DE1950453U - AIR CONDUCTING DEVICE FOR TEMPERATURE-DEPENDING FRICTION CLUTCHES. - Google Patents

Description

' "FICHTEL & SACHS AG., Schweinfurt / Main Patent and utility model auxiliary registration

Air guiding device for temperature-dependent friction clutches »

The invention relates to an air guiding device for temperature-dependent friction clutches, in particular for driving the fan of water-cooled internal combustion engines, the clutch being arranged directly behind a heat exchanger and the switching element of the clutch being acted upon by the air flowing through the heat exchanger ». ■. ' - -..-. ^: ■ ;. ■ .-. '■ -: :: /> ■■■ ■■ -. - ':' ■ ·: ■ · "..

In water-cooled internal combustion engines, temperature-dependent friction clutches are known, which are arranged after the cooler and are switched on and off by a switching element located in the air flow. Disadvantage of these known temperature-dependent switching clutches is that the air acting on the switching element at the same cooling water temperature does not assume the same temperature in every driving condition «This is due to the decreasing temperature with increasing driving speed Heat transfer due to the * Between the water cooler and the coupling there are also cross flows, because the Air evacuation due to the engine block behind the fan, especially in the middle of the coupling, is very bad. The consequence of this is that the switching element

is unevenly and badly applied, whereby a direct dependence of the switch temperature on the cooler temperature is not guaranteed "

The object of the invention is for temperature-dependent switching clutches to create a device that avoids the disadvantages mentioned. The solution to this problem takes place according to the invention in that at least one air guiding body is arranged in the area of the air flowing towards the switching element of the clutch, which air is stronger and faster heating, so that the safety element responds earlier and the cooling water temperature is immediate causes switching to take place,

According to a feature of the invention, there is a good heat transfer, if the air guiding body is a flat plate or a dish-shaped plate arranged in front of the heat exchanger Body is. The arrangement of such an air guide body causes a turbulent air flow through the cooler, whereby the heat exchange between cooler and air is essential “The shifting element of the clutch is also more intense when such an air guiding body is arranged warmer air is applied and there is a stronger heating of the switching element compared to the known constructions and thus an earlier response of the clutch. An intensive application of the peeling element by the Air flowing through the water cooler is according to the invention achieved in that the air guide body is arranged between the heat exchanger and the clutch and the switching element partially surrounds so that passage openings are created at both ends *

*dependent on ; -3-

Is; the air guide body has IMD fixedly connected to der.Kupplung also where the coupling end facing Durohlaßöff mangen, then this is in particular for internal combustion engines .p which are resiliently mounted separately from the radiator _s and ISTJ rigidly connected to the vehicle of the condenser, a substantial advantage , there. a hitting of the Sahalt element on the air guiding body is definitely avoided »

A particularly simple and easy-to-manufacture air guide body results if this is cylindrical is designed «To ensure a better approach of the air to the switching element, and a good heat exchange To get between the warm air and the switching element, it is particularly expedient to use the air guiding body to be funnel-shaped »This cylinder-shaped and funnel-shaped air guiding body is the influence of the cross flow is eliminated and the switching element intensifies with that flowing through the heat exchanger Air applied, According to a further feature of the According to the invention, a blading is arranged on the inner surface of the air guiding body, which is firmly connected to the coupling. This air guiding body has an effect öruiid of that like a fan and performs accordingly more Air past the switching element ^ causing this something is heated up faster and thus the clutch is engaged a little earlier.

! Because the OQuftführungsk £> rp © r "ein® has relatively large Mass® is due to the WäVme ^ this body trahliimg a slightly longer ^r l uf times." Clutch in the on

Further training options and advantageous effects result from the description of the structure and the Mode of operation of the embodiments shown below the invention.

Fig. 1 shows a flat plate arranged in front of the heat exchanger. -. "·, - '

Fig. 2a is a shell with a spherical surface.

Fig »2b is a conical body»

Fig. 5 shows a cylinder attached to the heat exchanger 8-arm ^ 3 ^ ft | ührungskö'r | i @> and

4 shows a funnel-shaped, likewise attached to the heat exchanger XiUftf0hr'ungskiJr per.

Fig. 5 shows a cylinder-shaped one attached to the coupling Air guide body «

Fig. 6 shows a fan-shaped air guide body attached to the coupling _e; -

Fig. 7 shows a blade attached to the coupling provided air ducts.

Fig. 8 also shows one attached to the coupling Air traffic control body, whose hatred proportionately big is »

■ ■ - κ. -

FIG. 1 shows the temperature-dependent switching clutch 1 with the holding element 2. » which behind the heat exchanger 3 is arranged «33 air guiding body designed as a plate 5 is by means of the spacer plate ^ 4 on the heat exchanger 3 attached Aa point of the as "-plane plate formed air guiding body 5 can also be shell-shaped Body to be arranged. Flg. Ha shows a scoal-shaped Body 6-, which has an approximately spherical surface has, as shown in FIG. 1, a conical body 7 indicates * . .

The LuftleitungskSrper 8 shown in Fig. 3 is cylindrical formed and fastened to the exchanger 3 between the runner body 8 and the adjusting nut of the Sehaltelementes is a circular Durohlaßloch 9 in front of

handem "Likewise in Pig" 4 is the triohter-shaped one Air guide body 10 connected to the heat exchanger 3 and has an annular inlet opening 11 between the mouth of the funnel and the switching element 2 «

Ber in Fig. 5 connected to the clutch 1 zylinderförmlge air guide body 12 has DurchlaßSffnujigen 13 in the radial direction * The funnel-shaped Iiuftführungskörper lh is also mounted on the coupling 1 and has Durehlaßöffnungen 15 to <,

The thermal coupling 1 on the attached Luftfiährungskörper 16 of Figure "J has a Besehaufelmng IT, and has DurchlaBöffnungen 18 in the radial Hichtung" in Fig. 8, the switching element 2 is s © of the funnel-shaped

body X 9 surround » that there is only a narrow annular gap 20 in between ο This air guide body I9 has radial Durohtrittsöffmmgen 21 and serves as a lock nut for the adjusting screw of the Scha. It element es 2 «

The mode of operation of the air guiding body according to the invention is described below.

The air guiding bodies 5> shown in Pig, 1, 2a and 2b 6 and 7 are arranged in front of the heat exchanger that the inflowing air on the back of this air guiding body executes a turbulent flow and thus a substantial Better heat transfer from the heat exchanger to the air is achieved «That is immediately behind the heat exchanger arranged switching element 2 of the temperature-dependent switching friction clutch 1 is acted upon by this warm air «, This switching element 2 expands when it is heated and engages the clutch when it is heated to a certain extent when the switching element 2 is arranged directly behind the heat exchanger 3, such an arrangement provides a guarantee for a perfect shifting of the clutch »

The one in the characters? and 4 air guiding bodies 8 and Io attached to the heat exchanger j5 guide the air flowing through the heat exchanger 3 to the switching element 2 of the clutch , whereby new air flowing through the heat exchanger is constantly brought to the switching element 2 * It therefore finds a very good one

Acting on the content element S rait the tureh the heat exchanger flowing air and it therefore takes place good engagement and disengagement of the clutch as a function of the cooling water empera'tür ",

Particularly for internal combustion engines, the engine is resiliently suspended and separated from the radiator, the air guide body 12 umd 1Λ are NaOH Figures 3 WTAE β fixedly connected to the clutch. The mode of operation of these air guiding bodies is the same as in FIGS. 3 and 4. In order to guide a particularly large amount of air past the switching element 2, the air guiding body 16 is provided with blades 17, as shown in FIG 5 flowing air does not flow off to the side but is guided through the air duct.

In the air guide body 19 shown in FIG relatively large mass of this part ^. -that this too acted upon by the air flowing through the heat exchanger and is accordingly heated up * Htiokt now the clutch engages at a certain air temperature, so causes this heated mass as a result of heat dissipation by radiation to the switching element 2 a slightly longer term of the Clutch in engaged lustamd *

The invention is not limited to the illustrated embodiments, but can be within the scope of the inventive concept be largely modified «instead of the one shown in the figures Thermostip as ..SchaJ.telement can easily

for example, to switch the element to a different temperature and temperature, how to use it? d. © m WärmeamstausekÄr angf arranged Luftleitiangskarper kaan ebemso gmt as a ball oäer kugelähßliolaer body w © rdeB <, next 1st a / aeli © iaae KO8ibiwa, ti # n eimes in front of the Wärmeamstausölier ^ uftfu which between the
WMrmeaiastauseher uiid the Kmpplimg arranged or on the
Clutch is attached *

Claims (1)

...!. «18 * 517 .-- _4Λ AU ₁ / ft pat a nspr tlehe t Air guiding device for temperature-dependent travel bUügskupplMtigen ^ * the clutch immediately hiater a heat exchanger is particularly for driving de "fan" of water-cooled engine i'fcngeordiwt and switching element & w luppluug "Jwreii dl" äm ^s eti AEEN wSrmtetrSnende air toeaufedhlagt wirä _# aadtiroh g * - kenrizelehnet, <| @J at least one air ducting body in the Be-Bioh which the solte3, «mftat (S) of the coupling a ^ l) is arranged against the exhausting air, welohor a more efficient and related / air heater * so that there is an additional element as an element and a similar element Among other things, the AlAiSngiekeit ier Kühluaseertenveratur causes sehung taking place * 2 * Air guiding device according to Ax »ixruoh l» daduroh that the l ^ tflhnrnrngek ^ pei ¹ «i» <s vöf the MMrmtausauseher D) amgeordaete flat plate (^) is * 3, liUffeleiteiiÄ-iohtuttg naeh. Anepsraah'l _# daduroh gekennsseiolintt that the air guiding body is a body (6 # T) arranged in front of the heat exchanger 0} and arranged like a neck » 4, XAiftleitelroiehtung according Ansprwoii 1 # daduroh gekennaeiehnet that the Luftftöiruifigsicörpsr sswieehen the heat exchanger (3) Tuad the clutch (I) and the switching element (S) is partially so surrounded. "Arise dai at both Baden DurohlaJ3u0fnungen (9, 11)" Air leiteinriohtung m®h Ansprueh ϊ * daduroh gekemizeiohnet, ctaJ the Luftfuhrungekurper (* 15 15) firmly üev! "Pplting (1) connected 1st wu mush on the <ler clutch"! Introverted end Dureh ·. β »air control device m & h hn®pvmh 1 * 4 vmä 5 # because g # ~ germs are worthwhile that over l ^ tfUbrtingekSrpor (8, 13} is formed«. 7 »Air guiding device according to claims I ₉ % vmä 5 # da.duroii gekennzeiohiieli that the air guiding body is tapered (10, 14) * 8 «iMftleitelnriohtuag müh Aneprueh 1 wtä 5 # daduroh kenn i» that on the Inner Maate Iflieh «des a heap (17) is arranged 9 * Luftleltelnvlohtung according to requirements 1 and 5 $ dtduroh marked that the air guiding body (19) has a large wall thickness * 10 · T