FR2495271A1 - MANUAL CONTROL DEVICE FOR CENTRAL HEATING FAUCET - Google Patents

Abstract

This device comprises a sleeve 28, integral with the body of the valve, carrying two ramps 37 of generally helical shape cooperating with two lugs 32a and 32b of a handwheel 27, a pusher 30, integral with the handwheel 27, and a spring 29 placed between the upper internal part of the sleeve 28 and a central cup 48 of the pusher 30. This device is interchangeable with a thermostatic control device. (CF DRAWING IN BOPI)

Description

The present invention relates to a manual control device

  for a central heating valve of the type comprising a body in the general shape of a tee for three

  tubing, one forming a seat of the tap, the other

  both a shutter intended to be applied on the seat and its control device, the last one being used

outlet tubing.

  In known hand-operated central heating valves, the adjustment shutter moves by

  to its seat by the maneuvering of a steering wheel

  Mande acting on a screw-nut system. Such faucets

  can not be equipped with thermal control devices

  because they require that one of the movements

  opening or closing, shutters shall be

  made by an elastic member attached to the order, by

  example a return spring. This is why in the

  known shutter bins, when not subject to the action of the control device, is recalled in the open position by a spring

  on the one hand, against the background of a cou-

  shovel integral with the body, on the other hand, on a shoulder

shutter.

  The object of the present invention is to provide a

  positive manual control for heating valve

  central unit which can be easily replaced without

  tap, by means of a thermostatically controlled device

  tick. For this purpose, the present invention relates to a manual control device for a central heating valve of the type described above and provided with an elastic member for returning the shutter in the open position, this device being characterized in that has a socket integral with the body carrying at least one ramp

  generally helical shape cooperating with at least one er-

  got a steering wheel, a control pushbutton

  shutter secured to the steering wheel and an or-

  elastic shaft placed between the sleeve and the pusher.

  Other features and advantages of the invention

  will appear b reading the description below,

  given as a non-limitative example, using ref4-

  reference to the figures in which - FIG. 1 is a later view e; n -. you have a central heating tap equipped with the anue! according to the invention; FIG. 2 is a view of FIG. 1 but in aquelle the faucet and his diszocsitif command macnuelle

  are shown in axial section according to a diametric plan.

tral and in closed position;

  FIG. 3 is a view similar to FIG. 2 mcis in po-

  open session; FIG. 4 is a view in developed projection of a helicoldole ruptured household on the sleeve of the device of

  manual control according to the invention.

  The valve is shown in FIGS. 1 to 3 and intended for an instl.l3atin central heating consisted of a fitting by forming the body 1 of the tap, surmont%

  a manual control device 2 equipped with a tubular

  lure input 3 and an outlet pipe 4 for the heat transfer fluid, the fluid entering the body 1 along the arrow f and out according to the arrow g. Command 2 is mounted on the end of the third

  tubing 5 of the body 1 by means of a screwed ring 6

  both external splines. Tubing 3 and 5 as well as the entire manual control device

2 have a common X-X axis.

  The upper pipe 5 carries a 7 th

  with a thread 8 of a piece of revolution or cut

  shovel 9 X-X axis having at its upper part a threaded flange 10 for fastening by screwing,

  by means of the threaded assembly ring 6, the arrangement

  manual control device 2 to the body 1 of the valve.

  The cup 9 is traversed from one side, along its axis, by a bore 11 tapped at its upper part.

  and provided with a shoulder 12 at its lower part.

  The inner cavity 13, defined between the three tu-

  3, 4 and 5 of the body 1 of the tap,

  on the side communicating with the inlet pipe 3 an annular collar 14 defining a seat for the valve valve.

  The shutter 15 of the faucet is composed in its part in-

  a valve proper 16 extending upwards by a tail 17 whose upper part

  carries a peripheral shoulder 18 whose underside

  rieure constitutes a first bearing surface for an elastic return member constituted by a coil spring 19. The second support of the spring 19 is constituted by the bottom of the shoulder 12 of the cup 9. The valve 16 carries a layer of overmolded elastomer 20. In the tail 17 of the valve 16 is formed a blind axial hole

  21 in which is depressed a valve stem 22 carrying

as a stop ring 23.

  A gland 24, terminated at the top

  by a hexagonal nut 24a, is fixed in the

  wise 11 of the cup 9 by tapping its upper part. It is crossed right through by a hole

  axial end opening at its upper part in a

  at its lower part in a cylindrical cavity

  drique 26 jacketed by a cup 26a serving now

  nest a seal 26b in its housing.

  The valve stem 22 is slidably and sealingly mounted

  in the axial hole 25 and protrudes from the bowl. The or-

  The stopper 23 mounted on the valve stem 22 prevents it from being ejected upwards by the action of the valve.

  static pressure of the fluid passing through the valve.

  The manual control device 2 is composed

  of an operating wheel 27, a sleeve 28, to the inte-

  of which is disposed a helical spring 29 calibrated whose effort is greater than that of the

  return spring 19 and a pusher 30.

  This steering wheel 27 internally comprises a cylindrical bearing surface 31 and is provided at its upper part with two diametrically opposite lugs 32a and 32b and with a cylindrical hub 33. At its lower end and towards

  inside are provided six snap hooks 34.

  On the outer periphery of the base of the handwheel 27 is engraved a graduated scale 27a covering a circular sector of 150 'angle at the center carrying at one of its ends the letter F (for closed) and at

  the other end the letter O (for open).

  This bush 28, of generally cylindrical shape,

  door at its upper part a bore 35 of axis X-X and

  an outer cylindrical bearing surface 36 cooperating respectively

  with the hub 33 and the cylindrical seat 31 of the

  In the cylindrical center 36, towards the top of the bush 28, there are provided two generally helicoidal ramps 37 symmetrical with respect to the X-X axis, the developed profile of which is shown in FIG. 4, consists of

  three horizontal parts 38, 39, 40 connected by

  inclined edges 41, 42, 43, 44. The base of the sleeve 28

  has on its outer surface a shoulder 45

  setting the freely rotatable mounting by snapping

  the assembly ring 6 and a polyfoil inner surface

  at eighteen sections, 46 moldings intended to

  puncture with the hex nut 24a of the cable gland 24.

  Finally, four slots 47 extending from the base to the

  lower calf of the cylindrical bearing surface 36 are formed in four vertical generatrices offset by 90 between them in the side wall of the sleeve 28 to give it the flexibility necessary for its snapping

on the mounting ring 6.

  The pusher 30 is constituted by a central bowl 48, intended to receive the helical spring 29 calibrated,

  connected to an outer flange 50 by four arms 51 ra-

  Orthogonal diels of width very slightly less than that of the slots 47 where they are guided. One of the arms 51 is provided with a locating index 52 extending vertically above the lower base of the operating wheel 27. The outer flange 50 carries a shoulder 53 intended to be engaged with the hooks of FIG. The pusher 30 acts on the valve stem 22 via the lower face 54 of its central bowl. The assembly of the various components of the control device is as follows: The sleeve 30 is placed in the control wheel 27 so that the lugs 32a and 32b are opposite the horizontal portions 38 of the ramps 37 and that the registration index 52 is close to a

  adjacent division of the letter F of the graduated scale 27a.

  The calibrated helical spring 29 is introduced into the sleeve 28, then the pusher 30 is engaged on the sleeve 28, its arms 51 cooperating with the slots 47 thereof and pressed against the spring 2? until it is latched by means of the shoulder 53 of the outer flange 50 in engagement with the six hooks 34 of the steering wheel 27. The assembly ring 6

  is finally freely rotatable on the lower end

  the sleeve 28 and retained thereon by the shoulder 45. The assembly thus formed is ready to

  be mounted on the valve body 1.

  The mounting of the manual control device 2 on

  the valve body 1 is then carried out.

  The assembly constituted by the manual control device 2 is brought into contact by the lower face 54 of the pusher 30 with the valve stem 22 which is then pushed against the return spring 19. The ring

  6 assembly is then engaged on the flange 10 fi-

  left the part of revolution 9 and screwed fully on it, stopping the rotation of the assembly being provided by the polygonal surface eighteen sections 46 of the sleeve 28 engaged on the hexagonal nut 24a of the press

towing 24.

  The operation of this faucet is as follows.

  It is assumed that the operating wheel 27 is in its rest position: the letter F of the graduated scale 27a is opposite the marking index 52 carried on the pusher 30. In this posiicn, the stubs 320 st 32b The steering wheel 27 operates from the lower horizontal zones 33 of the ramps 37, which are separated by a small distortion j or a gap. The valve is then closed (shown in Fig. 2- under load

  well determined, equal to that developed by the Res-

  0 spell 29, tras.zmise by the pusher 30 and the intermediate

  from the valve stem 22 to the shutter 15. In this

  the steering wheel 27 does not have any

  Axial I am part of the spring 29.

  When the steering wheel 27 is given a movement

  In this embodiment, the pins 320 and 22b, after catching the game j, come into contact with the inclined portions 42 of the rims 37 of the sleeve 28, which has the effect of transmitting a translational movement.

  ci2al towards the hiut of the steering wheel 27 and the push

  At night 30 which is associated with it snap, release the valve stem 22, thereby allowing the shutter 15 to separate from its seat] M under the action of the spring 19 and open the valve. When the lugs 32a and 32b have come into contact with the upper horizontal portions 39 of the ramoes 37, the valve is in the full position

  opening (configuration shown in Fig. 3). A rock

  the upper handwheel 27 reduces the

  numerically the valve in the rest position,

  because the pins 32a and 32b protrude from the horizontal portions 40 and are then in front of the parts

  horizontal 38 lower ramps 37.

  It will now be described how the nominal lifting of the valve necessary for setting is carried out

  of the central heating system. The steering wheel

  Work 27 being in its rest position, its rotation in the direction of F towards O contacts the lugs 32a and 32b with the ramps 37. This contact point corresponds to the zero position of the opening start. It is therefore sufficient to take the line of the graduated scale 27a which is opposite the indexing index 52 to have the opening origin. The spacing between each stroke of the graduated scale 27a corresponding to a determined lift of the ob- jector 15 makes it easy to obtain precisely

  the nominal lift to be made by turning the steering wheel

work 27.

  The invention has a number of advantages, in particular: - the manual control can be easily replaced by a thermostatic control without change of

  faucet or the balancing of the heating system

central fage;

  - it is easy to put the valve at the nominal lift

  thanks to the graduated scale of the steering wheel

  and allows you to easily adjust the heating system

  central fage; - at closing, the pressing force of the valve on its

  the seat is exercised by a tarnished

  user, which ensures the longevity of the elastomer seal 20 of the valve; when the valve is in the fully open position, an additional rotation of the steering wheel automatically returns it to the rest position (closing),

  without it being possible to force the mechanism.

  A variant of the invention is to replace the two generally helical ramps 37 of the sleeve 28 by a single ramp, the steering wheel does not

  comprising only one lug cooperating with this ramp.

Claims (9)

- CLAIMS -   1.- Manual control device for a central heating valve of the type comprising a body generally of three-pipe tee shape, one forming a seat of the   valve, the other bearing a shutter intended to   on the seat and its control device, the latter acting as an outlet pipe, and an elastic member for returning the shutter in the open position   characterized in that it comprises a sleeve (28)   daire body (1) of the valve, carrying at least one generally helical ramp (37) cooperating with at least one lug (32a-32b) of an operating wheel (27),   a pusher (30) controlling a shutter (15),   maneuver sight (27) and an elastic member   (29) placed between the bushing (28) and the pusher (30).   2.- Manual control device according to the   The invention is characterized in that the sleeve (28) is   killed inside the operating wheel (27) having a cylindrical bearing surface (31) for guiding in rotation on this socket.   3.- Manual rooming device living room one of the   claims 1 and 2 characterized in that the pusher   (30) has a central bowl (48) whose inner face   bottom (54) provides control of the shutter (15).   4.- Manual control device according to one   any of claims 1 to 3 characterized in that   the pusher (30) is secured to the maneuvering will (27) by a flange (50) connected to a central bowl (48) for controlling the shutter (15) by radial arms   (51) passing through the sleeve (28) by slots (47).   5.- Manual control device according to the claim   4 characterized in that one of the radial arms (51) carries a registration mark (52).   6.- Manual control device according to one   any of claims 1 to 5 characterized in that   the elastic member (29) is a compressed spring between the   inner upper part of the sleeve (28) and one   central vortex (48) of the pusher (30).   7.- Manual control device according to any one   conque of claims 1 to 6 characterized in that the   socket (28) is fixed on the body (1) of the tap by a screwed ring (6).   8.- Manual control device according to any one   conque of claims 1 to 7 characterized in that the   helical ramp (37) has a profile with parts   horizontal sections (38-39-40) connected by inclined born (41-42-43-44).   9.- Manual control device according to any one   conque of claims 1 to 8 characterized in that the   socket (28) comprises two symmetrical ruptures (27) relative to the X-X axis of the ladle.