This article mainly introduces the refrigeration principle of screw chiller and related knowledge of injection molding machine matching. The principle of screw chiller is as follows:
The screw chiller is called screw chiller because of its key component-the compressor uses the screw type. According to the principle of the refrigeration system, the low-temperature and low-pressure liquid refrigerant exchanges heat with the surrounding water in the evaporator. The evaporator absorbs the heat of water and evaporates into Low temperature and low pressure gas state. The temperature of the refrigerant does not change during the evaporation process. The low temperature and low pressure gaseous refrigerant enters the compressor, is compressed by the compressor, is compressed into a high temperature and high pressure gaseous state, and then enters the condenser. Heat exchange, high-temperature and high-pressure gaseous part of the heat is absorbed by the medium, the temperature of the medium rises, the refrigerant exotherms the condenser into a high-temperature and high-pressure liquid, the condenser process temperature does not change, and then enters the expansion valve to throttle, and the throttle is rapid During the cooling process, the refrigerant becomes a low-temperature and low-pressure liquid. After this process, the refrigerant enters the evaporator for heat exchange and evaporation, and becomes a gaseous refrigerant again. The gaseous refrigerant re-enters the compressor through the pipeline and starts a new cycle. These are the four processes of the refrigeration cycle. It is also the main working principle of the screw chiller, so as to realize the entire process of the screw refrigeration system cycle. This cycle is continuous, and the water can be continuously cooled.
Detailed explanation of injection molding machine matching chiller : Domestic vertical and horizontal injection molding machines are used under normal ambient temperature, and the cooling water condensing temperature of water-cooled chiller is below 35 degrees, (condensing temperature of air-cooled chiller is 43 degrees) Below). A: The first method: 1hp water-cooled chiller can be equipped with 80 tons of clamping force. The temperature of the injection molding machine can be controlled at 5-10 degrees. 1hp water-cooled chiller can be equipped with 100 tons of clamping force. The temperature of the injection molding machine is controlled at 10-15 degrees 1hp. The water-cooled chiller can be equipped with a 120-ton clamping force. The temperature of the injection molding machine is controlled at 15-20 degrees (the matching of the air-cooled chiller is 0.8 times that of the water-cooled chiller. The mold temperature of the injection molding machine is controlled at 5-10 degrees.) B: The second method: 1HP water-cooled chiller can be equipped with a single injection quantity of 10 QZ. The temperature of the injection machine is controlled at 5-10 degrees. The injection quantity is 1QZ. = 28.5g The above formula is the result summarized by chanting. In addition to using the above formula, the salesperson should test the actual situation and select a suitable chiller. C: The match between the chiller and the cooling water tower, according to the previous actual chanting 1HP cold water The machine requires a 1.2 ton cooling water tower to take away the heat generated by the chiller. The cooling water of the injection molding machine mold is recycled. The water from the injection machine is hot and needs to be pumped to the cold water tower to be cooled and stored in the pool. The injection molding machine is cooled by a water pump. Especially in summer, a cold water tower must be used to recycle water resources, which can reduce costs, thereby achieving low-carbon environmental protection, high efficiency and energy saving!
The relevant knowledge of screw chiller accounts for a very large proportion in the ⎝⎛龙博线上娱乐⎞⎠ center column of Dongguan Guansheng Machinery Co., Ltd. From this aspect, the importance of relevant knowledge of screw chiller can also be seen. More relevant industry knowledge is welcome to visit Our official website http://ylscps.com