WO1991011664A1 - Agencement de chauffage d'eau - Google Patents

Agencement de chauffage d'eau Download PDF

Info

Publication number
WO1991011664A1
WO1991011664A1 PCT/GB1991/000137 GB9100137W WO9111664A1 WO 1991011664 A1 WO1991011664 A1 WO 1991011664A1 GB 9100137 W GB9100137 W GB 9100137W WO 9111664 A1 WO9111664 A1 WO 9111664A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
heating arrangement
water heating
boiler
heat exchange
Prior art date
Application number
PCT/GB1991/000137
Other languages
English (en)
Inventor
Gerald Uttley
Original Assignee
Baxi Partnership Limited
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 GB909002223A external-priority patent/GB9002223D0/en
Priority claimed from GB909007861A external-priority patent/GB9007861D0/en
Application filed by Baxi Partnership Limited filed Critical Baxi Partnership Limited
Publication of WO1991011664A1 publication Critical patent/WO1991011664A1/fr
Priority to GB9213802A priority Critical patent/GB2255400B/en

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
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply

Definitions

  • WATER HEATING ARRANGEMENT This invention relates to a water heating arrangement and in particular a combined water heating/central heating arrangement.
  • a water heating arrangement comprising a primary hot water circuit and a secondary cold water circuit with both circuits including water-to- water heat exchange means located within a storage tank containing intermediate temperature water (hereinafter and in the claims simply called "intermediate water").
  • intermediate water as used herein and in the claims is to be construed as including any suitable liquid, gaseous and/or solid media serving to assist in the water heating capacity of the water heating arrangement.
  • the water-to-water heat exchange means is constituted by an inner and outer tube arrangement, one connected to the primary circuit and the other to the secondary circuit.
  • the water-to-water heat exchange means is constituted by a plurality of outer tubes, each of which houses one or more inner tubes.
  • the inner tube or tubes is connected to the primary circuit and the outer tube to the secondary circuit.
  • heat exchange tubes for the two circuits are arranged in separate parallel array.
  • the heat exchange tubes are preferably of coiled configuration.
  • the primary circuit is preferably connected to central heating radiator means and to the heat exchange means via a diverter valve, thermostatically controlled to ensure that the supply of hot water to the heat exchange means has priority when required.
  • the primary circuit preferably includes a hot water boiler, preferably gas-fired and preferably having multi-directional flue means.
  • the hot water boiler is located within the storage tank at or adjacent the top of the storage tank with at least a heat exchanger of the hot water boiler immersed in the intermediate water contained within the storage tank.
  • the hot water boiler is a fan-assisted gas boiler with the flue products being drawn through the top (or possibly the tank wall adjacent the top) of the boiler into a multi-directional flue means.
  • the inner tube or tubes of the water-to-water heat exchange means opens into the storage tank.
  • the central heating radiator means is part of a sealed central heating system including within the storage tank a water-to-water, heat exchange means.
  • the central heating system can be fed from a separate water supply tank.
  • a second and condenser type heat exchanger may be immersed within the intermediate water in the storage tank and in water flow communication with the heat exchanger of the hot water boiler.
  • the combined water heating arrangement according to this invention is designed for cylinder/airing cupboard, floor standing and wall mounted applications and consequently provides a siting flexibility not to be found in existing combined water heating arrangements.
  • Fig. 1. is a diagrammatic view of one embodiment of combined water heating arrangement according to the invention.
  • Fig. 2. is a sectional view through one form of the heat exchange means;
  • Fig. 3. is a diagrammatic view of a second embodiment of combined water heating arrangement;
  • Fig. 4 is a diagrammatic view of a third embodiment of a combined water heating arrangement according to the present invention;
  • Fig. 5 is a fragmentary diagrammatic view of a fourth embodiment;
  • Fig. 6 is a fragmentary diagrammatic view of a fifth embodiment;
  • Figs. 7 and 8 are respectively front and side views of a sixth embodiment of combined water heating arrangement;
  • Fig. 9 is a sectional view of another form of the heat exchange means;
  • Fig. 10 is a side view of the gas boiler of the combined water heating arrangement of Figs. 7 and 8; and
  • the combined heating boiler arrangement (Figs.l and 2) comprises an insulated intermediate water storage tank 10 within which is housed a coiled co-axial water-to-water heat exchanger 11.
  • the heat exchanger 11 forms part of a hot water primary circuit 12 and also of a cold water secondary circuit 13.
  • the primary circuit 12 includes a gas-fired water boiler 14 incorporating a fan-assisted gas burner (not shown) and a flue (also not shown) which is multi-directional to suit the particular application involved in any specified premises.
  • a sealed expansion vessel 15 is connected to the boiler 14 by a pipe 16.
  • the boiler hot water output is via a pipe 17 and is controlled by a pump 18 and a diverter valve 19.
  • the latter has two outputs, namely via a pipe 20 to central heating radiators generally indicated at 21 and via a pipe 22 into the inner tube 23 of the heater exchanger 11.
  • the diverter valve 19 directs hot water either to the radiators 21 or through the pipe 22 to the heat exchanger 11 with priority being given to the latter when required.
  • the water return from the central heating radiators 21 to the boiler 14 is via a pipe 24 and the pipe 16.
  • the heat exchanger inner tube 23 is also connected to the pipe 16 for water return from the heat exchanger 11 to the boiler 14.
  • a blow-down pipe 25 incorporating a safety valve 26 connects the boiler output pipe 17 with the interior of the intermediate water tank 10.
  • the secondary circuit 13 is connected to the cold water mains supply from which cold water is delivered to the outer tube 27 of the coiled heat exchanger 11 via a pipe 28 and also to the domestic water supply 29 via a pipe 30.
  • the outflow of heated water from the heat exchanger tube 27 is via a mixing valve 31 to the domestic water supply 29, the cold water supply from the pipe 30 also passing through the mixing valve 31.
  • the heat exchanger tube 27 may alternatively be fed from a cistern supply.
  • the intermediate water 32 in the storage tank 10 when required, receives additional heat from the boiler primary circuit 12 via the heat exchanger 11.
  • the diverter valve 19 and the pump 18 are thermostatically controlled.
  • a ball float 32 controlling a ball valve 43 incorporated in a pipe 33 extending from the pipe 28 into the tank 10.
  • a stop cock 34 is also incorporated in the pipe 33. The stop cock may alternatively be disposed at location 34A.
  • the storage tank 10 is provided, as is usual, with an air vent pipe 35 and a warning or overflow pipe 36.
  • An optional water top-up system for the storage tank 10 is indicated in dotted lines and comprises a pipe 37 connected to the boiler water output pipe 17 and the storage tank 10, a compressor 38 and a one-way non-return valve 39 with the compressor 38 being controlled by a float switch or pressure switch 40.
  • the heat exchangers 41 and 42 are of single pipe construction, the heat exchanger 41 being connected between the diverter valve 19A, i.e. boiler output pipe 17A, and the boiler return pipe 16A while the heat exchanger 42 is fed from the cold water mains supply pipe 28A or a supply cistern.
  • the combined water heating arrangement comprises an insulated intermediate water storage tank 50 within which is housed a coiled coaxial water-to-water heat exchanger 51.
  • a gas fired water boiler 52 Disposed within the storage tank 50 at the top thereof is a gas fired water boiler 52 provided with a heat exchanger 53 of cast iron or copper for example.
  • the gas fired water boiler 52 is fan assisted as indicated at 54 and the combustion products from the gas fired water boiler 52 are directed through the top of the storage tank 50 into a multi ⁇ directional flue system (not shown).
  • the gas fired water boiler 52 is substantially immersed in the intermediate water contained within the storage tank 50 and it is to be noted that the heat exchanger 53 at least of the gas fired water boiler 52 is always immersed within the intermediate water.
  • the heat exchanger 51 and the water boiler 52 constitute an intermediate heat circuit system 55 in communication with a secondary domestic hot water system 56.
  • a central heating system 57 constituting a primary circuit is in water flow communication with the intermediate water contained within the storage tank 50.
  • the intermediate heat circuit system 55 incorporates the inner tube 51A of the heat exchanger 51, which tube 51A is open to the intermediate water within the storage tank 50 in the region of the heat exchanger 53 as indicated at 58, the tube 51A being connected by a pump 59 external of the storage tank 50 and a pipe 60 to the heat exchanger 53.
  • the pump 59 has at each side, as is usual, a shut-off valve or cock 61.
  • the secondary domestic hot water system is connected to the cold water mains supply from which cold water is delivered to the outer tube 51B of the heat exchanger 51 via a pipe 62 and also to the . domestic water supply via a pipe 63.
  • the outflow of heated water from the heat exchanger tube 51B is via a mixing valve 64 to the domestic water supply, the cold water supply from the pipe 62 also passing through the mixing valve. 64 via a pipe 65.
  • the supply to pipe 62 may be either from the water mains supply or from a cistern.
  • a ball float 66 controlling a ball valve 67 is incorporated within the storage tank 50 to control the level of the intermediate water, the water supply being from the pipe 62 via a pipe 68 which incorporates a control valve 69.
  • the storage tank 50 is provided with an overflow pipe 70 and a top air vent 71.
  • the primary or central heating system 57 comprises central heating radiators generally indicated at 72, the usual flow control valves being indicated at 73.
  • the central heating system 57 is connected to the intermediate water of the storage tank 50 via a pipe 74 incorporating a pump 75 with at each side shut valves 76.
  • This pipe 74 is the water supply pipe.
  • the return pipe 77 from the system is also connected into the storage tank 50 at a lower level than the outlet to which the pipe 74 is connected.
  • the water heating arrangement of Fig. 5 is identical with that described with reference to Fig. 4 save that the central heating system is a sealed system, the water inlet and outlet pipes 74A and 77A respectively being connected within the storage tank 50A by a coiled tube 78 providing a water-to-water heat exchange relationship with the intermediate water contained within the storage tank 50A.
  • the central heating system may be fed from a separate water supply tank.
  • a secondary heat exchanger of the condensing type indicated at 79 which heat exchanger is formed for example of aluminium or stainless steel.
  • This heat exchanger has the pipe 60B connected to its inlet and a pipe 80 connects its outlet with the heat exchanger 53B.
  • the open end 58B of the water-to-water coaxial tube heat exchanger 81 (identical to heat exchanger 51) is elevated in this embodiment to the region of the gas boiler exchanger 53B.
  • the combined water heating arrangement permits a reduction in the overall weight of the storage tank since it is not a sealed tank; allows a reduction in expansion vessel capacity; provides optional topping-up of the primary circuit from the intermediate tank when required.
  • the water-to-water heat exchanger 90 is constituted by an outer tube 91 housing four inner tubes 92.
  • the water-to-water heat exchanger 90 is located above the boiler 93, the gas burner for the latter being indicated at 94, and the suction fan at 95.
  • the latter directs burnt gases to a multi-directional concentric flue indicated generally at 96 which handles combustion products from the boiler and combustion airflow to the boiler.
  • the gas supply to the gas burner 94 is via pipe 97 incorporating a control valve 98.
  • the electrical supply to the combined water heating arrangement is indicated at 99 and is fed to a control box 100 to be described later with reference to Fig. 11 for controlling the gas valve 98, burner ignition and operation, pumps operation and other electrical components described with reference to Fig. 11.
  • the water connections are water mains supply feed 101, hot water draw off 102, central heating system flow 104 and central heating return 103.
  • An intermediate panel 105 is arranged above the intermediate water to contain the latter and define a compartment 106.
  • a vent 107 is arranged in this compartment 106 which also houses a float 108 controlling a valve 109 connected to the mains water cold feed for topping-up purposes should this prove necessary. Any such topping-up water is delivered into the storage tank 110 by a pipe 111.
  • Fig. 11 there is shown details of the circuitry of the control box indicated at 100 in Fig. 7.
  • This circuitry in addition to controlling the gas valve 98 also controls (a) ignition spark and sensing 112; (b) the fan 95; (c) the intermediate circuit pump 113 for the boiler and domestic hot water supply - see, for example, the pump 59, boiler 52 and hot water supply via mixer valve 64 of the combined water heating arrangement of Fig. 4; (d) the central heating pump 114 - see the pump 75 of the Fig. 4 arrangement.
  • the electrical mains supply 99 is connected via a storage tank thermostat 115 and a double pole relay 116 to a printed circuit board 117 to which is electrically connected the fan 95, the gas valve 98 which is of the double solenoid type, a gas pressure switch 118 and the ignition spark and sensor 112.
  • a normally-closed overheat thermostat 119 is in circuit with the gas valve 98.
  • the thermostat 119 may alternatively be disposed, in series arrangement, between the storage tank thermostat 115 and the double pole relay 116.
  • the double pole relay 116 is electrically coupled to the intermediate circuit pump 113 which is provided with an overrun thermostat control 120 and a flow switch or water heating thermostatic control 121.
  • the electricity mains supply 99 is also connected directly to the central heating pump 114 with which is also electrically coupled a room thermostat 122 and a clock control 123.
  • the circuitry is shown in Fig. 11, in a bulk water (intermediate water) store heating mode, in which mode the gas boiler 93 for example is on (operational), the intermediate pump 113 is on and the central heating pump 114 is off (non-operational).
  • pump 113 is on, pump .114 is off and gas boiler is off.
  • the double pole relay 116 is open, tank thermostat 115 is open and the pump overrun thermostat 120 and flowswitch or hot water thermostat 121 are both closed (operational).
  • the circuitry compared with that shown in Fig. 11 has the double pole relay 116 is open, tank thermostat 115 is closed, flow switch of water heating thermostat 121 is closed room thermostat 122 is closed and the clock control 123 is operational.

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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)
  • Water Supply & Treatment (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

Un agencement de chauffage d'eau et en particulier un agencement combiné de chauffage d'eau/chauffage central comprend un appareil de chauffage d'eau qui est amélioré par rapport aux systèmes existants de chauffage d'eau. L'agencement de chauffage d'eau comprend un circuit d'eau chaude primaire et un circuit d'eau froide secondaire, les deux circuits comportant des moyens d'échange thermique eau/eau placés dans un réservoir et contenant de l'eau à température intermédiaire. L'agecement de chauffage d'eau combiné est conçu pour un placard ballon d'eau/séchoir à ligne, peut être du type autonome ou mural et par conséquent offre une souplesse d'installation jusqu'alors introuvable dans les agecements existants de chauffage d'eau combinés.
PCT/GB1991/000137 1990-02-01 1991-01-30 Agencement de chauffage d'eau WO1991011664A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9213802A GB2255400B (en) 1990-02-01 1992-06-29 Water heating arrangement

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB909002223A GB9002223D0 (en) 1990-02-01 1990-02-01 Water heating arrangement
GB9002223.7 1990-02-01
GB909007861A GB9007861D0 (en) 1990-04-06 1990-04-06 Water heating arrangement
GB9007861.9 1990-04-06

Publications (1)

Publication Number Publication Date
WO1991011664A1 true WO1991011664A1 (fr) 1991-08-08

Family

ID=26296579

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/000137 WO1991011664A1 (fr) 1990-02-01 1991-01-30 Agencement de chauffage d'eau

Country Status (3)

Country Link
AU (1) AU7231991A (fr)
IE (1) IE910330A1 (fr)
WO (1) WO1991011664A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0759526A1 (fr) * 1995-08-22 1997-02-26 Robert Bosch Gmbh Accumulateur d'eau chaude, notamment pour la production d'eau chaude sanitaire dans une installation de chauffage central
WO2007010585A2 (fr) * 2005-07-22 2007-01-25 O.T.M.A. Snc Di Spaggiari & Nasi Appareil de raccordement multi-usage pour chaudiere fixee au mur
WO2009015435A1 (fr) * 2007-08-01 2009-02-05 Hydox Pty Ltd Dispositif de chauffage de fluide
WO2010064076A1 (fr) * 2008-04-04 2010-06-10 Turk Demir Dokum Fabrikalari Anonim Sirketi Échangeur secondaire
WO2023233161A1 (fr) * 2022-06-01 2023-12-07 Remit Zero Limited Stockage d'énergie thermique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE410435C (de) * 1923-12-05 1925-03-06 Munk & Schmitz Akt Ges Maschf Waermeuebertragungsvorrichtung, insbesondere Warmwasserbereiter, mit Doppelroehren
FR1472229A (fr) * 1966-01-27 1967-03-10 Chauffe-eau
DE2239260B2 (de) * 1971-08-10 1981-03-26 Saunier Duval, Paris Brauchwasserbereiter mit innerem Brauchwasserrohr und hierzu koaxialem äußeren Heizwasserrohr

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE410435C (de) * 1923-12-05 1925-03-06 Munk & Schmitz Akt Ges Maschf Waermeuebertragungsvorrichtung, insbesondere Warmwasserbereiter, mit Doppelroehren
FR1472229A (fr) * 1966-01-27 1967-03-10 Chauffe-eau
DE2239260B2 (de) * 1971-08-10 1981-03-26 Saunier Duval, Paris Brauchwasserbereiter mit innerem Brauchwasserrohr und hierzu koaxialem äußeren Heizwasserrohr

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0759526A1 (fr) * 1995-08-22 1997-02-26 Robert Bosch Gmbh Accumulateur d'eau chaude, notamment pour la production d'eau chaude sanitaire dans une installation de chauffage central
WO2007010585A2 (fr) * 2005-07-22 2007-01-25 O.T.M.A. Snc Di Spaggiari & Nasi Appareil de raccordement multi-usage pour chaudiere fixee au mur
WO2007010585A3 (fr) * 2005-07-22 2007-07-12 O T M A Snc Di Spaggiari & Nas Appareil de raccordement multi-usage pour chaudiere fixee au mur
WO2009015435A1 (fr) * 2007-08-01 2009-02-05 Hydox Pty Ltd Dispositif de chauffage de fluide
CN101878399A (zh) * 2007-08-01 2010-11-03 海多克斯集团有限公司 流体加热器
WO2010064076A1 (fr) * 2008-04-04 2010-06-10 Turk Demir Dokum Fabrikalari Anonim Sirketi Échangeur secondaire
WO2023233161A1 (fr) * 2022-06-01 2023-12-07 Remit Zero Limited Stockage d'énergie thermique

Also Published As

Publication number Publication date
IE910330A1 (en) 1991-08-14
AU7231991A (en) 1991-08-21

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