DE102008033685A1 - Device for collecting rainwater in vehicle, has receiver element which is arranged on car body, where receiver element is connected with water collecting tank by connection, and connection contains another device for liquid additive - Google Patents

Abstract

The device comprises a receiver element which is arranged on a car body. The receiver element is connected with a water collecting tank by a connection having a filter. The connection contains another device for a liquid additive, particularly in the form of a frost protection unit or cleaning unit. The additive is supplied to the rainwater in the water collecting tank in a concentrate form, and the additive is stored in a separate container. The concentration of the additive in the water collecting tank, is measured by a sensor.

Description

The The invention relates to a device for the use of industrial water in one Windscreen washer system of a motor vehicle. Task of the windscreen washer system is to free the outer panes of motor vehicles from To keep liquid and dirt. The mechanical work the wiper blade is supported by mop water, which over nozzles on the swept by the wiper blade Area of the disc is sprayed on. The used for it Wiping water is usually with a detergent or antifreeze added to the mechanical work of the wiper blade chemically to assist and freeze the mop water too prevent. The mop water with the cleaning and antifreeze is doing in a closable and refillable Container carried in the vehicle. For filling This container must first awkward the Bonnet and the closure of the container open and carefully closed again after filling become. This manual, regular filling can be reduced by collecting rainwater.

The DE 27 00 926 A1 describes a refill system for vehicle windshield washer systems wherein the refill system is manufactured by a water receiver and filter or siphon and connected to the respective windshield washer tanks in the vehicles.

Also the DE 43 30 724 A1 describes a windscreen washer system for motor vehicles with a container for the washing liquid, from which the washing liquid by means of a water pump via hose lines to the washing nozzles can be fed, and with a wiper motor driven wiper arms to which wiper blades are attached, wherein the collecting devices for sprayed onto the discs washing liquid and for rain water, which makes up the collected washing liquid, into the liquid container is leitbar.

The German utility model DE 297 16 657 U1 describes a device for collecting rain water on motor vehicles, with a rainwater receiving water supply or water collection device and connected to the water collection device Wasserabführvorrichtung, the drain is connected via a hose to the water reservoir.

The German utility model DE 298 06 320 U1 describes a device for collecting rainwater on motor vehicles with at least one to be arranged on a vehicle body, for example at a local gutter or at a water outlet collecting element which is connected via a filter having a connection with a water collection or storage tank, wherein in the connection at least one is provided on the water flow responsive sensor which controls the addition of an additive, preferably an additive in the form of antifreeze and / or cleaning agent to the water flow and / or the reservoir.

The The present invention addresses the problem of that the collected and filtered rainwater is not immediately available for the spraying on the disc is ready for use, but first with a liquid additive, preferably in the form of an antifreeze and / or cleaning agent, must be added. This antifreeze and / or detergent must be in a space-demanding tank be carried along.

The Invention is based on the general idea that by carrying a concentrate of antifreeze and / or cleaning the Space-consuming tank for this addition more compact and smaller with the same mixing capacity can. This means that essential through the concentrated addition more collected rainwater in ready-to-use mop water can be recycled and thus the Auffüllzyklen for Refilling the concentrated additive considerably longer become. This in turn leads to an increase in user comfort, because the driver rarely with elaborate refills stopped during an inspection then in the workshop can be done.

In In a preferred embodiment, the concentrated Addition in a separate container near the water collection tank stored. Small amounts of concentrated additive are added to the Targeted water collection tank.

In In another embodiment, the concentration of the Extra measured in the water collection tank by a sensor. Only at an optimal concentration of the additive in the water collection tank is the wiping result optimal. A too low concentration weakens the cleaner. Too high a concentration leads to disturbing streaks on the disk.

In a preferred embodiment, falls below a limit value of the concentration of the additive introduced from the separate container for the addition in the water collection tank. For this purpose, the output signal of the electronic fluid sensor triggers a control electronics in the vehicle. If the sensor detects an undershooting of a limit value of the concentration, the control electronics activates a micropump, which introduces the additive from the separate container into the water collection tank until the for optimal wiper operation required additional concentration in the water collection tank is reached.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 2700926 A1 [0002]
• - DE 4330724 A1 [0003]
• - DE 29716657 U1 [0004]
• - DE 29806320 U1 [0005]

Claims (4)

Device for collecting rainwater in motor vehicles with at least one collecting element to be arranged on a vehicle body, which is connected to a water collecting tank via a connection having at least one filter and the connection is at least one further device for adding a liquid additive, preferably in the form of an antifreeze and / or or detergent, characterized in that the additive is supplied to the rainwater in the water collection tank as a concentrate. Device according to claim 1, characterized that the additive is stored in a separate container. Device according to claims 1 and 2, characterized that the concentration of the additive in the water collection tank through a sensor is measured. Device according to claims 1 and 3, characterized that falls below a limit of the concentration of Add this from the separate container for the additive is introduced into the water collection tank.