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    • 42. 发明专利
    • COOKING DEVICE
    • JPH11137428A
    • 1999-05-25
    • JP32223997
    • 1997-11-07
    • SANYO ELECTRIC CO
    • KOBAYASHI MASAHIRO
    • A47J27/16A47J27/00A47J27/17
    • PROBLEM TO BE SOLVED: To improve food take-out work efficiency and automate cooking to filling by forming a food take-out opening in the bottom of a kettle and opening and closing the food take-out opening by an opening and closing means in a cooker having a kettle for cooking food. SOLUTION: A cooking device installed in a kitchen of a hospital or the like is provided with a kettle 2 which is a steam heating type jacket oven adapted to heat-cook a soup with steam. The kettle 2 is formed by a stainless- made inner oven 22 and an outer oven 23 which are opened to the above, and heat steam is supplied to a jacket space 24 between the inner and outer ovens 22, 23 from a heat steam supply source through a steam filling pipe 29. In this case, a food take-out opening 50 is formed in the bottom of the inner oven 22, and a lead-out pipe 39 is connected to the food take-out opening 50. A take- out valve 41 as an opening and closing means is connected to the lead-out pipe 39, and opened and closed by a driving part 59 for moving up and down a built-in valve element with compressed air.
    • 46. 发明专利
    • REFRIGERANT PIPING WITH INTERNAL SURFACE GROOVE
    • JPH0926280A
    • 1997-01-28
    • JP20046095
    • 1995-07-12
    • SANYO ELECTRIC CO
    • ISHIKAWA ATSUYUMIKOBAYASHI MASAHIROAKUTSU MASANORIKAWANABE TAKASHI
    • F28F1/40F25B39/00
    • PROBLEM TO BE SOLVED: To improve heat transfer characteristics by forming many grooves in an internal surface in the direction of the flow of a refrigerant, the widths of which have several values. SOLUTION: In the internal surface of a straight pipe 26A constituting a refrigerant piping 26, the number of grooves 31..., 32... is, e.g. 60 in total are formed. Herein, the bottom width B of the groove 31 is set to be 0.33mm for example, and the bottom width (e) of the groove 32 is set to be 0.48mm for example wider than the former. Both grooves 31, 32 are alternately formed. A mixed refrigerant flows spirally with the aid of a capillary phenomenon in the grooves 31, 32 adapted to the physical properties of each refrigerant on the side of an internal wall in the refrigerant piping 26, and hereby the flow of a specific refrigerant is prevented from staying. A high viscosity R134a mainly flows in the wider groove 32 while R32, R125 flow in the narrower groove 31. Accordingly, flow resistance of the R134a is reduced owing to the capillary phenomenon to reduce pressure drop whereby the mixed refrigerant flows smoothly also along the upper part in the refrigerant piping 26 to improve the heat transfer characteristics.