#invertermicrowave

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Inverter microwave features

Microwave for many decades is one of the most popular kitchen appliances and is present in almost all kitchens. Of course, high consumer demand stimulates companies to constantly improve their models, increasing their competitiveness. Innovative technologies are one of the main ways to expand their functionality and increase efficiency, which are the main criteria for choosing any household appliances. Of course, the choice of microwave is no exception. Microwave is one of the most complex technical devices and is constantly improved by innovations. Use of Inverter technology for power control is one of the most significant in this segment. Of course, an inverter control has long been known and is actively used in air conditioners, refrigerators, etc. to control the engine speed. Inverto is translated from Latin to English as turn or change. Inverter electrical circuit converts direct current into alternating current, providing a smooth change of engine or compressor speed. This technology significantly reduces energy consumption and increases motor efficiency.

Inverter microwave

Panasonic became first company that used advantage of the inverter technology to control the power of a magnetron in a microwave oven. Today, this company offers a wide range of inverter microwaves. These models have a stylized Inverter inscription in the lower left corner of the front panel. The electronic power control system of the magnetron and the absence of a transformer are the main differences in the inverter microwave oven. This technology provides smooth adjustment of power by system of inverter control based on data from sensors. System forms the commands for change of operation mode during cooking the various dishes. For example, a steam sensor reduces output power at the start of vaporization process that prevents splashing inside the chamber due to intense boiling process. Traditional models always operate at the maximum output magnetron power. Power adjustment is achieved using pulsed operation mode. Therefore, the control system can only change power levels. Typically, the traditional models have three or four power levels, which are switched with the help of a timer. Gears commute the control elements on rear wall of magnetron in the necessary sequence. Changing the duration of the modulation affects the value of power, ensuring its control. Each period of the timer turn corresponds to modulation of high frequency oscillations during part of the cycle. Total duration modulation ultimately determines the overall power of the microwave. Inverter control provides much more gradations of power levels due to use the low-power waves. Such models consume less energy and reduce cooking time. Warming up and defrosting the foods also is significantly faster. Such thermal processing mode retains more vitamins and texture of foods. Additionally, inverter technology provides a reduction in the required space to accommodate technical components, increasing the chamber capacity.

3D cyclonic wave technology

Today, Panasonic continues to actively develop this direction. New 3D cyclonic wave technology is a convincing confirmation of this trend. The cyclonic wave distributes microwave energy gently in a three dimensional, providing a more uniform absorption of microwave power by foods surface. Today this technology is used in Panasonic 44L NN-ST785S cyclonic inverter microwave. Higher price is the only disadvantage of these models. This video demonstrates the Panasonic inverter microwave with cyclonic wave technology. Read the full article

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Technical values of microwave

Of course, microwave has long been one of the required attributes of a modern kitchen. High demand is accompanied by active competition among manufacturers. Today the market offers a wide range of models, the price, functionality and basic technical values of which vary significantly. All these factors are the main criteria when choosing the optimal microwave.

Microwave oven power

As a rule, power substantially depends on the model type. Usually, this value of the basic model varies from 500 to 1100 W. Of course, grill increases the required power up to 850-1500 W, depending the heater type. Additionally, convector fan increases power up to 1350- 2000 W. Microwave magnetron has several operation modes. Simple inexpensive models generally have 4 modes, more complex and expensive devices provide up to 10 modes.

The most powerful full HIGH mode provides a maximum power (100%). This mode is ideal for cooking a variety of sauces and beverage, roasting vegetables and fruits. The next MEDIUM / HIGH level corresponds to 70-75% of the maximum level and is ideal for the preparation of poultry, warming up of soups and garnishes. MEDIUM mode corresponds to 50% of the maximum possible power and is optimally suited for cooking a fish, various soups and roasting meat. MEDIUM / LOW level corresponds to only 25% of maximum power and is designed for defrosting foods, preparing hot appetizers, etc. MINIMUM power level uses 10% from maximum power and is very convenient for warming up of sensitive foods, for example, asparagus, tomatoes, strawberries, etc or to maintain the finished dish in a hot state. Modern inverter microwave ovens use more advanced inverter control, which provides a much larger number of power levels. The optimum power value for different modes: - 80 -150 W - for keeping warm; - 170 - 300 W - defrosting; - 400 - 500 W - quick defrosting; - 800 W and above - cooking.

Capacity

Microwave ovens are conventionally divided by capacity on following groups. Up to 0,7 cu ft or 20 liters. These models are suitable for small families mainly for warming up. Such microwave accommodates only a small chicken. But the grill in small models is usually absent. From 0,7 to 1 cu ft or from 20 to 28 liters. These models are the most popular. They are ideal for simultaneously warming up of two small plates or cooking medium-size portions. They are good suited for a family of 3 or 4 people. These models are usually equipped with grill and convection function, and provide cooking an average goose. From 1 to 1,5 cu ft or from 28 to 42 liters. These models provide cooking the most varied dishes and are well suited as an alternative to oven.

Coating the chamber surface

Today, manufacturers use as a coating the enamel, heat-resistant steel, special compounds (bioceramics) and Teflon. Each of them has its pros and cons, which affect the cost, care, service life, etc.

Controls

Modern models use a mechanical, push-button or touch control. Mechanical type is the easiest. Two dials provide power adjustment and setting a timer.

Mechanical control is the simple, reliable and cheap. But it did not provides the required accuracy of installation time and eliminates the programming possibility. Buttons are less reliable compared to mechanical dials, but is more reliable compared to touch panel. They provide simplified programming and often complement the dials or touch panel. Touch control has a stylish design and provides a programming function the cooking process.

Many modern models have a navigation system on the control panel that highlights using LED the desired button and offer a list of parameters for programming. Additionally, the absence of protrusions simplifies care. Some modern expensive smart models support voice control with Google Home and Amazon Alexa.

Such model was introduced by Whirlpool at CES 2018. Read the full article

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Microwave choice

In 1945, Percy Lebaron Spencer invented the first microwave oven. He patented a cooking method using electromagnetic waves. The first device was manufactured in 1947. Its weight exceeded 660 lb. This model was called Radarange. Today the name of the inventor is listed in the American National Inventors Hall of Fame (NIHF). At the end of the last century, some consumers had distrust of microwave ovens due to doubts about the harmlessness of the microwave radiation of a magnetron. But the results of numerous examinations proved their complete safety for health because of the reliable door screening and today this aspect is absent. But, of course, microwave cooking has some special features. The impossibility of using metal utensil was their second significant drawback. But today the market offers a huge range of microwave cookware and this problem has also disappeared. Today, a microwave is one of the most popular household appliances in any modern kitchen. High consumer demand is traditionally accompanied by fierce competition among manufacturers. Companies are constantly improving models, expanding their functionality. Today the market offers a wide range of models, the functionality, technical values and price of which is significantly different. Therefore, even a simplified classification can simplify the selection of the optimal model. Built-in models of household appliances are a popular trend for several decades. Therefore, companies are constantly offering such new models. Microwaves are no exception. Their installation is simple and can be performed independently, without the involvement of specialists. The video at the end demonstrates this process. Modern microwave ovens can provide six cooking methods. They can use only the microwaves, the microwaves with steam or grill, convection and convection with grill.

Solo

These models use only the microwaves and are designed for defrosting, cooking simple dishes and their warming-up. Cooking in microwave is similar to traditional cooking in a small amount of boiling water. Functions of baking and roasting are not available. But today the Internet offers recipes that allow the user to successfully bake and roast even in the base models. The controls include mechanical rotary dials, electronic buttons and a touch panels. Controls practically does not affect the model cost. These controls provide mode selection, setup of power and operating time. Mechanical rotary dials are usually more reliable and durable compared to sensor panels or buttons. The countdown and the current process information is displayed on a small screen. Many models have a lock mode from children. A list of the main technical values includes dimensions, power, diameter of rotating stand for cookware and the chamber internal capacity. Warming up of food for one person requires chamber capacity of about 0,3 cu ft or 8 liters. The capacity from 0,56 to 0,7 cu ft (16-20 liters) is sufficient for warming up of two servings. Capacity of some models reaches 1,4 cu ft (40 liters). It allows the user to cook Christmas turkey or goose. Lower weight limit of food is about 200 grams. Chambers have also the maximum weight limits of foods depending on its capacity. For example, the model with the working chamber of 0,85 cu ft (24 liters) is calculated on the maximum weight of 8,8 lb or 4 kg.

Microwave with grill

Grill is designed for roasting food. The operation of grill in microwave is similar to the oven. Grill is heated up to 392 °F – 482 °F or 200 °C – 250 °C. High temperature provides formation of a crisp during cooking. The grill mode is designed for a fairly long time, which reaches 99 minutes. Grills of modern microwave use ceramic, quartz or electric heating elements.

Microwave with convection

Convection principle is based on the heat movement from the area with higher temperature to area with lower temperature. This process is accompanied by an exchange of kinetic energy between the particles. From a technical point of view, the convection in microwave provides blowing the food by hot air with the help of a fan, which is usually located behind the back wall. This is called a forced convection. Such process is similar to cooking on a skewer. Convection provides the ideal conditions for baking from dough, for cooking chicken and meat, etc. Convection function partially duplicates the oven functions.

Multi-function models

These models are the most expensive. They combine a large range of functions in a single device. Grill, convection, pressure cooker, many additional modes and other technical solutions for cooking provide the impressive functionality of such models. The steaming function is usually implemented using a steaming double tray. Water is poured to the bottom, foods are placed on the tray and bowl closes by cover. Such steamer is well suited for the periodic cooking the small portions of diet food. But, of course, it`s much less functional compared to freestanding multi level steamer. The model with a full set of functions partially replaces the convection oven and aero grill, providing significant savings due to the cost of kitchen equipment. In addition, the cooking time and energy consumption in such models is much lower. For example, the energy saving reaches 50-70% compared to electric oven. High price, large size and weight are their main disadvantages. The standard warranty period is typically one year. More expensive models have a warranty of 3 years. But in general, the service life of modern microwave is from 5 to 8 years.

Inverter microwaves

Inverter technology is called Inverter Combination Cooking. Ii`s a unique development of Panasonic Company that today is implemented in many Panasonic microwaves. Technology provides smooth adjustment power based on data from sensors. This system forms the commands for change of operation mode during cooking the various dishes. For example, the steam sensor reduces output power at the start of vaporization process, preventing splashing inside the chamber due to intense boiling process. Thus, these models may well be classified as Smart. These models consume less energy and reduce cooking time. Heating and defrosting the food also is carried out significantly faster. Inverter technology provides a reduction of required space for technical components that increases chamber capacity. Read the full article

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