How are refrigerated compartments made?

The cost of cold chain transportation is high. In addition to the high daily operating costs, the cost of buying a car is also much higher. Taking an ordinary 4.2-meter blue light truck as an example, the price of an ordinary car is 8,000-10,000 yuan, while the price of a refrigerator is about 30,000 yuan, which is three times that of an ordinary car. Why is the freezer so expensive, and where is it expensive? Today, let's take a look with the refrigerated compartment manufacturers.

Preparing materials Different materials are required

Just as building a house requires preparing materials in advance, assembling a refrigerator also requires preparing materials. The most important thing is the "sandwich" board. The outer two layers of this board are of the same material, which is called "glass fiber reinforced plastic". Fiberglass is made of The product that solidifies after mixing gel coat and glass fiber, a very thin layer, the outer wall of the carriage we see is commonly known as "glass fiber reinforced plastic" material.

A layer of material is also filled between the two layers of FRP. There are two commonly used ones: one is the honeycomb panel, which is mostly used in RVs. It is characterized by light weight and good thermal insulation effect. Plate carriages are more commonly used in Hong Kong.

The other is our common PU board. PU is the abbreviation of Polyurethane, and the Chinese name is polyurethane, which is abbreviated as polyurethane. Due to the simple modification of the formula, different physical properties such as density, elasticity and rigidity can be obtained. At present, a large number of glass fiber insulation materials, wood, traditional rubber products, etc. have been replaced.

Before making the board, the workers will customize the thickness and material of the board according to the specific user of the carriage. Taking the common PU board as an example, the thickness of the current board is less than 120mm, and 80mm is more common.

It is worth mentioning that the board is not just filled with PU board or honeycomb board between two glass fiber reinforced plastics. Since it is necessary to use screws to fix it when it is assembled into a carriage, when making the plate, it is necessary to embed the steel plate in the plate according to the position of the screw, so as to facilitate the insertion of rivets or screws.

Under normal circumstances, to combine into a completed refrigerated compartment, you need to use 5 pieces of plates except the rear door. If you need a side door, add another piece, and the price will increase by about 2,000 pieces. Of all these panels, the roof and bottom and left and right sides are slightly simpler, and the front and rear doors are more complex. The front of the car needs to reserve a place to install the refrigerator, so the front plate of the car needs to be embedded with an iron frame that matches the size of the refrigerator.