12) is permanently integrated into the housing, in such a way that the temperature sensor (12) cannot be separated from the housing without destroying either the housing or the temperature sensor, by means of a step of overmoulding the housing around the sensor (12) or of welding said sensor.
  2. Water outlet housing according to Claim 1, characterized in that the welding is carried out by hot plate welding or by vibration.
  3. Water outlet housing according to Claim 1 or 2, characterized in that it comprises a hollow enclosure (2), the inlet (14) allowing the water to pass from the engine to the enclosure (2).
  4. Water outlet housing according to Claim 3, characterized in that the temperature sensor (12) is located so as to be in direct and continuous contact with the water present in the enclosure (2) that encloses the thermostat (15).
  5. Water outlet housing according to any one of the preceding claims, characterized in that the temperature sensor (12) extends along the axis of the inlet (14) for water coming from the engine.
  6. Water outlet housing according to Claim 4 or 5, characterized in that the longitudinal axis of the thermostat (15) extends perpendicular to the longitudinal axis of the sensor (12).
  7. Motor vehicle provided with a cooling circuit comprising a water outlet housing (1) according to any one of the preceding claims.
EP16186682.7A 2015-09-02 2016-08-31 Water outlet housing Active EP3139015B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1558128A FR3040434B1 (en) 2015-09-02 2015-09-02 WATER OUTLET BOX

Publications (2)

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

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ID=54291534

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Application Number Title Priority Date Filing Date
EP16186682.7A Active EP3139015B1 (en) 2015-09-02 2016-08-31 Water outlet housing

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EP (1) EP3139015B1 (en)
FR (1) FR3040434B1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2774423A1 (en) * 1998-02-02 1999-08-06 Bailly Comte Ets Thermostat housing for motor vehicle cooling circuit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2711393B1 (en) * 1993-10-20 1996-01-12 Jaeger System comprising a temperature measurement, in particular on plastic tubing.
DE29820453U1 (en) * 1998-11-17 1999-02-25 Henschel Kunststofftechnik Gmbh, 29693 Hodenhagen Temperature sensor
EP1714014B1 (en) * 2003-12-19 2011-03-16 Behr GmbH & Co. KG Circuit arrangement for the cooling of charge air and method for operation of such a circuit arrangement
DE102005052559A1 (en) * 2005-11-02 2007-05-10 Behr Gmbh & Co. Kg Adjustable drive for a motor vehicle, in particular for a coolant pump
IL187922A (en) * 2007-12-06 2012-01-31 Eitan Rivlin Frictionless pressure balanced proportioning valve assembly
DE202012004701U1 (en) * 2012-05-10 2012-06-27 Behr Thermot-Tronik Gmbh cooling system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2774423A1 (en) * 1998-02-02 1999-08-06 Bailly Comte Ets Thermostat housing for motor vehicle cooling circuit

Also Published As

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

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