Smoking cabinet from the refrigerator: a complete guide with drawings and nuances

Converting an old refrigerator into a smoking cabinet is one of the most popular projects among home smokers. This is not only a way to save on buying a factory smokehouse, but also an opportunity to create a unique device to suit your needs: with adjustable temperature, optimal volume and even process automation. Unlike homemade smokehouses made of plywood or metal barrels, the refrigerator already has ready-made thermal insulation, a sealed door and a durable body - all that remains is to adapt it to new tasks.

However, not every refrigerator is suitable for such a modification. For example, models with the system No Frost require additional modifications due to ventilation ducts, and old Soviet units (such as "ZIL" or "Minsk") may have too thin walls that will quickly rust from smoke. In this article we will analyze critical differences in the designs of refrigerators from different eras and how they affect the final resultand also give step-by-step instructions taking into account modern safety requirements (including fire inspection standards for household smokehouses).

Which refrigerators are suitable for remodeling - selection criteria

Not every refrigerator is worth remodeling. The main criterion is inner chamber material. The best option:

• 🔹 Stainless steel or aluminum - do not rust, are easy to clean, can withstand high temperatures (up to 120°C for hot smoking). Found in premium refrigerators (for example, Liebherr, Samsung RS-series).
• 🔹 Enameled coating - suitable for cold smoking (up to 40°C), but can crack when hot. Typical for Soviet models ("Biryusa", "Oka").
• 🚫 Plastic is absolutely not suitable! When heated, it releases toxins, and at temperatures above 60°C it is deformed. Often found in budget models (Indesit, Atlant younger series).

The second important parameter is type of cooling:

• 🔹 Drip system (evaporator on the back wall) - the best option. Easily dismantled, does not interfere with the installation of smoking equipment.
• 🔹 No Frost - requires the removal of ventilation ducts and sealing of the holes, otherwise the smoke will escape and the temperature will be distributed unevenly.
• 🚫 Absorptive refrigerators (operate on gas or electricity without a compressor) - not suitable due to the risk of ignition of ammonia vapor when heated.

⚠️ Attention: If the refrigerator ran on freon R-12 (banned since 2020), be sure to dispose of it before disassembling - opening the system yourself can lead to vapor poisoning.

Also pay attention to:

• 🔹 Chamber volume: optimally 100-200 liters. Less is inconvenient for large products (for example, ham), more - it is difficult to maintain a uniform temperature.
• 🔹 Door tightness: check the seal. If it has dried out, replace it with a silicone one (for example, EPDM - holds). up to 150°C).
• 🔹 Presence of shelves: metal grates can be used as stands for food, plastic ones - only for cold smoking.

Preparing the refrigerator: disassembling and cleaning

Before remodeling, the refrigerator must be completely disassembled and cleaned of freon residues, oil and food contaminants. Start by disconnecting from the network and dismantling all removable elements:

Remove shelves, drawers and door compartments|

Remove the door seal (if damaged)|

Disconnect the thermostat and relay|

Remove the evaporator and condenser|

Drain the oil from the compressor (if you plan to use it)-->

Pay special attention to cleaning the inner chamber:

1. Rinse the walls with a soda solution (2 tablespoons per 1 liter of water) to remove grease and odors.
2. To remove rust, use a converter (for example, "Zincar") or phosphoric acid.
3. Treat the surfaces with an antiseptic (for example, "Whiteness", diluted 1:10) - this will kill bacteria and mold.
4. Dry the chamber with a hair dryer or in the sun for 2-3 days.

If there was a freon leak in the refrigerator, check the compressor for functionality. It can be used to create forced ventilation systems (by connecting a tube to it to supply smoke), but only if the model supports reverse (for example, compressors) system Danfoss or Secop). Otherwise, it is better to install a separate fan (power 10–20 W).

⚠️ Attention: When disassembling refrigerators with a system No Frost do not throw away the fan - it can be adapted to distribute smoke evenly inside the chamber. It is enough to clean the blades from fat and replace the bearings.

Schemes of the smoking cabinet: cold vs hot smoking

The design of the smokehouse depends on the type of smoking.

1. Cold smoking (temperature up to 40°C)

Suitable for fish, cheeses, sausages. Smoke is supplied from an external generator (for example, from a chimney or oven), and the refrigerator is used as a food chamber. Advantages:

• 🔹 There is no risk of overheating. walls.
• 🔹 You can use plastic parts (if the temperature does not exceed 30°C).
• 🔹 Easier to manufacture - no thermal insulation required.

2. Hot smoking (temperature 60–120°C)

Used for meat, poultry, vegetables. The smoke generator is placed inside or outside, but the chamber must withstand high temperatures:

• 🔹 Thermal insulation of the walls is required (for example, basalt wool + sheet steel).
• 🔹 A temperature control system is required (thermocouple +). relay).
• 🔹 A chimney is required to remove excess heat.

For hot smoking, they often use combined circuit: the smoke generator is placed outside (for example, in a metal box with a heating element), and the smoke is supplied through a pipe to the bottom of the refrigerator. This reduces the risk of overheating and simplifies temperature control. An example of such a design:

[Smoke generator] → [Pipe Ø50–80 mm] → [Refrigerator] → [Chimney Ø100 mm]

Installing chimney and ventilation

Correct system smoke exhaust is the key to uniform smoking and safety. To organize it you will need:

• 🔹 Pipes stainless steel (diameter 50–100 mm). Aluminum is suitable for cold smoking.
• 🔹 Dashes for adjusting draft (can be made from sheet steel).
• 🔹 Sealant for sealing holes (for example, asbestos cord or silicone sealant "Moment Sealant").
• 🔹 Fan (if forced circulation is needed), a 12 V computer cooler is suitable (for example, Noctua NF-A12).

Step-by-step installation instructions:

1. Drill holes in the upper and lower parts of the refrigerator (the diameter is 2-3 mm larger than the pipe). To do this, use a metal crown or a stepped drill.
2. Insert the pipes and secure them with clamps. high-temperature sealant (withstands up to 300°C).
3. Install dampers at the smoke inlet and outlet. They should open 30-70% for optimal draft.
4. If you use a fan, place it at the top of the chamber (for hot smoking) or outside (for cold smoking). for automatic control.

For hot smoking, be sure to provide chimney a length of at least 1 meter (it is better to take it outside or into a ventilation shaft). If the smokehouse is used indoors, install a sensor CO (for example, Xiaomi Mi Air Quality Monitor).

What will happen if you make a chimney incorrectly?

If the draft is poor, smoke will accumulate in the lower part of the chamber, which will lead to:

- Uneven smoking (the upper products will remain pale).

- Increased humidity and the formation of condensation on the walls.

- Risk of carbon monoxide poisoning (especially during hot smoking indoors).

Heating and temperature control system

For hot smoking, a stable temperature is needed. It can be provided by several. ways:

1. Electric heater

The simplest option is TEN with a power of 0.5–2 kW. It is installed in the lower part of the chamber or in a separate smoke generator:

• 🔹 Heating element for a boiler (For example, Thermex Champion) - suitable for water or oil (as a coolant).
• 🔹 Ceramic heater (for example, Steba KG) - distributes heat evenly, but is more expensive.
• 🔹 Infrared heater —energy efficient, but requires precise adjustment of the installation height.

2. Gas burner

Used for outdoor smokehouses. Advantages:

• 🔹 Fast heating.
• 🔹 Possibility of adjusting the flame.

Disadvantages: good ventilation and gas leakage control are required. Recommended models: burner "Gaslux" or Campingaz Bleuet.

3. Wood generator

Classic option for cold smoking. Smoke is generated by smoldering sawdust or wood chips in a separate chamber. Optimal wood types:

• 🌲 Oak - universal, suitable for meat and fish.
• 🌳 Alder - gives a golden color and soft aroma.
• 🍎 Fruit trees (apple tree, cherry) - ideal for poultry and cheeses.
• 🚫 Conifers (pine, spruce) - contain resins that spoil the taste.

For automatic temperature control, use:

• 🔹 Thermostat (mechanical or electronic). For example, INKBIRD ITC-1000 allows. set the temperature range and control the heater.
• 🔹 Thermocouple with a digital display (for example, Fluke 561).
• 🔹 Wi-Fi module (for example, Sonoff TH16) for remote control via smartphone.

⚠️ Attention: When using electric heaters with a power of more than 1 kW, connect them through a separate circuit breaker (16 A) and an RCD. The wiring must withstand the load - the cable cross-section is at least 1.5 mm².

Refining the door and sealing

The smokehouse door should close tightly so that the smoke does not escape outside, but not be completely sealed - this is will lead to a pressure surge and the risk of explosion (during hot smoking). The optimal solution:

• 🔹 Replace the standard seal with silicone (for example, EPDMIt can withstand temperatures up to 150°C.
• 🔹 Install latches or screw clamps for a tight fit.
• 🔹 Drill in the top of the door hole Ø10–15 mm to release excess pressure.

If the door is rusty, it can be restored:

1. Clean off the rust with a grinder or drill attachment.
2. Treat the surface with a rust converter (for example, "Ferum-3").
3. Apply heat-resistant paint (up to 200°C), for example, Kudo KU-6001.
4. Reinforce the door from the inside with a steel sheet (1-2 mm thick), screwing it with self-tapping screws.

For convenience, you can install observation window heat-resistant glass (for example, pyrex). data-i="237">viewing window

First smoking: testing and adjustment

Before the first use, the smokehouse needs to be tested:

1. Checking the tightness: close the door, bring a lighted match to the joints. does not fluctuate - the seal is installed correctly.
2. Test. warming up: heat the chamber to operating temperature (for example, 80°C for hot smoking) and check how quickly it cools down. The optimal cooling time is 1-2 hours.
3. Test smoking: use inexpensive products (for example, chicken legs or cheese). This will help calibrate the time and temperature.

Typical problems when starting up for the first time and their solutions:

After test smoking, clean the chamber from soot and grease. To do this:

• Rinse the walls with hot water and vinegar (1:1).
• Treat the surfaces with baking soda to neutralize odors.
• Dry the chamber for 24 hours with the door open.

FAQ: Frequent questions about a smokehouse from a refrigerator

Is it possible to use a refrigerator with plastic walls?

No, plastic releases toxins when heated. The exception is cold smoking at temperatures up to 30°C, but even in this case, plastic will become fragile over time. The best option is refrigerators with a metal chamber (stainless steel or enameled). steel).

Which chimney is better: upper or lower?

For cold smoking, the lower chimney is suitable - the smoke rises naturally, evenly processing the products. For hot smoking, a combined system is better: smoke is supplied from below and discharged from above through the chimney.

How much sawdust is needed for one smoking?

Consumption depends on the volume of the chamber and the type of wood. On average:

• For cold smoking: 200-300 g of sawdust for 4-6 hours.
• For hot smoking: 500–800 g for 2–3 hours.

Sawdust should smolder and not burn - to do this, limit the access of oxygen (for example, cover them with foil with holes).

Is it possible to smoke in an apartment?

Technically it is possible, but only in a cold way and with mandatory ventilation. Hot smoking indoors is prohibited by fire safety rules (Ministry of Emergency Situations Order No. 156 of 2021). An alternative is to move the chimney to a balcony or into a ventilation shaft, but even in this case, the risk of carbon monoxide poisoning remains. clean the smokehouse?

How often should you clean your smoker?

After each use, remove soot and grease from the walls - this will prevent the appearance of an unpleasant taste. Once every 3-6 months, carry out a deep cleaning:

1. Rinse the chamber with a solution of vinegar or citric acid.
2. Treat the metal parts with an anti-corrosion agent. composition.
3. Check the seal for wear.

Store the smokehouse with the door open in a dry place.