Precautions for electric heaters

Table of contents
Definition of electric heater
Classification
Precautions

An electric heater is a product that converts electric energy into heat energy. It can be widely used in residences, offices, hotels, shopping malls, hospitals, and other places. It is mainly divided into three types: convection type, energy storage type, and microcirculation type. [1]

Its working principle is to use the electric heating tube as the heating element to heat the air through heating and convection. It has the advantages of no emission, no pollution, no noise, easy to use, instant heating when power is on, and stops when power is off. Even in the north where there is central heating, the electric heater can also assist heating.

1 Type division

Electric heater
Electric heaters include three forms: convection, energy storage, and microcirculation:
The convection electric heater uses the electric heating tube as the heating element and heats the air through heating and convection. It is small in size, quick to start, fast in temperature rise, precise in control, and easy to install and maintain; the energy storage type electric heater uses energy storage materials. It can use energy storage when the electricity price is low at night and release heat during the day, but it has a large volume and poor heating comfort. A new type of electric heater that circulates to increase the indoor temperature. It operates reliably and has relatively high heating efficiency.

Among these three kinds of electric heaters, convection electric heaters are the most commonly used, and almost all the civilian electric heaters we usually see in home appliance stores are convection electric heaters.

The best-selling electric heater stems from its many advantages:
Because electricity is clean energy, convection electric heaters have no emissions, no pollution, no noise, and are environmentally friendly; The heater can also be used for auxiliary heating.

Some smart models can also set the timing and temperature, and can move and adjust freely in each room; it is highly efficient and energy-saving, with an electric energy conversion rate of over 99%, and a thermal energy utilization rate of up to 100%, which can save energy to the greatest extent; its purchase and The operating costs are relatively low metering charges, and there is no problem of difficulty in central heating charges.

Electric heaters can be divided into oil-based electric heaters, fan heaters, and heat radiation heaters in terms of appearance: oil-based electric heaters are the most common electric heaters on the market, and their common shape is very similar to that of radiators at home. Similarly; heaters are divided into two types: bathroom type and non-bathroom type. Bathroom heaters are small in size, strong in air supply, quickly rise in temperature, and adopt a fully enclosed design to ensure safety during use; 1. The appearance of the wall heater is very similar to that of an air conditioner; the appearance of the heat radiation heater is very similar to that of an electric fan, except that the fan leaf and the rear grille are replaced by electric heating components and arc reflectors.

2 Notes

Contraindications
Electric heater
Drying: For electric heaters without drying racks, do not cover the heaters with clothes. In this way, on the one hand, scorched clothes can be avoided, and on the other hand, the pressure of the heat transfer oil inside the heater shell can be prevented from rising, causing hot oil leakage and shell bursting.

Installation: Even if it is a waterproof heater, do not get too close to the bathtub, washbasin, or shower pool, and try to avoid spraying water directly on the bathroom heater when bathing. Never place a bathroom heater directly under an electrical outlet, as the updraft from the heater can easily damage the outlet.

Roasting: Long-term close contact with heating equipment such as electric heaters, electric blankets, and hand warmers in winter. After the skin is exposed to an environment higher than the body surface temperature for a long time, brown reticular spots of different shades will appear on the arms and face. piece.

These plaques belong to burning erythema. If not treated in time, the blood vessels in the skin may expand and proliferate, and the skin will age prematurely. Patients should reduce or stop exposure to heat sources and adjust slowly. In winter, they must pay special attention to hydrating and moisturizing the skin, and drink plenty of water at ordinary times.

use common sense

1. Common sense of electric heater

Electric heater
Using an electric heater in winter can keep the room warm. In order to keep the indoor temperature suitable for the human body, the general temperature should be 17-19°C, 18-20°C for children’s rooms, and 14-16°C for bedrooms. Most of today’s electric heaters have timing and constant temperature control. When the heating room reaches an appropriate temperature, it stops heating, which can reduce unnecessary waste of electric energy.

There are many types of household electric heaters. When purchasing, please choose the appropriate model according to your application. The reflective type can be used for partial heating, and the convection type can be used for all heating, which uses natural convection to warm every corner of the room, and the fan type uses fan motors to force the convection of warm air. In addition, there are domestic stoves that use kerosene as fuel. However, special attention should be paid to safety when using the heater, especially if there are infants and young children at home, to avoid accidental burns.

2. Daily maintenance of electric heaters

Heat dissipation: In order to make the electric heater play a better heating role, make the body work normally, and prolong its service life, try to place the electric heater in a position that is conducive to air circulation and heat dissipation.

Cleaning: It is best to use a soft cloth with household detergent or soapy water to scrub, and do not use gasoline, toluene, and other solvents to avoid damage to the shell, affecting the appearance or rusting.

Storage: When the weather is warm and you don’t need to use the electric heater, first wipe clean and dry the body and then store it. Do not store it in a humid environment, but store it upright in a dry place for use in the next year.

Talk about the correct use and maintenance of the electric oil heater, because if this thing is not used correctly, there will be safety hazards.

The electric oil heating heater is widely welcomed because of its large heating area and the ability to effectively increase indoor temperature. The heating principle and electrical control of this kind of heater are different from other types of heaters, such as halogen heaters, electric ovens, etc. Many consumers will not use it correctly, so the method of use is very important.

1. Use the thermostat correctly

The electric oil heater does not have a thermostat so the surface temperature of the heater shell can be adjusted at will (below 110°C). During normal operation, the thermostat should not always be set at the highest level, otherwise, when the surface temperature of the heater is close to 110°C, the thermostat will not be easy to operate, and long-term high-temperature operation will easily cause burnout and aging of internal components or damage the protection.

Therefore, when using the electric oil heater for the first time, set the thermostat in an appropriate position. When adjusting, first turn the thermostat knob clockwise to the maximum position, turn on the two-speed power switch, and the whole machine is in the maximum output state, heat up for about 5 minutes, and lightly pat the upper surface of the shell with the back of your hand. Feeling that the temperature is suitable, turn the knob counterclockwise slightly until there is a crisp sound of the contacts popping off, and at the same time the power indicator light on the power switch goes out, then turn the knob clockwise slightly at a small angle, so as not to make the contacts Click to close.

After such adjustment, the heater can provide people with a satisfactory temperature. When the shell surface is slightly hot, the temperature is about 85°C.

When the temperature of the heater shell is higher than the set temperature, the thermostat will automatically cut off the power supply to stop heating, and the heat stored inside will continue to be released outward. When the surface temperature drops by 15°C, the contacts of the thermostat will automatically close, and the temperature will rise when the power is turned on. When the temperature of the shell is higher than the set temperature, the power will be automatically turned off to stop heating. So again and again, the temperature is constant.

Second, the correct choice to use the power switch

The electric oil heating heater adopts two sets of sealed electric cathode heating tubes as heating elements, and the two sets of heating tubes correspond to two selection switches of two grades. Common heaters on the market are defined as 1500W and 2000W. Under the permitted conditions of the waiting line, the correct selection of the power gear can save electricity and reduce the line load.

When starting to turn on the heater or when the indoor temperature is low, turn on the two selection switches at the same time, the heater will heat up rapidly, and when the working temperature on the surface of the shell reaches the set temperature point, the thermostat will automatically cut off the power supply. At this time, the first or second gear should be selected. file power. When the thermostat is reset and energized, it uses lower power to heat and gradually increases the indoor temperature.

3. Pay attention to keeping the airtightness of the room

The electric oil heating heater raises the indoor temperature in the form of air convection, and the indoor temperature affects the on-off of the power supply. The indoor sealing is good, after the room temperature rises, the power-on heating time is short, and the cooling time is long, thus saving electricity.

4. Prohibition of coverage

The heater works normally, and the surface temperature of the shell is relatively high, which is generally set at about 90°C. The temperature control of the heater is realized by relying on the temperature-sensing deformation of the metal sheet of the thermostat in the mask.

If you wrap and cover the cooling fins in order to bake clothes, the temperature of the covered heat sinks will be significantly higher than the temperature felt by the bimetallic sheet on the surface, which is easy to scorch the clothes and may cause the heat conduction elements inside the heater shell to burn. damage. 5. It is forbidden to turn it upside down or put it down for heating

The shell of the heater is filled with special heat-conducting oil, and there is a certain pressure inside after heating. In order to ensure that the internal pressure is lower than 0.2Mpa during normal use, the amount of heat-conducting oil poured into the total volume accounts for about 70% of the total volume, and there is a large space inside. Inverted or laid down, the internal heating tube is exposed to the soil surface. In this case, the electric heating may cause over-burning and bursting, which may damage the heating tube. In this case, you must pay attention when using it.

3. How to place the oil-filled electric heater

Oil-filled electric heaters must be placed directly, not upside down. Because the oil-filled electric heater heats the heat transfer oil around the heating through the heat pipe at the lower end, the heat transfer oil flows in the pipe to transfer heat. If it is placed upside down, flat, or inclined, it will cause empty burning and burn out the heating tube.

4. Do not cover anything on the heater

The electric heater is a constant temperature heating element. Due to its high surface temperature, the surface of the electric heater cannot be covered with anything, otherwise, it will cause burn-out because the heat of the electric heater cannot be dissipated in time. When using a special drying rack to dry clothes, be sure to wring out the water to avoid water droplets in the control box of the electric heater causing danger (except for waterproof models).

5. What kind of requirements does the electric heater have for the power supply

The use of electric heaters must use a three-hole socket with a ground wire that meets the technical specifications. Never switch to a two-hole socket without a ground wire by yourself, because it is easy to generate static electricity, and sometimes it will feel like an electric hand, which is more dangerous.

In addition, the socket should not be located directly above the electric heater to prevent the heat from rising and scalding the power supply. Third, if there are electrical appliances that are prone to sudden changes in current and are more frequent, such as electric welders, impact drills, etc., used at the same time with the electric heater, it is easier to damage the electric heater, so attention should be paid to it. The plug board of the protection device or choose a regulated power supply.

Written by: FUJIREJA GROUP
The Exporter and Manufacturer of Heaters since 2003
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