US 12,760,917 B2 · Ventilation system

Abstract

A ventilation system includes a refrigerant circuit, supply and exhaust fans, and a control unit. The refrigerant circuit has a compressor and first and second heat exchangers connected by a refrigerant pipe with a refrigerant flowing in the refrigerant circuit. The supply fan is arranged to supply air from an outdoor space to an indoor space through the first heat exchanger. The exhaust fan is arranged to exhaust air in the indoor space to the outdoor space through the second heat exchanger. The control unit determines whether the supply fan and the exhaust fan are normal. The control unit, upon determining that one of the supply fan or the exhaust fan is abnormal, stops the one of the supply fan or the exhaust fan determined to be abnormal, and continues an operation of an other one of the supply fan or the exhaust fan determined to be normal.

Claims9

Dependent claims

A ventilation system comprising:

a refrigerant circuit having a compressor, a first heat exchanger, and a second heat exchanger connected by a refrigerant pipe with a refrigerant flowing therein;
a supply fan arranged to supply air from an outdoor space to an indoor space through the first heat exchanger;
an exhaust fan arranged to exhaust air from the indoor space to the outdoor space through the second heat exchanger;
and
a control unit including a processor, the control unit being configured to
determine whether the supply fan and the exhaust fan are normal, and
upon determining that one of the supply fan or the exhaust fan is abnormal,
stop the one of the supply fan or the exhaust fan determined to be abnormal, and
continue an operation of an other one of the supply fan or the exhaust fan determined to be normal.

6 more elements

Dependencies are inferred from the claim text.

Ventilation system

Life of this patent

Ventilation system

Life of this patent

Abstract

Claims9