JPS6185906A - Coffee brewer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a coffee brewer that can automatically extract delicious coffee liquid by dripping boiling water onto coffee grounds.

Conventional structure and problems Traditionally, in order to extract a rich, aromatic and delicious coffee liquid, boiling water is used to swell the entire coffee powder with hot water, that is, the coffee powder is steamed and then coffee is made. After making it easier to extract the extract, it is good to reheat the hot water and extract the coffee. It is better to supply hot water to the coffee powder intermittently during the entire process, so that the steaming effect can be achieved at S hot water stop 05.

However, until now, it has not been possible to realize a household extraction system that provides intermittent hot water supply, and even if this intermittent lees production process were to be adopted, it would be necessary to have a 7ti:m valve opening/closing function by attaching a timer. However, the problem was that the vessel became large and complex, making it expensive to mount.

In view of the above-mentioned conventional problems, the present invention has an extremely simple structure, and uses boiling hot water at a high temperature from the beginning, so that it is gradually depleted into coffee powder throughout the entire extraction process. To provide a coffee boiler capable of extracting a rich, fragrant and delicious coffee liquid by dispensing coffee 1) every time hot water supply is stopped.

Structure of the invention: i: In order to achieve the above object, the coffee boiler of the invention includes a filter case for storing coffee powder, a water tank equipped with a heating element, and a water tank that generates water from the water tank.
2. The water in the water tank is pumped into the filter case by the air temperature detection element that detects (), the hot water supply valve that opens and closes in rhythm with the operation of this air temperature detection, and the operation of the hot water supply valve. The flow rate to the heating element is 1jl in rhythm with the operation of the XFj 7bj pipe that generates the lees fμ, and the operation of the gas detection element r.
It is equipped with a kasu'ichi switch that generates heat and a cut-off switch that senses the depletion of trees in the tank and cuts off the flow to the heating element, The lees temperature 5f is intermittently opened and closed by the base air generated through the vapor detection element, and hot water is supplied to the filter case.

According to the above configuration, the steam detection element detects the generation of steam from the main tank equipped with a heating element, opens the hot water supply jf, and
Mix the hot water in the tank with coffee powder in the filter case - 2X
Since the coffee liquid can be extracted by heating, the body will not turn into a dog and become complicated, and after the hot water has been supplied from the wooden tank, the water will be heated again by the heating element. The tank can be heated to a single-tube state, and the steam can be used to supply hot water again. By repeating these operations, hot water is automatically supplied to the coffee powder intermittently throughout the entire process of coffee extraction, and a delicious coffee liquid can be obtained due to the steaming effect.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In Figures i1 to 3, l is a container body, and this container body 1 includes a base 2 shaped like a flat, substantially cylindrical container, a container part 3 located above this base 2, and this container part 3. and 2 above. (The storage section 5 is formed of a support 4 that connects the side surfaces of the stand 2, and is surrounded by the vessel 1 and has a substantially mouth-shaped storage section 5 with an open space on the right side in the drawing. Reference numeral 6 denotes a wooden tank made of stainless steel, which is attached to the upper part of the container part 3, and has a heating element 7 in a stepped section at the bottom, and a hot water supply valve 8 attached at a position below the stepped heating element 7. 9 is a water inlet, and 10 is a lid. 11 is an 'fP arrowhead, which is provided on the side wall of the water tank 6 above the specified water level.

The supply 4 valve 8 has a valve stem 12 that can be raised and lowered, and a valve body 13 attached to the stem, which is biased by a valve spring 14 so as to be normally closed, and when the valve body 12 operates against the force of the valve spring 14. Open,
The water in the main tank 6 is transferred to the storage section 5 via the hot water supply vibrator 15.
Water is introduced into a hot water supply port 16 opened above.

17 is a hot water diffuser with a removable gasket 18
It is installed on Sjx '14th and 16th. The surface of this hot water diffuser has a groove, and the opening poem, hot water supply port 1
The hot water pressurized in step 6 is guided and dispersed by the grooves.

The hot water supply device supplies wood from the main tank 6 to the filter case using a hot water supply valve 8, a hot water supply vibrator 15, and a hot water supply port 16.

Reference numeral 19 denotes a filter case, which is disposed opposite to the hot water diffuser 17 and placed on the upper surface of the cup 20. An extraction port 21 is formed on the bottom surface of this filter case, and a filter 22 for storing raw wood 1e such as coffee powder is housed inside, and a case lid 2 with a pouring port 23 formed in the h part.
4 is attached.

The forceps 20 are located on the right side of the handle 25 and are detachably attached to a camp mounting portion 26 formed on the base 2.

27 is a heat-retaining heater for keeping the coffee liquid warm; 28 is a thermostart for temperature control; these are attached to the base 2 of the cup mounting section 26.

A frame 29 is provided below the support 4 of the base 2 and can be connected to a magnetic plug.

Reference numeral 31 denotes a steam detection tube, which protrudes upward from the upper surface of the support 4 on the side of the red air port 11 of the water tank 6, and has a substantially cylindrical shape that is installed in parallel with the water tank 6, and has a steam port on the upper side. An opening 32 is formed facing outward.

A brown detecting element 33 is disposed in the upper part of the vapor detecting tube 31 where the second opening 32 is located. This vapor detection element 33 is normally easily deformed and compressed by the spring force of the bias spring 34 disposed below, but at a certain temperature below 100°C, the vapor detection element 33 is For example, Ti-Ni has the property of stretching with a large restoring force in the state
It is made of a shape memory alloy made by processing a Cu-Zn type or Cu-Zn type alloy into a coil spring shape.

The extension operation of the normal air detection element 33 is carried out by a sliding rod 3 which is disposed in contact with the lower end surface and is movable up and down on the inner surface of the vapor detection tube 31.
5 to one side of the lower rotatable valve lever 36.

A waterproof seal 37 is located at the lower part of the steam detection tube 31, and its peripheral edge is fixed to keep the sliding rod 35 airtight inward, and to connect the inside of the steam detection tube 31 and the inside of the vessel body 1. It's blocked.

The valve valve /<-36 has a protruding piece 39 that is rotated by the sliding movement Fj=1 to ++35 and opens a normally closed power supply switch 38 that communicates with the heating element 7, and The other end is in contact with the lower end surface of the square rod 12 which protrudes from the hot water supply valve 8 through the diaphragm 4o via a fulcrum.

Reference numeral 41 denotes a power button, and 42 a cut-off button, both of which are provided on the upper part of the support column 4 and are designed to return to their original positions by themselves. 'When the power button 41 is pushed downward, it is locked by a spring-biased lock plate 43, and the power switch 44 is closed at the same time.

45 is a power cutoff switch installed on the surface of the water tank 6T.For example, as a manual reset type thermostat, it can be used to quickly prevent the ice in the water tank 6 from drying up and the temperature at the bottom of the water tank 6 to rise. It senses and opens, and operates to cut off the electricity to the heating element 7. This allows the completion of hot water supply to be detected. In addition, when the cut button 42 is turned and the lock between the power button 41 and the lock plate 43 is released by the release piece 46, it is configured to return to its original position via the lever 8-47.

No. 4r:A shows an electric circuit diagram, and 48 and 49 are power supply terminals, which are connected to a power source of, for example, 100V, and exit from both contacts of the first magnet plug 30. 44 is a power switch, and between this Ichihara switch 44 and the power terminal 49, there is a heat insulating heater 27, a thermostat 28 for controlling the temperature of the insulating heater 27, and a temperature fuse 50 for preventing excessive temperature rise in the event of an abnormality. The series circuit, the heating element 7 via the power supply switch 38 which is a normally closed contact, the determination switch 45 which operates by sensing the completion of supplying water in the water tank 6, and the temperature fuse 51 for preventing over-temperature rise. The series circuit has a common contact 52
．． 53.

Next, 4. : The effect of the example will be described.

First, the filter case 19 in which coffee powder is put into the filter 221 is placed on the cup 20, and this cup is placed on the cup placement part 26.

Pour water into the water tank 6 and perform 10. Connect the magnet and door lug 30, with one end inserted into the connector, to the frame 29, and press the power button 41. The power switch 7 44 closes and connects the heating element 1 7 and the heat-retaining heater 27. C hit. This state is maintained by locking the power button 41 downward by the locking plate 43. The wood in the water tank 6 is heated by the heating element 7 and its temperature rises, and at around 100 degrees Celsius it only produces steam from the water surface, but as the heating progresses further and reaches the dropping point of 100 degrees Celsius, it turns into steam. Occurs continuously.

In addition, the force is so strong that it can jump out even from a small gap, and is ejected from the 1E air port 11 above the side wall of the water tank 6. The ejected steam enters through the opening 32 at the top of the steam detection tube 31 facing the base air port 11 and hits the brown taste detection element 33 arranged inwardly, and the temperature of the steam detection element 33 is increased by this steam. Instantly changes from atmospheric temperature to 100℃
As a result of this rapid temperature rise, the compressed coil spring shaped Alloy No. 70 stretches with a large restoring force to its original stretched state at the time of memory treatment (see Figure 3).

The movement due to this restoring force naturally overcomes the bias spring 34 and expands, pushing down the sliding rod 35 and rotating the valve lever 36 to the left. Then, the other end of the valve lever 36 is connected to the valve spring 1.
4, the valve stem 12 is pushed up against pressure 4, so the valve opens, and the boiling, high-temperature water in the water tank 6 flows into the hot water supply vibrator 15 and the hot water supply port 1.
6 into the filter case 19.

At the same time, the power supply switch 3 is opened by the rotation of the valve lever 3B, so that the power supply to the heating element 7 is cut off and heating in the water tank is stopped.

By stopping the heating, the generation of steam in the water tank 6 is stopped, the jetting of steam from the steam port 11 is stopped, and the temperature of the steam detection element 33 is lowered.

When the temperature of the vapor detection element 33 drops, the restoring force is lost,
/The elastic force of the Heias spring 34 returns it to its original compressed state. Therefore, the valve lever 36 rotates to the right and returns to its original position, so the hot water supply valve 8 closes, and the hot water supply to the filter case 19 is stopped, and at the same time, the candy switch 3 is closed and the water tank is again supplied. Heating element 7 until steam erupts in 6
is energized. This operation is repeated until there is no more wood in the water tank 6, so that S0 hot water is intermittently supplied to the fish tank 19.

When the water in the water tank 6 runs out, the temperature of the heating element 7 begins to rise, and this temperature rise is quickly sensed and the cut-off switch 45 operates to stop further heating by the heating element 7.

On the other hand, the dimensions of the hot water supply apparatus are set so that the entire extraction process is completed in 3 to 4 minutes at the same time as the intermittent hot water supply into the filter case 19. Therefore,
The hot water poured into the coffee grounds in the filter case 19 uses high-temperature boiling water, and by repeating intermittent hot water supply, a sufficient steaming effect is exerted every time the candy bath is stopped, so that the coffee grounds are sufficiently swollen. Then, when the coffee extract is easily extracted, hot water is supplied and the coffee liquid is extracted.The series of steps is repeated, and a predetermined amount of the coffee liquid is stored in the cup 20. .

The stored coffee liquid is kept warm at a temperature suitable for drinking by a heat-retaining heater 27 and a thermostat 28.

After use, press the cut-off button 42 and the locking plate 43 will close the power button 41.
is released from the locked state and self-returns upward, the power switch 44 is opened, and power to the heating element 7 and the heat-retaining heater 27 is cut off. At the same time, the power cutoff switch 4 to the heating element 7 is turned on.
5 is returned and closed by operating this switch button 42.

In this way, the coffee ladder device of this embodiment converts the water in the water tank into steam that is repeatedly generated by heating the heating element and stopping the heating, and works in conjunction with the steam detection element that fluctuates due to this steam to intermittently send water to the filter case. Therefore, boiling water can be supplied to the coffee grounds intermittently throughout the entire coffee brewing period, so that the coffee grounds are sufficiently steamed and the extract is easily extracted while the hot water supply is stopped. After that, the process of supplying hot water and extracting the coffee liquid is repeated several times, resulting in a richer, more fragrant and delicious coffee liquid.

Moreover, since the hot water supplied during the extraction period is always at a low boil, constant extraction conditions are ensured from the beginning of the water supply, and the total extraction time is set to 3 to 4 minutes to achieve a high steaming effect. It is possible to realize a short-time extraction at a high temperature, and there is no defective components such as smudges that precipitate when the extraction time is exceeded.

In addition, since the configuration is performed in conjunction with the steam repeatedly generated when heating of the heating element 7 is stopped, the operation can be performed reliably with an extremely simple configuration, and the structure is simple.

Also, since steam is used, the temperature that appears on the steam detection element is 1
It is always stable at a constant value of 00°C, and the temperature it detects is subject to a rapid temperature change from atmospheric temperature to 100°C, so that temperature change can be sufficient for detection. Therefore, there is an advantage that the detection accuracy is significantly relaxed and can be adopted.

Furthermore, if the vapor detection element is made of a shape memory alloy as in this embodiment, it can serve the two functions of vapor detection and the operating force generated by the detection at the same time, and is miniaturized with an extremely simple coil spring shape. , and part 2
Various effects such as no error in sensing two functions can be achieved.

Furthermore, since the coffee is extracted with boiling water, even hard water is softened, allowing the use of delicious water, which is a condition for extracting good-tasting coffee liquid, and also removes chlorine odor, which can interfere with the taste of coffee. There's nothing to do.

In addition, if the water tank 6 is made of a stainless steel container, high-temperature water of nearly 100°C, which could not be used with conventional synthetic resin tanks, can be used, and the time required to boil the water before steam is ejected is shortened, which greatly shortens the usage time, making it easy to use. Therefore, there is no precipitation of total components (Fe, g in A1.) which are said to be bad for coffee extraction, and there is no problem of resin odor occurring in the coffee liquid.

In this example, the shape memory alloy was explained as a unidirectional shape memory alloy that returns to its original state by the elastic force of the bias spring, but a bidirectional shape memory alloy that also remembers the return direction was used. Then, the structure of the alcohol detection section can be further simplified and adopted.

Also, the same effect can be expected by using a temperature thermistor and a FL magnetic valve in place of the shape memory alloy.

Furthermore, the power cutoff switch may be configured with a water level detection thermistor or a water level detection switcher instead of the manual return type thermostat, and the switch is not limited to the above embodiment, but may be modified as appropriate without departing from the gist of the invention. Of course it's good.

Effects of the Invention As described above, the present invention is configured so that the water in the water tank is turned into steam that is repeatedly generated by heating and stopping the heating of the heating element, and intermittent hot water is supplied to the filter case in conjunction with this electricity. As a result, high-temperature boiling water can be intermittently supplied to the coffee grounds during the coffee extraction period, making it possible to extract a rich, fragrant, and delicious coffee liquid.

Moreover, since it is configured using steam pipes, the operation is reliable and the detection accuracy is greatly reduced.The configuration does not require a timer neck, etc., and the muscle part is compact, and it can be used simply by operating the power switch. It is possible to provide a simple coffee boiler that can automatically perform the coffee extraction process.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, FIGS. 2 and 3 are enlarged sectional views showing the operation of a vapor detection element, and FIG. 4 is an electric circuit diagram. 6... Water tank 7... Heating element 8... Hot water supply valve 15... Hot water supply pipe 19... Filter case 33... Brown taste detection element 38... Power supply switch 45... Cut off Kansui 7,000

Claims (4)

[Claims] (1) A filter case for storing coffee grounds, a water tank equipped with a heating element, a steam detection element that detects the steam generated from this water tank, and a hot water supply valve that opens and closes in conjunction with the operation of this steam detection element. , a hot water supply pipe that supplies water from the water tank into the filter case by the operation of the hot water supply valve; a power supply switch that controls energization of the heating element in conjunction with the operation of the steam detection element; and a power cutoff switch that detects the depletion of water in the tank and cuts off electricity to the heating element, and intermittently opens and closes a hot water supply valve via a steam detection element using steam generated from the water tank, A coffee boiler characterized by supplying hot water to a filter case. (2) The coffee brewer according to claim 1, in which a shape memory alloy is used as the vapor detection element. (3) The coffee brewer according to claim 1, which uses a bidirectional shape memory element in which a return direction is stored as the vapor detection element. (4) The scope of the patent claims that the steam detection element is arranged in a steam detection pipe provided adjacent to the steam port of the water tank, and engaged with a valve lever via a sliding rod to open and close the hot water supply valve. The coffee brewer according to item 1.