Electrical Tea Market Overview: Construction and mechanism of action, selection criteria, Additional features, Manufacturers and prices
Photo by E. Morgunova
EEJ-1555 (BINATONE) ENEJ-1555 EXPRESS (BINATONE) boosts the current amount of water
Innovative Product: QuickHot Express Filter (Tefal)
Housings Teapot VT-1146 SR (Vitek) and VS-113 (Vitesse) from metal and plastic
Model- "Penguin" WK 1103 (SMILE)
PWK 1262 kettle (POLARIS) is made of glass
Models 1141 (Vitek) are decorated with flowers and can be different colors
Aluminum Kettle HD 4690 (Philips) Backlit Stand
Kettle WK 600 (Braun) with manual polishing stainless steel housing. Removable filter does not allow scale to fall into a cup
The housings of the KDS-103 and VS-107 (Vitesse) are made of stainless steel. Instrument power - 2.2 kW, capacity- 1.7 liters
The PWK 1559 TCM device (POLARIS) has a heating function
Thermal streams with a ring of stainless steel TP 3050 and TP4050 (BINATONE) volume 3 and 4l, respectively
HD 4686 kettle (Philips) has four modes: 40, 60, 80 and 100c
Set of stainless steel for breakfast TS KTN 9024 Si (Bork): Toaster and kettle in a single case
Bork.
Kettle KE CRN 9916 BK (Bork) with sound disconnection display, power- 2.4 kW
Tea is one of our favorite activities. Water boiling vessels have passed a long way of development: from the simplest samovars on wood fuel to electric kettles. The modern aggregate is one of the few small household appliances that do not throw as a faded toy, efforts, and use daily and several times. Therefore, it is necessary to approach his choice seriously.
The first electric kettle appeared at the end of the XIX. Externally, it practically did not differ from the predecessor, but the electric heating element was built under its bottom. A little later, engineers placed this element into a curved tube, which was lowered directly into the body of the device, into water. Inacontal, now the TEN is again hidden under the metal bottom.
Inside the vessel
Despite the fact that modern teapots are connected to the power grid, most of them can be called wireless. The fact is that the network wire is attached to the base-stand on which the kettle flask is installed. Electro-contact power flasks can be on the side or in the center of the stand. If contact on the side, you have to "aim" to put the flask on the stand; If in the center, then it is more convenient, since the flask can be placed from any position and rotate 360. The location of the contacts depends on the type of heating element used in the kettle.
Solns the kettle
To understand what a teapot "sings" less loudly, you need to figure out why he is noise at all. As soon as the TEN begins to heat up, numerous bubbles containing water vapor and air appear around it. They increase in the amount, gradually pop up and come into contact with not yet warmed water. Air and steam are cooled, pressure decreases, and under the weight of the water, the bubble "slams" - the noise is born. When the water is uniformly, the pressure inside the bubbles changes little, they stop "slamming", grow and pop up. The temperature of the water and steam when boiling is unchanged until complete bumping. This process is equally flowing at boiling water and in the usual kettle on the stove, and in the electric. But then the question arises: why does the electric kettle make noise much stronger than usual? To answer, you need to remember the laws of physics: the electric temperature of incandescent is higher, which means that heating is intensively, and the sound effect is brighter expressed. By the way, buying a kettle, keep in mind that the noise becomes louder with an increase in the area of the heating element, because more bubbles are formed. Therefore, models with a hidden heating element "louder" devices with a spiral. But at the same time, noise depends not only on the heating area. If you compare two kettles with hidden tenn, the same power and volume, there will be one that has a bottom less: it is heated intense, bubbles are formed faster. The abol surface warms slower, and bubbles behave not so actively. Choose that you like more: "Quickly and noisy" or "slowly and quiet."
Heating elements are open or hidden. For the first case, this is a helix inside the tank of the kettle, placed at the bottom: it can be seen if you look into the device. However, this option gradually goes into the past, which is explained by inconvenience. The same bottom under the spiral is difficult to clean, and on the spiral itself there is a lot of scale, and the kettle begins to malfunction in operation (sometimes it turns off ahead of time). It is noticeably reduced reliability, because water must completely close the heating element (and this is a considerable one- 0.3-0.5l), otherwise it is easy to burn it. Coupluses can be attributed to less noisy work than with a hidden element, and a low price.
The hidden heating element of the kettle is the same spiral, but hidden behind the metal plate, so it is not visible. The input device is permissible to boil even a completely small amount of water, literally one glass. In addition, in teapots with a hidden element, the water boils faster, because when turned on, the metal disk is rapidly heating under the entire thickness of water, which is above the disk and contacts it. When the bottom layer is heated, it rises, giving way to a colder place. The spiral heats the water only about himself, and then the heat is transferred in the water column horizontally, and then at all its height. The heat transfer speed is less than in metal, and the process lasts slightly longer than in the presence of a hidden item.
Some manufacturers depart from such schemes. So, a flat disk heating element is installed in Philips teapots (Netherlands), which not only heats up across the area, but, unlike the hidden spiral, it makes it with a greater speed, and, accordingly, water boils even faster.
What is the mechanism of action of an electric kettle? When you press the "On" button, a voltage is fed to the TEN, it heats up and transmits heat water. When boiling pairs intensively enters the automatic switch, the bimetallic plate of which is bent during heating. The plate opens the power contacts, and the unit turns off. It is because of this mechanism that the kettle's lid is tightly closed, otherwise the pairs will go out and its quantities (and heat) will not be enough for the desired plate deformation.
The circuit breaker will also turn off the device in the absence of water and if you remove the kettle with the stand. For this, the switch has at least two degrees of protection, and sometimes three. The first and basic is the newly described case with boiling when the bimetallic plate bended when heated and under its exposure through the pin is pressed the "On" button. If there is very little water in the kettle, or at all, and also if the first protection did not work, the chassis of the Tan and the second bimetallic plate is heated. It, like the first, bends when heated and blurries another contact, the kettle turns off. Emergency Situation, if not worked, both protection and Ten continues to heat up, the last provided means comes to the rescue: the pin starts to melt, its length is reduced, and the contact opens. This defense is the last in all senses, that is, the kettle will turn off, but never turns on.
We struggle with scale
Optimum volume
How the tea has been arranged and opened. Now it's time to go to the store for buying. What parameters to pay attention to? In addition to the type of heating element, these are three "whales" - volume, power and booster time.Devices are ready to accommodate 0.8-2l water, the most popular "size" - 1.5-1.7l. Choose based exclusively from your needs. The size of the kettle depends on the size: as a rule, the greater the volume, the higher the power is necessary for heating the fluid. It will viversify in the limits of 1.5-2.5 kW, but can reach 3 kW. The rise of this parameter increases the cost of the kettle, besides, high power can be unbearable for the electrical network of your apartment.
Given the volume and capacity, you can estimate the speed of boiling, which is very important for impatient and ever-hurrying people. The higher the power and less volume, the faster the water boils. Some manufacturers indicate the description of the time required for water boiling: 1l will boil for 3-4 minutes with a power of about 2 kW. If there are no such data, draw conclusions about the speed of the device you like based on the amount of volume and power, based on the ratio: 1 liter of cold water with a capacity of 1 kW will boil about 6 minutes. In practice, the figure can change slightly depending on the structural features of the aggregate.
What they are capable
By the way, kettles can not only boil water. For example, HD 4686 (Philips) is capable of improving it to 40, 60, 80 or 100 ° C. You only need to set the desired temperature, for example, 60s, and the device will turn off as soon as water is heated to this value.
Separately, you can mark the thermoses, or thermal, - TP-4050 (Binatone, UK), NC-PG30 (Panasonic, Japan). In essence, these are low-power heaters. Water in them is heated longer than in ordinary teapots, but also cools down long. This occurs due to the fact that the inner flask is made of stainless steel, and the outer corps is plastic. The NC-EH30 (Panasonic) is the choice of one of the four temperature modes: 60c- for baby food, 80c- for the preparation of Japanese tea, 90c- green, 98c-black tea and coffee.
The present revolution was the emergence of the QuickHot express thermofilter (Tefal, France), which combines a jug filter for water and a kettle. Cold tap water enters through the filter in the pump and flows through the heating element, and after 3С, it starts to pour into a cup. Moreover, only the required amount of water is processed now, for example, one cup, the rest of the water remains cold. This saves time, electricity and eliminates such a harmful re-boiling, in which desalted steam leaves the water, and therefore the concentration of salts increases in it. There is another similar express teapot - EEJ-1555 (Binatone). It does not filter water, but boils: 250 ml of hot fluid will be ready for less than 1 min.
Almost all teapots are equipped with an indicator of the connection to the network, which glows when the device is turned on. Liquid level scale is also an integral attribute of the modern machine. If you pour the water more than permissible, when boiling boiling can spill. The presence of a lid with a locking lock will exclude the possibility of a burn because it does not open when you will pour boiling water into a cup. The filter on the spout of the kettle is used to make a scale in the cup.
Foremented joy
Manufacturers produce plastic kettles of all colors of rainbow, elegant glass models and strict metal. Input, most teapots are made of plastic, because it turns out cheap and light instruments. They keep warm well, and the housing is heated not as much as the metal. But plastic is not very durable material. It is necessary to carefully treat the purchase of models of suspicious origin, since such products do not undergo certification, and therefore plastics may not comply with security requirements. Your health will be largely dependent: under the action of high temperatures, poor-quality plastic is distinguished by harmful substances.
More eco-friendly glass and metal housings. The indisputable plus of glass models is that they allow you to enjoy the magic transformation of water. Minus one glass can break.
Metal lovers in the kitchen are definitely not able to pass by a teapot with stainless steel housing. Such devices are very durable and hygienic. But they have weaknesses. First, the body is easily burning. Secondly, a different thermal expansion of the metal (housing) and plastic (water level indicator) parts with a temperature drop leads to the fact that after several years of operation, the kettle sometimes begins to flow at the joints of the metal and plastic. In the current case, the device is better to replace, not trying to repair, because even the most good glue at high temperatures impairs the quality of drinking water.
Manufacturers try to improve the appearance of the appliances, for example, add backlight. There are models that have only a base circumference or a body completely. BINATONE AKOMPANIA released Magic Thermocontrol kettle, changing the color of the backlight with different water temperature. Blue - up to 40s, yellow- up to 80c, red - 100c.
How much boiling water?
Teapots produce almost all firms producing household appliances: Bork, Bosch, Braun (all Germany), Binatone, Kenwood, Polaris, Scarlett (All United Kingdom), Moulinex, Tefal, Vitesk (all-France), Philips, Vitek IDR. The price depends on the type of heating element. The kettle with an open spiral costs 400-500 rubles, with hidden - from 600 rubles. Further cost is growing with increasing power and volume. The unit with a power of 2kW and the volume of 1.5l will cost 1-1,5 thousand rubles. Glass devices are sold in about 2 thousand rubles, and models with metal case for 2-3.5 thousand rubles.