EP0828116A2 - Système de chauffage - Google Patents

Système de chauffage Download PDF

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Publication number
EP0828116A2
EP0828116A2 EP97306944A EP97306944A EP0828116A2 EP 0828116 A2 EP0828116 A2 EP 0828116A2 EP 97306944 A EP97306944 A EP 97306944A EP 97306944 A EP97306944 A EP 97306944A EP 0828116 A2 EP0828116 A2 EP 0828116A2
Authority
EP
European Patent Office
Prior art keywords
water
heating
hot water
storage vessel
vessel
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.)
Withdrawn
Application number
EP97306944A
Other languages
German (de)
English (en)
Other versions
EP0828116A3 (fr
Inventor
William John Lloyd
Roy Bratley
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.)
Caradon Ideal Ltd
Original Assignee
Caradon Ideal Ltd
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 Caradon Ideal Ltd filed Critical Caradon Ideal Ltd
Publication of EP0828116A2 publication Critical patent/EP0828116A2/fr
Publication of EP0828116A3 publication Critical patent/EP0828116A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F24D17/00—Domestic hot-water supply systems

Definitions

  • This invention relates to heating systems, and it is concerned particularly with systems for heating water for domestic use.
  • heating systems can be divided into two categories: heating systems having a hot water storage vessel; and heating systems comprising an 'instantaneous' water heater, e.g a gas boiler.
  • heating systems of the first kind the water in the storage vessel is heated to a desired temperature, e.g. by an electrical heating element or by hot water passed through a heating coil located in the vessel, and on demand heated water is drawn from the vessel, and the vessel is replenished with unheated water.
  • a long recovery period during which no heated water at the desired temperature is available, follows periods of heavy demand, and a large space is required to house a storage vessel of sufficient capacity to supply even normal levels of demand of an average household.
  • Instantaneous water heaters provide a relatively compact alternative, and they can supply heated water for an unlimited period of time.
  • heating systems utilising instantaneous water heaters suffer the disadvantage of a low heated water flow rate in comparison with heating systems having a hot water storage vessel.
  • the flow rate from instantaneous water heaters is sufficient to meet modest levels of demand, an extended period of time is required to produce a large volume of heated water, e.g. in order to fill a bath.
  • the present invention addresses the disadvantages of the two known types of heating systems by providing a heating system comprising a gas boiler for heating water flowing through a potable hot water supply line, a potable hot water storage vessel comprising means for heating water contained in the vessel, the vessel being connected to the hot water supply line downstream of the boiler for hot water to flow from the vessel into the supply line when water heated by the boiler is flowing therethrough.
  • the water in the storage vessel is heated by a heat exchange with a fluid heated by the boiler.
  • a heating system according to the present invention can satisfy an initial demand for potable hot water at a high flow rate, allied with the ability to provide a continuous supply of heated potable water at a lower flow rate, thereby combining the advantages of both the known types of heating systems. Also, a smaller storage vessel than would be required in a known system consisting of a storage vessel can be used.
  • a boiler 1 has a gas burner for heating water flowing through a potable or sanitary hot water supply line 2 for domestic consumption and for heating water circulated through a primary heating circuit 5,8.
  • the water in the supply line and the heating circuit can be heated directly by the gas burner in distinct flow paths through a duplex heat exchanger surrounding the burner, or the water in the supply line can be heated in a secondary heat exchanger by indirect heat from the water in the heating circuit.
  • the following description is given with reference to a boiler having a duplex heat exchanger.
  • An insulated hot water storage vessel or tank 4 is connected in parallel with the heat exchanger to the potable hot water supply line 2 by an inlet pipe 9 and an outlet pipe 6.
  • the outlet pipe 6 includes a wax thermostat 7.
  • the heating circuit includes two flow paths: the heat exchanger is connected in series with a diverter valve 11 and a heating coil 12 located within the vessel 4 to complete a first flow path 3,5; and a second flow path 3,8 is defined by the connection in series of the diverter valve 11 and a plurality of space heaters (not shown).
  • the gas burner When a demand for heated water in the potable hot water supply line 2 is sensed, the gas burner is ignited and the water flowing through the heat exchanger of the boiler is heated. If the temperature of water in the outlet pipe 6 of the storage vessel 4 is above a threshold determined by the wax thermostat 7, the flow path through the outlet pipe will be open and heated water from the storage vessel 4 will supplement the flow of heated water flowing from the boiler in the potable hot water supply line 2. As the water is drawn from the storage vessel it is replenished with unheated potable water. When the temperature of water in the outlet pipe 6 drops below the predetermined temperature threshold, the wax thermostat 7 closes to prevent flow of water from the storage vessel until the temperature of water therein rises above the threshold again.
  • water from the storage vessel 4 adds to the flow of water from the heat exchanger of the boiler to provide a high initial potable water flow rate, and thereafter potable hot water can be supplied from the heat exchanger of the boiler alone at a lower constant flow rate for an unlimited period of time.
  • the water in the central heating circuit can be heated and circulated around the first flow path 3,5 or the second flow path 3,8 depending on the position of the diverter valve 11. Heated water circulated around the first flow path 3,5 passes through the coil 12 within the storage vessel 4 to thereby heat the water therein.
  • the heating of water in the storage vessel could take priority over the supply of the space heaters or vice versa.
  • the diverter valve is preferably controlled to shut off delivery of hot water to the heating coil of the water storage vessel when the water contained in the vessel is at a predetermined temperature.
  • the invention is equally applicable to dedicated domestic water heating systems as it is to combined domestic and central heating system.
  • the storage vessel 4 could be heated by any suitable means, e.g. an electric element.
  • the wax thermostat 7 could be replaced by any suitable separate thermostat and valve.

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-Pump Type And Storage Water Heaters (AREA)
EP97306944A 1996-09-09 1997-09-08 Système de chauffage Withdrawn EP0828116A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9618773 1996-09-09
GBGB9618773.7A GB9618773D0 (en) 1996-09-09 1996-09-09 A heating system

Publications (2)

Publication Number Publication Date
EP0828116A2 true EP0828116A2 (fr) 1998-03-11
EP0828116A3 EP0828116A3 (fr) 1998-10-14

Family

ID=10799632

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97306944A Withdrawn EP0828116A3 (fr) 1996-09-09 1997-09-08 Système de chauffage

Country Status (2)

Country Link
EP (1) EP0828116A3 (fr)
GB (1) GB9618773D0 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2457282A (en) * 2008-02-08 2009-08-12 Dyson Technology Ltd Domestic appliance
CN115164399A (zh) * 2022-06-28 2022-10-11 广东万家乐燃气具有限公司 一种带净水加热功能的燃气热水器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4363221A (en) * 1979-08-20 1982-12-14 Singh Kanwal N Water heating system having a heat pump
FR2551187B1 (fr) * 1983-08-26 1988-02-12 Laurent Francois Procede et installation pour la production d'eau chaude sanitaire a partir d'une installation generatrice de chaleur a bruleur
DE8914016U1 (de) * 1989-11-28 1990-04-19 San-Ko Sanitär-Heizung-GmbH, 6638 Dillingen Zentrale - Speicher - Kombination zur Brauchwarmwasserversorgung auf kleinstem Raum
GB9502673D0 (en) * 1995-02-11 1995-03-29 Benson Neville I Combined shower

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2457282A (en) * 2008-02-08 2009-08-12 Dyson Technology Ltd Domestic appliance
CN115164399A (zh) * 2022-06-28 2022-10-11 广东万家乐燃气具有限公司 一种带净水加热功能的燃气热水器

Also Published As

Publication number Publication date
EP0828116A3 (fr) 1998-10-14
GB9618773D0 (en) 1996-10-23

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