JPH0679580B2 - Coffee kettle - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a coffee brewer for extracting coffee liquid by dropping boiling water into coffee powder.

2. Description of the Related Art A conventional coffee brewer of this type is disclosed in
As shown in Japanese Patent No. 931, the structure was as shown in FIG. That is, it has a storage tank 2 around which a heater 1 is wound, a pouring pipe 3 for supplying the hot water in the storage tank 2 to the outside, and a supply lever 4 for controlling the supply of the hot water. The hot water was supplied by pushing down to open the hot water supply pipe 3. Reference numeral 5 is a chamber for storing coffee powder 6 therein.
7 is a bottle.

Problems to be Solved by the Invention With such a conventional configuration, the hot water storage temperature is not constant,
In particular, when the amount of hot water stored is large, the temperature of the hot water becomes low, and when boiling hot water is required such as in a coffee brewer, a heat insulating means for the storage tank 2 and high power are required. Generally, this type of coffee brewer always produces hot water in the storage tank 2 and stores the hot water therein, and the amount of water constantly changes due to evaporation or water supply during this time. Therefore, when supplying the required amount of hot water when necessary, it is necessary to rely on the user's intuition of the supply lever 4, which is very inconvenient.

The present invention solves such a problem, and an object of the present invention is to provide a simple coffee brewer capable of extracting a coffee liquid by rapidly supplying a predetermined amount of boiling water at all times. It is a thing.

Means for Solving the Problems In order to solve the above problems, the present invention heats a first heater for heating a hot water storage tank, a first thermostat connected to the first heater, and a closed container. A second heater, a second thermostat connected to the second heater, a first water pipe connecting the hot water storage tank and a closed container, and a first switching valve provided on the way to the first water pipe. A second water pipe having one end continuously connected to the closed container and the other end continuously connected to the extractor; a second switching valve provided in the middle of the second water pipe; and the first and second A switching device for communicating any one of the switching valves of the above, the second thermostat operates above the boiling temperature of water in the sealed container to control the energization of the second heater, and the first thermostat. Thermostat, boiling water in hot water storage tank It is configured to operate below the temperature to control the energization of the first heater.

Operation According to the above configuration, since the hot water preheated in the hot water storage tank is supplied to the closed container by the switching device, the hot water in the closed container can be heated to the boiling point in an extremely short time, and the hot water storage Water in the tank should be below boiling temperature, for example 60
Controlled by the first thermostat at ~ 70 ° C,
There is little reduction in the amount of water due to evaporation or the like, and consumption of electric power is also reduced.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 to 5, reference numeral 11 denotes a main body, which has a base 13 on which a coffee cup 12 is placed. A hot water storage tank 14 has a first heater 15 wound around the outer circumference thereof, a first thermostat 16 for detecting water temperature provided on the bottom surface, and a mounting step portion 18 of a lid 17 formed on the upper edge. ing. Reference numeral 19 denotes a closed container provided below the hot water storage tank 14, and the closed container 19 is connected to the hot water storage tank 14 by a first water pipe 29. On the lower surface of the closed container 19, a second heater 21
Also, a second thermostat 22 for detecting water temperature is provided.

Reference numeral 23 denotes a cup-shaped extractor. The extractor 23 accommodates a disc-shaped filter member 24, has an extraction port 25 at the center of the lower surface, and further has an extractor lid 26 attached to the inner periphery of the upper edge. The screw portion 27 is formed. 28 indicates coffee grounds. Reference numeral 29 denotes a second water pipe connecting the closed container 19 and the extractor 23 in series. One end of the second water pipe 29 faces the bottom surface of the closed container 19 and the other end penetrates the side wall of the main body 11. It faces the inside of the extractor 23. Reference numeral 30 is a discharge port that opens upward. 31 is a packing. Reference numeral 32 is a first switching valve provided in the middle of the first water pipe 20, and 33 is a second switching valve provided in the middle of the second water pipe 29. The first switching valve 32 opens and closes the flow path between the hot water storage tank 14 and the closed container 19 by the valve rod 34 sliding on the inner surface, and the second switching valve 33 slides on the inner surface of the valve rod 35. Thus, the flow path between the closed container 19 and the extractor 23 is opened and closed.

37 is a switching device, and this switching device 37 has locking members 40 and 41 slidably fitted in a substantially frame 39 fixed to a support plate 38, as shown in FIG. 42,
The first shaft 43 has a first shaft 43 and a second shaft 44 that are mounted by inserting the support plate 38 and the frame 39 in a direction perpendicular to the lock member 42.
The second shaft 44 is provided with protrusions 45 and 46, and the first push button 47 and the second push button are provided at the tip.
48 are provided. 49 and 50 are fixed contacts connected to a power supply terminal (not shown). The fixed contacts 49 and 50 are provided on the support plate 38. 51 and 52 are the heaters 15
The movable side contact is connected to the first and second shafts 43 and 44.

The tip end of the first shaft 43 in the above-mentioned switching device 37 faces the valve rod 34, and the tip end of the second shaft 44 is
It is arranged at a position facing the valve rod 35. In FIG. 5, 53 is a thermal fuse, 54, 55 are heaters 15,
An energizing lamp for 21 and 56, 56 'indicate compression springs.

Next, the operation of the above configuration will be described. First, by putting water in the hot water storage tank 14 and then pressing the first push button 47, the first switching valve 32 is opened via the valve rod 34, and the hot water storage tank 14 and the closed container 19 communicate with each other. , The contacts 49 and 51 are closed, and the first heater 15 is energized. At this time, the protrusion 45 of the first shaft 43 engages with the locking portion 40 of the lock member 42 and is locked.

Further, the hot water in the hot water storage tank 14 is heated until the first thermostat 16 operates and the circuit of the first heater 15 is cut off. Here, the first thermostat 16 is set so that the hot water in the hot water storage tank 14 operates at 60 to 70 ° C.
Next, extractor 23 is provided with filter member 24 and coffee cup
After setting the required amount of coffee powder 29 of 12 and mounting it on the side surface of the main body 11, by pressing the second push button 48, the second switching valve 33 is opened and the extractor is extracted from the closed container 19. A flow path to the 23 side is formed. At this time, the protrusion of the second shaft 44
46 is locked by the locking portion 41 of the lock member 42. On the other hand, the first shaft 43 is returned by the compression spring 56 to open the contacts 49, 51 and close one of the contacts 50, 52. This switches to the circuit of the heater 21. The unboiled water in the closed container 19 is then heated until the second thermostat 22 is activated. In this case, since the flow path to the hot water storage tank 14 is closed, the hot water in the closed container 19 boils in a short time and is supplied to the extractor 23. When the extraction is completed, the first push button 47 is pressed again to return to the initial state. Alternatively, reset all push buttons 47 and 48 to select which heater 1
It is possible to stop energizing 5,21.

Effects of the Invention According to the present invention, as is clear from the description of the above embodiments,
Since the water in the hot water storage tank is always preheated to 60 to 70 ° C and this preheated hot water is supplied to the closed container by the switching device, it is possible to reach the boiling point in a very short time and supply it to the extractor, Also, the amount of hot water supplied to the extractor is a fixed amount determined by the volume of the closed container, so it is a predetermined amount of high temperature whenever you want to drink, so you do not have to wait for a predetermined amount of high temperature coffee liquid whenever you want to drink In addition, if the hot water storage tank is preheated at 60 to 70 ° C, a sufficient effect can be obtained, so a separate heat insulating member is not required and the electricity bill is small, so it has a simple structure. It has various excellent effects.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a coffee brewer showing an embodiment of the present invention, FIG. 2 is a side sectional view of the coffee brewer, and FIG. 3 is an exploded view of a part of the coffee brewer. 4 shown in perspective view
FIG. 5 is a sectional view of the switching device of the coffee brewer, FIG. 5 is a circuit diagram of the coffee brewer, and FIG. 6 is a side view of a conventional coffee brewer. 14 …… hot water storage tank, 15 …… first heater, 16 …… first
Thermostat, 19 ... closed container, 20 ... first water pipe,
21 ... Second heater, 22 ... Second thermostat,
29 ...... second water pipe, 32 ... first switching valve, 33 ... second switching valve, 37 ... switching device.

Claims (1)

[Claims] 1. A first heater for heating a hot water storage tank,
A first thermostat connected to the first heater, a second heater for heating the closed container, a second thermostat connected to the second heater, and the hot water storage tank and the closed container connected in series. One water pipe, a first switching valve provided on the way to the first water pipe, a second water pipe having one end connected to the closed container and the other end connected to an extractor, and the second water pipe A second switching valve provided in the middle of
And a switching device for communicating either of the first and second switching valves, wherein the second thermostat operates above the boiling temperature of water in the closed container to control the energization of the second heater. The coffee brewer configured to perform the energization control of the first heater by operating below the boiling temperature of water in the hot water storage tank.