EP1248051A1 - Appareil chauffant - Google Patents

Appareil chauffant Download PDF

Info

Publication number
EP1248051A1
EP1248051A1 EP01201277A EP01201277A EP1248051A1 EP 1248051 A1 EP1248051 A1 EP 1248051A1 EP 01201277 A EP01201277 A EP 01201277A EP 01201277 A EP01201277 A EP 01201277A EP 1248051 A1 EP1248051 A1 EP 1248051A1
Authority
EP
European Patent Office
Prior art keywords
heating device
water
channels
guide tube
inlet
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
EP01201277A
Other languages
German (de)
English (en)
Other versions
EP1248051B1 (fr
Inventor
Glenn Rexwinkel
Jan Harold Siderius
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.)
Storvatt BV
Original Assignee
EGGERSUND BV
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 EGGERSUND BV filed Critical EGGERSUND BV
Priority to AT01201277T priority Critical patent/ATE330188T1/de
Priority to EP01201277A priority patent/EP1248051B1/fr
Priority to DE60120635T priority patent/DE60120635D1/de
Publication of EP1248051A1 publication Critical patent/EP1248051A1/fr
Application granted granted Critical
Publication of EP1248051B1 publication Critical patent/EP1248051B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F24H1/0054—Gas- or oil-fired immersion heaters for open containers or ponds

Definitions

  • This invention relates to a heating device for heating a reservoir of water.
  • Tubs and pools that are used in gardens and remote areas can not always be heated with electricity or natural gas because these energy sources are inaccessible and technically difficult to unstall and maintain.
  • Heating hot tubs and spa units using wood, coal and/or other fuels is a good alternative. Also because the heating is very fast. Solid fuels are available in nearly all parts of the world. Furthermore, most solid fuel burning heaters need little maintenance, which is beneficial when operating in remote areas.
  • An effective method for heating water is direct contact of the water with a surface heated by the hot combustion gasses.
  • US patent number 4 455 997 describes a L-shaped heating unit composed of a highly heat conductive metal, such as aluminum. The unit is entirely submerged in the tank of water except for air and fuel inlets and an exhaust outlet.
  • a heating device which comprises:
  • the heat exchanger provides for an improved use of the heat generated by burning the fuel, which results in a rapid heating of the water.
  • a first guide tube is connected to the at least one water inlet and the open end of the first guide tube is positioned lower than the water inlet.
  • a second guide tube is connected to the at least one water outlet and the open end of the second guide tube is positioned higher than the water outlet.
  • heated water has the tendency to flow upwardly.
  • a natural convection flow will be generated when the water is heated. This provides for a good circulation of the water out of the tank through the heating device providing for an improved efficiency.
  • the heat exchanger comprises finns arranged in the first channels.
  • the fuel inlet comprises a lid for covering the fuel inlet, and the lid comprises a hollow handle, through which air can flow to the burning zone.
  • a chimney is connected to the gas outlet to arrange a perforated sleeve substantially concentric around the chimney.
  • the perforated sleeve will prevent direct contact to the chimney and because of the perforations air can flow freely through the perforations and thus cool the sleeve.
  • the outer, bottom surface of the housing is convex.
  • the walls of the housing could get very hot.
  • the bottom surface is totally flat, air bubbles could get caught or be formed underneath the bottom. As a result the temperatures of the bottom surface could get very high.
  • the bubbles will easily flow away. The development of accessively high temperatures at the interface between the bubbles and the bottom is therefore avoided.
  • Figure 1 shows in perspective view an outdoor tank with a heating device according to the invention.
  • Figure 2 shows in perspective view and partly cut away the heating device according to figure 1.
  • FIG 1 the outdoor tank 1 is shown with a heating device 2 according to the invention.
  • the outdoor tank 1 is composed out of wooden slats 3, which are kept together by two rings 4.
  • a fence 21 is arranged infront of the heating device 2, in order to prevent contact of users of the tank with hot parts of the heating device 2.
  • the heating device 2 is shown in more detail.
  • the heating device 2 comprises a housing 5. At the bottom of the housing 5 wood can for example be burned.
  • the housing 5 further comprises a fuel inlet 7 which is covered by a lid 8, having a hollow handle 9.
  • a separate air inlet 23 is arranged in the fuel inlet 7.
  • a heat exchanger 10 arranged in the housing 5 in the housing 5 is a heat exchanger 10 arranged.
  • This heat exchanger 10 has a number of horizontal tubes 11, which extend between two side walls of the housing 5. These tubes 11 form the second channels through which the water is transported.
  • plates 12 On the outside of these tubes 11 are plates 12 arranged, which enlarge the heat exchanging surface of the first channels through which the combustion gasses flow.
  • a chimney 13 Above the heat exchanger 10 a chimney 13 is arranged, which provides the gas outlet.
  • a perforated sleeve is arranged, which prevents direct contact with the chimney 13.
  • a first guide tube 15 is arranged over the inlets 16 of the tubes 11. This guide tube 15 is arranged such that the open end 17 of the guide tube 15 is positioned lower than the inlets 16.
  • a second guide tube 18 is arranged over the outlets of the tubes 11.
  • the open end 19 of the second guide tube 18 is positioned higher than the outlets of the tubes 11.
  • the heater 2 is mounted to the side wall of the outdoor tank, hot tube, spa unit or the like by e.g. L-shaped brackets 22. These brackets 22 are positioned at the same side of the heater 2 as the second guide tube 18. In this way the hot water leaves the heater 2 at the side of the wall and direct contact of the hot water by persons is prevented.
  • a fence 21 of wood or other suitable screening material could be mounted on four other L-shaped brackets 22 to prevent direct contact of the hot metal surface of the heater unit by persons in the water.
  • the heater device 2 is constructed of a single shell of highly corrosion resistant material that can also withstand high temperatures, such as stainless steel.
  • the thickness of the heater wall is e.g. about 1 mm. Under normal operation conditions the temperatures are low since the heater is almost fully submerged. However, if by mistake the heater is heated without being submerged, temperatures may become very high.
  • the heat conductivity of the metal is not important since the heating rate is fully determined by the heat transfer from the gas inside the firebox to the heater walls.
  • the bottom wall of the heater may be folded in a cross in order to position the center of the bottom slightly lower than the edges of the bottom of the heater. In this way gas bubbles that may be caught or formed underneath the bottom are forced away from the bottom. And the development of excessively high temperatures at the interface between the bubbles and the bottom is avoided.
  • the firebox fuel access and air intake may be closed with a lid 8.
  • the lid contains two parallel rims 20 folded downward and a hollow handle 9 on top.
  • the lid is perforated at the connection point between the lid and the hollow handle, so air can flow through the handle.
  • air is sucked through the hollow handle because of the low pressure inside the firebox. In this way the handle is cooled.
  • the amount of air added to the firebox can be adjusted by sliding the lid over the air intake.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Housings, Intake/Discharge, And Installation Of Fluid Heaters (AREA)
  • Solid-Fuel Combustion (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
EP01201277A 2001-04-06 2001-04-06 Appareil chauffant Expired - Lifetime EP1248051B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT01201277T ATE330188T1 (de) 2001-04-06 2001-04-06 Heizungsgerät
EP01201277A EP1248051B1 (fr) 2001-04-06 2001-04-06 Appareil chauffant
DE60120635T DE60120635D1 (de) 2001-04-06 2001-04-06 Heizungsgerät

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01201277A EP1248051B1 (fr) 2001-04-06 2001-04-06 Appareil chauffant

Publications (2)

Publication Number Publication Date
EP1248051A1 true EP1248051A1 (fr) 2002-10-09
EP1248051B1 EP1248051B1 (fr) 2006-06-14

Family

ID=8180118

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01201277A Expired - Lifetime EP1248051B1 (fr) 2001-04-06 2001-04-06 Appareil chauffant

Country Status (3)

Country Link
EP (1) EP1248051B1 (fr)
AT (1) ATE330188T1 (fr)
DE (1) DE60120635D1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US881362A (en) 1906-01-29 1908-03-10 Albert W Van Rinsum Tank-heater.
US966147A (en) 1910-03-12 1910-08-02 Edgar B Wills Tank-heater.
US1268202A (en) 1917-04-06 1918-06-04 Jacob Haish Company Tank-heater.
US1468561A (en) 1920-08-07 1923-09-18 Hardy A Friend Tank heater
GB356494A (en) * 1930-09-17 1931-09-10 Gustav Lingner Improvements in or relating to gas-heated devices for heating liquids
US4455997A (en) 1981-07-13 1984-06-26 Snorkel Stove Co. Heating unit for hot tubs and/or spa units

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US881362A (en) 1906-01-29 1908-03-10 Albert W Van Rinsum Tank-heater.
US966147A (en) 1910-03-12 1910-08-02 Edgar B Wills Tank-heater.
US1268202A (en) 1917-04-06 1918-06-04 Jacob Haish Company Tank-heater.
US1468561A (en) 1920-08-07 1923-09-18 Hardy A Friend Tank heater
GB356494A (en) * 1930-09-17 1931-09-10 Gustav Lingner Improvements in or relating to gas-heated devices for heating liquids
US4455997A (en) 1981-07-13 1984-06-26 Snorkel Stove Co. Heating unit for hot tubs and/or spa units

Also Published As

Publication number Publication date
ATE330188T1 (de) 2006-07-15
DE60120635D1 (de) 2006-07-27
EP1248051B1 (fr) 2006-06-14

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