Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K5/00—Casings; Enclosures; Supports
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K5/00—Casings; Enclosures; Supports
  • H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/00457—Ventilation unit, e.g. combined with a radiator
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/00457—Ventilation unit, e.g. combined with a radiator
  • B60H1/00471—The ventilator being of the radial type, i.e. with radial expulsion of the air
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
  • B60H1/00514—Details of air conditioning housings
  • B60H1/00521—Mounting or fastening of components in housings, e.g. heat exchangers, fans, electronic regulators
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D25/00—Pumping installations or systems
  • F04D25/02—Units comprising pumps and their driving means
  • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D25/00—Pumping installations or systems
  • F04D25/02—Units comprising pumps and their driving means
  • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D29/00—Details, component parts, or accessories
  • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
  • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
  • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
  • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
  • B60H2001/006—Noise reduction
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
  • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

• the present invention relates to the field of heating, ventilation and / or air conditioning devices for motor vehicles.
• the invention relates more particularly to an electric motor support for such a device.
• a heating, ventilation and / or air conditioning device which makes it possible to generate an air flow.
• a device also makes it possible to manage the temperature and the distribution within the passenger compartment of the vehicles of the air flow created.
• a heating, ventilation and / or air conditioning device comprises, among other things, a fan comprising a fan wheel driven in rotation by an electric motor.
• the electric motor is in particular electronically commutated, driven by a power supply module.
• An electronically commutated electric motor or brushless direct current motor (also known by the English name of "brushless"), comprises a rotor and stator assembly, each of these components carrying electromagnetic elements including the interaction generates the displacement of the rotor relative to the stator, and further the displacement of the fan wheel.
• the electric motor is assembled in the heating, ventilation and / or vibration device via a motor support which comprises an inner ring configured to accommodate the stator of the electric motor and an outer ring suitable for being fixed directly or indirectly to a structural element of the vehicle.
• a decoupling element is interposed between the inner ring and the outer ring.
• This decoupling element aims to limit, or even prevent, the transmission of vibrations and / or stresses generated by the rotation of the electric motor, from the inner ring, to the outer ring. This reduces the transmission of vibrations to the heating, ventilation and / or air conditioning device, which could be felt by the occupants of the vehicle.
• the decoupling element allows relative movement of the inner ring relative to the outer ring, in particular in a plane normal to an axis common to the two rings. In the absence of the decoupling element, vibrations can propagate in the interior of the vehicle and affect the comfort of the occupants.
• the decoupling element must also withstand the mechanical stresses resulting from the movements of one ring relative to the other.
• the object of the present invention is to provide an engine support, in particular for a heating, ventilation and / or air conditioning device of a motor vehicle, which is simple to produce and which does not have at least some of the drawbacks known engine mounts.
• the invention relates to an engine support, in particular for a motor-fan unit of a vehicle ventilation system, comprising:
• two coaxial rings including an inner ring suitable for receiving one or more engine elements and an outer ring suitable for being fixed to a housing forming a structural element,
• means for limiting the relative displacement of one of the two rings with respect to the other, in a plane normal to the common axis of the two rings, comprising at least one radial stop fixed to one of the two rings, with a radial play between the stop and the other of the two rings.
• the radial stop makes it possible to limit the relative displacement of one of the two rings with respect to the other, in the median plane of the engine support, normal to the axis common to the two rings. Maintaining a radial clearance between the radial stop and one of the rings further allows the decoupling element to perform its function satisfactorily.
• the motor support comprises one or more of the following characteristics, taken alone or in combination:
• the at least one radial stop extends between the inner ring and the outer ring, the at least one radial stop preferably having an inner curvature complementary to the curvature of the inner ring and / or an outer curvature complementary to the curvature of the outer ring;
• the engine support comprises at least two radial stops opposite relative to the center of the rings, preferably at least three radial stops regularly distributed angularly around the common axis of the two rings;
• the engine support also includes:
• an element for limiting the tilting of the inner ring relative to the outer ring comprising a finger which projects from a first of the two rings and is housed in a housing formed in the second of the two rings, two axial stops being formed in the housing to limit the movement of the finger in the housing in the direction of the common axis of the two rings;
• the motor support comprises a means for limiting the relative rotation of the rings and a tilting limiting element, in which the means for limiting, preferably preventing, the relative rotation of the rings around the common axis of the two rings, comprises two orthoradial stops in the housing, limiting, preferably preventing, the orthoradial movement of the finger in the housing;
• one of the axial stops is formed by a lug extending inside the housing, from a base of a pin attached to the second of the two rings;
• the pin also forms the two orthoradial stops, the two orthoradial stops preferably extending on either side of the axial stop, the two orthoradial stops and the axial stop forming a relief in the form of "U" from the base of the pawn;
• the base of the pin has a hole in line with the pin, the base of the pin having a substantially constant width in the vicinity of the hole and / or ribs in the vicinity of the hole, the ribs preferably extending radially from the hole towards an edge of the base;
• the at least one radial stop is formed by the pin, the pin preferably forming two radial stops arranged on either side of the housing, in an orthoradial direction;
• the at least one radial stop is fixed to the outer ring
• the inner ring and / or the outer ring is covered with an elastomeric material, at least opposite the at least one radial stop;
• the decoupling element comprises a ring made of elastomeric material, molded between the inner ring and the outer ring;
• the ring of elastomeric material covers the inner ring and / or the outer ring at least opposite the at least one radial stop;
• - Elastomeric material is placed between the finger and each of the two axial stops and in contact with the finger and one of the two axial stops, the elastomeric material preferably being compressed between the finger and each of the two axial stops, the elastomeric material having more preferably a compression ratio greater than or equal to 5% and / or less than or equal to 25%, more preferably still substantially equal to 15%;
• the motor support comprises the same thickness of elastomer between the finger and each of the two axial stops;
• the at least one axial stop extends in a direction substantially perpendicular to the direction of elongation of the finger
• the motor support comprises two axial stops projecting in the housing, arranged on either side of the finger, the two projecting axial stops facing each other;
• the elastomeric material is overmolded on two opposite faces of the finger
• the elastomeric material has a hardness of between 40 and 60 shore;
• the elastomeric material in contact between the finger and each of the two stops, is integral with the ring of elastomeric material
• the finger has a cross section in H;
• a fan in particular for a ventilation installation for a vehicle, comprising an electric motor, in particular a brushless electric motor, a fan wheel, driven in rotation by the electric motor, and a motor support as described above in all its combinations, the motor, in particular the stator of the motor, being fixed to the inner ring of the motor support.
• Figure 1 is a schematic side view of an example of a fan device for a heating, ventilation and / or air conditioning device for a motor vehicle.
• Figure 2 is a schematic perspective view of an assembly formed by the motor support and a housing of the fan device of Figure 1.
• Figure 3 is a schematic perspective view of a sub-assembly of the motor support of Figure 2.
• Figure 4 is a schematic side view of a detail of the sub-assembly of Figure 3.
• Figure 5 is a schematic perspective view of an example of a pin implemented in the engine support of Figures 2 and 3;
• FIG. 6 is a schematic view from below of the pin of FIG. 5.
• Figure 7 is a schematic perspective view of a second example of a pin implemented in the engine support of Figures 2 and 3.
• FIG. 8 is a diagrammatic perspective view of a third example of a pin implemented in the engine support of FIGS. 2 and 3. detailed description
• FIG 1 schematically illustrates a side view of a fan device 10 for a heating, ventilation and / or air conditioning device for a motor vehicle.
• a heating, ventilation and / or air conditioning device for a motor vehicle comprises an aeration circuit, a fan device 10 to set the air in motion in the aeration circuit, and means for heating and / or means for cooling the flow of air set in motion by the fan device 10.
• the fan device 10 essentially comprises a fan wheel 12 and an electric motor, masked here by a motor cover 14, for rotating around its axis A, the fan wheel 12
• the electric motor is for example a brushless motor.
• the fan device 10 further comprises a motor support 16 for assembling the electric motor on a support.
• the electric motor is connected to a deflector 18 of the motor support 16, the deflector 18 forming part of the air circuit of the heating, ventilation and / or air conditioning system.
• the motor support 16 essentially comprises an inner ring 20, an outer ring 22 and a decoupling element 24 interposed between the inner ring 20 and the outer ring 22.
• the decoupling element 24 aims limiting the transmission of vibrations from one of the two rings 20, 22 to the other of the two rings 20, 22.
• the decoupling element 24 is here formed by a ring of elastomeric material.
• the elastomeric material is SEBS (polystyrene-b-poly (ethylene-butylene) -b-polystyrene).
• SEBS polystyrene-b-poly (ethylene-butylene) -b-polystyrene
• the decoupling ring 24 is for example molded onto the inner 20 and outer 22 rings. The decoupling ring 24 thus secures the inner 20 and outer 22 rings.
• the inner 20, outer 22 and decoupling 24 rings are coaxial, with an axis common axis of rotation A of fan wheel 12.
• the assembly formed by the inner rings 20, outer 22 and decoupling 24, is received in a cavity of the deflector 18.
• the inner ring 20 is made integral with the stator (here not visible) of the motor.
• the outer ring 22 is here fixed to the deflector 18.
• a layer of elastomeric material may be interposed between the outer ring 22 and the deflector 18.
• the inner ring 20 has a plurality of fingers 26.
• the fingers 26 extend radially outwards from the outer surface of the inner ring 20.
• each finger 26 has an H section, comprising two substantially planar surfaces 26i, 262 interconnected by a core 263.
• the planar surfaces 26i, 262 are here normal to the direction of the axis A common to the rings 20, 22, 24.
• Each flat surface 26i, 262 is here covered with a layer 27i, 272 of elastomeric material.
• the inner ring 20 has three fingers 26.
• the fingers 26 are preferably regularly distributed angularly around the axis A of the inner ring 20.
• the outer ring 22 for its part comprises a plurality of housings 28.
• Each housing 28 is adapted to receive a respective finger 26.
• the housings 28 thus open out at least on the radially internal surface of the outer ring 22.
• the housings 28 are through, opening on the radially internal surface of the outer ring 22 and on the radially outer surface of the ring outer 22.
• the housings 28 are preferably regularly distributed angularly around the axis A of the outer ring 22.
• tilting is meant here any movement of one of the rings 20, 22 relative to the other 20, 22, outside the common median plane of the rings 20, 22, normal to the direction of the axis A common to the two rings 20, 22.
• the housings 28 have dimensions such that a clearance exists between the walls of each housing 28 and the finger 26 which is received there (cf. in particular FIG. 2). In particular, a clearance exists in the orthoradial direction.
• the walls of each housing 28 may be covered with elastomeric material.
• the elastomer layer 30 which covers the walls of each housing 28 is integral with the decoupling ring 24.
• each housing 28 the finger 26 cooperates with two axial stops 32, 34 to further limit the axial movement of the finger 26 in the housing 28.
• the two axial stops 32, 34 protrude from the walls of the housing 28.
• axial stop is meant here a stop limiting the movement in the direction of the common axis A of the rings 20, 22, 24.
• a clearance is maintained between the elastomeric material of a layer 27i, 272 covering one of the flat surfaces 26i, 262 of the finger 26 and the axial stops 32, 34.
• the layers 27i, 272 of elastomeric material may be in contact with, or even compressed between, the flat surfaces 26i, 262 of the finger and the axial stops 32, 34. This limits the possible movement of the finger 26 in the housing 28, in the axial direction.
• the elastomeric material of the layers 27i, 272 present between the axial stops 32, 34 and the flat surfaces 26i, 262 has a compression ratio, axial, greater than or equal to 5% and / or less than or equal to 25 %, preferably substantially equal to 15%.
• axial compression ratio is the ratio between:
• the elastomeric material forming the layers 27i, 272 can be chosen according to its hardness. This elastomeric material may in particular have a hardness greater than or equal to 40 shore and / or less than or equal to 60 shore.
• the elastomeric material of the layers 27i, 272 can advantageously be overmolded on the surfaces 26i, 262 of the fingers 26, in particular concomitantly with the overmolding of the decoupling ring 24. The elastomeric material is thus maintained in position relative to the fingers 26 The mounting of the inner ring 20 relative to the outer ring 22 is also facilitated.
• the first axial stop is here formed by a pin 32 of a pin 36.
• the pin 36 also comprises a base 38, substantially planar, from which the pin 32 extends along an axis B intended to be parallel to the common axis A of the rings 20, 22, 24, when the pin 36 is fixed on the outer ring 22.
• the base 38 has here two openings 40 intended to be mounted tight on two complementary cylindrical reliefs, formed on the outer ring 22.
• two notches 42 are provided at the longitudinal ends of the base 38.
• One of the two notches 42 receives a complementary rib formed by the outer ring 22, to guide the mounting of the pin 36 on the outer ring 22
• the lug 32 is mounted in a hole in the outer ring 22, so as to protrude into a housing 28 and thus form the first axial stop 32. More precisely, the lug 32 extends in the direction of the. common axis A of the rings 20, 22, 24, from one e from the walls of the housing 28, towards the finger 26 which is received there.
• the second axial stop 34 is here formed by the deflector 18 which has projecting cylindrical reliefs, passing through an opening in the outer ring 22, so as to protrude into the housings 28, from a wall opposite the first axial stop 32.
• the projecting cylinders also extend in a direction parallel to the direction of the axis A common to the rings 20, 22, 24.
• each pin 36 here has two reliefs 44, symmetrical with respect to a median plane of the pin 36, comprising the axis B.
• Each relief 44 is intended to extend, from the base 38, substantially in a radial direction, with respect to the common axis A of the rings 20, 22, 24, when the pin 36 is fixed on the outer ring 22.
• each relief 44 is received in a recess formed by the decoupling ring 24, between the inner 20 and outer 22 rings.
• Each relief 44 fixed on the outer ring 22, here forms a radial stop for the movement of the inner ring 20, relative to the outer ring 22.
• the reliefs 44 limit the relative movements of the inner ring 20 relative to the outer ring 22, in a radial direction.
• This limitation of the amplitude of the displacement of the inner ring 20 relative to the outer ring 22 makes it possible to avoid damaging the decoupling element 24, for example during shocks to which the fan 10 is subjected. These shocks may for example come from irregularities in the terrain on which the vehicle is used.
• Each relief 44 has a substantially cylindrical shape with an axis parallel to the axis B of the lug of the pin 32, the cross section of each relief 44 here having substantially the shape of a parallelogram.
• the inner front surface 44a of each relief 44 intended to be oriented in a substantially radial direction when the pin 36 is fixed to the outer ring 22, is curved, in this case is concave.
• the curvature of the front surface 44a is advantageously complementary to the outer curvature of the inner ring 20, possibly covered with polymer material of the decoupling ring 24.
• a substantially constant radial clearance is maintained between the entire front surface 44a of the interior of the relief.
• This radial clearance is for example equal to 1 mm. Maintaining radial play between the stops 44 and the inner ring 20 allows satisfactory decoupling by the decoupling ring. In other words, decoupling is provided for movements of small amplitude, and the radial stops ensure the reliability of the decoupling element 24 during heavy loads.
• each relief 44 intended to be oriented in a substantially radial direction, towards the outer ring 22, when the pin 36 is fixed on the outer ring 22, is curved, in this case is concave .
• the curvature of the outer front surface 44b is advantageously complementary to the inner curvature of the outer ring 22, possibly covered with polymer material of the decoupling ring 24.
• the outer ring 22 has a local convexity. The curvature of the outer front surface 44b makes it easier to position and improve the retention in position of each pin 36, fixed to the outer ring 22.
• the motor support 16 here comprises a means for limiting, preferably preventing, the relative rotation of the inner and outer rings 20, 22.
• This means here takes the form of orthoradial stops 46 in at least one housing 28, preferably in each housing 28.
• the orthoradial stops 46 are adapted to cooperate with a finger 26 received in the housing 28.
• each pin 36 has, in the example illustrated, a pair of protruding reliefs 46 (or teeth 46) extending from side to side. the other of the lug 32 forming an axial stop, in the direction of the extension axis B of the lug 32.
• the lug 32 and the teeth 46 thus form a relief in the shape of a "U" from the base of pawn 36.
• the base 38 thereof may have a blind hole 48, in line with the lug 32. This limits the amount of plastic material to be molded at this lug. For the same reason, the base 38 may have a reduced width at the level of this hole 48 with respect to its ends.
• Figures 7 and 8 illustrate variants of the pin 36 of Figures 5 and 6.
• the base 38 of the pins 36 of the Figures 7 and 8 show reinforcing ribs 50, in the vicinity of the hole 48, or even through the hole 48 (see Figure 7).
• These ribs 50 can extend radially from the edge of the hole 48, for example to a rim 52 of the base 38.
• the base 38 of the examples of pins 36 of FIGS. 7 and 8 has a substantially constant width, in particular in the vicinity of the hole 48.
• the bases 38 of these two examples are thus substantially rectangular with rounded ends.
• the present disclosure is not limited to the examples described above, but it encompasses all the variants and combinations that a person skilled in the art may envisage in the context of the protection sought.
• a single axial stop protrudes in the housing 28.
• the finger received in the housing can be clamped between the projecting axial stop, on the one hand, and the wall of the housing opposite to the projecting axial stop, on the other hand.
• the axial stops can be produced by means other than those described in the example above.
• one and / or the other of the axial stops may / may be produced by a boss in the wall of the housing, extending towards the finger received in the housing.
• elastomeric material is present on the faces of the fingers facing the axial stops.
• elastomeric material can be provided on the axial stops, whether they are protruding or not.
• contact between two layers of elastomeric material is avoided.
• only one of the two contacting surfaces is preferably covered with elastomeric material.
• the inner ring forms fingers received in housings formed in the outer ring.
• the reverse configuration can however be envisaged, according to which the outer ring has fingers oriented radially towards the inner ring and received in housings formed in this inner ring.
• the orthoradial stops and / or the radial stops can also take other forms than those described here.
• the radial stop is fixed to one of the two inner and outer rings and extends between these two inner and outer rings, with radial play.
• the orthoradial stops can for example take the form of a boss of a wall of the housing receiving a finger.
• the Engine support may in particular comprise two radial stops opposite relative to the center of the inner and outer rings, or three or more radial stops, preferably regularly distributed around the common axis of the inner and outer rings.

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)
• Motor Or Generator Frames (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=67810953

Family Applications (1)

Country Status (5)

Family Cites Families (11)

• 2019
  • 2019-06-28 FR FR1907101A patent/FR3098054B1/fr active Active
• 2020
  • 2020-06-22 EP EP20747450.3A patent/EP3991278A1/de active Pending
  • 2020-06-22 CN CN202080040655.5A patent/CN113906658A/zh active Pending
  • 2020-06-22 WO PCT/FR2020/051082 patent/WO2020260815A1/fr active Application Filing
  • 2020-06-22 US US17/623,519 patent/US20220360135A1/en active Pending

Also Published As

Similar Documents

Legal Events