EP0442777A1 - Durchflussregler mit einer durch Druckdifferenz betätigten Membran für ein Heisswasser-Gerät - Google Patents

Durchflussregler mit einer durch Druckdifferenz betätigten Membran für ein Heisswasser-Gerät Download PDF

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Publication number
EP0442777A1
EP0442777A1 EP91400262A EP91400262A EP0442777A1 EP 0442777 A1 EP0442777 A1 EP 0442777A1 EP 91400262 A EP91400262 A EP 91400262A EP 91400262 A EP91400262 A EP 91400262A EP 0442777 A1 EP0442777 A1 EP 0442777A1
Authority
EP
European Patent Office
Prior art keywords
piston
membrane
rocker
water
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91400262A
Other languages
English (en)
French (fr)
Other versions
EP0442777B1 (de
Inventor
André De Lannoy
Jean-Luc Veislinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saunier Duval Eau Chaude Chauffage SDECC SA
Original Assignee
Saunier Duval Eau Chaude Chauffage SDECC SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saunier Duval Eau Chaude Chauffage SDECC SA filed Critical Saunier Duval Eau Chaude Chauffage SDECC SA
Publication of EP0442777A1 publication Critical patent/EP0442777A1/de
Application granted granted Critical
Publication of EP0442777B1 publication Critical patent/EP0442777B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
    • F23N1/087—Regulating fuel supply conjointly with another medium, e.g. boiler water using mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/20—Membrane valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/24—Valve details

Definitions

  • the invention relates to the technical field of gas appliances for producing hot water and relates more particularly to an adjustable limiter of the water flow intended for a control mechanism with a differential membrane.
  • the device regulating or limiting water flow usually mounted on this type of device has a membrane moving under the effect of a pressure difference created by the passage of water in a device of the venturi type, as well as 'A shutter member whose movable member is integral with the movements of said membrane.
  • hydraulically balanced shutter devices are known in the form of a movable piston whose head forms a shutter valve and whose cylindrical outer skirt slides with play inside a fixed cylindrical fur; the head of this piston is pierced with an orifice which makes it possible to achieve the pressure balance between the top and the bottom.
  • the mechanical connection between the piston and the membrane is ensured by a spacer or a connecting bar.
  • a summer / winter controller corrects the variation due to the water temperature at the inlet of the appliance. But this action only corrects the proportional regulation zone and does not prevent the user from opening the draw-off valve large, which then gives insufficiently hot water.
  • a solution as described in FR-A 2 569 283 consists in ensuring that the movable piston and the spacer connecting with the membrane are adjustable in height relative to each other by ensuring that the piston cooperates with the spacer by means of a threaded connection and is maneuvered in rotation, from the outside, by a lever which is therefore located under the control mechanism, in line with the piston and the diaphragm.
  • the Applicant in order to bring this adjustment of the water flow rate to the front of the device, in a visible area that is easily accessible to the user, has therefore devised a new adjustable limiter which is easily integrated into the 'device without the need to modify the piston and the spacer usually used in known mechanisms, and which overcomes variations in network pressure.
  • an object of the present invention consists of a water flow limiter intended for a differential membrane control mechanism for a gas appliance for producing hot water comprising a shutter member capable of more or less closing the passage orifice. of water between the inlet pipe and the pressure chamber located under the membrane, which limiter consists of a profiled sleeve which can more or less block a water passage orifice from an inlet pipe to a pipe outlet, sleeve which is moved by the rotation of a coaxial piston operated by a button arranged in front of the device, and according to which the head of said piston comes to bear against a rocker which follows the movements of the membrane.
  • the rocker has two branches pivoting about a horizontal axis, a first branch being engaged under the membrane, a second branch being in abutment against the movable piston.
  • a sliding strip pivoting about a horizontal axis is interposed between the branch of the rocker and the head of the piston.
  • the mechanism housing consists of an upper shell 1 and a lower shell 2 between which is stretched a membrane 3, subjected to a differential pressure defining two water chambers 4 and 5.
  • a water outlet conduit 6 communicates with chamber 5 through an orifice 7.
  • This chamber 5 is itself open onto a water inlet chamber 8 through a communication orifice 9 at the base of the shell 2.
  • the membrane 3 provided with a part rigid central unit 23 is connected by a rod 10 to the valve 11 for admitting the gas to the burners, not shown.
  • the valve 11 is kept closed against its seat by the spring 12 and closes the gas inlet pipe 13.
  • a piston 14 used to modify the pressure drop is movable in a vertical well perpendicular to the orifice 7, and more or less closes this orifice; it is recalled by a spring 15 against a connecting spacer 16 by which the movement of the piston is secured to that of the membrane 3.
  • a positioning cartridge 17, located in the chamber 5 at the orifice 9 serves as a support to a rocker 18 with two branches 19 and 20 pivoting around a horizontal axis 21, as well as to a sliding strip 22 also pivoting around a horizontal axis 29 near the axis 21, interposed between the rocker and the stop.
  • a first branch 19 of the rocker 18 is engaged between the rigid central part of the membrane 3 and the piston 14, at the level of the spacer 16, and is in abutment against this part 23.
  • the other branch 20 is applied against the lower part of a face of the strip 22, the opposite face of which is itself in abutment against the head of a piston 24 constituting the shutter member of the water flow limiter which extends in a well 25 developing towards the front of the apparatus and overflows into bedroom 8.
  • the well 25 communicates with the chamber 8 through a more or less closable orifice 35 as will be seen below, and also communicates with a water inlet conduit 36.
  • the opposite end of this well is sealed by a plug 26, also crossed in leaktight fashion by the rod 27 of an external rotary knob 28.
  • the rod 27 carries two lateral flats 30 which are engaged in a central opening with flat edges 31 provided axially in the body of the piston 24. This the latter is provided externally with a thread 32 which cooperates with a guide sleeve 33 internally threaded, sliding inside the well 25, and biased by a spring 34 against the rocker 18.
  • the head of the sleeve projects into the orifice 35 separating chamber 8 from well 25.
  • the spring 34 tends to move the guide sleeve 33 away from the plug 26, in the direction of the orifice 35 which it partially closes.
  • the head of the adjustable piston 24, secured to the sleeve by its thread 32, is applied against the sliding strip 22 which itself exerts a certain pressure against the branch 20 of the rocker 18 which would tend to rotate around its axis 21, this movement being counteracted by the branch 19 bearing against the rigid part 23 of the membrane 3.
  • the end of the guide sleeve is profiled so as to limit the passage of water through the orifice 35, depending on its position by report to said orifice.
  • the figure shows the device at rest.
  • the sleeve is engaged in the orifice 35 and limits to the maximum the flow of water that can pass through the device during a drawing. If the button 28 is operated in the direction indicated by the arrow, the flats 30 will rotate the piston 24. Since the head of the latter is immobilized by the rocker, its rotation will be exerted, thanks to the thread 32 , on the sleeve 33 by imparting to it a movement of movement against the spring 34 in the direction of an opening of the orifice 35. The water passage section becomes more important, as well as the flow through the device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Control Of Fluid Pressure (AREA)
EP91400262A 1990-02-13 1991-02-05 Durchflussregler mit einer durch Druckdifferenz betätigten Membran für ein Heisswasser-Gerät Expired - Lifetime EP0442777B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9001659A FR2658263B1 (fr) 1990-02-13 1990-02-13 Limiteur de reglage de debit d'eau destine a un mecanisme de commande a membrane differentielle pour appareil a gaz de production d'eau chaude.
FR9001659 1990-02-13

Publications (2)

Publication Number Publication Date
EP0442777A1 true EP0442777A1 (de) 1991-08-21
EP0442777B1 EP0442777B1 (de) 1993-10-27

Family

ID=9393638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91400262A Expired - Lifetime EP0442777B1 (de) 1990-02-13 1991-02-05 Durchflussregler mit einer durch Druckdifferenz betätigten Membran für ein Heisswasser-Gerät

Country Status (4)

Country Link
EP (1) EP0442777B1 (de)
DE (1) DE69100544T2 (de)
ES (1) ES2044689T3 (de)
FR (1) FR2658263B1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE495177C (de) * 1930-04-03 Pintsch Julius Ag Gashochdruckregler
FR1514144A (fr) * 1966-10-17 1968-02-23 Saunier Duval Mécanisme gaz pour chauffe-eau ou chauffe-bains instantané à puissance utile variable
DE2531485B2 (de) * 1975-07-15 1977-05-05 Joh. Vaillant KG, 56 30 Remscheid Gasbeheizter wasserheizer
EP0172113A2 (de) * 1984-08-16 1986-02-19 Saunier Duval Eau Chaude Chauffage - Sdecc Wasser-Durchflussregler für einen Gas-Warmwasserbereiter, regelbar durch einen Steuermechanismus mit einer Differentialmembran

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE495177C (de) * 1930-04-03 Pintsch Julius Ag Gashochdruckregler
FR1514144A (fr) * 1966-10-17 1968-02-23 Saunier Duval Mécanisme gaz pour chauffe-eau ou chauffe-bains instantané à puissance utile variable
DE2531485B2 (de) * 1975-07-15 1977-05-05 Joh. Vaillant KG, 56 30 Remscheid Gasbeheizter wasserheizer
EP0172113A2 (de) * 1984-08-16 1986-02-19 Saunier Duval Eau Chaude Chauffage - Sdecc Wasser-Durchflussregler für einen Gas-Warmwasserbereiter, regelbar durch einen Steuermechanismus mit einer Differentialmembran

Also Published As

Publication number Publication date
FR2658263B1 (fr) 1992-05-29
DE69100544T2 (de) 1994-05-11
FR2658263A1 (fr) 1991-08-16
EP0442777B1 (de) 1993-10-27
DE69100544D1 (de) 1993-12-02
ES2044689T3 (es) 1994-01-01

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