Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23D—BURNERS
  • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
  • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
  • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
  • F23D14/06—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
  • F24C3/00—Stoves or ranges for gaseous fuels
  • F24C3/08—Arrangement or mounting of burners
  • F24C3/085—Arrangement or mounting of burners on ranges
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23D—BURNERS
  • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
  • F23D2900/14—Special features of gas burners
  • F23D2900/14062—Special features of gas burners for cooking ranges having multiple flame rings

Definitions

• This invention relates to a substantially transparent cap for a heating appliance particularly though not solely for use as a gas burner cooktop.
• US 5,009,393 discloses a gas turn down valve with a relatively gradual control characteristic which provides a greater level of control especially at lower outputs compared to traditional gas valves.
• an electromechanical actuator is used to rotate the gas valve in order to achieve fine levels of control across the entire range of output.
• the present invention consists in gas burner comprising: a body portion including a gas inlet and an open inner cavity in fluid communication with said gas inlet, a substantially transparent cover means adapted to engage or attach to said body portion and thereby substantially cover said inner cavity and, a plurality of gas outlets substantially adjacent the boundary formed between said cover means and said body portion and in fluid communication with said inner cavity.
• Figure 1 is a cut-away view of the gas burner according to the preferred embodiment of the present invention.
• Figure 2 is a plan view of the body portion according to the preferred embodiment of the present invention.
• Figure 3 is a perspective view of the substantially transparent glass burner cap according to the preferred embodiment of the present invention.
• Figure 4 is a plan view of the gas burner at a low flame setting according to the preferred embodiment of the present invention.
• Figure 5 is a plan view of the gas burner on a high flame setting according to the preferred embodiment of the present invention.
• Figure 6 is a side view of the wok-style burner
• Figure 7 is a plan view of the wok-style burner. BEST MODE FOR CARRYING OUT THE INVENTION
• the gas burner is formed of a body portion 100 including a gas inlet 102 and an internal cavity 104 such that the gas flows from the gas supply 106 into the internal cavity 104.
• the top of the internal cavity 104 is closed off with a substantially transparent glass cap 108 which attaches overtop of and overhangs the body portion 100.
• the gas then flows from the internal cavity out through outlet channels 112 formed on the top face 114 of the body portion 100 to the outlet ports 116 where the gas is ignited and heats the cooking vessel (not shown).
• FIG. 3 see the burner cap 108 in more detail.
• the cap 108 may optionally include a central co le 150 designed to fit down the internal cavity (104, Figure 1) of the body portion (100, Figure 1). On the underside is a flat annular face 152 designed to sit firmly upon the upper face (114, Figure 1) of the body portion.
• the cap 108 also includes an outer flange 156, which overhangs the body portion (100, Figure 1). The outer flange 156 is designed to diffuse the flames before they contact the heating vessel.
• the glass cap itself is composed of a typical ceramic type glass. Such glass is designed with a significant resistance to thermal shock and high contact temperature, such as expected when exposed to a gas fuelled flame. A Borosilicate based glass would be particularly appropriate.
• the present invention is shown in use in Figures 4 to 5.
• the actual flame 200 is only seen by virtue of the cap 202 being transparent.
• the flames 204 extent past the outer flange 206, and are evenly distributed around the circumference. By virtue of the flames being visible at low flame more accurate control and greater safety is possible over prior art burners.
• a further improvement would be to mould designs or text onto the underside of the glass cap. This would allow the top face to be easily cleaned. The manufacturers name or other designs would then be visible from above.
• the main body 210 is substantially composed as described in the preceeding embodiments, having outlets 212 on the outer periphery 214 of a raised portion 211 inset from the edge of the main body 210.
• the main body includes a covered centre section 216 extending approximately 2/3 the radius of the outer periphery 214 to form an inner periphery 218 to the raised portion.
• a further set of outlet ports 220 are included on the inner periphery to provide flames towards the centre of the wok to provide more even heating and to ensure that the centre of the wok is sufficiently hot as is often desirable when cooking with a wok.
• the trivet plate 222 which supports the wok (not shown) above the flames.
• the trivet 222 supports the wok about an annular path 224 which allow the wok (not shown) to be readily moved and removed, ensuring adequate flame contact to the underside of the wok and minimal flame contact on the trivet.
• the substantially transparent glass cap 226 as described in the previous embodiments is in this case embodied in an annular ring with tapered portions (or rounded edges) at its inner 228 and outer 230 peripheries. Again the cap 226 is composed of a similar material and at low flame ensures full visibility of the flame. At high flame as shown in Figure 6, the flames can be seen both inwardly and outwardly of the raised portion 211. It will be readily apparent to one skilled in the art the advantages to the system described above and as defined in the appended claims.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Gas Burners (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=19927706

Family Applications (1)

Country Status (7)

Families Citing this family (13)

Family Cites Families (19)

• 2000
  • 2000-01-06 NZ NZ502170A patent/NZ502170A/xx not_active IP Right Cessation
  • 2000-12-22 WO PCT/NZ2000/000263 patent/WO2001050065A1/en not_active Application Discontinuation
  • 2000-12-22 EP EP00989048A patent/EP1244889A1/en not_active Withdrawn
  • 2000-12-22 US US10/148,706 patent/US20030101980A1/en not_active Abandoned
  • 2000-12-22 CA CA002393099A patent/CA2393099A1/en not_active Abandoned
  • 2000-12-22 AU AU25602/01A patent/AU758887B2/en not_active Ceased
  • 2000-12-22 JP JP2001549967A patent/JP2003519351A/ja active Pending

Non-Patent Citations (1)

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