JP3724489B2 - Coffee cooker - Google Patents

Description

  The present invention relates to a coffee kettle that extracts coffee liquid by supplying hot water from a hot water generator to coffee powder.

  Conventionally, in order to extract delicious coffee with so-called richness, the whole coffee powder is expanded once with hot water, steaming the coffee powder, making it easy to extract the high-quality ingredients of the coffee, and then intermittently supplying moderate hot water It is known that extracting coffee liquor is good. Inexpensive coffee pots having such a steaming effect function and intermittent hot water supply of hot water are known in Japanese Patent Laid-Open Nos. 58-143722 and 6-284971. The coffee extractor described in this publication has a configuration in which the main body includes a hot water storage tank that intermittently supplies hot water to the coffee extraction chamber by a siphon phenomenon.

  However, in the conventional configuration, when the extraction is completed, water may remain in the hot water storage tank. In order to solve the problem, coffee is formed at the bottom of the hot water storage tank as known in Japanese Utility Model Publication No. 59-73232. Although the installation of a valve device that can be opened after the extraction of the coffee is devised, there is a problem that the configuration of the parts becomes complicated and it becomes difficult to attach and detach the coffee extraction unit.

  The present invention solves the above-described conventional problems, can remove the residual water in the hot water storage tank after extraction with an inexpensive and simple configuration, and performs intermittent hot water supply to a stable coffee extraction chamber. The purpose is to extract delicious coffee.

  In order to solve the above-mentioned conventional problems, the coffee kettle of the present invention divides a hot water storage tank that intermittently supplies hot water into the coffee extraction chamber by a siphon phenomenon into a hot water storage tank bottom and a hot water storage tank container, and the hot water storage An elastic member is interposed between the bottom of the tank and the hot water storage tank container so as to be detachably attached to the main body.

  Thereby, the sealability of the hot water storage tank bottom part and hot water storage tank container part which can be divided can be improved, and the remaining water in the hot water storage tank can be easily removed after coffee extraction is completed.

  As described above, according to the first aspect of the present invention, the hot water storage tank container portion having an open bottom surface, and the removable hot water storage tank that maintains sealing between the inner side and the opening surface of the hot water storage tank container portion via an elastic member. By providing a hot water storage tank cover for energizing the bottom and the hot water storage tank bottom, it is possible to improve the sealability between the hot water storage tank container and the hot water storage tank bottom that can be divided.

  According to the invention described in claim 2, the hot water storage tank bottom is removed by maintaining the hot water storage tank container fixed to the main body and the detachable hot water storage tank bottom elastic member on the hot water storage tank container side. Sometimes, loss of the elastic member can be prevented.

  Furthermore, according to the third aspect of the present invention, it is possible to prevent condensation due to steam on the lower surface of the hot water storage tank installation part and to collect water droplets due to condensation in the coffee extraction chamber so as not to fall outside.

The invention described in claim 1 includes a main body, a tank for containing water, a check valve, a hot water generating device, a coffee extraction chamber, a coffee extraction chamber lid that covers the coffee extraction chamber, and the hot water generation. A hot water storage tank for temporarily storing hot water supplied from the apparatus, and intermittent hot water supply means for intermittently supplying hot water from the hot water storage tank to the coffee extraction chamber, the hot water storage tank having a bottom opening A container part and a detachable hot water tank bottom part, an elastic member is interposed between the hot water tank container part and the hot water tank bottom part, and the elastic part is formed by a wall part of the hot water tank bottom part and an inner wall of the hot water tank container part. First sealing is performed across the member, and the hot water storage tank bottom is biased from below the hot water storage tank bottom to press the elastic member to perform the second sealing to maintain the sealing in the hot water storage tank. , Hot water storage You can split click container part and the hot water storage tank bottom, also can be improved in between the sealing property.

  According to a second aspect of the present invention, in the configuration according to the first aspect, the elastic member interposed between the hot water storage tank container fixed to the main body and the removable hot water storage tank bottom is configured to remove the hot water storage tank when the hot water storage tank bottom is removed. The elastic member can be prevented from being lost when the hot water storage tank bottom is removed by being held on the tank container side.

  According to a third aspect of the present invention, in the configuration of the first aspect, a flange is provided on the outer periphery of the elastic member interposed between the hot water storage tank container and the removable hot water storage tank bottom, and is disposed below the hot water storage tank bottom. The hot water storage tank cover is installed by deforming the elastic member flange with the hot water storage tank cover to improve the sealing of the space formed by the hot water storage tank cover and the hot water storage tank bottom, and the hot water storage tank of the main body is installed Prevents condensation due to steam generated on the lower surface of the part.

  Embodiments of the present invention will be described below with reference to FIGS.

(Example 1)
FIG. 1 is a cross-sectional view of a coffee kettle illustrating Example 1 of the present invention. In the figure, numeral 1 is a main body of a coffee cooker, and a tank 2 for introducing water is installed. A hot water storage tank located above and passing through a hot water generator 6 provided with an electric heater 5 (not shown) that is turned on and off by a power switch 4 (not shown) via a check valve 3 at the bottom of the tank 2. 7 is connected to a water channel 8 for conducting water. Below the hot water storage tank 7, a coffee extraction chamber 11 that is substantially similar to the paper filter 10 for extracting coffee is installed in an opening of a container 9 for storing the extracted liquid after coffee extraction.

  In addition, the container 9 is installed above the hot water production | generation apparatus 6 of the main body 1 on the heat retention stand 15 comprised via the heat retention plate 12. As shown in FIG. As shown in the circuit diagram of FIG. 6, the heat retaining table 15 retains the coffee liquid in the container 9 by controlling the energization of the electric heater 5 of the hot water generating device 6 with a thermostat 14 as shown in the circuit diagram of FIG. 6. A coffee extraction chamber lid 13 is set to a size that covers the hot water storage tank 7 installation portion 16 of the main body 1. In addition, a hole 18 is provided in the central portion for supplying hot water from the hot water storage tank 7, passing through a water quality improvement filter 17 such as activated carbon and supplying it to the coffee extraction chamber 11. An inclined portion 19 is set from the outer periphery of the extraction chamber lid 15.

  FIG. 2 is a detailed sectional view of the hot water storage tank of the coffee kettle in the first embodiment. In the hot water storage tank 7, the elastic member 23 disposed between the hot water storage tank bottom portion 7a and the hot water storage tank container portion 7b is hooked and installed by the flange portion 20 provided at the lower end of the hot water storage tank container portion 7b. When the tank bottom portion 7a is inserted, the elastic member 23 is sandwiched between the wall portion 21 and the inner wall 22 of the hot water storage tank container portion 7b so as to maintain the airtightness. When the hot water storage tank cover 24 is further installed on the main body 1, the hot water storage tank bottom 7a is urged upward by the rib 25 of the hot water storage tank cover 24, the flange 20 side end surface of the hot water storage tank container 7b and the flange 26 of the hot water storage tank bottom 7a. The second sealing of the hot water storage tank 7 is performed by deforming the elastic member 23 by pressing.

  As shown in FIG. 3, when the hot water storage tank cover 24 is attached, the flange portion 32 provided on the elastic member 23 is deformed by the upper end surface 27 of the hot water storage tank cover 24 and attached.

  A hole 28 for attaching the water quality improvement filter 17 is provided at the lowermost part of the hot water storage tank cover 24 and is disposed inside the hole 18 of the coffee extraction chamber lid 15.

  29 is a pipe for supplying hot water to the coffee extraction chamber 11 provided on the hot water tank bottom portion 7a of the hot water storage tank 7 at a position substantially coincident with the center of the hot water storage tank container portion 7b of the hot water storage tank 7. Thus, intermittent hot water supply means for intermittently supplying hot water to the coffee extraction chamber 11 is configured. Reference numeral 30 denotes a hot water storage tank container portion 7b that is integral with the hot water storage tank container portion 7b that covers and covers the gap X with the upper end portion 29a serving as an opening portion of the tube body 29. The gap Y with the tank bottom 7a is set equal to or greater than the gap X.

  Reference numeral 31 denotes a hot water supply pipe connected to the water channel 8, and the opening 31 a is set above the upper end 29 a of the tubular body 29. Reference numeral 33 denotes a vent pipe provided on the hot water storage tank bottom 7 a, which is provided with a hole 34 for releasing steam to the outside on the upper surface, an upper end 29 a of the pipe body 29, and an opening of the hot water supply pipe 31. It is arranged at a position higher than 31a. That is, in the hot water storage tank 7, the upper end portion 29 a of the pipe body 29 ≦ the opening portion 31 a of the hot water supply pipe 31 ≦ the hole portion 34 of the vent pipe 33 is established.

  The operation of the coffee cooker configured as described above will be described below. Water corresponding to the number of people is poured into the tank 2, and coffee powder corresponding to the amount is stored in the coffee extraction chamber 11 in which the paper filter 10 is set, and set on the heat-insulating table 15. When the power switch 4 is turned on, water in the tank 2 is introduced into the hot water generator 6 through the check valve 3 and heated to generate hot water. Also, the bubbles generated at this time raise hot water in the hot water generator 6 through the water channel 8 due to the check effect of the check valve 3, and are supplied to the hot water storage tank 7. At this time, hot water supplied into the hot water storage tank 7 is supplied into the hot water storage tank 7 through the hot water supply pipe 31.

  And the hot water which flowed in the hot water storage tank 7 raises the water level, invading into the space space of the pipe body 29 and the cover body 30, as shown in FIG. Eventually, when the hot water level reaches the upper end 29a of the pipe body (maximum hot water storage capacity of the hot water storage tank 7) as shown in FIG. 5, the hot water in the hot water storage tank 7 becomes inside the pipe body 29 as indicated by the arrow A due to the siphon phenomenon. It flows out to the water quality improvement filter 17 through, passes through the hole 18 provided in the coffee extraction chamber lid 15 and permeates the entire coffee powder in the coffee extraction chamber 11 evenly.

  In this way, the hot water supply to the coffee extraction chamber 11 is performed using the siphon phenomenon that occurs when the hot water level in the water storage tank 5 exceeds the upper end portion 29a of the pipe body 29 (maximum hot water storage amount in the hot water storage tank 7). By performing intermittently, the coffee powder in the coffee extraction chamber 11 can be sufficiently steamed when the hot water supply is stopped, the coffee extract can be easily extracted, and the hot water supply for the second and subsequent times is the maximum hot water storage amount of the water storage tank 5. In the coffee extraction chamber 11, the coffee liquid is extracted while stirring the coffee powder, and the coffee liquid is stored in the container 9. At this time, since the hot water supply pipe 31 is disposed above the upper end portion 29a of the tubular body 29, no back flow to the hot water generating device 6 occurs.

  In addition, since the hole 34 of the vent pipe 33 is installed above the hot water supply pipe 31, hot water is prevented from jumping directly out of the hole 34 of the vent pipe 33 during hot water supply, so that hot water is surely supplied to the hot water storage tank 7. Can be supplied. Furthermore, since the hole 34 of the vent pipe 33 is disposed above the upper end 29a of the pipe body 29, it goes without saying that there is no problem of reducing the maximum amount of hot water stored in the hot water storage tank 7.

  When hot water is boiled by the hot water generator 6, steam is generated. When the water in the tank 2 is reduced, the head pressure of the water is reduced, so that it is difficult to supply water to the hot water generator 6 and the amount of steam increases. The steam is discharged to the outside through the hole 34 of the vent pipe 33. A part of the steam discharged from the hot water storage tank 7 is discharged from the hole 28 of the hot water storage tank cover 24, but most of the steam is condensed in the space formed by the elastic member 23 between the hot water storage tank cover 24 and the hot water storage tank bottom 7a. Therefore, the amount of steam to the outside can be reduced. At this time, the condensed water drops outside from the hole 28 of the hot water storage tank cover 24 provided at the bottom, but drops because the hole 28 is arranged inside the hole 18 of the coffee extraction chamber lid 15. Water can be collected in the coffee extraction chamber 11.

  Further, when the humidity is high, the steam that has passed through the hole 28 of the hot water tank cover 24 is condensed on the lower surface of the installation portion 16 of the hot water storage tank 7 of the main body 1 and the outer wall of the hot water tank cover 24. Since the size is set so as to cover the tank 7 installation portion 16, the condensed water is dropped on the coffee extraction chamber lid 15 and collected in the hole portion 18 by the inclined portion 19 and collected in the coffee extraction chamber 11. Can do.

  In this way, it is possible to suppress the vapor pressure by ejecting the steam downward, and it is possible to prevent the appearance of the main body 1 from getting wet due to condensation by inducing the steam downward.

  The hot water generator 6 continues to operate until the thermostat 14 is activated. When the thermostat 14 is activated, the energization of the electric heater 5 is once interrupted, but the coffee liquid in the container 9 on the heat insulating table 15 is kept warm by the automatic operation of the thermostat 14. The heat retaining operation is continued until the power switch 4 is turned off.

  When the temperature in the water storage tank 5 drops after the power switch 4 is turned off, the condensed water remains in the water storage tank 5. In this embodiment, in order to remove this residual water, the water storage tank cover 24 is rotated counterclockwise and removed from the main body 1, and then the residual water collected around the pipe body 29 of the water storage tank bottom 7a is removed. It becomes possible.

  Moreover, since the elastic member 23 is being fixed by the flange part 20 provided in the water storage tank container part 7b, the loss of the elastic member 23 at the time of attachment or detachment can be prevented.

Sectional drawing of the coffee cooker in Example 1 of this invention Detailed sectional view of the hot water storage tank Partial sectional view showing the configuration when the hot water storage tank cover is mounted A diagram showing how hot water is stored in the hot water storage tank A diagram showing how hot water from the hot water tank flows out Same circuit diagram

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Tank 3 Check valve 6 Hot water production | generation apparatus 7 Hot water storage tank 7a Hot water storage tank bottom part 7b Hot water storage tank container part 11 Coffee extraction room 13 Coffee extraction room cover 16 Installation part 18 Hole part 19 Inclination part 20 Flange part 23 Elastic member 24 Hot water storage Tank cover 28 Hole 29 Tube (intermittent hot water supply)
31 Hot water supply pipe 32 Flange part (elastic member)
33 Vent pipe 34 Hole (vent)

Claims (3)

A main body, a tank for containing water, a check valve, a hot water generating device, a coffee extraction chamber, a coffee extraction chamber lid covering the upper side of the coffee extraction chamber, and hot water supplied from the hot water generating device are temporarily stored A hot water storage tank, and intermittent hot water supply means for intermittently supplying hot water from the hot water storage tank to the coffee extraction chamber, wherein the hot water storage tank has a hot water storage tank container portion having a bottom opening and a removable hot water storage tank bottom portion. And an elastic member is interposed between the hot water storage tank container and the hot water storage tank bottom, and a first seal is provided with the elastic member sandwiched between the wall of the hot water storage tank bottom and the inner wall of the hot water storage tank container. The coffee boiling device is characterized in that the hot water storage tank bottom is biased from below and the elastic member is pressed to perform the second sealing to maintain the sealing in the hot water storage tank. The coffee boiling device according to claim 1, wherein the elastic member interposed between the hot water storage tank container fixed to the main body and the removable hot water storage tank bottom is held on the hot water storage tank container side when the hot water storage tank bottom is removed. A flange is provided on the outer periphery of the elastic member interposed between the hot water storage tank container and the removable hot water storage tank bottom, and the hot water storage tank cover disposed below the hot water storage tank bottom is provided on the elastic member by the hot water storage tank cover when mounted. The coffee kettle according to claim 1, wherein the coffee kettle is mounted with a deformed flange.

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