The invention relates to a freezing protection device (1) for a vehicle treatment system having a fluid reservoir assembly (4) for holding a fluid (7) and having a treatment apparatus (9), which has an outlet opening (11) for the fluid (7). The freezing protection device (1) comprises a first line (2.1), which provides a fluid connection from the fluid reservoir assembly (4) to the outlet opening (11) in a flow direction (DF), and a first pump (3.1), by means of which the fluid (7) can be conveyed at a second pressure (p2) from the fluid reservoir assembly (4) into the first line (2.1) in an operating mode. The freezing protection device (1) also comprises a second line (2.2), which provides a fluid connection from the fluid reservoir assembly (4) to an outlet-opening-side portion (13) of the first line (2.1), a first blocking element (5) being arranged in the second line (2.2), and a second pump (3.2), by means of which the fluid (7) can be conveyed at a first pressure (p1) into the second line (2.2). The freezing protection device (1) is characterized in that the first blocking element (5) is designed in such a way that the first blocking element is open in a freezing protection mode, in which the second pressure (p2) is greater than the first pressure (p1), such that the fluid (7) enters the first line (2.1) from the second line (2.2) and can be at least partially returned to the fluid reservoir assembly (4) via the first line (2.1) against the flow direction (DF'). The invention further relates to a freezing protection method for a vehicle treatment system.
FROSTSCHUTZVORRICHTUNG UND FROSTSCHUTZVERFAHREN FÜR EINE FAHRZEUG-BEHANDLUNGSANLAGE
FREEZING PROTECTION DEVICE AND FREEZING PROTECTION METHOD FOR A VEHICLE TREATMENT SYSTEM
DISPOSITIF ANTIGEL ET PROCÉDÉ ANTIGEL POUR UNE INSTALLATION DE TRAITEMENT DE VEHICULES
2021-07-28
Patent
Elektronische Ressource
Deutsch
IPC: | B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR , Warten, Reinigen, Instandsetzen, Unterstützen, Anheben oder Rangieren von Fahrzeugen, soweit nicht anderweitig vorgesehen |
FROSTSCHUTZVORRICHTUNG UND FROSTSCHUTZVERFAHREN FÜR EINE FAHRZEUG-BEHANDLUNGSANLAGE
Europäisches Patentamt | 2019
|Frostschutzvorrichtung und Frostschutzverfahren für eine Fahrzeug-Behandlungsanlage
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