RU136998U1 - DEVICE FOR REMOVING ICE AND SNOW FROM THE WIPER'S BRUSHES - Google Patents

Abstract

1. A device for removing ice and snow from wiper blades, containing conductive heating elements included in the design of the brushes, and a power source of conductive heating elements, characterized in that the power source is made in the form of a high-frequency generator with an inductor and with a magnetic circuit. The device according to claim 1, characterized in that it further comprises a programmable logic controller. The device according to any one of paragraphs. 1 and 2, characterized in that it further comprises at least one non-contact temperature sensor. The device according to claim 3, characterized in that the heating elements included in the design of the brushes are installed outside and / or inside the brushes. The device according to claim 4, characterized in that the inductor is installed under the windshield in the passenger compartment.

Description

The invention relates to the automotive industry, in particular, to wiper blades heating devices designed to prevent snow and ice from freezing on the glass cleaner brush, to protect the gear motor of the windshield and rear window cleaner from overloads when the brush is frozen to the glass.

A device for protecting wiper blades from icing by heating the brushes, which includes conductive heating elements (PNE) and a power supply (IP) PNE, in particular, the vehicle’s onboard power source, for example, a battery or a cigarette lighter. PNEs are wiper blades, which when energized, heat and warm the brush, freeing it from frost and / or snow, after which the wipers continue to operate in normal mode (RU 47302 U1, 08.27.2005).

The known device uses resistive heating of the PNE, which allows you to withstand a limited number of cycles of load on the brushes when they work in the reciprocating motion of the wiper due to the failure of the connectors of the contact wires, as well as due to mechanical damage to the connecting wires between the PNE installed outside the vehicle , and the PNE power supply inside the vehicle. The disadvantages of the known device include the fact that the brush holders themselves, that is, the PNE, when the heating is turned off, are iced and drifted with snow. Therefore, when the IP PNE is turned on, part of the energy is spent on useless heating of both the PNE itself and the wires connecting them to the brushes. Moreover, the heating of the brushes by the known device is not effective enough due to poor thermal contact of the surface of the brushes and the PNE with a limited heating area. A disadvantage of the known device is that its implementation is possible only if there is an electrical contact connection using electric wires and PNE connectors with IP.

As the closest analogue, a glass cleaner brush heating device was chosen, made in the form of a flexible module containing interconnected electrical insulating substrate, connecting elements and thermocouples coated with a protective layer, with an adhesive layer coated on one side of the electrical insulating substrate coated with a protective material. The insulating substrate is thickened along the entire length of the module, and the thermocouples are located along the substrate on its wide side adjacent to the side on which the adhesive layer is applied (see RF patent No. 111492, published on December 20, 2011).

The disadvantages of this device are its use exclusively in the presence of an electrical contact connection using electric wires and connectors, as well as its complex design. All this makes the device less reliable in use.

The objective of this utility model is to eliminate the above disadvantages.

The technical result of this utility model is to increase the reliability of the device while ensuring simplicity of design.

The technical result is ensured by the fact that the device for removing ice and snow from the wiper blades contains conductive heating elements included in the design of the brushes, and a power source for the conductive heating elements. In this case, the power source is made in the form of a high-frequency generator with an inductor and with a magnetic circuit.

In accordance with particular cases, the device may have the following structural elements.

A device for removing ice and snow from wiper blades further comprises a programmable logic controller. The device for removing ice and snow from the wiper blades further comprises at least one non-contact temperature sensor.

The heating elements included in the design of the brushes can be installed outside and / or inside the brushes.

The inductor is installed under the windshield in the passenger compartment.

The essence of this utility model is illustrated by a block diagram characterizing a particular case of the device and the principle of its operation.

The following elements are marked with positions in the flowchart:

1 - temperature sensor;

2 - programmable logic controller (PLC);

3 - RF generator;

4 - means of manual control of the RF generator.

The specified technical result is achieved by using a high-frequency generator 3 as a PNE power source, as a device that allows for contactless induction heating, using an inductor with a magnetic circuit, which serves to increase the heating efficiency. The inductor can be installed in the vehicle compartment under the windshield, in the area under the wiper blades. This also makes it possible to additionally warm the windshield of the car and the lower surfaces of the brushes from the side of the passenger compartment, regardless of whether the PNE is installed on the indicated surface or not, which increases the efficiency of the device when protecting the brushes from icing compared to the prototype device.

In special cases of implementation, PLC 2 is used to control and regulate the heating of PNEs, if the high-frequency generator 3 is made without an integrated PLC 2. This is due to the fact that with PLC 2 it is possible to set the necessary parameters of induction heating of PNEs for optimal brush heating depending on temperature air and / or surface temperature of the brushes, as well as, if necessary, depending on wind speed, which also increases the reliability of the proposed device.

In addition, in other special cases, the implementation of the device has non-contact temperature sensors 1.

The device operates as follows.

The wiper blades are made with internal and / or external PNEs and are mounted in the usual way on the TS wiper. Any conductive materials can be selected for PNE, for example, metallic, semiconductor, graphite, graphene or pyrographite, film, nanocoatings. PNEs are installed in any necessary and sufficient amount for heating the brushes. No connecting wires are required. In the passenger compartment of the vehicle, under the windshield, in the area under the wiper blades, an inductor with a magnetic circuit is installed, which is connected to a high-frequency generator. In this case, the inductor is installed so that the distance between it and the wiper blades is optimal for the necessary heating of the brushes. If it is necessary to protect the brushes from icing, the driver turns on the high-frequency generator using the manual control of the RF generator 4. The inductor heats the PNE by creating eddy currents in them and by means of heat transfer, the PNE heats the brushes that are self-cleaning from frost and / or snow, and allow the wipers to operate normally. The heating process can be controlled and / or controlled using a programmable logic controller 2 and temperature sensors 1, for example, optical pyrometers. In this case, the signal from the temperature sensors 1 is fed to a programmable logic controller 2, which provides a control signal to start the RF generator 3. When heating to a certain temperature, temperature sensors 1 provide a signal to the programmable logic controller 2, and it stops the operation of the RF generator 3. In addition, the inclusion, monitoring and control of the heated wiper blades can be done remotely, for example, if the driver wants, to prevent icing of the brushes for the period of parking il via the RF generator 4, the manual control means.

Utility Model Implementation Example

To test the possibility of removing ice from the wiper blades of the vehicle using the proposed device, the authors made prototype brushes heated by PNE from different conductive materials and different configurations, which were installed in different places of the brushes and in different numbers. PNEs were also installed inside and outside the brushes. The first experimental tests on a car were successful and showed the undoubted possibility of the operability of the proposed device when it is used in the fight against icing of TC wiper blades.

Claims (5)

1. A device for removing ice and snow from wiper blades, containing conductive heating elements included in the design of the brushes, and a power source of conductive heating elements, characterized in that the power source is made in the form of a high-frequency generator with an inductor and with a magnetic circuit. 2. The device according to claim 1, characterized in that it further comprises a programmable logic controller. 3. The device according to any one of paragraphs. 1 and 2, characterized in that it further comprises at least one non-contact temperature sensor. 4. The device according to claim 3, characterized in that the heating elements included in the design of the brushes are installed outside and / or inside the brushes. 5. The device according to claim 4, characterized in that the inductor is installed under the windshield in the passenger compartment.

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