IEC 60335-2-24 Frost Accumulation Water Evaporation Tester

The LS-B65 Water Vapor Evaporation and Frosting Test Apparatus is a professional testing device specifically designed for evaluating the performance of defrosting systems in refrigeration appliances. It employs a controlled water evaporation method to precisely generate a frost layer in a standardized environment, simulating the frosting and condensation scenarios encountered during actual use of refrigeration appliances, thereby scientifically testing the effectiveness of the defrosting system. Through optimized structural design and energy control mechanisms, the device ensures a stable water evaporation process without additional heat interference. Coupled with a precise water supply and positioning system, it can adapt to the testing needs of different types of refrigeration appliances. The equipment records key test data, providing strong support for compliance verification. Its standardized operating procedures and reliable results help users comprehensively control the defrosting performance of refrigeration appliances, ensuring the stability and safety of products during use.

Standards:

Specifications:

1. Frost Generation System
•  Heat Source：Built-in controllable heat source (precise power adjustment) to evaporate measured water, minimizing extraneous heat loss to the appliance cabinet.
•  Structure：Integrates a thermal-insulating block enclosure (as per IEC 60335-2-24 Figure BB.1/BB.2 design) with a vertical central hole. Equipped with a high-thermal-conductivity evaporating dish base + low-thermal-conductivity walls, ensuring stable evaporation conditions.

2. Installation & Operation
•  Positioning：Designed for mounting at the geometric center of the refrigerating appliance cabinet. Supports external electrical connection for voltage adjustment and power measurement with the cabinet door closed.
•  Water Supply：Configured with a small-bore tube for interval-based water injection (no continuous flow required). Automatically calculates water volume based on cabinet gross volume (follows “2 g water per liter per week” standard rate).

3. Performance Parameters
•  Evaporation Rate：Max ~2 g/h (at 4 W input, water at cabinet temperature), meeting standard test efficiency.
•  Adjustability：Adapts to different defrost intervals (e.g., for a 140 L cabinet with twice-weekly defrost, supplies 140 g water as per IEC 60335-2-24 Annex BB NOTE).

4. Safety & Precision
•  Energy Control：Ensures complete water evaporation without excessive energy input, avoiding cabinet overheating.
•  Data Traceability：Records power, water volume, and evaporation time for compliance documentation.

IEC 60335-2-24 Figure BB.1

IEC 60335-2-24 Figure BB.2