Jump out of the refrigerator with frost and no frost "misunderstanding"

As the temperature in Yucheng continues to rise, the use of refrigerators is more frequent. Many consumers know that refrigerators in the home appliance market are mainly divided into two categories: “fresh refrigerators” and “frostless refrigerators”. However, when buying and using, they do not necessarily know the difference between the two, not only often confused. It may also fall into the "misunderstanding" of the fixed thinking.

Misunderstanding 1

"No frost" is better than "with frost"?

"No frost" and "with frost" is actually a common saying. From a professional point of view, the "frost free" refrigerator is actually an air-cooled refrigerator, and the "frosted" refrigerator is a direct-cooling refrigerator. Simply put, the direct-cooling refrigerator is directly cooled and cooled, and the air-cooled refrigerator is convected by internal circulation to form convection to achieve refrigeration. The advantages and disadvantages of the two methods coexist, each has its own merits. The direct-cooling refrigerator is more suitable for small-capacity refrigerators, and the air-cooled type is more suitable for large-capacity refrigerators.

From the technical development process of the refrigerator, the earliest is the "cool" refrigerator with a direct cooling type, and then slowly developed into an air-cooled "frostless" refrigerator. "Frost-free" refrigerators seem to be more popular with consumers because they do not need to be de-iced.

But in fact, the direct-cooling refrigerator has also been solving the problem of "frosting". When the domestic refrigerators just entered the family in the 1980s, many "frosted" refrigerators were very frosty, and today, the frosting phenomenon has been greatly reduced. This is because today's direct-cooling refrigerators have lengthened the cooling tubes, such as A number of small cooling tubes extend under the shelves of the freezer compartment, trying to make the cooling more uniform and avoid thicker frosting.

Conclusion The direct-cooling refrigerator and the air-cooled refrigerator have different skills in technology, so it is impossible to say absolutely that “no frost” is better than “with frost”. In general, frost-free refrigerators do not require de-icing, which is more convenient. Of course, you can't ignore the efforts of direct cooling refrigerators to reduce frost.

Misunderstanding 2

"No frost" is more expensive than "with frost"? - "Air-cooled refrigerator direct cooling price"

Since the "frost-free" refrigerator is more convenient to use, the wind direction on the market is to promote the "frost-free" refrigerator, so for a long time, consumers have formed a traditional concept of "no frost" than "calorie". From the perspective of the market as a whole, this is indeed the case. Air-cooled refrigerators mainly focus on large-capacity technology, especially for large-capacity refrigerators that open doors. Air-cooled refrigerators have always been the high-end representatives in the market. The price of air-cooled refrigerators on the market is more than 2,000 yuan, and the air-cooled refrigerators equipped with computer boards are priced at 3000-4000 yuan, which is difficult for many consumers to reach.

However, in recent years, Galanz, Haier and other refrigerator manufacturers have tried to reduce the average price of air-cooled "frost-free" refrigerators. Taking Galanz as an example, Galanz has just joined hands with JD.com to launch a network sub-brand UU, a 210-litre double-door mechanical UU air-cooled refrigerator, with a price of 1699 yuan, especially for young consumers who are not economically affluent. The price enjoys a high-end air-cooled refrigerator.

Conclusion The "no frost" refrigerator is high-end, but it can't be said that the "frost-free" refrigerator is more expensive than the "frost" refrigerator. It can't be said that all the expensive ones are "no frost" refrigerators. These traditional stereotypes are not very accurate, in fact, it depends on the specific model and price.

Misunderstanding 3

There is frost and no frost, "water and fire are not allowed"?

In the traditional concept, many consumers think that “there is frost in the refrigerator”, “the frost-free refrigerator is frost-free”, and it seems that “with frost” and “no frost” are two categories with distinct boundaries. It seems that there is nothing wrong with this. In fact, although there are different technologies, such as “frost” and “no frost”, the price is different, and the market positioning is different, but it is not a relationship between “water and fire”.

The most typical one is a refrigerator that can be a combination of "frost" and "no frost", that is, "direct cold + air-cooled" dual mode, such a "direct cold + air-cooled" dual-mode refrigerator on the market and Not uncommon. For example, Samsung, LG, Electrolux and other large-capacity open-door large-size refrigerators have a relatively large volume. The overall design uses an air-cooled design, but it still has a direct cooling tube.

Tips

The difference between direct cold (with frost) and air-cooled (no frost)

Direct cold refrigerator

Principle: The cooling method of natural convection of air is adopted, and the heat transfer in the food or indoor air is absorbed by the evaporator to cool and cool down.

Advantages: relatively low power consumption, low price, low noise, and slow water loss. Disadvantages: slow cooling rate, uneven temperature inside the tank, easy to frost on the rear wall of the refrigerated liner and the evaporator of the freezer, defrosting trouble.

Air-cooled refrigerator

Principle: All greenhouses in the refrigerator adopt the method of forced air convection cooling. The evaporators are placed in a special refrigeration area, and the fan is blown to cool the air in the refrigerator to reduce the temperature inside the cabinet.

Advantages: The cooling speed is fast and uniform, the food is frozen fast, the freshness is good, and the frost is achieved.

Disadvantages: large power consumption, high noise, and fast water loss.

Hexagon Head Self Drilling Screw

Hexagon Head Self Drilling Screw

Hexagon Head Self Drilling Screw

Hebei Qianmu Fastener Manufacturing Co., Ltd , https://www.qmjgjfasteners.com