JP6593723B1 - Electric coffee maker - Google Patents

Abstract

An object of the present invention is to not have sufficient steaming time and miscellaneous taste in the latter half of the drip to make a delicious coffee with a coffee drip. In order to achieve the task, the boiler needs to include a plurality of elements in order to effectively supply water and hot water by providing two flow paths, a hot water outlet for coffee drip and a hot water outlet for additional hot water. A boiler includes a heater and a temperature sensor, a water supply hole and two hot water supply holes, and an exhaust hole so that no pressure or negative pressure is generated in the boiler during water supply or hot water supply. Water supply and hot water supply can be performed effectively. The exhaust hole is a drip-type electric coffee maker configured to be connected to an exhaust pipe and led to an exhaust port provided in the outer shell of the container. [Selection] Figure 2

Description

  The present invention is a drip electric coffee maker for home use that can brew delicious coffee by controlling the amount of coffee drip and adding an additional hot water stroke.

  Figs. 6 and 7 show that using a commercially available paper filter dripper, about 12g of coffee grounds are drip for the first 1/3, the next 1/3, and the last 1/3. It is explanatory drawing which brewed 150cc of coffee.

  The first 1/3 and the next 1/3 coffee are very good in taste and aroma. However, the last third is a coffee that is not as delicious as it is as thin as black tea. Therefore, we will develop a drip-type electric coffee maker that can brew coffee in a way that does not drip the unsavory part of the second half of the drip.

Japanese Patent Application No. 2017-219503 The applicant has filed a patent for the basic invention of the present application.

  Water is supplied to the boiler for the amount of coffee that you want to brew and is held in the boiler. Use up all the hot water. The amount of coffee you want to brew is the amount of a cup of coffee.

  An additional hot water stroke is provided in which after dripping dark coffee with a sufficiently small amount of hot water for steaming time, only hot water can be poured into the coffee cup from the second hot water outlet, which was not available in a conventional electric coffee maker.

  The boiler is equipped with a volume, a heater and a temperature sensor that can hold the amount of water required for the amount of coffee that you want to brew, and has a water supply hole and two hot water supply holes, and an exhaust hole so that no pressure or negative pressure is generated in the boiler. Use the provided configuration.

  In order to solve the above-mentioned problems, the present invention has an electric pump arranged between a water tank and a boiler, and a boiler, a dripper and a coffee cup are arranged vertically from the upper side to the lower side so that hot water can easily fall naturally. The electromagnetic valve A disposed between the boiler and the dripper and the electromagnetic valve B disposed between the boiler and the coffee cup constitute two flow paths.

  By controlling the operation time of the electric pump, the amount of water required for the amount of coffee to be brewed can be supplied to the boiler, and when the solenoid valve A and the solenoid valve B are closed, the amount of water can be maintained and the water can be heated.

  In order to steam the boiled water, the solenoid valve A is first opened and the “open” time is controlled to supply the hot water required for steaming from the hot water inlet A to the dripper, and then the solenoid valve A is closed to the steaming process. enter.

  When the steaming time is over, the solenoid valve A opens again to supply hot water to the dripper and drip the coffee into the coffee cup. At this time, when the "drip" time of the solenoid valve A is controlled and the amount to be dripped reaches 30 to 70% of the amount of coffee to be brewed, it is closed and dark coffee is made.

  Next, by opening the solenoid valve B and controlling the "opening" time, the boiler water is supplied directly to the coffee cup from the hot water outlet B, and the amount of coffee to be brewed is brewed. Do not leave hot water in the boiler when the process is complete.

  The boiler is composed of a boiler container and a boiler container, and is provided with a heater and a temperature sensor. Further, a water supply hole is provided in the upper part of the boiler container, and a hot water supply hole A and a hot water supply hole B are provided in the bottom surface of the boiler container. . Further, an exhaust hole is provided so that no pressure or negative pressure is generated inside the boiler. The exhaust hole is connected to the exhaust pipe and led to an exhaust port provided in the outer shell of the coffee maker.

  Thus, it is a drip-type electric coffee maker provided with the control circuit which controls the structure of a container, the operation timing of the electric pump, the solenoid valve A, and the solenoid valve B, and the operation time.

  Since the drip-type electric coffee maker of the present invention has the boiler, the dripper, and the coffee cup arranged vertically, the operation timing and operation time of the solenoid valve arranged in the flow path for coffee drip and the flow path for additional hot water By simply controlling the water, the natural drip of the hot water enables coffee drip and additional hot water.

  The boiler of the drip type electric coffee maker according to the present invention includes a heater and a temperature sensor, and has a water supply hole A at the top and a hot water supply hole A and a water supply hole B at the bottom. Further, by providing an exhaust hole, no pressure or negative pressure is generated in the boiler, and water supply by an electric pump and hot water supply by an electromagnetic valve are effectively achieved.

  By controlling the operation timing and operation time of the boiler components and the electric pump and the two solenoid valves, a method that does not drip unsavory parts and a method of adding hot water becomes possible, and delicious coffee can be brewed. I was able to achieve an electric coffee maker.

  Hereinafter, the structure of the container which is an Example of this invention is demonstrated. FIG. 1 is an external view of an electric coffee maker according to the present invention. As operation switches, a power switch 1, a density switch 2, an espresso switch 3, a start switch 4, and a setting display LCD 5 are provided. The density switch 2 can select the drip amount within a range of 30 to 70% of the coffee amount desired to be brewed.

  There is a detachable water tank 6 at the rear of the vessel, and a coffee cup 7 for receiving coffee can be placed at the front lower part. The cover 8 can be opened and closed, and the dripper 9 can be set by opening the cover 8. The dripper 9 includes a dripper container 29 and a paper filter 30.

  FIG. 2 shows the basic components arranged to achieve the effect of the electric coffee maker of the present invention. The water tank 6 and the boiler 10 are connected by a water supply pipe 12 via an electric pump 11. The boiler 10, the dripper 9 and the coffee cup 7 are vertically arranged from the upper side to the lower side to allow the hot water to fall naturally.

  Further, an electromagnetic valve A13 is arranged between the boiler 10 and the dripper 9, and an electromagnetic valve B14 is arranged between the boiler 10 and the coffee cup 7. Thus, the hot water of the boiler 10 is the structure which can be poured into the coffee cup 7 through two flow paths.

  3, 4, and 5 show the configuration of the boiler 10. The boiler 10 includes a boiler container upper 15, a boiler container lower 16, a heater 17, and a temperature sensor 18. A water supply hole 19 is provided in the boiler container upper 15, and a hot water supply hole A 20 and a hot water supply hole B 22 are provided in the boiler container lower 16. Further, an exhaust hole 24 is provided at a position higher than the water level of the amount of water supplied.

  The purpose of the exhaust hole 24 is to make it possible to supply the amount of water necessary for the amount of coffee to be brewed without easily generating an internal pressure when water is supplied, and no steam pressure is generated in the boiler 10 when boiling water. This is because when the hot water is further supplied to the coffee cup 7, the boiler 10 is sucked so as not to be negative pressure.

  The exhaust hole 24 is connected to an exhaust port 25 provided in the outer shell of the container to discharge steam and steam pressure generated by boiling water through the exhaust pipe 26, and steam and water droplets are contained in the container. The components are not adversely affected.

  An electromagnetic valve A13 is arranged between the boiler 10 and the dripper 9 and connected by a hot water supply pipe A27, and an electromagnetic valve B14 is arranged between the boiler 10 and the coffee cup 7 and connected by a hot water supply pipe B28. By controlling the operation timing and operation time of the electromagnetic valve A13 and the electromagnetic valve B14, hot water can be supplied to the dripper 9 for coffee drip, and only hot water can be directly supplied to the coffee cup 7 for additional hot water.

  The process of brewing the coffee of the present invention will be described below. When the power switch 1 is turned on and the concentration switch 2 is pressed and then the start switch 4 is pressed, the electric pump 11 is operated to supply water necessary for the amount of coffee to be fed to the boiler 10. The operating time is programmed.

  When the amount of water necessary for the amount of coffee to be brewed into the boiler 10 is supplied, the electric pump 11 stops and maintains the amount of water, and the heater 17 installed in the boiler 10 is turned on to start the water heating process. When the hot water in the boiler 10 reaches 90 to 100 ° C., the heater 17 is turned off. Until this stroke, the solenoid valve A13 and the solenoid valve B14 are in the “closed” state.

  When the hot water temperature of 90 to 100 ° C. is reached and the heater 17 is turned off, the electromagnetic valve A13 is first opened, and hot water is poured into the dripper 9 from the hot water supply port A21. The amount of hot water poured first is about 20 to 50 cc, which is sufficient to steam the coffee powder in the dripper 9, and then the solenoid valve A13 is "closed" and the dripper 9 enters the steaming time.

  The steaming time is about 1 to 2 minutes, and then the solenoid valve A13 is "opened" again, a predetermined amount of hot water is poured into the dripper 9, drip is started and coffee is poured into the coffee cup 7. At this time, the planned amount of hot water is about 30 to 70% of the amount of coffee to be brewed.

  After the scheduled amount of hot water has been poured into the dripper 9, the solenoid valve A13 is "closed", the solenoid valve B14 is "opened", and additional hot water is supplied to supply only hot water directly from the hot water outlet B23 to the coffee cup 7. Brew coffee as much as you want. The solenoid valve B14 is “open” until the hot water in the boiler 10 runs out, and when the hot water in the boiler 10 runs out, it becomes “closed” and the process of brewing coffee is completed.

  When the espresso switch 3 is pressed before the start switch 4 is pressed, the additional hot water stroke is not performed, so that the amount of additional hot water is not supplied to the boiler 10. The coffee without the hot water is a strong espresso coffee.

  Further, when the product is actually commercialized, it is conceivable to add a program of the control circuit 31 so as to drip 100% of the coffee amount desired to be brewed or to brew the coffee without the steaming process.

  In this way, the process of brewing coffee is a drip electric coffee maker in which the operation timing and operation time of the electric pump 11, the electromagnetic valve A13, and the electromagnetic valve B14 are controlled by the program of the control circuit 31.

  It is an external view of the electric coffee maker of the present invention.   1 shows basic components of the present invention.   It is structural drawing of the boiler of this invention. (Front view)   It is structural drawing of the boiler of this invention. (Longitudinal section)   It is structural drawing of the boiler of this invention. (Cross section)   It is explanatory drawing which can brew coffee with a commercially available dripper.   When a cup of coffee is brewed by a conventional drip method, it is a diagram comparing the first 1/3, the next 1/3, and the last 1/3 of the drip.

1 Power Switch 2 Concentration Switch 3 Espresso Switch 4 Start Switch 5 Setting Display LCD 6 Water Tank 7 Coffee Cup 8 Cover 9 Dripper 10 Boiler (Boiler Container)
11 Electric pump 12 Water supply pipe 13 Solenoid valve A 14 Solenoid valve B
15 Boiler container upper 16 Boiler container lower 17 Heater 18 Temperature sensor 19 Water supply hole 20 Hot water supply hole A
21 Hot water outlet A 22 Hot water hole B
23 Hot-water supply port B 24 Exhaust hole 25 Exhaust port 26 Exhaust pipe 27 Hot-water supply pipe A 28 Hot-water supply pipe B
29 Dripper container 30 Paper filter 31 Control circuit 32 Check valve 33 Commercial dripper 34 Commercial paper filter 35 Coffee powder

Claims (2)

An electric pump arranged between the water tank and the boiler, and a solenoid valve A arranged between the boiler and the dripper in which the boiler, the dripper and the coffee cup are arranged vertically from the upper side to the lower side for easy natural fall of hot water. And having a solenoid valve B arranged between the boiler and the coffee cup, controlling the operation time of the electric pump to supply and hold the boiler with water necessary for the amount of coffee to be brewed. In order to steam the next boiled hot water, the solenoid valve A is first opened to control the "open" time, and then the hot water required for steaming is supplied from the hot water inlet A to the dripper, and then the solenoid valve A is turned on. When the steaming process is closed and then the steaming time is over, the solenoid valve A opens again and hot water is supplied to the dripper to drip the coffee into the coffee cup. When the “drip” time of the solenoid valve A is controlled and the amount to be dripped reaches 30 to 70% of the coffee amount to be brewed, it is closed to brew dark coffee, then the solenoid valve B is opened and the “open” time The boiler has a built-in heater and is suspended in the hollow of the boiler container so that the amount of coffee can be brewed directly from the hot water outlet B to the coffee cup by controlling the temperature of the boiler. Lower the hot water supply hole A and hot water supply hole B on the bottom of the boiler container. The capacity of the boiler is the volume necessary for the amount of coffee to be brewed in one coffee cup. When the coffee brewing process is completed, the remaining hot water remains. An exhaust hole for ventilation is provided at the top of the boiler container so that no pressure is generated in the boiler when supplying water to the boiler or when boiling water. The boiler prevents the boiler from becoming negative pressure when the hot water is supplied by natural fall, and the exhaust hole is connected to the exhaust pipe and led to the exhaust port provided in the outer shell of the vessel A drip-type electric coffee maker for home use. 2. In the electric coffee maker having the component structure according to claim 1, before the step of drip 30 to 70% of the coffee amount desired to be brewed by opening the solenoid valve A after the steaming process is completed. Open the solenoid valve B at the same time, or open the solenoid valve B during the drip stroke to supply hot water directly to the coffee cup, and control the “open” time of the solenoid valve A and solenoid valve B to make the amount of coffee you want to brew. A drip-type electric coffee maker for home use characterized by brewing.

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