EP2667030A1 - Electric compressor housing including a dissipating device, and compressor comprising such a housing - Google Patents

Electric compressor housing including a dissipating device, and compressor comprising such a housing Download PDF

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Publication number
EP2667030A1
EP2667030A1 EP13168501.8A EP13168501A EP2667030A1 EP 2667030 A1 EP2667030 A1 EP 2667030A1 EP 13168501 A EP13168501 A EP 13168501A EP 2667030 A1 EP2667030 A1 EP 2667030A1
Authority
EP
European Patent Office
Prior art keywords
compressor
housing
wall
face
plane
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Withdrawn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
EP13168501.8A
Other languages
German (de)
French (fr)
Inventor
Pierre Smal
Sébastien Douillard
Christian Schwartz
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.)
Valeo Systemes de Controle Moteur SAS
Original Assignee
Valeo Systemes de Controle Moteur SAS
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 Valeo Systemes de Controle Moteur SAS filed Critical Valeo Systemes de Controle Moteur SAS
Publication of EP2667030A1 publication Critical patent/EP2667030A1/en
Withdrawn legal-status Critical Current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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/5853—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps heat insulation or conduction
    • 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
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • 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
    • F04B39/121—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation
    • F04C29/047—Cooling of electronic devices installed inside the pump housing, e.g. inverters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/81—Sensor, e.g. electronic sensor for control or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/10—Voltage

Definitions

  • the technical sector of the present invention is that of housings for electric compressor constituting a refrigerant circuit fitted to a motor vehicle.
  • a refrigerant fluid is conventionally circulated inside an air conditioning circuit via a compressor.
  • this compressor is mechanical type because its rotation is operated by means of a pulley connected to the internal combustion engine by a belt.
  • hybrid vehicles that is to say with internal combustion engine coupled to an electric motor, or all electric, that is to say exclusively powered by an electric motor, is constantly increasing because of the rarefaction of fossil fuels which are the source of the fuel supplying the internal combustion engine fitted to the vehicles.
  • Compressors driven by a dedicated electric motor exist in the literature.
  • the document FR2814783A1 discloses a compressor comprising an electric motor controlled by a control circuit. The latter is mounted on an outer surface of a wall of a refrigerant suction passage. Cooling fins are formed on the inner surface of the wall, in order to cool the control device.
  • a first disadvantage of this known solution lies in the efficiency limited heat transfer between the wall and the refrigerant.
  • the object of the present invention is therefore to solve the disadvantages described above mainly by organizing differently the structure of the dissipation device, as well as its integration into the housing, in particular with respect to the other forms made on the housing.
  • the subject of the invention is therefore a housing of an electric compressor for a refrigerant circuit, comprising a wall capable of delimiting a first volume of the compressor in which the refrigerant circulates relative to a second volume of the compressor in which the refrigerant a control device of the electric motor, a first face of the wall facing the second volume being configured to receive the control device while a second face of the wall facing the first volume comprises a heat dissipation means, characterized by the fact that the heat dissipation means takes the form of a plurality of tubular elements coming from the second face.
  • the plurality of tubular elements makes it possible to significantly increase the heat exchange surface by allowing the refrigerant to circulate along the second face and between the tubular elements, the latter acting as disrupters of the flow of refrigerant for promote the heat exchange between the housing wall and the refrigerant.
  • At least one tubular element is formed by a solid tube of circular section made of material with the wall.
  • all the tubular elements are made on the same format, for example, the one explained above.
  • At least one tubular element extends along an axis perpendicular to a first plane in which the second face of the wall is inscribed.
  • Such an organization is of interest because the refrigerant fluid licks the wall in a direction parallel to, or substantially parallel to, the plane in which the second face extends.
  • the tubular elements are thus placed perpendicular to the flow of refrigerant fluid, so as to increase the heat exchange and turbulence.
  • the housing may comprise a peripheral edge formed by a first portion which opens out from the second face of the wall and a second portion which opens out from the first face of the wall, a length of the tubular elements measured. along the perpendicular axis being less than a length of the first portion, measured along the same axis from the second face. It is understood here that the tubular elements do not exceed the external dimensions of the housing.
  • the housing may comprise a bearing adapted to receive a bearing, the bearing emerging from the second face of the wall.
  • the bearing is terminated by an end which is part of a second plane separated from the first plane in which the second face is inscribed.
  • this second plane may be at a distance from the first plane which is less than the length of the first portion of the peripheral edge; or conversely, the second plane may be at a distance from the first plane which is greater than the length of the first portion of the peripheral edge.
  • the length of at least one tubular element is less than the distance separating the second plane from the first plane, the length of the tubular element being measured between the plane in which the second face and the free end of the tubular element concerned. It will be noted that all the tubular elements constituting the dissipation means can respect such a rule.
  • the plurality of tubular elements is distributed over the second face around the bearing.
  • the wall may comprise a through hole adapted to receive an electrical connector connecting the control device to the electric motor.
  • the housing may comprise a side formed at the periphery of the wall.
  • a flank forms, for example, a radial extension which originates on the peripheral edge.
  • the sidewall may include a first through hole arranged to receive a high voltage power supply connector and a second through hole arranged to receive an electrical signal connector.
  • the invention also relates to a compressor for a refrigerant circuit comprising a unit formed by a compression mechanism coupled to an electric motor, both of which are integrated in the compressor, said compressor comprising a housing incorporating any of the features presented hereinafter. above.
  • Such a compressor may include a high voltage power supply connector installed in a first hole through a sidewall of the housing, and an electrical signal connector installed in a second hole through said sidewall.
  • the compressor according to the invention may comprise an inlet of the refrigerant fluid arranged on the compressor so that the refrigerant circulates between the tubular elements, that is to say by licking an outer surface of the tubular element which extends along its axis.
  • the coolant is also in contact with the second face of the housing wall.
  • a first advantage of the invention lies in a significant increase in the heat exchange between the refrigerant and the wall, in particular because it can flow between a plurality of tubular elements integral with the wall. This multiplicity of elements thus generates turbulence in the refrigerant which prevents laminar flow, in favor of a turbulent flow of the refrigerant fluid.
  • Another advantage lies in reducing the impact of the dissipation device according to the invention on the axial size of the compressor.
  • the improvement of the heat exchange makes it possible to reduce the size of the dissipation device, which facilitates its integration on the compressor housing.
  • the figure 1 illustrates a housing 1 constituting an electric motor compressor for refrigerant circuit.
  • the housing 1 according to the invention is designed to delimit a first volume of the electric compressor relative to a second volume of the same electric compressor.
  • the first volume of the compressor is delimited by an envelope, in particular cylindrical, which encloses an electric motor connected to a compression mechanism.
  • the second volume of the compressor receives a control device of the electric motor installed in the first volume, such a device being for example an inverter.
  • the second volume is defined in particular by the housing 1 according to the invention and by a cover which caps the housing 1.
  • the structure of the compressor will be more widely detailed with reference to the figure 2 .
  • the housing 1 comprises a wall 2 interposed between the first volume and the second volume of the compressor.
  • This wall 2 is provided with an edge 3 formed at the periphery of the wall 2.
  • This peripheral edge 3 for example follows a circular shape and surrounds the wall 2.
  • This wall 2 is delimited on one side by a first face which faces the second volume where the control device of the electric motor is received.
  • the wall 2 is also delimited by a second face 4 opposite to the first face relative to the constituent material of the wall 2. This second face 4 is turned towards the first volume of the compressor, that is to say the volume in which circulates the refrigerant fluid compressed by this compressor.
  • the first face is configured to receive the control device of the electric motor in that it comprises at least one zone against which the control device can be applied, so as to transfer the calories of the control device to the wall 2, by contact against the first face of the wall.
  • the second face 4 is provided with a heat dissipation means 5 whose function is to transfer to the cooling fluid calories generated by the control device.
  • This means of heat dissipation 5 takes the form of a plurality of tubular elements 6 coming from the second face 4.
  • Such a tubular element is a piece made of material with the wall 2 and which extends along an axis. It is therefore in a same manufacturing step that the wall 4 and the tubular elements 6 are made.
  • the axis in which the tubular element 6 extends is orthogonal to a plane in which the second face 4, hereinafter referred to as the first plane, is inscribed.
  • the section of a tubular element 6, taken in a plane parallel to the first plane of the second wall 4, represents a percentage between 0.05 and 0.5% of the total surface of the second face 4.
  • a percentage allows to implant a large number of tubular elements 6 on the second face, which ensures an increase of exchange surface while limiting the length of the tubular elements.
  • a proper size of the compressor is maintained in its axial direction.
  • the percentage is 0.14%.
  • a tubular element 6 is formed by a solid tube of circular section and made of material with the wall.
  • the invention covers the case where the tube is hollow in its center, as well as any other section of this tube, for example triangular, square, rectangular or ovoid.
  • the wall 2, and more particularly the second face 4 extends in the first plane, the latter being substantially perpendicular to a longitudinal axis of the compressor, for example through its drive shaft located between the electric motor and the mechanism. compression.
  • the peripheral edge 3 is circular, but it extends perpendicularly to the first plane. It thus exceeds the first plane, on both sides of the wall 2, which makes it possible to form a first cavity delimited by the first face and a first portion 7 of the peripheral edge 3, as well as a second cavity delimited by the second side 4 and a second portion 8 of the peripheral edge 3.
  • the plurality of tubular elements 6 is, for example, integrally contained in this second cavity.
  • the tubular elements 6 are distributed on the second face 4 so as to form a plurality of rows, for example orthogonal to each other.
  • a tubular element 6 is in particular defined by its length, or extension of the second cavity. This length is measured between the first plane in which the second face 4 and the free end of the tubular element 6 fit. Preferably, the length of the tubular elements 6 is less than the length of the second portion 8 of the peripheral edge 3, measured between the first plane and an edge 9 ending this second portion 8 in a direction perpendicular to the first plane.
  • a bearing 10 adapted to receive a bearing.
  • a bearing 10 is formed by a portion of circular tube made of material with the wall 2.
  • This bearing 10 is installed in the center of the housing 1 and is arranged to accommodate a bearing which maintains one end of the drive shaft connecting the electric motor to the compression mechanism of the electric compressor.
  • An outer face 11 of the bearing 10 joins the second face 4 by a peripheral discharge 12.
  • the bearing 10 is terminated by an end 13 which is part of a second plane notably distinct from the first plane.
  • the entire bearing 10 is contained in the second cavity.
  • the second plane is at a distance from the first plane less than the distance between the first plane of the edge 9 bordering the second portion 8 of the peripheral edge 3.
  • the second plane could be at a distance the first plane greater than the distance between the first plane of the edge 9 bordering the second portion 8 of the peripheral edge 3.
  • the position of the second plane relative to the second portion 8 of the peripheral edge 3 is a function of the configuration of the drive shaft.
  • the tubular elements 6 are of a length less than the distance separating the end 13 of the bearing 10 from the first plane in which the second face 4 is inscribed.
  • the tubular elements 6 are distributed on the second face 4, around the bearing 10, preferably around the fillet 12.
  • the housing 1 may also comprise screwing studs 14 which, in this embodiment, are five in number. These are in contact with the second portion 8 of the peripheral edge 3 and are distributed according to identical angular sectors. These screwing studs 14 extend in a direction perpendicular to the first plane in which the second face 4 is part, and protrude from the edge 9, that is to say beyond the second portion 8 of the edge. device 3.
  • fixing studs 15 whose function is to receive fastening means of the control device against the first face. These fixing studs 15 extend in the second cavity, in a direction perpendicular to the first plane. The length of these fixing studs 15 is greater than the length of the tubular elements 6, but less than the distance separating the edge 9 from the first plane in which the second face 4 extends. However, the fixing studs 15 could have any other configuration. Indeed, the length of the fixing studs 15 depends on the fastening means used on the first face and the thickness of the wall 2.
  • an orifice 16 for example of circular section, which passes right through the wall 2.
  • This orifice 16 is arranged to receive an electrical connector which electrically connects the control device to the electric motor. of the compressor.
  • This orifice 16 is bordered by a groove 17 formed at the level of the second face 4, in view of receiving a sealing device between the electrical connector and the wall 2.
  • Two through holes are also formed immediately around the orifice 16, so as to be able to install a screw for fixing the electrical connector on the wall 2.
  • the housing 1 may further comprise a flank 18 formed at the outer periphery of the wall 2. Such a flank 18 originates on the peripheral edge 3 and extends radially outwardly of the housing 1.
  • the first cavity receiving the control device of the electric motor can advantageously be bordered by this sidewall 18, a part of this control device extending in a portion of the first cavity surrounded by the sidewall 18.
  • the housing 1 may include a first hole 19 which passes through the wall constituting the sidewall 18.
  • This hole has a section, for example, circular, and is intended to receive a high-voltage power supply electrical connector.
  • the flank 18 may also be provided with a second through hole 20, the section of which is in particular square or rectangular.
  • This second hole 20 is configured to receive an electrical signal connector, especially dedicated to the provision of control information, control and / or diagnosis of the compressor.
  • the material used for the manufacture of the housing 1 detailed above, which comprises the wall 2 provided with its plurality of tubular elements 6, may for example be an aluminum or magnesium alloy.
  • the manufacture of this housing is advantageously carried out at least by a foundry operation.
  • the figure 2 illustrates the housing 1 according to the invention installed on a compressor with integrated electric motor 21.
  • This compressor comprises a first housing 22 which houses a compression mechanism, the latter may advantageously be of the type with pistons, vane or orbitant spirals.
  • a central housing 23 which surrounds an electric motor, the electric motor and the compression mechanism thus forming a unit of the electric compressor 21.
  • Such a unit is thus installed inside the first housing 22 and the central housing 23.
  • the central housing 23 also comprises two fixing devices 31 formed on an outer face of this central housing 23.
  • the housing 1 is secured to one end 30 of the central housing 23.
  • the first cavity defined by the first portion 7 of the peripheral edge 3 and by the sidewall 18 is closed by a cover 24 secured to the housing 1 by a multiplicity of securing means.
  • the first housing 22, the central housing 23 and the housing 1 are thus aligned in a longitudinal direction 27 of the electric compressor 21.
  • the electric compressor 21 comprises the high voltage electrical supply connector, here referenced 25, installed in the first hole through the sidewall 18 of the housing 1. Although invisible in this figure, the same applies to the electrical signal connector installed in the second hole through said flank.
  • the first housing 22 also includes an outlet port 28 through which the coolant exits the electric compressor 21, after being compressed by the compression mechanism.
  • An inlet 29 of the refrigerant fluid is provided on the central housing 23, adjacent, possibly immediately adjacent, to the end 30 of the central housing.
  • This inlet orifice 29 extends in a direction perpendicular to the longitudinal direction 27 of the electric compressor 21. Such a positioning of the inlet orifice 29 ensures that the tubular elements forming the heat dissipation means will be licked at their ends. and the along their peripheries by the refrigerant which enters the electric compressor 21.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Motor Or Generator Frames (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The housing (1) has a wall (2) for delimiting first volume of a compressor in which a refrigerant circulates relative to second volume of the compressor. A control device of an electric motor extends at the second volume. A face of the wall facing the second volume is configured to receive the control device while a second face (4) of the wall facing the first volume comprises a heat dissipation unit (5). The heat dissipation unit takes a form of tubular elements (6) originating from the second face. The element is formed by a solid tube of circular section made of same material as the wall. The control device is designed as an inverter. An independent claim is also included for a compressor for a refrigerant circuit.

Description

Le secteur technique de la présente invention est celui des boîtiers pour compresseur électrique constitutif d'un circuit de fluide réfrigérant équipant un véhicule automobile.The technical sector of the present invention is that of housings for electric compressor constituting a refrigerant circuit fitted to a motor vehicle.

Un fluide réfrigérant est classiquement mis en circulation à l'intérieur d'un circuit de climatisation par l'intermédiaire d'un compresseur. Dans les véhicules équipés d'un moteur à combustion interne, ce compresseur est de type mécanique, car sa rotation est opérée au moyen d'une poulie reliée au moteur à combustion interne par une courroie.A refrigerant fluid is conventionally circulated inside an air conditioning circuit via a compressor. In vehicles equipped with an internal combustion engine, this compressor is mechanical type because its rotation is operated by means of a pulley connected to the internal combustion engine by a belt.

Le nombre de véhicules hybrides, c'est-à-dire à moteur à combustion interne couplé à un moteur électrique, ou tout électrique, c'est-à-dire exclusivement propulsé par un moteur électrique, est en constante augmentation du fait de la raréfaction des énergies fossiles qui sont à l'origine du carburant alimentant le moteur à combustion interne équipant les véhicules.The number of hybrid vehicles, that is to say with internal combustion engine coupled to an electric motor, or all electric, that is to say exclusively powered by an electric motor, is constantly increasing because of the rarefaction of fossil fuels which are the source of the fuel supplying the internal combustion engine fitted to the vehicles.

L'énergie mécanique fournie habituellement par le moteur à combustion interne est donc moins disponible, ou complètement indisponible pour le cas des véhicules tout électrique.The mechanical energy usually supplied by the internal combustion engine is therefore less available, or completely unavailable for the case of all-electric vehicles.

Des compresseurs entrainés par un moteur électrique dédié existent dans la littérature. Le document FR2814783A1 divulgue un compresseur comprenant un moteur électrique contrôlé par un circuit de commande. Ce dernier est monté sur une surface extérieure d'une paroi d'un passage d'aspiration de fluide réfrigérant. Des ailettes de refroidissement sont formées sur la surface intérieure de la paroi, en vu de refroidir le dispositif de commande.Compressors driven by a dedicated electric motor exist in the literature. The document FR2814783A1 discloses a compressor comprising an electric motor controlled by a control circuit. The latter is mounted on an outer surface of a wall of a refrigerant suction passage. Cooling fins are formed on the inner surface of the wall, in order to cool the control device.

Un premier inconvénient de cette solution connue réside dans l'efficacité limitée du transfert thermique entre la paroi et le fluide réfrigérant.A first disadvantage of this known solution lies in the efficiency limited heat transfer between the wall and the refrigerant.

Un autre inconvénient réside dans l'encombrement généré par les ailettes de refroidissement divulguées dans ce document. Celles-ci conduisent indubitablement à une augmentation d'une dimension du compresseur mesurée selon l'axe de rotation de celui-ci.Another disadvantage is the space generated by the cooling fins disclosed in this document. These undoubtedly lead to an increase of one dimension of the compressor measured according to the axis of rotation thereof.

Le but de la présente invention est donc de résoudre les inconvénients décrits ci-dessus principalement en organisant différemment la structure du dispositif de dissipation, ainsi que son intégration dans le boîtier, en particulier par rapport aux autres formes réalisées sur le boîtier.The object of the present invention is therefore to solve the disadvantages described above mainly by organizing differently the structure of the dissipation device, as well as its integration into the housing, in particular with respect to the other forms made on the housing.

L'invention a donc pour objet un boîtier d'un compresseur électrique pour circuit de fluide réfrigérant, comprenant une paroi apte à délimiter un premier volume du compresseur dans lequel le fluide réfrigérant circule par rapport à un deuxième volume du compresseur dans lequel s'étend un dispositif de commande du moteur électrique, une première face de la paroi tournée vers le deuxième volume étant configurée pour recevoir le dispositif de commande alors qu'une deuxième face de la paroi tournée vers le premier volume comprend un moyen de dissipation thermique, caractérisé par le fait que le moyen de dissipation thermique prend la forme d'une pluralité d'éléments tubulaires issus de la deuxième face. La pluralité d'éléments tubulaires permet d'augmenter significativement la surface d'échange thermique en autorisant une circulation du fluide réfrigérant le long de la deuxième face et entre les éléments tubulaires, ces dernier agissant comme des perturbateurs de l'écoulement du fluide réfrigérant pour favoriser l'échange thermique entre la paroi du boîtier et le fluide réfrigérant.The subject of the invention is therefore a housing of an electric compressor for a refrigerant circuit, comprising a wall capable of delimiting a first volume of the compressor in which the refrigerant circulates relative to a second volume of the compressor in which the refrigerant a control device of the electric motor, a first face of the wall facing the second volume being configured to receive the control device while a second face of the wall facing the first volume comprises a heat dissipation means, characterized by the fact that the heat dissipation means takes the form of a plurality of tubular elements coming from the second face. The plurality of tubular elements makes it possible to significantly increase the heat exchange surface by allowing the refrigerant to circulate along the second face and between the tubular elements, the latter acting as disrupters of the flow of refrigerant for promote the heat exchange between the housing wall and the refrigerant.

Selon une première caractéristique de l'invention, au moins un élément tubulaire est formé par un tube plein de section circulaire issu de matière avec la paroi. Avantageusement, tous les éléments tubulaires sont réalisés sur le même format, par exemple, celui exposé ci-dessus.According to a first feature of the invention, at least one tubular element is formed by a solid tube of circular section made of material with the wall. Advantageously, all the tubular elements are made on the same format, for example, the one explained above.

Selon une deuxième caractéristique de l'invention, au moins un élément tubulaire s'étend le long d'un axe perpendiculaire à un premier plan dans lequel s'inscrit la deuxième face de la paroi. Une telle organisation présente un intérêt en raison du fait que le fluide réfrigérant vient lécher la paroi en suivant une direction parallèle, ou sensiblement parallèle, au plan dans lequel s'étend la deuxième face. Les éléments tubulaires sont ainsi placés perpendiculairement au flux de fluide réfrigérant, de sorte à augmenter l'échange thermique et les turbulences.According to a second characteristic of the invention, at least one tubular element extends along an axis perpendicular to a first plane in which the second face of the wall is inscribed. Such an organization is of interest because the refrigerant fluid licks the wall in a direction parallel to, or substantially parallel to, the plane in which the second face extends. The tubular elements are thus placed perpendicular to the flow of refrigerant fluid, so as to increase the heat exchange and turbulence.

Selon une autre caractéristique de l'invention, le boîtier peut comprendre un bord périphérique formé par une première portion qui débouche de la deuxième face de la paroi et une deuxième portion qui débouche de la première face de la paroi, une longueur des éléments tubulaires mesurée selon l'axe perpendiculaire étant inférieure à une longueur de la première portion, mesurée selon ce même axe à partir de la deuxième face. On comprend ici que les éléments tubulaires ne dépassent pas de l'encombrement externe du boîtier.According to another characteristic of the invention, the housing may comprise a peripheral edge formed by a first portion which opens out from the second face of the wall and a second portion which opens out from the first face of the wall, a length of the tubular elements measured. along the perpendicular axis being less than a length of the first portion, measured along the same axis from the second face. It is understood here that the tubular elements do not exceed the external dimensions of the housing.

Selon encore une caractéristique de l'invention, le boîtier peut comprendre un palier apte à recevoir un roulement, le palier débouchant de la deuxième face de la paroi.According to another characteristic of the invention, the housing may comprise a bearing adapted to receive a bearing, the bearing emerging from the second face of the wall.

Dans un tel cas, le palier est terminé par une extrémité qui s'inscrit dans un deuxième plan séparé du premier plan dans lequel s'inscrit la deuxième face. En fonction de la configuration du moteur du compresseur, en particulier de l'arbre du moteur, ce deuxième plan peut être à une distance du premier plan qui est inférieure à la longueur de la première portion du bord périphérique ; ou inversement, le deuxième plan peut être à une distance du premier plan qui est supérieure à la longueur de la première portion du bord périphérique.In such a case, the bearing is terminated by an end which is part of a second plane separated from the first plane in which the second face is inscribed. Depending on the configuration of the compressor motor, particularly the motor shaft, this second plane may be at a distance from the first plane which is less than the length of the first portion of the peripheral edge; or conversely, the second plane may be at a distance from the first plane which is greater than the length of the first portion of the peripheral edge.

Avantageusement, la longueur d'au moins un élément tubulaire est inférieure à la distance qui sépare le deuxième plan du premier plan, la longueur de l'élément tubulaire se mesurant entre le plan dans lequel s'inscrit la deuxième face et l'extrémité libre de l'élément tubulaire concerné. On notera que tous les éléments tubulaires constituant le moyen de dissipation peuvent respecter une telle règle.Advantageously, the length of at least one tubular element is less than the distance separating the second plane from the first plane, the length of the tubular element being measured between the plane in which the second face and the free end of the tubular element concerned. It will be noted that all the tubular elements constituting the dissipation means can respect such a rule.

Avantageusement encore, la pluralité d'éléments tubulaires est répartie sur la deuxième face autour du palier.Advantageously, the plurality of tubular elements is distributed over the second face around the bearing.

Selon un exemple de réalisation, la paroi peut comprendre un orifice traversant apte à recevoir un connecteur électrique reliant le dispositif de commande au moteur électrique.According to an exemplary embodiment, the wall may comprise a through hole adapted to receive an electrical connector connecting the control device to the electric motor.

Le boîtier peut comprendre un flanc ménagé à la périphérie de la paroi. Un tel flanc forme, par exemple, une extension radiale qui prend naissance sur le bord périphérique.The housing may comprise a side formed at the periphery of the wall. Such a flank forms, for example, a radial extension which originates on the peripheral edge.

Dans une telle situation, le flanc peut comprendre un premier trou traversant agencé pour recevoir un connecteur électrique d'alimentation haute tension et un deuxième trou traversant agencé pour recevoir un connecteur électrique de signal.In such a situation, the sidewall may include a first through hole arranged to receive a high voltage power supply connector and a second through hole arranged to receive an electrical signal connector.

L'invention vise également un compresseur pour circuit de fluide réfrigérant comprenant une unité formée par un mécanisme de compression accouplé à un moteur électrique, notamment tous deux intégrés dans le compresseur, ledit compresseur comprenant un boîtier incorporant l'une quelconque des caractéristiques présentées ci-dessus.The invention also relates to a compressor for a refrigerant circuit comprising a unit formed by a compression mechanism coupled to an electric motor, both of which are integrated in the compressor, said compressor comprising a housing incorporating any of the features presented hereinafter. above.

Un tel compresseur, appelé compresseur électrique, peut comprendre un connecteur d'alimentation électrique haute tension installé dans un premier trou traversant un flanc du boîtier, et un connecteur électrique de signal installé dans un deuxième trou traversant ledit flanc.Such a compressor, referred to as an electric compressor, may include a high voltage power supply connector installed in a first hole through a sidewall of the housing, and an electrical signal connector installed in a second hole through said sidewall.

Le compresseur selon l'invention peut comprendre un orifice d'entrée du fluide réfrigérant agencé sur le compresseur de manière à ce que le fluide réfrigérant circule entre les éléments tubulaires, c'est-à-dire en léchant une surface externe de l'élément tubulaire qui s'étend le long de son axe. Dans un tel cas, le fluide réfrigérant est également en contact avec la deuxième face de la paroi du boîtier.The compressor according to the invention may comprise an inlet of the refrigerant fluid arranged on the compressor so that the refrigerant circulates between the tubular elements, that is to say by licking an outer surface of the tubular element which extends along its axis. In such a case, the coolant is also in contact with the second face of the housing wall.

Un tout premier avantage selon l'invention réside dans une augmentation significative de l'échange thermique réalisé entre le fluide réfrigérant et la paroi, notamment grâce au fait que celui-ci peut circuler entre une multiplicité d'éléments tubulaires solidaires de la paroi. Cette multiplicité d'éléments génère ainsi des turbulences dans le fluide réfrigérant qui empêchent un écoulement laminaire, au profit d'un écoulement turbulent du fluide réfrigérant.A first advantage of the invention lies in a significant increase in the heat exchange between the refrigerant and the wall, in particular because it can flow between a plurality of tubular elements integral with the wall. This multiplicity of elements thus generates turbulence in the refrigerant which prevents laminar flow, in favor of a turbulent flow of the refrigerant fluid.

Un autre avantage réside dans une réduction de l'impact du dispositif de dissipation selon l'invention sur l'encombrement axial du compresseur. L'amélioration de l'échange thermique permet de diminuer la taille du dispositif de dissipation, ce qui facilite son intégration sur le boîtier du compresseur.Another advantage lies in reducing the impact of the dissipation device according to the invention on the axial size of the compressor. The improvement of the heat exchange makes it possible to reduce the size of the dissipation device, which facilitates its integration on the compressor housing.

D'autres caractéristiques, détails et avantages de l'invention ressortiront plus clairement à la lecture de la description donnée ci-après à titre indicatif en relation avec des dessins dans lesquels :

  • la figure 1 est une vue en perspective d'un boîtier selon l'invention,
  • la figure 2 est une vue en perspective d'un compresseur électrique intégrant un tel boîtier selon l'invention.
Other characteristics, details and advantages of the invention will emerge more clearly on reading the description given below as an indication in relation to drawings in which:
  • the figure 1 is a perspective view of a housing according to the invention,
  • the figure 2 is a perspective view of an electric compressor incorporating such a housing according to the invention.

Il faut noter que les figures exposent l'invention de manière détaillée pour mettre en oeuvre l'invention, lesdites figures pouvant bien entendu servir à mieux définir l'invention, le cas échéant.It should be noted that the figures disclose the invention in detail to implement the invention, said figures can of course be used to better define the invention, if any.

La figure 1 illustre un boîtier 1 constitutif d'un compresseur à moteur électrique pour circuit de fluide réfrigérant. Le boîtier 1 selon l'invention est conçu pour délimiter un premier volume du compresseur électrique par rapport à un deuxième volume de ce même compresseur électrique.The figure 1 illustrates a housing 1 constituting an electric motor compressor for refrigerant circuit. The housing 1 according to the invention is designed to delimit a first volume of the electric compressor relative to a second volume of the same electric compressor.

Le premier volume du compresseur est délimité par une enveloppe, notamment cylindrique, qui renferme un moteur électrique relié à un mécanisme de compression. Le deuxième volume du compresseur reçoit un dispositif de commande du moteur électrique installé dans le premier volume, un tel dispositif étant par exemple un onduleur. Le deuxième volume est notamment délimité par le boîtier 1 selon l'invention et par un couvercle qui vient coiffer le boîtier 1. La structure du compresseur sera plus largement détaillée en référence à la figure 2.The first volume of the compressor is delimited by an envelope, in particular cylindrical, which encloses an electric motor connected to a compression mechanism. The second volume of the compressor receives a control device of the electric motor installed in the first volume, such a device being for example an inverter. The second volume is defined in particular by the housing 1 according to the invention and by a cover which caps the housing 1. The structure of the compressor will be more widely detailed with reference to the figure 2 .

Le boîtier 1 comprend une paroi 2 interposée entre le premier volume et le deuxième volume du compresseur. Cette paroi 2 est pourvue d'un bord 3 ménagé à la périphérie de la paroi 2. Ce bord périphérique 3 suit par exemple une forme circulaire et entoure la paroi 2.The housing 1 comprises a wall 2 interposed between the first volume and the second volume of the compressor. This wall 2 is provided with an edge 3 formed at the periphery of the wall 2. This peripheral edge 3 for example follows a circular shape and surrounds the wall 2.

Cette paroi 2 est délimitée d'un côté par une première face qui est tournée vers le deuxième volume où est reçu le dispositif de commande du moteur électrique. La paroi 2 est également délimitée par une deuxième face 4 opposée à la première face par rapport à la matière constitutive de la paroi 2. Cette deuxième face 4 est tournée vers le premier volume du compresseur, c'est-à-dire le volume dans lequel circule le fluide réfrigérant comprimé par ce compresseur.This wall 2 is delimited on one side by a first face which faces the second volume where the control device of the electric motor is received. The wall 2 is also delimited by a second face 4 opposite to the first face relative to the constituent material of the wall 2. This second face 4 is turned towards the first volume of the compressor, that is to say the volume in which circulates the refrigerant fluid compressed by this compressor.

La première face est configurée pour recevoir le dispositif de commande du moteur électrique en ce sens qu'elle comprend au moins une zone contre laquelle le dispositif de commande peut être appliqué, de manière à transférer les calories du dispositif de commande vers la paroi 2, par contact contre la première face de la paroi.The first face is configured to receive the control device of the electric motor in that it comprises at least one zone against which the control device can be applied, so as to transfer the calories of the control device to the wall 2, by contact against the first face of the wall.

Selon l'invention, la deuxième face 4 est pourvue d'un moyen de dissipation thermique 5 dont la fonction est de transférer au fluide réfrigérant des calories générées par le dispositif de commande. Ce moyen de dissipation thermique 5 prend la forme d'une pluralité d'éléments tubulaires 6 issus de la deuxième face 4.According to the invention, the second face 4 is provided with a heat dissipation means 5 whose function is to transfer to the cooling fluid calories generated by the control device. This means of heat dissipation 5 takes the form of a plurality of tubular elements 6 coming from the second face 4.

Un tel élément tubulaire est une pièce issue de matière avec la paroi 2 et qui s'étend le long d'un axe. C'est donc selon une même étape de fabrication que la paroi 4 et les éléments tubulaires 6 sont réalisés. De manière avantageuse, l'axe dans lequel s'étend l'élément tubulaire 6 est orthogonal à un plan dans lequel s'inscrit la deuxième face 4, ci-après appelé premier plan.Such a tubular element is a piece made of material with the wall 2 and which extends along an axis. It is therefore in a same manufacturing step that the wall 4 and the tubular elements 6 are made. Advantageously, the axis in which the tubular element 6 extends is orthogonal to a plane in which the second face 4, hereinafter referred to as the first plane, is inscribed.

La section d'un élément tubulaire 6, prise dans un plan parallèle au premier plan de la deuxième paroi 4, représente un pourcentage compris entre 0,05 et 0,5% de la surface totale de la deuxième face 4. Un tel pourcentage permet d'implanter un grand nombre d'éléments tubulaires 6 sur la deuxième face, ce qui permet de garantir une augmentation de surface d'échange tout en limitant la longueur des éléments tubulaires. Ainsi, on maintient un encombrement convenable du compresseur, selon sa direction axiale. De préférence, le pourcentage est de 0,14%.The section of a tubular element 6, taken in a plane parallel to the first plane of the second wall 4, represents a percentage between 0.05 and 0.5% of the total surface of the second face 4. Such a percentage allows to implant a large number of tubular elements 6 on the second face, which ensures an increase of exchange surface while limiting the length of the tubular elements. Thus, a proper size of the compressor is maintained in its axial direction. Preferably, the percentage is 0.14%.

Selon un exemple de réalisation, un élément tubulaire 6 est formé par un tube plein de section circulaire et issu de matière avec la paroi. Bien entendu, l'invention couvre le cas où le tube est creux en son centre, ainsi que toute autre forme de section de ce tube, par exemple triangulaire, carrée, rectangulaire ou ovoïde.According to an exemplary embodiment, a tubular element 6 is formed by a solid tube of circular section and made of material with the wall. Of course, the invention covers the case where the tube is hollow in its center, as well as any other section of this tube, for example triangular, square, rectangular or ovoid.

La paroi 2, et plus particulièrement la deuxième face 4, s'étend dans le premier plan, celui-ci étant sensiblement perpendiculaire à un axe longitudinal du compresseur, passant par exemple par son arbre d'entraînement situé entre le moteur électrique et le mécanisme de compression. Le bord périphérique 3 est circulaire, mais il s'étend de manière perpendiculaire au premier plan. Il dépasse ainsi du premier plan, de part et d'autre de la paroi 2, ce qui permet de former une première cavité délimitée par la première face et une première portion 7 du bord périphérique 3, ainsi qu'une deuxième cavité délimitée par la deuxième face 4 et une deuxième portion 8 du bord périphérique 3.The wall 2, and more particularly the second face 4 extends in the first plane, the latter being substantially perpendicular to a longitudinal axis of the compressor, for example through its drive shaft located between the electric motor and the mechanism. compression. The peripheral edge 3 is circular, but it extends perpendicularly to the first plane. It thus exceeds the first plane, on both sides of the wall 2, which makes it possible to form a first cavity delimited by the first face and a first portion 7 of the peripheral edge 3, as well as a second cavity delimited by the second side 4 and a second portion 8 of the peripheral edge 3.

La pluralité d'éléments tubulaires 6 est, par exemple, intégralement contenue dans cette deuxième cavité. Les éléments tubulaires 6 sont répartis sur la deuxième face 4 de manière à former une multiplicité de rangées, par exemple orthogonales les unes par rapport aux autres.The plurality of tubular elements 6 is, for example, integrally contained in this second cavity. The tubular elements 6 are distributed on the second face 4 so as to form a plurality of rows, for example orthogonal to each other.

Un élément tubulaire 6 est notamment définit par sa longueur, ou extension la deuxième cavité. Cette longueur se mesure entre le premier plan dans lequel s'inscrit la deuxième face 4 et l'extrémité libre de l'élément tubulaire 6. De manière préférentielle, la longueur des éléments tubulaires 6 est inférieure à la longueur de la deuxième portion 8 du bord périphérique 3, mesurée entre le premier plan et une arête 9 terminant cette deuxième portion 8 selon une direction perpendiculaire au premier plan.A tubular element 6 is in particular defined by its length, or extension of the second cavity. This length is measured between the first plane in which the second face 4 and the free end of the tubular element 6 fit. Preferably, the length of the tubular elements 6 is less than the length of the second portion 8 of the peripheral edge 3, measured between the first plane and an edge 9 ending this second portion 8 in a direction perpendicular to the first plane.

Sur la paroi 2 est ménagé un palier 10 apte à recevoir un roulement. Un tel palier 10 est formé par une portion de tube circulaire issue de matière avec la paroi 2. Ce palier 10 est installé au centre du boîtier 1 et il est agencé pour loger un roulement qui maintient une extrémité de l'arbre d'entraînement reliant le moteur électrique au mécanisme de compression du compresseur électrique.On the wall 2 is provided a bearing 10 adapted to receive a bearing. Such a bearing 10 is formed by a portion of circular tube made of material with the wall 2. This bearing 10 is installed in the center of the housing 1 and is arranged to accommodate a bearing which maintains one end of the drive shaft connecting the electric motor to the compression mechanism of the electric compressor.

Une face externe 11 du palier 10 joint la deuxième face 4 par un congé périphérique 12. A l'opposé de ce congé, le palier 10 est terminé par une extrémité 13 qui s'inscrit dans un deuxième plan notamment distinct du premier plan. De manière avantageuse, l'intégralité du palier 10 est contenue dans la deuxième cavité. En d'autres termes, le deuxième plan est à une distance du premier plan inférieure à la distance qui sépare le premier plan de l'arête 9 bordant la deuxième portion 8 du bord périphérique 3. Cependant, le deuxième plan pourrait être à une distance du premier plan supérieure à la distance qui sépare le premier plan de l'arête 9 bordant la deuxième portion 8 du bord périphérique 3. La position du deuxième plan par rapport à la deuxième portion 8 du bord périphérique 3 est fonction de la configuration de l'arbre d'entraînement.An outer face 11 of the bearing 10 joins the second face 4 by a peripheral discharge 12. At the opposite of this leave, the bearing 10 is terminated by an end 13 which is part of a second plane notably distinct from the first plane. Advantageously, the entire bearing 10 is contained in the second cavity. In other words, the second plane is at a distance from the first plane less than the distance between the first plane of the edge 9 bordering the second portion 8 of the peripheral edge 3. However, the second plane could be at a distance the first plane greater than the distance between the first plane of the edge 9 bordering the second portion 8 of the peripheral edge 3. The position of the second plane relative to the second portion 8 of the peripheral edge 3 is a function of the configuration of the drive shaft.

Selon un exemple de réalisation, les éléments tubulaires 6 sont d'une longueur inférieure à la distance qui sépare l'extrémité 13 du palier 10 par rapport au premier plan dans lequel s'inscrit la deuxième face 4.According to an exemplary embodiment, the tubular elements 6 are of a length less than the distance separating the end 13 of the bearing 10 from the first plane in which the second face 4 is inscribed.

Les éléments tubulaires 6 sont répartis sur la deuxième face 4, autour du palier 10, préférentiellement autour du congé 12.The tubular elements 6 are distributed on the second face 4, around the bearing 10, preferably around the fillet 12.

Le boîtier 1 peut également comprendre des plots de vissage 14 qui, dans cet exemple de réalisation, se comptent au nombre de cinq. Ceux-ci sont en contact avec la deuxième portion 8 du bord périphérique 3 et sont répartis selon des secteurs angulaires identiques. Ces plots de vissage 14 s'étendent selon une direction perpendiculaire au premier plan dans lequel s'inscrit la deuxième face 4, et dépassent de l'arête 9, c'est-à-dire au-delà de la deuxième portion 8 du bord périphérique 3.The housing 1 may also comprise screwing studs 14 which, in this embodiment, are five in number. These are in contact with the second portion 8 of the peripheral edge 3 and are distributed according to identical angular sectors. These screwing studs 14 extend in a direction perpendicular to the first plane in which the second face 4 is part, and protrude from the edge 9, that is to say beyond the second portion 8 of the edge. device 3.

Au milieu du moyen de dissipation thermique 5, il est ménagé des plots de fixation 15 dont la fonction est de recevoir des moyens de fixation du dispositif de commande contre la première face. Ces plots de fixations 15 s'étendent dans la deuxième cavité, selon une direction perpendiculaire au premier plan. La longueur de ces plots de fixation 15 est supérieure à la longueur des éléments tubulaires 6, mais inférieure à la distance qui sépare l'arête 9 du premier plan dans lequel s'étend la deuxième face 4. Cependant, les plots de fixation 15 pourraient avoir toute autre configuration. En effet, la longueur des plots de fixation 15 dépend des moyens de fixation utilisés sur la première face et de l'épaisseur de la paroi 2.In the middle of the heat dissipation means 5, there are provided fixing studs 15 whose function is to receive fastening means of the control device against the first face. These fixing studs 15 extend in the second cavity, in a direction perpendicular to the first plane. The length of these fixing studs 15 is greater than the length of the tubular elements 6, but less than the distance separating the edge 9 from the first plane in which the second face 4 extends. However, the fixing studs 15 could have any other configuration. Indeed, the length of the fixing studs 15 depends on the fastening means used on the first face and the thickness of the wall 2.

Au travers de la paroi 2, il est ménagé un orifice 16, par exemple de section circulaire, qui traverse de part en part la paroi 2. Cet orifice 16 est agencé pour recevoir un connecteur électrique qui relie électriquement le dispositif de commande au moteur électrique du compresseur. Cet orifice 16 est bordé par une gorge 17 ménagée au niveau de la deuxième face 4, en vu de recevoir un dispositif d'étanchéité entre le connecteur électrique et la paroi 2. Deux trous traversant sont également ménagés immédiatement autour de l'orifice 16, de manière à pouvoir y installer une vis de fixation du connecteur électrique sur la paroi 2.Through the wall 2, there is provided an orifice 16, for example of circular section, which passes right through the wall 2. This orifice 16 is arranged to receive an electrical connector which electrically connects the control device to the electric motor. of the compressor. This orifice 16 is bordered by a groove 17 formed at the level of the second face 4, in view of receiving a sealing device between the electrical connector and the wall 2. Two through holes are also formed immediately around the orifice 16, so as to be able to install a screw for fixing the electrical connector on the wall 2.

Le boîtier 1 peut encore comprendre un flanc 18 ménagé à la périphérie externe de la paroi 2. Un tel flanc 18 prend naissance sur le bord périphérique 3 et s'étend radialement et vers l'extérieur du boîtier 1. La première cavité qui reçoit le dispositif de commande du moteur électrique peut avantageusement être bordée par ce flanc 18, une partie de ce dispositif de commande s'étendant dans une portion de la première cavité entourée par le flanc 18.The housing 1 may further comprise a flank 18 formed at the outer periphery of the wall 2. Such a flank 18 originates on the peripheral edge 3 and extends radially outwardly of the housing 1. The first cavity receiving the control device of the electric motor can advantageously be bordered by this sidewall 18, a part of this control device extending in a portion of the first cavity surrounded by the sidewall 18.

Pour alimenter électriquement le compresseur, le boîtier 1 peut comprendre un premier trou 19 qui traverse la paroi constitutive du flanc 18. Ce trou présente une section, par exemple, circulaire, et il est destiné à recevoir un connecteur électrique d'alimentation haute tension. Le flanc 18 peut encore être pourvu d'un deuxième trou 20 traversant, dont la section est notamment carré ou rectangulaire. Ce deuxième trou 20 est configuré pour recevoir un connecteur électrique de signal, spécialement dédié à la fourniture d'information de contrôle, de pilotage et/ou de diagnostic du compresseur.To electrically power the compressor, the housing 1 may include a first hole 19 which passes through the wall constituting the sidewall 18. This hole has a section, for example, circular, and is intended to receive a high-voltage power supply electrical connector. The flank 18 may also be provided with a second through hole 20, the section of which is in particular square or rectangular. This second hole 20 is configured to receive an electrical signal connector, especially dedicated to the provision of control information, control and / or diagnosis of the compressor.

Le matériau employé pour la fabrication du boîtier 1 détaillé ci-dessus, qui comprend la paroi 2 pourvue de sa pluralité d'éléments tubulaires 6, peut par exemple être un alliage d'aluminium ou de magnésium. La fabrication de ce boîtier est avantageusement réalisée au moins par une opération de fonderie.The material used for the manufacture of the housing 1 detailed above, which comprises the wall 2 provided with its plurality of tubular elements 6, may for example be an aluminum or magnesium alloy. The manufacture of this housing is advantageously carried out at least by a foundry operation.

La figure 2 illustre le boîtier 1 selon l'invention installé sur un compresseur à moteur électrique intégré 21. Ce compresseur comprend un premier boîtier 22 qui loge un mécanisme de compression, celui-ci pouvant avantageusement être du type à pistons, à palettes ou à spirales orbitantes. Entre le premier boîtier 22 et le boîtier 1 selon l'invention, on trouve un boîtier central 23 qui entoure un moteur électrique, le moteur électrique et le mécanisme de compression formant ainsi une unité du compresseur électrique 21. Une telle unité est ainsi installée à l'intérieur du premier boîtier 22 et du boîtier central 23.The figure 2 illustrates the housing 1 according to the invention installed on a compressor with integrated electric motor 21. This compressor comprises a first housing 22 which houses a compression mechanism, the latter may advantageously be of the type with pistons, vane or orbitant spirals. Between the first housing 22 and the housing 1 according to the invention, there is a central housing 23 which surrounds an electric motor, the electric motor and the compression mechanism thus forming a unit of the electric compressor 21. Such a unit is thus installed inside the first housing 22 and the central housing 23.

A une périphérie externe du premier boîtier 22, on trouve un dispositif de fixation 31 du compresseur électrique 21 sur le véhicule. Le boîtier central 23 comprend également deux dispositifs de fixation 31 ménagés sur une face externe de ce boîtier central 23.At an outer periphery of the first housing 22, there is a fastening device 31 of the electric compressor 21 on the vehicle. The central housing 23 also comprises two fixing devices 31 formed on an outer face of this central housing 23.

A l'extrémité opposée au premier boîtier 22 par rapport au boîtier central 23, le boîtier 1 selon l'invention est rendu solidaire d'une extrémité 30 du boîtier central 23. La première cavité délimitée par la première portion 7 du bord périphérique 3 et par le flanc 18 est fermée par un couvercle 24 rendu solidaire du boîtier 1 par une multiplicité de moyen de solidarisation. Le premier boîtier 22, le boîtier central 23 et le boîtier 1 sont ainsi alignés sur une direction longitudinale 27 du compresseur électrique 21.At the opposite end to the first housing 22 relative to the central housing 23, the housing 1 according to the invention is secured to one end 30 of the central housing 23. The first cavity defined by the first portion 7 of the peripheral edge 3 and by the sidewall 18 is closed by a cover 24 secured to the housing 1 by a multiplicity of securing means. The first housing 22, the central housing 23 and the housing 1 are thus aligned in a longitudinal direction 27 of the electric compressor 21.

Le compresseur électrique 21 comprend le connecteur d'alimentation électrique haute tension, ici référencé 25, installé dans le premier trou traversant le flanc 18 du boîtier 1. Bien qu'invisible sur cette figure, il en va de même pour le connecteur électrique de signal installé dans le deuxième trou traversant ledit flanc.The electric compressor 21 comprises the high voltage electrical supply connector, here referenced 25, installed in the first hole through the sidewall 18 of the housing 1. Although invisible in this figure, the same applies to the electrical signal connector installed in the second hole through said flank.

Le premier boîtier 22 comprend également un orifice de sortie 28 par lequel le fluide réfrigérant sort du compresseur électrique 21, après avoir été comprimé par le mécanisme de compression.The first housing 22 also includes an outlet port 28 through which the coolant exits the electric compressor 21, after being compressed by the compression mechanism.

Un orifice d'entrée 29 du fluide réfrigérant est ménagé sur le boîtier central 23, de manière adjacente, éventuellement immédiatement adjacente, à l'extrémité 30 du boîtier centrale. Cet orifice d'entrée 29 s'étend selon une direction perpendiculaire à la direction longitudinale 27 du compresseur électrique 21. Un tel positionnement de l'orifice d'entrée 29 garantit que les éléments tubulaires formant le moyen de dissipation thermique seront léchés à leurs extrémités et le long de leurs périphéries par le fluide réfrigérant qui entre dans le compresseur électrique 21.An inlet 29 of the refrigerant fluid is provided on the central housing 23, adjacent, possibly immediately adjacent, to the end 30 of the central housing. This inlet orifice 29 extends in a direction perpendicular to the longitudinal direction 27 of the electric compressor 21. Such a positioning of the inlet orifice 29 ensures that the tubular elements forming the heat dissipation means will be licked at their ends. and the along their peripheries by the refrigerant which enters the electric compressor 21.

Claims (14)

Boîtier (1) d'un compresseur (21) électrique pour circuit de fluide réfrigérant, comprenant une paroi (2) apte à délimiter un premier volume du compresseur dans lequel le fluide réfrigérant circule par rapport à un deuxième volume du compresseur dans lequel s'étend un dispositif de commande du moteur électrique, une première face de la paroi (2) tournée vers le deuxième volume étant configurée pour recevoir le dispositif de commande alors qu'une deuxième face (4) de la paroi (2) tournée vers le premier volume comprend un moyen de dissipation thermique (5), caractérisé par le fait que le moyen de dissipation thermique (5) prend la forme d'une pluralité d'éléments tubulaires (6) issus de la deuxième face (4).Housing (1) of an electric compressor (21) for a refrigerant circuit, comprising a wall (2) capable of delimiting a first volume of the compressor in which the refrigerant circulates relative to a second volume of the compressor in which extends a control device of the electric motor, a first face of the wall (2) facing the second volume being configured to receive the control device while a second face (4) of the wall (2) facing the first volume comprises a heat dissipation means (5), characterized in that the heat dissipation means (5) takes the form of a plurality of tubular elements (6) issuing from the second face (4). Boîtier selon la revendication 1, dans lequel au moins un élément tubulaire (6) est formé par un tube plein de section circulaire issu de matière avec la paroi (2).Housing according to claim 1, wherein at least one tubular element (6) is formed by a solid tube of circular section made of material with the wall (2). Boîtier selon l'une des revendications 1 ou 2, dans lequel au moins un élément tubulaire (6) s'étend le long d'un axe perpendiculaire à un premier plan dans lequel s'inscrit la deuxième face (4).Housing according to one of claims 1 or 2, wherein at least one tubular element (6) extends along an axis perpendicular to a first plane in which is inscribed the second face (4). Boîtier selon la revendication 3, comprenant un bord périphérique (3) formé par une première portion (8) qui débouche de la deuxième face (4) de la paroi et une deuxième portion (7) qui débouche de la première face de la paroi, une longueur des éléments tubulaires (6) mesurée selon l'axe perpendiculaire étant inférieure à une longueur de la première portion (8), mesurée selon ce même axe.Housing according to claim 3, comprising a peripheral edge (3) formed by a first portion (8) which opens out from the second face (4) of the wall and a second portion (7) which opens out from the first face of the wall, a length of the tubular elements (6) measured along the perpendicular axis being less than a length of the first portion (8) measured along the same axis. Boîtier selon la revendication 4, dans lequel un palier (10) apte à recevoir un roulement, débouche de la deuxième face (4) de la paroi.Housing according to claim 4, wherein a bearing (10) adapted to receive a bearing opens out of the second face (4) of the wall. Boîtier selon la revendication 5, dans lequel le palier (10) est terminé par une extrémité (13) qui s'inscrit dans un deuxième plan séparé du premier plan dans lequel s'inscrit la deuxième face (4) d'une distance inférieure à la longueur de la première portion (8) du bord périphérique (3).Housing according to claim 5, wherein the bearing (10) is terminated by an end (13) which is part of a second plane separated from the first plane in which the second face (4) is inscribed by a distance less than the length of the first portion (8) of the peripheral edge (3). Boîtier selon la revendication 6, dans lequel la longueur d'au moins un élément tubulaire (6) est inférieure à la distance qui sépare le deuxième plan du premier plan.The housing of claim 6, wherein the length of at least one tubular member (6) is less than the distance between the second plane and the first plane. Boîtier selon l'une quelconque des revendications 4 à 7, dans lequel la pluralité d'éléments tubulaires (6) est répartie sur la deuxième face (4) autour du palier (10).Housing according to any one of claims 4 to 7, wherein the plurality of tubular elements (6) is distributed on the second face (4) around the bearing (10). Boîtier selon l'une quelconque des revendications 2 à 5, dans lequel la paroi (2) comprend un orifice (16) traversant apte à recevoir un connecteur électrique reliant le dispositif de commande au moteur électrique.Housing according to any one of claims 2 to 5, wherein the wall (2) comprises a through orifice (16) adapted to receive an electrical connector connecting the control device to the electric motor. Boîtier selon l'une quelconques des revendications précédentes, comprenant un flanc (18) ménagé à la périphérie de la paroi (2).Housing according to any one of the preceding claims, comprising a sidewall (18) formed at the periphery of the wall (2). Boîtier selon la revendication 10, dans lequel le flanc (18) comprend un premier trou (19) traversant agencé pour recevoir un connecteur électrique d'alimentation haute tension et un deuxième trou (20) traversant agencé pour recevoir un connecteur électrique de signal.The housing of claim 10, wherein the sidewall (18) includes a first through hole (19) arranged to receive a high voltage power supply connector and a second through hole (20) arranged to receive an electrical signal connector. Compresseur (21) pour circuit de fluide réfrigérant comprenant une unité formée par un mécanisme de compression accouplé à un moteur électrique, ledit compresseur comprenant un boîtier (1) selon l'une quelconque des revendications précédentes.A refrigerant circuit compressor (21) comprising a unit formed by a compression mechanism coupled to an electric motor, said compressor comprising a housing (1) according to any one of the preceding claims. Compresseur selon la revendication 12, comprenant un connecteur d'alimentation électrique haute tension (25) installé dans un premier trou (19) traversant un flanc (18) du boîtier (1), et un connecteur électrique de signal installé dans un deuxième trou (20) traversant ledit flanc (18).The compressor of claim 12, comprising a high voltage power supply connector (25) installed in a first hole (19) passing through a sidewall (18) of the housing (1), and an electrical signal connector installed in a second hole (20) passing through said sidewall (18). Compresseur selon l'une quelconque des revendications 12 ou 13, comprenant un orifice d'entrée (29) du fluide réfrigérant agencé sur le compresseur (21) de manière à ce que le fluide réfrigérant circule entre les éléments tubulaires (6).Compressor according to any one of claims 12 or 13, comprising an inlet (29) of the refrigerant fluid arranged on the compressor (21) so that the refrigerant circulates between the tubular elements (6).
EP13168501.8A 2012-05-22 2013-05-21 Electric compressor housing including a dissipating device, and compressor comprising such a housing Withdrawn EP2667030A1 (en)

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FR1254635A FR2991009B1 (en) 2012-05-22 2012-05-22 ELECTRIC COMPRESSOR HOUSING COMPRISING A DISSIPATION DEVICE, AND COMPRESSOR COMPRISING SUCH A HOUSING

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EP (1) EP2667030A1 (en)
JP (1) JP2014001724A (en)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105332920A (en) * 2014-07-07 2016-02-17 珠海格力节能环保制冷技术研究中心有限公司 Partition plate assembly for three-cylinder double-stage compressor and three-cylinder double-stage compressor
FR3070730A1 (en) * 2017-09-06 2019-03-08 Valeo Japan Co., Ltd. ELECTRIC COMPRESSOR FOR MOTOR VEHICLE

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3158199A4 (en) * 2014-06-17 2018-02-28 Hayward Industries, Inc. Water-cooled electronic inverter
CN105422421A (en) * 2015-12-21 2016-03-23 常熟市制冷压缩机铸件厂 Lightweight housing of compressor of refrigerator
FR3064840B1 (en) 2017-04-03 2019-12-27 Mmt ag THERMOREGULATED HIGH POWER ELECTRIC MACHINE
FR3068541B1 (en) * 2017-06-28 2019-07-19 Valeo Equipements Electriques Moteur PARTS ASSEMBLY AND METHOD FOR MANUFACTURING SUCH ASSEMBLY
JP7063413B2 (en) * 2019-03-18 2022-05-09 株式会社村田製作所 Pumping unit
KR20230086010A (en) * 2021-12-07 2023-06-15 한온시스템 주식회사 Electric compressor
DE102022211209A1 (en) * 2022-10-21 2024-05-02 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg Refrigerant assembly for a motor vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020039532A1 (en) * 2000-09-29 2002-04-04 Satoru Saito Motor-driven compressors
DE102005047085A1 (en) * 2005-09-30 2007-04-05 Robert Bosch Gmbh Damping element for compressor e.g. vehicle air conditioning system, has flat side which has surface-enlarging structure whereby in the installed condition flat side is accessible from outside
EP1947335A2 (en) * 2007-01-17 2008-07-23 Officine Mario Dorin S.p.A Reciprocating compressor, in particular of the semi-hermetic type

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH104165A (en) * 1996-06-14 1998-01-06 Toyo Radiator Co Ltd Air cooling heat sink
US5727624A (en) * 1997-03-18 1998-03-17 Liken Lin CPU heat dissipating device with airguiding units
US6225695B1 (en) * 1997-06-05 2001-05-01 Lsi Logic Corporation Grooved semiconductor die for flip-chip heat sink attachment
US6244331B1 (en) * 1999-10-22 2001-06-12 Intel Corporation Heatsink with integrated blower for improved heat transfer
DE60322232D1 (en) * 2002-09-13 2008-08-28 Aisin Aw Co driving device
JP2004183631A (en) * 2002-12-06 2004-07-02 Matsushita Electric Ind Co Ltd Electric compressor
JP2005054716A (en) * 2003-08-06 2005-03-03 Matsushita Electric Ind Co Ltd Electric compressor
JP3744522B2 (en) * 2004-03-11 2006-02-15 松下電器産業株式会社 Electric compressor
JP5209259B2 (en) * 2007-09-25 2013-06-12 サンデン株式会社 Drive circuit integrated electric compressor
CN201127157Y (en) * 2007-12-20 2008-10-01 黄崇贤 Pole-shaped radiator with radiation fin
JP5195612B2 (en) * 2008-09-29 2013-05-08 パナソニック株式会社 Inverter unit integrated electric compressor
JP2012057504A (en) * 2010-09-07 2012-03-22 Panasonic Corp Electric compressor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020039532A1 (en) * 2000-09-29 2002-04-04 Satoru Saito Motor-driven compressors
FR2814783A1 (en) 2000-09-29 2002-04-05 Sanden Corp COMPRESSOR DRIVEN BY A MOTOR
DE102005047085A1 (en) * 2005-09-30 2007-04-05 Robert Bosch Gmbh Damping element for compressor e.g. vehicle air conditioning system, has flat side which has surface-enlarging structure whereby in the installed condition flat side is accessible from outside
EP1947335A2 (en) * 2007-01-17 2008-07-23 Officine Mario Dorin S.p.A Reciprocating compressor, in particular of the semi-hermetic type

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105332920A (en) * 2014-07-07 2016-02-17 珠海格力节能环保制冷技术研究中心有限公司 Partition plate assembly for three-cylinder double-stage compressor and three-cylinder double-stage compressor
FR3070730A1 (en) * 2017-09-06 2019-03-08 Valeo Japan Co., Ltd. ELECTRIC COMPRESSOR FOR MOTOR VEHICLE
EP3453878A1 (en) * 2017-09-06 2019-03-13 Valeo Japan Co., Ltd. Electric compressor for a motor vehicle

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FR2991009A1 (en) 2013-11-29
FR2991009B1 (en) 2014-05-16
CN103423131A (en) 2013-12-04
JP2014001724A (en) 2014-01-09

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