EP3167193A1 - Plaque d'un compresseur électrique et compresseur électrique comprenant une telle plaque - Google Patents
Plaque d'un compresseur électrique et compresseur électrique comprenant une telle plaqueInfo
- Publication number
- EP3167193A1 EP3167193A1 EP15756986.4A EP15756986A EP3167193A1 EP 3167193 A1 EP3167193 A1 EP 3167193A1 EP 15756986 A EP15756986 A EP 15756986A EP 3167193 A1 EP3167193 A1 EP 3167193A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- electric
- wall
- electric motor
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
- F04C29/047—Cooling of electronic devices installed inside the pump housing, e.g. inverters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/80—Other components
- F04C2240/808—Electronic circuits (e.g. inverters) installed inside the machine
Definitions
- Plate of an electric compressor and electric compressor comprising such a plate
- the invention relates to a plate of an electric refrigerant compressor and said electric compressor comprising the plate. It will find in particular its applications in a refrigerant circuit fitted to a motor vehicle.
- the refrigerant fluid is conventionally circulated inside an air conditioning circuit via a compressor.
- this compressor is mechanical type because its rotation is driven by means of a pulley connected to the internal combustion engine by a belt.
- hybrid vehicles that is to say with an internal combustion engine coupled to an electric motor, or all electric, that is to say exclusively powered by an electric motor, is constantly increasing by the fact of rarefaction of fossil fuels that fuel vehicles equipped with internal combustion engines.
- the mechanical energy usually supplied by the internal combustion engine is therefore less available or completely unavailable for the case of all-electric vehicles.
- the preferred solution for driving a compressor in a hybrid vehicle or electric is by feeding an electric motor driving the compressor rather than a belt output of the electric machine.
- Such electric compressors comprise a compression mechanism driven by the electric motor, and a control device of the electric motor.
- the control device is located in a separate compartment of the electric motor by at least one partition wall on which is mounted the control device.
- the engine is located in another compartment.
- control device Due to the electrical components of the control device, the latter can generate a large amount of heat in operation. It is then necessary to cool it.
- the invention aims to improve the situation and thus concerns a plate of an electric refrigerant compressor, intended to separate an electric motor from the electric compressor of an electric control device of said electric motor, said plate comprising a bottom wall and means for receiving an engine transmission shaft originating from said bottom wall of the plate, characterized in that said plate defines a circulation channel of said refrigerant fluid for guiding the refrigerant on less than one turn around the receiving means and in one direction.
- the plate and in particular its circulation channel is arranged to guide the refrigerant fluid so as to ensure good cooling of the plate while limiting the fluid pressure losses.
- the plate defines a refrigerant circulation channel for guiding the refrigerant over less than one turn around the receiving means and in a single direction to a zone to be cooled.
- the plate comprises bosses extending transversely to the bottom wall and intended to receive means for fixing the plate to a box configured to receive said electric motor, said bosses being interconnected by a wall defining an edge; said circulation channel;
- the bosses extend perpendicularly to the bottom wall
- said wall remains concave between said bosses
- said wall is in an arc of a circle between said bosses;
- the plate comprises three bosses interconnected by said wall;
- said wall is formed in continuity of material from the remainder of said plate
- said plate comprises a partition intended to guide the fluid towards said channel when it comes into contact with the plate;
- said partition is formed in continuity of material from the remainder of said plate;
- the depth of the channel increases according to the direction of flow of the fluid in the channel
- said partition limits the passage of the refrigerant by forcing it to pass through the inlet of said channel
- the invention also relates to an electric compressor comprising a plate as defined above.
- the housing comprises an opening through which the fluid enters the housing at an inlet manifold.
- FIG. 1 is a view of a compressor comprising a plate according to the invention, illustrated according to a diametral cutting plane.
- FIG. 1 is an elevational view of the plate of Figure 1.
- FIG. 1 illustrates an electric compressor 9 comprising a plate 4 according to the invention.
- the compressor 9 is an electric compressor in that it incorporates an electric motor 2 which drives a compression mechanism 3.
- the electric motor 2 comprises an integrally circular periphery stator 2A and a rotor 2B integral with a transmission shaft 21 of the motor extending longitudinally along an axis H as shown in FIG. which turns to drive the compressor.
- the plate 4 comprises a receiving means 13 of the transmission shaft 21 of the engine originating from a bottom wall 5 of the plate 4.
- Said receiving means 13 here comprises a bearing-shaped housing which can accommodate a roller bearing. balls or equivalent.
- the compression mechanism 3 comprises fixed parts and moving parts, the latter being set in rotation by the shaft 21 of the electric motor 2.
- the compression mechanism 3 is of the spiral compression type (Scroll in English) or of the type vane or piston type, these examples being given for illustrative purposes without limiting the scope of the invention.
- the compressor 9 further comprises a control device 1 of the electric motor 2.
- This control device 1 is notably an inverter (inverter in English) transforming a direct current coming from an on-board network of the vehicle into a sinusoidal current supplying the power supply. electric motor 2.
- the compressor 9 is delimited vis-à-vis its external environment by at least one housing 7 defining a cavity 17 accommodating said electric motor 2.
- This housing 7 is, for example, a piece of aluminum or aluminum alloy, of hollow circular shape comprising a peripheral envelope which delimits an internal volume.
- This housing 7 comprises at least one engine compartment 20 corresponding to said cavity 17 and in which is mounted the electric motor.
- the housing 7 also comprises at least one control compartment 10 in which the control device 1 is mounted. These compartments are separate volumes separated from each other by said plate 4.
- the plate 4 thus separates the control device 1 from said cavity 17 and the electric motor 2 and receives the control device 1. It forms with the housing 7, the engine compartment 20.
- the plate 4 may be part of the housing 7, or be assembled to the latter, for example at the time of mounting the control device 1 on the housing 7.
- the plate here comprises a peripheral wall 6, transverse to the bottom wall 5 so that the plate 4 defines an end housing which can be described as sub-housing here forming the control compartment 10.
- the housing can be rendered external airtight via a closure lid, the sub-housing and the lid cooperating with each other via a suitable sealing means arranged between these two elements.
- the housing 7 of the engine compartment 20 comprises an opening 8 allowing a refrigerant to enter the housing 7.
- the opening 8 is here located right of the electric motor 2, that is to say that it is located at planes perpendicular to the shaft of the electric motor 2 passing through said motor shaft.
- the compression mechanism 3, located on the left of the figure, is located at a first longitudinal side 1 1 of the engine compartment 20.
- the control device 1, located on the right of FIG. 1, is located at a second longitudinal side 12 of the electric motor 2, opposite the first longitudinal side 1 1 with respect to the electric motor 2. It is understood here that the control compartment 10 is located at the second side 12 of the engine compartment 20.
- the housing 7 the sub-housing forming the control compartment 10 in which is housed the control device 1 at the second side 12 of the engine compartment 20, and a sub-housing forming a compression compartment 30 in which is housed the compression mechanism 3 at the first side 1 1 of the electric motor.
- the engine compartment 20 is interposed between the control compartment 10 and the compression compartment 30.
- these compartments may be delimited by a single peripheral part which forms a single housing, provided with a partition, or, for example, by separate sub-housings dedicated to each compartment and assembled to each other.
- the plate 4 can thus be part of the housing 7, the sub-housing forming the control compartment 10 or be connected between the housing 7 and the sub-housing forming the control compartment 10.
- the refrigerant or mixture consisting of a coolant mixed with a lubricant, enters the engine compartment 20 through the opening 8.
- the refrigerant fluid is a subcritical fluid such as for example the R134a but it can also be a supercritical refrigerant such as for example carbon dioxide known as R744.
- the lubricant is for example a polyalkylene glycol type compound.
- the fluid flows in the engine compartment 20 and in the compression compartment 30 in which is housed the compression mechanism 3.
- the latter ensures the desired increase in pressure and temperature of the refrigerant.
- the circulation of the coolant in contact with the engine allows the cooling of the latter.
- the engine compartment 20 is separated from the control compartment 10 by the plate 4 which prevents the penetration of the fluid into the control compartment 10. It is thus clear that the fluid present in the engine compartment 20 does not circulate in the compartment control device 10 for protecting the control device 1 which comprises elements having high electrical potentials.
- the control device 1 supplies the electrical energy to the electric motor 2. Since these components are in two separate compartments, it is necessary to electrically connect the control device 1 to the electric motor 2 by an electrical connection device mounted at the interface between the engine compartment 20 and the control compartment 10, for example through the bottom wall 5 of the plate 4.
- the electrical components of the control device 1 release a large amount of heat and it is therefore necessary to cool them, in particular by cooling the bottom wall 5 of the plate 4.
- said plate 4 defines a channel 40 for circulation of the refrigerant fluid for guiding the refrigerant in a plane parallel to said bottom wall 5 of the plate 4, on less than one turn around the receiving means 13 and in the same direction D.
- the fluid is thus guided to a zone predetermined 47 of the bottom wall 5 against which are arranged power elements of the control device that require increased cooling. It is understood that the fluid comes into contact with the bottom wall 5 of the plate 4 at the arrow referenced 35 in Figure 2 and is guided around the receiving means 13, on less than one turn and in the one-way D.
- the channel 40 thus allows the fluid to circulate on almost the entire plate 4 so as to cool, by rotating around the receiving means 13, without causing significant pressure losses since the entire fluid will go to through the engine compartment and to the compression compartment before having made a complete revolution around the receiving means 13.
- the fluid enters the casing 7 through the opening 8 is guided to rotate around the receiving means 13 by the channel 40 and passes through the engine to reach the compressor it passes through in turn.
- Channel 40 is designed in such a way that its depth evolves between a lower depth located at an upstream zone with respect to the direction of flow of the fluid and an increased depth at a downstream zone located near said predetermined zone 47 requiring specific cooling.
- the movement of the refrigerant fluid tends towards a direction of the coolant opposite the engine and the compression device.
- the plate 4 here comprises a proximal collector 50 and a distal collector 52 of the fluid between which the channel 40 extends. At said collectors 50, 52, the fluid passage section is wider and the guiding effect is reduced compared to that offered by the channel 40.
- the plate 4 comprises for example a partition 46 guiding the fluid at the outlet of the opening 8 in the direction of the direction D.
- the partition 46 at least partially defines the proximal collector 52.
- the partition 46 also blocks the fluid when has rotated around the receiving means so that it performs less than one revolution around the receiving means 13.
- the partition 46 limits the passage of the refrigerant through the area of the electrical terminal and the engine power connector, forcing it to pass through the entrance of the channel 40.
- the partition 46 may also form a cavity penetrating into the engine compartment 20.
- the cavity 46 is then intended primarily to receive components, such as capacity, which allows them to have optimal cooling.
- the plate 4 comprises bosses 41, here three in number, extending transversely to the bottom wall 5, in particular perpendicular, and intended to receive fastening means 42 of the plate on the housing 7.
- the bosses 41 are for example located along the peripheral wall 6. They extend inwardly of the compressor 9, that is to say towards the inside of the housing 7.
- the bosses 41 are interconnected by a wall 45 defining an edge of said circulation channel 40.
- the wall 45 remains concave between said bosses 41. It is also here in an arc between said bosses 41. For example, it is substantially parallel to the peripheral wall 6.
- the channel 40 thus makes it possible to avoid fluid foldback zones, which would create zones of turbulence opposing the direction of flow D of the fluid. Such a channel 40 thus allows a substantial reduction in the pressure drop.
- the opposite edge of the channel 40 is here defined by the landing of the receiving means 13.
- the channel 40 reduces the pressure losses relatively relatively by allowing a large portion of refrigerant to circulate with a relatively small number, or even zero, of obstacles up to said predetermined zone. As a result, it reduces the portion of refrigerant that is directly sucked by the compression mechanism.
- the refrigerant which enters the channel 40 through the opening 8 is guided by the partition 46 to the channel 40 and then by the wall 45 around the receiving means 13 in the direction of the arrow referenced D, which is identical to the direction of rotation of the rotor of the electric motor, on less of a turn.
- the refrigerating fluid arriving in the channel 40 is in fact sucked by the compression mechanism and, taking into account the conformation of the channel 40, guided along the bottom wall 5 of the plate 4.
- the bosses 41, the partition 46 and / or the wall 45 are for example formed from the peripheral wall 6 and / or the bottom wall 5 of the plate 4, that is to say, in continuity of material the rest of the plate 4 which can be obtained by forging or molding.
- the channel 40 further allows a maximum of fluid to pass through the engine and not outside thereof, that is to say outside the stator.
- the engine cooling is thus improved. It is in particular thanks to the extra thickness of material created by the bosses 41 and the wall 45 that the channel 40 guides the fluid in priority towards the center of the motor and not towards its periphery.
- the plate of the invention thus provides a solution to the optimization of cooling without degrading the overall efficiency of the compressor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1456513A FR3023328B1 (fr) | 2014-07-07 | 2014-07-07 | Plaque d'un compresseur electrique et compresseur electrique comprenant une telle plaque |
| PCT/IB2015/055116 WO2016005890A1 (fr) | 2014-07-07 | 2015-07-07 | Plaque d'un compresseur électrique et compresseur électrique comprenant une telle plaque |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3167193A1 true EP3167193A1 (fr) | 2017-05-17 |
Family
ID=51610305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15756986.4A Withdrawn EP3167193A1 (fr) | 2014-07-07 | 2015-07-07 | Plaque d'un compresseur électrique et compresseur électrique comprenant une telle plaque |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3167193A1 (fr) |
| FR (1) | FR3023328B1 (fr) |
| WO (1) | WO2016005890A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3065758B1 (fr) * | 2017-04-27 | 2019-05-03 | Valeo Japan Co., Ltd. | Compresseur electrique |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005291004A (ja) * | 2004-03-31 | 2005-10-20 | Sanden Corp | 電動圧縮機 |
| JP2007198341A (ja) * | 2006-01-30 | 2007-08-09 | Sanden Corp | 電動圧縮機及び該電動圧縮機を用いた車両用空調システム |
| JP5209259B2 (ja) * | 2007-09-25 | 2013-06-12 | サンデン株式会社 | 駆動回路一体型電動圧縮機 |
| JP5318098B2 (ja) * | 2008-05-28 | 2013-10-16 | サンデン株式会社 | 電動圧縮機 |
| FR2975448B1 (fr) * | 2011-05-19 | 2017-07-14 | Valeo Thermal Systems Japan Corp | Compresseur electrique modulaire avec dispositif de fixation integre |
-
2014
- 2014-07-07 FR FR1456513A patent/FR3023328B1/fr active Active
-
2015
- 2015-07-07 EP EP15756986.4A patent/EP3167193A1/fr not_active Withdrawn
- 2015-07-07 WO PCT/IB2015/055116 patent/WO2016005890A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016005890A1 (fr) | 2016-01-14 |
| FR3023328A1 (fr) | 2016-01-08 |
| FR3023328B1 (fr) | 2019-03-22 |
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