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
  • F24H9/00—Details
  • F24H9/0005—Details for water heaters
  • F24H9/0036—Dispositions against condensation of combustion products
• • 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
  • F24H1/30—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 being built up from sections
  • F24H1/32—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 being built up from sections with vertical sections arranged side by side

Definitions

• Boilers with heat transfer fluid and with liquid, solid, gaseous or electric fuel generally consist of two distinct parts:
• the burner or hearth the function of which is to produce a flame from a fuel
• the exchanger body the function of which is to allow heat exchange and the combustion flame, with the heat transfer fluid (often water) to be heated, and this by means of a heat conducting wall.
• the heat transfer fluid often water
• This form of conductive wall is generally complex in order to provide a large exchange surface in a reduced volume.
• boilers whose heating body consists of several heat exchanger elements tight against each other (this is generally the case of boilers with heat exchangers in cast iron), and water. flows from one element to another.
• These exchanger elements require devices for distributing the fluid flow, generally an internal distribution tube.
• the first exchanger element “sees” all of the combustion gases pass at their maximum temperature
• the next exchanger element “sees” the gases at a lower temperature, (effectively, there are had exchange with the first element) and so on, the temperature of the gases gradually decreases with the passage of the different exchanger elements, up to the outlet of the heating body, towards the chimney.
• thermosyphon circuit
• thermostatic valve in the heating body (in general in single steel or cast iron heating bodies),
• the present invention allows, whatever the geometry of the exchanger (gas path and hydraulic path), the hearth mode (blind, open), and regulation on the installation, to allow an optimum and homogeneous heat exchange. on the exchanger (s) of the heating body.
• the heating body consists of a juxtaposition of several exchanger elements and at least one of these exchangers, includes a thermostatic valve which regulates the flow of fluid circulating in the exchanger according to its own temperature. internal.
• the heating body consists of several exchanger elements assembled by sleeves or niples, at least one of these niples comprises a thermostatic valve, not adjustable from the outside.
• at least one of the exchanger elements has a device for centering the thermostatic valve, in the form of a cavity or lug arranged on the internal wall of said exchanger element.
• each exchanger element outlet is equipped with a thermostatic valve, which valve can be controlled by a safety temperature contact.
• an insulation is interposed between the heating body and the end walls, in the form of an insulating seal, which seal is removable and not integral with any of the construction elements of the boiler. .
• the basic structure of the boiler comprises angle beams with uprights which allow the support of a domestic hot water tank for example. Which uprights can be added by interlocking or fixing on the angle beams.
• the flow manifold has a closable opening at its upper part which allows filling from above, of the heating body alone.
• at least one of the heat exchanger elements has a closable opening at its upper part allowing filling from above the heating body.
• FIG. 1 shows the boiler in section.
• FIG. 2 represents an elevation, in section, of an embodiment of the boiler.
• FIG 3 shows the thermostatic valve inserted in the exchanger element.
• Figure 4 shows the boiler with the addition of a domestic hot water tank.
• FIG. 6 is a section along A-A of FIG. 5.
• FIG. 1 represents a section along AA of FIG. 2.
• the heating body made up of exchanger elements 1, is placed on the circuit of the heat transfer fluid which comprises a low collector 3 and a high collector 4.
• a circulation pump allows '' irrigate the circuit.
• the actual heating body consists of several juxtaposed exchanger elements 1 which are each connected by means of hoses 22 to the bottom 3 and top 4 collectors.
• the heating body is closed at its ends on one side by a wall 6 which carries the burner and, on the other side, by a wall 7 which has an opening for the exhaust of gases and fumes.
• the heating body consisting of the exchanger elements 1 and the end walls 6 and 7 are assembled together by means of tie rods 5 with interposition of insulation joints 2 between each of the walls and the ends of the heating body.
• Figure 3 shows the installation of a thermostatic valve 11 at the opening 10 of an exchanger element 1. This thermostatic valve 11 is held in place by means of a centering device 12, figure 3.1, lug or hole provided in the inner wall of the exchanger element. The hose 22 or its nut abuts on the valve 11 and holds it in place.
• the heat transfer fluid is cold.
• the thermostat of the boiler requests the rise in temperature of the fluid by authorizing the start-up of the burner.
• the thermostatic valve or valves 11 with autonomous regulation are closed because the temperature of the fluid in the exchanger element concerned is, at the start, lower than the preprogrammed opening setpoint of said thermostatic valves.
• the heat transfer fluid under the influence of the burner, reaches the set temperature for opening the valves 11, the fluid, under the pressure of the circulation pump, begins to circulate in the boiler and irrigates gradually and not necessarily simultaneously , the exchanger elements 1.
• each of the valves 11 opens and thus allows a flow rate suitable for local heat exchange in all the exchanger elements 1 equipped with said thermostatic valve.
• a variant consists in giving an exchange priority scale to the exchanger elements by equipping them with thermostatic valves 11 provided with different instructions (for example, one opens at 60 °, another opens at 65 °, etc.).
• One of the heat exchanger elements 1d may not include thermostatic valves. This configuration makes it possible to maintain minimum circulation in the installation and prevents deterioration of the circulator. Likewise, this makes it possible to operate the last exchanger 1d in condenser mode if the heating return temperatures are below the dew point; the condensers are recovered in the casing 20 (FIG. 5) and discharged through an orifice 19.
• the boiler leaving temperature changes over a wide range of temperatures, from the heating circuit return temperature to the weighted average temperature corresponding to the opening temperature of the thermostatic valves 11.
• all the exchanger elements 1 of the heating body can be fitted with thermostatic valves; the heating body, between the return collectors 3 and departure 4, a flexible or non-flexible pipe 26, forming a dual pass included in the construction of the boiler.
• This configuration allows operation at very low temperatures.
• the heating body consists of traditional exchanger elements 1 (FIG. 5) connected together by sleeves or niples 13 which provide the hydraulic connection from one to the other of the elements 1.
• the body heating element is closed by means of the tubular casing 20 consisting of two half-shells and end walls 6 and 7 which are assembled by tie rods 5.
• a thermostatic valve 11 can be installed in one of the plates 13, preferably on the starting route, thus allowing the timing of the irrigation of the elements concerned.
• Valves 16 and 17 are useful for frost prevention. Indeed, the outlet manifold 4 of the boiler has an opening 15 to which is detachably fixed, an automatic plug or air vent.
• an additive anti-freeze for example
• the insulating joints 2 are clamped between each wall 6, 7, and the ends of the exchanger elements 1 constituting the heating body, by tightening the tie rods 5 which also ensures the tightness of the smoke circuit.
• the tie rods 5 can support the exchanger elements 1 by means of hooks 18 ( Figure 1). These insulating joints 2 can simply be supported by the tie rods 5 located in the lower part ( Figure 4.1).
• This boiler has the particularity, apart from its multiple construction arrangements, of being able to receive (FIG. 4) a domestic hot water tank 23 placed above the heating body, without resting on it.
• an advantageous construction method by fitting the boiler on the basis of two angle beams 24, makes it possible to hang a wall balloon 23 (standard or not), on the vertical uprights 25 associated with angle beams 24 which can be telescopic.
• the angle beams 24 also allow the bottom plate 7 to be maintained and, by fitting a tube 25 (preferably square), the support for the domestic hot water tank 23.

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• 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)
• Steam Or Hot-Water Central Heating Systems (AREA)
• Control Of Steam Boilers And Waste-Gas Boilers (AREA)
• Air Supply (AREA)
• Temperature-Responsive Valves (AREA)
• Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Applications Claiming Priority (1)

Publications (2)

Family

ID=9489105

Family Applications (1)

Country Status (5)

Family Cites Families (3)

• 1996
  • 1996-10-30 DE DE69618825T patent/DE69618825T2/de not_active Expired - Fee Related
  • 1996-10-30 EP EP96937368A patent/EP0954726B1/de not_active Expired - Lifetime
  • 1996-10-30 AT AT96937368T patent/ATE212431T1/de not_active IP Right Cessation
  • 1996-10-30 AU AU74991/96A patent/AU7499196A/en not_active Abandoned
  • 1996-10-30 WO PCT/FR1996/001707 patent/WO1998019114A1/fr active IP Right Grant

Non-Patent Citations (1)

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