A modern refrigerator is a complex unit that not only cools food, but also creates an optimal microclimate for them. One of the key functions that ensures freshness is the system for neutralizing foreign odors. This is where deodorizer comes into the picture - a device designed to destroy odors at the molecular level, and not just mask them. Many users confuse this element with a regular absorber, but their operating principle is fundamentally different.
Understanding how this system works will help you properly maintain your equipment and avoid common mistakes. If your refrigerator has a persistent unpleasant odor that does not disappear after washing, the problem may lie in a malfunction or depletion of the resource of this component. In this article we will analyze in detail the design, types and operating features of air purification systems.
Principle of operation and difference from an absorber
The main difference deodorizer from a simple odor absorber is its active participation in the chemical process. If the absorber (most often it is activated carbon) works on the principle of adsorption, that is, it absorbs odor molecules into its porous structure, then the deodorizer destroys them. This occurs thanks to active components such as silver ions, ultraviolet radiation or special catalytic filters.
In some models of equipment, for example, from brands LG or Samusung, systems with ion generation are used. They react with volatile compounds that cause odor and break them down into harmless water and carbon dioxide. This makes the air purification process more efficient and durable. A conventional carbon filter becomes saturated over time and stops working, while catalytic deodorizer can last much longer without losing efficiency.
Can an absorber be used instead of a deodorizer?
In most cases, no. If the design of the refrigerator provides for the installation of an active deodorizer with a UV lamp or ionizer, simply replacing it with a coal briquette will not give the desired effect. The system may not work correctly or may not turn on at all, since the electronics do not recognize the required type of filter.
It is important to understand that operating efficiency depends on air circulation. In systems No Frost air is constantly forced through the evaporator, where the filter element is often located. This ensures quick cleaning of the entire chamber volume. In static systems where there is no forced circulation, deodorizers work locally and require more time to neutralize odors.
Main types of deodorizers in refrigeration equipment
Manufacturers of household appliances use various technologies to ensure clean air inside the chambers. The choice of a specific type depends on the price segment of the model and brand positioning. On the market you can find several main types of devices, each of which has its own operating characteristics.
The first type is carbon deodorizers. Even though we call them deodorizers, they are often advanced absorbents with added antimicrobial ingredients. They are cheap to produce but require frequent replacement. The second type is photocatalytic systems. They use an ultraviolet lamp and a special coating (usually titanium dioxide), which, under the influence of light, triggers the oxidation reaction of organic contaminants.
- 🔹 Ionizers: generate negatively charged ions that precipitate dust and neutralize odors, often found in premium models.
- 🔹 Silver filters: contain silver ions, which have a powerful antibacterial effect, prevent the growth of mold.
- 🔹 Ozone generators: produce ozone in microdoses, which oxidizes organics, but require caution due to the toxicity of ozone in high concentrations.
Systems with nano-coateddeserve special attention. They do not require replacement of consumables during the entire service life of the refrigerator. The principle of their operation is based on a catalytic reaction occurring on the surface of a special mesh. However, such systems are less effective against very strong and pungent odors, such as spilled milk or spoiled fish, compared to active generators.
Where the deodorizer is located and how to find it
The location of the air purification element varies depending on the design of the refrigerator compartment. In most modern models with a system No Frost the deodorizer is located directly in the air flow circulation area. Most often, this is the back wall of the refrigerator compartment or a unit located behind the decorative panel.
If you have a model with one compressor and a weeping evaporator, the deodorizer can be built into a plastic housing on the side wall or located in the form of a separate removable cartridge. In some cases, for example, a brand Bosch or Siemens, this may be a small box with perforations, mounted on a shelf or in a special compartment of the door.
⚠️ Attention: Before searching for and removing the deodorizer, be sure to disconnect the refrigerator from the power supply. Working with live internal components of an electrical appliance is prohibited by safety regulations.
To determine the exact location in your specific model, it is best to refer to the instruction manual. There is usually a diagram of the internals with the part number. If the documentation is lost, you can try to find information by searching for “refrigerator diagram [model] deodorizer” on the Internet. Manufacturers often place these elements in easily accessible places for ease of replacement.
Service life and signs of the need for replacement
Any filter element has a limited resource. Even the most advanced ones photocatalytic systems over time lose their effectiveness. The lamps dim, the catalytic coating burns out or becomes clogged with a greasy film, and the coal briquettes are completely saturated with adsorbed substances.
The average service life of coal deodorizers is from 6 to 12 months. Photocatalytic elements can last up to 2-3 years, but this depends on the intensity of use of the refrigerator. If you often store products with a strong smell (fish, spices, smoked meats), the resource is used up faster.
How do you know when it’s time to change the filter? There are several obvious signs:
- 🕰️ The service life has expired: more than a year has passed since the installation or purchase of the refrigerator.
- 👃 Persistent odor: an unpleasant odor has appeared inside the chamber, which does not disappear after general cleaning.
- 🍞 Transmission of tastes: products begin to absorb foreign odors, for example, oil smells like fish, and milk smells like onions.
Some modern models are equipped with a filter replacement indicator. The corresponding icon may light up on the display or the light may flash. If there is no such function, it is recommended to keep your own records or set a reminder in the smartphone calendar immediately after replacing the element.
Instructions for replacing the deodorizer
The process of replacing the filter element usually does not require special tools and skills. In most cases, it is enough to open the refrigerator door and remove the old unit. However, it is important to follow the sequence of actions so as not to damage the plastic fasteners.
First you need to find the element itself. As a rule, it is removed by moving it towards you or turning it counterclockwise. In some models, for example Electrolux, you may need to remove the protective grille on the rear wall. Be careful with plastic, as at low temperatures it becomes brittle and can crack if handled carelessly.
☑️ Algorithm for replacing the deodorizer
After installing the new deodorizer, it is recommended to let the refrigerator run idle for within 2-3 hours. This will allow the system to enter operating mode and start active air purification. If a carbon filter is used, sometimes it is necessary to remove the protective film from it before installation, if one is included.
Homemade deodorizers: effectiveness and risks
Many users ask the question: is it possible to make a deodorizer with your own hands? Indeed, there are many folk recipes, from activated carbon in a fabric bag to soda and vinegar. However, it is worth distinguishing between the concepts of “deodorizer” and “absorber”. It is almost impossible to create a full-fledged active deodorizer at home.
Home remedies work exclusively as adsorbents. They can absorb some odors, but do not destroy them chemically. In addition, the efficiency of homemade structures is significantly lower than their factory counterparts. For example, charcoal poured into a bowl will begin to work only in direct contact with the air flow, which does not happen in a static refrigerator.
| Type of product | Principle of action | Efficiency | Validity period |
|---|---|---|---|
| Activated carbon | Adsorption (absorption) | Average | 1-2 months |
| Baking soda | Neutralization acids | Low | 2-3 weeks |
| Factory deodorizer | Catalysis / Ionization | High | 1-3 year |
| Citrus peel | Odor masking | Temporary | 3-5 days |
The use of homemade products may be justified as a temporary measure if the original filter is burnt out or not on sale. However, you should not rely on them as a full-fledged replacement. Moreover, the use of liquid or bulk substances without reliable sealing can lead to contamination of the internal channels of the refrigerator.
Caring for the air purification system
In order for the deodorizer to serve as long as possible, it is necessary to properly care not only for it, but also for the refrigerator itself. Dirt, dust and grease on the chamber walls can block air flow to the filter, reducing its effectiveness. Regular washing of internal surfaces is the key to long-term operation of the system.
Do not store food in open containers. Even the most powerful deodorizer cannot cope with the smell of open herring or onions if they are lying on the shelf without packaging. The use of sealed containers reduces the load on the cleaning system significantly. You should also avoid splashing grease directly onto the filter housing if it is located in the access area.
⚠️ Attention: Do not try to wash disposable carbon filters with water. After getting wet, charcoal loses its properties, and when it dries, it can begin to release accumulated odors back into the chamber.
If you use reusable systems with the ability to regenerate (for example, calcining a charcoal filter in the oven, if permitted by the instructions), do this strictly according to the regulations. However, for most modern cartridges, the only way to restore functionality is a complete replacement with a new original element.
How often do you need to change the deodorizer in a Samsung refrigerator?
In Samsung refrigerators with the Deodorizer system, it is recommended to replace the carbon filter every 12 months. However, for intensive use or storage of products with strong odors, the interval can be reduced to 6 months. For photocatalytic systems (if provided by the model), the period can reach 2-3 years.
Can the deodorizer be washed?
Only special reusable filters made of fabric with carbon chips can be washed, if the manufacturer has explicitly indicated this possibility. It is strictly forbidden to wash standard plastic cartridges with carbon tablets or chemical reagents - this will render them unusable.
What to do if the smell remains after replacing the deodorizer?
If replacing the filter did not help, the problem may be deeper. Check the drain hole on the back wall - it often gets clogged and is a source of odors. It is also worth defrosting the refrigerator (if it is not No Frost) and thoroughly washing all hard-to-reach places, including rubber door seals.
Is ozone produced by a deodorizer harmful?
In household refrigerators, the concentration of ozone, if it is produced, is minimal and safe for humans when the door is closed. When the door is opened, the gas quickly dissipates. However, people with hypersensitivity or asthma are advised to avoid prolonged inhalation of air immediately after opening the chamber if an active ozonizer is used.