JPH0147166B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a coffee boiler that uses a timer motor to control energization of a drive motor that drives a cutter and a heater that heats a hot water pipe. .

(b) Prior art A conventional coffee boiler has a configuration in which cold water stored in a hot water supply pipe comes out due to the siphon phenomenon when it is first activated, and then hot water is supplied almost continuously into the coffee mill. As a result, the coffee powder shrinks when exposed to cold water first, and even when hot water is poured afterwards, the coffee powder does not swell properly, resulting in a loss of flavor of the coffee liquid.

(c) Purpose of the Invention Therefore, the present invention returns the cold water at the beginning of operation to the water tank side, then supplies only hot water to the coffee powder to cause it to swell, and even when it swells after this hot water is supplied, the hot water is returned to the water tank side. The purpose is to provide a flavorful coffee liquid by eliminating the extraction of impurities other than the taste and aroma of coffee by continuously supplying hot water after the swelling is completed.

(d) Structure of the invention The structure of the present invention includes a body having a drive motor;
a mill case having a cutter and a filter driven by the drive motor; a hot water pipe having one end connected to a water tank containing water, a middle part wrapped around a heater, and the other end open to the outside; the drive motor and The rotor is composed of a timer motor that controls the energization of the heater, and a rotor that rotates in conjunction with the rotating shaft of the timer motor and faces the opening of the hot water supply pipe to vary the direction of hot water output, and the rotor that controls the energization of the drive motor. The timer is set so that hot water is supplied to the water tank side at the initial stage of energization of the heater after being cut off, then switched to the mill case side, then switched to the water tank side, and then switched again to the mill case side for continuous hot water supply. The rotation of the rotor is controlled by the rotation shaft of the motor, and the rotor is rotated using the rotation shaft of the timer motor that controls the power supply to the drive motor and heater, and hot water is supplied into the rotor. The purpose is to ensure that the coffee powder swells by supplying hot water to the tank side or to the mill case side as appropriate, thereby producing a flavorful coffee liquid.

(e) Embodiment 1 is a coffee boiler main body, which includes a machine body 5 having a drive motor 6, a water tank 2 with an open top, and a mounting table 4 for a decanter 3, and a storage section 7 for the drive motor 6.
A mill case 8 is detachably disposed on the upper surface, a heater 9 in the form of a hot plate is disposed below the mounting table 4, and one end is connected to the water tank 2 through a check valve 10.
a hot water supply pipe 11 that communicates with the heater 9, has its middle part wrapped around the heater 9 in a thermally conductive manner, and has the other end opened to the outside;
It is equipped with a timer motor 12 and the like that control energization of the drive motor 6 and heater 9. The hot water supply pipe 11 has an inner diameter smaller than the hot water pipe from the water tank 2 to the heater 9 in its inner diameter from the outlet side of the heater 9 to the external opening, and extends horizontally at the tip, as will be described later. A cap is set up. The mill case 8 consists of a bottomed lower case 8a with an opening on the upper surface, and an upper case 8b having a sieve plate 14 on the lower surface, and an extraction hole 15 for extracting coffee liquid is bored in the outer lower part of the lower case 8a. A cylindrical guide tube 16 is integrally formed in the center, and a filter 17 is detachably attached, an inner lid 18 is placed on the upper opening of the upper case 8b, and a cutter 19 is provided in the center of the sieve plate 14. A mounting member 20 supporting the is loosely fitted. The mounting member 20 is a transmission shaft 21 extending from the drive motor 6, with a connecting portion 22 facing into the guide tube 16. The sieve plate 14 has a large number of through holes 14a and is provided with a diffusion gutter 23 on its lower surface. This diffusion gutter 23 has a radial shape, has a plurality of water spray holes in its bottom surface, and forms an inlet 24 for receiving hot water. When the upper case 8b and the lower case 8a are engaged and placed on the mounting table 7, the mounting member 20 and the transmission shaft 21 are engaged with each other.

By turning on the power switch 25, the timer motor 12 drives the drive motor 6 for a predetermined period of time to grind the coffee beans into coffee powder with the cutter 19, and then automatically turns off the power to the drive motor 6. The heater 9 is stopped and the heater 9 is energized to heat the water in the hot water supply pipe 11. The timer motor 12 is connected to the mounting base 7 via a mounting board 26.
An endless transmission belt 28 is fixed to the inner wall of the rotating shaft 12a via a first pulley 27.
is wound around the transmission belt 28, and the first pulley 2 is attached to the transmission belt 28.
A second pulley 29 that is paired with 7 is provided.
Reference numeral 30 denotes a support plate disposed at a suitable position inside the mounting table 7, on which a rotating horizontal bar 31 pivotally supported by the second pulley 29 is disposed. A first bevel gear 32 is attached to the end of the rotating horizontal bar 31. 33 is a rotor shaft rotatably installed on the support plate 30, a second bevel gear 34 that engages with the first bevel gear 32 is attached to the lower part, and a rotor to be described later is fixed to the upper part. ing. 35 is an L-shaped locking plate that supports the rotor shaft 33. The rotor shaft 33 is inserted into and held within a guide support tube 35 erected on the body 5.

A water spray container 36 having an open top is fixed to the upper part of the guide support cylinder 35. This watering container 36
A pair of return holes 37, 38 are provided at a distance on the bottom surface of the
and a hot water supply hole 39, and the respective holes 37, 38,
39 is divided into sections by partition walls 40, 41, and 42. The return holes 37 and 38 are formed so as to face into the water tank 2, and the hot water supply hole 39 is formed so as to face the inlet 24 of the diffusion gutter 23. Further, an insertion hole 44 for inserting the rotor shaft 33 is formed in the center of the water spray container 36. Reference numeral 45 denotes a rotor with an open top surface that is loosely fitted into the water spray container 36, and is attached to the tip of the rotor shaft 33 and has an outflow hole 46 formed in the bottom surface. A display body 47 is integrally fixed to the center of the rotor 45. Reference numeral 48 denotes a cover that covers the rotor 45 and the water spray container 36, has a dome-shaped outer shape, is transparent, and forms a cap receiving portion 49 for receiving the hot water supply pipe 11. The cap receiving portion 49 has an L fixed to the tip of the hot water pipe 11.
A letter-shaped cap 50 is fitted into the rotor 45, and the tip of the cap 50 is exposed to the inside of the rotor 45. 55 is a mounting piece. A pouring direction conversion member 5 having an opening of the cap 50 facing the display body 47 and having an upwardly inclined surface 51 at the opening changes the pouring direction upward.
2 is installed. Reference numeral 56 designates an outer lid that covers the water tank 2 and the mill case 8, and has a cutout opening 57 for allowing the cover 48 to escape. The first return hole 37 is located in the first partition part 37 at the part of the watering container 36 that is divided by the partition walls 40, 41, and 42.
a. The second return hole 38 is located as a second partition 38a, and the hot water supply hole 39 is located as a third partition 39a.

To explain the operation with such a configuration, upper case 8
The process is started by storing the desired coffee beans in the container b and the desired water in the water tank 2, and then rotating the knob 12a of the timer motor 12 and pressing the power switch 25. First, the drive motor 6 rotates to rotate the cutter 19, crushing coffee beans and collecting them as coffee powder in the filter 17 through the through holes 14a of the sieve plate 14. During the rotation of the cutter 19, the outflow hole 46 of the rotor 45 is transferred to the first partition 37 by the transmission from the rotating belt 28 to the horizontal rotating rod 31 to the rotor shaft 33 to the rotor 45.
It is rotating in the direction of the arrow so that it is located at point a. Then, after a predetermined period of time has elapsed, the drive motor 6 stops rotating, and then the heater 9 is switched and energized to heat the water in the hot water supply pipe 11 in a drip method.
At this time, the water remaining in the hot water supply pipe 11 with a small inner diameter from the heater 9 to the rotor 45 becomes lukewarm water and is supplied to the rotor 45, and the outflow hole 46 → first partition 37a → return hole 37 → water It is returned via the route designated as tank 2. Subsequently, after a predetermined period of time has elapsed, the rotor 4 is further moved by the timer motor 12.
5 rotates in the direction of the arrow to connect the outflow hole 46 to the third section 3.
9a, the hot water is allowed to flow down through the rotor 45→outflow hole 46→third partition 39a→hot water supply hole 39→diffusion gutter 23, and to the coffee powder in the filter 17 below the diffusion gutter 23. Supply hot water to promote swelling. When hot water suitable for swelling is supplied to the coffee powder, the rotor 45 is further rotated and the outflow hole 4
6 is opposed to the second partition 38a and hot water is returned to the water tank 2 side during swelling. Further, when the time for the swelling to end has elapsed, at that time the rotor 45
The outflow hole 46 stops at the third partition 39a and operates to continuously supply hot water to the diffusion gutter 23 side.
When hot water is supplied to the swollen coffee powder, a coffee liquid with good flavor is obtained.

In addition, since the display body 47 fixed to the rotor 45 is also rotating during hot water supply, the user can confirm through the transparent cover that hot water is being supplied. Since it is small, the supply speed of hot water is faster.

(f) Effects of the invention Since the present invention is constructed as described above,
The cold water that was originally stored in the hot water pipe due to the siphon phenomenon is returned to the water tank without being supplied to the coffee grounds, making it possible to supply only hot water to the coffee grounds, and also ensure the swelling of the coffee grounds. It is possible to obtain a flavored coffee liquid.

Furthermore, everything from pulverizing coffee beans to supplying hot water to the ground coffee powder is done automatically, eliminating the need for transferring coffee powder as in the past, and in combination with the above-mentioned effects, it is possible to obtain a flavorful coffee liquid. Can be done.

Moreover, since these operations are performed using the driving force of the rotating shaft of the timer motor, the rotational force can be reliably transmitted to the rotor to be switched without using a dedicated changeover switch.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the coffee brewer of the present invention;
3 is an enlarged perspective view of the main part of FIG. 1, FIG. 4 is an enlarged perspective view of another part of the main part of FIG. 1, and FIG. 5 is an enlarged sectional view of the same main part. FIG. 6 is a plan view of the rotor, and FIG. 7 is a plan view of the watering container. 2... Water tank, 8... Mill case, 11...
Hot water pipe, 12... Timer motor, 45...
rotor.

Claims (1)

[Claims] 1. A machine body having a drive motor, a mill case having a cutter and a filter driven by the drive motor, one end of which is connected to a water tank containing water, the middle part being wrapped around a heater, and the other end being open to the outside. A hot water supply pipe, a timer motor that controls energization of the drive motor and the heater, and a rotor that rotates in conjunction with the rotation shaft of the timer motor and faces the opening of the hot water supply pipe to vary the direction of hot water output. In the initial stage of energization of the heater after energization to the drive motor is cut off, hot water is supplied to the water tank side, and then hot water is switched to the mill case side,
The coffee boiler is characterized in that the rotation of the rotor is controlled by the rotary shaft of the timer motor so that hot water is further switched to the water tank side, and then switched again to the mill case side for continuous hot water supply.