CH654799A5

CH654799A5 - Device on a car for de-icing car windows

Info

Publication number: CH654799A5
Application number: CH44985A
Authority: CH
Inventors: Rashpal Bains
Original assignee: Rashpal Bains
Priority date: 1985-02-02
Filing date: 1985-02-02
Publication date: 1986-03-14

Abstract

In order to effectively de-ice car windows with the aid of the window washing device, the washing fluid is carried to the spray nozzles (6B) via a heat exchanger (1). The washing fluid is conducted through the heat exchanger (1) by means of a coiled pipe (1A). In order to achieve rapid heating of the washing fluid after the engine has started, the heat exchanger (1) is installed in the preheating channel (4, 4A) between outlet collector (2) and air filter (5). <IMAGE>

Description

       

  
 

**WARNUNG** Anfang DESC Feld konnte Ende CLMS uberlappen **.

 



   PATENTANSPRÜCHE
1. Vorrichtung an einem Auto zum Enteisen von Autoscheiben, dadurch gekennzeichnet, dass in den Vorwärmeluftkanal zwischen Auslasskollektor und Luftfilter ein Wärmetauscher (1) eingeschaltet ist, durch welchen ein an die Scheibenwascherpumpe (7) angeschlossenes Heizelement (IA) hindurchgeführt ist, so dass kurz nach dem Starten des Motors die durch das Heizelement fliessende Scheibenwaschflüssigkeit vom Vorwärmeluftstrom erwärmt wird.



   2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Heizelement (IA) in einem im Vorwärmekanal eingeschalteten Gehäuse liegt.



   Das Enteisen der Autoscheiben von im Freien parkierten Autos ist ein altes Problem. Bei tiefen Aussentemperaturen ist dies mittels der normalen Scheibenwaschanlage nicht möglich, auch wenn die Waschflüssigkeit hinreichend Frostschutzmittel enthält. Das in den meisten Fällen angewendete mechanische Abkratzen ist mühsam und oft auch nicht von   nachhaltiger    Wirkung, weil sich beim Fahren rasch wieder eine neue Reifschicht auf der stark abgekühlten Scheibe bildet.



   Die Erfindung stellt sich die Aufgabe, hier Abhilfe zu schaffen, und schlägt vor, die Scheibenwaschflüssigkeit unter Verwendung eines Wärmetauschers mittels der zum Luftfilter geführten, vom Auslasskollektor erwärmten Luft zu heizen und die so erwärmte
Flüssigkeit auf die Scheibe zu sprühen. Daneben wird durch die erwärmte Scheibenwaschflüssigkeit auch hartnäckiger Schmutz wirkungsvoll beseitigt.



   Die wesentlichen Merkmale der Erfindung sind in der Kennzeichnung des Anspruches 1 definiert. Anhand der Zeichnung wird ein Ausführungsbeispiel des Erfindungsgegenstandes näher erläutert.



   Mit   list    das Gehäuse eines Wärmetauschers bezeichnet, das in den Luftstrom eingeschaltet ist. der von einer den Auslasskollektor umgebenden Verschaltung 2 zum Luftfilter 5 führt.



   Der Auslasskollektor ist das Sammelrohr, in welchem die aus den einzelnen Zylindern kommenden heissen Verbrennungsgase gesammelt werden, wo somit unmittelbar nach dem Inbetriebsetzen des Motors hohe Temperaturen auftreten. Der Wärmetauscher ist über die beiden Rohrstücke 4, 4A in den Vorwärmekanal eingeschaltet. Eine Rohrschlange aus gut wärmeleitendem Material, vorzugsweise Kupfer. ist bei 6 und 6A in die Leitung für die Scheibenwaschflüssigkeit eingeführt. Etwa 2 min nach dem Starten des Motors strömt hinreichend heisse Luft durch den Wärmetauscher, um die durch die Rohrschlange   1A    geleitete   Scheibenwaschfiüssig-    keit so zu erwärmen. dass das Eis auf der Scheibe entfernt werden kann. Die Scheibenwaschanlage besteht wie üblich aus der über den Schalter 7A einzuschaltenden Pumpe 7, dem Reservoir 8 und den Spritzdüsen 6B.



   Die Vorwärmekanalklappe 3 vor dem Luftfilter 5 wird durch ein von einem Thermostat gesteuertes Ventil 3A betätigt, wobei zu Beginn diese Klappe voll geöffnet ist und bei steigender Temperatur des Motors sukzessive geschlossen wird; damit wird auch die Temperatur der zur Scheibe gelangenden Waschflüssigkeit im gewünschten Sinne geregelt. 



  
 

** WARNING ** beginning of DESC field could overlap end of CLMS **.

 



   PATENT CLAIMS
1. Device on a car for defrosting car windows, characterized in that a heat exchanger (1) is switched on in the preheat air duct between the outlet collector and the air filter, through which a heating element (IA) connected to the window washer pump (7) is passed, so that it is short After starting the engine, the windshield washer fluid flowing through the heating element is heated by the preheating air flow.



   2. Device according to claim 1, characterized in that the heating element (IA) lies in a housing switched on in the preheating duct.



   De-icing car windows from cars parked outdoors is an old problem. At low outside temperatures, this is not possible with the normal windscreen washer, even if the washing liquid contains sufficient antifreeze. The mechanical scraping used in most cases is tedious and often not sustainable, because a new layer of frost quickly forms on the strongly cooled disc when driving.



   The object of the invention is to remedy this, and proposes to heat the windshield washer fluid using a heat exchanger by means of the air which is led to the air filter and is heated by the outlet collector and which is heated in this way
Spray liquid on the disc. The heated windscreen washer fluid also effectively removes stubborn dirt.



   The essential features of the invention are defined in the characterizing part of claim 1. An exemplary embodiment of the subject matter of the invention is explained in more detail with reference to the drawing.



   With list the housing of a heat exchanger designated, which is switched on in the air flow. which leads from an interconnection 2 surrounding the outlet collector to the air filter 5.



   The outlet collector is the collector pipe in which the hot combustion gases coming from the individual cylinders are collected, where high temperatures occur immediately after the engine is started. The heat exchanger is switched on in the preheating duct via the two pipe sections 4, 4A. A coil of good heat-conducting material, preferably copper. is inserted into the windscreen washer fluid line at 6 and 6A. About 2 minutes after starting the engine, sufficiently hot air flows through the heat exchanger to heat the windshield washer fluid passed through the coil 1A. that the ice on the disc can be removed. As usual, the windscreen washer system consists of the pump 7 to be switched on via the switch 7A, the reservoir 8 and the spray nozzles 6B.



   The preheating duct flap 3 in front of the air filter 5 is actuated by a valve 3A controlled by a thermostat, this flap being fully open at the beginning and being closed successively as the temperature of the motor increases; this also regulates the temperature of the washing liquid reaching the pane in the desired sense.

Claims

PATENT CLAIMS 1. Device on a car for defrosting car windows, characterized in that a heat exchanger (1) is switched on in the preheat air duct between the outlet collector and the air filter, through which a heating element (IA) connected to the window washer pump (7) is passed, so that it is short After starting the engine, the windshield washer fluid flowing through the heating element is heated by the preheating air flow.

2. Device according to claim 1, characterized in that the heating element (IA) lies in a housing switched on in the preheating duct.

De-icing car windows from cars parked outdoors is an old problem. At low outside temperatures, this is not possible with the normal windscreen washer, even if the washing liquid contains sufficient antifreeze. The mechanical scraping used in most cases is tedious and often not sustainable, because a new layer of frost quickly forms on the strongly cooled disc when driving.

The object of the invention is to remedy this, and proposes to heat the windshield washer fluid using a heat exchanger by means of the air which is led to the air filter and is heated by the outlet collector and which is heated in this way Spray liquid on the disc. The heated windscreen washer fluid also effectively removes stubborn dirt.

The essential features of the invention are defined in the characterizing part of claim 1. An exemplary embodiment of the subject matter of the invention is explained in more detail with reference to the drawing.

With list the housing of a heat exchanger designated, which is switched on in the air flow. which leads from a circuit 2 surrounding the outlet collector to the air filter 5.

The outlet collector is the collector pipe in which the hot combustion gases coming from the individual cylinders are collected, where high temperatures occur immediately after the engine is started. The heat exchanger is switched into the preheating duct via the two pipe sections 4, 4A. A coil of good heat-conducting material, preferably copper. is inserted into the washer fluid line at 6 and 6A. About 2 minutes after starting the engine, sufficiently hot air flows through the heat exchanger to heat the windshield washer fluid passed through the coil 1A. that the ice on the disc can be removed. As usual, the windscreen washer system consists of the pump 7 to be switched on via the switch 7A, the reservoir 8 and the spray nozzles 6B.

The preheating duct flap 3 in front of the air filter 5 is actuated by a valve 3A controlled by a thermostat, this flap being fully open at the beginning and being closed successively as the temperature of the motor increases; this also regulates the temperature of the washing liquid reaching the pane in the desired sense. ** WARNING ** End of CLMS field could overlap beginning of DESC **.