Product Overview
The IEC 60335-2-24 Annex BB Water Vapor Evaporation Device (Model: ZLT-WF) is a specialized testing tool developed for frost accumulation testing of electric appliances, particularly those with cooling functions. It adheres strictly to IEC60335-2-24 clause 11.102 and Annex BB.1 & BB.2, ensuring that appliance manufacturers can validate frost buildup performance in compliance with international safety and performance standards.
The device’s core structure includes a block enclosure made of thermally insulating material (to minimize heat loss), a vertical central hole housing a lamp (for generating controlled heat), an evaporating dish (with a high thermal conductivity base and low thermal conductivity walls), and a 4W power adapter (for powering the lamp). This design simulates real-world conditions where frost accumulates on cooling components (e.g., refrigerator evaporators), allowing testers to measure frost buildup rate and appliance defrosting efficiency.
Technical Parameters
Parameter | Specification |
Model | ZLT-WF |
Primary Purpose | Frost accumulation testing for cooling-related electric appliances |
Compliant Standards | IEC60335-2-24 clause 11.102, IEC60335-2-24 Annex BB.1 & BB.2 |
Power Adapter | 4W (for powering the internal lamp) |
Evaporating Dish Dimensions | Top Diameter: ø70 mm; Bottom Diameter: ø37 mm; Height: 55 mm |
Enclosure Key Dimensions | Height: 145 mm; Critical Insulation Thickness: 40 mm |
Evaporating Dish Base Material | Copper plate (high thermal conductivity) |
Enclosure Material | Thermally insulating material (reduces external heat interference) |
Core Components | Insulating enclosure, internal lamp, evaporating dish, 4W power adapter |
Product Features
Optimized Thermal Insulation Design
The device’s enclosure is crafted from high-performance thermally insulating material, which minimizes heat exchange between the internal test environment and the external surroundings. This ensures that the lamp’s heat is focused on the evaporating dish, creating a stable, repeatable environment for frost accumulation—critical for accurate test results.
High-Conductivity Evaporating Dish
The evaporating dish features a copper plate base (high thermal conductivity) and low thermal conductivity walls. The copper base efficiently transfers heat from the lamp to the water in the dish, promoting consistent evaporation, while the insulated walls prevent heat loss from the sides. This design aligns with IEC60335-2-24 Annex BB.1, ensuring compliance with standard requirements.
All-In-One, Ready-to-Use Kit
The ZLT-WF comes as a complete package, including the water vapor evaporation device, the internal lamp, and a 4W power adapter. Users do not need to source additional components, reducing setup time and ensuring compatibility between parts (e.g., the lamp and adapter are pre-calibrated for optimal performance).
Standard-Aligned Configuration
Every detail of the device—from the evaporating dish dimensions (ø70 mm/ø37 mm/55 mm) to the enclosure height (145 mm)—is designed to match the specifications in IEC60335-2-24 Annex BB.1 & BB.2. This eliminates discrepancies between test setups and standard requirements, ensuring test results are valid for regulatory compliance.
Application
Frost Accumulation Testing in Refrigeration Appliances
Household Refrigerators & Freezers: Tests frost buildup on evaporators, which helps manufacturers optimize defrost cycles (e.g., determining how often defrost heaters need to activate to prevent excessive frost).
Commercial Refrigeration Units: Validates frost performance in display fridges, walk-in freezers, and beverage coolers, ensuring consistent cooling efficiency and reducing energy waste from frost blockages.
Performance Validation for Cooling Components
Air Conditioner Evaporators: Tests frost accumulation in window-type or split-type AC evaporators (critical for cold-climate regions where frost can reduce airflow and cooling capacity).
Dehumidifier Cooling Coils: Ensures dehumidifiers maintain performance by measuring frost buildup on cooling coils, which can otherwise impair moisture removal.
Regulatory Compliance Testing
For appliance manufacturers seeking CE, CB, or other international certifications, the ZLT-WF provides the required frost accumulation data to demonstrate compliance with IEC60335-2-24, a key standard for cooling appliance safety and performance.
FAQ
What is the main function of the ZLT-WF Water Vapor Evaporation Device?
The primary function of the ZLT-WF is to simulate frost accumulation conditions for cooling-related electric appliances (e.g., refrigerators, air conditioners) in compliance with IEC60335-2-24. It helps test how frost builds up on cooling components and validate the effectiveness of defrost systems.
What power adapter is included with the device?
The device comes with a 4W power adapter specifically designed to power the internal lamp. This adapter is pre-calibrated to ensure the lamp generates the correct heat output for standard-compliant testing.
What material is used for the evaporating dish’s base?
The evaporating dish’s base is made of a copper plate, which offers high thermal conductivity. This material efficiently transfers heat from the lamp to the water in the dish, ensuring consistent water evaporation and frost formation.
Does the device comply with specific clauses of IEC 60335-2-24?
Yes. It fully complies with IEC60335-2-24 clause 11.102 (which outlines frost accumulation test requirements) and IEC60335-2-24 Annex BB.1 & BB.2 (which specifies the device’s design and dimensions).
Can the device be used for non-refrigeration appliances?
The ZLT-WF is specifically designed for appliances with cooling components (e.g., refrigerators, ACs, dehumidifiers) that require frost accumulation testing. It is not recommended for non-cooling appliances, as their test requirements differ from IEC60335-2-24.
