Constitution and Precautions for Using a Fridge Lorry

With the improvement of living standards and changes in lifestyle, people need more frozen foods, preserved foods, milk, fresh flowers, and large food processing enterprises. "Cold chain logistics" has also become a popular term in the transportation industry, and fridge trucks occupy a key position in ensuring the safety of perishable and fresh foods during transportation in low temperature cold chain logistics.

Composition of fridge trucks

Fridge trucks are mainly composed of a car chassis, a heat-insulated and insulated compartment, a refrigeration unit, and a temperature recorder in the compartment. For vehicles with special requirements, such as meat hook trucks, optional parts can be added, such as meat hooks, waist restraints, aluminum alloy rails, and ventilation channels.

Classification of fridge trucks

Refrigerated vehicles are actually called refrigerated and insulated vehicles, which are divided into two categories: fridge trucks and insulated trucks.

Classification by refrigeration method:

Mechanical refrigerated vehicles, freezing plate refrigerated vehicles, liquid nitrogen refrigerated vehicles, dry ice refrigerated vehicles, ice refrigerated vehicles, among which mechanical refrigerated vehicles are the main models of fridge trucks, and most fridge trucks are also mechanical fridge trucks.

Classification by chassis carrying capacity:

Mini fridge trucks, small fridge trucks, medium fridge trucks, and large fridge trucks.

Classification by compartment type:

Bread-shaped fridge trucks, compartment fridge trucks, and semi-trailer fridge trucks.

Precautions for selecting fridge trucks

Chassis

When selecting a chassis, users need to consider the structure and carrying capacity, fuel efficiency, emission standards, etc. of the chassis based on the tonnage and road conditions of the goods. The choice of a car chassis is relatively easy.

Compartment selection

The selection of the compartment depends on the specific goods transported. Different goods have different requirements for the compartment. For example, a fridge truck for transporting fresh meat needs to customize hooks on the compartment; a fridge truck for store distribution has a small batch size, multiple varieties, and requires a multi-temperature fridge truck; if temperature requirements vary and loading and unloading are frequent, a fridge truck with multiple doors is needed. Users can customize the compartment to meet their specific needs.

Material of the compartment

• The design of the refrigerated compartment is mainly based on airtight performance and insulation performance. Usually, the structure of the fridge truck adopts a three-layer structure, and the internal and external skins are composed of composite materials, such as fiberglass panels, color steel plates, aluminum alloys, and other materials.

• The material of the inner panel should be different for different transported goods. The most expensive inner material should be stainless steel plates. The intermediate layer is filled with insulation materials, mainly polyurethane foaming materials. The four sides are bonded together with high-strength glue to form a closed panel.
  

Thickness of the compartment

In addition to materials, the thickness of the compartment also determines the insulation effect. The thicker the insulation layer of the compartment, the better the insulation effect, but the internal space of the compartment will decrease and the loading capacity of the goods will decrease. Users need to choose a suitable thickness based on their actual needs.

Refrigeration unit

• Choose according to the size of the refrigerated compartment: an independent unit or a non-independent unit can be used.

• Choose according to the requirements of the fridge truck for distribution: for example, if the fridge truck is used to deliver ice cream in the city, a cold storage unit or an independent unit must be selected. Only long-distance or inter-city small-scale distribution is suitable for using a fan-type refrigeration unit.
  

Be sure to pay attention to whether the temperature sensor of the unit is installed at the return air position of the evaporator, because the temperature reading will differ by 5℃ if the temperature sensor of the unit is installed in the return air or exhaust position.