A freezer is a household appliance that keeps food fresh for longer, creating a cold environment that prevents food from spoiling or freezing. But, do you know how freezers are made for low temperatures?Do you know what to look out for when you use your newly bought freezer for the first time?Today, we will introduce to you the working principle and use of the freezer, so that you can make better use of the freezer and enjoy the food.
How the freezer worksFreezers work by using a substance called a refrigerant, compressed and expanded, to achieve a change in temperature. A refrigerant is a substance that can turn into a gas at low temperatures and a liquid at high temperatures, and it can absorb or release heat in different states. The main components of the freezer are the compressor, condenser, expansion valve and evaporator, which are connected by a tube to form a closed circulation system. The compressor is the heart of the freezer, which is responsible for compressing the refrigerant from a gaseous state at low pressure and low temperature to a gaseous state with high pressure and high temperature, and then feeds it into the condenser. The condenser is the lungs of the freezer, which is responsible for cooling the refrigerant from a high-pressure, high-temperature gaseous state to a high-pressure, low-temperature liquid state while releasing heat, which is why the back of the freezer can be hot. The expansion valve is the throat of the freezer, which is responsible for expanding the refrigerant from a liquid state at high pressure and low temperature to a gas-liquid mixture at low pressure and low temperature, thereby reducing the temperature and pressure of the refrigerant and providing refrigerant to the evaporator. The evaporator is the intestine of the freezer, which is responsible for evaporating the refrigerant from the gas-liquid mixture at low pressure and low temperature into a gaseous state with low pressure and low temperature while absorbing heat, which is why the inside of the freezer can be cold. In this way, the refrigerant completes a cycle that continuously exchanges heat inside and outside the freezer, thus achieving the purpose of refrigeration.
How to use the new freezerIf you've just bought a new freezer, you may be tempted to use it right away to store food, however, there are a few steps you need to take to keep your freezer up and running. The first step is to place the freezer in a stable, ventilated place away from direct sunlight, at a distance from walls and other objects to facilitate heat dissipation. If the freezer is not properly positioned, it may cause problems such as noise, vibration, and poor refrigeration of the freezer.
The second step is to unpack the outer packaging, check whether the appearance and accessories of the freezer are in good condition, and understand the functions and operation methods of the freezer according to the instructions. If you find that the freezer is damaged or missing parts, you should contact the after-sales service in time to avoid affecting the use of the freezer.
The third step is not to turn on the power immediately, let the freezer sit for a period of time, let the lubricating oil and refrigerant in the refrigeration system flow back to the normal position, and prevent the oil circuit failure. During the transportation of the freezer, the lubricating oil and refrigerant in the refrigeration system may be separated or lost due to bumps or tilting, which will affect the refrigeration effect of the freezer. The time to stand depends on different freezer models and handling methods, generally speaking, if the freezer is not tilted or only tilted for a short time during transportation, then the rest time can be shortened to 1-2 hours, if the freezer is tilted for a long time during transportation, then the rest time can be extended to more than 24 hours.
Fourth, after the power is turned on, do not put in the food first, and let the freezer run empty for a while to reach a stable temperature. When the freezer is first starting to operate, there may be some odor or moisture, which is normal and there is no need to worry. The dry running time depends on the model and capacity of the freezer, generally speaking, the dry running time can be shortened to 4-6 hours for small or medium freezers, and the dry running time can be extended to more than 24 hours for large or super large freezers.
Step 5: Adjust the thermostat and choose the right temperature level according to the purpose of the freezer and the food it is stored. The thermostat of a freezer generally has multiple gears, from low to high.
Step 6: When putting in the food, be careful not to overfill or overweight it to avoid blocking the air duct or damaging the freezer. The air duct of the freezer is the respiratory tract of the freezer, which is responsible for distributing the cold air evenly inside the freezer, if it is blocked by food, it will affect the cooling effect of the freezer and the preservation effect of the food. In addition, the weight capacity of the freezer is limited, and if you put too much heavy food, it will cause the freezer to deform or be damaged.
Step 7: Clean the freezer regularly to maintain the hygiene and performance of the freezer. During the use of the freezer, some dirt, odor, mold, etc. may be produced, which will not only affect the aesthetics of the freezer, but also affect the refrigeration effect of the freezer and the hygiene of food. Therefore, it is recommended that the freezer be cleaned and disinfected every once in a while in the following ways:
Unplug the freezer first, remove the food from the freezer, and store it elsewhere.
Use warm water and mild detergent to wipe down the inner walls, door seals, drawers and other parts of the freezer to remove dirt and odors.
Rinse the inside of the freezer with clean water and dry it with a dry cloth or let it dry naturally.
Disinfect the inside of the freezer with 75% alcohol or other disinfectant to kill bacteria and mold.
Plug in the freezer and adjust the thermostat to get the freezer back up and running.
Put the food back in the freezer, and pay attention to sorting and organizing to avoid cross-infection.
The above is how to use the freezer, I hope you can help you.