A laundry dryer with a heat pump system

The patent applies the dynamics principle by making the expansion means adjustable rather than fixed. The expansion means can be dynamically adapted to match different compressor rotational speeds, allowing the system to optimize refrigerant flow conditions for each operating state. This resolves the contradiction by enabling the expansion means to provide appropriate pressure drop at each speed, maintaining refrigerant density and mass flow rate increase even at high compressor speeds.

The patent applies parameter changes by varying the geometric properties of the expansion means (such as opening area, passage cross-section, or length) to match different operating conditions. By changing these geometric parameters according to compressor speed, the system optimizes the pressure drop characteristics to maintain efficient refrigerant flow and density across different operating states, preventing energy loss while achieving faster drying.

The patent transforms the static capillary tube into a dynamic expansion means that can adjust its characteristics based on operating conditions. This is achieved through mechanisms such as variable opening valves, adjustable passage cross-sections, or movable components that modify the expansion geometry in response to pressure and flow rate changes, thereby providing adaptability without excessive complexity.

The patent designs the expansion means to serve multiple functions: it acts as both a pressure reduction device and a flow control element that adapts to different operating conditions. By integrating these functions into a single adjustable component rather than separate fixed elements, the system achieves versatility while managing device complexity efficiently.

The patent applies dynamics by enabling the expansion means to change its characteristics in response to compressor speed variations. At low speeds, the expansion means maintains optimized lamination work for reliable operation, while at high speeds, it automatically adjusts to reduce pressure drop and maintain performance. This dynamic adaptation ensures both low-speed reliability and high-speed productivity.

The patent uses parameter changes to adjust the geometric properties of the expansion means based on compressor operating speed. By varying parameters such as opening area, passage dimensions, or length according to speed conditions, the system maintains optimal pressure drop characteristics across the full operating range, ensuring reliable low-speed performance and high-speed productivity simultaneously.