Method for terminating defrosting of an evaporator by use of air temperature measurements

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United States of America Patent

PATENT NO 11549734
APP PUB NO 20210156600A1
SERIAL NO

17044151

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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 one temperature sensor (305) monitors a temperature Tair, of air leaving the evaporator (104). A rate of change of Tair is monitored and defrosting is terminated when the rate of change of the temperature, Tair, 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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