RU32351U1 - Device for heated seats in cars - Google Patents

Description

DEVICE FOR LOWER HEATING IN CARS

The utility model relates to the field of electrotermins, namely, to the design of flexible low-temperature :: electric heaters designed to heat seats in cars: and cargo: cars in the cold season. In addition, this device can be used to maintain the operability of various equipment in the cold season, for example, when starting internal combustion engines of various overall dimensions.

A device is known under the name Flexible electric heater, which contains resistive elements in the form of parallel-mounted and electrically connected half-wires of an electrically conductive material placed between two layers of electrical insulating material, and current-carrying elements, where they are connected at opposite ends by short transverse conductive g with flat jumpers 1.

A technical solution under pressure is also known. A flexible electric heater, taken as a prototype, consisting of a resistive element made of corrosion-resistant steel with perforations located between layers of electrically-insulated material, and the location of the perforations forms a solid mesh structure, longitudinal longitudinal the edges of the tape are solid, and the perforations and longitudinal slots in the resistive tape are filled with a visco-plastic polymerizable 11 m dielectric composition ohm 2.

bark operational reliability, lack of regulation of the degree of heating of the resistive element, a large number of contacts1: com.

The task of creating the proposed technical solution is the development of a device for heating seats in cars, which has a high resistance element resistance, its indigestibility and temperature control.

The stated technical problem is solved in that in the known flexible electric heater containing a resistive element in the form of a tape of electrically conductive material placed between two layers of electrical insulating material, and current-conducting elements, the only thing is that the resistive element is made of nichrome wire wound on a flexible dielectric thread enclosed on top in an elastic dielectric, while resistive 1 element is electrically connected in series to a temperature sensor, which is a posit p, which is due to hastily matched: materials can automatically maintain a given temperature of the resistive element and make it practically irreplaceable. This is achieved due to the physical properties of the materials used in the manufacture of a posistor with a positive temperature coefficient. In addition, to adjust the temperature in the direction of decrease, the resistive element of the device is sequentially connected to the circuit through a variable resistor, used in automobiles to regulate the brightness of the backlight of combination devices.

Comparative analysis with the prototype allows us to state that the proposed technical solution is distinguished by the presence of new elements, such as irreplaceable 1 heating element, posistor, variable resistor. This technical solution is based on the use of the posistor principle, which corresponds to such a criterion of a utility model as novelty.

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Figure 1 shows the appearance of the device for heating, pasMemeHHoro in the seat cover.

Figure 2 shows the electrical circuit of the device.

A device for heating the seats in cars is placed on the inside of the seat covers 1 (Fig. 1) when a thin dielectric 2 is glued to the inside of the cover, in our case, 1 Mtxi varnish fabric, onto which a resistive element 3 is glued in the form of a sinusoid, made of nichrome wire with a diameter of 0.32 mm and a length of 100 mm, wound on a fiberglass thread. On top of this heating element is covered with a silicone shell 4 that can withstand temperature C, made, in our case, in the form of a tape. From above, the heating element is also closed by a thin dielectric: it is flashed at the edges with a cover. In series with the heating element is connected to the temperature sensor 5 (figure 2), made of a ceramic material of barium titanate with the addition of cesium. The amount of cesium regulates a given upper temperature limit of the heating element, upon reaching which the ohmic resistance of the temperature sensor becomes equal to infinity, and the supply of voltage to the heating element stops. The lower limit of the heating temperature of the resistive element is controlled by a variable resistor 6 located on the inside of the dashboard of the car. A device is connected for heating to the vehicle electrical system with connector 7 located in the lower right corner of the seat cover.

The device operates as follows.

When connecting the connector 7 (Fig. /) To the on-board network, the voltage through the temperature sensor 5 is supplied to the resistive heating element and through it closes to the car body. This is the case if the heating is carried out from the car battery.

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- 3 But the use of the indicated temperature sensor, which is a positioner, makes it possible to heat from 220 V, 127 V, and 24 V. In this case, only the heating time changes, and the second end of the heating element under: is connected to the corresponding network. In our case, the ohmic resistance of nichrome 100 mm long is 13 ohms. When connecting r: on-board network, equal to 12 V, the current strength will be equal to 1 ampere, i.e. the power of the heating element will be equal to 13 W, and after 30 seconds the entire silicone tape will warm up evenly to +50 C. To reduce TeMnepaTjfpy heating, you can use a variable resistor 6.

The use of the proposed technical solution makes it possible to achieve great flexibility of the heating element, its irresistibility and adjustment of both the lower and upper temperature limits.

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SOURCES OF INFORMATION

1. Patent N 2098927, 1996, cl. N05B 3, / 38

2. Certificate for PM of the Russian Federation N 24899, 2002, class. HB05 3/34 {prototype).

Claims (1)

A device for heating seats in cars containing a resistive element in the form of a tape of electrically conductive material placed between two layers of electrical insulating material, and current-carrying elements, characterized in that the resistive element is made of nichrome wire wound on a flexible dielectric thread enclosed in an elastic dielectric moreover, the resistive element is electrically connected in series to a temperature sensor with a positive temperature coefficient and a variable resistor.