For most users of household appliances, the lower compartment of the refrigerator is simply a place where frozen foods are stored. However, if you look at the technical data sheet or operating instructions, you will find that the usual name “freezer” is rarely used in the documentation. Engineers and manufacturers use more precise terminology to describe the functionality of the assembly. Understanding what is the name of the freezer compartment technically is necessary not only for competent communication with a service specialist, but also for the correct selection of spare parts during repairs.
In a professional environment, this unit is often called low temperature compartment or freezer compartment. It is here that the temperature necessary for long-term frozen storage of food products is maintained. Unlike the main refrigeration compartment, where the temperature is above zero, here the heat exchange processes are set to deep cold. The differences in design can be enormous: from simple static evaporators to complex forced air circulation systems.
Knowing the correct terminology will help you quickly find the information you need in the manual for your model Indesit, Atlant or LG. Users often confuse the chamber itself with the evaporator or condensate drainage system located inside it. To avoid confusion when ordering repairs or searching for diagrams, it is important to clearly separate the concepts of “chamber” (space) and “evaporator” (technical unit). Next, we will analyze in detail the structure of this unit and the nuances of its operation.
Technical names and classification of compartments
In the technical documentation attached to refrigeration equipment, the freezer compartment is most often designated as low-temperature compartment. This definition directly indicates the physical principle of operation of the unit - maintaining the temperature below zero degrees Celsius. Depending on the design of the refrigerator, this compartment can be made in the form of a drawer, a stationary shelf with a door, or a separate cabinet located under the main refrigerator compartment.
There is also the term “freezer cabinet”, which is used when we are talking about a free-standing device intended exclusively for freezing. However, in combined models, where the refrigerator and freezer compartments are combined into one body, the term “compartment” or “chamber” is used. Inside this space there are special shelves and containers, the design of which prevents products from freezing to the metal and makes them easier to access.
⚠️ Attention: When looking for spare parts (for example, a door seal or a plastic tray), be sure to indicate the full model number of your device. The term “freezer compartment” is too general, and parts from the model Bosch may not fit Liebherr even with external similarity.
It is important to distinguish between the concepts of chamber and evaporator. The chamber is a volume limited by the thermal insulation layer and the walls of the housing. The evaporator is part of the refrigeration circuit where the refrigerant boils and absorbs heat. In modern models, the evaporator can be hidden behind the back wall, whereas in old Soviet refrigerators it was often an open metal shelf inside the chamber.
Design features and types of evaporators
The internal structure of the freezer directly depends on the type of cooling system installed. In traditional models operating on a static principle, the role of a cooler is played by a plate cooler. It may be located within the chamber volume itself (often forming a back wall or top shelf) or located behind an external panel. In the first case, you see a metal surface that is periodically covered with a layer of frost. evaporator. It may be located within the chamber volume itself (often forming a back wall or top shelf) or located behind an external panel. In the first case, you see a metal surface that is periodically covered with a layer of frost.
Modern refrigerators with a system No Frost ("without frost") are designed differently. Here the evaporator is placed outside the visible part of the chamber, usually in a special technological compartment. Cooling of products occurs due to the forced circulation of cold air, which is forced by a fan through an air duct system. In such models, the inner surface of the chamber remains dry and clean, since moisture from the air is frozen out on a hidden evaporator and periodically removed by the defrosting system.
The materials used for the inner walls of the chamber also vary. The most commonly used materials are impact-resistant polystyrene or ABS plastic. These materials have low thermal conductivity and are resistant to low temperatures. Metal chambers are less common, mainly in professional equipment, since metal conducts cold faster, but also contributes to faster formation of ice when in contact with humid air.
Why is frost not visible in No Frost?
In No Frost systems, the evaporator is hidden behind a plastic panel. The fan drives dry cold air through the chamber, and moisture settles on a hidden heat exchanger, where it turns into ice, which is then automatically melted by the heater and goes into the drainage.
Particular attention should be paid to the sealing system. The freezer door is equipped with a magnetic seal that ensures tightness. Violation of the tightness leads to a constant influx of warm, moist air, which causes intensive formation of a “fur coat” and overheating of the compressor. Therefore, the condition of the seal is a critical parameter for the efficient operation of the entire unit.
Automatic defrosting systems and their impact on operation
One of the key factors influencing how the freezer is called and classified in a particular model is the presence of an automatic defrosting system. Found in older models and budget options manual defrosting. In such chambers, the user must independently turn off the device and wait until the ice crust melts. This is a labor-intensive process that requires time and freed up space for products.
The system No Frost, which has already been mentioned, has fully automated this process. It includes a timer, heating element (heating element) and temperature sensor. Periodically, the compressor is turned off, the heater is turned on, which melts the ice on the hidden evaporator, and the resulting water flows into a special pan, from where it evaporates naturally. For the user, such a camera is convenient because it does not require intervention for a long time.
There is also a combined system, often called Full No Frost or simply “complete No Frost”. In such refrigerators, both the refrigerator and freezer compartments operate on the principle of forced air circulation. This ensures uniform temperature distribution throughout the entire volume, excluding areas of local overheating or overcooling.
☑️ Signs of a faulty defrosting system
It is important to understand that even in systems with automatic defrosting, a small amount of frost may form when the door is frequently opened or warm products are loaded. This is not a malfunction, but a consequence of the physical processes of moisture condensation from the air in the room.
Temperature designations and stars
On the freezer door or inside it you can always find markings in the form of snowflakes with stars. These symbols are an international standard indicating the shelf life of products. Understanding these symbols is critical for safe food storage. temperature range and shelf life of products. Understanding these symbols is critical to storing food safely.
One star () indicates temperatures down to -6°C. Food can be stored in such a chamber for no more than a week. Two stars () indicate temperatures down to -12°C, which allows you to store food for up to one month. Three stars () corresponds to a temperature of -18°C and a shelf life of up to 3 months (standard for most modern refrigerators).
| Symbol | Temperature | Shelf life | Frozen ability |
|---|---|---|---|
| * | up to -6°C | 1 week | No |
| ** | up to -12°C | 1 month | No |
| *** | up to -18°C | 3 months | Yes (in small portions) |
| **** | up to -24°C and below | up to 1 year | Yes (quick freezing) |
The presence of four stars (****) indicates that the chamber is equipped with a quick freezing function and is capable of maintaining a temperature of -24°C and below. This allows you to freeze fresh foods quickly, preserving their structure and nutrients, since small ice crystals are formed that do not destroy the cells of the product.
Common faults and their symptoms
During operation, the freezer may encounter a number of typical problems. One of the most common is excessive icing. If the layer of ice on the walls or door becomes too thick, this may indicate a loose seal, a faulty defrost sensor, or a clogged drain hole. In No Frost systems, ice should not appear in the visible part of the chamber.
Another common problem is insufficient cooling. Products may begin to thaw if there is a refrigerant leak, a compressor fails, or a fan is jammed (in systems with forced circulation). In such cases, an unusual noise is often heard or, conversely, silence occurs where there should be a working hum of the motor.
⚠️ Attention: If you notice that the back wall of the freezer is swollen or deformed, immediately unplug the appliance. This may indicate a serious violation of thermal insulation or problems with internal pressure, which requires the intervention of a qualified technician.
Foreign odors can also be a signal of problems. If the freezer smells like spoiled food even after defrosting, bacteria may have entered hard-to-reach places, such as the air duct system or under access panels. In this case, careful sanitary treatment of the entire internal volume is required.
Rules for operating and caring for the chamber
To extend the service life of the freezer, you must follow a number of operating rules. First of all, this concerns loading with products. Do not fill the chamber to capacity immediately after switching on or defrosting. Allow the appliance to reach temperature before loading the food. It is also important not to place hot or warm food inside, as this creates excess stress on compressor and leads to the formation of condensation.
Regular cleaning is the key to hygiene and efficient operation. Even in No Frost systems, it is recommended to carry out preventive cleaning and disinfection at least once a year. For washing, use special household appliance products or a weak soda solution. Aggressive chemicals can damage the plastic or rubber seal.
When defrosting (if the model requires it), it is strictly forbidden to use sharp objects to chip ice. One wrong blow with a knife or screwdriver can puncture the evaporator, leading to a freon leak and costly repairs. Defrosting should only be done naturally or using a hairdryer at a safe distance, if the manufacturer's instructions allow such a method.
Following these simple recommendations will allow your the freezer will work effectively for many years, keeping food fresh and safe for health.
Is it possible to transport the freezer lying down?
Transporting the refrigerator lying down is highly undesirable. Oil from the compressor may leak into the refrigerant circuit, causing the capillary tube to become clogged and break down. If transportation in a horizontal position is unavoidable, after installation the appliance must stand vertically for at least 12-24 hours before turning it on.
Why is the freezer humming a lot?
The humming can be caused by vibration of the compressor, improper installation (the refrigerator touches the wall) or a fan malfunction in No Frost systems. If the buzzing appears suddenly and is accompanied by other symptoms, diagnostics is required.
What temperature is considered normal for a freezer?
The optimal temperature for long-term storage of most products is considered to be -18°C. For short-term storage or the quick freeze function, the temperature can drop to -24°C.