In modern retail, the visual component plays a decisive role in the buyer’s decision to purchase. Showcase refrigerator is specialized commercial equipment that does not It simply keeps food fresh, but also displays it in the most attractive light. This is a hybrid of the functionality of a refrigeration chamber and the aesthetics of an exhibition stand.
The main difference between such equipment and a conventional household or warehouse refrigerator is the design of the doors and the lighting system. It uses tempered glass with increased transparency and anti-condensation coating, as well as special LED lamps that do not heat the interior space, but emphasize the texture and color of the product.
Understanding this what is a refrigerated display caseis necessary not only for supermarket owners, but also for owners of small coffee shops, pastry shops or pharmacies. A correctly selected model allows you to increase the turnover of goods on the shelf by up to 30% due to impulse demand.
Design features and principle of operation
Any refrigeration equipment is based on a closed refrigerant circuit, but in showcases the cooling system is designed taking into account frequent opening doors. Compressor-condensing unit in such models often has an increased margin of safety in order to quickly restore the temperature regime after contact with the warm air of the sales area.
The most important element is the defrosting system. Unlike household models, an evaporator is often used here, which minimizes the formation of ice on glass and shelves. This is critically important for preserving the presentation of products, especially when it comes to confectionery products or meat gastronomy. automatic defrosting evaporator, which minimizes the formation of ice on glass and shelves. This is critically important for preserving the presentation of products, especially when it comes to confectionery or meat gastronomy.
⚠️ Attention: When installing a display case in a room with high humidity or drafts, the anti-condensation system may not cope. It is recommended to additionally check the operation of the glass heating elements before starting active operation.
The housing design is made of stainless steel or aluminum with powder painting, which provides protection against corrosion and mechanical damage. The internal space is organized so that cold air is evenly distributed across all shelves, without creating “warm pockets.”
Technical nuances of air circulation
Modern models use a forced convection system. Fans take air from below, pass it through the evaporator and send it back through special channels in the rear wall. This creates an “air curtain” at the doorway, which prevents cold from escaping outside.
Classification of refrigerated display cases
The market offers many modifications, and the choice depends on the type of product sold. Temperature conditions is the first criterion for separation: there are models for deep freezing, medium-temperature storage and specific high-temperature cabinets.
By the installation method, built-in and free-standing units are distinguished. Built-in options are often used as part of kitchen sets or bar counters, where a single design code is important. Free-standing models can be wall-mounted or island-mounted, which allows them to be placed in the center of the sales area for maximum visibility.
- 🧊 Confectionery display cases: equipped with a horizontal display and often have curved glass for a better view of cakes.
- 🥩 Gastronomic cabinets: designed for meat and fish delicacies, often have a “zero temperature” zone.
- 🥤 Bakery and dairy display cases: universal models with grid shelves for bottles and trays.
- 💊 Pharmaceutical refrigerators: have increased accuracy of temperature maintenance and a monitoring system.
Deserve special attention horizontal lari display cases with a transparent lid. They are more often used for storing frozen semi-finished products and ice cream, where maximum energy efficiency is important, since cold air, being heavier than warm air, does not evaporate when the lid is opened.
Criteria for choosing equipment for business
When purchasing commercial equipment You can’t rely on price alone. Energy efficiency Class A or A+ will pay for itself within the first two years of operation due to lower energy bills. Cheap models with class B and lower consume 20-30% more energy.
The second important parameter is climate class. The equipment must operate stably at ambient room temperature. If the showcase is located in a hot restaurant kitchen or at the entrance to a store where there are drafts, it is necessary extended climate class (SN-T), which allows operation at ambient temperatures up to +43°C.
| Display type | Temperature mode | Cooling type | Main purpose |
|---|---|---|---|
| Medium temperature | from 0°C to +10°C | Static / Dynamic | Milk, drinks, confectionery |
| Low temperature | from -18°C to -24°C | Dynamic | Frozen foods, meat |
| Humidor display | +12°C to +14°C | Static with humidification | Cigars, elite cheeses |
| Pharmaceutical | +2°C to +8°C | Forced circulation | Medicines, vaccines |
It is also worth paying attention to the type of refrigerant. Modern environmentally friendly gases, such as R600a or R290, are less harmful to the environment and are often more economical, although they require qualified maintenance.
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Rules for placement and installation
Installation of a refrigerator display case requires compliance with strict technical regulations. Ventilation gap between the rear wall of the equipment and the wall of the room must be at least 10-15 cm. This is necessary for free air circulation around the condenser and prevent overheating of the compressor.
The installation surface must be perfectly flat. A misalignment of even a few millimeters can lead to improper closing of the doors, disruption of the tightness of the circuit and, as a result, to the formation of ice and increased energy consumption. Use a building level during installation.
⚠️ Attention: It is strictly forbidden to install refrigerated display cases near heat sources (radiators, stoves, direct sunlight). This leads to a critical overload of the compressor and a reduction in the service life of the equipment.
Connection to the electrical network must be made through a separate grounded outlet. The use of extension cords and tees is not recommended, as compressor starting currents can cause heating of the contacts and a fire hazard. It is advisable to use a voltage stabilizer if surges are observed in the network.
Operation and care of glass surfaces
The glass of a display case is the “face” of your product. To keep it clear, it needs to be cleaned regularly. However aggressive chemistry is prohibited: alkaline and acidic agents can damage the anti-condensation coating and seals.
For daily cleaning, warm water and a mild glass detergent are sufficient. Wipe surfaces with a soft cloth or microfiber, avoiding abrasive sponges that leave micro-scratches. Scratches not only worsen the appearance, but also become centers for condensation crystallization.
Pay special attention to the door sealing rubber bands. They need to be wiped clean of dirt and grease, and also periodically lubricated with silicone grease. Dried or damaged rubber allows warm, moist air to pass through, which causes freezing of the ends of the display case.
- 🧼 Wipe the glass with a dry cloth after washing to avoid streaks.
- 🚫 Do not use scrapers to remove ice or dirt.
- 🔌 Before any When wet cleaning equipment, be sure to unplug it.
Timely defrosting (if the model is not equipped with the No Frost system) also affects the transparency of the glass and operating efficiency. A thick layer of ice on the evaporator acts as a heat insulator, forcing the compressor to work without interruption.
Typical faults and diagnostic methods
Even the most reliable equipment can fail. Most often, owners encounter a problem when The display case does not maintain temperature. This may be caused by a freon leak, a malfunctioning thermostat, or a broken fan.
Another common problem is excessive noise or vibration. If the display case is installed smoothly, but is humming, the compressor may need to be replaced or the start relay needs to be repaired. A knock often indicates that a foreign object has entered the fan rotation zone.
⚠️ Attention: Self-repair of the refrigeration circuit (replacing freon, soldering pipes) is prohibited without a license and special equipment. Unqualified intervention can lead to complete failure of the unit and is dangerous to health.
If condensation constantly forms on the glass, although there is normal humidity in the room, check the operation of the glass heating element and the integrity of the door seal. Often the problem is solved by simply adjusting the door hinge or replacing the heating element.
Why does the product freeze in the display case at the back wall?
This occurs due to a lack of air circulation or the thermostat setting is too low. It is also possible that the product is lying close to the back wall, where the cold air outlet is located. It is necessary to move the product 2-3 cm away from the wall and check the temperature settings.
Is it possible to use a household display case in a store?
Technically it is possible, but it is not economically feasible. Household models are not designed for frequent opening of doors (hundreds of times a day) and work in a warm store room. The resource of a household compressor in such conditions will be exhausted in 6-8 months.
How often should you defrost a display case without No Frost?
The recommended defrosting frequency is once a month or when an ice crust forms more than 3-5 mm thick. More frequent defrosting is not required, but it cannot be delayed either, since ice reduces the cooling efficiency.
What to do if the display case emits a plastic smell after switching on?
A slight smell of plastic in the first hours of operation of the new display case is normal (factory lubricants and coatings burn out). If the smell persists for more than a day or has a burning tint, turn it off immediately and contact service. The wiring or motor may be overheating.
Does the color of the product affect the choice of backlight?
Yes, it does. For meat, lamps with a pink spectrum are used, for vegetables - with a green or warm white spectrum, for fish - with a cool bluish tint. Properly selected color temperature light makes the product visually fresher and more appetizing.