JP2019076678A - Electric coffee maker - Google Patents

Abstract

[Problem] In order to brew delicious coffee using coffee drip, it is necessary to have sufficient steaming time and to avoid adding unpleasant tastes in the latter half of the drip. Conventional coffee makers cannot control the water supply amount, hot water supply amount, or hot water supply time, so the steaming time is insufficient, and the drip time cannot be controlled, resulting in coffee with an unpleasant flavor that is not delicious. [Solution] In order to solve this problem, an electric pump and a solenoid valve are provided, and by controlling the activation/stopping of the electric pump and solenoid valve, sufficient steaming can be achieved and strong coffee can be brewed. can be Furthermore, this electric coffee maker is equipped with two separate hot water inlets, one for dripping coffee and the other for directly feeding hot water into the cup, making it possible to brew coffee without dripping any unpleasant taste. [Selection diagram] Figure 2

Description

  The present invention is a general household electric coffee maker that can make delicious coffee.

  When you normally drink 1 cup of coffee, set a special paper filter in a commercial dripper as shown in FIG. 4 and put about 12 g of coffee powder. In order to make a delicious coffee, it is important to pour enough hot water to make the coffee powder totally wet and to have enough steaming time.

  After steaming, the hot water was poured to about 150 cc of a cup of coffee to make coffee. However, there is a way to make more delicious coffee than this way of making.

  Figure 5 uses the commercial dripper in Figure 4 and puts about 12g of coffee powder, drips the first 1/3, drips the next 1/3 and drips the last 1/3, totaling about 150cc I made coffee.

  The first 1/3 and the second 1/3 coffee is very good in color and smell. However, the last one-third is a thin, tea-like, irresistible coffee that is not delicious. Therefore, we will develop an electric coffee maker that can make coffee in a way that does not drip the last third and can make more delicious coffee.

  Conventional electric coffee makers do not control the amount of hot water supply and the time of hot water supply, so they could not take enough steaming time to make delicious coffee.

  In addition, conventional electric coffee makers have had a hot water outlet that makes it possible for the drip point to drip into the last half of the drip.

  The amount of hot water supply and hot water supply time can be controlled to make delicious coffee, and the steaming time can be secured sufficiently. Make it possible to drip thick coffee with a small amount of hot water by taking enough steaming time.

  Furthermore, two hot water supply ports for coffee drips and a hot water supply port capable of adding only hot water, which was not available in conventional electric coffee makers, to a coffee cup are added.

  In order to solve the above problems, the present invention comprises an electric pump for supplying water from a water tank to a boiler that performs water boiling. The electric pump controls the operating time to supply water to the boiler for the amount of coffee that it is desired to brew and perform boiling.

  Two hot water supply ports are provided: hot water supply from the boiler to the dripper and hot water supply from the boiler to the coffee cup directly. One solenoid valve controls the amount of hot water supplied to the dripper, and the other solenoid valve controls the amount of hot water supplied directly to the coffee cup.

  Here, the boiler, the solenoid valve, the dripper and the coffee cup are arranged substantially vertically so that the hot water naturally flows out when the solenoid valve is opened.

  The electric pump for water supply can control the amount of water supplied to the boiler by controlling the operation time. Since the solenoid valve for hot water supply can control the start and stop of hot water supply by controlling the "open / close" time, the amount of hot water supply can be controlled.

  Therefore, it is possible to supply hot water from the hot water outlet A to the dripper in an amount that the coffee powder in the dripper is totally wet at first, and to close the solenoid valve A during steaming so that sufficient steaming time can be taken. .

  After steaming, the solenoid valve A is opened again to supply water to the dripper to drip coffee. At this time, when the dripping amount reaches 30 to 70% for one cup, the solenoid valve A is closed to stop the hot water supply. At this time, the dripped coffee takes a sufficient steaming time and is dripped, so a very thick coffee can be produced.

  Next, the solenoid valve B can be opened to add the shortfall of hot water directly to the coffee cup. The shortage of hot water is about 70 to 30% of one cup.

  Examples of the present invention will be described below. FIG. 1 is an external view of the electric coffee maker of the present invention. As an operation switch, a power switch 1, a 1 cup switch 2, a 2 cup switch 3, an espresso switch 4, and a start switch 5 are provided.

  There is a removable water tank 6 at the rear of the machine, and a cup for one person 7 or a cup for two people 19 for receiving dripped coffee can be placed at the lower front. The cover 8 can be opened and closed, and the cover 8 can be opened and the dripper 9 can be set.

  FIG. 2 is a basic component configured inside the machine 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 pipe via an electric pump 11.

  When the start switch 5 is pressed after the power switch 1 is turned on and the 1 cup switch 2 is pressed, the electric pump 11 operates to operate the electric pump 11 so that the water quantity of one cup is supplied to the boiler 10 Has been programmed. When the 2 cup switch 3 is pressed, the amount of water for 2 cups is programmed to be supplied to the boiler 10.

  When the planned amount of water is supplied to the boiler 10, the electric pump 11 is stopped, and the heater 12 installed inside the boiler 10 is turned on to start the water boiling process. When the hot water in the boiler 10 reaches 90 to 100 ° C., the heater 12 is turned off. The solenoid valve A14 and the solenoid valve B15 are in the "closed" state until the stroke here.

  When the temperature of the hot water reaches 90 to 100 ° C. and the heater 12 is turned off, the solenoid valve A14 is first opened, and hot water is poured into the dripper 9 from the hot water supply port A16. 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, after which the solenoid valve A14 is "closed" and the dripper 9 enters the steaming time.

  The steaming time is about 1 to 2 minutes, and then the solenoid valve A14 is opened again to pour a predetermined amount of hot water into the dripper 9 and start dripping. Be poured into. The planned amount of water is determined depending on whether 1 cup switch 2 or 2 cup switch 3 is pressed.

  The amount of hot water scheduled at this time is about 30 to 70% of the capacity of one cup or two cups respectively, and after the amount of hot water scheduled is poured into the dripper 9, the solenoid valve A14 is closed and the solenoid valve B15 The hot water is directly poured from the hot water supply port B17 into the cup 7 for one person or the cup 19 for two persons.

  The solenoid valve B15 is "open" until the hot water in the boiler 10 is exhausted, and when the hot water in the boiler 10 is exhausted, the electromagnetic valve B15 is "closed" to end the process of making coffee. Such a coffee-making process is carried out by controlling the operation time of the electric pump 11 and the "open / close" time of the solenoid valve A and the solenoid valve B by the program of the control circuit 18.

  FIG. 3 shows a dripper 9 used in the electric coffee maker of the present invention. The dripper 9 is composed of two molded parts and a paper filter 22. The paper filter 22 can utilize the kitchen paper marketed.

  The paper filter 22 using kitchen paper can easily maintain the amount of hot water of steaming and is most suitable for the steaming effect.

  When the paper filter 22 is placed and fitted between the forming cylinder A 20 and the forming cylinder B 21, the paper filter 22 is formed into a hemisphere and becomes the dripper 9 along the semispherically formed grid at the lower part of the forming cylinder A 20. The dripper 9 is removable by opening the cover 8 on the front of the machine.

  Espresso coffee is a very thick coffee, but if you press espresso switch 4 after pressing 1 cup switch 2 or 2 cup switch 3 and start switch 5 is pressed, hot water will not be added and you can make thick coffee .

  In this way, it is possible to drip a thick coffee for a sufficient steaming time, and when the cup is filled with hot water in an amount equivalent to one cup to make the coffee, the same thickness as the coffee roasted by the conventional method It is an electric coffee maker that can make coffee.

  It is an external view of the present invention.   1 shows the main components of the present invention.   1 shows the configuration of a dripper used in the electric coffee maker of the present invention.   It is explanatory drawing which makes coffee with a commercial dripper.   When 1 cup of coffee is brewed by the conventional drip method, it is the figure divided into the first 1/3 of the drip, the next 1/3, and the last 1/3, and it compares.

1 power switch 2 1 cup switch 3 2 cup switch 4 espresso switch 5 start switch 6 water tank 7 cup for one person (coffee cup) 8 cover 9 dripper 10 boiler 11 electric pump 12 heater 13 check valve 14 solenoid valve A
15 Solenoid valve B 16 Hot water supply port A
17 hot water supply port B 18 control circuit 19 cup for two persons 20 forming cylinder A
21 forming cylinder B 22 paper filter 23 commercial dripper 24 dedicated paper filter 25 coffee powder

Claims (3)

  The electric pump is disposed between the water tank and the boiler, and the boiler, the dripper and the coffee cup are vertically arranged, and the solenoid valve is disposed between the boiler and the dripper, and the operation time of the electric pump is To supply the required amount of water to the boiler by controlling, the hot water boiled in the boiler is steamed from the hot water supply port A to the dripper by opening the solenoid valve A and controlling the "open" time to perform the steaming first The necessary amount of hot water is supplied and the solenoid valve A is closed to enter the steaming process. During the steaming time, the solenoid valve A is closed. When the steaming time is over, the solenoid valve A is opened again to feed hot water to the dripper for coffee. The amount of coffee dripping into a coffee cup is 30-70% of a cup and the coffee is thick, this coffee drip stroke is electrically powered Pump is an electric coffee maker provided with a control circuit for the control of the "open" time of the operation time and the solenoid valve.   The electric coffee according to claim 1, wherein the hot water of the boiler can be supplied directly to the coffee cup by controlling the hot water supply start and stop of the electromagnetic valve B by providing the second electromagnetic valve B and the second hot water supply port B. It is a manufacturer.   The electric coffee maker according to claim 1, wherein the paper filter is sandwiched between the forming cylinder A and the forming cylinder B, and a removable dripper capable of containing coffee powder can be used.

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