IEC 62552:2015 Automatic Refrigerator Door Tester with PLC Control

IEC 62552:2015 Automatic Refrigerator Door Opening and Closing Tester

Product Information:

The tester is intended for durability testing of vertical freezer doors and can also be used in conjunction with refrigerator energy efficiency tests to simulate door opening/closing cycles. This is a specialized automated test device, ideal for certification bodies, factory laboratories, and other inspection departments.

The system adopts a mature PLC-based intelligent control, featuring adjustable motion actuators, suction cup assemblies for securing onto refrigerator surfaces, and a color LCD touchscreen for parameter input. Users can preset test angle, speed, and door operation timing to realistically simulate manual door opening/closing, achieving intelligent multi-functional control.

Test Principle:

• Door Opening:

The servo motor drives a mechanical arm to pull a rope that moves the suction-cup-mounted door from 0°to 5–15°under controlled motion, after which the door moves freely to the target angle.

• Door Closing:

The servo motor drives the arm with a pressure wheel to push the door from 45°to 35–40°under controlled motion, followed by a free-motion phase until fully closed.

• One complete open-close cycle is defined as a single test cycle.

• 50N Swing Test:

The refrigerator door is first opened to 90°(mechanically limited from the inside). A suction cup is fixed on the door’s outer edge, farthest from the hinge. A weight (connected by a steel wire) is lifted and dropped by a pneumatic cylinder to apply a 50N force, swinging the door beyond 90° to its maximum angle.

The arm then resets the door to 90°, and the impact is repeated 10,000 times.

Mechanical Structure:

As shown in the figures, the equipment features an integrated frame structure. The refrigerator sample is placed on the baseplate to ensure relative motion causes internal stress rather than vibration of the whole machine.

Two vertical columns are mounted on the baseplate (left and right), each containing two door opening/closing mechanisms, as shown in Figure 1, allowing simultaneous testing of refrigerators with up to four doors.

The test sample configuration is shown in Figure 2.

Figure 1

Figure 2

Technical Specifications:

Sinuo is an innovation manufacturing company, specializing in the research and development and sales of laboratory construction and testing equipment for electrical appliances (covering the construction of energy efficiency and performance laboratories, as well as supplementary waterproof testing laboratories, materials flame-retardant laboratories, basic general testing equipment, etc.), Sinuo aims to provide clients with complete laboratory construction, system integration, R&D, rectification and after-sales service, and strive to be the leader of one-stop service for laboratory construction in the field of electrical appliance testing.

Sinuo  products are composed of all kinds of testing equipments as per standards of IEC/ BS/ EN/VDE/UL/ ISO..., such as household appliances testing equipment, energy efficient testing laboratories and comprehensive performance test system for household appliances, battery testing equipment,  automotive testing equipment, luminaries testing equipment,IP code testing equipment, environmental test chamber, flammability test chambers, EMC testing equipment and etc.

Sinuo employees include a highly trained staff of engineers for sales and service, that are committed to offer satisfactory products and prompt service to all home and abroad customers.

Sinuo cooperate with many research institutions and schools to enable our techincal capacities. Sinuo has two own factories, one is in Guangzhou, the other is in Dongguan, and authorized agents and representative offices in Korea, South Africa, Egypt,Pakistan and Philippines.

Sinuo combines all the R/D and production advantages, contributes to provide perfect, high-end and systematic electrical appliance testing laboratory solutions, products and services for corporate customers, universities and third-party laboratories. Our clients include Bureau Veritas, CSA, Intertek, TUV Rehiland, TUV SUD, SGS, etc.