The role of these parts in cold storage construction

The role of these parts in cold storage construction

Speaking of cold storage, we must all know that in the field of food in our daily life, it brings us not only convenience in life, but also health and safety. Everyone knows that any piece of equipment will need a lot of large and small parts, and the perfect combination of these parts can make the whole equipment operate normally. One can imagine the importance of these parts for cold storage. Today, the editor will take everyone to get to know the parts that need to be used in the cold storage and the role they play in the cold storage.

　　 Compressor: It acts to compress and drive the refrigerant in the refrigerant circuit. The compressor extracts the refrigerant from the low-pressure zone, compresses it, and sends it to the high-pressure zone for cooling and condensation. The heat is dissipated into the air through the radiating fins. The refrigerant also changes from a gaseous state to a liquid state, and the pressure increases.

　　 Condenser: It is one of the main heat exchange equipment in the refrigeration system of the cold storage. Its function is to cool and condense the superheated vapor of the high temperature refrigerant discharged from the assembled cold storage compressor into a high-pressure liquid.

Evaporator: It absorbs the heat in the cold storage, so that the liquid refrigerant absorbs the heat transmitted from the freezer and evaporates under the low pressure and low temperature evaporation, and becomes a gaseous refrigerant. The gaseous refrigerant is sucked into the compressor and compressed. Drain into the condenser to remove heat. Basically, the principle of the evaporator and the condenser is the same, the difference is that the former is to absorb heat into the library, and the latter is to discharge heat to the outside.

　　 Liquid storage tank: Storage tank for freon to ensure that the refrigerant is always saturated.

　　 Solenoid valve: One prevents the high-pressure part of the refrigerant liquid from entering the evaporator when the compressor is stopped, to avoid the low pressure when the compressor is started next time, and to prevent the compressor from liquid shock. Second, when the temperature of the cold storage reaches the set value, the thermostat will act, the solenoid valve will lose power, and the compressor will stop when the low pressure reaches the stop set value. When the temperature in the cold storage rises to the set value, the thermostat will act, and the solenoid valve will When the low-pressure pressure rises to the compressor start-up setting value, the compressor will start.

　　High and low pressure protector: prevent high pressure and low pressure to protect the compressor.

　　 Thermostat: It is equivalent to the cold storage brain controlling the opening and stopping of the cold storage refrigeration, defrosting, and the opening and stopping of the fan.

　　 Dry filter: filter impurities and moisture in the system.

　　 Oil pressure protector: Ensure that the compressor has enough lubricating oil.

　　Expansion valve: also called throttle valve, it can make the high and low pressure of the system form a huge pressure difference, so that the high pressure refrigeration liquid at the outlet of the expansion valve is rapidly expanded and evaporated, and the heat in the air is absorbed through the pipe wall for cold and heat exchange.

　　Oil separator: Its function is to separate the lubricating oil in the high-pressure steam discharged from the refrigeration compressor to ensure the safe and efficient operation of the device. According to the oil separation principle of reducing the airflow speed and changing the airflow direction, the oil particles in the high-pressure steam are separated under the action of gravity. Generally, if the air flow velocity is below 1m/s, the oil particles with a diameter of 0.2mm or more contained in the steam can be separated. There are four types of oil separators commonly used: washing type, centrifugal type, packing type and filter type.

　　 Evaporator pressure regulating valve: It prevents the evaporator pressure (and evaporation temperature) from falling below the specified value. Sometimes it is also used to adjust the force of the evaporator to adapt to changes in load.

　　Fan speed regulator: This series of fan speed regulators are mainly used to adjust the speed of the fan motor of the outdoor air-cooled condenser of refrigeration equipment, or to adjust the speed of the cooler of the cold storage.