WO2015186143A2 - Automobile air conditioner condensate reutilizing system - Google Patents
Automobile air conditioner condensate reutilizing system Download PDFInfo
- Publication number
- WO2015186143A2 WO2015186143A2 PCT/IN2015/000231 IN2015000231W WO2015186143A2 WO 2015186143 A2 WO2015186143 A2 WO 2015186143A2 IN 2015000231 W IN2015000231 W IN 2015000231W WO 2015186143 A2 WO2015186143 A2 WO 2015186143A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- reservoir
- storage
- automobile
- weight
- Prior art date
Links
Classifications
-
- 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
- B60H1/32—Cooling devices
- B60H1/3233—Cooling devices characterised by condensed liquid drainage means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0027—Condensation of vapours; Recovering volatile solvents by condensation by direct contact between vapours or gases and the cooling medium
- B01D5/003—Condensation of vapours; Recovering volatile solvents by condensation by direct contact between vapours or gases and the cooling medium within column(s)
-
- 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
- B60H1/32—Cooling devices
- B60H1/3233—Cooling devices characterised by condensed liquid drainage means
- B60H1/32331—Cooling devices characterised by condensed liquid drainage means comprising means for the use of condensed liquid, e.g. for humidification or for improving condenser performance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
- B60S1/48—Liquid supply therefor
- B60S1/50—Arrangement of reservoir
Definitions
- the present invention generally relates to vehicle-based water management system. More particularly, the invention relates to an effective utilization of water flowing out from an automobile air conditioner for other purposes in a vehicle or for human needs.
- the car also constitutes certain units where water is required for various purposes. These include water for cleaning the wind shield, water for engine cooling the engine, water for head lamp cleaning etc.
- water for cleaning the wind shield water for engine cooling the engine
- water for head lamp cleaning etc.
- the individual or the service personal must routinely inspect and refill the water in all these reservoirs.
- a specific method is needed to direct the water condensed from the air conditioner to various units where water is required.
- United States Patent No. 6431201 to Chau; Chin Lyeentitled “Wet battery and vehicle-based water management system” describes a water management apparatus for a motor car in which the condensed water from the air conditioning system is stored in the central storage tank and fed into the plurality of storage tank via a pipe. The fed water is filtered using a mechanical filter and used for spray jets or to radiator of the engine's cooling system. Overflow outlet arrangement is used to drain excess water, when the tank is full.
- Chinese Patent No. 203132065 and 203198688 relate to an automobile air conditioning condensation water recycling unit where the condensed water is stored in small containers and pumped using pumping motors to the other purpose storage containers.
- Cispheral Patent No. 2441670 to Huang Dabiao entitled “Device for automatic using condensation of automobile air conditioner” discusses a device for automatically using the condensed water of an automobile air conditioner.
- the condensed water is stored in water holder and an output end with plurality of furcate openings is respectively connected to a water tank like wiper tank or heat dissipation net of an engine.
- the output terminal of the fork has a sensing sensor switch to control the on or off state of fork.
- Mini electric water pump is used in the condensed water for uphill transport.
- United States Patent Application No. 20040237561 to Duarte Barreto Junior, Walter; entitled “System for utilizing water originating from the air conditioning system in order to supply water to the automobile windshield wiper reservoir” relates to a system with water collecting container which comprises a pump for pumping the waterto the windshield wiper system.
- the present invention aims to preserve water as a green initiative and utilize it for various purposes in the vehicle and also for human needs.
- An object of the present invention is ⁇ utilize the condensed water drained from an automotive air conditioning system.
- the system consists of a storage reservoir or container that collects water from the automobile air conditioner and then transfers it by a pump through a filter to various air tight water storage reservoirs.
- the water from the air tight water storage reservoirs can be used as a source for fire protection system in the event of fire in vehicles and also can be used to make up the water required for engine cooling purpose, wind shield screen washer and head light washer.
- the water so generated is further purified by providing extra filters before each automobile storage reservoir..
- a weight sensor or a level sensor is utilised individually in all the reservoirs.
- FIG. 1 is a schematic diagram showing the step by step process of the water from automobile air conditioners being collected in the water storage reservoirs. DETAILED DESCRIPTION OF THE INVENTION;
- the AC water utilization is introduced in order to preserve the water that is drained from the condenser and wasted on the ground.
- the automobile fitted with air conditioners will release certain amount of water due to condensation of hot air when the air 100 conditioner is in the "ON" mode.
- the quantity of water depends on the size of the vehicle and cooling capacity of the air conditioner of the vehicle i.e. the generation of water will be more in a bus than in a car.
- a water storage reservoir 105 from the automobile is initially collected in a water storage reservoir.
- the pump connected with this reservoir starts automatically and the water will be pumped through a filter to an air tight water storage reservoir which is fitted with a maximum and minimum level sensor or weight sensors.
- the weight sensor senses the weight of water in the air tight
- the level sensor senses the level of water in the air tight storage reservoir.
- the pump fitted with the air tight storage reservoir automatically starts when the water weight or level reaches maximum.
- the water will be pumped either to the coolant reservoir or to the wind shield water reservoir or to head lamp cleaning water reservoir or to the drinking water reservoir or to the fire protection system depending on the level of water in
- Extra filters are provided before each automobile storage reservoir to make sure that the water is clean and free from impurities.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Air-Conditioning For Vehicles (AREA)
- Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)
Abstract
An automobile air conditioner condensate reutilizing system is provided. It includes water storage container for storing waste water generated from automobile air conditioners. Weight sensor and level sensor are provided with an airtight storage container which receives filtered water from the storage container. The sensors senses maximum and minimum level / weight of water in the air tight storage container and activate the pump automatically to fill respective reservoirs used for various purposes
Description
FIELD OF THE INVENTION:
The present invention generally relates to vehicle-based water management system. More particularly, the invention relates to an effective utilization of water flowing out from an automobile air conditioner for other purposes in a vehicle or for human needs.
BACKGROUND OF THE INVENTION;
Now a day's using automobile is not considered as luxury but a necessity. Also due to the increase in atmospheric temperature especially in summer, the automobile air conditioners are turned on for maximum number of hours in a day. Automobile sales are growing at a very high rate and especially the percentage of air conditioned automobiles sales are even touching up to 90 % of the total sales. When the air conditioner of automobile is switched on while running, certain amount of water flows out through the bottom of the vehicle. This is due to the condensation process of the air conditioner while cooling the passenger cabin of the automobile. This is clearly visible when the automobile is stopped after running some distance and the air conditioner is in the ON mode. This water is wasted to the ground. Studies show that around 1 litre of water is generated and wasted when an automobile runs for about 40-50 KM with the air conditioner in the "ON" mode.
Moreover, the car also constitutes certain units where water is required for various purposes. These include water for cleaning the wind shield, water for engine cooling the engine, water for head lamp cleaning etc. Thus the individual or the service personal must routinely inspect and refill the water in all these reservoirs. In order to reduce this manual process of filling water or the problems which can affect the vehicle due to water level been low, to reduce time and operational cost and prevent the wastage of water, a specific method is needed to direct the water condensed from the air conditioner to various units where water is required.
In the conventional system, there are some methods available for the utilization of this water. United States Patent No. 6431201 to Chau; Chin Lyeentitled "Wet battery and vehicle-based
water management system" describes a water management apparatus for a motor car in which the condensed water from the air conditioning system is stored in the central storage tank and fed into the plurality of storage tank via a pipe. The fed water is filtered using a mechanical filter and used for spray jets or to radiator of the engine's cooling system. Overflow outlet arrangement is used to drain excess water, when the tank is full.
Chinese Patent No. 203132065 and 203198688 relate to an automobile air conditioning condensation water recycling unit where the condensed water is stored in small containers and pumped using pumping motors to the other purpose storage containers.
Chinese Patent No. 2441670 to Huang Dabiao entitled "Device for automatic using condensation of automobile air conditioner" discusses a device for automatically using the condensed water of an automobile air conditioner. The condensed water is stored in water holder and an output end with plurality of furcate openings is respectively connected to a water tank like wiper tank or heat dissipation net of an engine. The output terminal of the fork has a sensing sensor switch to control the on or off state of fork. Mini electric water pump is used in the condensed water for uphill transport.
United States Patent Application No. 20040237561 to Duarte Barreto Junior, Walter; entitled "System for utilizing water originating from the air conditioning system in order to supply water to the automobile windshield wiper reservoir" relates to a system with water collecting container which comprises a pump for pumping the waterto the windshield wiper system.
Chinese Patent No. 202002283 to ZHANGZHOU JINLONG BUS CO LTD entitled "Automotive air conditioner with condensed water atomizer pump" discloses a guide valve to collect the condensed water from automotive air conditioner and spray it with the atomizer pump for keeping, the circumference of the automobile clean and to increase the cooling speed of the automobile
All existing art though disclose a manual or automatic method of using the condensed water from the air conditioner for various means, the method is slightly complex compared to the methods disclosed in the invention. These prior art does not include sensor arrangement
which can sense the weight / level of the water in the storage reservoir continuously. The present invention is to utilize the condensed water for various purposes in the vehicle and it is considered most simple based on the pump mechanism that filters the water by sensing the maximum weight / level in the storage container and redirecting it to the other air tight reservoirs to be stored for various purposes.
The present invention aims to preserve water as a green initiative and utilize it for various purposes in the vehicle and also for human needs.
SUMMARY OF THE INVENTION:
An object of the present invention is ίό utilize the condensed water drained from an automotive air conditioning system. The system consists of a storage reservoir or container that collects water from the automobile air conditioner and then transfers it by a pump through a filter to various air tight water storage reservoirs. The water from the air tight water storage reservoirs can be used as a source for fire protection system in the event of fire in vehicles and also can be used to make up the water required for engine cooling purpose, wind shield screen washer and head light washer. The water so generated is further purified by providing extra filters before each automobile storage reservoir.. For reading the level/ weight of water in each reservoir, a weight sensor or a level sensor is utilised individually in all the reservoirs.
BRIEF DESCRIPTION OF THE DRAWINGS
The objective of the present invention will how be described in more detail with reference to the accompanying drawing, in which:
FIG. 1 is a schematic diagram showing the step by step process of the water from automobile air conditioners being collected in the water storage reservoirs.
DETAILED DESCRIPTION OF THE INVENTION;
In the present invention, the AC water utilization is introduced in order to preserve the water that is drained from the condenser and wasted on the ground. The automobile fitted with air conditioners will release certain amount of water due to condensation of hot air when the air 100 conditioner is in the "ON" mode. The quantity of water depends on the size of the vehicle and cooling capacity of the air conditioner of the vehicle i.e. the generation of water will be more in a bus than in a car.
Now referring to the invention in more detail, as illustrated in fig 1, the AC water drained
105 from the automobile is initially collected in a water storage reservoir. When the water in the initial storage reservoir reaches maximum set weight or the maximum level, the pump connected with this reservoir starts automatically and the water will be pumped through a filter to an air tight water storage reservoir which is fitted with a maximum and minimum level sensor or weight sensors. The weight sensor senses the weight of water in the air tight
110 storage reservoir or the level sensor senses the level of water in the air tight storage reservoir.
The pump fitted with the air tight storage reservoir automatically starts when the water weight or level reaches maximum. The water will be pumped either to the coolant reservoir or to the wind shield water reservoir or to head lamp cleaning water reservoir or to the drinking water reservoir or to the fire protection system depending on the level of water in
115 these tanks or as the case may be. This pumping process will continue till water reaches the maximum by weight identified by the weight sensor or maximum level by the level sensor in the respective storage tanks or till it reaches the minimum level or weight in the initial storage tank. In the event of all the reservoirs are full and the weight/level of water in the initial storage reservoir reaches the maximum value, the exhaust valve opens and the water will be
120 pumped and drained to the ground.
Extra filters are provided before each automobile storage reservoir to make sure that the water is clean and free from impurities.
125 While this invention has been particularly shown and described with references to preferred embodiments thereof it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention encompassed by the appended claims.
Claims
We Claim:
130 1. An automobile air conditioner condensate reutilizing system, comprising: (i) water storage reservoir, wherein said reservoir is used to collect air conditioner condensate from automobile; (ii) a filter, wherein said filter is used to clean the water collected in said water storage reservoir; (iii)Air tight water reservoir, wherein said air tight reservoir is used to store filtered water from said water storage reservoir; (iv) a weight
135 sensor, wherein said weight sensor is used to sense the maximum and minimum weight of the water in said air tight water reservoir; (v) a level sensor, wherein said level sensor is used to sense the maximum and minimum level of water in said air tight water storage reservoir; (vi) pump, wherein said pump is used to transfer water between said storage reservoirs; (vii) exhaust valves, wherein said valve is used to
140 drain excess water to ground and (viii) extra filters are provided above each automobile storage reservoir, wherein said filters is to clean and purify water.
2. A method for utilizing automobile air conditioner condensate with the system of the present invention comprising, (a) collecting said waste water in a water storage reservoir; (b) filtering the water stored in said water storage reservoir using a filter;
145 (c) pumping the filtered water into . an air tight water storage reservoir provided with weight sensor or level sensor; (d) pumping water into automobile water reservoirs when said weight or level sensor provided with said air tight storage reservoirs shows maximum levels; (e) restarting filtration of said waste water stored in said water storage container to fill said air tight storage container when said weight or level
150 sensor provided with said air tight storage reservoirs shows minimum levels; and (f) draining water through exhaust valve when said reservoirs are full
3. The method according to claim 02, wherein said automobile storage reservoirs include fire protection system reservoir, engine coolant storage reservoir, wind shield washer storage reservoir, head lamp washer storage reservoir and drinking water reservoir
155
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN2772/CHE/2014 | 2014-06-05 | ||
| IN2772CH2014 | 2014-06-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2015186143A2 true WO2015186143A2 (en) | 2015-12-10 |
| WO2015186143A3 WO2015186143A3 (en) | 2016-01-28 |
Family
ID=54007944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IN2015/000231 WO2015186143A2 (en) | 2014-06-05 | 2015-06-04 | Automobile air conditioner condensate reutilizing system |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2015186143A2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555184A (en) * | 2019-01-09 | 2019-04-02 | 山东钢铁股份有限公司 | A kind of coke-oven plant, coking workshop and its condensation water conveying system |
| CN110920347A (en) * | 2018-09-20 | 2020-03-27 | 长城汽车股份有限公司 | Vehicle air conditioning system and condensate water recycling system thereof |
| DE102018125538A1 (en) * | 2018-10-15 | 2020-04-16 | Bayerische Motoren Werke Aktiengesellschaft | Optical device for a motor vehicle |
| DE102019125176A1 (en) * | 2019-09-18 | 2021-03-18 | Kautex Textron Gmbh & Co. Kg | Condensation device for a motor vehicle and condensation process |
| CN112969605A (en) * | 2018-10-31 | 2021-06-15 | 考特克斯·特克斯罗恩有限公司及两合公司 | Method and device for controlling water extraction in a motor vehicle |
| WO2022185299A1 (en) * | 2021-03-02 | 2022-09-09 | Guy Raviv | Utility water from a vehicle |
| US11512010B2 (en) | 2020-12-01 | 2022-11-29 | Ford Global Technologies, Llc | Water generation system for a vehicle that implements sanitization by ultraviolet light |
| US11850918B1 (en) | 2023-10-05 | 2023-12-26 | Prince Mohammad Bin Fahd University | System for water collection and redistribution in vehicle |
| US11878619B2 (en) | 2020-12-01 | 2024-01-23 | Ford Global Technologies, Llc | Liquid dispensing apparatus for a vehicle with a dispenser and a source of ultraviolet light to sanitize the dispenser |
| WO2024100572A1 (en) * | 2022-11-09 | 2024-05-16 | Endless Water - Ecological Solutions Ltd | Systems and methods of utilizing air conditioner condensate for cleansing windows |
| US12139423B2 (en) | 2022-03-01 | 2024-11-12 | Ford Global Technologies, Llc | Diagnostics of an on-board water generation system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5435151A (en) * | 1994-05-09 | 1995-07-25 | Han; Chin-Lung | Automobile distiller |
| DE102004045149A1 (en) * | 2003-10-30 | 2005-06-02 | Volkswagen Ag | Liquid level sensor, especially for measuring the amount of liquid in a windscreen wash reservoir, comprises a weighing device and an evaluation unit for determining the liquid level by weighing |
| IL200680A0 (en) * | 2009-09-01 | 2010-05-17 | Water Gen Ltd | Vehicle integrable water producing device |
-
2015
- 2015-06-04 WO PCT/IN2015/000231 patent/WO2015186143A2/en active Application Filing
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110920347B (en) * | 2018-09-20 | 2022-06-21 | 长城汽车股份有限公司 | Vehicle air conditioning system and condensate water recycling system thereof |
| CN110920347A (en) * | 2018-09-20 | 2020-03-27 | 长城汽车股份有限公司 | Vehicle air conditioning system and condensate water recycling system thereof |
| DE102018125538A1 (en) * | 2018-10-15 | 2020-04-16 | Bayerische Motoren Werke Aktiengesellschaft | Optical device for a motor vehicle |
| CN112969605B (en) * | 2018-10-31 | 2023-08-22 | 考特克斯·特克斯罗恩有限公司及两合公司 | Method and device for controlling water extraction in a motor vehicle |
| CN112969605A (en) * | 2018-10-31 | 2021-06-15 | 考特克斯·特克斯罗恩有限公司及两合公司 | Method and device for controlling water extraction in a motor vehicle |
| CN109555184A (en) * | 2019-01-09 | 2019-04-02 | 山东钢铁股份有限公司 | A kind of coke-oven plant, coking workshop and its condensation water conveying system |
| WO2021052680A1 (en) * | 2019-09-18 | 2021-03-25 | Kautex Textron Gmbh & Co. Kg | Condensation device for a motor vehicle, and condensation method |
| DE102019125176A1 (en) * | 2019-09-18 | 2021-03-18 | Kautex Textron Gmbh & Co. Kg | Condensation device for a motor vehicle and condensation process |
| US11512010B2 (en) | 2020-12-01 | 2022-11-29 | Ford Global Technologies, Llc | Water generation system for a vehicle that implements sanitization by ultraviolet light |
| US11878619B2 (en) | 2020-12-01 | 2024-01-23 | Ford Global Technologies, Llc | Liquid dispensing apparatus for a vehicle with a dispenser and a source of ultraviolet light to sanitize the dispenser |
| WO2022185299A1 (en) * | 2021-03-02 | 2022-09-09 | Guy Raviv | Utility water from a vehicle |
| US12139423B2 (en) | 2022-03-01 | 2024-11-12 | Ford Global Technologies, Llc | Diagnostics of an on-board water generation system |
| WO2024100572A1 (en) * | 2022-11-09 | 2024-05-16 | Endless Water - Ecological Solutions Ltd | Systems and methods of utilizing air conditioner condensate for cleansing windows |
| US11850918B1 (en) | 2023-10-05 | 2023-12-26 | Prince Mohammad Bin Fahd University | System for water collection and redistribution in vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015186143A3 (en) | 2016-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2015186143A2 (en) | Automobile air conditioner condensate reutilizing system | |
| US10844774B2 (en) | Method and system for water collection and usage on-board a vehicle | |
| US10569728B2 (en) | Method and system for water usage on-board a vehicle | |
| US20130206266A1 (en) | Recycled Water Storage System for Vehicle Windscreen Cleaning | |
| US10913414B2 (en) | Method and system for water usage on-board a vehicle | |
| US8252174B2 (en) | Vehicle-integrated water harvesting system | |
| US20160083936A1 (en) | Harvesting and Purification of Water From A Vehicle | |
| US10480163B2 (en) | Vehicle-to-trailer transfer of harvested and purified water | |
| US20070125520A1 (en) | Air conditioner cleaning apparatus and method | |
| US6289689B1 (en) | Water collection and dispensing machine | |
| US6779358B2 (en) | Water collection and dispensing machine | |
| US20220281419A1 (en) | Utility Water from a Vehicle | |
| US10759237B2 (en) | Sustainable and integrated system for cooling vehicle tires externally | |
| CN102874162B (en) | A kind of cleaning Vehicle | |
| CN205001052U (en) | Heat abstractor is assisted to car waste water reclamation | |
| CN211551983U (en) | Air duct self-cleaning device suitable for air conditioner indoor unit and air conditioner indoor unit | |
| CN205573846U (en) | On -vehicle solar energy refrigeratable air purification system | |
| US11850918B1 (en) | System for water collection and redistribution in vehicle | |
| JP2008238953A (en) | Washer liquid supplying device | |
| CN203239478U (en) | Diesel oil filter assembly | |
| CN210418859U (en) | Air purification system of elevator | |
| JPH01313616A (en) | Cooling device for air-cooled radiator | |
| CN205344835U (en) | Novel wiper kettle that catchments device | |
| CN207657571U (en) | A kind of multifunctional vehicle mounted clarifier | |
| WO2014116141A1 (en) | Device for collecting water for subsequent use in a windscreen washer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15754303 Country of ref document: EP Kind code of ref document: A2 |
|
| NENP | Non-entry into the national phase in: |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 15754303 Country of ref document: EP Kind code of ref document: A2 |