As a special transportation vehicle, Isuzu refrigerated vehicles are specialized vehicles that refrigerate or insulate stored items or goods, playing a vital role in maintaining the freshness and quality of goods. The working principle of Isuzu refrigerated vehicles is mainly divided into three stages: refrigeration, heat preservation, and circulation.
1: Refrigeration
The refrigeration system of Isuzu refrigerated box trucks consists of four parts: compressor, condenser, expansion valve and evaporator. The compressor is responsible for compressing low-temperature refrigerant into high-temperature and high-pressure refrigerant, and transferring heat and pressure to the condenser. The condenser cools the high-temperature and high-pressure refrigerant through the radiator, turning it into high-pressure and low-temperature liquid refrigerant. The expansion valve adjusts the flow rate to allow the low-temperature and low-pressure refrigerant to enter the evaporator to evaporate, thereby refrigeration. The refrigeration system of refrigerated box trucks is roughly the same as the refrigeration principle of household air conditioners and commercial refrigerators.
2: Insulation
The insulation material of Isuzu freezer truck is the key to ensuring that the interior of the refrigerated truck has certain thermal insulation and thermal insulation properties. Commonly used types of Freezer truck insulation materials mainly include polyurethane foam, rock wool, fiberglass and extruded polystyrene. Insulation materials can not only effectively reduce temperature changes, but also ensure that the internal environment of the Freezer truck is relatively stable and the temperature is suitable.
3: Loop
When the refrigeration system replaces high-temperature and high-pressure refrigerant with high-pressure and low-temperature liquid refrigerant, the expansion valve allows the low-temperature and low-pressure refrigerant to enter the evaporator and evaporate, forming a cycle that continuously circulates, thereby achieving the effect of thermal insulation and refrigeration of refrigerated vehicles.
In general, the normal operation of the insulation and refrigeration systems of Isuzu refrigerated vehicles can be controlled by some professional equipment and sensors, such as temperature sensors, refrigerators, etc. When the temperature reaches a certain standard, the refrigeration system will automatically or be controlled to adjust. Ensure the internal environmental load requirements of refrigerated vehicles to achieve the effect of freshness and heat preservation.