[Refrigerator Selection Note] What should you pay attention to when buying a refrigerator and how to measure the quality of a refrigerator
How to measure the quality of a refrigerator
1. Types of refrigerators
There are also many types of refrigerators. door to distinguish. According to the number of doors, refrigerators are divided into single-door refrigerators, double-door refrigerators, side-by-side refrigerators, three-door refrigerators and multi-door refrigerators.
1, single door
This type of refrigerator has only one door, but there is a small freezer inside. space.
2, Double Doors
This type of refrigerator is the largest refrigerator in the market, with the traditional upper and lower door design.
3. Side-by-side doors
Side-by-side refrigerators are more common in luxurious open kitchens and villas.
4, three doors
It is more popular, there is a safe space in the middle, which can be freely adjusted between 0 and 4 degrees.
5, multi-door
This type of refrigerator is aimed at high-end users and has rich functions, mainly including four doors and six doors.
Second, the refrigeration method of the refrigerator
1. Air-cooled
Also known as frost-free Refrigerator, complex structure, high power consumption, high price. The cooling speed of the refrigerator compartment is fast, and the refrigeration quality is good. Automatic defrosting device, easy to use. It is suitable for use in coastal areas with high air humidity, along the Yangtze River and in the south.
2. Direct cooling type
Also known as frost refrigerator. Simple structure and low price. The cooling effect of the freezer is good, and the cooling of the refrigerator is slow, easy to frost, and it is troublesome to defrost. Suitable for northern and inland areas with drier winters.
3. Hybrid type
It combines the advantages of the first two types of refrigerators. Cold, no need for regular defrosting.
Three, a few key words you need to know
Consumers will definitely be familiar with any electronic product when they first come into contact with it. Influenced by the proprietary nouns owned. If you want to choose a good refrigerator, it is very helpful to know the terms of the refrigerator first. Among them, the refrigeration method, compressor and condenser, as the three important components of refrigerator refrigeration, have become the focus of our introduction below.
1. Refrigeration method
After entering the store, ordinary consumers will first ask about the cooling effect of the refrigerator. And this cooling effect has a lot to do with the cooling method used. Among them, the current refrigerator refrigeration methods used in the refrigeration method are divided into three types: direct cooling, air cooling, and air direct cooling.
a. Direct cooling, also known as frosted refrigerator, uses natural evaporation to absorb heat, so that hot and cold air circulates naturally inside the box. This method has the characteristics of rapid cooling, low noise and low production cost. However, the disadvantage is that the temperature at the refrigeration pipe (freezer in the refrigerator) is low. If there are too many storage items, it will affect the air-conditioning circulation, which will cause uneven temperature in the refrigerator box, and there is moisture on the refrigerated vegetables. frost.
b, air-cooled, also known as frost-free refrigerator. The refrigerator adopting this cooling method circulates the cold air produced by the cooling pipe through the built-in fan, which can avoid the frosting problem caused by the direct cooling method, but the cost is high, the power consumption is large, and the structure is complicated and difficult to maintain. A disadvantage of air-cooled refrigerators.
c, air direct cooling mixed type. The advantages and disadvantages of direct cooling and air cooling are obvious, so the high-end refrigerator products launched by refrigerator brands often use the air-direct cooling hybrid technology. The room is air-cooled, which can keep vegetables and other stored items fresh and frozen without worrying about frost.
2. Compressor
The complete cooling system of the refrigerator is composed of compressor, condenser, anti-dew pipe, capillary, evaporator drier, It consists of refrigerant and connecting pipes. What we mainly introduce here is the compressor and the condenser that everyone is very concerned about.
The compressor mainly includes crankshaft, piston, cylinder, rotor, body and other components.
In addition, the quality of a refrigerator is closely related to the insulation material, insulation layer, door seal and internal air duct design of the refrigerator box. Although the compressor is the key to the refrigeration of refrigerators, ordinary consumers do not need to blindly pursue the brand of the compressor when purchasing a refrigerator. They should observe the overall design ability of the refrigerator when purchasing.
3. Condenser
The refrigerator products of the same brand and different positioning will use different condenser forms. At present, the condensers in the market mainly use Bondi. Tubes or galvanized copper tubes are divided into external condensers and built-in condensers, which have different advantages and disadvantages.
a. External condenser. Hanging the external condenser on the back of the refrigerator will have some influence on the overall appearance design of the refrigerator, and when placing the refrigerator using the external condenser, it needs to be placed at a distance from the wall to ensure good heat dissipation performance. However, the advantages of the external condenser are simple process and good heat dissipation effect.
b. Built-in condenser. The built-in condenser is divided into two sides of the box and the back. The built-in condenser on both sides of the box has high cost and complicated process, but it has a large heat dissipation area, good intelligent effect and beautiful appearance. The built-in type installed on the back has low cost and beautiful appearance, but the heat dissipation area is not large, the effect is poor, and the process is complicated.
Although the condenser is the purchase indicator that consumers need to know, but like compressors, refrigeration evaporators, such as aluminum plate tubes, wire tube evaporators and filter driers, consumers do not need to pay too much attention What is the form of the condenser. Because the freezing capacity in the refrigerator purchase indicators introduced next, is to show the overall refrigeration effect of the refrigerator with clear national standard data. It can be as high as the freezing capacity.
Four. Excellent Humanized Design
The quality of the interior layout and air duct design of the refrigerator is the presentation of the industrial design capabilities of refrigerator manufacturers. When measuring the quality of a refrigerator, we emphasize humanization! Through the incident of Luo Yonghao’s smashing of the refrigerator, we can see the impact of humanized design on the user’s mood. The humanized design of the refrigerator can reduce the repetitive physical labor of users, care for specific groups (disabled or vulnerable groups) and individual users’ needs. .
The humanized industrial design is reflected in the refrigerator, so that after opening the refrigerator door, you can see the location of food storage at a glance (such as installing LED lights inside the refrigerator), which is convenient for taking the refrigerated items in the box ( Such as detachable portable egg rack), easy to clean, personalized painting and automatic door closing technology emphasized by Luo Yonghao. Therefore, humanized industrial design should not be a watershed of price, but should reflect the humanistic care of manufacturers for users. Regardless of the price of the refrigerator, the manufacturer is responsible for the user’s better use of the refrigerator.
1. Reasonable internal layout and unobstructed air duct design
Small volume single-door refrigerators (less than or equal to 45L) are sold on the market because of the internal design It is small, and the space of the refrigerator room and the fresh-keeping room is designed to be shared. Small volume refrigerators are designed with the refrigerating chamber as the refrigeration pipe of the entire refrigerator. Therefore, when selecting this type of refrigerator, first observe the position of the interior design of the refrigerating chamber, whether it is convenient for the circulation of cold air in the entire refrigerator box.
The internal layout of the refrigerator: The internal layout of the refrigerator will affect the number of storage refrigerators and whether the space is effectively utilized. Although we will consider different spaces such as 45L or 120L when buying a refrigerator, it is not the bigger the better. For example, the distance between the partitions inside the refrigerator is too close or too far, and the space of the box cannot be fully utilized, and the bad layout affects the air duct. The direction will also have a great impact on the cooling effect. However, with the upgrading of refrigerators, it is very rare for the internal layout of the refrigerator to be bad, but it is necessary to pay attention to this as a judgment of the quality of the refrigerator.
Air duct design: For air duct design, almost every brand has different design methods, but their design concepts are similar. In the box, circulating refrigeration is formed, and the flow of cold air in the box will not be affected by the number of items to be refrigerated. When purchasing, just observe the introduction of the refrigerator air duct on the promotional color page, and judge whether it is reasonable.
When choosing the interior of a double-door or three-door refrigerator, if the refrigerator adopts a cold circulation function and an air-cooled all-round fresh-keeping design, the vegetables and fruits can be kept fresh for a long time. For example, Siemens KK29 refrigerator adopts air duct to ensure uniform temperature inside the fresh-keeping room; many products of Panasonic, such as NR-C26WP1, also adopt multi-channel three-dimensional air supply technology, using gentle wind to avoid frostbite of fruits and vegetables; LG GR-B2076FJA refrigerator uses 360 Circulating air supply. Domestic brands also have relevant technical manifestations, but they are different in naming.
2. Strong cooling capacity
Based on the understanding of the refrigeration method of the refrigerator, almost all indicators to measure a good refrigerator are related to this. For a product that needs to provide a low-temperature storage environment, the current national standard defines the freezing force as: how many kilograms of storage can be changed from 25 degrees Celsius (subtropical, temperate and sub-temperate refrigerators) or 32 degrees Celsius in 24 hours (Tropical refrigerator) The ability to freeze to -18 degrees Celsius, the unit is kg/24h. The freezing capacity of the freezer within the effective volume of 100L is not less than 2kg/24h. The freezing capacity of the refrigerator needs to be marked on the product nameplate.
According to the different cooling methods, the freezing capacity of refrigerators with air-cooled cooling method at the same price is about 10kg/24h, and the freezing capacity of refrigerators with direct cooling is about 18kg/24h. We can refer to the freezing capacity of Rongsheng BCD-202M refrigerator priced at about 1300 yuan is 3kg/24h; the freezing capacity of Haier BCD-539WT priced at 4300 yuan is 10kg/24h.
It can be seen from the price and refrigeration capacity that a strong freezing capacity means a higher price, as consumers need to choose a refrigerator with a freezing capacity according to their own usage.
3. Sufficient storage capacity and low power consumption
Not only the freezing capacity is the main indicator for us to measure the quality of a refrigerator, The cost of use and comfort are closely related to power consumption, and the operating sound is also the standard to measure the quality of a refrigerator. The power consumption (unit: KWh/24h) and operating sound (unit: dB) can also be found on the nameplate of the refrigerator, and the lower the number, the better.
In addition, when consumers consider the power consumption of a refrigerator, the fresh-keeping ability and storage capacity cannot be ignored. But as the saying goes, “you can’t have both.” A refrigerator with a higher storage capacity will also increase its power consumption.
Currently, the power consumption of mainstream brand refrigerators on the market is less than one kilowatt-hour of electricity per day, and the energy consumption gap between various brands is within a few tenths of a degree. The power consumption is directly related to the refrigeration capacity. In addition, it also varies with the number of times the door is opened and closed and the amount of storage. For example, the power consumption of a refrigerator with a total volume of 230 liters is in the range of 0.55-0.60 KWh/24h, while the power consumption of a refrigerator with a total volume of 360 liters is in the range of 0.65-0.68 KWh/24h.
4. Adopt inverter compressor
Because the temperature in the box drops to the set value, the compressor will stop working, and when the temperature in the box rises to the warning value The compressor will start for cooling. Therefore, for old refrigerators, the noise when starting the compressor to cool the inside of the box is unavoidable. Of course, when the compressor is powered on, the voltage rises instantaneously, and the power consumption is obvious, which is also a common problem of old refrigerators.
However, the compressor with frequency conversion technology is different, it does not need to be started frequently to meet the cooling demand, just change the working frequency. At the same time, the adjustment of power can effectively utilize electric energy and play a role in energy saving. Therefore, there is no need to start the compressor and stop the compressor instantly, so that the refrigerator with inverter technology compressor has low noise and stable temperature control in the box.
5. Has a thoughtful sterilization and odor removal design
Presumably every reader can find a way to remove the odor inside the refrigerator in some life magazines or websites A good method, such as placing activated carbon in the refrigerator to absorb the odor in the refrigerator, etc. And for today with such advanced technology, the optional indicators of a good refrigerator have also added the item of removing odor.
5. Choose a refrigerator that suits you
The refrigerator, which is fully armed with various latest technologies and intelligent systems, makes almost every consumer irresistible Its functions are alluring, but the rich features are often accompanied by high prices. So is the latest technology refrigerator really suitable for every consumer?
If the refrigerator you purchased is only used to refrigerate the remaining meals until the next day, or you are a temporary resident wandering in a different place, then choose an ordinary double-door direct-cooling refrigerator It is completely enough to use, but pay attention to its noise and freezing capacity when purchasing.
And if you are choosing a refrigerator for a large family, not only to refrigerate fruits and vegetables, drinks, etc., but also to refrigerate some meat foods, then the door-to-door direct-cooling hybrid refrigerator is very suitable. The side-by-side refrigerator has a larger refrigeration space, such as the fruit, milk powder, snacks eaten by the baby can be stored, the drinks and beer of the father; the snacks and cosmetics of the mother, and the delicious food that the grandparents can cook, etc. box” includes.
In addition, the direct-cooling hybrid refrigerator can quickly bring fruits and vegetables into refrigeration, and also has more space to store meat. Therefore, whether it is a family of three or a family of five, the side-by-side direct-cooling hybrid refrigerator is more convenient, and the relatively high price of the side-by-side refrigerator can also be shared among every member of the family, although the one-time investment is high, But it’s more affordable.
The last thing we want to say is that with the advancement of science and technology and the improvement of the country’s refrigeration standards for refrigerators, it is no longer troublesome for us to weigh the standards of a good refrigerator. The most important thing is that a good refrigerator is suitable for consumers’ home use. It is the wisest choice for consumers to choose refrigerator products with appropriate capacity and refrigeration capacity according to their daily refrigerated food storage capacity.
