초록 ▼

An apparatus for deep-frying food, including a window (22) of a transparent material which takes up at least a portion of a cover (5; 105; 205) and which extends at least partially at an angle or vertically. A vapor discharge channel (6) communicates with the inner space (3) of the pan. A cooling su

An apparatus for deep-frying food, including a window (22) of a transparent material which takes up at least a portion of a cover (5; 105; 205) and which extends at least partially at an angle or vertically. A vapor discharge channel (6) communicates with the inner space (3) of the pan. A cooling surface (7) is provided for cooling vapor, which cooling surface communicates with the inner space (3) via the vapor discharge channel (6). A storage reservoir (13) is used for storing condensate that has precipitated on the cooling surface (7), and a collecting gutter (21; 121; 221) serves for collecting condensate that has precipitated on the window (22). The collecting gutter (21; 121; 221) extends along a bottom end of the window (22) and includes a drain (30; 130), via which drain the collecting gutter (21; 121; 221) communicates also with the vapor discharge channel (6) for draining condensate to the vapor discharge channel (6). Furthermore, a provision for signalling deep-frying activity in response to heating by hot vapor is described.

대표청구항 ▼

An apparatus for deep-frying food, including a window (22) of a transparent material which takes up at least a portion of a cover (5; 105; 205) and which extends at least partially at an angle or vertically. A vapor discharge channel (6) communicates with the inner space (3) of the pan. A cooling su

An apparatus for deep-frying food, including a window (22) of a transparent material which takes up at least a portion of a cover (5; 105; 205) and which extends at least partially at an angle or vertically. A vapor discharge channel (6) communicates with the inner space (3) of the pan. A cooling surface (7) is provided for cooling vapor, which cooling surface communicates with the inner space (3) via the vapor discharge channel (6). A storage reservoir (13) is used for storing condensate that has precipitated on the cooling surface (7), and a collecting gutter (21; 121; 221) serves for collecting condensate that has precipitated on the window (22). The collecting gutter (21; 121; 221) extends along a bottom end of the window (22) and includes a drain (30; 130), via which drain the collecting gutter (21; 121; 221) communicates also with the vapor discharge channel (6) for draining condensate to the vapor discharge channel (6). Furthermore, a provision for signalling deep-frying activity in response to heating by hot vapor is described. g α measured void fraction a of the multiphase flow, a liquid phase density rhol,a liquid phase velocity ul,and a cross-sectional area Apipeof a conduit wherein said void fraction is measured. 4. The method as recited in claim 3, wherein said step for determining a mass flow rate mlof the liquid phase comprises an act of calculating said mass flow rate mlof the liquid phase using an equation: ml=(1-α)·rhol·ul·Apipe. 5. The method as recited in claim 1, further comprising the step of retrievably storing, at the computer, results of at least one of steps (a) through (h). 6. The method as recited in claim 1, further comprising the step of transmitting results of at least one of steps (a) through (h) to a location remote from the computer. 7. The method as recited in claim 1, wherein said step for determining a density rhogwof the gas phase of the multiphase flow comprises an act of calculating said density rhogwof the gas phase of the multiphase flow using a reference gas density rhog,a pressure P of the multiphase flow at the entrance of the differential pressure flow meter, and a temperature T of the multiphase flow at the entrance of the differential pressure flow meter. 8. The method as recited in claim 7, wherein said reference gas density rhogcomprises a density of natural gas at standard temperature and pressure. 9. The method as recited in claim 1, wherein said step for determining a normalized gas phase mass flow rate mgm comprises an act of calculating said normalized gas phase mass flow rate mgm using experimentally determined constants A, B, and C, a measured pressure differential ΔP3across the contraction, and a measured pressure differential ΔP2across the extended throat. 10. The method as recited in claim 1, wherein said step for determining an actual gas phase mass flow rate mgcomprises an act of calculating said actual gas phase mass flow rate mgusing said normalized gas mass flow rate mgm, an area Atof the extended throat, a contraction ratio β, and said density rhogwof the gas phase. 11. The method as recited in claim 1, wherein said step for determining a gas phase velocity ugin the extended throat comprises an act of calculating said gas phase velocity ugin the extended throat using said actual gas phase mass flow rate mg,said reference gas density rhog,and said area Atof the extended throat. 12. The method as recited in claim 1, wherein said step for determining a pressure drop ΔPgl3experienced by the gas phase in accelerating the liquid phase between the first and third pressure measuring points comprises an act of calculating said pressure drop ΔPgl3using a measured pressure differential ΔP3across the contraction, said gas phase density rhogw,said gas phase velocity ugin the extended throat, and a contraction ratio β. 13. The method as recited in claim 1, wherein said step for determining a liquid phase velocity ulin the extended throat comprises an act of estimating said liquid phase velocity ulin the extended throat using a measured pressure differential ΔP3across the contraction, said pressure drop ΔPgl3,a density rholof the liquid phase, a wall friction constant gcfw, and a contraction ratio β. 14. The method as recited in claim 1, wherein said step for determining friction f between the liquid phase and the interior wall comprises an act of calculating said friction f between the interior wall and the liquid phase using said wall friction constant gcfw, a density rholof the liquid phase, and said liquid phase velocity ulin the extended throat. 15. The method as recited in claim 1, wherein said step