Ventilation apparatus

A ventilation apparatus comprising:

• a housing defining an inner space, the housing having an outdoor air inlet, an outdoor air outlet, an indoor air inlet, and an indoor air outlet;
• a partition configured to divide the inner space of the housing into a ventilation space and an air conditioning space, the partition having an air conditioning inlet and an air conditioning outlet;
• a boundary wall configured to divide the air conditioning space into an evaporator space and an evaporation fan space;
• a total heat exchange element located in the ventilation space, the total heat exchange element having a hexahedral shape with four side edges respectively disposed to face four side surfaces of the housing;
• four partition walls configured to respectively connect the four side edges of the total heat exchange element and four side surfaces of the housing to divide the ventilation space, except for a space for the total heat exchange element, into an outdoor air inlet space, an outdoor air discharge space, an indoor air inlet space, and an indoor air discharge space;
• an outdoor air discharge guide duct disposed in the outdoor air discharge space, a lower surface of the outdoor air discharge guide duct being in communication with the air conditioning outlet;
• an indoor air inlet guide duct disposed in the indoor air inlet space, the indoor air inlet guide duct including:
• an upper surface in communication with the indoor air inlet;
• a lower surface in communication with the air conditioning inlet;
• a total heat exchange outlet located on a first side surface of the indoor air inlet guide duct;
• and
• a bypass hole located on a second side surface of the indoor air inlet guide duct;
• an indoor air discharge guide duct disposed in the indoor air discharge space;
• a bypass duct branching from the indoor air inlet guide duct, the bypass duct being configured to bypass the total heat exchange element, the bypass duct extending to the indoor air discharge space, the bypass duct having an inlet corresponding to the bypass hole of the indoor air inlet guide duct;
• a suction fan disposed in the outdoor air discharge space, the suction fan having an outlet connected to a side surface of the outdoor air discharge guide duct;
• an exhaust fan disposed in the indoor air discharge space, the exhaust fan having an outlet connected to a side surface of the indoor air discharge guide duct;
• an evaporator disposed in the evaporator space of the air conditioning space;
• an evaporation fan disposed in the evaporation fan space of the air conditioning space;
• a total heat exchange damper configured to selectively open and close the total heat exchange outlet located on the first side surface of the indoor air inlet guide duct;
• and
• a bypass damper configured to selectively open and close the bypass hole located on the second side surface of the indoor air inlet guide duct,
• wherein indoor air introduced through the indoor air inlet selectively passes through the total heat exchange element according to an operation mode of the ventilation apparatus, and
• wherein the operation mode includes a quick cooling mode where the air conditioning inlet is configured to be in communication with the indoor air inlet guide duct and the evaporation fan space to allow indoor air to be introduced into the evaporation fan space, and the air conditioning outlet is configured to be in communication with the outdoor air discharge guide duct and the evaporator space, such that the indoor air in an indoor space is introduced into the indoor air inlet guide duct, passes through the air conditioning inlet, is discharged to the evaporator space by the evaporation fan, exchanges heat with the evaporator, passes through the air conditioning outlet to be introduced into the outdoor air discharge guide duct, and is supplied to the indoor space.