JPS63171528A - Electric coffee maker - 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 an electric coffee brewer for grinding coffee beans and automatically extracting coffee.

2. Description of the Related Art In general, electric coffee boilers having a function of grinding coffee beans have been desired to be able to be operated more efficiently and to drink delicious coffee without losing the flavor of the coffee.

For this reason, traditional electric coffee boilers
For example, as shown in FIGS. 8 and 9, there is a system that grinds coffee beans and immediately extracts the coffee automatically. In FIG. 8, the coffee bean grinding section 8
0 and the coffee extraction part 81 are provided at the same location, a filter 82 is provided at the bottom, and a lagoon discharge hole 84 is provided at 183 covering the top. In FIG. 9, the coffee bean grinding section 85 and the coffee extraction section 86 are arranged side by side, and a tide discharge hole 88 is provided in the upper part of the extraction section of the WB2 that buds the coffee bean grinding section 85 and the coffee extraction section 86. .

Problems to be Solved by the Invention In the conventional electric coffee boiler, as shown in FIG. To,
There are problems in that the extract is mixed with fine powder of coffee beans, making it cloudy and has a bad texture, and that the mesh filter 82 is clogged with coffee powder residue and is difficult to clean after use.

In addition, as shown in Figure 9, grinding and extraction are performed at separate locations, the coffee beans are ground, and the coffee powder is sequentially transferred to the extraction section by centrifugal force. After the transfer is completed, extraction is automatically performed. In the case of a coffee grinder, fine powder of coffee adheres to the inner surface of the coffee bean grinding section 85 and the cover 87 that covers the grinding section 85 and the extraction section 86 due to static electricity, and remains unused for extraction, which is uneconomical. Moreover, there was a unique problem in cleaning after use, as there were many parts that had to be cleaned.

The present invention solves the above problems and is easy to operate.
Our aim is to provide an electric coffee boiler that can brew delicious coffee without losing the flavor of the coffee.
It is something that

Means for Solving Problem J Qi In order to solve the above problems, the present invention has a
It is equipped with a storage chamber that houses a coffee chamber, a grinding chamber that communicates with the storage chamber and the coffee extraction chamber through a porous filter, and is equipped with a cutter driven by a motor inside, and further includes a A tank that accommodates
A heater for introducing and heating the water in the tank and discharging the hot water to the storage, and a time switch 116 for controlling the drive of the motor and the supply of electricity to the heater, and this time switch is used to drive the motor. After that, it is configured to switch the power supply to the heater and re-drive the motor when the lagoon is discharged into the storage string.

Operation With the above configuration, everything from grinding coffee beans to extraction of coffee is automatically performed, and when the residue is discharged into the coffee bean storage, the cutter is rotated by re-driving the motor, and the grinding chamber is rotated. It can remove fine coffee powder that has adhered to the surface.

Example Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows an embodiment of the present invention, and is a sectional view of a main part of an electric coffee maker. In FIG. 1, reference numeral 1 denotes a grinding chamber for coffee beans, which is equipped with a cutter 3 driven by a motor 2, and a porous filter plate 4 at the bottom through which only powder ground to a predetermined particle size passes through. Further, the grinding chamber 1 is integrally formed with a coffee bean storage Fit 5 having a substantially conical shape, and the grinding chamber 1 and the coffee bean storage 5 communicate with each other at the bottom. The beans in the coffee bean storage 5 form a bridge and are prevented from moving to the grinding chamber 1. The cutter 3 has a cruciform shape when viewed from the front and stores coffee beans.
5, the cutter 3 prevents a large number of beans from entering the grinding chamber 1 at once, which prevents the motor 2 from being overloaded. In addition, the tips 6 of the two blades of the cutter 3 are bent toward the motor 2, and the curve is not perpendicular to the axis of the blade, but is bent at a slight angle to increase centrifugal force on the crushed powder. are doing. Moreover, a discharge lower that spouts out water is arranged at the upper part of the coffee bean storage n5. A waterproof gasket 8 prevents the powder from entering the *S motor 2 discharged into the grinding chamber 1. 9 is a vibration-proof rubber which absorbs vibrations generated in the motor mounting bracket 10 when the motor is driven. Reference numeral 11 denotes a main body cover, which has a coffee bean inlet 12 formed on its upper surface, and is equipped with a 1113 for opening and closing the coffee bean inlet [112].
This fi 13 is formed by protruding the upper part of the coffee bean inlet 12 into a substantially dome shape, and has a cylindrical rib 14 around the periphery of the fi 13. This prevents leakage from the fi5 and the pirm of the coffee bean inlet 12. Further, the fi 13 has a steam hole 16 whose outer periphery is surrounded by a lip 15. Furthermore, the fi 13 has a protrusion 11 having a substantially circular cross section formed at a part of one end thereof.
The hinge portion 21 is sandwiched between a protrusion 18 formed on the main body cover 11 along this protrusion 17 and a protrusion 20 formed on the main body cover 11 along an arc als19 on the outer periphery of one end of 1113. It is formed. 22.23
is a waterproof seal that prevents water and steam from entering the inside of the main body 24, and also absorbs vibrations that occur when the main body 24 is driven. The filter 4 is attached to the lower part 24 of the main body with a screw (not shown)? 2.Removably attachable filter holder 25
It is formed integrally with +J! After 10 minutes, the interior of the crushing chamber 1 can be easily cleaned.

Reference numeral 26 denotes a coffee brewing chamber, and a brewing lid 27 is removably attached to the top surface of the coffee brewing chamber 26. When the coffee brewing chamber 26 is inserted into a guide rib 28 formed in the lower part 24 of the main body on the side surface, the coffee brewing chamber 26 is lifted diagonally upward along the guide rib 28. Guide part 29
is formed. In addition, the extraction lid 27 has an inverted U'7'
A powder seal 30 made of an annular elastic body with a cross-sectional shape is integrally installed, and when the coffee extraction chamber 2G is inserted into the upper part 24 of the main body, it elastically fits into the end face of the filter holder 25 from below, and this fitting part Prevents powder and lagoon from leaking out.

FIG. 2 is a sectional view of the tank and flow path portion of the electric coffee brewer. In FIG. 2, reference numeral 31 denotes a tank for storing water, which is detachably provided in the lower part 32 of the main body.

When the tank 31 is stored, the upper surface of the tank 31 is covered with an eaves section 33 extending from the lower part 24 of the main body.
It prevents it from falling out. Further, when the main body is stored, the tank 31 communicates with a sensing chamber 35 provided in the lower part 32 of the main body via a valve 34. A thermostat 36 and a check valve 37 are attached to the bottom wall of the sensing chamber 35, and the thermostat 36 is arranged such that the receiving S portion 38 faces the sensing chamber 35. 39 is a heater that heats the water introduced from the tank 31 in the heating section 40 and passes it through the water storage pipe 41 to the flow path switching chamber 42.
It pushes up the water and keeps the coffee liquid warm after extraction is complete. Reference numeral 75 shown in FIG. 6 is a thermostat that controls the temperature of the heater 39 to keep it warm. The flow path switching chamber 42 is
As shown in FIG. 3, there is an inflow path 43 for hot water, an outflow path 44 that opens on the side of the tank 31, an outflow path 45 that opens on the side of the coffee bean storage container 5, and each of the outflow paths 44 and 45. Either one! ! Operating valve 46 that operates for 1 s and operating valve 4
It consists of a lever 47 that operates 6 from the outside of the flow path switching chamber 42 using A as a fulcrum, and a flexible body 48 that moves in accordance with the operation of the lever 47. One end 49 of the lever 47 is always biased clockwise by the spring 50 and flows out [45 rJ]g.

In FIG. 3, 51 is a time switch that has a timer motor 52 for timed operation inside, and as shown in the tAG diagram, it can selectively supply the main power to either the heater 39 circuit or the timer motor 52 and motor 2 circuit. It has built-in switches S1a and S1b which can be switched to , a switch S2 interposed in the circuit of the timer motor 52, and a switch S3 interposed in the circuit of the motor 2. In addition, heater 3
The circuit No. 9, the timer motor 52, and the motor 2 circuit are connected via a thermostat 36 that turns on when a predetermined temperature is reached. Further, the time switch 51 has a cam 54 attached to its time setting shaft 53, and is configured to drive an operating rod 56 via an arm 55 in connection with the time setting operation.

When the peak of the cam 54 and the arm 55 are in contact with each other as shown in FIG. When the trough of the cam 54 and the arm 55 are in contact with each other, the outflow path 45 is closed. This cam 54 has three peaks 57, 58, 59 and three troughs 60,61°62.
is formed, and the flow paths are sequentially switched in conjunction with a timed operation. Furthermore, a concave portion 63 is formed in the cam 54, and a recess 63 is formed at a position facing the four portions 63, and 1113 is connected to the r! when the main power is turned off. A tip 68 of a lock lever 67 that is engaged with a lock knob 64 that locks in the JJ rich state and is constantly urged in the direction of the arrow 66 by a spring 65 is disposed, and when the time switch 51 is turned off, the tip of the lock lever 67 is pushed into the recess. Unless the lock knob 64 is opposite to the spring 6
The structure is such that it is not possible to open 'H13 by moving it against the position 5. 69 is a start knob for turning on the main power after setting the time limit. Figure 1', Figure 3
In the figure, C pull 70 is the time switch 51 and lock lever.
This is a mounting plate for attaching 67 etc.

In FIG. 5, 71 is a safety switch connected in series to the main power circuit as shown in FIG.
is closed when the base 13 is closed.

The spring 72 also has the function of popping up the lid 13 when the lock knobs 64 and 113 are disengaged.

Figure 7 shows the overall appearance, with a lock knob 64 on the front.
A start knob 69 and a time limit setting knob 74 attached to the time limit setting main shaft 53 are arranged.

J3 is in the above IIIJ configuration, puts the coffee beans in the storage 5, opens the cover 13, puts water in the tank 31, puts the coffee brewing chamber 26 in the predetermined position, and sets the time switch 51 to a predetermined time. , press start knob 69 and press J.
The switch S1b is closed, the motor 2 starts to drive, and the timer motor 52 starts to operate in the IX1 limit. At this time, the trough 60 of the cam 54 and the arm 55 come into contact with each other, releasing the outflow path 44. After the coffee beans are sequentially crushed and discharged to the coffee extraction chamber 26,
The switch S1b is switched to 1fis1a, the operation of the motor 2 and the timer motor 52 is stopped, and energization of the heater 39 is started. At this time, the water in the tank 31 is heated and returned to the tank 31 through the outflow path 44.

Eventually, when the water inside the tank 31 reaches a predetermined temperature,
The thermostat 36 is turned on, and power supply to the motor 2 and the timer motor 52 is started again. timer motor 52
With the operation of the cam 54, the cam 54 gradually moves to the point where the crest 57 and the arm 55 come into contact with each other, Vll, and the outflow path 45 is rF! Let go.

Therefore, the preheated lagoon becomes high temperature again by the heater 39, is discharged to the coffee bean storage 5, and is driven by the motor 2.
The coffee beans are stored by the cutter 6 which is rotated by the n5
The fine powder is diffused toward the wall of the coffee bean storage 5 and the grinding chamber 1 and adheres to the filter holder 25, thereby cleaning the fine powder. After a predetermined period of time, the time switch 51 opens the switch S3 and the motor 2 is stopped. timer motor 52
The cam 54 continues its timed operation, and after performing the primary hot water supply in the coffee brewing procedure, it moves to the valley 61 and closes the outlet 45 again to stabilize the so-called unevenness. The robot moves for a time, moves further, climbs onto the mountain 58, opens the outlet 45, starts secondary water supply, and opens the switch S2 to end the timed operation of the timer motor 52. Coffee extraction continues after (after tank 31
When all of the water has been discharged, the thermostat 75 continues to energize the heater 39 to keep it warm.

Maintenance after use is completed by pulling out the coffee extraction chamber 26, lifting out the coffee powder after extraction, and then cleaning it.

Effects of the Invention According to the present invention, the Tanabata drive and the power supply to the heater are controlled 1-! The time switch is configured to drive the motor, then switch the power to the heater, and then drive the motor again as soon as the lagoon is discharged into the storage piece, so it automatically grinds the coffee beans and extracts the coffee. In the process, when the lagoon is discharged into the coffee bean storage, the motor is re-driven to rotate the cutter to remove the fine coffee powder that has adhered to the grinding chamber, and the grinding chamber can be cleaned again after use. The coffee brewer is so easy to use that you don't even have to do it, and its effects are huge.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the essential parts of the V electric coffee boiler showing an embodiment of the present invention, Fig. 2 is a cross-sectional view of the tank and flow path portion of the electric coffee boiler, and Fig. 3 is a cross-sectional view of the V electric coffee boiler. 4 is a front view of the time switch section of the electric coffee boiler; FIG. 5 is a sectional view of the safety switch section of the electric coffee boiler; FIG. 6 is a circuit diagram of the electric coffee maker, FIG. 7 is an external view of the coffee maker, and FIGS. 8 and 9 are sectional views of the conventional electric coffee maker. 1...Coffee bean grinding chamber, 2...Motor, 3...
Cutter, 4...Filter, 5...Coffee bean storage, 7...Discharge port, 11...Body cover, 12...
・Coffee bean inlet, 13...lid, 24...upper body, 26...coffee extraction chamber, 31...tank, 3
2... Lower body, 39... Heater, 42... Flow path switching chamber, 43... Inflow channel, 44... Tank side outflow channel, 45... Storage door side outflow channel, 51... ...Time switch, 52...Timer motor. Agent Yoshihiro Morimoto Figure 4 Figure 1 Figure 1

Claims (1)

[Claims] 1. At the top of the coffee extraction chamber, there is a coffee bean storage that stores coffee beans, and a coffee bean storage that communicates with the coffee bean storage and the coffee extraction chamber through a porous filter and is driven by a motor inside. a grinding chamber equipped with a cutter and a tank containing water; a heater for introducing and heating water in the tank and discharging hot water into the coffee bean storage; This electric coffee boiler is equipped with a time switch that controls the drive and energization of the heater, switches the energization to the heater after the motor is driven, and re-drives the motor when hot water is discharged into the coffee bean storage.