Patent ID: 9021821
Filing Date: 2015-05-05
Classification: F24F,H05K,Y02B

Abstract:
1. A ventilation device operable in a humidification mode and a dehumidification mode, the device comprising: a first section configured to draw in outdoor air to form a first outdoor air stream during the dehumidification mode; a second section configured to draw in outdoor air to form a second outdoor air stream during the humidification mode; a third section configured to draw in return air from an enclosed space to form a return air stream during the humidification mode; at least one heat exchanger that includes a first part in the first section and a second part in the second section; at least one humidifying element downstream from the heat exchanger which is active during the humidification mode to humidify the second outdoor air stream and inactive during the dehumidification mode; at least one dehumidifying coil upstream from the heat exchanger which is active during the dehumidification mode to cool the first outdoor air stream and inactive during the humidification mode; and a mixing chamber for mixing the second outdoor air stream and the return air stream from the enclosed space during the humidification mode; wherein during operation in the dehumidification mode, the first outdoor air stream travels through the first section and through the first part of the heat exchanger to cool the outdoor air, next through the dehumidifying coil where a temperature and a humidity of the first outdoor air stream is reduced, and then through the second part of the heat exchanger where the temperature is increased before exiting the device as a supply air stream, and wherein during operation in the humidification mode, the second outdoor air stream travels through the second section and through the second part of the heat exchanger to heat the outdoor air and the return air stream travels through the first part of the heat exchanger to cool the return air, and then the second outdoor air stream and the return air stream are mixed in the mixing chamber before passing through the humidifying element and exiting the device as the supply air stream.