The design of washing machine doors, particularly the glass doors, is not standardized, and different manufacturers may use varying designs. However, there are several reasons why the glass doors of washing machines might extend inward and not be flat like dryer doors:
Drum size and shape: The washing machine drum is typically positioned horizontally, and its shape is usually cylindrical. The drum's curvature and position may influence the shape and size of the door to ensure a secure fit and proper sealing when closed.
Water-tight seal: Washing machines need to maintain a water-tight seal during operation to prevent water leakage. A slightly inwardly extending door can help create a better seal between the door and the drum, reducing the risk of water leaking out during the wash cycle.
Reinforcement and stability: The door design might include extra reinforcement or structure that extends inward to ensure the door remains stable during the wash cycle, especially when the drum is spinning at high speeds.
User safety: Having a slightly inwardly extending door might reduce the risk of accidental opening during the wash cycle, minimizing potential hazards.
Aesthetics and branding: Manufacturers often consider the overall appearance and branding of their appliances. The design of the door may be chosen to create a distinctive look or a uniform appearance with other models from the same brand.
While it's true that a flat door might provide more surface area for the drum, the design of washing machine doors is a result of various considerations, including functionality, safety, and aesthetics. Washing machine manufacturers aim to strike a balance between these factors to create a product that meets customer needs and preferences.