The check valve is located on the exhaust pipe, and the solenoid valve is located between the condenser and the capillary tube, and the two constitute an analog energy saving valve system. When the compressor is running, the solenoid valve is energized and the check valve is also turned on. The cycle at this time is no different from the cycle of a conventional refrigeration system. When the compressor is stopped, since the solenoid valve is interlocked with the compressor, the passage between the condenser and the capillary tube is also cut off, so as to prevent the working medium from flowing into the evaporator through the capillary through the condenser, so as to prevent the "work migration". purpose. The setting of the check valve prevents the working fluid in the condenser from flowing back into the exhaust pipe. The high-pressure gas in the exhaust pipe of the compressor is cooled under the environmental conditions, the temperature is lowered, and the pressure is rapidly decreased, so that the pressure of the exhaust pipe and the suction pipe tend to be close, thereby ensuring the normal startup of the compressor again. The energy-saving valve is connected to the refrigeration system of the refrigerator to reduce the working time factor of the refrigerator. After the energy-saving valve is applied, since the high and low pressure zones are separated when the refrigerator is stopped, the high-temperature and high-pressure refrigerant is prevented from flowing into the evaporator, so that the evaporator can be kept within the control temperature range for a long time, and the downtime of the refrigerator is prolonged. The addition of an energy-saving valve produces significant energy savings. Taking a set of data with a freezer control temperature of -18 °C as an example, the no-load power consumption of the valve-added refrigerator is 13.33% lower than that of the original refrigerator. This proves that the design of the energy-saving valve is reasonable and the energy-saving effect is obvious. In addition, since the energy-saving valve of this experiment is an analog valve, the main valve is a solenoid valve, and its own power consumption is 4W. If the power consumption of the solenoid valve is excluded, the energy saving effect will be better. Although the addition of the energy-saving valve causes the starting power of the refrigerator to decrease, the working time coefficient to decrease, and the total energy consumption of the refrigerator to decrease, the matching condition of the refrigeration system of the refrigerator is poor, so that the operating power is increased and the cycle efficiency is lowered. Automatic Skin Packing Machine Wanfeng ,the leading manufacturer from China with 25 years expertise in skin packaging, specializes in skin packaging machines,skin packaging film, skin pack film, surlyen film, skin pack glue, porous paper board, etc. Our products are exported to all over the world, universally used in the packaging of a wide range of products and industries. Our skin packaging films comply with FDA, SGS, ROHS regulations, and our skin packaging machines are CE certified. Vacuum Skin Packing Machine,Automatic Skin Packing Machine,Industrial Automatic Skin Packing Machine,Automatic Packing Machine Hangzhou Xiaoshan Wanfeng Mechanical & Electrical Equipment Factory , https://www.wfengmachinery.com