Dielectric fluid circuit for a thermal regulation device, in particular for a motor vehicle

Abstract

Dielectric fluid circuit for a thermal regulation device, in particular for a motor vehicle The invention relates to a dielectric fluid circuit for a thermal regulation device, said circuit comprising at least one dielectric fluid distribution conduit (11) and a predefined number of spray nozzles (13) configured to spray dielectric fluid, through at least one projection orifice. At least two projection orifices are configured to spray at least one common area (Z1, Z2) of at least one housing (7) of said device. At least one first orifice is arranged to spray at least one first jet (J1) of dielectric fluid onto the common area (Z1, Z2) at a first distance (D1) from an edge of the housing (7). At least one second orifice is arranged to spray at least one second jet (J2) of dielectric fluid onto the common area (Z1, Z2) at a second distance (D2) further from the edge of the housing (7).Figure for abstract: Fig. 3.

Description

Title of the invention: Dielectric fluid circuit for a thermal regulation device, in particular for a motor vehicle

[0001] The present invention relates to the field of thermal regulation devices for electrical and / or electronic components likely to release heat during their operation, particularly in the automotive field. The invention relates in particular to a dielectric fluid circuit for such a thermal regulation device.

[0002] The components that may be concerned by the present invention may be electrical energy storage elements, in particular battery elements, or power electronics, for example, but not limited to, semiconductors, such as diodes or transistors. They could also be computer server components.

[0003] The invention finds an advantageous application in the field of thermal regulation devices for a power electronics device or module, i.e. comprising power electronic components. In operation, the temperature of such a power electronics device or module may rise, which risks damaging some of the power electronic components.

[0004] The invention also finds an advantageous application in the field of thermal regulation devices for an electrical energy storage device, such as a set of batteries or battery pack for a motor vehicle with an electric and / or hybrid engine. The electrical energy of vehicles with an electric and / or hybrid engine is supplied by one or more batteries. During their operation, the electrical energy storage elements such as the batteries are caused to heat up and thus risk being damaged. In particular, a charging technique, called rapid charging, consists of charging the energy storage elements under a high voltage and a high amperage, in a short time, in particular in a maximum time of around twenty minutes. This rapid charging involves significant heating of the electrical energy storage elements which must be treated.

[0005] In the field of motor vehicles, it is known to use a thermal regulation device, in particular for cooling, components for example for storing electrical energy, such as batteries. Such a thermal regulation device makes it possible to modify a temperature of an electrical energy storage device, for example when starting the vehicle in cold weather, by increasing its temperature for example, or whether during driving or during a recharging operation of said system, by reducing the temperature of the elements battery, which tend to heat up during use.

[0006] According to another known thermal regulation solution, in particular for the cooling of components, such as battery elements, a dielectric fluid is projected, generally in the form of a spray or conical jet, directly onto the components, by means of a dielectric fluid circuit and orifices or nozzles for spraying the dielectric fluid. A heat exchange can then take place between the components and the dielectric fluid which comes into direct contact with a surface of the components.

[0007] However, under operating conditions, it has been found that the dielectric fluid is not necessarily sprayed uniformly relative to the surface of the components to be sprayed. This results in thermal regulation, and in particular cooling which may not be uniform. Dead zones, i.e. zones which are little or not sprayed, of the components can lead to local overheating and poor uniformity of the temperature of the components.

[0008] One solution may be to increase the number of nozzles to spray dielectric fluid onto the surface of the components, limiting dead zones. However, this solution is expensive.

[0009] The present invention aims to at least partially overcome one or more of the aforementioned drawbacks by proposing an alternative dielectric fluid circuit allowing homogeneous spraying of the dielectric fluid, to avoid dead zones and an imbalance in the thermal regulation, such as the cooling, of the components.

[0010] For this purpose, the invention relates to a dielectric fluid circuit for a thermal regulation device, in particular for a motor vehicle, configured to receive a predefined number of electronic and / or electrical components to be thermally regulated, the dielectric fluid circuit comprising at least one dielectric fluid distribution conduit and a predefined number of spray nozzles arranged on at least one associated distribution conduit and configured to spray dielectric fluid, through at least one spray orifice.

[0011] According to the invention, at least two projection orifices, of a spray nozzle or of at least two spray nozzles arranged on the same distribution conduit, are configured to spray at least one common zone of at least one housing of said device, the common zone being intended to comprise at least one electronic and / or electrical component.

[0012] At least one first orifice is arranged and configured to project at least one first jet of dielectric fluid onto the common area at a first distance from an edge of the housing.

[0013] At least one second orifice is arranged and configured to project at least a second jet of dielectric fluid onto the common area at a second distance from the edge of the housing, the second distance being further than the first distance from the edge of the housing.

[0014] The two jets of dielectric fluid allow a good distribution of the dielectric fluid over the common area to be sprayed of one or more components or modules. This makes it possible to avoid dead zones which would not be sprayed with dielectric fluid.

[0015] The dielectric fluid circuit may further comprise one or more of the following features described below, taken separately or in combination.

[0016] The common area may define a generally rectangular shape of width in a direction transverse to a main extension direction of the distribution duct.

[0017] At least one first orifice may be arranged and configured to project at least one first jet of dielectric fluid onto the common area corresponding to a first width less than or equal to half the width of the common area.

[0018] At least one second orifice may be arranged and configured to project at least one second jet of dielectric fluid onto the corresponding common area at a width less than or equal to the width of the common area.

[0019] The nozzle head(s) may be shaped such that the second orifice is above the first orifice along a longitudinal axis of the spray nozzle body, on the side opposite the associated distribution duct.

[0020] At least one primary dielectric fluid distribution conduit and one secondary dielectric fluid distribution conduit may be configured to be arranged on either side of the housing. At least one spray nozzle may be arranged on each distribution conduit.

[0021] At least two primary spray orifices, of a spray nozzle or at least two spray nozzles arranged on the primary distribution conduit, may be configured to spray dielectric fluid onto a corresponding primary common area of the housing.

[0022] At least one first primary orifice may be arranged and configured to project at least one first jet of dielectric fluid onto the primary common area at a first distance from an edge of the housing.

[0023] At least one second primary orifice may be arranged and configured to project at least one second jet of dielectric fluid onto the primary common area at a second distance from the edge of the housing, the second distance being further than the first distance from the edge of the housing.

[0024] At least two secondary spray orifices, of another spray nozzle or at least two other spray nozzles arranged on the secondary distribution conduit, may be configured to spray dielectric fluid onto an area corresponding secondary common area of the accommodation, said secondary common area being distinct from said primary common area.

[0025] At least one first secondary orifice may be arranged and configured to project at least one first jet of dielectric fluid onto the secondary common area at a first distance from an edge of the housing.

[0026] At least one second secondary orifice may be arranged and configured to project at least one second jet of dielectric fluid onto the secondary common area at a second distance from the edge of the housing, the second distance being further than the first distance from the edge of the housing.

[0027] According to one example, the two common areas may be facing each other.

[0028] The housing may be configured to define a surface to be sprayed with fluid. electrical conduit of generally rectangular shape having a width in a direction transverse to the main extension direction of the distribution conduit.

[0029] For each primary, respectively secondary common zone, the at least one first primary, respectively secondary, orifice can be arranged and configured so as to project at least one first jet of dielectric fluid onto the primary, respectively secondary common zone, corresponding to a first width less than or equal to a quarter of the width of the housing.

[0030] For each primary, respectively secondary common area, the at least one second primary, respectively secondary, orifice may be arranged and configured so as to project at least one second jet of dielectric fluid onto the primary, respectively secondary common area, corresponding to a width less than or equal to half the width of the housing. This makes it possible to avoid dead zones in the center of the housing.

[0031] According to an alternative embodiment, at least one first spray nozzle comprising said first orifice and at least one second spray nozzle comprising said second orifice may be arranged side by side on the same distribution conduit in a main extension direction of the distribution conduit, at a distance less than or equal to 2 mm from each other.

[0032] In a particular embodiment, the spray nozzles may respectively comprise a body extending mainly along a longitudinal axis. The longitudinal axis may be inclined relative to a main extension direction of said distribution conduit. This longitudinal axis may be configured to be inclined relative to a surface to be sprayed with dielectric fluid defined by the housing.

[0033] The second spray nozzle may have a longer body than the first nozzle.

[0034] According to another variant embodiment, at least one spray nozzle arranged on the associated distribution conduit may comprise a body comprising said first orifice and said second orifice. Said second orifice may be located above said first orifice along a longitudinal axis of the body of said nozzle, on the side opposite the associated distribution duct.

[0035] In a particular embodiment, the body of said nozzle may extend mainly along a longitudinal axis. The longitudinal axis may be inclined relative to a main extension direction of said distribution conduit. This longitudinal axis may be configured to be inclined relative to a surface to be sprayed with dielectric fluid defined by the housing.

[0036] The spray nozzle may comprise a projection channel extending within the body of the spray nozzle and intended to be traversed by the dielectric fluid, the projection channel opening onto said first orifice and onto said second orifice.

[0037] Alternatively, the spray nozzle may comprise a first projection channel within which the dielectric fluid is intended to flow, extending within the body of the spray nozzle and opening onto said first orifice. The spray nozzle may also comprise a second projection channel, distinct from the first projection channel, within which the dielectric fluid is intended to flow, extending within the body of the spray nozzle and opening onto said second orifice.

[0038] The spray nozzle may comprise at least a first nozzle head comprising said first orifice and a second nozzle head comprising said second orifice.

[0039] The first nozzle head can be inclined at a first angle of inclination relative to the longitudinal axis of the body of said nozzle.

[0040] The second nozzle head can be inclined by a second angle of inclination, distinct from the first angle of inclination, relative to the longitudinal axis of the body of said nozzle.

[0041] The second tilt angle may be greater than the first tilt angle.

[0042] For example, in a non-limiting manner, the angles can be between 105° and 170° relative to the longitudinal axis of the body of said nozzle.

[0043] According to another aspect of the invention, at least two series of spray nozzles can be arranged on the same associated distribution conduit.

[0044] The spray nozzles of a series may be oriented so as to spray dielectric fluid onto a first housing of said device configured to receive a predefined number of electronic and / or electrical components.

[0045] The spray nozzles of another series may be oriented so as to spray dielectric fluid onto a second housing of said device configured to receive other electronic and / or electrical components.

[0046] The spray nozzles of the two series are for example arranged back to back.

[0047] According to another example, the spray nozzles of the two series are offset according to a

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[0055] main extension direction of said distribution duct. Dielectric fluid jets may be generally fan-shaped, falling between two main directions. Alternatively, dielectric fluid jets may have other shapes, such as a conical shape. The invention also relates to a thermal regulation device, in particular for a motor vehicle, comprising at least one housing configured to receive a predefined number of electronic and / or electrical components to be thermally regulated, and a dielectric fluid circuit comprising at least one dielectric fluid distribution conduit and a predefined number of spray nozzles arranged on the at least one associated distribution conduit and configured to spray dielectric fluid, through at least one spray orifice, characterized in that: - at least two projection orifices, of a spray nozzle or of at least two spray nozzles arranged on the same distribution conduit, are configured to spray at least one common area of the at least one housing of said device, the common area being intended to comprise at least one electronic and / or electrical component, such as: - at least one first orifice is arranged and configured so as to project at least one first jet of dielectric fluid onto the common area at a first distance from an edge of the housing, and - at least one second orifice is arranged and configured to project at least one second jet of dielectric fluid onto the common area at a second distance from the edge of the housing, the second distance being further than the first distance from the edge of the housing. The thermal regulation device may further comprise one or more of the following features described below, taken separately or in combination. The common area may define a general rectangular shape of width in a direction transverse to a main extension direction of the distribution duct. At least one first orifice may be arranged and configured to project at least one first jet of dielectric fluid onto the corresponding common area at a first width less than or equal to half the width of the common area. At least one second orifice may be arranged and configured to project at least one second jet of dielectric fluid onto the corresponding common area at a width less than or equal to the width of the common area. The nozzle head(s) may be shaped such that the second orifice is above the first orifice along a longitudinal axis of the spray nozzle body, on the side opposite the associated distribution duct. At least one primary dielectric fluid distribution conduit and one secondary dielectric fluid distribution conduit may be configured to be arranged on either side of the housing. At least one sprinkler nozzle can be arranged on each distribution duct.

[0056] At least two primary spray orifices, of a spray nozzle or at least two spray nozzles arranged on the primary distribution conduit, may be configured to spray dielectric fluid onto a corresponding primary common area of the housing.

[0057] At least one first primary orifice may be arranged and configured to project at least one first jet of dielectric fluid onto the primary common area at a first distance from an edge of the housing.

[0058] At least one second primary orifice may be arranged and configured to project at least one second jet of dielectric fluid onto the primary common area at a second distance from the edge of the housing, the second distance being further than the first distance from the edge of the housing.

[0059] At least two secondary spray orifices, of another spray nozzle or of at least two other spray nozzles arranged on the secondary distribution conduit, may be configured to spray dielectric fluid onto a corresponding secondary common area of the housing, said secondary common area being distinct from said primary common area.

[0060] At least one first secondary orifice may be arranged and configured to project at least one first jet of dielectric fluid onto the secondary common area at a first distance from an edge of the housing.

[0061] At least one second secondary orifice may be arranged and configured to project at least one second jet of dielectric fluid onto the secondary common area at a second distance from the edge of the housing, the second distance being further than the first distance from the edge of the housing.

[0062] According to one example, the two common areas may be facing each other.

[0063] The housing may be configured to define a surface to be sprayed with fluid. electrical conduit of generally rectangular shape having a width in a direction transverse to the main extension direction of the distribution conduit.

[0064] For each primary, respectively secondary common zone, the at least one first primary, respectively secondary, orifice can be arranged and configured so as to project at least one first jet of dielectric fluid onto the primary, respectively secondary common zone, corresponding to a first width less than or equal to a quarter of the width of the housing.

[0065] For each primary, respectively secondary common zone, the at least one second primary, respectively secondary, orifice can be arranged and configured so as to project at least one second jet of dielectric fluid onto the primary, respectively secondary common zone, corresponding to a width less than or equal to half the width of the housing. This helps avoid dead zones in the center of the housing.

[0066] According to an alternative embodiment, at least one first spray nozzle comprising said first orifice and at least one second spray nozzle comprising said second orifice may be arranged side by side on the same distribution conduit in a main extension direction of the distribution conduit, at a distance less than or equal to 2 mm from each other.

[0067] In a particular embodiment, the spray nozzles may respectively comprise a body extending mainly along a longitudinal axis. The longitudinal axis may be inclined relative to a main extension direction of said distribution conduit. This longitudinal axis may be configured to be inclined relative to a surface to be sprayed with dielectric fluid defined by the housing.

[0068] The second spray nozzle may have a longer body than the first nozzle.

[0069] According to another embodiment variant, at least one spray nozzle arranged on the associated distribution conduit may comprise a body comprising said first orifice and said second orifice. Said second orifice may be located above said first orifice along a longitudinal axis of the body of said nozzle, on the side opposite the associated distribution conduit.

[0070] In a particular embodiment, the body of said nozzle may extend mainly along a longitudinal axis. The longitudinal axis may be inclined relative to a main extension direction of said distribution conduit. This longitudinal axis may be configured to be inclined to a surface to be sprayed with dielectric fluid defined by the housing.

[0071] The spray nozzle may comprise a projection channel extending within the body of the spray nozzle and intended to be traversed by the dielectric fluid, the projection channel opening onto said first orifice and onto said second orifice.

[0072] Alternatively, the spray nozzle may comprise a first projection channel within which the dielectric fluid is intended to flow, extending within the body of the spray nozzle and opening onto said first orifice. The spray nozzle may also comprise a second projection channel, distinct from the first projection channel, within which the dielectric fluid is intended to flow, extending within the body of the spray nozzle and opening onto said second orifice.

[0073] The spray nozzle may comprise at least a first nozzle head comprising said first orifice and a second nozzle head comprising said second orifice.

[0074] The first nozzle head can be inclined at a first angle of inclination relative to the longitudinal axis of the body of said nozzle.

[0075] The second nozzle head can be inclined by a second angle of inclination, distinct from the first angle of inclination, relative to the longitudinal axis of the body of said nozzle.

[0076] The second tilt angle may be greater than the first tilt angle.

[0077] For example, without limitation, the angles can be between 105° and 170° relative to the longitudinal axis of the body of said nozzle.

[0078] According to another aspect of the invention, at least two series of spray nozzles can be arranged on the same associated distribution conduit.

[0079] The spray nozzles of a series may be oriented so as to spray dielectric fluid onto a first housing of said device configured to receive a predefined number of electronic and / or electrical components.

[0080] The spray nozzles of another series may be oriented so as to spray dielectric fluid onto a second housing of said device configured to receive other electronic and / or electrical components.

[0081] The spray nozzles of the two series are for example arranged back to back.

[0082] According to another example, the spray nozzles of the two series are offset according to a main extension direction of said distribution duct.

[0083] The dielectric fluid jets may be generally fan-shaped, extending between two main directions. Alternatively, the dielectric fluid jets may have other shapes, for example a conical shape.

[0084] The invention may also relate to a battery pack. The battery pack may comprise modules / rows of several electrical energy storage cells connected to each other. The battery pack may comprise at least one thermal regulation device comprising a dielectric fluid circuit as defined previously.

[0085] Other advantages and characteristics of the invention will appear more clearly on reading the following description given by way of illustrative and non-limiting example, and the appended drawings among which:

[0086] [Fig.l] shows a top view of a thermal regulation device according to one embodiment.

[0087] [Fig.2] is an enlarged view of [Fig.l] showing a dielectric fluid circuit of the thermal regulation device.

[0088] [Fig.3] is a schematic representation showing two distribution conduits of dielectric fluid equipped with nozzles for spraying the dielectric fluid circuit, arranged on either side of a housing for components to be thermally regulated.

[0089] [Fig.4a] shows a first example of the embodiment of a spray nozzle provided with two nozzle heads fed by a common projection channel.

[0090] [Fig.4b] shows a second example of the embodiment of a spray nozzle provided of two nozzle heads each fed by a respective projection channel.

[0091] [Fig.5a] shows a first example of the embodiment of a distribution conduit carrying two series of spray nozzles arranged two by two.

[0092] [Fig.5b] shows a second example of the embodiment of a distribution conduit carrying two series of spray nozzles offset from each other.

[0093] In these figures, identical elements have the same reference numbers.

[0094] The following embodiments are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment, or that the features apply only to a single embodiment. Single features of different embodiments may also be combined or interchanged to provide other embodiments, without departing from the scope of the invention, as defined by the claims.

[0095] In the description, certain elements may be indexed, for example first element or second element, or for example primary element and secondary element. In this case, it is a simple indexing to differentiate and name close but not identical elements. This indexing does not imply a priority of one element over another and such names can easily be interchanged without departing from the scope of the present invention. This indexing also does not imply an order in time.

[0096] [Fig.l] schematically represents an embodiment of a thermal regulation device 1 which may be intended to equip a vehicle, in particular a motor vehicle.

[0097] The thermal regulation device 1 may be intended to receive one or more electrical and / or electronic components 3 whose temperature must be regulated, for example reduced. The thermal regulation device 1 comprises for this purpose a dielectric fluid circuit 5 described below.

[0098] For example, the thermal regulation device 1 may be intended to receive one or more modules, in particular electrical storage modules, comprising the electronic and / or electrical component(s) 3. In the present invention, a module may be an energy storage cell. Alternatively, a module may comprise several energy storage cells. A module may also be defined as a container or housing comprising one or more electronic and / or electrical components. The module may be closed. It may be a group of cells.

[0099] By way of non-limiting example, the thermal regulation device 1 may be a battery pack comprising a plurality of modules, such as energy storage modules or cells, the temperature of which is regulated by the thermal regulation device 1.

[0100] The thermal regulation device 1 may comprise at least one housing 7 to receive the electrical and / or electronic component(s) 3. For this purpose, the thermal regulation device 1 may comprise a housing 9 at least partially defining the housing(s) 7.

[0101] The components 3 or modules may be intended to be arranged in one row or in several rows within the housing(s) 7 defined by the internal volume of the housing 9. These rows are advantageously arranged parallel to each other.

[0102] The housing 9 may optionally be intended to be closed by a cover (not shown). The housing(s) 7 may be delimited at least by the housing 9 and the possible cover.

[0103] The components 3 or modules respectively have an upper face and an opposing lower face, for example connected by side faces. The upper face may be intended to be arranged opposite the cover (not shown) of the housing 9 receiving the component(s) 3 or module(s). The lower face is intended to be arranged against a bottom of the housing 9. The components 3 or modules may be in the shape of a parallelepiped. The opposing upper and lower faces extend in the direction of the length and width of a component 3 or module. Any other shape may be envisaged for the components 3 or modules. According to another example, they may be of a generally cylindrical shape.

[0104] One or more surfaces of the components 3 or modules may be intended to be watered by the dielectric fluid. These are, for example, upper faces of the components 3 or modules. When the latter are of generally cylindrical shape, a surface to be watered may be a flat or substantially flat end face.

[0105] The thermal regulation device 1 may for example be of generally parallelepiped shape having two opposite upper and lower main faces connected by four lateral faces. The upper face may be defined by the cover and the lower face by a bottom of the housing 9. Alternatively, the thermal regulation device 1 may be of generally cylindrical shape.

[0106] The housing 7 can define a surface to be sprayed with dielectric fluid of generally rectangular or substantially rectangular shape, having two opposite longitudinal edges connected by two lateral edges.

[0107] When the components 3 or modules are received in the housing 7, the surface to be sprayed with dielectric fluid can be defined by the faces, such as the upper faces or end faces, of these components 3 or modules, which are intended to be sprayed when the spray nozzles 13 project dielectric fluid.

[0108] Furthermore, the thermal regulation device 1 may be intended to receive within it one or more additional elements, such as a power supply or battery switching module S, in the case of a battery pack for example.

[0109] Dielectric fluid circuit

[0110] The dielectric fluid circuit 5 comprises at least one dielectric fluid distribution conduit 11 and a predefined number of spray nozzles 13.

[0111] The dielectric fluid circuit 5 may optionally comprise at least one member for circulating the dielectric fluid, such as a pump P. The flow of the dielectric fluid in the circuit 5 may be controlled via this member such as a pump P. A storage tank for the dielectric fluid may also be provided.

[0112] At least one main supply conduit 11' may for example be fluidically connected to the pump P and to several distribution conduits 11 forming secondary conduits, so as to be able to supply them with dielectric fluid. The main supply conduit 11' may extend transversely relative to the distribution conduits 11.

[0113] The main supply conduit 11' can be mechanically and fluidically connected to the distribution conduits 11 by means of respective connecting pieces 10. This can be a clip-on connection for example. The shape of these connecting pieces 10 is designed to reduce the pressure loss. This shape can be adapted according to the configuration of the conduits 11, 11' to be connected. For example, it can be a shape with at least two or three branches that clip onto the respective conduits 11, 11'.

[0114] The dielectric fluid can be single-phase or two-phase. The latter is, for example, chosen according to its phase change temperatures.

[0115] In the case of a two-phase dielectric fluid, when it is sprayed in liquid phase, it tends to evaporate on contact with the components 3 or modules which have for example heated up during their operation. The vapor can subsequently be cooled by a cooling circuit. In the case of a single-phase dielectric fluid, once sprayed in particular in liquid phase, the dielectric fluid can be re-aspirated by the pump P (or another pump) for example and be driven towards a heat exchanger C (or cooler in English) to cool the dielectric fluid before reintroducing this dielectric fluid into the dielectric fluid circuit 5 for the thermal regulation of the components 3 or modules.

[0116] Other components may be integrated into the dielectric fluid circuit 5 or connected to elements of the dielectric fluid circuit 5, such as at least one filter F, at least one valve V, for example a non-return valve, which may be integrated or connected to the main supply conduit 11', one or more heat exchange conduits 12, in particular cooling conduits, making it possible to supply the heat exchanger C, for example.

[0117] At least some elements for cooling the heat exchanger C or the dielectric fluid supplying the spray nozzles 13 can be used for cooling other components of the thermal regulation device 1, for example the power supply or battery switching module S. Such cooling can be achieved by indirect thermal contact, in particular by the circulation of a heat transfer fluid.

[0118] According to a particular example, the heat exchanger C may be intended to be crossed by the dielectric fluid and the heat transfer fluid such as water, possibly coming from an air conditioning system, and circulating through the heat exchange pipes 12. At least one valve may be used to create a bypass and adjust the flow rate of the heat transfer fluid through secondary pipes to cool the power supply or battery switching module S.

[0119] The at least one distribution conduit 11 may extend longitudinally along a main extension direction A. The distribution conduit(s) 11 may be intended to be arranged so as to extend opposite the components 3 or modules, or between components 3 or modules, for example between two rows of components 3 or modules, or even on either side of rows of components 3 or modules.

[0120] The dielectric fluid circuit 5 may comprise several distribution conduits 11, at least some of which may be parallel.

[0121] One or more distribution conduits 11 may extend at least partly parallel to a row of components 3 or modules. Of course, other configurations are conceivable. For example, as a variant or in addition, at least some distribution conduits 11 may extend transversely relative to a row of components 3 or modules.

[0122] One or more distribution conduits 11 may be interposed between the components 3 or modules and the cover of the housing 9.

[0123] The distribution conduits 11 may integrate supports 14, 16, better visible in [Fig.2]. These supports 14, 16 are configured to position and / or fix the distribution conduits 11 on a crosspiece 91 of the housing.

[0124] For example, at the longitudinal end of a distribution conduit 11, a fixing support 14 may have a wall for closing the distribution conduit 11 and a wall shaped for fixing, for example by screwing, on the crosspiece 91 of the housing. This fixing wall may for example be pierced with at least one orifice for the passage of a screw.

[0125] Alternatively or in addition, one or more other supports 16 for positioning a distribution conduit 11 on the crosspiece 91 of the housing, may be arranged along the distribution conduit 11. The positioning may be done for example by clipping.

[0126] In the examples illustrated in Figures 1 to 3, a primary distribution conduit 11 and a secondary distribution conduit 11 are arranged on either side of a housing 7 intended to receive components 3 or modules, for example at least two rows of components 3 or modules. The two distribution conduits 11 may extend in parallel. The two conduits 11 are called primary and secondary for the sake of clarity, without implying priority of one over the other. In the present, the general description of a distribution conduit 11 may apply without distinction to a so-called primary distribution conduit 11 and / or a so-called secondary distribution conduit 11.

[0127] As illustrated in the example of [Fig.3], the surface to be sprayed with dielectric fluid of rectangular shape defined in the housing 7, for example by the upper faces or the end faces of the components 3 or modules, has a width W in a direction transverse to the main direction of extension A of the distribution conduit(s) 11. The general rectangular shape also has a length L extending parallel or substantially parallel to the main direction of extension A of the distribution conduit(s) 11.

[0128] One or more spray nozzles 13 are arranged on one or more of the distribution conduits 11. The number of spray nozzles 13 can be defined as a function of the flow rate of the dielectric fluid, of the length of the dielectric fluid circuit 5.

[0129] Several series of spray nozzles 13 may be provided. Each series comprises one or more spray nozzles 13. The series of spray nozzles 13 may have the same number of spray nozzles 13 or not.

[0130] The at least one distribution conduit 11 may have one or more distribution or connection points for the spray nozzles 13. A single spray nozzle 13 may be connected to a distribution or connection point. Alternatively or additionally, at least two spray nozzles 13 may be connected to a common distribution or connection point.

[0131] One or more spray nozzles 13 may be produced with a distribution conduit 11. Alternatively, the spray nozzles 13 may be separate from the conduit 13 and may be fluidically connected at the distribution or connection points.

[0132] The at least one distribution conduit 11 delimits an internal channel in which the dielectric fluid is intended to circulate so as to be able to fluidly supply the spray nozzle(s) 13.

[0133] A given distribution conduit 11 can fluidically connect several spray nozzles 13. The distribution conduit 11 is shaped to direct the dielectric fluid towards each of the spray nozzles 13.

[0134] The spray nozzles 13 are configured to spray dielectric fluid, and for this purpose comprise one or more spray orifices respectively. At least one additional conduit may be provided for the recovery of the dielectric fluid after projection.

[0135] The spray nozzles 13 are intended to be arranged so as to spray dielectric fluid onto at least one surface of at least one component 3 or module. A surface to be sprayed on a component 3 or module may be an upper surface, i.e. intended to be arranged opposite the cover closing the housing 9.

[0136] One or more spray nozzles 13 arranged on the same distribution conduit 11 are intended to spray at least one common zone Z1, Z2 ([Fig.3]) of the housing 7 of the thermal regulation device 1. The common zone Z1, Z2 is intended to comprise at least one component 3 or module.

[0137] The common zone Z1, Z2 can define a general rectangular shape, as shown diagrammatically in dotted lines, having a width extending transversely to the main direction of extension A of the distribution conduit 11 and a length extending parallel to the main direction of extension A of the distribution conduit 11.

[0138] Several common zones Z1, Z2 can be defined in a housing 7. According to one example, two common zones Z1, Z2 can be arranged face to face in the width direction W, or side by side in the length direction L, for a given housing 7. For the sake of clarity, one of the two common zones facing each other, for example, is called the primary common zone Z1 and the other common zone is called the secondary common zone Z2. In the present document, the general description of a common zone can apply without distinction to a so-called primary common zone Z1 and / or a so-called secondary common zone Z2.

[0139] According to one example, at least one first sprinkler nozzle 13 and one second sprinkler nozzle 13 are arranged on the same distribution conduit 11, and configured to water a corresponding common zone Z1, Z2 of the housing 7, such as a primary common zone Z1 or a secondary common zone Z2. For this purpose, the first sprinkler nozzle 13 comprises at least one first orifice and the second sprinkler nozzle 13 comprises at least one second orifice.

[0140] The first spray nozzle 13 and the second spray nozzle 13 may be arranged side by side on the same distribution conduit 11 along the main extension direction A of the distribution conduit 11. The two spray nozzles 13 may be as close as possible, for example, at a distance less than or equal to 2 mm from each other, or even glued together.

[0141] According to another example, the same spray nozzle 13 arranged on a distribution conduit 11 comprises in particular the first and second projection orifices.

[0142] The first and second spray orifices are configured to spray at least one corresponding common area Z1, Z2 of at least one housing 7, such as a primary common area Z1 or a secondary common area Z2.

[0143] The first projection orifice is arranged and configured so as to project at least a first jet J1 of dielectric fluid onto the common area Zl, Z2 corresponding to a first distance DI from an edge of the housing 7. More precisely, the impact of the first jet J1 of dielectric fluid on the surface to be sprayed takes place at the first distance Dl. This is in particular a longitudinal edge when the surface to be sprayed defines a generally rectangular shape. The first projection orifice may be arranged so that the first jet J1 of dielectric fluid is projected onto the common area Zl, Z2 corresponding to a first width, for example less than or equal to half the width of the common area Zl, Z2.

[0144] The second projection orifice is arranged and configured so as to project at least a second jet J2 of dielectric fluid onto the common area Z1, Z2 at a second distance D2 from the edge of the housing 7. As previously, it is more precisely the impact of the second jet J2 of dielectric fluid on the surface to be sprayed which takes place at the second distance D2. This second distance D2 is further than the first distance D1 from the edge of the housing 7. The second projection orifice can be arranged so that the second jet J2 of dielectric fluid is projected onto the common area Z1, Z2 corresponding to a width less than or equal to the width of the common area Z1, Z2, and greater than half the width of the common area Z1, Z2.

[0145] The second jet J2 of dielectric fluid impacts the common zone Zl, Z2 at a temperature suitable for cooling the components 3 or modules, without having been heated beforehand.

[0146] In addition, the two jets Jl, J2 of dielectric fluid reinforce each other to force the flow of the dielectric fluid over the entire common area Zl, Z2.

[0147] The jets J1, J2 of dielectric fluid may be of general fan shape, falling between two main directions. Alternatively, the jets J1, J2 of dielectric fluid may have other shapes, for example a conical shape.

[0148] According to the particular example with the primary distribution conduit 11 and the secondary distribution conduit 11 on either side of a given housing 7, one or more spray nozzles 13 arranged on the primary distribution conduit 11 make it possible to spray dielectric fluid into at least one corresponding primary common zone Z1 of the housing 7, while one or more other spray nozzles 13 arranged on the secondary distribution conduit 11 make it possible to spray dielectric fluid into at least one corresponding secondary common zone Z2 of this housing 7. The secondary common zone Z2 is distinct from the primary common zone ZL. The two primary common zones Z1 and secondary Z2 can be arranged face to face, here in the direction of the width of the housing 7.

[0149] To do this, at least two spray nozzles 13 can be arranged on the primary distribution conduit 11, and configured to water the primary common area Zl, one of the spray nozzles 13 comprising at least one first orifice and the other spray nozzle 13 comprising at least one second orifice. The two spray orifices configured to water the primary common area Zl are called primary spray orifices. Alternatively, the same spray nozzle 13 arranged on the primary distribution conduit 11 may comprise the two primary orifices as previously described.

[0150] Thus, at least one first primary orifice is arranged and configured so as to project at least one first jet J1 of dielectric fluid onto the primary common zone Zl at a first distance DI from an edge of the housing 7. At least one second primary orifice is arranged and configured so as to project at least one second jet J2 of dielectric fluid onto the primary common zone Zl at a second distance D2 from the edge of the housing 7, the second distance D2 being further away than the first distance DI from the edge of the housing 7.

[0151] In particular, the first primary orifice is arranged and configured so as to project the at least one first jet J1 of dielectric fluid onto the primary common zone Zl, at a first width less than or equal to a quarter of the width 1 / 4 W of the housing 7. Also, the second primary orifice is arranged and configured so as to project the at least one second jet J2 of dielectric fluid onto the primary common zone Zl, at a width less than or equal to half the width of the housing 7, and greater than a quarter of the width 1 / 4 W of the housing 7. This second jet J2 of dielectric fluid is projected closer to the center of the housing 7 between the two primary zones Zl and secondary Z2.

[0152] Similarly, at least two other spray nozzles 13 may be arranged on the secondary distribution conduit 11, and configured to spray the secondary common area Z2, one of the spray nozzles 13 comprising at least one first orifice and the other spray nozzle 13 comprising at least one second orifice. The two spray orifices configured to spray the secondary common area Z2 are called secondary spray orifices. Alternatively, the same spray nozzle 13 arranged on the secondary distribution conduit 11 may comprise the two secondary orifices as previously described.

[0153] Thus, at least one first secondary orifice is arranged and configured so as to project at least one first jet J1 of dielectric fluid onto the secondary common zone Z2 at a first distance DI from an edge of the housing 7. At least one second secondary orifice is arranged and configured so as to project at least one second jet J2 of dielectric fluid onto the secondary common zone Z2 at a second distance D2 from the edge of the housing 7, the second distance D2 being further away than the first distance DI from the edge of the housing 7.

[0154] In particular, the first secondary orifice is arranged and configured so as to project the at least one first jet J1 of dielectric fluid onto the secondary common zone Z2, at a first width less than or equal to a quarter of the width 1 / 4 W of the housing 7. Also, the second secondary orifice is arranged and configured so as to project the at least one second jet J2 of dielectric fluid onto the secondary common zone Z2, at a width less than or equal to half the width of the housing 7, and greater than a quarter of the width 1 / 4 W of the housing 7. This second jet J2 of dielectric fluid is projected closer to the center of the housing 7 between the two zones Z1, Z2.

[0155] The orifices associated with a primary common zone Z1, respectively secondary Z2, are called primary orifice(s) and secondary orifice(s) for the sake of clarity, without implying priority over one another. In the present, the general description of an orifice, in particular of a first orifice, of a second orifice, can be applied without distinction to a first or second orifice called primary and / or to a first or second orifice called secondary.

[0156] Furthermore, the spray nozzles 13 respectively comprise a body 15 which may be directly above an associated distribution conduit 11.

[0157] The body 15 extends mainly along a longitudinal axis B. This is an axis which may be inclined or possibly perpendicular to the main extension direction A of the distribution conduit 11.

[0158] The longitudinal axis B of the body 15 of the spray nozzle 13 is also inclined relative to the general plane described by the surface to be sprayed defined by the housing 7.

[0159] In particular, the longitudinal axis B of the body 15 of the spray nozzle 13 may be inclined or possibly perpendicular to the general plane described by the surface to be sprayed defined by the housing 7. Thus, when the components 3 or modules are received in the housing 7, the body 15 of a spray nozzle 13 may be inclined or extend perpendicularly or substantially perpendicularly to the general plane defined by the upper faces (or the end faces) of all the components 3 or modules.

[0160] When a first spray nozzle 13 and a second spray nozzle 13 are arranged side by side, or even stuck to each other, on the same distribution conduit 11, the respective bodies 15 of the two spray nozzles 13 may extend in parallel. The second spray nozzle 13 may have a body 15 longer than that of the first spray nozzle 13 along the longitudinal axis B.

[0161] At least one projection channel 17, 17A, 17B (figures 4a, 4b) extends within the body 15 of the spray nozzle 13, opening onto at least one orifice. The dielectric fluid coming from a distribution conduit 11 of the dielectric fluid circuit 5 is intended to flow into this projection channel 17, 17A, 17B. It can be a projection channel 17, 17A, 17B extending mainly along the longitudinal axis B.

[0162] The spray nozzles 13 may each comprise one or more nozzle heads 19, 19A, 19B. In the example of [Fig.3], the spray nozzles 13 comprise a respective nozzle head 19. In the example of [Fig.4a] or 4b, a spray nozzle 13 comprises two nozzle heads 19A, 19B. Each nozzle head 19, 19A, 19B comprises at least one orifice into which the corresponding spray channel 17, 17A, 17B opens.

[0163] The nozzle head(s) 19, 19A, 19B are shaped so that the second orifice is above the first orifice along the longitudinal axis B, on the side opposite the associated distribution conduit 11.

[0164] Advantageously, the spray nozzle 13, and in particular the nozzle head 19, 19A, 19B, may be provided with at least one deflector shaped so as to orient the dielectric fluid according to the desired location of the impact of the jet J1, J2 of dielectric fluid on the common zone Z1, Z2 to be sprayed. For example, the deflector may be inclined relative to the longitudinal axis B of the body 15 of the spray nozzle 13.

[0165] When a spray nozzle 13 comprises a single nozzle head 19, the projection channel 17 opens onto the projection orifice of the nozzle head 19.

[0166] When a spray nozzle 13 comprises two nozzle heads 19A, 19B, the first nozzle head 19A comprises the first orifice and the second nozzle head 19B comprises the second orifice.

[0167] According to a first variant embodiment ([Fig.4a]), a common projection channel 17 can open onto each projection orifice, i.e. onto the projection orifice of each nozzle head 19A, 19B. The single common projection channel 17 for the two orifices makes it possible to reduce the pressure loss.

[0168] According to this first variant embodiment ([Fig.4a]) with a common projection channel 17, the second orifice, or the second nozzle head 19B comprising the second orifice, is above the first orifice, or the first nozzle head 19A, along the longitudinal axis B of the body 15 of the spray nozzle 13, and according to the orientation of the elements in [Fig.4a]. The second orifice may in particular be on the side of the free end of the body 15 of the spray nozzle 13.

[0169] According to a second variant ([Fig.4b]), when a spray nozzle 13 comprises the two orifices or the two nozzle heads 19A, 19B, a first projection channel 17A can open onto the first projection orifice, at the level of the first nozzle head 19A, and a second projection channel 17B can open onto the second projection orifice, at the level of the second nozzle head 19B.

[0170] Considering a spray nozzle 13 according to one or other of the variants, shown in FIGS. 4a, 4b, the first nozzle head 19A, in particular a wall of the latter can be inclined relative to the longitudinal axis B of the body 15 of the spray nozzle 13. The inclination can be at a first angle of inclination a.

[0171] The second nozzle head 19B of the same spray nozzle 13, in particular a wall of this second nozzle head 19B, may also be inclined relative to the longitudinal axis B of the body 15 of the spray nozzle 13. The inclination may be at a second angle of inclination [3, distinct from the first angle of inclination a. The second angle of inclination [3 may in particular be greater than the first angle of inclination a.

[0172] For example, in a non-limiting manner, the angles of inclination a, [3 may be between 105° and 170° relative to the longitudinal axis B of the spray nozzle 13.

[0173] Furthermore, referring again to [Fig.3], at least two series S1, S2 of spray nozzles 13 can be arranged on the same associated distribution conduit 11.

[0174] The spray nozzles 13 of the two series SI, S2 may or may not be similar.

[0175] The series SI, S2 of spray nozzles 13 can be associated with housings 7 respective of the thermal regulation device 1. In other words, a first series S1 of spray nozzles 13 may be intended to spray dielectric fluid onto the components 3 or modules when they are received in a first housing 7, while a second series S2 of spray nozzles 13 may be intended to spray dielectric fluid onto the components 3 or modules when they are received in a second housing 7. This is a second housing 7 separate from the first housing 7.

[0176] The distribution conduit 11 may be arranged so as to extend between the first housing 7 and the second housing 7. The distribution conduit 11 may optionally be arranged opposite a space between the two housings 7. Alternatively, the two housings 7 may be juxtaposed.

[0177] The spray nozzles 13 of the first series S1 can be oriented so as to project the jets J1, J2 of dielectric fluid in a first direction and the spray nozzles 13 of the second series S2 can be oriented so as to project the jets J1, J2 of dielectric fluid in a second direction opposite to the first direction.

[0178] At least some spray nozzles 13 of the first series S1 can be connected, for example by a material bridge 21, to spray nozzles 13 of the second series S2.

[0179] The spray nozzles 13 of the two series S1, S2 can be arranged back to back, opposite each other on the associated distribution conduit 11, as shown diagrammatically in Figures 3 and 5a.

[0180] The spray nozzles 13 of the two series S1, S2 are in this example arranged symmetrically with respect to the main extension direction A of the conduit 11 of distribution.

[0181] In particular, when in each series S1, S2, at least some spray nozzles 13 are arranged close together or even stuck together two by two, as previously described, the pairs of spray nozzles 13 of the two series S1, S2 are arranged back to back. For each pair, the longer spray nozzles 13 along the longitudinal axis B may be back to back, while the shorter spray nozzles 13 along the longitudinal axis B may be back to back.

[0182] Alternatively, the spray nozzles 13 of the two series SI, S2 could not be arranged symmetrically with respect to the main extension direction A of the distribution conduit 11 carrying the two series SI, S2 of spray nozzles 13.

[0183] According to another example shown schematically in [Fig.5b], the spray nozzles 13 of the two series SI, S2 are arranged in an offset manner along the main extension direction A of the distribution conduit 11 carrying the two series SI, S2 of spray nozzles 13. The spray nozzles 13 of the first series SI and of the second series S2 may, for example, be arranged in a staggered manner.

[0184] Thus, the dielectric fluid circuit 5 provides a system of spray nozzles 13 for projecting the two jets J1, J2 of dielectric fluid onto the common areas Z1, Z2 defined by the surfaces to be sprayed of the components 3 or modules. The pairs of spray nozzles 13 side by side or the spray nozzles 13 with the two orifices make it possible to use fewer spray nozzles 13 to ensure good distribution of the dielectric fluid over the common areas Z1, Z2.

[0185] The two jets Jl, J2 of dielectric fluid impact the components 3 or modules at different locations with a good temperature to ensure cooling.

[0186] In addition, the two jets J1, J2 of dielectric fluid jointly make it possible to circulate the dielectric fluid over the entire common area Z1, Z2. Indeed, the two jets J1, J2 of dielectric fluid which impact the common area Z1, Z2 at different distances, interact, reinforce each other, avoiding possible dead zones which would not be sprayed with dielectric fluid.

[0187] This configuration allows for homogeneous spraying of the dielectric fluid on the components 3 or modules, in particular on their upper faces, which allows the sprayed dielectric fluid to better reach the center and the spaces between the components 3 or modules for example. This contributes to thermal regulation, in particular cooling, of the components 3 or modules, more homogeneous than in the solutions of the prior art by limiting the number of spray nozzles 13 required.

Claims

Claims

1. Dielectric fluid circuit (5) for a thermal regulation device, in particular for a motor vehicle, configured to receive a predefined number of electronic and / or electrical components (3) to be thermally regulated, the dielectric fluid circuit (5) comprising at least one dielectric fluid distribution conduit (11) and a predefined number of spray nozzles (13) arranged on the at least one associated distribution conduit (11) and configured to spray dielectric fluid, through at least one projection orifice, characterized in that: - at least two projection orifices, of a spray nozzle (13) or of at least two spray nozzles (13) arranged on the same distribution conduit (11), are configured to spray at least one common zone (Zl, Z2) of at least one housing (7) of said device, the common zone (Zl, Z2) being intended to comprise at least one electronic and / or electrical component (3) electric,such that: • at least one first orifice is arranged and configured so as to project at least one first jet (Jl) of dielectric fluid onto the common area (Zl, Z2) at a first distance (Dl) from an edge of the housing (7), and • at least one second orifice is arranged and configured so as to project at least one second jet (J2) of dielectric fluid onto the common area (Zl, Z2) at a second distance (D2) from the edge of the housing (7), the second distance (D2) being further than the first distance (Dl) from the edge of the housing (7).,

2. Dielectric fluid circuit (5) according to the preceding claim, comprising: - at least one primary conduit (11) and one secondary conduit (11) for distributing dielectric fluid configured to be arranged on either side of the housing (7), at least one spray nozzle (13) being arranged on each conduit (11) of distribution, and in which at least two primary spray orifices, of a spray nozzle (13) or at least two spray nozzles (13) arranged on the primary distribution conduit (11), are configured to spray dielectric fluid onto a corresponding primary common area (Zl) of the housing (7), of which at least one first primary orifice is arranged and configured to spray at least one first jet (J1) of dielectric fluid onto the primary common area (Zl) at a first distance (Dl) from an edge of the housing (7), and at least one second primary orifice is arranged and configured to spray at least one second jet (J2) of dielectric fluid onto the primary common area (Zl) at a second distance (D2) from the edge of the housing (7), the second distance (D2) being further away than the first distance (Dl) from the edge of the housing (7), and at least two secondary spray orifices, of another spray nozzle (13) or of at least two other spray nozzles (13) arranged on the secondary distribution conduit (11), are configured to spray dielectric fluid onto a corresponding secondary common area (Z2) of the housing (7), said secondary common area (Z2) being distinct from said primary common area (Z1), and of which at least one first secondary orifice is arranged and configured so as to spray at least one first jet (J1) of dielectric fluid onto the secondary common area (Z2) at a first distance (D1) from an edge of the housing (7), and at least one second secondary orifice is arranged and configured so as to spray at least one second jet (J2) of dielectric fluid onto the secondary common area (Z2) at a second distance (D2) from the edge of the housing (7), the second distance (D2) being further away than the first distance (D1) from the edge of the housing (7).

3. Dielectric fluid circuit (5) according to the preceding claim, in which the housing (7) is configured to define a surface to be sprayed with dielectric fluid of generally rectangular shape having a width (W) in a direction transverse to the main extension direction (A) of the distribution conduit (11), and in which for each primary (Zl), respectively secondary (Z2) common zone: - the at least one first primary, respectively secondary, orifice is arranged and configured so as to project at least one first jet (Jl) of dielectric fluid onto the corresponding primary (Zl), respectively secondary (Z2) common zone, at a first width less than or equal to a quarter of the width (1 / 4W) of the housing (7), and - the at least one second primary, respectively secondary, orifice is arranged and configured so as to project at least one second jet (J2) of dielectric fluid onto the corresponding primary (Zl), respectively secondary (Z2) common zone, at a width less than or equal to half the width of the housing (7).

4. Dielectric fluid circuit (5) according to one of claims 1 to 3, in which at least one first spray nozzle (13) comprising said first orifice and at least one second spray nozzle (13) comprising said second orifice are arranged side by side on the same distribution conduit (11) in a main extension direction (A) of the distribution conduit (11), at a distance less than or equal to 2 mm from each other.

5. Dielectric fluid circuit (5) according to the preceding claim, in which the spray nozzles (13) respectively comprise a body (15) extending mainly along a longitudinal axis (B), the second spray nozzle (13) having a body (15) longer than the first nozzle (13).

6. Dielectric fluid circuit (5) according to one of claims 1 to 3, wherein at least one spray nozzle (13) arranged on the associated distribution conduit (11) comprises a body (15) extending mainly along a longitudinal axis (B), the body (15) of said nozzle (13) comprising said first orifice and said second orifice, said second orifice being located above said first orifice along the longitudinal axis (B) of the body (15) of said nozzle (13), on the side opposite the associated distribution conduit (11).

7. A dielectric fluid circuit (5) according to claim 6, wherein the spray nozzle (13) comprises a projection channel (17) extending within the body (15) of the spray nozzle (13) and intended to be crossed by the dielectric fluid, the projection channel (17) opening onto said first orifice and onto said second orifice.

8. Dielectric fluid circuit (5) according to claim 6, wherein the spray nozzle (13) comprises: - a first projection channel (17A) within which the dielectric fluid is intended to flow, extending within the body (15) of the spray nozzle (13) and opening onto said first orifice and - a second projection channel (17B), distinct from the first projection channel (17A), within which the dielectric fluid is intended to flow, extending within the body (15) of the spray nozzle (13) and opening onto said second orifice.

9. Dielectric fluid circuit (5) according to one of claims 7 or 8, wherein the spray nozzle (13) comprises at least a first nozzle head (19A) comprising said first orifice and a second nozzle head (19B) comprising said second orifice, the first nozzle head (19A) being inclined at a first angle of inclination (a) relative to the longitudinal axis (B) of the body (15) of said nozzle (13), and the second nozzle head (19B) being inclined at a second angle of inclination (|3), distinct from the first angle of inclination (a), relative to the longitudinal axis (B) of the body (15) of said nozzle (13).

10. Dielectric fluid circuit (5) according to one of the preceding claims, wherein: - at least two series (S1, S2) of spray nozzles (13) are arranged on the same associated distribution conduit (11), so that - the spray nozzles (13) of one series (S1) are oriented so as to spray dielectric fluid onto a first housing (7) of said device (1) configured to receive a predefined number of electronic and / or electrical components (3), and - the spray nozzles (13) of another series (S2) are oriented so as to spray dielectric fluid onto a second housing (7) of said device (1) configured to receive other electronic and / or electrical components (3).

11. Thermal regulation device (1), in particular for a motor vehicle, comprising at least one housing (7) configured to receive a predefined number of electronic and / or electrical components (3) to be thermally regulated, and a dielectric fluid circuit (5) comprising at least one dielectric fluid distribution conduit (11) and a predefined number of spray nozzles (13) arranged on the at least one associated distribution conduit (11) and configured to spray dielectric fluid, through at least one spray orifice, characterized in that: - at least two projection orifices, of a spray nozzle (13) or of at least two spray nozzles (13) arranged on the same distribution conduit, are configured to spray at least one common zone (Zl, Z2) of the at least one housing (7) of said device (1), the common zone (Zl, Z2) being intended to comprise at least one electronic and / or electrical component (3), such as: - at least one first orifice is arranged and configured so as to project at least one first jet (Jl) of dielectric fluid onto the common area (Zl, Z2) at a first distance (Dl) from an edge of the housing (7), and - at least one second orifice is arranged and configured so as to project at least one second jet (J2) of dielectric fluid onto the common area (Zl, Z2) at a second distance (D2) from the edge of the housing, the second distance being further than the first distance (Dl) from the edge of the housing (7).

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