Method and set for cleaning surfaces, especially surfaces of electrical devices being under voltage

(19)

(11)

EP 2 596 910 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	03.09.2014 Bulletin 2014/36

(43)	Date of publication A2:
	29.05.2013 Bulletin 2013/22

(21)	Application number: 12184477.3

(22)	Date of filing: 14.09.2012

(51)

International Patent Classification (IPC):

B24C 1/00^(2006.01)
B24C 11/00^(2006.01)

B24C 3/32^(2006.01)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA ME

(30)

Priority:

11.10.2011 PL 39660311

(71)	Applicants:
	Zmijewski, Tomasz 25-150 Kielce (PL) Majcher, Monika 25-636 Kielce (PL)

(72)	Inventors:
	Zmijewski, Tomasz 25-150 Kielce (PL) Majcher, Monika 25-636 Kielce (PL) Hyzy, Tomasz 94-102 Lodz (PL) Chodkiewicz, Karol 25-640 Kielce (PL)

(74)	Representative: Hudy, Ludwik
	Kancelaria Patentowa Patelha Czernichow 4 32-070 Czernichow, Krakow 32-070 Czernichow, Krakow (PL)

(54)	Method and set for cleaning surfaces, especially surfaces of electrical devices being under voltage

(57) In a method of cleaning surfaces, especially surfaces of electric devices under voltage, using a dry ice method, a stream of compressed air is applied onto a cleaned surface at a safe distance. Before applying, the compressed air is dried to humidity of 0,008 - 0,0002 g/m³ and then, is passed through a container with dry ice of the temperature from -70°C to -30°C and granulation from 1,5 to 5 mm.
A set for cleaning surfaces comprises a nozzle embedded on a lance connected by a house with a dispensing device (6) of a dry ice and compressed air supplied by a compressor (2). Between the compressor (2) and the dispensing device (6) of dry ice there is mounted a dehumidifier (4) of compressed air connected by a hose (3) with the compressor (2) and by a second hose (5) with the dispensing device (6) of dry ice.

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