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Air coolers (also known as evaporative coolers) are common summer appliances that deliver cool air through water evaporation or refrigeration. They are widely used in homes, offices, shops, and other spaces. Air cooler housings are relatively large, accommodating multiple components such as the motor, fan wheel, water curtain, and water tank, making them typical large injection-molded parts for appliances.
As the structural framework of the entire unit, the air cooler housing must maintain precise dimensional relationships between various mounting points—the motor base must align accurately with the fan wheel, and the water curtain bracket must have proper assembly clearance with the housing. Any deformation or sink marks in the housing will directly affect the assembly efficiency of internal components and the overall operational stability of the unit.
A common challenge with large injection-molded parts is warpage caused by uneven cooling. Due to the large product size and variations in wall thickness, different areas cool at different rates, creating internal stresses that manifest as warpage or dimensional deviations. In addition, sink marks on the housing surface are another frequent issue affecting appearance quality.
To address these challenges, mold design must carefully consider the layout of cooling channels to ensure balanced cooling across all areas of the cavity. Gate placement is equally important—a well-designed gating system reduces melt flow distance and injection pressure, thereby minimizing internal stresses. With scientific mold design combined with optimized injection process parameters, deformation and surface sink marks in large housings can be effectively controlled.
Our company specializes in custom air cooler housing injection molds. With extensive experience in large mold design and manufacturing, we provide reliable mold solutions to our customers, ensuring that the housings produced maintain stable dimensions and meet appearance standards.
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No. 85 Guangshun Street, Xinqian Street, Huangyan District, Taizhou City, Zhejiang