Ventilator, and defrosting method
AssigneeMitsubishi Electric Corporation
InventorsMamoru HAMADA, Hayato HORIE, Masaki TOYOSHIMA
Life of this patent
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Abstract
A ventilator includes an exhaust air duct for exhausting air from an interior space to an outside and a supply air duct for supplying air from the outside to the interior space, and is equipped with a heat exchanger and a defroster. The heat exchanger performs heat exchange between air passing through the exhaust air duct and air passing through the supply air duct. The defroster defrosts, when frost attaches to the heat exchanger, the heat exchanger by, after air flows into the exhaust air duct or the supply air duct, changing a state of the air.
Claims9
A ventilator including an exhaust air duct for exhausting air from an interior space to an outside and a supply air duct for supplying air from the outside to the interior space, the ventilator comprising:
- a heat exchanger configured to perform heat exchange between air passing through the exhaust air duct and air passing through the supply air duct,
- a first temperature sensor configured to sense, within the supply air duct or the exhaust air duct, a temperature of the air after passing through the heat exchanger, and
- a defroster configured to, (i) when frost attaches to the heat exchanger and the temperature of the air, within the supply air duct, sensed by the first temperature sensor becomes less than a first threshold or (ii) when the frost attaches to the heat exchanger and the temperature of the air, within the exhaust air duct, sensed by the first temperature sensor exceeds a second threshold, defrost the heat exchanger by, after the air flows into the exhaust air duct or the supply air duct, changing a state of the air.
(canceled)
(canceled)
A defrosting method comprising:
- (i) when frost attaches to a heat exchanger configured to perform heat exchange between (a) air passing through an exhaust air duct for exhausting air from an interior space to an outside and (b) air passing through a supply air duct for supplying air from the outside to the interior space and a temperature of the air, within the supply air duct, after passing through the heat exchanger becomes less than a first threshold or
- (ii) when the frost attaches to the heat exchanger and a temperature of the air, within the exhaust air duct, after passing through the heat exchanger exceeds a second threshold,
- defrosting the heat exchanger by, after the air flows into the exhaust air duct or the supply air duct, changing a state of the air.
Dependencies are inferred from the claim text.