What are the characteristics of Dongfeng refrigerated trucks?

Dongfeng refrigerated truck.

Features:

TightnessThe containers of refrigerated trucks need to be tightly sealed to reduce heat exchange with the outside world to keep the temperature low inside the refrigerated containers.

RefrigerationThe additional refrigeration equipment is connected with the container and provides a continuous supply of refrigeration to ensure that the temperature of the container is within the allowable range of the cargo.

LightnessGenerally, the goods transported by refrigerated trucks are items that cannot be stored for a long time, and although there is refrigeration equipment, they still need to be delivered to the destination quickly.

Thermal insulationThe containers of refrigerated trucks are similar to containers, but are made of materials that are better insulated, reducing heat exchange.

Refrigerated truck classification:Perishable foods that are frequently transported are broadly divided into the following categories:

The first category is:Frozen foods, such as frozen meat, aquatic products, quick-frozen food and so on. These foods generally require storage temperatures below -18°C and can be stored for a few months to more than ten months. During the hourly transportation of these foods, only the set temperature in the compartment needs to be set at -18°C, and the accuracy of temperature fluctuations is not strictly controlled.

This type of food should be transported in F-class refrigerated trucks.

The second category is:Refrigerated food, such as chilled meat, aquatic products, poultry eggs and so on. The transportation temperature requirement of this kind of food is to ensure that the food does not freeze, the lower the temperature, the better, that is, close to 0 °C or lower. This type of food requires the transportation of refrigerated trucks of class D, E and F.

Some canned food requires a transport temperature of around -5°C and is transported in Class E and F refrigerated trucks.

The third category is:Fruits and vegetablesWait. The transportation of this type of food is more complicated in refrigerated transportation. First of all, the temperature requirements of various vegetables or fruits are different; Secondly, many vegetables or fruits have relatively high requirements for temperature fluctuations, and they cannot deviate from the set temperature a lot; Third, because vegetables and fruits still have to breathe after picking, respiratory heat will be generated, so the refrigerated truck refrigeration unit is required to provide more cooling capacity.

In addition, this type of food also has a requirement for relative humidity. Therefore, although refrigerated trucks from A to F can be used for the transportation of vegetables and fruits in principle, the technology and experience of the carrier are very important.

TightnessThe containers of Dongfeng refrigerated trucks need to be tightly sealed to reduce heat exchange with the outside world to ensure that the temperature inside the refrigerated container is kept low.

RefrigerationThe additional refrigeration equipment is connected with the container and provides a continuous supply of refrigeration to ensure that the temperature of the container is within the allowable range of the cargo.

LightnessThe goods transported by refrigerated trucks are usually items that cannot be stored for a long time, and although there is refrigeration equipment, they still need to be delivered to their destination quickly.

Thermal insulationThe containers of refrigerated trucks are similar to containers, but are made of materials that are better insulated, reducing heat exchange.

With the development of transportation and the continuous improvement of people's living needs, refrigerated ships, refrigerated containers and other storage and transportation tools and methods have appeared one after another, providing a more convenient choice for the transportation of refrigerated materials.

In the past, some refrigerated trucks used ice refrigeration to refrigerate, that is, many large pieces of ice and salt mixture were placed in the compartment of the refrigerated truck, which could keep the ambient temperature in the compartment below -8. However, this refrigeration method can only be maintained for a limited period of time, if long-distance refrigerated transportation is to be carried out, a series of places with ice salt must be set up along the transportation line, so that the refrigerated truck can continuously replenish the "ice source" and maintain the refrigeration effect.

Now, mechanical refrigerated trucks are more widely used. Its working principle is basically the same as that of a household refrigerator, and it is also vaporized after absorbing heat through the refrigerant, and the vaporized refrigerant enters the compressor for pressurization and heating, and then enters the condenser tube to cool into liquid, and then enters a new round of endothermic refrigeration process. Mechanical refrigerated trucks can keep the temperature in the cabin below -18 for a long time, so many people call this kind of refrigerated truck "mobile super refrigerator", which is both visual and accurate.

The emergence of refrigerated trucks has enabled many perishable fruits, meats, cold drinks and other foods to be transported over long distances under the condition of freezing and preserving.

There are 8 types of refrigerated trucks.

1. When the average temperature inside the compartment is 12 degrees Celsius to 0 degrees Celsius, the refrigerated truck is classified as Class A.

2. When the average temperature inside the compartment is 12 degrees Celsius to -10 degrees Celsius, the refrigerated truck is divided into class B.

3. When the average temperature inside the compartment is 12 degrees Celsius to -20 degrees Celsius, the refrigerated truck is divided into class C.

4. When the average temperature inside the compartment is less than or equal to 0 degrees Celsius, the refrigerated truck is divided into class D.

5. When the average temperature inside the compartment is less than or equal to -10 degrees Celsius, the refrigerated truck is divided into class E.

6. When the average temperature inside the compartment is less than or equal to -20 degrees Celsius, the refrigerated truck is divided into class F.

7. When the average temperature inside the compartment is 8 degrees Celsius to 2 degrees Celsius, the refrigerated truck is divided into class G.

8. When the average temperature inside the compartment is less than or equal to minus 20 degrees Celsius, the refrigerated truck is divided into class H.

Introduction of refrigerated trucks:

Refrigerated trucksIt is commonly used to transport frozen food (refrigerated trucks), dairy products (dairy trucks), vegetables and fruits (fresh goods trucks), vaccines and drugs (vaccine trucks), etc.

Refrigerated trucksRefers to an enclosed van used to maintain the temperature of frozen or fresh goodsRefrigerated trucksIt is a refrigerated special transport vehicle equipped with a refrigeration unit and a polyurethane insulated compartment, and the refrigerated truck can be pressedManufacturer, chassis carrying capacity, compartment typeto classify.

Classification:

PressChassis manufacturerCategories: Dongfeng refrigerated truck, Changan Star refrigerated truck, Qingling refrigerated truck, Jiangling refrigerated truck, JAC refrigerated truck, Foton refrigerated truck.

PressChassis carrying capacityClassification: mini refrigerated trucks, small refrigerated trucks, medium refrigerated trucks, large refrigerated trucks.

PressCarriage typeClassification: bread refrigerated truck, van refrigerated truck, semi-trailer refrigerated truck.

Small van refrigerated truck.

Bread refrigerated trucks.

Construction:

The refrigerated truck consists of the walking part of the special automobile chassis, and the thermal insulation envelope (generally composed of polyurethane materials, glass fiber reinforced plastic, color steel plate, stainless steel, etc.), refrigeration unit, temperature recorder and other components in the compartment, for special requirements of the vehicle, such as the meat hook car, can be equipped with meat hook, cargo slot, aluminum alloy guide rail, ventilation groove and other options.

Refrigerated car body production technology:

1. The "sandwich" board bonding type assembled in pieces is used by the larger refrigerated truck manufacturers in China, and the refrigerated trucks produced by this technology have high thermal insulation performance.

2. Injection foaming type of shard assembly.

3. The whole skeleton is injected into the foaming type.

4. Vacuum adsorption paste.

Refrigeration unit classification:

Refrigeration units are divided into non-independent refrigeration units and independent refrigeration units. Domestic units and imported units, etc. Generally, external refrigerators are used, and a few miniature refrigerated trucks use built-in refrigerators.

For refrigerated trucks with low temperature requirements, a built-in cold plate can be adopted (the function is equivalent to that of an evaporator).

Precautions for the use of refrigerated trucks:

The interior of the carriage must be kept clean; There should be no wrapping paper and paper scraps left on the floor; Debris can obstruct air flow or be sucked in by evaporators.

When using refrigerated trucks, the interior of the compartment should be kept clean. Due to the action of the evaporator fan, the air will circulate in the compartment, causing the ground to be crushed or dirty to be sucked in by the evaporator fan. For a long time, a large number of impurities will be sucked into the evaporator coil, which will affect the refrigeration effect of the refrigeration unit.

Because the coil will be surrounded by impurities little by little, the heat exchange rate of the coil will decrease. Therefore, after a few years of refrigerated trucks, everyone will feel that the refrigeration effect is not as good as the beginning, in addition to the cause of its own failure, it is caused by the coil is too dirty. Therefore, ensuring the cleanliness of the ground in the carriage is the key to ensuring the normal operation of the refrigeration unit.

Refrigerated truck material: fully enclosed polyurethane plate bonded FRP structure. It is used in both the second and third generation refrigerated truck manufacturing companies.

This product is lightweight, has a low heat leakage rate (thermal conductivity), and has a good thermal insulation effect. Use non-plump polyester resin as binder, add cushion, and use rigid polyurethane foam for thermal insulation material, with low thermal conductivity and high strength. Plate bonding is made with a high-strength, high-sealing adhesive to form a whole.

At present, refrigerated trucks of this structure dominate domestic and foreign shopping malls!

Get an overview of it.

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Small, medium and large refrigerated trucks are used for refrigeration and preservation for convenient transportation, so as not to affect the quality of products.

In one category, the purpose is for transportation.

Types of Refrigerated Trucks:Refrigerated trucks are sprayed with A, B, C, D, E, F, H, G and other letters, these eight letters represent the eight refrigeration levels of refrigerated trucks, according to the different items transported, choose the appropriate grade of refrigerated trucks.

Uses of refrigerated trucks:

1.Deliver chilled food to keep it fresh.

2.Deliver special drugs to ensure the efficacy of the drugs.

3.Deliver cold drinks so they don't melt.

4.Deliver items that need to be kept fresh and achieve short-term freshness and quality preservation functions.

When the outdoor environment is 30 degrees Celsius, for refrigerated trucks transporting perishable food: when the ambient temperature is 30 °C, the temperature range maintained by the average temperature in the refrigerated truck compartment is divided into the following six categories:

The average temperature of Class A cars is 12°C 0°C

The average temperature of Class B carriages is 12°C -10°C

The average temperature of the C-class carriage is 12°C -20°C

The average temperature of Class D carriages is 0°C

The average temperature in Class E is -10°C

The average temperature of the F-class carriages is -20°C

Refrigerated trucks as special vehiclesThere are some must-haves before drivingThings to look out forIn case of some unnecessary troubles on the way, before each load of goods to travelThe following tests are recommended3.Refrigerated truck coolantCheck the coolant level gauge to see if the coolant amount is correct, and the pointer should be in the white range. If the coolant level is in the red range, add coolant to the coolant tank.

Usually the coolant is a mixture of ethylene glycol and water (different proportions are used according to the actual situation of the product), and should be protected to -34 without freezing. Note: Do not open the lid of the coolant tank when the coolant is hot.

4.Refrigerated truck battery terminals must be secure and free of corrosion. The electrolyte should be at the mark of full.

5.The belt belt must be kind and well adjusted to the proper tightness. The span between the pulleys is **13mm sag.

6.Electrically inspect all electrical connectors in the electrical control lines to ensure they are securely secured. Wires and terminals should be free of corrosion, burn, cracking, or moisture.

7.Visually inspect the unit for leaks, loose or broken parts, and other damage.

8.The installation gasket of the gasket unit should be firmly pressed and in good condition.

9.Refrigerated truck coil condensers and evaporator coils should be clean and free of dirt.

10.The defrost drain inspects the defrost drain hoses and fittings to make sure they are clear.

Depending on what you need, we can answer for you.

It's better to tell your needs and recommend the right one for you.

Refrigerated trucks are as followsType

The refrigerated body is sprayeda、b、c、d、e、f、h、gand other letters, these eight letters represent the eight refrigeration levels of refrigerated trucks, according to the different items transported, choose the appropriate grade of refrigerated trucks.

When the outdoor environment is 30 degrees Celsius, for refrigerated trucks transporting perishable food:

When the ambient temperature is 30°C, the temperature range maintained by the average temperature in the refrigerated compartment is divided into the followingSix categories

Class A carriagesThe average temperature is 12°C 0°C

Class B carriagesThe average temperature is 12°C -10°C

Class C carriagesThe average temperature is 12°C -20°C

Class D carriagesThe average temperature is 0°C

E-class carriagesThe average temperature is -10°C

Class F carriagesThe average temperature is -20°C

Characteristics and uses of refrigerated trucks:A refrigerated truck is a type of professional transport capacity, which has a refrigeration function, so it can transport chilled food and goods. Whether it is the catering industry, the biopharmaceutical industry or other industries that have a demand for refrigeration, this kind of refrigerated truck with refrigeration function is inseparable when transporting goods.

First, transport cold and fresh food to ensure the freshness of the food. The main function of the refrigerated truck is to keep the fresh food cold, this kind of truck is specially used to transport food, the internal hygiene is up to standard, and it can inhibit the growth of bacteria. For example, transporting chilled food, seafood, vegetables, etc. can achieve better results.

In addition, some refrigerated trucks also have a temperature control function, which can adjust the temperature according to the specific requirements of the food to achieve the best preservation effect.

Second, special drugs are transported to ensure the efficacy of the drugs. Some drugs require a lower temperature to be effective, such as sedative drugs, which have strict storage temperature requirements. The transport of these drugs requires the use of specialized cold chain trucks for storage and transportation.

The inside of the car should be strictly disinfected before the medicine can be stored inside. If the transportation road is relatively long, the temperature needs to be adjusted appropriately to ensure the safe transportation of drugs.

Third, transport cold drinks to ensure that they do not melt. The demand for this kind of refrigerated trucks is even more extensive for the distribution of cold drinks, especially in the summer, if it is to be transported in large quantities, then the demand for refrigerated trucks is very large. Generally, it is loaded directly from the cold drink factory and then transported to the cold storage of various sub-distributors.

Of course, the vehicle transporting cold drinks also needs to be disinfected to a certain extent, but the transportation of cold drinks has greater requirements for the volume of the vehicle, and large refrigerated trucks are required to complete the transportation task.

Fourth, transport the items that need to be kept alive to achieve the function of keeping fresh and quality in the short term. There are also special items that also need to be transported by refrigerated trucks, such as chemical supplies, materials for the biomedical industry, etc. However, these are relatively niche needs, and the number of shipments is generally not very large.