Building ventilation system

• Main Authors: LU YAJING, QIU QIANSHENG, TIAN XINJIAO
• Format: Patent
• Language: Chinese; English
• Published: 12.01.2021
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

The utility model discloses a building ventilation system. According to the building ventilation system, a ventilation hole is formed in the upper half portion of a first wall; the cover plate is located on the inner side of the first wall body and makes contact with the ventilation holes; the cover plate is provided with a first extension part along the direction of the second wall body; the cover plate is provided with a second extension part along the direction of the third wall body; the second wall body is provided with a first sliding groove which is matched with the first extending partto slide up and down; the third wall body is provided with a second sliding groove which is matched with the second extending part to slide up and down; and when the first extension part and the second extension part slide up and down, the contact area between the cover plate and the ventilation hole is changed. The ventilation holes are formed in the upper half portion of the first wall body, air outside a house cannot