EP0595945A1 - Section de chauffage a double paroi. - Google Patents

Section de chauffage a double paroi.

Info

Publication number
EP0595945A1
EP0595945A1 EP92916041A EP92916041A EP0595945A1 EP 0595945 A1 EP0595945 A1 EP 0595945A1 EP 92916041 A EP92916041 A EP 92916041A EP 92916041 A EP92916041 A EP 92916041A EP 0595945 A1 EP0595945 A1 EP 0595945A1
Authority
EP
European Patent Office
Prior art keywords
double
double jacket
shaft
heating shaft
heat exchanger
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
EP92916041A
Other languages
German (de)
English (en)
Other versions
EP0595945B1 (fr
Inventor
Manfred Bartelt
Klaus Geil
Peter Goebel
Dirk Haibach
Udo Halbach
Peter Luebke
Peter Menne
Norbert Morbach
Rainer Schild
Uwe Schuerbrock
Johann Wienen
Walter Wienen
Wilhelm Wingensiefen
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.)
Nv Vaillant Sa
VAILLANT B.V.
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Joh Vaillant GmbH and Co
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
Priority claimed from AT0146291A external-priority patent/AT396292B/de
Priority claimed from AT0206391A external-priority patent/AT396522B/de
Priority claimed from AT0095492A external-priority patent/AT396402B/de
Priority claimed from AT0095592A external-priority patent/AT396403B/de
Priority claimed from AT0095692A external-priority patent/AT397136B/de
Priority claimed from AT0095792A external-priority patent/AT397143B/de
Priority claimed from AT0098292A external-priority patent/AT398833B/de
Priority claimed from AT0130992A external-priority patent/AT399772B/de
Application filed by Joh Vaillant GmbH and Co filed Critical Joh Vaillant GmbH and Co
Publication of EP0595945A1 publication Critical patent/EP0595945A1/fr
Publication of EP0595945B1 publication Critical patent/EP0595945B1/fr
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/124—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using fluid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
    • F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/44—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with combinations of two or more of the types covered by groups F24H1/24 - F24H1/40
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/12—Arrangements for connecting heaters to circulation pipes
    • F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
    • F24H9/139—Continuous flow heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/14—Arrangements for connecting different sections, e.g. in water heaters 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/14—Arrangements for connecting different sections, e.g. in water heaters 
    • F24H9/146—Connecting elements of a heat exchanger

Definitions

  • the invention relates to a double-walled heating shaft with a heat exchanger for a burner-heated circulation or continuous-flow water heater with at least one lamella tube through which water flows and which is held in a heating shaft designed as a water-filled double jacket and accommodating the burner, the lamella tube with the double jacket being water-side is connected in series and is arranged in the region of the double jacket facing away from the burner.
  • the flow is connected in a corner area of the double jacket, with the finned tubes, at the second end of which the return pipe is connected, connected to the opposite corner area.
  • the aim of the invention is to avoid these disadvantages and to propose a heat exchanger of the type mentioned at the outset, in which a reliable flow is also ensured in the upper regions of the double jacket.
  • this is achieved in that the lamella tube is surrounded by attachments of the double jacket only on two mutually opposite sides, which are in the extension of the lamellae of the lamella tube, which attachments with another Connect the water pipe, with a flow or return connected to one of the attachments.
  • the attachments are separated from the rest of the double jacket by a constriction.
  • the flow or return is connected to one of the two attachments and the other attachment is connected to a branch of the finned tube.
  • a heat exchanger for a burner-heated circulating or continuous water heater with at least one water-lamellar tube, which is held in a heating shaft designed as a water-filled double jacket and accommodating the burner, the lamella tube being connected in series with the double jacket on the water side and arranged in the region of the double jacket facing away from the burner, and the double jacket with a flow of a heat consumer ver ⁇ connected, it is provided that the connection of the flow is arranged in the area of the double jacket facing the burner and is connected via a channel to the area of the double jacket facing away from the burner.
  • the channel is formed by a bulge.
  • the channel preferably being arranged on the outside of the double jacket.
  • the channel is also connected in its lowest region to the interior of the double jacket via an overflow opening.
  • the invention further relates to a double-walled heating shaft with an inlet connection and an outlet connection, a lamella heat exchanger being held in the heating shaft and connected to the interior thereof.
  • At least one ventilation tube is provided in the uppermost region of the interior of the heating duct, which is designed as a double jacket, and opens into the outlet connection essentially in the axial direction of the outlet connection.
  • the ventilation tube ends above the connection to the finned heat exchanger in the interior of the heating shaft and runs in the interior of the double jacket.
  • the invention further relates to a double-walled heating shaft which is circumferentially closed in plan view and is preferably substantially rectangular and is formed by inner and outer walls which are tightly connected to one another in the upper and lower regions and between which a cavity is present is that can be connected to lines via an inlet and an outlet connection.
  • the inner wall and the outer wall are each provided with beads, the bottoms of which abut one another, the inner and outer walls being additionally connected to one another in this area.
  • the outer and inner walls are not only connected to one another along the upper and lower regions, but also at a number of locations distributed over the outer and inner walls.
  • the beads run essentially parallel to the upper or lower edge of the double jacket.
  • the invention further relates to a double-walled heating shaft which has interconnected outer and inner walls, between which there is an intermediate space.
  • Such heating shafts are manufactured in different sizes depending on the required output.
  • it is necessary to connect correspondingly dimensioned inner and outer walls to one another along seams which extend in the circumferential direction.
  • the heating shaft In order to ensure an essentially uniform, low thermal load in such a heating shaft, provision is made for the heating shaft to have double-walled sections on all sides which are connected to one another and the walls of the heating shaft in the region of their lower edges and in the region of their upper edges facing the heat exchanger are sealed together.
  • the proposed heating shaft there is the advantage of a higher degree of efficiency, which is due to the larger heat transfer area. Furthermore, the proposed measures reduce the stationary energy loss and reduce the temperature of the device jacket, thereby reducing the radiation losses. In a heating shaft according to the invention, it is advantageous if the connection of the walls of the heating shaft are connected to one another by welds.
  • At least one of the walls in the region of the double-walled sections of the heating shaft is provided with beads which run in the direction of flow of the water.
  • the two walls of the double-walled sections of the heating shaft are connected to one another in the area of the beads, preferably by spot welding.
  • the invention relates to a connection, in particular a primary heat exchanger to a heating water circuit, wherein a receptacle for a connection piece held on a line is arranged on an essentially stationary part, in particular a primary heat exchanger.
  • connection piece In order to allow greater tolerances with regard to the position of the axes of the receptacle and the connection piece in such a connection, it is provided that the receptacle and the connection piece can be plugged into one another, with a sealing ring being held on a cylindrical wall of one of the two parts and that Connection piece and the receptacle for securing the mutual axial position are provided with radially projecting flanges.
  • the proposed measure has the advantage of, compared to a connection by means of a union nut, a reduced space requirement and a considerably simpler assembly.
  • the flanges are interrupted in the circumferential direction and releasably connected by means of a bayonet ring, which is preferably provided with a polygon which may be formed by an expression.
  • the connecting piece can be connected very easily to the receptacle, only the bayonet ring having to be rotated for this purpose.
  • the sheet metal piece is provided in the end piece, which overlaps the flanges of the receptacle and the connection piece with its legs, the sheet metal piece preferably having an undercut and being clampable on the connecting piece.
  • the U-shaped sheet metal piece is provided with a handle, preferably a bore.
  • the sheet metal piece can be removed very easily in order to be able to release the connection of the connecting piece to the receptacle.
  • the invention further relates to a gas water heater with a double jacket which forms a heating shaft and through which water flows and which has a substantially vertical axis, is acted upon by a gas burner arranged axially at the lower end and has a vent valve.
  • a vent valve is arranged near a circulation pump.
  • the double jacket in the upper region has at least one constriction extending over its circumference and the vent valve is arranged above the constriction (s).
  • the invention further relates to a double-walled heating shaft through which a medium to be heated can flow, the interior of the double jacket being connected to a heat exchanger.
  • heating shafts are made of sheet metal parts which are welded together. It is necessary for the various functional parts, such as water connections, sight glasses and the like, to be welded into corresponding openings.
  • the heat exchangers are integrated with the heating shafts.
  • the heating shaft is constructed from die-cast elements on which functional parts such as connections, sight glasses and the like are integrally formed.
  • FIGS. 1 and 2 show two different embodiments of a heat exchanger according to the invention
  • FIG. 8 shows a partially sectioned front view of a further heating shaft according to the invention
  • FIG. 9 shows a side view of the heating shaft according to FIG. 8,
  • FIG. 12 shows a further embodiment of a heating shaft according to the invention
  • FIG. 13 shows an axonometric representation of a heating shaft according to a further embodiment of the invention before it is assembled
  • FIGS. 14 to 16 schematically different combinations of two different types of parts for producing a heating shaft according to FIG. 13.
  • FIGS. 17 through 19 sections along lines XVII-XVII, XVIII-XVIII and XIX-XIX in FIG. 12,
  • FIGS. 21 to 28 different embodiments of connections according to the invention in view and section
  • FIG. 29 shows a cross section through a heating shaft according to the invention
  • FIG. 30 shows a side view of the double jacket according to FIG. 29,
  • FIG. 31 schematically, a further heating shaft according to the invention
  • FIG. 32 shows a partially sectioned side view of the heating shaft according to FIG. 31,
  • FIG. 33 shows a partially sectioned top view of the heating shaft according to FIG. 31,
  • FIG. 34 shows a partially sectioned front view of a further heating shaft according to the invention
  • FIG. 35 shows a partially sectioned rear view of the heating shaft according to FIG. 34
  • FIG. 36 shows a side view of the heating shaft according to FIG. 34
  • FIG. 37 shows a partially sectioned detailed view of the heating shaft according to FIG. 34
  • FIG. 38 shows a detail of the heating shaft according to FIG. 33
  • FIG. 39 shows a detail of the heating shaft with the heat exchanger according to FIG. 31,
  • FIGS. 31 and 32 show a section through a variant of the heating shaft according to FIGS. 31 and
  • FIG. 41 shows a variant of a detail of the heating shaft according to FIG. 33.
  • a double jacket 1 is provided with attachments 2 on two opposite sides, in the embodiment according to FIG. 1 the front attachment is connected to the double jacket 1 via a front constriction 3.
  • a finned tube 4 is arranged between the two attachments 2, the fins 5 of which are held between the attachments 2.
  • the water pipe 6 held in the fins 5 is laid in a serpentine line.
  • the one attachment 2 is connected via a pipe 7 to the water pipe 6 of the finned pipe 4.
  • the two attachments 2 are connected in series with one another via a pipeline 8, on the attachment 2 that is not connected to the water pipe 6 of the finned pipe 4 via the pipe 7, the flow line 9 is connected, specifically at the end of the attachment 2 through which the flow lasted in the direction of flow.
  • the heating water first flows through the lamella tube 4, a part of the water flow entering the one attachment 2 of the double jacket 1 and flowing through it. This partial flow enters the second attachment 2 via the pipe 8.
  • the main flow enters the lower part of the double jacket 1 in its corner region via a bend 10 connected to the lamella tube 4. There the water flow divides and flows over a wide and long side of the double jacket to the connection of the flow 9.
  • the water to be heated flows at the connection 11 of the water pipe 6, which is connected to the return line, into the lamella pipe 4 and emerges at the flow connection 9 after flowing through the lamella pipe 4 and the double jacket 1 together with attachments 2 .
  • the constriction 3 is only at the front, so that the water can get from the lower part of the double jacket 1 to the connection of the flow 9 arranged in its attachment 2.
  • the constriction 3 is missing between the double jacket 1 and the attachments 2, which are likewise connected to one another via a tube 8. Furthermore, the connection of the water pipe 6 of the finned pipe 5 to one of the attachments 2 is also missing.
  • the water after flowing through the finned tube 6 via the elbow 10 into the double jacket 1 in one corner area. From there, the water flow divides, so that the two longitudinal sides of the double jacket 1 are flowed through in parallel in the same direction. This also results in a flow through the attachments 2 of the double jacket 1, as shown by the arrows. Any existing air bubbles are thereby carried away and carried out.
  • the attachments 2 are connected to the water tube 6 of the finned tube 4 via the double jacket 1.
  • the water flow is divided into a partial stream flowing through the actual double jacket 1 and a partial stream flowing through the attachment 2 thereof, the partial stream flowing through the attachment 2 not connected to the flow line 9 via the Tube 8 is fed to the connection of the flow 9.
  • the attachment 2 is separated from the double jacket 1 via a constriction 3 which extends over most of the length of the attachment 2.
  • a channel 16 is formed on one end of the attachment 2, which extends downward to a connection 14 to which, for example, the flow of a heating circuit or other heat consumer can be connected.
  • the constriction is very deep, so that only a small clear cross section remains, which is sufficient, however, to allow any gas bubbles escaping from the heating water to pass through, but not to allow any appreciable water exchange enable. It is therefore possible to introduce water into the attachment 2 via a connection 12 in the latter and to force a flow which ensures that any gas bubbles that may accumulate are entrained.
  • the channel 16 is expediently formed by an outwardly projecting bulge 15 of the outer wall 18 of the double jacket 1 together with the attachment 2, wherein in the area of the channel 16 one essentially extends along the outer wall 18 of the lower area of the double jacket 1 extending cover 13 is arranged, which is connected at the top to the inner wall 19 of this area of the double jacket 1.
  • the two attachments 2 of the double jacket 1 are connected to one another via a tube 8.
  • the water is introduced into the lower region of the double jacket 1 via the pipe socket 20 and into the attachments 2 via the connection socket 12.
  • an overflow opening 17 is arranged in the lowermost region of the cover 13, which enables practically complete emptying of the double jacket 1, for example for dismantling from a heater, although the connection 14 is via the channel 16 is connected to the uppermost region of the double jacket or its attachment 2.
  • FIGS. 6 and 7 differs from that according to FIGS. 3 to 5 only in that the channel 161 connecting an attachment 2 to the connection 14 has a kink and extends to the narrow side of the lower part of the double jacket 1.
  • an overflow opening is arranged in the area of the connection 14 in the cover separating the channel 161 from the lower area of the double jacket 1.
  • a heating shaft 1 a serving as a combustion chamber according to FIGS. 8 to 11 is designed as a double jacket 1, as can be seen from FIG. 11.
  • the inner wall 19 is not shown in FIGS. 8, 9 and 10.
  • a space 21 through which a medium to be heated, for example water, can flow is provided between the outer wall 18 and the inner wall 19.
  • the outer wall 18 is connected in some areas to the inner wall 19, beads 22 being provided distributed over the surface of the outer and inner walls 18, 19, the bottoms of which lie against one another and allow additional connection points there, for example welding points. in order to increase the rigidity of the double jacket 1 and to avoid bulging it under pressure.
  • the double jacket 1 is provided with an inlet connection 11 and an outlet connection 14 for the medium to be heated.
  • a vent tube 24 ends, which is open in this area.
  • This ventilation tube 24 leads to the outlet connection 14 and opens into it, the ventilation tube 24 essentially ending in the direction of the axis and in the flow direction of the medium of the outlet connection 14, as a result of which a negative pressure is created in the region of the opening of the ventilation tube 24. This is due to the flow of the medium through the outlet connection 14.
  • This negative pressure acts via the ventilation tube 24 in the upper region of the heating shaft 1 a, where the ventilation tube 24 has its open circumference, as a result of which any air bubbles and pockets accumulating in this region are sucked off via the ventilation tube 24 and flowing through the outlet connection 14 Medium are removed.
  • a vent screw is provided in the uppermost region thereof for venting the double jacket 1 during the first filling, which is kept open during the filling and is closed tightly after the double jacket 1 has been completely filled.
  • This vent screw is located in the vent connection 23.
  • vent tubes 24 lead into the outlet connection 14, which lead to the uppermost regions of the two side walls 25, 26, between which the tubes of the finned heat exchanger, not shown, occupied by fins, the deflection chambers 27 of which are visible.
  • the heating shaft la is made of stainless steel sheet by a double jacket 1, which encloses an interior 28 provided with an atmospheric gas burner and which is formed by tightly connected outer walls 18 and inner walls 19. The tight connection of these two walls 18 and 19 takes place in the upper and lower region of the heating shaft 1 a by means of weld seams 29.
  • the space 21 extends, as can be seen from FIGS. 17 to 19, over all four walls of the heating shaft 1 a.
  • Beads 22 are incorporated in the inner and outer walls 19 and 18, the beads 22 arranged in the inner wall 19 and outer wall 18 being arranged essentially congruently. there are the floors 40 of the beads 22 of the inner wall 19 on the floors
  • the outer wall 18 of the side walls 25 and 26 is indented
  • a bulge 43 connects that area of the side wall 25, in which there is an intermediate space 21 between the outer wall 18 and the inner wall 19, to a pipe 31 of the heat exchanger 30, so that the water flows from the intermediate space 21 into the heat exchanger 30 can.
  • the inlet and outlet connections are arranged on the outside of the side wall 26.
  • the heating shaft 1 a consists of two essentially U-shaped parts 34, 35 welded together.
  • the heating duct la formed by a double jacket 1, in which finned heat exchangers 30 are held has an inner wall 19 and an outer wall 18, which are formed by seams running in the circumferential direction of the heating duct la 29 are connected.
  • An atmospheric gas burner is arranged in the interior 28, which is surrounded by the heating shaft 1 a and is covered by the finned heat exchanger 30 at the top. This heats the heating medium circulating in the space 21 between the inner wall 19 and the outer wall 18.
  • the intermediate space 21 is connected to the inner spaces of the tubes of the finned heat exchanger 30.
  • the heating duct la consists of two U-shaped parts 34, 35 which are connected to one another by the end faces 131 and 141 of their legs 36 and 37, respectively.
  • the parts 34 and 35 have webs 32, 33 of the same length.
  • two parts 34 whose legs 36 have the length A, are connected to form a heating shaft 1a.
  • a heating shaft made of two interconnected parts 34 can, for example, transfer a heat output of 20 kW from the burner to the heating medium circulating in it.
  • the heating shaft 1 a shown in FIG. 15 is made from two parts 34 and 35 connected to one another, the legs 36 and 37 of which have lengths A and B. Such a heating shaft can have an output of 25 kW, for example.
  • the heating shaft 1 a shown in FIG. 16 is made of two parts 35, the legs 37 of which have a length B. Such a heating shaft can have an output of 30 kW, for example.
  • FIG. 20 shows a section through a heating shaft 1 a, which represents a primary heat exchanger.
  • the interior 28 is heated by an atmospheric gas burner arranged there, the heating duct la being designed as a double jacket, in which the inner wall 19 is partially sectioned from the outer wall 18 in order to close an intermediate space 21 through which the medium to be heated can flow form.
  • the inner wall 19 of the heating shaft la is provided with a collar 39, into which tubes of a finned heat exchanger can be inserted.
  • the outer wall 18 is provided with a bore 44 into which a receptacle 45, which is designed as a socket, is inserted and connected to the edge of the bore 44 via a weld seam 46.
  • a connector 47 is inserted, which is connected to a line 48 which leads to the space 21.
  • This connecting piece 47 is integrally connected to a manifold 49 which is connected to the line 48 via a circumferential solder joint 50.
  • the connector 47 is provided with a flange 51, as is the receptacle 45, the flange 52 of which abuts the flange 51.
  • a sealing ring 54 is held on the outer wall 53 of the connecting piece 47 which projects beyond the flange 51 and ensures the sealing against the inner wall of the receptacle 45.
  • the two flanges 51 and 52 are overlapped by a U-shaped sheet-metal piece 55.
  • FIGS. 21 and 22 show a connection similar to that of FIG. 20.
  • the connection piece 47 is provided with a groove 56 in which the sealing ring 54 is held.
  • the U-shaped sheet-metal piece 55 has an undercut 57 on two legs 58, 59, by means of which it is possible for the sheet-metal piece 55 to encompass the tube 48 by more than 180 °, whereby the piece of sheet metal 55 is resiliently spread.
  • the piece of sheet metal 55 is provided with an extraction hole 60, into which a tool can be used to make it easier to remove the piece of sheet metal 55.
  • the tube 48 is connected to the connecting piece 47 via a solder 61.
  • FIGS. 25 and 26 differs from that according to FIGS. 21 and 22 by the design of the receptacle 45, which according to FIGS. 25 and 26 is formed as a sheet metal part, whereas according to FIGS. 21 and 22 a rotating part is preferred is seen.
  • the flange 52 is interrupted in the circumferential direction.
  • the two flanges 51, 52 are held together by means of a bayonet ring 61, which is provided with sheet metal tabs 63, 64, which engage under or over the sections of the flanges 51, 52.
  • the bayonet ring 62 is provided with a polygonal shape 65 protruding from its plane, which enables the bayonet ring 62 to be easily rotated by means of a spanner.
  • FIGS. 23 and 24 show the connection of the receptacle 45 to the connecting piece 47 by means of a bayonet fastening
  • FIGS. 27 and 28 demonstrate this fastening in the case of a pipe on the heating shaft 1 a.
  • FIG. 29 shows a heating shaft 1 a in which a gas burner 68 which is fed from a gas line 67 provided with a gas valve 66 is arranged, the heating shaft 1 a being operated by a double tel 1 is formed, which is filled with water. This has a constriction 3 in its upper region.
  • the gas burner 68 is assigned to the lower area 84 of the heating shaft 1 a, whereas the heat exchanger 30 is assigned to the upper area 83 facing away from the gas burner 68.
  • the arrangement of gas burner 68 and heat exchanger 30 is common to all embodiments.
  • the gas emerging from the water which is located in the clear space of the double jacket 1 collects in the upper region 83 of the double jacket 1.
  • a ventilation valve 72 designed as an automatic float valve is arranged, which is located with its connecting line 73 above the double jacket 1, wherein the gas accumulated in the area 71 can be discharged via the ventilation valve 72.
  • the constriction 3 is formed from squeezing points 74 arranged in a row, in which the two walls of the double jacket 1 practically abut one another, but free passages 75 are provided between these squeezing points 74.
  • the gas water heater according to FIGS. 29 and 30 can be used as a domestic water heater or as a heat source for a circulating heater.
  • the heating shaft shown in FIGS. 31 to 33 which regularly consists of a combination of a heating shaft la with a heat exchanger 30, is heated by a lintel burner 116, which, for example, has a natural gas / air mixture pointing downwards Flames burned.
  • the burner 116 is designed as a forced draft burner or, in the case of an atmospheric burner, has a flue gas extraction fan on the exhaust gas side (not shown).
  • the heating shaft la is designed as a double jacket and represents the combustion chamber of the burner 116, in which the flames appear and a considerable part of the radiant heat of the flames is transferred to the heating shaft la.
  • the inner walls and the outer walls of the double jacket are made of die-cast parts 110, 111, 111 '. These are tightly connected to one another by means of weld seams 112. Functional parts such as water connections 103, 103 'or sight glass holder 115 are integrally formed on these die-cast parts 110, 111, 111'. Likewise, a flue gas guide device 106 for guiding the fuel gases is integrally formed on the die-cast part 110.
  • the heating shaft 1 a is connected to the heat exchanger 30. This is connected via form-fitting connections 105 to the heating shaft 1 a, wherein liquid sealing compounds or interposed seals 119 can be provided for the required sealing.
  • the die-cast part 110 has vertically extending ribs 113 on the inside and the die-cast parts 111 and 111 'on the outside. These enable a pressure-resistant construction without having to make additional connections by welding between the inner and outer jacket and thereby reduce the pressure losses that occur for the liquid to be heated.
  • the ribs formed on the inside of the die-cast part 110 also contribute to improving the heat transfer from the fuel gases generated by the burner 116, the burner 116 being supplied with fuel gas via a gas line 117 provided with a solenoid valve 118.
  • the heat exchanger 30 can also be made of die-cast elements, or it can be designed as a conventional sheet metal part heat exchanger.
  • the heat exchanger 30 has, as shown in particular in FIG. 39, fins 123 which are penetrated by individual tubes 122.
  • the pipes 122 carry the water to be heated, as does the interior 121 of the double-walled heating shaft la.
  • the tubes 122 can be connected in series or in parallel to one another, the interior 121 being hydraulically connected in series or in parallel with the tubes 122.
  • the fins 123 have tubular condensate draining points 12.5 (FIG. 31) at the outflow end of the heating gases.
  • the individual fins 123 have bent collars 126 which close the heat exchanger 30 on the flue gas side with the exception of the openings 125.
  • a partition 127 is installed in the interior 121 of the heating shaft 1 a (FIG. 33), so that the water to be heated is forced to flow through the entire periphery of the heating shaft before it reaches the outlet 103 'from the inlet 103.
  • An exhaust system connects to a lower flange 128 of the heat exchanger 30 and at the same time has a condensate drain.
  • the double-walled heating shaft 1 a is composed of the two die-cast parts 111, 111 ′ forming the outer jacket. The two parts 111, 111 'are identical except for the inlet and outlet openings 103, 103'.
  • the inner casing (die-cast part 110) is formed in one piece in the embodiment according to FIGS. 31 to 33. It is necessary to connect the ends 129 and 130 or 131 and 132 of the two parts 111, 111 'of the outer casing with a vertical weld. The inner jacket can then be connected to the outer jacket via the weld seams 112.
  • the outer casing 111 which is made in one piece and the inner casing 110, which is also made in one piece, has a flange 143 or extension 142 projecting inwards or outwards.
  • the free edges of the flange 143 and the peripheral projection 142 are connected to the other part 111 and 110, respectively, via weld seams 112. This eliminates the need for weld seams between the ends 129, 130 and 131, 132 of the two parts of the outer jacket.
  • FIG. 38 shows a detail of the heating shaft 1 a according to FIGS. 31 to 33.
  • a sight glass 120 is provided, which is held on the outer casing H 1.
  • the sight glass 120 covers a recess 134 in a suitably shaped cup 133.
  • the recess 134 is surmounted by a collar 138 which projects through a recess in the outer jacket 111.
  • a peripheral weld seam 139 is located on the collar 138.
  • FIG. 41 shows a possibility of integrating a functional part into the inner wall 110, wherein penetration of two parts is avoided and is therefore also suitable for heating shafts according to FIG. 40.
  • a cup 133 having a recess 134 is cast into the inner wall 110.
  • the height of the cup 133 is dimensioned such that the outside of the cup 133 lies against the outer casing 111.
  • the outer jacket 111 has a recess which is larger than the recess 134 but smaller than the outer periphery of the cup 133.
  • This recess 135 can be closed by a cover 136 which has a recess 137.
  • a sealing disk can be inserted into the recess 135 and can be pierced by an electrode or the like measuring instrument.
  • the function of the flue gas guide device 106 can also be seen from FIG. 39.
  • the flue gas guiding device 106 prevents the formation of a bypass flow, which leads to a drop in efficiency.
  • FIGS. 34 to 37 correspond in terms of their operation to FIGS. 8 to 11, the ventilation tubes 24, instead of being arranged in the intermediate space 21, being located on the outer wall 18 and only the pipe ends 85 through the outer wall 18 or that Project connection 14 into the gap.
  • This arrangement has the advantage that there is no obstruction of the pipes when joining the inner and outer shafts. It is also possible to replace the pipes at a later date.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Fluid Heaters (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Heat Treatment Of Articles (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

L'invention concerne une section de chauffage à double paroi à échangeur de chaleur pour chauffe-eau à écoulement libre ou à circuit fermé chauffés par un brûleur ayant au moins une tubulure à lamelles de passage de l'eau retenue dans une section de chauffage en forme de double enveloppe remplie d'eau dans laquelle est agencée le brûleur. La tubulure à lamelles est reliée en série à la double enveloppe, du côté de l'eau, et est agencée dans la zone supérieure de la double enveloppe. Afin d'assurer une évacuation fiable de bulles de gaz se formant éventuellement dans un tel échangeur de chaleur, la tubulure à lamelles (4) n'est entourée par des prolongements (2) de la double enveloppe (1) que des deux côtés opposés qui forment un prolongement des lamelles (5) de la tubulure à lamelles (4). Ces prolongements (2) sont en communication avec une conduite d'eau supplémentaire. Une conduite d'alimentation ou de reflux est raccordée à un des prolongements (2).
EP92916041A 1991-07-22 1992-07-22 Section de chauffage a double paroi Expired - Lifetime EP0595945B1 (fr)

Applications Claiming Priority (19)

Application Number Priority Date Filing Date Title
AT1462/91 1991-07-22
AT0146291A AT396292B (de) 1991-07-22 1991-07-22 Gas-wasserheizer
AT2063/91 1991-10-17
AT0206391A AT396522B (de) 1991-10-17 1991-10-17 Wärmetauscher
AT954/92 1992-05-11
AT956/92 1992-05-11
AT0095592A AT396403B (de) 1992-05-11 1992-05-11 Brennkammerschacht
AT0095692A AT397136B (de) 1992-05-11 1992-05-11 Anschluss eines wärmetauschers an einen kaltwasserzulauf oder heizwasserablauf
AT955/92 1992-05-11
AT0095792A AT397143B (de) 1992-05-11 1992-05-11 Als doppelmantel aus gebildeter brennkammerschacht
AT957/92 1992-05-11
AT0095492A AT396402B (de) 1992-05-11 1992-05-11 Doppelwandiger brennkammerschacht
AT982/92 1992-05-14
AT0098292A AT398833B (de) 1992-05-14 1992-05-14 Brennkammerschacht
DE9207529U 1992-06-01
DE9207529 1992-06-01
AT1309/92 1992-06-29
AT0130992A AT399772B (de) 1992-06-29 1992-06-29 Brennkammerschacht eines wasserheizers
PCT/DE1992/000603 WO1993002326A1 (fr) 1991-07-22 1992-07-22 Section de chauffage a double paroi

Publications (2)

Publication Number Publication Date
EP0595945A1 true EP0595945A1 (fr) 1994-05-11
EP0595945B1 EP0595945B1 (fr) 1997-05-14

Family

ID=27575549

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92916041A Expired - Lifetime EP0595945B1 (fr) 1991-07-22 1992-07-22 Section de chauffage a double paroi

Country Status (5)

Country Link
EP (1) EP0595945B1 (fr)
AT (1) ATE153126T1 (fr)
DE (1) DE59208505D1 (fr)
ES (1) ES2102511T3 (fr)
WO (1) WO1993002326A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0922913A2 (fr) 1997-12-09 1999-06-16 Robert Bosch Gmbh Méthode et appareil pour évacuer des bulles de gaz d'une chambre de combustion refroidie par eau à paroi double d'un réchauffeur d'eau

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410483B (de) * 1999-01-21 2003-05-26 Vaillant Gmbh Gekühlte brennkammer
AT409696B (de) * 2000-05-04 2002-10-25 Vaillant Gmbh Durchlauferhitzer
CN101311641B (zh) * 2007-05-24 2012-07-04 韩效金 一种地暖专用常压锅炉
CN102538206A (zh) * 2010-12-24 2012-07-04 天津新技术产业园区天博科工贸有限公司 燃煤炉与换热器之间的火道连接管

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Publication number Priority date Publication date Assignee Title
BE533375A (fr) *
BE370028A (fr) *
US1641997A (en) * 1926-08-24 1927-09-13 Susong Jacob Andrew Hot-water heater
FR1087006A (fr) * 1953-09-04 1955-02-18 Jet Heet Perfectionnements à un ensemble chaudière-brûleur
DE1579930A1 (de) * 1966-09-03 1970-08-27 Junkers & Co Gasbeheizter Umlauf-Wassererhitzer
DE2115532B2 (de) * 1971-03-31 1973-03-01 Joh Vaillant KG, 5630 Remscheid Lamellenheizkoerper
DE2221801C3 (de) * 1972-05-04 1974-09-19 Fa. August Broetje, 2902 Rastede Heizungskessel
SE419793B (sv) * 1980-01-04 1981-08-24 Nolic I Borlenge Ab Borlenge S Anordning for lasning av ror- och slangkopplingar
DE8516968U1 (de) * 1985-06-11 1985-08-01 Reinert GmbH & Co KG, 5608 Radevormwald Zugfeste Rohrübergangsverbindung
EP0313837A1 (fr) * 1987-10-27 1989-05-03 Hans Dr. Viessmann Chaudière à gaz

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9302326A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0922913A2 (fr) 1997-12-09 1999-06-16 Robert Bosch Gmbh Méthode et appareil pour évacuer des bulles de gaz d'une chambre de combustion refroidie par eau à paroi double d'un réchauffeur d'eau
EP0922913A3 (fr) * 1997-12-09 2002-01-23 Robert Bosch Gmbh Méthode et appareil pour évacuer des bulles de gaz d'une chambre de combustion refroidie par eau à paroi double d'un réchauffeur d'eau

Also Published As

Publication number Publication date
EP0595945B1 (fr) 1997-05-14
WO1993002326A1 (fr) 1993-02-04
DE59208505D1 (de) 1997-06-19
ATE153126T1 (de) 1997-05-15
ES2102511T3 (es) 1997-08-01

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