JP2566922Y2 - Fixed discharge water heater - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for dispensing fixed-quantity water, such as coffee and tea.

[0002]

2. Description of the Related Art A fixed-discharge water heater for discharging hot water for a predetermined number of people is used for a beverage extractor such as coffee or tea. In this beverage extractor, a fixed-discharge water heater and a beverage extraction device are installed on a base, and a discharge port of the hot water of the water heater faces an opening of a filter upper portion of the beverage extraction device, and a predetermined amount of the water is extracted. Hot water is poured into the inside of the filter from the discharge port to extract a beverage such as coffee into the internal container of the beverage extracting device.

[0003] In the beverage extractor as described above, a constant amount of hot water can be constantly discharged to a constant amount of coffee powder or a raw material for beverage extraction such as black tea leaves stored in a filter of the beverage extraction device. This is one of the key points to keep the taste of the extracted beverage constant.

In order to extract a certain number of green teas, hot water may be discharged from the above-mentioned fixed-discharge water heater to a teapot or the like. Even in such a case, a certain amount of tea is discharged to a certain amount of tea leaves. Being able to do so is the key to adding delicious tea.

However, when the pump is driven to discharge the hot water after the hot water is boiled by the fixed discharge water heater, the dissolved gas contained in the hot water and the gas adhering to the inside of the pump are bubbled, and the bubbles are trapped in the pump. An inhalation phenomenon, a so-called foaming phenomenon, may occur.

[0006] When the foaming phenomenon occurs, the discharge amount of the pump becomes smaller than the standard discharge amount, and there is a problem that the taste of the extracted beverage changes.

For this reason, conventionally, there has been adopted a method in which hot water is left as it is for several minutes after boiling, waits for the internal gas to evaporate spontaneously, and then discharges the hot water.

[0008]

[Problems to be Solved by the Invention] However, if the boiling water is left as it is, the temperature of the water decreases, and as a result, the temperature of the extracted beverage also decreases, resulting in insufficient extraction or a decrease in taste. There is a disadvantage that. In addition, there is also a disadvantage that the time required for beverage extraction is lengthened by the amount of time the hot water is left.

[0009] Therefore, an object of the present invention is to keep the discharge amount of hot water constant, to keep the taste of the extracted beverage constant, and to shorten the time required for extracting the beverage, regardless of the initial water temperature.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a fixed-rate discharge water heater having a temperature sensor provided in a water heater and a motor control device for a pump. Storage means for the initial water temperature at the start of water heating detected by the temperature sensor,
Correction means for correcting the discharge amount according to the initial temperature is provided , and the correction means, when the initial water temperature is equal to or lower than a set temperature,
Dispensing time is longer than standard time by a predetermined time
It is a configuration that makes it possible to be.

[0011]

When an instruction to start water heating is input, the temperature at the time when the temperature is detected by the temperature sensor is stored in the storage means of the control device as an initial temperature. When a discharge command is received after boiling and the motor is driven, the drive time of the motor is corrected with respect to the standard time in accordance with the initial temperature to make the discharge amount uniform.

[0012]

FIG. 1 shows an embodiment of a beverage extractor according to the present invention, which is a coffee extractor having a fixed-discharge water heater 2 and a beverage extractor 3 arranged on a base 1 side by side.

A discharge arm 4 is provided at the upper end of the fixed-rate discharge water heater 2 so as to be rotatable in a horizontal plane, offset toward the beverage extracting device 3. One end of the discharge pipe 5 inserted therein is connected to the discharge port 6 at the tip of the discharge arm 4,
The other end passes through the outer periphery of the inner container 7 and is connected to the discharge side of a pump 8 installed below the inner container 7. A suction pipe 9 is provided between the suction side of the pump 8 and the bottom of the internal container 7. A heater 11 is mounted on the lower surface of the inner container 7. In addition, a temperature sensor 10 is provided at an appropriate position on the lower surface of the inner container 7.
Is attached.

The pump 8 is driven by a motor 12, and the motor 12 is controlled by a control device 14 including a microcomputer installed on a control board 13.

Further, the beverage extracting device 3 comprises an air pot 1
In the upper part of the inner container of No. 5, a filter 16 also serving as a plug is provided. A filter pack of coffee powder is stored inside the filter 16. A hole facing the discharge port 6 is provided at an upper portion of the filter 16, and coffee water is extracted from the filter pack by hot water discharged into the filter 16 from the hole, and the coffee liquid is discharged to the lower inner container. To be dropped.

To pour the extracted coffee liquid into the cup, after operating the lever 17 and pressing the push button 18, the coffee liquid is discharged from the discharge port 19 by the action of the air pump.

The control device of the fixed-quantity water heater 2 has a built-in program as shown in the flowchart of FIG.

That is, immediately after entering the auto mode, the initial water temperature is read and stored in the storage means. Next, heating of the heater is started, and when the boiling temperature is reached, if the initial water temperature is 90 ° C. or lower, the boiling is continued for another 3 minutes in order to stabilize the hot water temperature. In the case above, the boiling is continued for another 90 seconds after the boiling. Then, after stopping the heating of the heater, a waiting time of 3 minutes is given to stabilize the ejection.

After that, the operation shifts to discharge.
Discharge is performed intermittently in six times (N = 26). The numerical value of 26 times is a discharge amount (standard discharge amount) when there is no foaming phenomenon. The reason why the hot water is discharged intermittently is to extract a coffee powder while swelling the coffee powder so that good coffee can be obtained. When the number of times of the above-mentioned intermittent extraction reaches 26 times, when the initial water temperature is 30 ° C. or less , the foaming phenomenon occurs as in the case of heating from cold water.
Since the decrease in the discharge amount due to the discharge cannot be ignored , the correction discharge is performed for a predetermined time to complete the extraction. If the initial water temperature exceeds 30 ° C., the extraction is completed and a complete buzzer sounds.

The time for the correction discharge is 30 seconds when the initial water temperature is 30.
℃ Ri by the foam hair phenomenon at the time of the following, less than the standard discharge amount
Time der sufficient to complement the Kunar discharge rate is, the time is
It is set in advance.

In order to set the corrected discharge amount more accurately, the initial water temperature must be, for example, 30 ° C. or less, 31 ° C. or more and 90 ° C.
Hereinafter, the correction time may be finely set in accordance with each step by dividing into three steps of 90 ° C. or higher, or dividing into two steps at 50 ° C. as a boundary.

[0022]

[Effect of the Invention] As described above, in the present invention, the discharge time is corrected with respect to the standard time according to the initial water temperature at the time of boiling water. The amount of hot water with respect to the extracted raw materials such as coffee powder and black tea can be kept constant, whereby the taste of the extracted beverage can be kept constant.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment.

FIG. 2 is a flowchart of the above.

[Explanation of symbols]

 Reference Signs List 1 base 2 fixed-quantity discharge water heater 3 beverage extraction device 4 discharge arm 5 discharge pipe 6 discharge port 7 internal container 8 pump 9 suction pipe 11 heater 12 motor 13 control board 14 control device 15 air pot 16 filter 17 lever 18 push button 19 Discharge port

Claims (1)

(57) [Scope of request for utility model registration] 1. A fixed-discharge water heater having a temperature sensor provided in a water heater and a motor control device for a pump, wherein the motor control device has a storage means for storing an initial water temperature at the start of water heating detected by the temperature sensor. Providing a correction means for correcting the discharge amount according to the initial temperature ,
The above-mentioned correction means discharges when the initial water temperature is lower than the set temperature.
Make the time longer than the standard time by the predetermined time.
A fixed-rate discharge water heater characterized in that: