JP2019030437A5 - - Google Patents

Description

Each canister 40 is provided with a conveyor 41 individually. The conveyor 41 is a delivery mechanism (conveyance mechanism) that automatically delivers a predetermined amount of roasted coffee beans contained in the canister 40 to the downstream side. The conveyor 41 of this embodiment is a screw conveyor that uses a motor 41a as a drive source, and is a weighing unit that automatically weighs roasted coffee beans. The amount of roasted coffee beans delivered can be controlled by the amount of rotation of the motor 41a (the amount of rotation of the screw). Each of the conveyors 41 discharges the roasted coffee beans to the collecting and conveying path 42 on the downstream side. Collection conveying path 42 is constituted by a middle empty member includes a charging port 42a of each conveyor 41, and a common outlet 42b, roasted coffee beans supplied from the common outlet 42b to the crushing device 5 To be done.

Incidentally, roasted coffee beans supplied to the input port 50a is not from above of the rotating blades 58a, may be provided to such a height hits the side surface. In that case, since the rotary blade 58a suppresses the roasted coffee beans from escaping to the upper side, the suppression plate 56a may not be provided.

The separation chamber forming unit 64 has a discharge port 66 communicating with the separation chamber SC, through which ground beans after separating unnecessary substances are discharged. In the case of the present embodiment, the discharge port 66 is located below the opening portion 65b, and the ground beans that have passed through the tubular portion 65 pass through the separation chamber SC and fall freely from the discharge port 66. In the case of the present embodiment, the discharge port 66 is a circular opening located on the center line CL, and is an opening that is concentric with the openings 65a and 65b. Therefore, the ground beans easily pass through the separation chamber forming portion 64 by free fall, and it is possible to prevent the ground beans from being accumulated in the separation chamber forming portion 64.

The pair of shaft members 820b are rods extending in the front-rear direction, and are members that support the holding member 820a. Although the number of the shaft members 820b is two in the present embodiment, it may be one or three or more. The holding member 820a is fixed to the front ends of the pair of shaft members 820b. By a mechanism described later, the pair of shaft members 82 0 b are moved forward and backward, the holding member 820a is moved forward and backward, and the container main body 90 can be moved in parallel in the forward and backward directions. The middle unit 8B can also perform a turning operation to turn the extraction container 9 upside down, as described later.

Both the neck portion 90b and the body portion 90e have a cylindrical shape. In the neck portion 90b, a region having the same sectional area or sectional shape of the internal space extends in the vertical direction. Further, the body portion 90e also has a region having the same cross-sectional area or cross-sectional shape extending in the vertical direction, and is longer than the neck portion 90b. The trunk 90e has a larger cross-sectional area than the neck 90b. The ratio of the cross-sectional area of the neck portion 90b to the body portion 90e is, for example, 65% or less, 50% or less, or 35% or less, and, for example, 10% or more, or 20% or more. The shoulder portion 90d is a portion between the neck portion 90b and the body portion 90e, and has a tapered shape such that the cross-sectional area of the internal space thereof gradually decreases from the body portion 90e side toward the neck portion 90b side. ing. However, the neck portion 90 b is only with the description on the name for a position closer to the opening 90a than the bottom 90f, the cross-sectional area of the necessarily interior space that is larger barrel 90e than the neck portion 90b The neck portion 90a may be a part of the body portion 90e without limitation. That is, the extraction container 9 does not have to have a shape having a constricted portion as shown in FIG. It may have a different shape.

On the outer side (lower side) of the bottom member 901, a coil spring 905 and a cylindrical spring receiver 906 are attached to the shaft 903a, and an E ring 907 engages with the end of the shaft 903a. The coil spring 905 and the spring receiver 906 are held between the bottom member 901 and the E ring 907, and the coil spring 905 biases the plug member 903 in the closing direction. The protrusion 901c is provided with seal member 908, seal member 908 is a member for maintaining the space between the upper unit 8A or the lower unit 8 C and the bottom member 901 airtight.

On the outer side (upper side) of the base member 911, a coil spring 915 and a cylindrical spring receiver 916 are attached to the shaft 913a, and an E ring 917 engages with the end of the shaft 913a. The coil spring 915 and the spring receiver 916 are held between the base member 911 and the E ring 917, and the coil spring 915 biases the plug member 913 in the closing direction. A seal member 918a and a ring spring 918b are provided on the convex portion 911d. Sealing member 918a is a member for maintaining the space between the upper unit 8A or the lower unit 8 C and the base member 911 hermetically. The ring spring 918b is an engaging member for holding the lid unit 91 on the upper unit 8A when the lid unit 91 is opened.

An engagement portion 801d is formed on the inner wall of the housing portion 801b, the engagement portion 801d protruding inward in the radial direction. A ring spring 918 b of the engaging portion 801d and the lid unit 91 by engagement, the lid unit 91 is held by the holding member 801. When certain level of force to separate the holding member 801 and the cover unit 91 in the vertical direction is applied, by elastic deformation of the ring spring 918 b, the engagement between the engaging portion 801d and the ring spring 918 b is released. As a result, the lid unit 91 and the holding member 801 are separated.

The elevating shaft 802 is a tubular shaft having a through hole in its center axis, and the probe 803 is vertically slidably inserted into this through hole. The probe 803 penetrates the top of the holding member 801 in the vertical direction, and is provided so as to be vertically movable with respect to the support member 800 and the holding member 801. The holding member 801 is a seal member 801e is provided in a portion of the hole probe 803 passes through, the slide of the probe 803 also airtightness of the accommodating portion 801b is maintained.

The housing portion 811b inner wall, the engaging portion 8 1 1d is formed a raised radially inwardly. A ring spring 918 b of the engaging portion 811d and the lid unit 91 by engagement, the lid unit 91 is held by the holding member 811. When certain level of force to separate the holding member 811 and the cover unit 91 in the vertical direction is applied, by elastic deformation of the ring spring 918 b, the engagement between the engaging portion 811d and the ring spring 918 b is released. As a result, the lid unit 91 and the holding member 811 are separated.

The lifting shaft 812 is provided so that its axial direction is the vertical direction. The elevating shaft 812 penetrates the bottom portion of the support member 8 10 in the vertical direction and is provided so as to be vertically movable with respect to the support member 810. The support member 810 is provided with a seal member 810c in a hole portion through which the elevating shaft 812 passes, so that the airtightness inside the housing portion 810b is maintained even while the elevating shaft 812 is sliding.

When the engaging portion 801d of the holding member 801 and the ring spring 918b of the lid unit 91 are in the engaged state, and when the holding member 801 is raised from the lowered position to the raised position, the pair of gripping members 821a is in the opened state. The lid unit 91 is separated from the container body 90. Conversely, when the pair of gripping members 821a is in the closed state, the engagement between the engaging portion 801d and the ring spring 918b is released, and only the holding member 801 moves up.

The extraction device 3 is in the state shown in FIG. The extraction container 9 is in an upright posture and is located at the extraction position. The lock mechanism 821 is in the closed state, and the lid unit 91 closes the opening 90a of the container body 90. The holding member 801 is in the lowered position and is attached to the convex portion 911d. The holding member 811 is in the raised position and is attached to the convex portion 901c. The plug members 903 and 913 are in the closed state. Switching valve 10a is communicating with the waste tank T and communicating portion 810a of the operation unit 8 1 C. The standby state is not limited to the state shown in FIG. 10, and for example, the extraction container 9 is in the upright posture and located at the extraction position, the lock mechanism 821 is in the open state, and the lid unit 91 is in the opening of the container body 90. 90a may be opened.

The solenoid valve 72i is opened for a predetermined time (for example, 1500 ms) and then closed. As a result, hot water is poured into the extraction container 9 from the water tank 72. Subsequently closed after the opening by the solenoid valve 73 b for a predetermined time (e.g. 500 ms). As a result, the air in the extraction container 9 is pressurized, and the discharge of hot water to the waste tank T is promoted. By the above processing, the inside of the extraction container 9 and the pipe L2 are preheated, and it is possible to reduce the cooling of the hot water in the subsequent production of the coffee beverage.

The inside of the extraction container 9 is rapidly depressurized to a pressure lower than the boiling point pressure, and the hot water in the extraction container 9 is boiled all at once. Hot water and ground beans in the extraction container 9 explosively scatter in the extraction container 9. Thereby, the hot water can be boiled uniformly. Further, it is possible to promote the destruction of the cell wall of ground beans and further accelerate the subsequent extraction of coffee liquid. Moreover, since the ground beans and hot water can be stirred by this boiling, extraction of the coffee liquid can be promoted. Thus, in this embodiment, the extraction efficiency of coffee liquid can be improved. By opening the release valve (73 c), the pressure of the extraction container 9 are rapid decompression. The rapid depressurization may be, for example, depressurizing at a rate at which one of a bumping state and a state close to bumping occurs, and specifically, the atmospheric pressure in the extraction container 9 is a vapor pressure (saturated steam pressure, equilibrium). It may be the vapor pressure, etc.) and decompress at a rate such that it falls to a pressure lower than that, or suddenly boil the liquid in the extraction container 9 (for example, hot water or a mixture of hot water and coffee liquid) at a temperature above the boiling point. The pressure may be reduced at any speed. It may be possible to destroy cells of ground beans or to mix ground beans with hot water by bumping (for example, a phenomenon in which a liquid that has not boiled (eg, hot water) suddenly boils at a temperature above the boiling point) ..

Further, since the hot water and the ground beans are stirred when the extraction container 9 is inverted, the extraction efficiency of the coffee liquid can be further improved. In this embodiment, since the shoulder portion 90d is formed between the body portion 90e and the neck portion 90b, when reversing, the ground beans can be smoothly moved to the neck portion 90b from the body portion 90 e ..

In S23, the plug member 903 is opened. Switching valve 10a is communicating with the waste tank T and communicating portion 810a of the operation unit 8 1 C. As a result, the pipe L3, the extraction container 9, and the waste tank T are in communication with each other. The electromagnetic valve 73b is opened and closed for a predetermined time (for example, 1000 ms). As a result, the inside of the extraction container 9 is pressurized, and the water in the extraction container 9 is discharged to the waste tank T together with the residue of ground beans. After that, the plug members 903 and 913 are closed, and the process ends.

As a result, the notch 408d is separated from the claw portion 406a, and the engagement between the two is released. The outlet opening/closing portion 408 is allowed to rotate with respect to the outlet forming portion 405 around the central axis of the tubular portion 401. In the state ST 12 of FIG. 33, the outlet 405a is in the closed state, but by rotating the outlet opening/closing portion 408, the outlet 405a can be opened.

The drive shaft 46 is provided with a gear 45b that meshes with a pinion gear 45a provided on the output shaft of the motor 41a, and is rotated by driving the motor 41a. A one-way clutch 445c is interposed between the drive shaft 46 and the bevel gear 445b. The one-way clutch 445c transmits only rotation of the drive shaft 46 in one direction to the bevel gear 445b. That is, when the motor 41a is rotated in one direction, the driving force of the motor 41a is transmitted to the rotating member 444 through the path of the bevel gear 445b, the bevel gear 445a, and the drive shaft 445. Is not transmitted when it rotates in the opposite direction.

FIG. 38 is a vertical sectional view including the peripheral structure of the canister 40 mounted on the mounting portion 44. The structure of the second example is basically the same as that of the first example, but an elastically deforming portion 405d is formed on the peripheral wall of the outlet forming portion 405 at the peripheral edge of the outlet 405a. The elastic deformation portion 405 d is a peripheral wall portion formed by putting a parallel slits in the outlet forming portion 405 from the periphery of the outlet 405a, thereby being configured easily deformed than the site of the surrounding. The function of the elastic deformation portion 405d will be described later.