Indoor unit and heating and ventilation system

• Main Authors: YU DONGDONG, WU HAIMIN, ZHOU BAISONG, ZHONG JINQING, LI YUEFEI, ZHENG YALEI, LI YI, HU HUI, WU YANDONG, YANG FENG
• Format: Patent
• Language: Chinese; English
• Published: 28.05.2024
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

The invention discloses an indoor unit and a heating and ventilation system. The indoor unit comprises a shell and a wind wheel. The shell is provided with a heat exchange cavity, a wind wheel cavity and a diffusion cavity which are sequentially communicated and comprises a front volute tongue and a rear volute tongue, the front volute tongue is arranged at the joint of the wind wheel cavity and the heat exchange cavity, and the rear volute tongue is arranged at the joint of the diffusion cavity and the wind wheel cavity. The wind wheel is located between the front volute tongue and the rear volute tongue. In the datum plane, the rotation center of the wind wheel is a point O, the axis penetrating through the rotation center and extending in the height direction of the installation environment is S, the front volute tongue and the rear volute tongue are arranged on the two sides of the axis S respectively, the axis S and the top wall and the bottom wall of the wind wheel cavity intersect at a point J and a po