Gas oven
阅读：969发布：2023-12-27
专利汇可以提供Gas oven专利检索，专利查询，专利分析的服务。并且A gas cooking oven in which there is a single top burner assembly having a forced air supply for both primary and secondary combustion air, with the latter directed at the combustion zone or zones to minimize excess air requirement. The burner assembly includes baffling adjustable relative to the burner ports so that the flame issuing therefrom can be selectively exposed to or concealed from the interior of the oven cavity, with such concealment the condition for baking and the flame exposed for broiling and high temperature heat cleaning of the oven. The flue products are exhausted from the oven through a heat exchanger, such as a rotating regenerator drum, for preheating of the incoming air, either substantially directly from the top exterior region of the oven or from the bottom exterior after such products flow through a wrapper spaced about the outer periphery of the oven liner to heat the walls thereof. The exhaust is from the top region during broiling and from such bottom region during baking and heat cleaning.，下面是Gas oven专利的具体信息内容。
1. A domestic oven comprising liner means having side, rear, top, and bottom walls forming a cooking cavity, gas-fired burner means in the upper portion of the oven for both broiling in said cavity and for baking therein, means for supplying fuel gas and combustion air, both under pressure, to said burner means, and blower-operated exhaust means for the oven having first and second conditions of operative adjustment, the exhaust means in such first condition causing the hot gases produced by the burner means to circulate about side and bottom walls of the liner means for baking operation of the oven and in the second condition withdrawing such gases substantially directly from the burner means for broiling.
2. A domestic oven as set forth in claim 1, which further comprises air supply duct means for conveying relatively cool ambient air to the burner means as the combustion air, and exhaust duct means in said exhaust means through which the hot gases from the oven are circulated, with said air supply and exhaust duct means being disposed in heat exchange relationship.
3. A domestic oven as set forth in claim 1, which further comprises baffle means in association with said burner means, and means for relatively adjusting the burner means and baffle means selectively to shield or expose the outlet section of the burner means with respect to the main interior of the cavity where the foods to be cooked are placed.
4. A domestic oven as set forth in claim 3, wherein the relative adjustment of the burner and baffle means is separate from the adjustment of the exhaust means, with the burner means normally shielded in the first condition of the exhaust means for baking and exposed in the second exhaust means condition for broiling in the oven.
5. A domestic oven as set forth in claim 4, which further comprises an inlet duct section through which relatively cool ambient air is conveyed to the burner means as the combustion air, and a hot gas outlet duct section in the exhaust means in heat exchange relationship with said inlet duct section.
6. A domestic oven as set forth in claim 5, wherein said outlet duct section is within said inlet duct section.
7. In a gas oven comprising a cooking cavity, burner means having an outlet section at an upper portion of said cavity, means for supplying fuel gas under pressure to said burner means, means for supplying air under pressure to the burner means to form a combustible mixture with the fuel gas, baffle means associated with the burner means, and means for relatively adjusting the burner and baffle means to provide respectively bake and broil conditions of adjustment thereof, the baffle means in such bake condition being close to and at least partially below the outlet section of the burner means for shielding food articles and the like placed therebeneath in the cavity from direct exposure to the output of the burner means, with the baffle means being relatively withdrawn in the broil condition to provide such exposure for broiling food articles supported below the same.
8. A gas oven as set forth in claim 7, wherein the baffle means is movable, and movement thereof effects the relative adjustment between said bake and broil conditions.
9. A gas oven as set forth in claim 7, wherein said burner means is the only source of heat for the oven.
10. In combination with a gas oven having a cooking cavity, gas-firEd burner means in the oven comprising a housing having an inlet and an outlet, means for supplying fuel gas under pressure to said housing through the inlet thereof, means for supplying primary air to said housing inlet for mixing with said fuel gas within said housing, blower means, and separate conduit means independent of said primary air supply means for confining secondary air delivered under pressure from the outlet of said blower means and discharging the same directly to the immediate region of the burner outlet and thus substantially directly to the combustion zone of the burner means.
11. The combination set forth in claim 10, wherein the outlet of the burner means is elongated, and the conduit means is constructed and arranged to deliver the pressurized secondary air substantially uniformly over the extent of said outlet.
12. A gas oven comprising an inner liner forming a single cooking cavity in which both baking and broiling operations are to be performed, outer wrapper means extending in spaced relation over a major portion of the periphery of the liner and forming therewith an exterior circulation chamber, gas burner means located in an upper portion of the cooking cavity, means providing communication between the interior of the liner above the burner means and the exterior circulation chamber, means for circulating hot gases produced by the burner means through said circulation chamber and thus over the enclosed peripheral portion of the liner to heat the same for baking in the oven, and means for alternatively withdrawing the hot gases substantially directly from the upper portion of the cavity for broiling without flow through the circulation chamber.
13. A gas oven as set forth in claim 12, which further comprises means for supplying gas under pressure to the burner means, and forced air supply means therefor.
14. A gas oven as set forth in claim 12, which further comprises baffle means associated with the burner means, and means for relatively adjusting the burner and baffle means selectively to shield food in the cavity from the burner output in baking and to expose the food thereto for broiling.
15. A gas oven as set forth in claim 12, which further comprises exhaust duct means to receive the hot gases from the circulation chamber or as alternatively withdrawn from the upper portion of the cavity, and inlet duct means through which combustion air is supplied to the burner means in heat exchange relationship with said exhaust duct means.
16. A gas oven as set forth in claim 12, which further comprises means for supplying fuel gas under pressure to the burner means, means for supplying pressurized primary air to the burner means, and air conduit means for delivering secondary air under pressure directly to the combustion zone of the burner means.
17. A gas oven comprising an inner liner forming a cooking cavity, outer wrapper means extending in spaced relation over a major portion of the periphery of the liner and forming therewith an exterior circulation chamber, gas burner means in the upper portion of the oven for broiling in said cavity and for baking therein, means for circulating hot gases produced by the burner means through said circulation chamber and thus over the enclosed peripheral portion of the inner liner to heat the same for baking in the oven, and means for alternatively withdrawing the hot gases substantially directly from the burner means and exhausting the same from the oven for broiling without the flow through the exterior circulation chamber.
18. A partially aerated burner system, comprising a gas burner having a port section at which combustion occurs in operation of the burner, means for supplying gaseous fuel to the interior of the burner for issue at said port section, means for establishing a supply of air for the burner under pressure, means for directing a predetermined portion of the pressurized air from such supply to the interior of the burner for mixing therein and issue with the gaseous fuel as a combuStible mixture to be burned at said port section, and conduit means independent of said directing means for confining the remaining pressurized air from such supply and discharging the same as secondary air immediately proximate to the port section of the burner.
19. A burner system as set forth in claim 18, wherein the port section of the burner is elongated and the discharge of the secondary air is coextensive therewith.
20. A burner system as set forth in claim 19, wherein the means for confining and discharging the secondary air includes a conduit spaced from the burner and having an outlet section adjacent the port section of the burner.
21. A burner system as set forth in claim 20, wherein the discharge of the secondary air from said conduit is at an angle relative to the direction of issue of the combustible mixture from the burner port section.
22. A burner system as set forth in claim 19, wherein the discharge of the secondary air is in the same general direction as the issue of the combustible mixture from the burner port section.
23. A burner system as set forth in claim 22, wherein the means for confining and discharging the secondary air includes enclosure means in spaced relation to the burner and forming a chamber therewith having an outlet contiguous to the burner port section.
24. A burner system as set forth in claim 23, wherein the enclosure means has top and bottom chamber defining portions spaced from the burner and outlets above and below the port section of the burner.
25. A self-cleaning gas oven comprising an outer supporting cabinet structure enclosing a box-like oven liner and a front-opening access door which define an oven cooking cavity, an outer wrapper surrounding the oven liner and spaced outwardly therefrom to form heating channels, gas burner means for generating flue gases which pass through the heating channels and raise the temperature of the walls of the oven liner for both cooking of food placed therein and the pyrolytic cleaning of the food soils from the inner surfaces of the walls forming the oven cooking cavity, a counterflow heat exchanger mounted behind the back wall of the outer wrapper with a flue gas inlet at the bottom thereof and a cooling air inlet at the top thereof, the heat exchanger also having a flue gas outlet at the top thereof for exhausting to the atmosphere, and a cooling air outlet to the burner thereof in communication with the gas burner means as a source of heated combustion air.
26. A self-cleaning gas oven comprising an outer supporting cabinet enclosing a box-like oven liner and a front-opening access door which define an oven cooking cavity, an outer wrapper surrounding the oven liner and spaced outwardly therefrom to form heating channels therebetween, gas burner means for generating flue gases which pass through the heating channels and raise the temperature of the walls forming the oven cooking cavity for both the cooking of food placed therein and for the pyrolytic cleaning of the food soils from the inner surfaces of the oven cavity, vertically arranged stationary heat exchange means located outside the outer wrapper and having a flue gas inlet at the bottom thereof and an ambient air inlet at the top thereof, the flue gas and ambient air flowing in opposite directions to each other, there being a flue gas exhaust at the top of the heat exchange means and an ambient air exhaust at the bottom of the heat exchange means, the flue gas exhaust having an outlet to the atmosphere, and conduit means providing communication between the burner means and the ambient air exhaust, whereby the ambient air becomes heated in the heat exchange means and passes through the conduit means to the gas burner means as pre-heated combustion air.
27. A self-cleaning gas cooking oven comprising an oven body supporting a box-like oven liner and a front-opening access door which define an oven cooking cavity, a gas burner, heating channels extending about opposite side walls of the oven liner and commUnicating with the burner so that flue gases from the burner may pass through the channels thereby heating the walls forming the oven cooking cavity, a vertically arranged stationary heat exchanger, a flue gas inlet at the bottom of the heat exchanger, a flue gas outlet at the top of the heat exchanger, an ambient air inlet at the top of the heat exchanger and an ambient air outlet at the bottom of the heat exchanger said ambient air outlet supplying heated air to the burner as pre-heated combustion air, whereby the flue gases flowing through the heat exchanger give up much of their heat to the ambient air and thereby exhaust to the atmosphere at a temperature in the order of magnitude of less than one-half of the temperature of the flue gases entering the flue gas inlet of the heat exchanger.
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