Method for terminating defrosting of an evaporator

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United States of America Patent

PATENT NO 12044450
APP PUB NO 20210033325A1
SERIAL NO

17044170

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Abstract

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A method for terminating defrosting of an evaporator (104) is disclosed. The evaporator (104) is part of a vapour compression system (100). The vapour compression system (100) further comprises a compressor unit (101), a heat rejecting heat exchanger (102), and an expansion device (103). The compressor unit (101), the heat rejecting heat exchanger (102), the expansion device (103) and the evaporator (104) are arranged in a refrigerant path, and an air flow is flowing across the evaporator (104). When ice is accumulated on the evaporator (104), the vapour compression system (100) operates in a defrosting mode. At least two temperature sensors (306, 307) monitor an evaporator inlet temperature, Te,in, at a hot gas inlet (304) of the evaporator (104) and an evaporator outlet temperature, Te,out, at a hot gas outlet (305) of the evaporator (104). A difference between Te,in and Te,out, is monitored and defrosting is terminated when the rate of change of the difference between Te,in and Te,out approaches zero.

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Patent Owner(s)

Patent OwnerAddress
DANFOSS A/SNORDBORGVEJ 81 DK-6430 NORDBORG NORDBORG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Izadi-Zamanabadi, Roozbeh Nordborg, DK 13 52
Thomsen, Carsten Mølhede Nordborg, DK 3 3

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