Refrigerator choose straight cold or air cooled?
(1)、Comparison of preservation performance
1. direct cooling refrigerator
Direct cooling refrigerator has a unique humidity advantage in preservation:
Since there is no forced air flow, the room naturally maintains a high relative humidity (usually up to 75%-85%). This environment is especially suitable for storing leafy vegetables, fruits and other food materials with high moisture content, which can effectively reduce water evaporation and extend the shelf life. Experimental data show that under the same conditions, the weight loss rate of spinach in direct-cooled refrigerators can be 30%-40% lower than that of air-cooled refrigerators. Suitable for daily storage ingredients to ordinary vegetables and fruits, more attention to the basic preservation effect of family use.
2. air-cooled refrigerator
Air-cooled refrigerators show their fresh-keeping skills by virtue of precise temperature control:
The forced convection system makes the temperature distribution in the box more uniform, and the temperature difference in each area can be controlled within 1 ℃, avoiding the common phenomenon of “warm up and cold down” in traditional refrigerators. Modern air-cooled refrigerators generally adopt independent circulation or multi-air duct design, which can provide differentiated storage environment for different ingredients. It is suitable for people who have a high pursuit of quality of life, often store all kinds of precious ingredients and high-grade food, need to accurately control the storage conditions, and do not mind the use of refrigerators with relatively high prices.
(2)、Analysis of frosting phenomenon
1. direct cooling refrigerator
When the direct cooling refrigerator is running, the moisture in the air in the box will condense into frost on the surface of the evaporator when it is cold, which is a physical phenomenon of natural heat exchange. As the use time increases, the frost layer gradually thickens, and artificial defrosting is usually required every 3-6 months. Suitable for slow pace of life, have time to clean the refrigerator regularly, and the pursuit of affordable refrigerator, low energy consumption of the crowd to use.
2. air-cooled refrigerator
The air-cooled refrigerator solves these 1 problems through an intelligent defrosting system. The evaporator is hidden inside the air duct and is equipped with a defrost heating device that is activated regularly or on demand. When it is detected that the frost layer reaches a certain thickness, the system automatically starts the defrosting program, and the melted frost water is led to the outside for evaporation through the pipe. This design to achieve a true sense of the use of frost experience, suitable for busy work, the pursuit of convenient life, do not want to defrost the need for high-quality life.
(3)、Noise and energy consumption
1. energy consumption
①. Direct cold refrigerator
The direct cooling refrigerator has a simple structure, does not need a fan and a complex air duct, and has low theoretical energy consumption in a static state. However, the decrease of thermal conductivity caused by frost accumulation will gradually increase the actual energy consumption. For families or singles who use refrigerators less frequently and store less food, the lower theoretical energy consumption of direct cooling refrigerators can meet the demand at the initial stage, which is an economical choice.
②. Air-cooled refrigerator
Although the air-cooled refrigerator increases the power consumption of the fan, its high heat exchange efficiency and automatic defrosting function make it more stable for long-term operation. For families with many family members, large food storage and frequent use, and focusing on long-term cost and convenience, air-cooled refrigerators are more suitable for stable energy efficiency.
2. noise
①. Direct cold refrigerator
The noise of the direct cooling refrigerator mainly comes from the operation of the compressor, and its sound volume is generally 36 – 42 decibels, which is similar to the ambient sound of the library. For the pursuit of quiet, sensitive to sound, especially sleep is not good, afraid of refrigerator interference, direct cooling refrigerator is a good choice to create a quiet environment.
②. Air-cooled refrigerator
The air-cooled refrigerator increases the sound of the fan, and the overall noise of high-quality products can be controlled at 38-45 decibels, which is close to the sound level of drizzle. It is worth noting that fan noise characteristics are different from compressors, and some users may require an adaptation period. For people who have a high pursuit of quality of life and don’t care about the initial adaptation process, air-cooled refrigerators are a good choice.
Recommended to buy LG S684MEG94A refrigerator:
(1)、Panoramic perspective door-in-door design
Traditional refrigerators need to open the main door to view and access common items, resulting in air-conditioning leakage and increased energy consumption. The panoramic perspective door-in-door design of LG S684MEG94A refrigerator with opposite doors realizes quick access and placement of high-frequency access items such as drinks and condiments by setting transparent observation windows outside and independently opening small hatch doors. The design reduces the internal temperature fluctuation caused by frequent opening and closing of the main door, and helps to maintain the temperature stability of the refrigerating compartment, so as to achieve the effect of energy saving and power saving while improving the convenience of use.
(2)、Independent dual-system dual-cycle
The LGS684MEG94A is equipped with two completely independent refrigeration systems. The refrigerator compartment and the freezer compartment are equipped with independent evaporators and fans to form a true double cycle.
1. precise temperature control
The double cycle can realize the independent and precise control of the temperature of the two compartments without interfering with each other, so as to realize the precise temperature control within ± 0.5 ℃. Whether refrigerated fruits and vegetables are fresh-keeping or frozen meat is quick-frozen, it can provide a stable and suitable temperature environment and lock the original freshness and nutrition of the ingredients.
2. high efficiency and energy saving
The dual systems operate independently, avoiding the high energy consumption of the single system compressor frequently starting. Cold volume is delivered accurately on demand, and refrigeration efficiency is greatly improved. At the same time, the air-conditioning of the two rooms is not interconnected, which reduces the heat load caused by the temperature difference, the overall operation is more stable, the power consumption is significantly reduced, and the energy saving performance is more outstanding.
3. anti-odor
The refrigeration cycle can maintain a high-humidity and low-temperature environment suitable for fruits and vegetables, while the refrigeration cycle ensures a low-temperature dry state, which is conducive to long-term storage of meat. The two sets of circulating airflow are completely isolated, which can effectively prevent the smell of different foods from crossing, and solve the problem of food taste from the physical level.
(3)、UV nano ultraviolet active sterilization technology
Ultraviolet sterilization technology has been widely used in medical and water treatment
fields. The refrigerator integrates a UV nano ultraviolet generator in the refrigerator, which emits short-wave ultraviolet rays that can damage the DNA or RNA structure of microorganisms and make them lose their ability to reproduce. The system delivers the cold air irradiated by ultraviolet rays to every corner through the circulating air duct, realizes the continuous sterilization of the air and the surface of the object in the refrigerator, significantly inhibits the growth of bacteria and mold, and provides a more hygienic environment for food storage.
(4)、DoorCooling + and multi-dimensional wind curtain system
Refrigeration uniformity is a key factor affecting the preservation effect. DoorCooling + technology solves the problem of high temperature in the door area of the traditional refrigerator by adding an air outlet inside the door panel to directly cool the items on the door frame. The multi-dimensional air curtain system is designed with multiple vents to form a three-dimensional air curtain barrier at the moment of opening the door to slow down the influx of external hot air. The two work together to ensure the high uniformity of temperature distribution in each area of the box and reduce the local temperature difference.
