Five traps that buyers must know

Virtual energy efficiency rating back to top

It is a common fact that the refrigerator industry has changed parts from copper to iron or aluminum. However, the phenomenon of using aluminum wire to replace copper wire motors has also appeared in washing machine products recently. However, because the technology is not yet mature, aluminum wire motors are used. The washing machine has a great safety risk. Some time ago, there was even a serious phenomenon that the machine caught fire. Therefore, the washing machine industry should also pay attention to issues such as material shrinkage, maintenance, and dummy capacity for washing capacity.

Disclose the unspoken rules of the washing machine market

First, virtual standard energy efficiency rating

The national energy consumption indicator is the most intuitive parameter for the user to view the energy consumption data of the refrigerator. Although this test value is much smaller than the energy consumption in real life, it is one of the major competition aspects of the manufacturer. Consumers can often see words such as three-day-long electricity appearing in the refrigerator’s slogan, which are a lot different from the power consumption required for the actual use of the refrigerator.

National energy efficiency label

This is because the energy consumption of the refrigerator is usually measured in the laboratory, where the ambient temperature, the number of door opening, the cooling temperature and the amount of stored food are all closely related, so the daily power consumption data itself has many uncertainties. However, not to mention this point, market competition has also caused many manufacturers to change the energy consumption data of their own refrigerator products so that it meets the national level energy efficiency standards, or is lower than the competitors' products.

Energy consumption monitoring is generally performed in the manufacturer's laboratory

According to statistics, in the sampling inspections conducted by the State in last year, the problem of energy consumption ambiguities discovered by local appliance stores reached 50%. Among them, the energy efficiency labeling of small enterprises has almost reached 100% of false standards, and some well-known domestic companies also have false phenomenon. These phenomena are mainly due to inadequate supervision by related departments, but they also reveal that domestic appliance companies do not have any Integrity constraints.

"One-day three-day electricity" is more than advertising

Because of the need to use more efficient compressors and thicker foam layers (or better thermal insulation materials) when increasing the energy efficiency rating of refrigerators, these will significantly increase the manufacturing cost of the refrigerator. However, the current price of refrigerator raw materials is still rising or falling, but the low-power refrigerator products are generally targeted at low-end, these products are originally low profits, manufacturers generally do not spend more money to do. Therefore, those so-called three-day-old refrigerators on the market are basically gimmicks.

Second, the volume capacity of the tricky

The total volume is one of the first considerations when the user selects the refrigerator, but even the body volume indicated on the nameplate is not necessarily the size that the user can use. In recent years, there have been many incidents of consumer complaints about the volume of refrigerators. The reason is that the volume of refrigerators in the factory's trademark is shrinking compared to the volume measured by consumers themselves.

Volume is an important parameter for the user to select the refrigerator

The China Consumer Electronics Association commissioned the National Household Electrical Appliances Quality Supervision and Inspection Center to test 17 types of refrigerators, including 17 types of refrigerators, including Haier, Meiling and Toshiba. According to the standard, the total effective volume limit is 97% of the rated volume. When the measured value of the total effective volume is less than the limit value, the total effective volume of the measured product is unqualified. It is reported that only 17 types of refrigerators have a rated value that matches the measured value. There are 9 types of products that actually measure higher than the rated value. There are 7 types of products whose measured value is lower than the rated value. The maximum deviation is exactly 97% of the rated capacity. .

Drawers, partitions and other components are generally considered within the volume range

However, the national inspection standards and the impressions of consumers are different. The effective volume of the national standard refrigerator is the gross volume minus the evaporator, various shields, shells (such as lighting shades, thermostat shields, etc.), and the thickness exceeds The volume of space between the 13 mm shelves, shelves, bulkheads and other accessories, the volume of the inner door protrusions (guard rails) of the refrigerating compartment and the cooling compartment, and the inner liner. This means that during the test, the partitions and drawers in the refrigerator must be extracted before they can be tested, and there is also a large gap between the volume that the user can actually use.

Volume parameters to stand on the user's position

For refrigerator manufacturers, improving the manufacturing process and product design stringency, making the effective total volume error reduced is not difficult. The refrigerator volume measurement standard is not close to the user's habits but it is incomprehensible. Which customer will use the separator and the drawer after it is completely removed? Therefore, the value of the refrigerator volume should also be discounted when purchasing a refrigerator in the future. It is.

Washing capacity standard virtual

Just like the phenomenon that the volume of refrigerators is falsified, there are also some enterprises that appear to have higher washing capacity in order to pursue higher sales and attention. The phenomenon of common washing vacuity, like the original model of 6.0kg washing capacity was marked as 7kg, and sometimes this vacuity phenomenon is even more serious. This practice has affected the fair competition of the washing machine industry, and at the same time it has caused trouble for consumers to buy.

A small number of washing machines have problems with washing capacity

When the consumer chooses a washing machine, the washing capacity is one of the few measures, and thus has a large relationship with the price of the product. According to national standards, washing capacity means that the washing machine can wash the quality of the dried cotton fabric, and thus has practical significance in daily use. The size of the washing capacity has a greater relationship with the volume of the inner cylinder and the operating capability of the motor, and affects the cost of the product.

How to check the washing capacity

So what other methods can be used to test this phenomenon? Relative to the volume of the refrigerator, the washing capacity of the washing machine is estimated to be much simpler, after all, there is only one inner cylinder part. We can calculate the inner cylinder volume of the washing machine by measuring the radius of the inner cylinder of the washing machine and the length of the cylinder body. Then according to the calculation formula of the following figure, the ratio of the inner cylinder volume to the washing capacity, we can know whether the washing volume has a virtual scale.

Simple judgment method

Some netizens may question that the washing capacity of a washing machine is also related to various components such as a motor, but it is undeniable that the inner cylinder capacity of the washing machine is the physical basis of the washing capacity. Like an ultra-thin drum washing machine, its inner cylinder depth will be shorter than the average machine. If the inner diameter is not increased, the washing capacity is the same as that of an ordinary drum of the same brand, then this washing machine must have the problem of falsification. .

Ultra-thin washing machine

In particular, as the drum washing machine uses the gravity washing principle of washing clothes, if the inner cylinder is not high enough or the depth can not keep up, it will seriously affect the washing effect when putting more clothes. And while paying attention to the washing capacity, the parameter of washing uniformity appeared in the new standard is even more important. After all, there is a large washing capacity, but it is not a good washing machine to completely clean the laundry.

Third, the motor material shrinks

In recent years, some washing machine manufacturers have begun to use aluminum materials instead of the copper wire in the core component motor or copper clad aluminum. Although the price is lower, the negative impact is also very serious. Aluminum has a larger electrical resistance than copper and therefore has a higher heat output. When welding and other processes are not perfect, safety problems easily arise. In terms of energy consumption, low carbon and environmental protection, copper motors also have an absolute advantage.

Aluminum wire motor is prone to fire

In fact, washing machine manufacturers have always used copper wire to make motors. In recent years, aluminum wires have gradually been used to replace copper wires in motors, mainly because of the rising prices of copper materials. According to industry sources, an aluminum wire motor is 45 yuan cheaper than a copper wire. However, although the cost has dropped, the subsequent consumer troubles can be quite a lot. The replacement of the motor costs about 400 yuan.

The motor is the heart of the washing machine

Because the current aluminum motor does not have perfect technical support, when the motor is running, the maximum temperature of the copper wire motor is also 70-80 degrees, but the aluminum wire motor may reach more than 100 degrees. After the temperature rises, the welding process exists. Hidden troubles are mainly due to the fact that aluminum has a low melting point and is easily broken. After a long period of use, it is easily deformed. The performance of the motor is prone to instability and shortens the service life. In severe cases, it can cause fires. And at the same laundry time, aluminum wire motors are less energy efficient and require more power.

Washing machine motor details

From the appearance of the washing machine alone, it is impossible to judge whether the aluminum wire motor is used. Therefore, I suggest that consumers choose the washing machine is to try to choose the big brands of products, but also should choose a good reputation of home appliances stores, and in use should also be careful not to use overload. In addition, if you really worry about this issue, you can also allow sales staff to write a written guarantee on the receipt, so that when the rights will be more bargaining. Because the national washing machine standard does not specify that an aluminum wire motor cannot be used, even if it is found that an aluminum wire motor is used, it is difficult to return the machine.

For ordinary users, it is still difficult to disassemble whether the aluminum wire motor is judged by whether or not the winding wire of the motor is thicker. It is also possible to measure the resistance value of the motor to obtain the result. However, it is recommended to ask the user for professionalism. Maintenance master comes to the door for testing.

Fourth, cooling appliances, evaporators and other parts of material shrink

In view of the current rise in the price of raw materials, some refrigerator manufacturers will save costs by replacing the refrigerator's important original evaporators, condensers, and take-over materials. In fact, as we all know, copper is the best material for evaporators, condensers, and takeovers because it has the advantages of corrosion resistance, fast heat transfer, etc. However, in recent years, domestic manufacturers have replaced these materials with aluminum or Bangdi tubes. Wait.

Among them, the Bundy tube is a material used by many manufacturers. In fact, it is a galvanized welded tube. The inside is generally iron. This material is inferior to copper in temperature conduction. The most serious defect is corrosion resistance. Therefore, it is galvanized. The requirements of the floor are high. Although aluminum materials are better in corrosion resistance, they have some defects in the connection and sealing properties of the pipes and require a relatively high joint process.

Although there are some gaps between these materials compared to copper pipes, because household refrigerators are all foamed inside, the impact of humidity and other environmental factors is relatively small, and the chance of corrosion leakage is not too great. However, some small refrigerator manufacturers will have a lot of freedom in dealing with these details. The use of unsuccessful materials on the core components or many solder joints on the evaporator will cause the internal pipeline of the refrigerator to be more easily eroded and leaked. Phenomenon, which seriously affect the life of the refrigerator.

The editor has the saying: refrigerator manufacturers no longer use copper tubes as the core component material is already well known in the industry, but under the premise of good quality supervision and improved technology, there will only be less impact on the refrigerator life. . Therefore, the author here suggests that consumers should not be too persistent about whether or not to use copper tubes for refrigerator products. Instead, they should choose to buy better models or brands of refrigerators.

Fifth, high maintenance costs, can afford to afford to repair

With the continuous development of science and technology, more and more home appliances have entered the homes of ordinary people. However, problems with household electrical appliances are inevitable. Therefore, repairs naturally become an industry, but unfortunately, home appliance accessories and maintenance The cost is still high and the fees are lacking in standardization and unified supervision.

I have often seen complaints from netizens about washing machines, such as broken crosses, damaged shells, and corrosion of external cylinders. However, the most annoying problem is not just these failures, but some washing machine manufacturers do not recognize their own faults, or are irresponsible during maintenance and charge a high maintenance cost.

Washing machine maintenance problems

A Siemens drum washing machine user encountered such a depressing thing. The four-year-old machine at home used to suddenly break the bearing during the laundry process. However, after the brand's dedicated maintenance personnel came to the door, they considered this phenomenon to be a user use issue and charged 800 yuan to replace the cylinder. However, the user thinks that he does not usually allow the washing machine to operate overload. It is the maintenance personnel's judgment on the cause of the damage is too rash. The cause of the rupture of the bearing connecting the inner cylinder can be judged based on the gap, but the maintenance personnel do not make further operations. The after-sales process exists. many questions.

Severe corrosion of the drum washing machine cross

There was also a user's washing machine after two reports of leakage, the maintenance staff said they did not find it inappropriate. However, after a period of time, the washing machine cross, the outer tube, and the motor appeared to be corroded due to leakage problems that were not valued. However, the maintenance personnel indicated that they needed to pay more than 1,000 yuan to replace the parts. Even after communicating with customers after sales, only the replacement cost of more than 700 yuan was eliminated, and the cross and labor costs of 420 yuan still required the user to pay.

However, these corrosion phenomena are most likely caused by product quality problems or improper design. Recently, the country has introduced two new industry standards. According to the different principles of washing machines, washing machines are required to reach 6000 to 8000 hours. If a family wash clothes once a day, once for 2 hours, the motor can be used normally for 8 to 10 years.

This means that even if it exceeds the warranty period of the manufacturer, you can gain more bargaining chips with the manufacturer according to this standard. Therefore, it is recommended that users choose to buy a larger brand of washing machine products, so as to avoid problems with the washing machine but the manufacturers have long been ignorant of the embarrassing situation.

A domestic double door refrigerator with a price of around RMB 4,000. If the refrigerator compressor is damaged, it needs to be replaced. The cost is as high as RMB 800. Another brand, a refrigerator with a price of RMB 2,000 or so, replaces the compressor with RMB 500. . And in addition to LCD TVs, refrigerators, air conditioners and other large appliances, some small home appliances also have varying degrees of parts costs, maintenance costs are high. Ms. Lin also reflected that the panel of the cooker she had purchased had been broken, and the after-sales maintenance staff told us that they would need about 120 yuan. Miss Lin said that the induction cooker was bought for 199 yuan, and repairs actually cost 60% of the whole machine price.

Appliance repair costs are quite high

Edit Comment: At present, home appliance repair is generally composed of four costs, that is, visit fee, testing fee, repair fee and material fee. I suggest that users in the maintenance of home appliances before the best to ask about how these four aspects of how to charge, if the cost of feeling too high after the trade is better to buy a new one, so as not to come back and forth to repair both the time and wasted money.

Summary: Actually, in addition to the above pitfalls, there are issues such as false propaganda of advertisements, but it is limited to the information disclosure of listed companies and the breadth of external advertising. In this regard, manufacturers have prepared explanations and rhetoric so that it is difficult for us. Make a final decision on it. In short, before we buy electrical appliances, we can maintain a penny and a piece of goods. We hope that readers will be able to purchase products that meet their wishes in the upcoming season.