Refrigerator Frost & Defrost Test Apparatus for Defrosting Time and Water Evaporation Testing | IEC 62552 Compliant Home Appliance Testing Equipment

Refrigerator Frost & Defrost Test Apparatus for Defrosting Time and Water Evaporation Testing | IEC 62552 Compliant Home Appliance Testing Equipment

Product Introduction

Anyone who has ever opened a refrigerator with frost knows that a thin layer of ice quickly becomes an inconvenience in daily life. For refrigerator engineers, frost isn't just an inconvenience, but a quantifiable quality issue. How long does it take for the refrigerator compartments to defrost? How quickly does the melted water evaporate? Does the water drain smoothly, or does it accumulate and refreeze?

Before a new refrigerator hits the market, refrigerator performance labs must repeatedly answer these questions. This is precisely the initial motivation behind the development of the HeJin Defrost Tester.

This device creates a small, controllable testing platform that simulates the frost and condensation conditions encountered in a refrigerator's cooling compartment during normal use and defrost cycles.

It can be used to verify defrost time and water evaporation—two indicators that directly affect the refrigerator's energy efficiency, food freshness, and user satisfaction.

Because HeJin is the manufacturer, the defrost test unit can be customized to your specific testing methods, compartment layout, and fixture requirements, eliminating the need for your lab to use a fixed, off-the-shelf design.

Why This Test Matters?

• Defrosting time is user time.
  A refrigerator that defrosts slowly keeps its compressor working longer, uses more energy, and makes food storage less stable. Measuring defrosting time objectively helps engineers shorten it.
• Water evaporation affects hygiene.
  Melt water that lingers in a compartment can lead to odours and bacterial growth. Knowing how fast water evaporates helps designers improve drainage and evaporation trays.
• Standards are raising the bar.
  With updated refrigerator test standards and new fresh-keeping requirements, laboratories need equipment that produces consistent, auditable numbers — not estimates.
• It protects the brand you ship.
  A refrigerator that frosts badly in the laboratory will frost badly in someone's kitchen. That is why responsible manufacturers test before they ship.

Product Features

1. Copper Heatsink Plate – Ensures uniform and rapid heat conduction on the test surface, resulting in stable and repeatable test conditions.
2. 5W Incandescent Lamp Heating Source – A simple, low-cost, and easily replaceable heating element, avoiding complex wiring and reducing maintenance burden.
3. 5-220V Continuously Adjustable Input – Operators can adjust the surface temperature according to the required test conditions, suitable for everything from slight condensation to severe frosting.
4. Digital Power Consumption Display – Operators can monitor the heating load at any time, ensuring consistency in test settings.
5. Direct Manufacturer Support – Hejin Company is responsible for the design, manufacturing, and support of the equipment; therefore, spare parts, service, and consultation all come from the same manufacturing team.

International Reference Standards

IEC 62552 — Household refrigerating appliances — Characteristics and test methods

The most important international standard series for the performance and testing of household refrigerating appliances (covering general requirements, performance, energy consumption and volume).

IEC 63169:2020 — Refrigerator fresh-keeping performance

The world's first international standard for refrigerator fresh-keeping performance, specifying test methods for two key indicators: weight-loss rate and condensation.

IEC 60335-2-24 / GB 4706.13 — Safety of household refrigerating appliances

The safety standard for refrigerating appliances specifies safety requirements during normal use, including construction, insulation protection and material heat resistance. It is the safety basis run in parallel with performance testing during type testing and certification. This equipment is used under controlled test conditions in support of such sample assessment within the safety standard framework.

Technical Specifications

Test Objects

• Fresh-food (refrigerator) compartments of household refrigerators
• Defrosting systems and defrost-water evaporation trays of frost-free (no-frost) refrigerators
• Simulation of frost formation/defrosting on the evaporator surfaces of direct-cooled refrigerators
• Defrosting performance of commercial refrigerated display cabinets and small freezers
• Defrost-water collection and evaporation structures of refrigeration appliances
• Other refrigeration products that need to be assessed for defrosting time and water evaporation under controlled temperature/water conditions

Product Uses

• Performance laboratories of refrigerator manufacturers — evaluating defrosting time and water evaporation of the fresh-food compartment during the R&D phase to guide design improvements.
• Type testing and quality control of refrigeration appliances — providing objective defrosting and water-evaporation data for new-model qualification, outgoing inspection and incoming inspection.
• Third-party testing and certification bodies— supporting performance tests organized in accordance with IEC 62552, GB/T 8059 and related standards.
• Universities and research institutions — used in teaching and research related to refrigeration, heat transfer and fresh-keeping.
• Supervision and random inspection of household appliance quality — serving as an auxiliary test device for defrosting/condensation related indicators of refrigerators.

Product detail images

FAQ

1. What does this equipment do?
   It evaluates the defrosting time and water evaporation of the fresh-food compartment of refrigerators and similar refrigeration appliances. It is a controlled frost/condensation simulation and quantitative evaluation test-support device.
2. What external items are required?
   A digital electronic balance (customer-supplied) for weighing the water consumed during the test. Everything else — the red copper plate, 5 W incandescent lamp, adjustable power supply, digital power display and water injection mechanism — is provided with the equipment.
3. Why use an incandescent lamp instead of a heating wire?
   The incandescent lamp is simple, low-cost and easily replaceable. Combined with the adjustable 5–220 V input, it smoothly controls the surface temperature with a low maintenance burden, ideal for daily repeated laboratory use.
4. What is the purpose of the adjustable 5–220 V input?
   It adjusts the heating intensity to control the surface temperature of the copper plate, matching the frost/condensation or defrosting conditions required by different test methods.
5. How is water evaporation quantified?
   The water consumed during the test is weighed and recorded by the digital electronic balance. Combined with time, this provides the water-evaporation rate and effect.

About HeJin

HeJin is a China-based manufacturer specializing in industrial testing equipment and automated inspection solutions.

Since its establishment in 2012, the company has integrated R&D, engineering design, manufacturing, sales and technical service. Its product portfolio covers automotive parts test equipment, leak testing equipment, environmental test chambers, IP protection test equipment, mechanical strength test equipment, automatic brazing equipment and household appliance performance test equipment.

For HeJin, test equipment is not just a machine — it is a tool that helps customers keep quality in their own hands. From the first technical conversation to delivery, commissioning and long-term after-sales support, our goal has always been simple and steady: make the testing process easier to control and easier to trust.