What Matters About Purchase The Electric Blanket Should Pay Attention !
It is understood that China every year to produce and sell tens of millions of electric blankets , because the production process is simple many do not have the production conditions of enterprises have also entered the industry , according to the statistics of the relevant departments, the annual flow into the market of inferior electric blankets account for about half of the total consumption.
At the beginning of this year, the Guizhou Provincial Bureau of Industry and Commerce announced the results of the directional monitoring of the quality of electric blankets in the circulation field , 11 of the 30 batches of samples that were randomly checked were unqualified , accounting for nearly 40%. Nonconforming indicators include structure, power connections and external cords, input power and current, and many other important items closely related to the safety of use .
At the beginning of this year , the reporter investigated the electric blankets sold in the Beijing market and found that the sales of electric blankets were mainly concentrated in supermarkets , small and medium-sized department stores and wholesale markets .
There are fewer varieties and brands of products sold in supermarkets and department stores, and the prices are relatively high. The seasonal products in the wholesale market are varied, some are packed in simple plastic bags , and some have beautiful packaging boxes.
A stall owner told reporters that fully in line with national standards , 3C certified products are the most expensive, to 150 yuan, others are cheaper , dozens of yuan sold , "in fact, can be used ." He explained it this way .
The electric blanket should be considered as the first electric heating appliance to enter the residential home. After more than 30 years of development , the appearance and packaging of electric blankets are no longer what they used to be , the technology of its internal key components has also made great progress . The reporter learned that QB/T2163-2012 《Electric blankets, electric heating pads & similar flexible heating appliances for the heating wire》has been implemented on June 1 , new standard will be a new type of heating wire into the standard scope.
Is this really the case? The evaluation results that ：The electric blanket carried out by the evaluation center of the China Household Electrical Appliances Research Institute , show that products at different prices not only have a world of difference in product comfort , but also have a great difference in product safety .
For example , the same is the heating wire , some companies use a Double-Layer Spiral Structure . The heat line in heating wire is a carbon fiber material , is a kind of heating material different from metal heating wire , with low temperature (body heat is soft), bending resistance and other characteristics . However, in the evaluation, it was found that there is a seemingly Single-Layer Spiral Heating Wire, which is called a False Single-Layer Spiral Heating Wire by experts , and is wound on the nylon core wire with a very exaggerated large pitch (basically, the straight wire state) , when the temperature too high , even if the Nylon Core/Polyester Wire Melts , it will not cause changes in the pitch of the heating wire , it cannot have the role of overheating protection .
“Ling Honghao”, director of the electric heating appliance Laboratory of the National Household Electrical Appliances Quality Supervision & Inspection Center , said that due to the fatal defects of single straight wire and single spiral hair heating wire .
Automatic temperature limit can not be achieved , there are safety risks , so from January 1, 2004 , the state began to implement the 《Electric Blanket Safety Standards》 . Since then , some large enterprises have eliminated the “Single Straight Wire” ,“Single Helix Hair Heating Wire” , began to use “Double Helix Hair Heating wire”. The “Double Helix Hair Heating wire” is composed of two heating wires inside and outside , there is a special insulating material in the middle of the two heating wires.
When the temperature rises abnormally at any place of the heating wire of the electric blanket and reaches a certain temperature , the insulating material in the middle of the two heating wires in the heating wire will melt , so that the two heating wires will have a short circuit , controller in the switch will sense the current change. Automatically cut off the power supply.
The heating wire is a key component in the electric blanket , which plays a decisive role in the material cost of the electric blanket. Some small enterprises in order to reduce costs on the heating wire, such as some enterprises use high-power heating wire, arbitrarily increase its spacing , not only reduces the comfort of the product , product safety can not be guaranteed. Well-known enterprises have made a lot of technical investment in this regard to improve product safety and comfort , and have successively developed products with overheating control protection , folding resistance , dry cleaning resistance and low radiation.
How should we choose a qualified electric blanket? Editor summarizes the following points through the understanding of“ Shenzhen XingGuang Electric Heating Products Co., LTD. “ hoping that can help the majority of consumers .
First point is to choose 12V-24V low-voltage electric blanket , low voltage is relatively safe, this aspect goes without saying that everyone knows . The second point is to check whether the electric blanket is made of carbon fiber heating wires as heating conductors , Third point is to check whether there is an automatic temperature control function , if so, it is strongly recommended to choose to buy .
