DE1904714A1 - Tap for the heating circuit of a vehicle - Google Patents

Description

PATENTANWÄLTE β ° 02 augsburggöggingen, December 30th, 1969

v. EidiendorfF-Strasse 10

DR. ING. E. LIEBAU UnserZe.chen Dr.Lb/s Az 3 R 7464

a. . - _. . (Please specify when replying;

DIPUTING. G.LIEBAU 19047Ί4

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Directed by Nationale des Uslnes Renault 8/10 Avenue Emile Zola Billancourt (Hauts de Seine) France

Automobiles Peugeot

75 avenue de la Grande Army

Paris - France

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Tap for the heating circuit of one

Vehicle

The present invention relates to a tap for a heating circuit, especially for the heating circuit of a motor vehicle.

Experience has shown that in the heating circuits of Motor vehicles provided taps after a long period of inactivity blocked or difficult to operate when closed.

This disadvantage has two main causes: the first is the internal dissolution of the rubber pipes in the presence of Antifreeze, which forms a kind of very fine sludge that sits between the valve body and its gate valve When it cools down, this mud solidifies and makes every movement difficult or forbidden altogether. the The second cause arises from the design of the respective Hahnes, in which it fitted almost exactly into its hole Sole boar eats or gets stuck.

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The arrangement according to the invention is characterized by a shut-off part or by a slide which, on resilient Base mounted, suitable to slide over the solidified coating in the tap hole. This will through some actuations the tap enables this solidified coating to be detached and this coating is released into the heating circuit.

Further details of the invention emerge from the following description of a non-limiting description of the invention Execution example on the basis of the accompanying drawing, in the:

Fig. 1 is a plan view of the tap,

FIG. 2 shows a front view along the arrow II in FIG. 1 and

Fig. J> a section on an enlarged scale along the Line III-III in Fig. 2 through the shut-off segment of the circuit and its spring

shows.

This cock has a housing 1 with inlet and outlet nozzles 2 and 3 and a bore concentric to the axis of rotation 5 4 on. The axis 5 is with a driver finger 6 for a Provided segment 7 to shut off the circuit. The segment 7 is by a compression spring 8, which is arranged between the segment 7 and the axis 5, against the bore 4 of the housing held. Two end stops for the run of the segment 7 are shown schematically in positions 9 and 10.

A channel 11 is embedded in the bore 4 on a small part of its circumference, advantageously to the right of the nozzle opening ~ 5 " and extends from point X on the bore 4 to the theoretical end point Y of the bore 4. This channel 11, the

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19047U

is swept over by segment 7, advantageously has trapezoidal cross-section, the cross-section of the channel 11 from point X to the intersection of the channel with the opening in the outlet connection 3 increases starting from the value zero.

The segment 7 has acute angles 7 »at its ends Form scraping edges.

The axle 5 is actuated by an external lever 16.

The tap housing 1 is closed by a plug 12, which is forcibly driven into the bore 4 and with the housing 1 can be riveted or clamped. In the example shown, the plug 12 is screwed in and has a Recess 13 of trapezoidal cross-section into which to seal a ring seal 14 is embedded opposite the axis 5. Two holes 15 are used to engage a claw wrench to tighten.

The segment 7 has acute angles. The tap works as follows:

When opening the slide or the segment 7 through the lever 16 in the direction of arrow F, segment 7 is eUipeh against j the stop 10 is moved and the full opening is thus established; the gutter 11 afer gutter of progression (gorge de progressivite) allows at the beginning of the opening process,

easier to master an e-dosing of the circulatory system /. the Trapezoidal shape of this channel is chosen for the purpose of easy removal of the sludge deposits.

In the event that the deposits have formed in the bore 4, the acute angles 7 formed at each end of the segment 7 serve as scraping edges in order to detach the deposits. In the opposite case, the segment 7 sweeps over these deposits while the spring 8 is depressed

909886 / 092Λ " ⁴ "

and releases it when moving backwards against the stop 9 and clears them against the exit 3

909886/0924

Claims (2)

Claims 1 · Tap for the heating circuit of a vehicle, in particular a motor vehicle, characterized in that the Rotary valve in the valve body (1) as a segment of a circle or a segment of a circle (7) is formed, this slide is resilient on the central adjusting axis (5) in front of the outlet connection (3) of the housing is arranged and two stops (9, 10) are provided in the bore (4) in which the slide (7) slides, which limit the sliding movement of the slide between a closed and an open position. 2. Tap according to claim 1, characterized in that the bore (4) in the housing (1) between two with respect to the outlet nozzle (3) has a channel (11), suitably selected points, with a trapezoidal cross-section, which is swept over by the slide (7). JJ. Tap according to claim 1 or 2, characterized in that the slide (7) which forms a segment of a circle has small acute angles ( 7/7) at its ends which form scraping edges. 909886/0924 Blank page