Heater

 

(57) Abstract:

The invention relates to the field of electrothermics, namely to electric heaters. The heater includes an outer and inner surround the electrodes, the conductive layer and the conductors. The electrodes and the conductive layer is made in the form of consecutively alternating layers of equal area. The inner electrode on all sides is covered with a conductive layer comprising conductive particles, separated by a dielectric sheath. Dielectric sheath consists of a composition of carbon black, salt and liquid, which has a resistance of 3 Ohms/cm3. The use of the invention allows to simplify and reduce the cost of construction of the heater, its use improves the environment. 2 Il.

The invention relates to the field of electrothermics, namely to electric heaters, and can be used in industry, construction, housing and utilities, agriculture, engineering, medicine, etc.

Known chemical heating elements for heating electricity produced from the base material on an organic basis, such as graphite, and St is the H3PO4[1].

As a prototype of the invention selected flexible polymer heater [2] . The heater includes a substrate made of fabric with two fixed along the edges of the conductors. The substrate is impregnated with a layer of a conductive composition containing, by weight. %: polymethylsiloxanes lacquer 42,2-43,65; natural graphite 11,47-14,41; carbon black furnace of 1.08-1.15 and an organic solvent else. The heater is designed for heating service and medical practice. The heater operates at 1.5V-36 B.

It is known that external influences lead to a slow destruction of the heating surfaces created on a polymer basis. Heaters of materials based on organic can only be performed with very low power density - up to 0.03 W/cm and a low temperature heat. The disadvantages of organic heaters is that the decomposition process causes intense smell of chemicals and harmful to health, which limits the use of such heaters in homes.

The invention aims at eliminating these drawbacks, allows easy and cheap to create heaters wide application.

In Fig. 1 shows a diagram of the heating of the insulation coating 4 and the leads 5.

In Fig.2 shows the production version of the heater, where the external electrode 1, the internal electrode 2 and the conductive layer 3 made in the form of consecutively alternating layers of equal area, the heater has an insulating coating 4 and the contact 5.

In both cases, the heater of the internal electrode 2 on all sides is covered with a conductive layer 3 comprising conductive particles, separated by a dielectric sheath, consisting of a composition of carbon black, salt and liquid, which has a resistance of 3 Ohms/cm3.

The conductive layer 3 may be made in the form of paint, which is a mixture of carbon black (soot), salt and water. As salt can be used as table salt NaCl and other salts such as KCl, Al2SO4, CuSO4, CeSO4and other

After drying and polymerization of the conductive layer 3 has a solid-phase state, and upon reaching the preset maximum temperature remains, as are the electrodes, environmentally friendly and fire-safe environment.

Insulation coating made by known methods, for example, the heater may be covered outside dielectric parry the range of 1 to 20 A at power 10-200 watts depending on the size of the heater and the composition of the conductive paint, when this paint withstands power density up to 1.5 - 2 watts/cm2< / BR>
The heater may be made of a rigid, flexible and soft design.

The heater containing the outer and inner surround the electrodes, the conductive layer and the conductors, characterized in that the electrodes and the conductive layer is made in the form of consecutively alternating layers of equal area, the inner electrode on all sides is covered with a conductive layer comprising conductive particles, separated by a dielectric sheath, consisting of a composition of carbon black, salt and liquid, which has a resistance of 3 Ohms/cm3.

 

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