JP2672998B2 - Electric warming pot - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an electric insulation pot with a coffee extraction function.

(Prior Art) As an electric heat-insulating pot for boiling water, a tank is provided in the main body, a heater is attached to this tank, and this heater boiles and keeps hot water in the tank. It is known that an electric pump is operated so that the electric pump is sequentially discharged from the tap hole.

And recently, an electric drip-type coffee extractor is appropriately placed below the tap opening, and hot water flowing out from the tap is introduced into this coffee extractor to enable extraction of coffee. It is provided.

In such an electric warming pot with a coffee extraction function, the hot water discharge type can be selectively set to the manual mode and the automatic mode by operating the mode changeover switch. While pressing the switch with your fingertip, hot water continuously flows out from the hot water outlet at a large flow rate, and when you release your fingertip from the hot water outlet switch, the hot water stops flowing out, so you can quickly obtain the desired amount of hot water. Obtainable. On the other hand, when the automatic mode is set, the electric pump is driven by the control of the microcomputer by the trigger signal when the hot water switch is pressed, and the hot water is squeezed to a flow rate suitable for extraction of coffee by this drive. It automatically flows out of the tap hole for a predetermined time, so that the coffee can be properly extracted by the drip method.

(Problems to be solved by the invention) By the way, in the setting state of the manual mode, when the touch switch is accidentally touched and pressed almost instantaneously, the electric pump is driven instantaneously. However, there is a slight time lag between the driving of the electric pump and the actual flow of hot water, so there is no danger of hot water inadvertently flowing out of the hot water outlet. In the automatic mode setting state, if you accidentally touch the hot water switch and press it almost instantaneously, the automatic mode function will work immediately and the hot water will be automatically discharged from the hot water spout for a predetermined time. There is a risk of spillage and accidental burns.

The present invention has been made in view of such a point,
It is an object of the invention to provide a safe electric heat retaining pot in which the function of the automatic mode does not work in a normal state and the careless automatic outflow of hot water does not occur.

[Structure of the Invention] (Means for Solving the Problem) In order to achieve such an object, the present invention causes hot water boiled in a tank to flow out from a hot water outlet by the operation of an electric pump based on the operation of a hot water switch. In addition, the hot water discharge type can be selectively set to the manual mode and the automatic mode.When the manual mode is set, the electric pump is driven only while the hot water discharge switch is operated, and hot water is discharged. When the automatic mode is set, the electric pump is driven by the microcomputer control by the trigger signal by the operation of the hot water switch when the automatic mode is set, and the hot water whose flow rate is narrower than that when the manual mode is set is automatically set for a predetermined time. When the hot water is discharged from the hot water outlet, the hot water is automatically set to the manual mode after the automatic mode is set and the hot water is completely discharged by the automatic mode. It is obtained by the provided automatic switching means for switching.

(Operation) Normally, the manual mode has priority, so when tapping the hot water in the manual mode, press the hot water switch with your fingertip in this state. While the pressing continues in response to this operation, the electric pump is driven and the hot water in the tank continuously flows out from the hot water outlet at a large flow rate.

On the other hand, when extracting coffee, the hot water discharge mode is set to the automatic mode, and the hot water discharge switch is pressed with the fingertip in this state. At this time, since the hot water mode is the automatic mode, the electric pump is driven by the one-touch operation of the hot water switch under the control of the microcomputer, and the hot water whose flow rate is throttled so as to be suitable for the extraction of coffee from the hot water outlet is generated. It will be leaked automatically. Immediately after the outflow of hot water in the automatic mode is completed, the hot water discharge mode is automatically switched from the automatic mode to the manual mode by the control of the microcomputer, and this state is maintained.

In this way, the hot water discharge mode is always kept in the manual mode during normal operation, so that hot water will not automatically flow out even if the hot water discharge switch is accidentally touched and pressed almost instantaneously.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

2 to 5 show the structure of the electric insulation pot,
Reference numeral 1 is a cylindrical main body, a tank 2 is housed in the main body 1, and a heater 3 is attached to the outer periphery of the lower portion of the tank 2. An electric pump 4 connected to the bottom surface of the tank 2 and a control unit 5 for controlling the electric pump 4 and the heater 3 are provided on the lower surface side of the tank 2. Electric pump 4
A hot water channel 6 is drawn out of the main body 1 and rises along the tank 2, extends from the upper front surface of the main body 1 to the outside, and further bends downward substantially in a V-shape to form a tip. The section is a tap 7. A check valve 8 and a flow rate detector 9 are provided in the middle of the hot water passage 6.

An upper lid 10 is rotatably attached to the upper end of the main body 1, and the opening at the upper end of the tank 2 is opened and closed by the upper lid 10. Further, a cover 11 is provided on the upper end of the main body 1. The cover 11 covers the part of the molten metal channel 6 extending to the front side of the main body 1.

The lower end of the main body 1 is provided with a heat retaining tray 15 which can be pulled out on the front side thereof. In FIG. 2 to FIG. 4, this heat retaining tray 15 is pulled out to the front side of the main body 1 and the heat retaining tray 15 A coffee bottle 16 is placed on the tray 15, and a driper 17 as a coffee extractor is set on the coffee bottle 16 so as to face the tap hole 7.

On the upper surface of the cover 11, a push button type hot water switch 20, a mode changeover switch 21, an extraction amount changeover switch 22, a reboil switch 23, a timer switch 24, a manual mode lamp 25 including an LED and an automatic mode lamp. 26 are arranged respectively. A microcomputer 28 is incorporated in the control unit 5. The hot water discharge switch 20 and the mode changeover switch 21 are provided at the input terminals of the microcomputer 28, and the manual mode lamp is provided at the output terminals.
The electric pump 4 is connected to each other through the automatic mode lamp 25, the automatic mode lamp 26, and the drive circuit 27. When the mode change switch 21 is pressed once, the hot water discharge mode is changed from the manual mode to the automatic mode, and when it is pressed once more, the mode is changed from the automatic mode to the manual mode.
Each time the button 21 is pressed, the mode is switched in sequence, which allows any mode to be selected and set. Then, the manual mode lamp 25 is turned on when the manual mode is set, and the automatic mode lamp 26 is turned on when the automatic mode is set. Further, when the hot water switch 20 is pressed when the manual mode is set, the electric pump 4 is driven at the same time as the hot water switch 20 is operated, and the hot water in the tank 2 flows out from the hot water outlet 7 at a flow rate of 2000 to 3000 cc / min, for example. The drive pump 4 is stopped in response to the release of, and the hot water stops flowing out. When the hot water discharge switch 20 is pressed when the automatic mode is set, the voltage applied to the electric pump 4 is controlled through the microcomputer 28 and the drive circuit 27, and the hot water in the tank 2 is suitable for extraction of coffee from the hot water outlet 7. It is supposed to be leaked. After the outflow of hot water in this automatic mode is completed, the hot water discharge mode is automatically switched from the automatic mode to the manual mode by the control of the microcomputer 28, and in normal times, this manual mode is preferentially maintained. It has become.

In addition, on the front surface of the cover 11, a boiling indicator lamp 30 that lights up when the boiling water in the tank 2 is boiling, a warming indicator lamp 31 that lights when the temperature of the boiling water is kept warm, a timer display lamp 32 that lights when the timer is running, and the boiling water in the tank 2 Water supply indicator lamp 33, which lights up when the water consumption has decreased below a certain level to encourage water supply, and a plurality of extraction amount indicator lamps 34 which indicate the number of coffee extraction cups.
… Is arranged.

When using the electric heat-insulating pot configured as described above, the upper lid 10 is opened to store water in the tank 2. This water is heated by the heater 3 and boiled, and after this boiling, it is kept warm at a high temperature of about 96 ° C.

In the normal mode, the manual mode is prioritized. Therefore, when tapping water in the manual mode, the tap switch 20 is pressed with the fingertip in this state. In response to this operation, while the pressing continues, the electric pump 4 is driven and the tank 2
A large amount of hot water inside the outlet 7 (2000-3000cc / mi
It flows out continuously in n).

On the other hand, when extracting coffee, as shown in FIGS. 2 to 4, pull out the heat-retaining tray 15, place the coffee bottle 16 on the heat-retaining tray 15, and place it on the coffee bottle 16. Set dripper 17 on. Then, the mode changeover switch 21 is pressed to change the hot water discharge mode from the manual mode to the automatic mode. In addition, the extraction amount selector switch
Operate 22 to set the extraction amount of coffee. At this time, when the extraction amount changeover switch 22 is pressed once, the extraction amount is set to 2 cups, and the extraction amount display lamp 34 of "2" lights up,
When pressed twice, the extraction amount is set to 3 cups, and the extraction amount display lamp 34 of "3" lights up, and thereafter, each time the extraction amount changeover switch 22 is pressed, the extraction amount setting is increased. The amount of coffee to be extracted can be arbitrarily selected to a desired amount from 2 to 5 cups.

Thereafter, the tap switch 20 is pressed with a fingertip. At this time, since the tapping mode is the automatic mode, the electric pump 4 is driven by the one-touch operation of the tapping switch 20 by the control of the microcomputer 28 and the drive circuit 27, and the tapping port 7 automatically operates as follows. Hot water flows out. That is, first, hot water squeezed in a small amount so that the hot water permeates the coffee powder in the dripper 17 is dropped, and then the dropping is stopped for several seconds, during which the coffee powder is steamed, and the dripper is steamed after the steaming. Hot water intermittently flows into the inside of 17 at a flow rate reduced to almost half that in the manual mode. The outflow is stopped after the amount of hot water according to the selected number of cups has flowed out. This makes it possible to obtain a desired amount of coffee with a good taste. Immediately after the outflow of hot water in the automatic mode is completed, the hot water discharge mode is automatically switched from the automatic mode to the manual mode by the control of the microcomputer 28, and this state is maintained.

In this way, the hot water mode is always kept in the manual mode during normal operation, so even if you accidentally touch the hot water switch and press it almost instantaneously, the hot water will not automatically flow out. You can prevent the risk of getting burned.

[Effects of the Invention] As described above, according to the present invention, the manual mode is preferentially retained in the normal state, and therefore, the tap switch may be accidentally touched and pressed almost instantaneously. However, hot water does not inadvertently flow out from the hot water outlet, and therefore the risk of burns can be prevented and safety can be improved.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a flow chart, FIG. 2 is a configuration diagram of an electric insulation pot, FIG. 3 is a plan view of the same, FIG. 4 is a partial front view of the same, and FIG. Is also an enlarged plan view of a part, and FIG. 6 is an electric circuit diagram. 2 ... Tank, 4 ... Electric pump, 7 ... Outlet, 20 ...
… Hot water switch, 21 …… Mode selector switch, 28 ……
Microcomputer.

Claims (1)

(57) [Claims] 1. Hot water boiling in a tank is caused to flow out of a hot water outlet by the operation of an electric pump based on the operation of a hot water switch, and the hot water discharge mode is selectively set to a manual mode and an automatic mode. When setting the manual mode, the electric pump is driven only while the hot water switch is operated, and hot water continuously flows out from the hot water outlet.When the automatic mode is set, the trigger signal generated by operating the hot water switch is used. In the case where the electric pump is driven by the control of the microcomputer and the hot water whose flow rate is narrower than when set in the manual mode automatically flows out from the hot water outlet for a predetermined time,
An electric warming pot characterized by making an automatic switching means that automatically switches the hot water discharge mode to the manual mode after the automatic mode is set and the outflow of hot water by the automatic mode is completed.