BaoWenChe (also called refrigerator) are transported meat, fish, fruit and vegetables, perishable goods vehicles. These goods in transit to maintain a certain temperature, humidity and ventilated condition, so the body BaoWenChe with insulation materials, interior with cooling device, heating device, temperature measurement device and ventilation cooling, heat preservation, with warm and three performance. BaoWenChe body appearance, and silver paint, reduce heat reflecting sunlight. China has BaoWenChe refrigerator BaoWenChe homemade BaoWenChe and machinery.

       BaoWenChe refrigerator cars can be divided into the refrigerator and roof refrigerator type two kinds, these two kinds of heating the difference lies in the refrigerator cars inside the setting position and direction of air circulation. According to the structure BaoWenChe machinery, a quarter BaoWenChe mechanical and thermal insulation the (including machine and machine cold cold goods generation car). According to BaoWenChe mechanical power and refrigeration way and can be divided into three categories: 1, centralized power supply, the focus of the whole train - refrigerating power generators by car, refrigeration, ammonia refrigeration concentrated brine as refrigerants, as refrigerant, 2, centralized power supply, alone the refrigeration by generators, centralized power supply of cold machine equipped with goods, refrigeration equipment alone by freon refrigeration as refrigerant, forced air circulation, 3 and BaoWenChe - every single day machinery are equipped with power and car, refrigeration equipment, can separate generation and refrigeration, also can use the power supply. China railway BaoWenChe model mainly has: the refrigerator BaoWenChe type B11 B14, B17 B16, BaoWenChe and machinery, B18, B19, B21 B23, etc.

       Five day type mechanical B23 type heat by a machine to the car and four cars generating cold cold machine consisting of goods vehicles. A refrigerator BaoWenChe machinery BaoWenChe advantage is:

       The car can evenly, maintain temperature and humidity, regulation and easy adjustment and control, can fully guarantee the quality of goods transport,

       - use need not add ice and ice, save money, not for accelerating turnover, reduce the cost of transportation vehicles,

       - not transportation distance in length and transport vehicle retention time limit, can guarantee that the goods delivered safety.

       BSY type four type heat the frozen board is a new kind of perishable goods transport vehicles, by three cars and a car goods with the room attendant car component. The use ground refrigeration equipment cooling, car top cheng storage containers (i.e., the freezing cold) ", it is called "filling BaoWenChe frozen plate. Every car has 14 block frozen goods vehicles, vehicle temperature is maintained at - 180 °, can run continuously 100h. Car has temperature-adjusting, interior temperature in -12 ° ~ + 5 ° c range.