# US 10,371,397 B1 · Air cooling system for a building structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,371,397 B1 - Document ID: US10371397B1 - Status: Granted - Kind: B1 - Application number: 15/905,401 - Filed: 2018-02-26 - Granted: 2019-08-06 - Earliest claimed: 2005-07-13 - Assignees: Qc Manufacturing, Inc. - Applicants: QC Manufacturing, Inc. - Inventors: Dana Charles Stevenson - Web page: https://patentgrep.com/patent/US10371397B1 ## CPC - F24F 5/0035: {using evaporation} - F24F 1/38: Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings - F24F 7/065: {fan combined with single duct; mounting arrangements of a fan in a duct} - F24F 13/0218: {Flexible soft ducts, e.g. ducts made of permeable textiles} - F24F 2013/242: {Sound-absorbing material} - Y02B 30/54: Free-cooling systems - F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02) - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract An energy efficient and quiet air cooling system for a building structure is provided. The air cooling system includes an evaporator system mounted in the wall of the building, a remotely mounted fan, an air intake, and a sound and heat insulating duct. The fan is mounted in the attic and configured to draw air from the living area of the building through the sound insulating duct with sufficient power to create a negative static pressure in the living area. The negative static pressure in turn causes outside air to flow through the evaporator system which removes heat from the outside air. The cooled air is in turn drawn into the building and pulled into the attic through the duct and expelled through the attic. The fan expels warm air into the attic, creating a positive pressure environment which causes the warm air to be expelled from the attic through natural vents. ## Claims ### Claim 1 An air cooling system for a building structure with a living area and an attic area, the system comprising: a fan assembly adapted to be suspended from a roof rafter in the attic area of the building structure, said fan assembly comprising an air intake, a motorized fan, and an acoustical and thermal insulating duct, said insulating duct providing a flow path between the air intake and the motorized fan, the motorized fan adapted to provide an airflow capacity between 1000 and 6000 cubic feet per minute; an attic vent providing an exhaust air flow path between the attic area and the air outside of the building structure; a window; a housing disposed in a through-the-wall opening of an external wall of the building structure, said housing providing an inlet air flow path between the living area and the air outside of the building structure; a first grille coupled to the housing, said first grille extending transversely across at least a portion of the inlet air flow path; and a damper coupled to the housing and spaced apart from the first grille, the damper disposed between the first grille and the living area, the damper extending across at least a portion of the inlet air flow path; wherein the motorized fan is adapted to draw air in the living area up through the air intake and the duct, and to expel said air into the attic area to create a positive static pressure sufficient to cause the air in the attic area to be pushed out through the attic vent; wherein the motorized fan is adapted to create a negative static pressure in the living area to draw outside air into the living area through the inlet air flow path. ### Claim 2 (depends on 1) The air cooling system of claim 1 further comprising a second perforated grille coupled to the housing, said second perforated grille extending transversely across at least a portion of the inlet air flow path and spaced apart from the first perforated grille. ### Claim 3 (depends on 2) The air cooling system of claim 2 further comprising an evaporative cooling media disposed within the housing and between the first and second perforated grilles. ### Claim 4 (depends on 3) The air cooling system of claim 3, wherein the evaporative cooling media comprises a cellulose pad. ### Claim 5 (depends on 1) The air cooling system of claim 1 further comprising a thermostat adapted to control the motorized fan. ### Claim 6 (depends on 5) The air cooling system of claim 5 wherein the thermostat is configured to turn on and off the motorized fan based on a preset temperature limit of the air in the living area. ### Claim 7 (depends on 1) The air cooling system of claim 1, wherein the motorized fan is suspended from an intermediate structure that is coupled to a roof rafter in the attic area. ### Claim 8 (depends on 7) The air cooling system of claim 7, wherein the intermediate structure reduces a noise caused by a vibration of the motorized fan. ### Claim 9 (depends on 7) The air cooling system of claim 7, wherein the intermediate structure prevents the motorized fan from being in direct contact with any portion of the building structure. ### Claim 10 (depends on 1) The air cooling system of claim 1, wherein the insulating duct is adapted to be bent at an angle of between 30-60 degrees. ### Claim 11 (depends on 9) The air cooling system of claim 9, wherein the insulating duct has a length of at least 4 feet and has a thermal insulating R value of at least 4.