Refrigerators "Biryusa" are legendary domestic units that have taken pride of place in the kitchens of millions of Russians since the 1960s. They are valued for their reliability, ease of repair and ability to work in harsh conditions - from Siberian frosts to the heat of the southern regions. But what is hidden under the steel casing of these “indestructible” refrigerators? What materials and components are they assembled from modern models, and how do they differ from Soviet analogues?
In this article we will analyze in detail the design of Biryusa refrigerators - from the outer covering to the internal components. You will learn what metals are used for the body, why plastic is used in some models, how thermal insulation works, and which compressors ensure long service. We will pay special attention to a unique feature of the Biryusa - a modular assembly system that allows you to replace parts without completely disassembling the unit.
The material will be useful to those who are planning a purchase, repair or just wants to understand why these refrigerators last 20-30 years. And if you are already the owner “Turks”, you will be able to better understand its “stuffing” - this will be useful for independent care or troubleshooting.
Is the refrigerator body: steel, plastic or aluminum?
The external frame is the “face” refrigerator, but its function is not only aesthetic. The housing must withstand mechanical loads and protect internal components from moisture and temperature changes. In "Biryusa" they use a combination of materials, which depends on model and year of manufacture..
The main material for most modern refrigerators of the brand is steel sheet with a thickness of 0.6–0.8 mm. It is coated with a layer of zinc (galvanizing) or powder paint is applied to protect it from corrosion. For example, models Biryusa-130 and Biryusa-140 use cold-rolled steel with an anti-corrosion coating that can withstand even aggressive detergents. But in budget series (for example, Biryusa-50) you can find a case made of ABS plastic - it is lighter, but less resistant to scratches.
Interesting fact: in Soviet times, the body "Turks" was made of thicker steel (up to 1 mm), which made refrigerators heavier, but also stronger. Today, the manufacturer has optimized the weight, but retained the rigidity of the structure due to stiffening ribs - special stampings on the back wall.
- 🔹 Galvanized steel - used in premium models, resistant to rust, but more expensive.
- 🔹 Powder paint —applied to steel using the electrostatic method, protects against chipping and UV rays.
- 🔹 ABS plastic —light and cheap, but less durable (found in compact models).
- 🔹 Aluminum inserts — used for fastening the compressor and condenser (rarely, mainly in older models).
⚠️ Attention: If you notice rust on the body of the refrigerator "Biryusa", do not try to clean it with sandpaper - this will damage the protective layer. It is better to use special anti-corrosion compounds for household appliances or contact a service center.
Thermal insulation: why Biryusa holds the cold better than many
The quality of thermal insulation directly affects energy efficiency refrigerator and its ability to maintain a stable temperature. In "Biryuse" they use two types of insulation, which are combined depending on the model:
- Polyurethane foam (PPU) is the most common material. It is foamed between the inner and outer walls of the housing under high pressure. Polyurethane foam has low thermal conductivity (0.02–0.03 W/m K) and serves for decades without loss of properties. For example, in models Biryusa-132 i Biryusa-220 the thickness of the PPU layer reaches 60–80 mm.
- Expanded polystyrene (foam plastic) is a cheap alternative that is used in budget refrigerators (for example, Biryusa-50M). It is less efficient (thermal conductivity 0.035–0.04 W/m K), but lighter and cheaper to produce.
Important detail: in "Biryusa" is used freon-free foaming technology, which makes the process more environmentally friendly. But in older models (before the 2000s) they could use freon as a foaming agent - this worsened the thermal insulation properties over time.
| Material | Thermal conductivity (W/m K) | Layer thickness in Biryusa (mm) | Service life |
|---|---|---|---|
| Polyurethane foam (PPU) | 0,02–0,03 | 50–80 | 25+ years |
| Expanded polystyrene | 0,035–0,04 | 40–60 | 15–20 years |
| Mineral wool (in old models) | 0,04–0,05 | 70–100 | 10–15 years (shrinks over time) |
Please note: if the refrigerator "Biryusa" has become worse at keeping the cold, the problem may not be in the insulation, but in door seal or refrigerant circulation system. Polyurethane foam practically does not lose its properties over time, if there has been no mechanical damage to the case.
Compressor: the “heart” of the refrigerator and its features
The compressor is the main operating unit that circulates the refrigerant and maintains a low temperature. In "Biryusa" several types of compressors are used, and their choice depends on the model and year of manufacture:
- 🔧 Piston compressors is the classic version that is installed in most models (for example, Biryusa-130, Biryusa-220). They are reliable, repairable, but noisier than inverter ones. Produced at Russian factories (for example, Danfoss or Atlant under license).
- 🔧 Inverter compressors - found in new series (for example, Biryusa-510). They are more economical (consume 20–30% less electricity), quieter, but more expensive to repair. Manufactured in China or Korea (brands Secop, LG).
- 🔧 Linear compressors - rare for "Biryusy", but they can be found in experimental batches. They are even more economical, but sensitive to changes voltage.
Feature "Biryusa" - use oil compressors, where special refrigeration oil is used for lubrication (for example, Mobil EAL Arctic 32). This extends service life, but requires periodic checking of the oil level (on average every 5-7 years). In older models (before the 2000s), R12 freon could be used, and in new ones, ozone-safe refrigerants R134a or R600a (isobutane).
If the compressor begins to hum more than usual or switches off after short periods of time, this may indicate:
- 🛠️ Lack of oil (refilling required).
- 🛠️ Clogged capillary tube (needs cleaning or replacement).
- 🛠️ Wear of the piston group (in this case, the compressor must be replaced).
⚠️ Attention: If the refrigerator "Biryusa" with a piston compressor began to vibrate strongly, check the fastenings - they could weaken. In inverter models, vibration is often associated with a malfunction of the control board, and here you can’t do without a technician.
How to check the operation of the compressor without tools?
Touch the housing compressor (it is located at the bottom of the refrigerator). If it is hot but hums evenly, everything is fine. If it's cold and won't turn on, check the thermostat or relay. If the compressor “clicks” but does not start, most likely the winding is burned out or the piston is jammed.
Evaporator and condenser: how the cooling system works
The cooling system "Biryusy" is built according to the classical scheme: compressor → condenser → capillary tube → evaporator. But there are nuances that distinguish these refrigerators from their foreign analogues.
Evaporator in most models it is made of aluminum alloy (for example, AD31) and is located inside the camera. It can be:
- 🍃 Plate —in older models (for example, Biryusa-3). Such an evaporator quickly freezes and requires frequent defrosting.
- 🍃 Tubular - in modern refrigerators (for example, Biryusa-140). More effective, less likely to be covered with ice.
- 🍃 Hidden —in models with the system No Frost (for example, Biryusa-220NF). The evaporator is hidden behind the back wall, which simplifies maintenance.
Condenser usually made of copper tubes with aluminum fins (for better heat transfer). Budget models can use steel tubes, but this impairs heat transfer. The condenser is located on the back wall of the refrigerator and requires regular cleaning from dust - otherwise the compressor will overheat.
In models with No Frost additionally installed fan for forced air circulation. It is made of plastic and has protection against moisture, but over time it can fail due to icing. In this case, replacement or defrosting of the system is required.
| Element | Material | Features in Biryusa | Typical malfunctions |
|---|---|---|---|
| Evaporator | Aluminum, copper | In old models - plate, in new ones - tubular | Freezing, corrosion, freon leakage |
| Condenser | Copper + aluminum fins | Located at the back, requires cleaning | Clogged, mechanical damage |
| Capillary tube | Copper | Diameter 0.6–0.8 mm, length up to 3 m | Clog, bend, leak |
Door seal: why is it so important
It would seem that there is something special about a rubber seal? But it depends on its condition how well the refrigerator will be retain cold i save energy. In "Biryusa" they use seals from:
- 🔘 EPDM rubber is the most common option. Resistant to temperature changes, does not tan in the cold, lasts 10–15 years. Used in most models (for example, Biryusa-130, Biryusa-220).
- 🔘 Silicone rubber - found in premium series. Softer, retains elasticity longer, but more expensive. Used in models with No Frost.
- 🔘 PVC (vinyl) - a budget option for compact refrigerators (for example, Biryusa-50is less durable, can crack over time.
The seal is attached to the door using:
- 🔧 Screws —in old models (before the 2000s).
- 🔧 Glue —in modern ones refrigerators.
- 🔧 Grooze (inserted without fasteners) —in some new series.
If the seal has lost elasticity, it can be restored using hot water (immerse on 5–10 minutes in water at a temperature of 60–70°C) or silicone grease. But if cracks or breaks appear, only replacement. Seals from "Turk" seals from "Atlanta" or "Stinola" are suitable (you need to select according size).
⚠️ Attention: If the refrigerator door "Biryusa" becomes difficult to close, check not only the seal, but also the hinges - they may sag over time. In this case, adjusting or replacing the hinges will help.
Close the door by inserting a sheet of paper between the seal and the body|Pull the sheet - if it comes out easily, the seal is worn|Check around the entire perimeter of the door|Pay attention to the corners - wear occurs faster there-->
Electronics and control system
Unlike foreign refrigerators, where electronics often become the “weak link”, "Biryusa" famous for the simplicity and reliability of control systems. There are no redundant functions, but everything necessary for stable operation is present:
- 📟 Mechanical thermostat - used in most models (for example, Biryusa-130, Biryusa-140). repair, is not afraid of voltage surges. It operates on the basis of gas bellowswhich reacts to temperature.
- 📟 Electronic unit. controls - found in new series with No Frost or inverter compressor (for example, Biryusa-510Vulnerable to voltage surges, but allows more precise temperature control.
- 📟 Protection relay —protects the compressor from overheating. "Biryusa" use relays RTK-X or DHR, which are easy to replace yourself.
Feature "Biryusa" — modular connection diagram. All wires and connectors are standardized, so replace the thermostat. or the relay can be used without a soldering iron. For example, in the model Biryusa-220 the thermostat is connected through the connector X1, and the compressor - through X2.
If the refrigerator stops turning on or is unstable, check:
- 🔌 Fuse (located on the board or in the plug).
- 🔌 Thermostat - turn the adjustment knob If. a click is heard, it is working.
- 🔌 Start relay - if there is a malfunction, the compressor will “hum” but will not start.
⚠️ Attention: In refrigerators "Biryusa" with electronic control (for example, Biryusa-510) the board may burn out during voltage surges. To avoid this, use voltage stabilizer or phase control relay.
How to reset an error on the electronic panel?
In most models "Biryusa" with a display you can make an error reset by holding the button Super Cool (or Fast Freeze) for 5-10 seconds. If the error appears again, diagnostics are required.
Internal shelves and drawers: materials and features
Internal equipment "Turks" is dictated by practicality: there is no fragile glass or complex mechanisms. Instead, they use:
- 🧊 Tempered glass shelves —in most models (for example, Biryusa-130, Biryusa-220). The glass thickness is 5–6 mm and can withstand loads of up to 20 kg. They are mounted on metal guides.
- 🧊 Plastic shelves —in compact refrigerators (for example, Biryusa-50). Cheaper, but less durable (maximum load - 10 kg).
- 🧊 Metal grilles - in freezers of older models (for example, Biryusa-3). They are resistant to low temperatures, but can rust.
- 🧊 Boxes made of food-grade plastic —in new models. Made from polypropylene (PP) or polystyrene (PS)which can withstand temperatures from -30°C to +70°C.
Feature "Biryusa" — adjustable shelves. In most models, they can be adjusted in height or removed completely. For example, Biryusa-140 there are 5 levels of adjustment.
If cracks appear on the shelves or chipped, they can be replaced. For "Biryusa" shelves from "Atlanta" or "Stinola" are suitable (must be selected according to size). Glass shelves are mounted on silicone bushings, which can dry out over time - they can also be replaced independently.
| Element | Material | Max. load | Features |
|---|---|---|---|
| Glass shelves | Tempered glass | 20 kg | Withstand sudden temperature changes |
| Plastic shelves | Polypropylene (PP) | 10 kg | Easy to clean, but can be deformed |
| Boxes for vegetables | Polystyrene (PS) | 5 kg | Have ventilation holes |
| Door balconies | Plastic + metal fastenings | 3 kg | Can be adjusted in height |
FAQ: Frequently asked questions about the materials and design of Biryusa
🔹 Why does the Biryusa case not rust, although it is made of steel?
The body of refrigerators "Biryusa" is covered with a layer of zinc (galvanization) or powder paint, which protects the metal from corrosion. In addition, the steel has a special low carbon composition, which reduces the risk of rusting. Modern models also use anti-corrosion primers.
🔹 Is it possible to replace the compressor in the "Biryusa" with a more powerful one?
Theoretically, yes, but this requires reworking the cooling system. The compressor must correspond chamber volume i refrigerant type. For example, if your model uses R134a, then the new compressor must be designed for this freon. It is better to consult with a specialist, since incorrect selection can lead to overheating or insufficient cooling.
🔹 Why do they use plastic instead of metal in the new "Biryusha"?
Plastic allows you to reduce weight and cost the refrigerator, as well as improve thermal insulation (plastic conducts heat worse than metal). However, metal is still used in key components (compressor, evaporator, condenser). Plastic parts (for example, shelves or drawers) are made from food grade polymerswhich are safe for health.
🔹 Which seal is better - rubber or silicone?
Silicone seal longer life and retains elasticity longer, but is more expensive. Rubber (EPDM) is cheaper and quite reliable with proper care. In refrigerators "Biryusa" rubber seals are often used, as they are better tolerated low temperatures (down to -30°C). Silicone can be found in models with No Frost.
🔹 Why is "Biryusa" louder than foreign refrigerators?
This is due to the type of compressor. Most models "Biryusa" use piston compressorswhich are noisier than inverter ones. In addition, some refrigerators do not have additional sound insulation (for example, rubber shock absorbers on the compressor). If the noise becomes stronger than usual, check compressor mountings i cleanliness of the condenser - dust can increase vibration.