JPH0538687Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a coffee server, more specifically, a hot water storage tank is equipped with a heater and a thermostat to control it, and the hot water storage tank is supplied with water from a water supply tank. , relates to a coffee server in which hot water from a hot water storage tank is supplied onto coffee beans in accordance with this supply.

BACKGROUND ART Conventionally, this type of coffee server has been constructed as shown in FIG.

That is, a heater 12 is installed at the bottom of the hot water storage tank 11.
The heater 12 is turned on and off by a thermostat 13. A water supply tank 14 is arranged above the hot water storage tank 11, and this water supply tank 14 and the hot water storage tank 11
and is communicated with by a water supply pipe 15. This water supply pipe 15 extends to the inner lower part of the hot water storage tank 11, and a hot water supply pipe 16 is connected to the upper part of the hot water storage tank 11. A shower 17 is attached to the tip of the hot water supply pipe 16, and hot water is poured onto the coffee beans 18 from the shower 17. Note that 19 is an air vent pipe.

In such a configuration, when water is supplied to the water supply tank 14, the water supply pipe 15 is transferred from the water supply tank 14 to the water supply pipe 15.
Water flows into the lower part of the hot water storage tank 11 through
Therefore, hot water flows from the upper part of the hot water storage tank 11 through the hot water supply pipe 16 and from the shower 17 to the coffee beans 1.
It was poured on top of 8.

Problems that the invention aims to solve: However, while it is best to pour hot water as high as possible over coffee beans when extracting coffee, in conventional coffee servers, the temperature of the hot water in the hot water storage tank 11 is controlled at a high temperature. However, keeping the hot water in the hot water storage tank 11 boiling all the time causes a large energy loss, and because of the problem that the hot water in the hot water storage tank 11 evaporates quickly, it is inevitable to turn the heater 12 on at a temperature lower than the boiling temperature. I needed to turn it off. Furthermore, considering the on/off differential in the thermostat 13, it has been difficult to prevent the temperature of the hot water in the hot water storage tank 11 from becoming considerably lower than the boiling temperature.

Means for solving the problems This invention was devised in view of the problems,
The hot water storage tank is equipped with a heater and a thermostat to control the heater, and water is supplied to the hot water storage tank from a water supply tank, and with this supply, hot water from the hot water storage tank is supplied onto the coffee beans. In the coffee server, a thermostat is attached to the tip of an air vent connected to the upper part of the hot water storage tank, and a valve is interposed in the middle of the water supply pipe that supplies water from the water supply tank to the hot water storage tank. When brewing coffee, the heater is energized regardless of the thermostat, and the valve is opened by starting the thermostat attached to the air vent, and water flows from the water supply tank to the hot water storage tank. The apparatus is characterized in that it is configured such that hot water is supplied from the hot water storage tank to the coffee beans by this supply.

Effect In the coffee server according to the above configuration,
When brewing coffee, the heater is energized regardless of the thermostat that detects the temperature of the hot water in the hot water storage tank, and once the hot water in the hot water storage tank boils, the thermostat attached to the air vent starts. The valve in the middle of the water supply pipe that supplies water from the water supply tank to the hot water storage tank is opened, and hot water near the boiling point is always poured over the coffee beans.

Embodiment Next, an embodiment of the coffee server according to the present invention will be described based on the drawings.

Note that the same reference numerals are given to the same components as in the conventional example.

In FIG. 1, a heater 12 is attached to the lower part of the hot water storage tank 11, and normal on/off control of this heater 12 is performed by a thermostat 13 attached to the hot water storage tank 11, as in the conventional example. . Above the hot water storage tank 11 is a water supply tank 1.
4 is provided, and the water supply tank 14 and the hot water storage tank 11 are communicated with each other by a water supply pipe 15.
A solenoid valve 22 is interposed in the middle of this water supply pipe 15. This water supply pipe 15 is connected to the hot water storage tank 1
The hot water storage tank 11 has a larger diameter pipe inside the hot water storage tank 11. In addition, a hot water supply pipe 1 is installed at the top of the hot water storage tank 11.
A shower 17 is attached to the tip of the hot water supply pipe 16, and hot water is poured from the shower 17 onto coffee beans 18 housed in a coffee extraction case 23.
Further, an air vent pipe 19 is connected to the upper part of the hot water storage tank 11.
The other end of 9 is opened to the water supply tank 14 side. And water supply tank 1 of air bleed pipe 19
A thermostat 21 is attached near the opening on the fourth side. This thermostat 21 is for detecting the temperature of steam discharged from the air vent pipe 19 when hot water boils inside the hot water storage tank 11. In addition, a scale indicating the amount of water to be supplied is engraved on the side wall of the water tank 14 (not shown) to prevent water from flowing into the hot water tank 11 from the water tank 14 through the air vent pipe 19. There is.

In the coffee server configured as described above, when water is supplied to the water supply tank 14, the water flowing from the water supply tank 14 into the water supply pipe 15 is dammed at one end by the solenoid valve 22, and
It doesn't flow inside right away. When the water supply is completed, by pressing an extraction button (not shown) attached to the hot water storage tank 11, the heater 12 is forcibly energized regardless of the thermostat 13. After a certain period of time, the hot water in the hot water storage tank 11 begins to boil, and the steam flows into the air vent pipe 1.
It will be discharged through 9. This steam causes the temperature of the thermostat 21 to rise, and when it reaches a certain temperature, the thermostat 21 is activated. When the thermostat 21 operates,
The heater 12, which had been forcibly energized, is turned off, and at the same time, the solenoid valve 22 is turned on, and the water stored in the water tank 14 is transferred to the water supply pipe 15.
It flows into the lower part of the hot water storage tank 11 through the hot water storage tank 11. By supplying water from this water supply pipe 15,
The boiling water is pushed up to hot water pipe 1
6, and hot water is supplied from the shower 17 onto the coffee beans 18.

Next, the control circuit will be explained based on FIG.

When the water supply to the water tank 14 is completed and the extraction button is pressed, the switch 24 is turned on, the coil of the relay R1 is energized, the contact R1-1a is turned on, and the relay R1 is self-held. At the same time, contact R1
-2a is turned on, and the heater 12 is forcibly energized. When the hot water in the hot water storage tank 11 starts boiling after a certain period of time has passed, the thermostat 21 is turned on and the self-holding state of the relay R1 is released. Then, the contact R1-1a is turned off, and the heater 12 is turned off. At the same time, the solenoid valve 22
is turned on (open), water flows from the water supply tank 14 to the hot water storage tank 11, and by supplying water to the hot water storage tank 11, boiling water passes through the hot water pipe 16 from the shower 17 onto the coffee beans 18. It will be poured into. Under normal conditions, the heater 12 is controlled by a thermostat 13.

In another embodiment, a weight detection device or the like is attached to the lower part of the water tank 14.
If the electric signal to start coffee extraction is issued by detecting the water supply to 4, coffee extraction can be started automatically without pressing the extraction button, and the extraction button can be pressed. This will save you time and effort.

Effects of the invention As is clear from the above explanation, in the coffee server according to the invention, the hot water storage tank is equipped with a heater and a thermostat that controls the heater, and the hot water storage tank is supplied with water from the water supply tank. In the coffee server, the hot water from the hot water storage tank is supplied onto the coffee beans as the hot water is supplied, and a thermostat is installed at the tip of an air vent connected to the upper part of the hot water storage tank. A valve is interposed in the middle of a water supply pipe that supplies water from the water supply tank to the hot water storage tank, and when brewing coffee, the heater is energized regardless of the thermostat and is attached to the air vent part. When the thermostat is started, the valve is opened, and water is supplied from the water supply tank to the hot water storage tank, and as a result of this supply, hot water is supplied from the hot water storage tank to the coffee beans. Coffee can be extracted even with boiling water, making it easier to enjoy more delicious coffee and drinking hotter coffee.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view showing an embodiment of a coffee server according to the present invention, FIG. 2 is a view showing a control circuit, and FIG. 3 is a view corresponding to FIG. 1 showing a conventional example. 11... Hot water storage tank, 12... Heater, 13...
...Thermostat, 14...Water tank, 19...
...Air bleed pipe (air bleed part), 21...
Thermostat, 22... Solenoid valve (valve).

Claims (1)

[Scope of utility model registration request] The hot water tank is equipped with a heater and a thermostat to control it, and water is supplied to the hot water tank from the water supply tank, and along with this supply,
In the coffee server in which hot water from the hot water storage tank is supplied onto the coffee beans, a thermostat is attached to the tip of an air vent connected to the upper part of the hot water storage tank, and the hot water from the water supply tank is supplied to the coffee beans. A valve is interposed in the middle of the water supply pipe that supplies water to the tank, and when brewing coffee, the heater is energized regardless of the thermostat, and the thermostat attached to the air vent section is started. A coffee server characterized in that the valve is opened, water is supplied from the water supply tank to the hot water storage tank, and as a result of this supply, hot water is supplied from the hot water storage tank to the coffee beans.