Air conditioning and refrigeration accessories

1. Location: Install it at a key location in the refrigeration cycle (after the condenser and before the throttling device).
2. Structure: A sealed container containing a desiccant and filter/filter media.
3. Core Function (Dual Function):
Drying (Dehumidification): Utilizes an internal desiccant (such as molecular sieve, silica gel, etc.) to strongly adsorb moisture (H₂O) from the refrigerant. This is key to preventing “ice blockage” (water freezing at the capillary outlet at low temperatures, causing blockage).
Filtration: Utilizes an internal metal filter (typically 100-200 mesh) or porous media such as sintered metal/ceramic to intercept and capture solid particulate impurities in the refrigerant. These impurities may include:
Weld slag, metal debris, and oxides left over from system manufacturing, installation, or maintenance.
Minor metal wear particles generated during compressor operation.
Impurities shed from the inner wall of the pipe.
Potassium powder produced by the desiccant or sealing material (common in inferior products). 4. Core Purpose (Protecting the System):
Protecting the compressor: Preventing impurities from entering the compressor and scratching precision components such as the cylinder wall, piston, and bearings, thereby preventing wear, seizure, or burnout. Preventing moisture from chemically reacting with the refrigerant and refrigeration oil to generate acidic substances that could corrode the motor windings and components