Method for monitoring of refrigeration system

(19)

(11)

EP 1 906 290 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	23.12.2009 Bulletin 2009/52

(43)	Date of publication A2:
	02.04.2008 Bulletin 2008/14

(21)	Application number: 07019022.8

(22)	Date of filing: 27.09.2007

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International Patent Classification (IPC):

F25B 49/00^(2006.01)

G05B 23/02^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK RS

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Priority:

27.09.2006 SE 0602021

(71)	Applicant: TNT-Elektronik AB
	783 90 Säter (SE)

(72)	Inventor:
	Platbardis, Janis 78390 Säter (SE)

(74)	Representative: Lundquist, Lars-Olof
	L-O Lundquist Patentbyra AB, Box 80 651 03 Karlstad 651 03 Karlstad (SE)

(54)	Method for monitoring of refrigeration system

(57) Method for using a sensor (11) and a receiver (12) for monitoring a refrigeration system which has a compressor (1) and a pipe (8) which comes from the compressor and which conveys refrigerant. According to the invention, a temperature detector (13) of the sensor is disposed on top of the pipe in order to indirectly measure the temperature of the refrigerant, and a processor (17) of the sensor is used to calculate an operating state value, a cycle time and a load factor for the compressor based on the measured temperature, after which the sensor sends these values to the receiver.

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