WO2016005890A1 - Electric compressor plate and electric compressor comprising such a plate - Google Patents
Electric compressor plate and electric compressor comprising such a plate Download PDFInfo
- Publication number
- WO2016005890A1 WO2016005890A1 PCT/IB2015/055116 IB2015055116W WO2016005890A1 WO 2016005890 A1 WO2016005890 A1 WO 2016005890A1 IB 2015055116 W IB2015055116 W IB 2015055116W WO 2016005890 A1 WO2016005890 A1 WO 2016005890A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plate
- electric
- wall
- electric motor
- housing
- Prior art date
Links
Classifications
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- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
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- 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
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- 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
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
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- 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
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- 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
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- 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
- F04C18/0215—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 where only one member is moving
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- 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
- F04C2240/808—Electronic circuits (e.g. inverters) installed inside the machine
Definitions
- Plate of an electric compressor and electric compressor comprising such a plate
- the invention relates to a plate of an electric refrigerant compressor and said electric compressor comprising the plate. It will find in particular its applications in a refrigerant circuit fitted to a motor vehicle.
- the refrigerant fluid is conventionally circulated inside an air conditioning circuit via a compressor.
- this compressor is mechanical type because its rotation is driven by means of a pulley connected to the internal combustion engine by a belt.
- hybrid vehicles that is to say with an internal combustion engine coupled to an electric motor, or all electric, that is to say exclusively powered by an electric motor, is constantly increasing by the fact of rarefaction of fossil fuels that fuel vehicles equipped with internal combustion engines.
- the mechanical energy usually supplied by the internal combustion engine is therefore less available or completely unavailable for the case of all-electric vehicles.
- the preferred solution for driving a compressor in a hybrid vehicle or electric is by feeding an electric motor driving the compressor rather than a belt output of the electric machine.
- Such electric compressors comprise a compression mechanism driven by the electric motor, and a control device of the electric motor.
- the control device is located in a separate compartment of the electric motor by at least one partition wall on which is mounted the control device.
- the engine is located in another compartment.
- control device Due to the electrical components of the control device, the latter can generate a large amount of heat in operation. It is then necessary to cool it.
- the invention aims to improve the situation and thus concerns a plate of an electric refrigerant compressor, intended to separate an electric motor from the electric compressor of an electric control device of said electric motor, said plate comprising a bottom wall and means for receiving an engine transmission shaft originating from said bottom wall of the plate, characterized in that said plate defines a circulation channel of said refrigerant fluid for guiding the refrigerant on less than one turn around the receiving means and in one direction.
- the plate and in particular its circulation channel is arranged to guide the refrigerant fluid so as to ensure good cooling of the plate while limiting the fluid pressure losses.
- the plate defines a refrigerant circulation channel for guiding the refrigerant over less than one turn around the receiving means and in a single direction to a zone to be cooled.
- the plate comprises bosses extending transversely to the bottom wall and intended to receive means for fixing the plate to a box configured to receive said electric motor, said bosses being interconnected by a wall defining an edge; said circulation channel;
- the bosses extend perpendicularly to the bottom wall
- said wall remains concave between said bosses
- said wall is in an arc of a circle between said bosses;
- the plate comprises three bosses interconnected by said wall;
- said wall is formed in continuity of material from the remainder of said plate
- said plate comprises a partition intended to guide the fluid towards said channel when it comes into contact with the plate;
- said partition is formed in continuity of material from the remainder of said plate;
- the depth of the channel increases according to the direction of flow of the fluid in the channel
- said partition limits the passage of the refrigerant by forcing it to pass through the inlet of said channel
- the invention also relates to an electric compressor comprising a plate as defined above.
- the housing comprises an opening through which the fluid enters the housing at an inlet manifold.
- FIG. 1 is a view of a compressor comprising a plate according to the invention, illustrated according to a diametral cutting plane.
- FIG. 1 is an elevational view of the plate of Figure 1.
- FIG. 1 illustrates an electric compressor 9 comprising a plate 4 according to the invention.
- the compressor 9 is an electric compressor in that it incorporates an electric motor 2 which drives a compression mechanism 3.
- the electric motor 2 comprises an integrally circular periphery stator 2A and a rotor 2B integral with a transmission shaft 21 of the motor extending longitudinally along an axis H as shown in FIG. which turns to drive the compressor.
- the plate 4 comprises a receiving means 13 of the transmission shaft 21 of the engine originating from a bottom wall 5 of the plate 4.
- Said receiving means 13 here comprises a bearing-shaped housing which can accommodate a roller bearing. balls or equivalent.
- the compression mechanism 3 comprises fixed parts and moving parts, the latter being set in rotation by the shaft 21 of the electric motor 2.
- the compression mechanism 3 is of the spiral compression type (Scroll in English) or of the type vane or piston type, these examples being given for illustrative purposes without limiting the scope of the invention.
- the compressor 9 further comprises a control device 1 of the electric motor 2.
- This control device 1 is notably an inverter (inverter in English) transforming a direct current coming from an on-board network of the vehicle into a sinusoidal current supplying the power supply. electric motor 2.
- the compressor 9 is delimited vis-à-vis its external environment by at least one housing 7 defining a cavity 17 accommodating said electric motor 2.
- This housing 7 is, for example, a piece of aluminum or aluminum alloy, of hollow circular shape comprising a peripheral envelope which delimits an internal volume.
- This housing 7 comprises at least one engine compartment 20 corresponding to said cavity 17 and in which is mounted the electric motor.
- the housing 7 also comprises at least one control compartment 10 in which the control device 1 is mounted. These compartments are separate volumes separated from each other by said plate 4.
- the plate 4 thus separates the control device 1 from said cavity 17 and the electric motor 2 and receives the control device 1. It forms with the housing 7, the engine compartment 20.
- the plate 4 may be part of the housing 7, or be assembled to the latter, for example at the time of mounting the control device 1 on the housing 7.
- the plate here comprises a peripheral wall 6, transverse to the bottom wall 5 so that the plate 4 defines an end housing which can be described as sub-housing here forming the control compartment 10.
- the housing can be rendered external airtight via a closure lid, the sub-housing and the lid cooperating with each other via a suitable sealing means arranged between these two elements.
- the housing 7 of the engine compartment 20 comprises an opening 8 allowing a refrigerant to enter the housing 7.
- the opening 8 is here located right of the electric motor 2, that is to say that it is located at planes perpendicular to the shaft of the electric motor 2 passing through said motor shaft.
- the compression mechanism 3, located on the left of the figure, is located at a first longitudinal side 1 1 of the engine compartment 20.
- the control device 1, located on the right of FIG. 1, is located at a second longitudinal side 12 of the electric motor 2, opposite the first longitudinal side 1 1 with respect to the electric motor 2. It is understood here that the control compartment 10 is located at the second side 12 of the engine compartment 20.
- the housing 7 the sub-housing forming the control compartment 10 in which is housed the control device 1 at the second side 12 of the engine compartment 20, and a sub-housing forming a compression compartment 30 in which is housed the compression mechanism 3 at the first side 1 1 of the electric motor.
- the engine compartment 20 is interposed between the control compartment 10 and the compression compartment 30.
- these compartments may be delimited by a single peripheral part which forms a single housing, provided with a partition, or, for example, by separate sub-housings dedicated to each compartment and assembled to each other.
- the plate 4 can thus be part of the housing 7, the sub-housing forming the control compartment 10 or be connected between the housing 7 and the sub-housing forming the control compartment 10.
- the refrigerant or mixture consisting of a coolant mixed with a lubricant, enters the engine compartment 20 through the opening 8.
- the refrigerant fluid is a subcritical fluid such as for example the R134a but it can also be a supercritical refrigerant such as for example carbon dioxide known as R744.
- the lubricant is for example a polyalkylene glycol type compound.
- the fluid flows in the engine compartment 20 and in the compression compartment 30 in which is housed the compression mechanism 3.
- the latter ensures the desired increase in pressure and temperature of the refrigerant.
- the circulation of the coolant in contact with the engine allows the cooling of the latter.
- the engine compartment 20 is separated from the control compartment 10 by the plate 4 which prevents the penetration of the fluid into the control compartment 10. It is thus clear that the fluid present in the engine compartment 20 does not circulate in the compartment control device 10 for protecting the control device 1 which comprises elements having high electrical potentials.
- the control device 1 supplies the electrical energy to the electric motor 2. Since these components are in two separate compartments, it is necessary to electrically connect the control device 1 to the electric motor 2 by an electrical connection device mounted at the interface between the engine compartment 20 and the control compartment 10, for example through the bottom wall 5 of the plate 4.
- the electrical components of the control device 1 release a large amount of heat and it is therefore necessary to cool them, in particular by cooling the bottom wall 5 of the plate 4.
- said plate 4 defines a channel 40 for circulation of the refrigerant fluid for guiding the refrigerant in a plane parallel to said bottom wall 5 of the plate 4, on less than one turn around the receiving means 13 and in the same direction D.
- the fluid is thus guided to a zone predetermined 47 of the bottom wall 5 against which are arranged power elements of the control device that require increased cooling. It is understood that the fluid comes into contact with the bottom wall 5 of the plate 4 at the arrow referenced 35 in Figure 2 and is guided around the receiving means 13, on less than one turn and in the one-way D.
- the channel 40 thus allows the fluid to circulate on almost the entire plate 4 so as to cool, by rotating around the receiving means 13, without causing significant pressure losses since the entire fluid will go to through the engine compartment and to the compression compartment before having made a complete revolution around the receiving means 13.
- the fluid enters the casing 7 through the opening 8 is guided to rotate around the receiving means 13 by the channel 40 and passes through the engine to reach the compressor it passes through in turn.
- Channel 40 is designed in such a way that its depth evolves between a lower depth located at an upstream zone with respect to the direction of flow of the fluid and an increased depth at a downstream zone located near said predetermined zone 47 requiring specific cooling.
- the movement of the refrigerant fluid tends towards a direction of the coolant opposite the engine and the compression device.
- the plate 4 here comprises a proximal collector 50 and a distal collector 52 of the fluid between which the channel 40 extends. At said collectors 50, 52, the fluid passage section is wider and the guiding effect is reduced compared to that offered by the channel 40.
- the plate 4 comprises for example a partition 46 guiding the fluid at the outlet of the opening 8 in the direction of the direction D.
- the partition 46 at least partially defines the proximal collector 52.
- the partition 46 also blocks the fluid when has rotated around the receiving means so that it performs less than one revolution around the receiving means 13.
- the partition 46 limits the passage of the refrigerant through the area of the electrical terminal and the engine power connector, forcing it to pass through the entrance of the channel 40.
- the partition 46 may also form a cavity penetrating into the engine compartment 20.
- the cavity 46 is then intended primarily to receive components, such as capacity, which allows them to have optimal cooling.
- the plate 4 comprises bosses 41, here three in number, extending transversely to the bottom wall 5, in particular perpendicular, and intended to receive fastening means 42 of the plate on the housing 7.
- the bosses 41 are for example located along the peripheral wall 6. They extend inwardly of the compressor 9, that is to say towards the inside of the housing 7.
- the bosses 41 are interconnected by a wall 45 defining an edge of said circulation channel 40.
- the wall 45 remains concave between said bosses 41. It is also here in an arc between said bosses 41. For example, it is substantially parallel to the peripheral wall 6.
- the channel 40 thus makes it possible to avoid fluid foldback zones, which would create zones of turbulence opposing the direction of flow D of the fluid. Such a channel 40 thus allows a substantial reduction in the pressure drop.
- the opposite edge of the channel 40 is here defined by the landing of the receiving means 13.
- the channel 40 reduces the pressure losses relatively relatively by allowing a large portion of refrigerant to circulate with a relatively small number, or even zero, of obstacles up to said predetermined zone. As a result, it reduces the portion of refrigerant that is directly sucked by the compression mechanism.
- the refrigerant which enters the channel 40 through the opening 8 is guided by the partition 46 to the channel 40 and then by the wall 45 around the receiving means 13 in the direction of the arrow referenced D, which is identical to the direction of rotation of the rotor of the electric motor, on less of a turn.
- the refrigerating fluid arriving in the channel 40 is in fact sucked by the compression mechanism and, taking into account the conformation of the channel 40, guided along the bottom wall 5 of the plate 4.
- the bosses 41, the partition 46 and / or the wall 45 are for example formed from the peripheral wall 6 and / or the bottom wall 5 of the plate 4, that is to say, in continuity of material the rest of the plate 4 which can be obtained by forging or molding.
- the channel 40 further allows a maximum of fluid to pass through the engine and not outside thereof, that is to say outside the stator.
- the engine cooling is thus improved. It is in particular thanks to the extra thickness of material created by the bosses 41 and the wall 45 that the channel 40 guides the fluid in priority towards the center of the motor and not towards its periphery.
- the plate of the invention thus provides a solution to the optimization of cooling without degrading the overall efficiency of the compressor
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
Plate (4) of an electric compressor for refrigerant fluid, which plate is intended to separate an electric motor of the electric compressor from an electric control device of said electric motor, said plate (4) comprising an end wall (5) and a means (13) for receiving a transmission shaft of the motor starting from said end wall (5) of the plate (4), said plate (4) defining a passage (40) for the circulation of said refrigerant fluid and intended to guide the refrigerant fluid over at least one turn around the receiving means (13) and in a single sense (D).
Description
Plaque d'un compresseur électrique et compresseur électrique comprenant une telle plaque Plate of an electric compressor and electric compressor comprising such a plate
L'invention concerne une plaque d'un compresseur électrique de fluide réfrigérant et ledit compresseur électrique comprenant la plaque. Elle trouvera en particulier ses applications dans un circuit de fluide réfrigérant équipant un véhicule automobile. The invention relates to a plate of an electric refrigerant compressor and said electric compressor comprising the plate. It will find in particular its applications in a refrigerant circuit fitted to a motor vehicle.
Le 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 entraînée au moyen d'une poulie reliée au moteur à combustion interne par une courroie. The 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 driven 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 faite de la raréfaction des énergies fossiles qui alimentent les véhicules équipés de moteur à combustion interne. The number of hybrid vehicles, that is to say with an internal combustion engine coupled to an electric motor, or all electric, that is to say exclusively powered by an electric motor, is constantly increasing by the fact of rarefaction of fossil fuels that fuel vehicles equipped with internal combustion engines.
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. Par ailleurs, pour des raisons de rendement global, la solution préférée pour entraîner un compresseur dans un véhicule hybride ou
électrique est par alimentation d'un moteur électrique d'entraînement du compresseur plutôt que par une courroie en sortie de la machine 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. Moreover, for reasons of overall efficiency, the preferred solution for driving a compressor in a hybrid vehicle or electric is by feeding an electric motor driving the compressor rather than a belt output of the electric machine.
De tels compresseurs électriques comprennent un mécanisme de compression entraîné par le moteur électrique, et un dispositif de commande du moteur électrique. Le dispositif de commande est situé dans un compartiment séparé du moteur électrique par au moins une paroi de séparation sur laquelle est monté le dispositif de commande. Le moteur est donc situé dans un autre compartiment. Such electric compressors comprise a compression mechanism driven by the electric motor, and a control device of the electric motor. The control device is located in a separate compartment of the electric motor by at least one partition wall on which is mounted the control device. The engine is located in another compartment.
Du fait des éléments électriques composant le dispositif de commande, ce dernier peut générer une quantité importante de chaleur en fonctionnement. Il est alors nécessaire de le refroidir. Due to the electrical components of the control device, the latter can generate a large amount of heat in operation. It is then necessary to cool it.
Il est connu pour cela d'utiliser le fluide réfrigérant circulant dans le compartiment du moteur pour refroidir ce dernier. Une solution existante consiste à positionner l'entrée du fluide réfrigérant dans le compartiment du moteur électrique entre la paroi de séparation et le moteur électrique de sorte qu'en entrant dans le compartiment du moteur électrique, le fluide réfrigérant circule à proximité de l'élément de support avant d'être aspiré vers le mécanisme de compression. Or, cette solution implique qu'une trop faible quantité de fluide réfrigérant circule au contact de la plaque de sorte que le refroidissement de la plaque est peu satisfaisant.
Il est connu pour améliorer ce refroidissement, de disposer des ailettes de refroidissement sur la plaque de séparation. Cependant, cela complique la fabrication d'une telle plaque et présente également l'inconvénient d'augmenter significativement la perte de charge du fluide, ce qui détériore le rendement thermique du refroidissement. It is known for this to use the coolant circulating in the engine compartment to cool the latter. An existing solution is to position the refrigerant inlet in the compartment of the electric motor between the partition wall and the electric motor so that entering the compartment of the electric motor, the refrigerant circulates near the element of support before being sucked to the compression mechanism. However, this solution implies that a too small amount of coolant circulates in contact with the plate so that the cooling of the plate is unsatisfactory. It is known to improve this cooling, to have the cooling fins on the separation plate. However, this complicates the manufacture of such a plate and also has the disadvantage of significantly increasing the pressure loss of the fluid, which deteriorates the thermal efficiency of the cooling.
L'invention vise à améliorer la situation et concerne ainsi une plaque d'un compresseur électrique de fluide réfrigérant, destinée à séparer un moteur électrique du compresseur électrique d'un dispositif de commande électrique dudit moteur électrique, ladite plaque comprenant une paroi de fond et un moyen de réception d'un arbre de transmission du moteur prenant naissance depuis ladite paroi de fond de la plaque, caractérisé par le fait que ladite plaque définit un canal de circulation dudit fluide réfrigérant destiné à guider le fluide réfrigérant sur moins d'un tour autour du moyen de réception et selon un unique sens. The invention aims to improve the situation and thus concerns a plate of an electric refrigerant compressor, intended to separate an electric motor from the electric compressor of an electric control device of said electric motor, said plate comprising a bottom wall and means for receiving an engine transmission shaft originating from said bottom wall of the plate, characterized in that said plate defines a circulation channel of said refrigerant fluid for guiding the refrigerant on less than one turn around the receiving means and in one direction.
Ainsi, grâce à l'invention, la plaque et en particulier son canal de circulation est agencé pour guider le fluide réfrigérant de manière à assurer un bon refroidissement de la plaque tout en limitant les pertes de charges du fluide. Thus, thanks to the invention, the plate and in particular its circulation channel is arranged to guide the refrigerant fluid so as to ensure good cooling of the plate while limiting the fluid pressure losses.
Dans un mode de réalisation de l'invention, la plaque définit un canal de circulation du fluide réfrigérant destiné à guider le fluide réfrigérant sur moins d'un tour autour du moyen de réception et selon un unique sens en destination d'une zone à refroidir.
Selon différents modes de réalisation de l'invention, qui pourront être pris ensemble ou séparément : In one embodiment of the invention, the plate defines a refrigerant circulation channel for guiding the refrigerant over less than one turn around the receiving means and in a single direction to a zone to be cooled. . According to various embodiments of the invention, which may be taken together or separately:
- la plaque comprend des bossages s'étendant de manière transversale à la paroi de fond et destinés à recevoir des moyens de fixation de la plaque à un boitier configuré pour recevoir ledit moteur électrique, lesdits bossages étant reliés entre eux par une paroi définissant un bord dudit canal de circulation ; the plate comprises bosses extending transversely to the bottom wall and intended to receive means for fixing the plate to a box configured to receive said electric motor, said bosses being interconnected by a wall defining an edge; said circulation channel;
- les bossages s'étendent de manière perpendiculaire à la paroi de fond ; the bosses extend perpendicularly to the bottom wall;
- ladite paroi reste concave entre lesdits bossages ; said wall remains concave between said bosses;
- ladite paroi est en arc de cercle entre lesdits bossages ; said wall is in an arc of a circle between said bosses;
- la plaque comprend trois bossages reliés entre eux par ladite paroi ; the plate comprises three bosses interconnected by said wall;
- ladite paroi est formée en continuité de matière du reste de ladite plaque ; said wall is formed in continuity of material from the remainder of said plate;
- ladite plaque comprend une cloison destinée à guider le fluide vers ledit canal à son entrée en contact avec la plaque ; said plate comprises a partition intended to guide the fluid towards said channel when it comes into contact with the plate;
- ladite cloison est formée en continuité de matière du reste de ladite plaque ; said partition is formed in continuity of material from the remainder of said plate;
- la profondeur du canal augmente selon le sens d'écoulement du fluide dans le canal ; the depth of the channel increases according to the direction of flow of the fluid in the channel;
- ladite cloison limite le passage du réfrigérant en le contraignant à passer par l'entrée dudit canal ; said partition limits the passage of the refrigerant by forcing it to pass through the inlet of said channel;
- ladite cloison forme une cavité pénétrant dans un compartiment moteur ;
L'invention concerne aussi un compresseur électrique comprenant une plaque telle que définie précédemment. said partition forms a cavity penetrating into an engine compartment; The invention also relates to an electric compressor comprising a plate as defined above.
Avantageusement, le boîtier comprend une ouverture par laquelle le fluide entre dans le boîtier au niveau d'un collecteur d'entrée. Advantageously, the housing comprises an opening through which the fluid enters the housing at an inlet manifold.
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 les dessins dans lesquels : Other features, details and advantages of the invention will emerge more clearly on reading the description given below as an indication in relation to the drawings in which:
- la figure 1 est une vue d'un compresseur comprenant une plaque selon l'invention, illustré selon un plan de coupe diamétral. - Figure 1 is a view of a compressor comprising a plate according to the invention, illustrated according to a diametral cutting plane.
- la figure 2 est une vue en élévation de la plaque de la figure 1 . - Figure 2 is an elevational view of the plate of Figure 1.
Il faut noter que les figures exposent l'invention de manière détaillée, lesdites figures peuvent bien entendu servir à mieux définir l'invention le cas échéant. It should be noted that the figures show the invention in detail, said figures can of course be used to better define the invention where appropriate.
La figure 1 illustre un compresseur électrique 9 comprenant une plaque 4 selon l'invention. Le compresseur 9 est un compresseur électrique en ce sens qu'il intègre un moteur électrique 2 qui entraîne un mécanisme de compression 3. Le moteur électrique 2 comprend un stator 2A de périphérie intégralement circulaire et un rotor 2B solidaire d'un arbre de transmission 21 du moteur qui s'étend longitudinalement selon un axe H comme représenté sur la figure 1 et
qui tourne pour entraîner le compresseur. La plaque 4 comprend un moyen de réception 13 de l'arbre de transmission 21 du moteur prenant naissance depuis une paroi de fond 5 de la plaque 4. Ledit moyen de réception 13 comprend ici un logement en forme de pallier qui pourra accueillir un roulement à billes ou équivalent. FIG. 1 illustrates an electric compressor 9 comprising a plate 4 according to the invention. The compressor 9 is an electric compressor in that it incorporates an electric motor 2 which drives a compression mechanism 3. The electric motor 2 comprises an integrally circular periphery stator 2A and a rotor 2B integral with a transmission shaft 21 of the motor extending longitudinally along an axis H as shown in FIG. which turns to drive the compressor. The plate 4 comprises a receiving means 13 of the transmission shaft 21 of the engine originating from a bottom wall 5 of the plate 4. Said receiving means 13 here comprises a bearing-shaped housing which can accommodate a roller bearing. balls or equivalent.
Le mécanisme de compression 3 comprend des pièces fixes et des pièces mobiles, ces dernières étant mises en rotation par l'arbre 21 du moteur électrique 2. Le mécanisme de compression 3 est du type à spirale de compression (Scroll en anglais) ou du type à palettes ou encore du type à pistons, ces exemples étant donnés à titre illustratif sans pour autant limiter la portée de l'invention. The compression mechanism 3 comprises fixed parts and moving parts, the latter being set in rotation by the shaft 21 of the electric motor 2. The compression mechanism 3 is of the spiral compression type (Scroll in English) or of the type vane or piston type, these examples being given for illustrative purposes without limiting the scope of the invention.
Le compresseur 9 comprend en outre un dispositif de commande 1 du moteur électrique 2. Ce dispositif de commande 1 est notamment un onduleur (Inverter en anglais) transformant un courant continu en provenance d'un réseau de bord du véhicule en un courant sinusoïdal alimentant le moteur électrique 2. The compressor 9 further comprises a control device 1 of the electric motor 2. This control device 1 is notably an inverter (inverter in English) transforming a direct current coming from an on-board network of the vehicle into a sinusoidal current supplying the power supply. electric motor 2.
Le compresseur 9 est délimité vis-à-vis de son environnement extérieur par au moins un boîtier 7 définissant une cavité 17 accueillant ledit moteur électrique 2. Ce boîtier 7 est, par exemple, une pièce en aluminium ou en alliage d'aluminium, de forme circulaire creuse comprenant une enveloppe périphérique qui délimite un volume interne. Ce boîtier 7 comprend au moins un compartiment moteur 20 correspondant à ladite cavité 17 et dans lequel est
monté le moteur électrique. Dans l'exemple illustré, le boîtier 7 comprend également au moins un compartiment de commande 10 dans lequel est monté le dispositif de commande 1 . Ces compartiments sont des volumes distincts séparés l'un de l'autre par ladite plaque 4. La plaque 4 sépare ainsi le dispositif de commande 1 de ladite cavité 17 et du moteur électrique 2 et elle reçoit le dispositif de commande 1 . Elle forme avec le boîtier 7, le compartiment moteur 20. La plaque 4 pourra faire partie du boîtier 7, ou être assemblée à ce dernier, par exemple au moment du montage du dispositif de commande 1 sur le boîtier 7. La plaque comprend ici une paroi périphérique 6, transversale à la paroi de fond 5 de sorte que la plaque 4 définit un logement d'extrémité qui peut être qualifié de sous-boitier formant ici le compartiment de commande 10. A titre d'exemple, le logement peut être rendu étanche à l'air extérieur via un couvercle de fermeture, le sous-boitier et le couvercle coopérant mutuellement l'un avec l'autre par l'intermédiaire d'un moyen d'étanchéité approprié agencé entre ces deux éléments. The compressor 9 is delimited vis-à-vis its external environment by at least one housing 7 defining a cavity 17 accommodating said electric motor 2. This housing 7 is, for example, a piece of aluminum or aluminum alloy, of hollow circular shape comprising a peripheral envelope which delimits an internal volume. This housing 7 comprises at least one engine compartment 20 corresponding to said cavity 17 and in which is mounted the electric motor. In the example shown, the housing 7 also comprises at least one control compartment 10 in which the control device 1 is mounted. These compartments are separate volumes separated from each other by said plate 4. The plate 4 thus separates the control device 1 from said cavity 17 and the electric motor 2 and receives the control device 1. It forms with the housing 7, the engine compartment 20. The plate 4 may be part of the housing 7, or be assembled to the latter, for example at the time of mounting the control device 1 on the housing 7. The plate here comprises a peripheral wall 6, transverse to the bottom wall 5 so that the plate 4 defines an end housing which can be described as sub-housing here forming the control compartment 10. For example, the housing can be rendered external airtight via a closure lid, the sub-housing and the lid cooperating with each other via a suitable sealing means arranged between these two elements.
Le boîtier 7 du compartiment moteur 20 comprend une ouverture 8 permettant à un fluide réfrigérant d'entrer dans le boîtier 7. L'ouverture 8 est ici située au droit du moteur électrique 2, c'est-à-dire qu'elle se situe au niveau de plans perpendiculaires à l'arbre du moteur électrique 2 passant par ledit arbre moteur. The housing 7 of the engine compartment 20 comprises an opening 8 allowing a refrigerant to enter the housing 7. The opening 8 is here located right of the electric motor 2, that is to say that it is located at planes perpendicular to the shaft of the electric motor 2 passing through said motor shaft.
Le mécanisme de compression 3, situé sur la gauche de la figure, se trouve au niveau d'un premier coté longitudinal 1 1 du compartiment moteur 20.
Le dispositif de commande 1 , situé sur la droite de la figure 1 , se trouve au niveau d'un deuxième coté longitudinal 12 du moteur électrique 2, opposé au premier coté longitudinal 1 1 par rapport au moteur électrique 2. On comprend ici que le compartiment commande 10 est situé au niveau du deuxième coté 12 du compartiment moteur 20. The compression mechanism 3, located on the left of the figure, is located at a first longitudinal side 1 1 of the engine compartment 20. The control device 1, located on the right of FIG. 1, is located at a second longitudinal side 12 of the electric motor 2, opposite the first longitudinal side 1 1 with respect to the electric motor 2. It is understood here that the control compartment 10 is located at the second side 12 of the engine compartment 20.
Dans cet exemple, on rapporte au boîtier 7, le sous-boîtier formant le compartiment de commande 10 dans lequel est logé le dispositif de commande 1 au niveau du deuxième coté 12 du compartiment moteur 20, et un sous-boîtier formant un compartiment de compression 30 dans lequel est logé le mécanisme de compression 3 au niveau du premier coté 1 1 du moteur électrique. Autrement dit, le compartiment moteur 20 est intercalé entre le compartiment de commande 10 et le compartiment de compression 30. On comprendra donc que ces compartiments peuvent être délimités par une unique pièce périphérique qui forme un boîtier unique, muni de cloison de séparation, ou, par exemple, par des sous-boîtiers distincts dédiés à chaque compartiment et assemblés les uns aux autres. In this example, reference is made to the housing 7, the sub-housing forming the control compartment 10 in which is housed the control device 1 at the second side 12 of the engine compartment 20, and a sub-housing forming a compression compartment 30 in which is housed the compression mechanism 3 at the first side 1 1 of the electric motor. In other words, the engine compartment 20 is interposed between the control compartment 10 and the compression compartment 30. It will therefore be understood that these compartments may be delimited by a single peripheral part which forms a single housing, provided with a partition, or, for example, by separate sub-housings dedicated to each compartment and assembled to each other.
La plaque 4 peut ainsi faire partie du boîtier 7, du sous-boîtier formant le compartiment de commande 10 ou être rapporté entre le boîtier 7 et le sous-boîtier formant le compartiment de commande 10. The plate 4 can thus be part of the housing 7, the sub-housing forming the control compartment 10 or be connected between the housing 7 and the sub-housing forming the control compartment 10.
En fonctionnement, le fluide réfrigérant ou mélange constitué d'un fluide réfrigérant mélangé à un lubrifiant, entre dans le compartiment moteur 20 par
l'ouverture 8. Le fluide réfrigérant est un fluide sous critique tel que par exemple le R134a mais il peut également s'agir d'un fluide réfrigérant super-critique tel que par exemple le dioxyde de carbone connu sous l'appellation R744. Le lubrifiant est par exemple un composé de type Polyalkylène glycol. In operation, the refrigerant or mixture consisting of a coolant mixed with a lubricant, enters the engine compartment 20 through the opening 8. The refrigerant fluid is a subcritical fluid such as for example the R134a but it can also be a supercritical refrigerant such as for example carbon dioxide known as R744. The lubricant is for example a polyalkylene glycol type compound.
Le fluide circule dans le compartiment moteur 20 puis dans le compartiment de compression 30 dans lequel est logé le mécanisme de compression 3. Ce dernier assure l'augmentation désirée de pression et de température du fluide réfrigérant. La circulation du fluide réfrigérant au contact du moteur permet le refroidissement de ce dernier. The fluid flows in the engine compartment 20 and in the compression compartment 30 in which is housed the compression mechanism 3. The latter ensures the desired increase in pressure and temperature of the refrigerant. The circulation of the coolant in contact with the engine allows the cooling of the latter.
Comme expliqué précédemment, le compartiment moteur 20 est séparé du compartiment de commande 10 par la plaque 4 qui empêche la pénétration du fluide dans le compartiment de commande 10. On comprend donc que le fluide présent dans le compartiment moteur 20 ne circule pas dans le compartiment de commande 10 pour protéger le dispositif de commande 1 qui comprend des éléments ayant de forts potentiels électriques. As explained above, the engine compartment 20 is separated from the control compartment 10 by the plate 4 which prevents the penetration of the fluid into the control compartment 10. It is thus clear that the fluid present in the engine compartment 20 does not circulate in the compartment control device 10 for protecting the control device 1 which comprises elements having high electrical potentials.
Le dispositif de commande 1 fournit l'énergie électrique au moteur électrique 2. Comme ces composants sont dans deux compartiments distincts, il est nécessaire de raccorder électriquement le dispositif de commande 1 au moteur électrique 2 par un dispositif de raccordement électrique monté à l'interface entre le compartiment moteur 20 et le compartiment de commande 10, par exemple à travers la paroi de fond 5 de la plaque 4.
Les composants électriques du dispositif de commande 1 dégagent une quantité importante de chaleur et il est donc nécessaire de les refroidir, notamment en refroidissant la paroi de fond 5 de la plaque 4. Pour ce faire, ladite plaque 4 définit un canal 40 de circulation du fluide réfrigérant destiné à guider le fluide réfrigérant dans un plan parallèle à ladite paroi de fond 5 de la plaque 4, sur moins d'un tour autour du moyen de réception 13 et dans un même sens D. Le fluide est ainsi guidé vers une zone prédéterminée 47 de la paroi de fond 5 contre laquelle sont disposés des éléments de puissance du dispositif de commande qui nécessitent un refroidissement augmenté. On comprend que le fluide rentre en contact avec la paroi de fond 5 de la plaque 4 au niveau de la flèche référencée 35 sur la figure 2 et est guidé autour du moyen de réception 13, sur moins d'un tour et selon le sens unique D. Le canal 40 permet ainsi au fluide de circuler sur presque la totalité de la plaque 4 de manière à la refroidir, en tournant autour du moyen de réception 13, sans entraîner d'importantes pertes de charge puisque la totalité du fluide se dirigera à travers le compartiment moteur et vers le compartiment de compression avant d'avoir effectué un tour entier autour du moyen de réception 13. The control device 1 supplies the electrical energy to the electric motor 2. Since these components are in two separate compartments, it is necessary to electrically connect the control device 1 to the electric motor 2 by an electrical connection device mounted at the interface between the engine compartment 20 and the control compartment 10, for example through the bottom wall 5 of the plate 4. The electrical components of the control device 1 release a large amount of heat and it is therefore necessary to cool them, in particular by cooling the bottom wall 5 of the plate 4. To do this, said plate 4 defines a channel 40 for circulation of the refrigerant fluid for guiding the refrigerant in a plane parallel to said bottom wall 5 of the plate 4, on less than one turn around the receiving means 13 and in the same direction D. The fluid is thus guided to a zone predetermined 47 of the bottom wall 5 against which are arranged power elements of the control device that require increased cooling. It is understood that the fluid comes into contact with the bottom wall 5 of the plate 4 at the arrow referenced 35 in Figure 2 and is guided around the receiving means 13, on less than one turn and in the one-way D. The channel 40 thus allows the fluid to circulate on almost the entire plate 4 so as to cool, by rotating around the receiving means 13, without causing significant pressure losses since the entire fluid will go to through the engine compartment and to the compression compartment before having made a complete revolution around the receiving means 13.
Ainsi, le fluide entre dans le boîtier 7 par l'ouverture 8, est guidé pour tourner autour du moyen de réception 13 par le canal 40 et traverse le moteur pour atteindre le compresseur qu'il traverse à son tour. Thus, the fluid enters the casing 7 through the opening 8, is guided to rotate around the receiving means 13 by the channel 40 and passes through the engine to reach the compressor it passes through in turn.
Le canal 40 est conçu de telle manière que sa profondeur évolue entre
une profondeur moindre située au niveau d'une zone amont par rapport au sens d'écoulement du fluide et une profondeur augmentée au niveau d'une zone aval située à proximité de ladite zone prédéterminée 47 nécessitant un refroidissement spécifique. Ainsi le mouvement du fluide réfrigérant tend vers une direction du fluide réfrigérant opposée au moteur et au dispositif de compression. Channel 40 is designed in such a way that its depth evolves between a lower depth located at an upstream zone with respect to the direction of flow of the fluid and an increased depth at a downstream zone located near said predetermined zone 47 requiring specific cooling. Thus the movement of the refrigerant fluid tends towards a direction of the coolant opposite the engine and the compression device.
La plaque 4 comprend ici un collecteur proximal 50 et un collecteur distal 52 du fluide entre lesquels le canal 40 s'étend. Au niveau desdits collecteurs 50, 52 la section de passage du fluide est plus large et l'effet de guidage est réduit par rapport à celui offert par le canal 40. The plate 4 here comprises a proximal collector 50 and a distal collector 52 of the fluid between which the channel 40 extends. At said collectors 50, 52, the fluid passage section is wider and the guiding effect is reduced compared to that offered by the channel 40.
La plaque 4 comprend par exemple une cloison 46 guidant le fluide à la sortie de l'ouverture 8 dans la direction du sens D. La cloison 46 définit au moins en partie le collecteur proximal 52. La cloison 46 bloque également le fluide lorsqu'il a effectué sa rotation autour du moyen de réception de sorte qu'il effectue moins d'un tour autour du moyen de réception 13. The plate 4 comprises for example a partition 46 guiding the fluid at the outlet of the opening 8 in the direction of the direction D. The partition 46 at least partially defines the proximal collector 52. The partition 46 also blocks the fluid when has rotated around the receiving means so that it performs less than one revolution around the receiving means 13.
De plus, la cloison 46 limite le passage du réfrigérant par la zone du terminal électrique et du connecteur d'alimentation du moteur, en le forçant à passer par l'entrée du canal 40. In addition, the partition 46 limits the passage of the refrigerant through the area of the electrical terminal and the engine power connector, forcing it to pass through the entrance of the channel 40.
Dans un mode de réalisation particulier, la cloison 46 peut également former une cavité pénétrant dans le compartiment moteur 20. La cavité 46 est
alors destinée en premier lieu à recevoir des composants, par exemple des capacités, ce qui leur permet d'avoir un refroidissement optimal. In a particular embodiment, the partition 46 may also form a cavity penetrating into the engine compartment 20. The cavity 46 is then intended primarily to receive components, such as capacity, which allows them to have optimal cooling.
La plaque 4 comprend des bossages 41 , ici au nombre de trois, s'étendant de manière transversale à la paroi de fond 5, notamment perpendiculaire, et destinés à recevoir des moyens de fixation 42 de la plaque sur le boîtier 7. Les bossages 41 sont par exemple situés le long de la paroi périphérique 6. Ils s'étendent vers l'intérieur du compresseur 9, c'est-à-dire vers l'intérieur du boîtier 7. Les bossages 41 sont reliés entre eux par une paroi 45 définissant un bord dudit canal 40 de circulation. La paroi 45 reste concave entre lesdits bossages 41 . Elle est en outre ici en arc de cercle entre lesdits bossages 41 . Elle est par exemple sensiblement parallèle à la paroi périphérique 6. Le canal 40 permet ainsi d'éviter des zones de repli du fluide, qui créeraient des zones de turbulences s'opposant au sens d'écoulement D du fluide . Un tel canal 40 permet ainsi une réduction substantielle de la perte de charge. Le bord opposé du canal 40 est ici défini par le pallier des moyens de réception 13. The plate 4 comprises bosses 41, here three in number, extending transversely to the bottom wall 5, in particular perpendicular, and intended to receive fastening means 42 of the plate on the housing 7. The bosses 41 are for example located along the peripheral wall 6. They extend inwardly of the compressor 9, that is to say towards the inside of the housing 7. The bosses 41 are interconnected by a wall 45 defining an edge of said circulation channel 40. The wall 45 remains concave between said bosses 41. It is also here in an arc between said bosses 41. For example, it is substantially parallel to the peripheral wall 6. The channel 40 thus makes it possible to avoid fluid foldback zones, which would create zones of turbulence opposing the direction of flow D of the fluid. Such a channel 40 thus allows a substantial reduction in the pressure drop. The opposite edge of the channel 40 is here defined by the landing of the receiving means 13.
Il est à noter que le canal 40 réduit de manière relativement importante les pertes de charge en permettant à une grande partie de réfrigérant de circuler avec un nombre relativement faible, voire nul, d'obstacles jusqu'à ladite zone prédéterminée. De ce fait, cela réduit la portion de réfrigérant qui est directement aspirée par le mécanisme de compression. It should be noted that the channel 40 reduces the pressure losses relatively relatively by allowing a large portion of refrigerant to circulate with a relatively small number, or even zero, of obstacles up to said predetermined zone. As a result, it reduces the portion of refrigerant that is directly sucked by the compression mechanism.
De cette manière, le fluide réfrigérant qui entre dans le canal 40 par
l'ouverture 8 est guidé par la cloison 46 vers le canal 40 puis par la paroi 45 autour du moyen de réception 13 en suivant le sens de la flèche référencée D, qui est identique au sens de rotation du rotor du moteur électrique, sur moins d'un tour. Le fluide réfrigérant arrivant dans le canal 40 est en effet aspiré par le mécanisme de compression et, compte-tenu de la conformation du canal 40, guidé le long de la paroi de fond 5 de la plaque 4. In this way, the refrigerant which enters the channel 40 through the opening 8 is guided by the partition 46 to the channel 40 and then by the wall 45 around the receiving means 13 in the direction of the arrow referenced D, which is identical to the direction of rotation of the rotor of the electric motor, on less of a turn. The refrigerating fluid arriving in the channel 40 is in fact sucked by the compression mechanism and, taking into account the conformation of the channel 40, guided along the bottom wall 5 of the plate 4.
Les bossages 41 , la cloison 46 et/ou la paroi 45 sont par exemple formés à partir de la paroi périphérique 6 et/ou de la paroi de fond 5 de la plaque 4, c'est-à-dire, en continuité de matière du reste de la plaque 4 qui pourra être obtenu par forgeage ou moulage. The bosses 41, the partition 46 and / or the wall 45 are for example formed from the peripheral wall 6 and / or the bottom wall 5 of the plate 4, that is to say, in continuity of material the rest of the plate 4 which can be obtained by forging or molding.
Le canal 40 permet en outre à un maximum de fluide de passer à travers le moteur et non à l'extérieur de celui-ci, c'est-à-dire à l'extérieur du stator. Le refroidissement du moteur est ainsi amélioré. C'est notamment grâce à la surépaisseur de matière créée par les bossages 41 et la paroi 45 que le canal 40 guide le fluide en priorité vers le centre du moteur et non vers sa périphérie. The channel 40 further allows a maximum of fluid to pass through the engine and not outside thereof, that is to say outside the stator. The engine cooling is thus improved. It is in particular thanks to the extra thickness of material created by the bosses 41 and the wall 45 that the channel 40 guides the fluid in priority towards the center of the motor and not towards its periphery.
La plaque de l'invention apporte ainsi une solution à l'optimisation du refroidissement sans dégrader le rendement global du compresseur
The plate of the invention thus provides a solution to the optimization of cooling without degrading the overall efficiency of the compressor
Claims
1 . Plaque (4) d'un compresseur électrique (9) de fluide réfrigérant, destinée à séparer un moteur électrique (2) du compresseur électrique (9) d'un dispositif de commande électrique (1 ) dudit moteur électrique (2), ladite plaque (4) comprenant une paroi de fond (5) et un moyen de réception (13) d'un arbre de transmission (21 ) du moteur (2) prenant naissance depuis la paroi de fond (5) de la plaque (4), caractérisé par le fait que ladite plaque (4) définit un canal (40) de circulation dudit fluide réfrigérant destiné à guider le fluide réfrigérant sur moins d'un tour autour du moyen de réception (13) et selon un unique sens (D). 1. Plate (4) of an electric refrigerant compressor (9) for separating an electric motor (2) from the electric compressor (9) of an electric control device (1) of said electric motor (2), said plate (4) comprising a bottom wall (5) and a receiving means (13) of a transmission shaft (21) of the motor (2) originating from the bottom wall (5) of the plate (4), characterized in that said plate (4) defines a channel (40) for circulating said coolant for guiding the coolant on less than one turn around the receiving means (13) and in a single direction (D).
2. Plaque (4) selon la revendication 1 , dans laquelle la plaque (4) comprend des bossages (41 ) s'étendant de manière transversale à la paroi de fond (5) et destinés à recevoir des moyens de fixation (42) de la plaque (4) à un boîtier (7) configuré pour recevoir ledit moteur électrique (2), lesdits bossages (41 ) étant reliés entre eux par une paroi (45) définissant un bord dudit canal (40) de circulation. 2. Plate (4) according to claim 1, wherein the plate (4) comprises bosses (41) extending transversely to the bottom wall (5) and intended to receive fastening means (42) of the plate (4) has a housing (7) configured to receive said electric motor (2), said bosses (41) being interconnected by a wall (45) defining an edge of said circulation channel (40).
3. Plaque selon la revendication 2, dans laquelle ladite paroi (45) reste concave entre lesdits bossages (41 ). 3. Plate according to claim 2, wherein said wall (45) remains concave between said bosses (41).
4. Plaque selon la revendication 2 ou 3, dans laquelle ladite paroi (45) est en arc de cercle entre lesdits bossages (41 ).
4. Plate according to claim 2 or 3, wherein said wall (45) is in an arc between said bosses (41).
5. Plaque (4) selon l'une des revendications 2 à 4, dans laquelle la plaque (4) comprend trois bossages (41 ) reliés entre eux par ladite paroi (45). 5. Plate (4) according to one of claims 2 to 4, wherein the plate (4) comprises three bosses (41) interconnected by said wall (45).
6. Plaque (4) selon l'une des revendications 2 à 5, dans laquelle ladite paroi (45) est formée en continuité de matière du reste de ladite plaque (4). 6. Plate (4) according to one of claims 2 to 5, wherein said wall (45) is formed in continuous material from the rest of said plate (4).
7. Plaque (4) selon l'une quelconque des revendications précédentes, dans laquelle ladite plaque (4) comprend une cloison (46) destinée à guider le fluide vers ledit canal (40) à son entrée en contact avec la plaque (4). 7. Plate (4) according to any one of the preceding claims, wherein said plate (4) comprises a partition (46) for guiding the fluid to said channel (40) at its entry into contact with the plate (4). .
8. Plaque (4) selon la revendication 7, dans laquelle ladite cloison (46) est formée en continuité de matière du reste de ladite plaque (4). 8. Plate (4) according to claim 7, wherein said partition (46) is formed in continuity material from the rest of said plate (4).
9. Compresseur électrique (9) comprenant une plaque (4) selon l'une quelconque des revendications précédentes. 9. Electric compressor (9) comprising a plate (4) according to any one of the preceding claims.
10. Compresseur électrique (9) selon la revendication 9, dans lequel le boîtier (7) comprend une ouverture (8) par laquelle le fluide entre dans le boîtier (7) au niveau d'un collecteur d'entrée.
The electric compressor (9) according to claim 9, wherein the housing (7) comprises an opening (8) through which fluid enters the housing (7) at an inlet manifold.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15756986.4A EP3167193A1 (en) | 2014-07-07 | 2015-07-07 | Electric compressor plate and electric compressor comprising such a plate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR14/56513 | 2014-07-07 | ||
FR1456513A FR3023328B1 (en) | 2014-07-07 | 2014-07-07 | PLATE OF AN ELECTRIC COMPRESSOR AND ELECTRIC COMPRESSOR COMPRISING SUCH A PLATE |
Publications (1)
Publication Number | Publication Date |
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WO2016005890A1 true WO2016005890A1 (en) | 2016-01-14 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/IB2015/055116 WO2016005890A1 (en) | 2014-07-07 | 2015-07-07 | Electric compressor plate and electric compressor comprising such a plate |
Country Status (3)
Country | Link |
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EP (1) | EP3167193A1 (en) |
FR (1) | FR3023328B1 (en) |
WO (1) | WO2016005890A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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FR3065758B1 (en) * | 2017-04-27 | 2019-05-03 | Valeo Japan Co., Ltd. | ELECTRIC COMPRESSOR |
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JP2005291004A (en) * | 2004-03-31 | 2005-10-20 | Sanden Corp | Electric compressor |
EP1980749A1 (en) * | 2006-01-30 | 2008-10-15 | Sanden Corporation | Electric compressor, and air conditioning system for vehicle, using the electric compressor |
EP2204581A1 (en) * | 2007-09-25 | 2010-07-07 | Sanden Corporation | Electric compressor integral with drive circuit |
EP2306021A1 (en) * | 2008-05-28 | 2011-04-06 | Sanden Corporation | Electric compressor |
FR2975448A1 (en) * | 2011-05-19 | 2012-11-23 | Valeo Thermal Sys Japan Co | MODULAR ELECTRICAL COMPRESSOR WITH INTEGRATED FIXING DEVICE |
-
2014
- 2014-07-07 FR FR1456513A patent/FR3023328B1/en active Active
-
2015
- 2015-07-07 EP EP15756986.4A patent/EP3167193A1/en not_active Withdrawn
- 2015-07-07 WO PCT/IB2015/055116 patent/WO2016005890A1/en active Application Filing
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2005291004A (en) * | 2004-03-31 | 2005-10-20 | Sanden Corp | Electric compressor |
EP1980749A1 (en) * | 2006-01-30 | 2008-10-15 | Sanden Corporation | Electric compressor, and air conditioning system for vehicle, using the electric compressor |
EP2204581A1 (en) * | 2007-09-25 | 2010-07-07 | Sanden Corporation | Electric compressor integral with drive circuit |
EP2306021A1 (en) * | 2008-05-28 | 2011-04-06 | Sanden Corporation | Electric compressor |
FR2975448A1 (en) * | 2011-05-19 | 2012-11-23 | Valeo Thermal Sys Japan Co | MODULAR ELECTRICAL COMPRESSOR WITH INTEGRATED FIXING DEVICE |
Also Published As
Publication number | Publication date |
---|---|
FR3023328A1 (en) | 2016-01-08 |
EP3167193A1 (en) | 2017-05-17 |
FR3023328B1 (en) | 2019-03-22 |
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