| 摘要 |
In a pour-in, instant brewing type coffee maker, gravity flow of water, from a receiving tray bottom orifice to an electric resistance heated block of a unit heating the water as it passes to a brewing funnel discharging hot brewed coffee, is controlled by a float-varied orifice structure, and the tray overlies the block for tray water heating by water vapor latent heat; thus eliminating need of a large block mass or excessive heater wattage to provide requisite hot water temperature in an acceptable cycle time, and permitting a simple molded plastic housing design. Baffling in a block water flow top cavity conduces to efficient heat transfer and to reduction of steaming and of attendant noise.
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