JP6358898B2 - Beverage production equipment - Google Patents

Description

The present invention relates to a beverage production apparatus provided with a grinder that grinds an object to be ground to obtain a powder.

  2. Description of the Related Art Conventionally, as a means for pulverizing objects to be crushed, such as tea leaves and grains, a grinder having a pulverizing part such as a mortar has been used. In the grinder, powder is obtained by finely grinding the object to be ground between the grinding members arranged opposite to each other along the vertical direction. Examples of documents disclosing such a grinding machine include JP 2013-39206 A (Patent Document 1) and JP 2004-17010 A (Patent Document 2).

  In the grinding machine disclosed in Patent Literature 1, the powder generated by the pulverization unit that pulverizes the object to be pulverized is defined by an annular passage that is arranged so as to cover the entire outer peripheral surface of the pulverization unit. It is discharged to the powder delivery path. The powder discharged to the powder delivery path is discharged to the outside by moving the movable part of the collection / discharge section that collects and discharges the powder to the outside. The grinding machine includes a driving unit that drives the pulverizing unit and the movable unit, and a grounding unit that grounds a passage wall made of a conductive material, and charges on the passage wall and the pulverizing unit that are charged by the grounding unit are removed.

  In the grinding machine disclosed in Patent Document 2, the receiving surface on which the powder discharged from between the pulverized surfaces of the upper die and the lower die is formed over the entire circumference of the upper end of the die, and the lower die A discharge port is provided in a part of the circumferential direction in the upper part of the. By rotating the upper die, the powder placed on the receiving surface of the upper die is discharged from the discharge port. Thereby, since the powder on the receiving surface can be discharged without using a spatula member made of synthetic resin, charging of static electricity can be suppressed.

JP2013-39206A JP 2004-17010 A

  However, in the configuration disclosed in Patent Document 1, the grounding means includes a motor case of a motor included in the driving means, a passage wall, a connection member that secures conduction between the motor case and the passage wall, and a motor. Since it is constituted by the ground wire connected to the case, the structure becomes complicated.

  In the grinding machine disclosed in Patent Document 2, since it is not necessary to scrape and discharge the powder using a synthetic resin spatula, the generation of static electricity can be suppressed in this respect, but the mortar is rotated. Static electricity generated by the rotation of the reduction gear group or the like is transmitted to the die side. As a result, the die was charged, and the adhesion of the powder into the apparatus could not be sufficiently suppressed.

The present invention has been made in view of the above problems, an object of the present invention, while having a simple structure, enough can be Ru beverage production device to suppress the charging of the device due to static electricity Is to provide.

A beverage production apparatus according to the present invention is provided in a device main body, a drive unit for generating a driving force , housed in the device main body, and a part protruding from the device main body, A driving force transmission mechanism for transmitting the driving force generated by the driving unit; and a grinding unit attached to a portion of the driving force transmission mechanism that protrudes from the apparatus main body. The unit includes a rotation mechanism for relatively rotating the upper die and the lower die, and the drive force transmission mechanism connects the drive unit and the rotation mechanism and transmits the drive force to the rotation mechanism. A power transmission unit is included, and at least a part of the power transmission unit includes an antistatic member. The drive force transmission mechanism is provided so as to penetrate the rotation shaft connected to the rotation mechanism and the device main body, and a part of the drive unit is exposed inside the device main body and the device main body And a surrounding member that surrounds the power transmission unit such that a part of the rotating shaft is exposed outside the unit. The enclosure member includes an antistatic member.

In the beverage production apparatus according to the present invention, it is preferable that the grinding unit further includes a housing that accommodates the upper die and the lower die therein. In this case, it is preferable that the housing comes into contact with the enclosure member when the rotation mechanism and the driving force transmission mechanism are connected.

In the beverage production apparatus according to the present invention, the housing preferably includes an antistatic member.

Beverage production device according to the present invention further comprises a tank for storing liquids, powder and the liquid obtained by the above powder ground unit is supplied, the stirring tank for mixing the said powder and the liquid, the .

According to the present invention, it is possible to provide a beverage production device while having a simple structure, Ru can be sufficiently suppress charging of the device due to static electricity.

1 is an overall perspective view of a beverage production apparatus that includes a crusher according to Embodiment 1. FIG. FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1. It is a whole perspective view which shows the schematic component of the drink manufacturing apparatus shown in FIG. It is a figure which shows the 1st manufacturing flow which shows the tea discharge using the drink manufacturing apparatus shown in FIG. It is a figure which shows the 2nd manufacturing flow which shows the tea discharge using the drink manufacturing apparatus shown in FIG. It is a figure which shows the 3rd manufacturing flow which shows the tea discharge using the drink manufacturing apparatus shown in FIG. It is a perspective view which shows the internal structure of the drink manufacturing apparatus shown in FIG. It is a perspective view of the ground unit provided in the drink manufacturing apparatus shown in FIG. It is a disassembled perspective view of the grinding unit shown in FIG. It is a longitudinal cross-sectional view of the grinding unit shown in FIG. It is a disassembled perspective view of the stirring unit comprised by the drink manufacturing apparatus shown in FIG. It is a longitudinal cross-sectional view of the stirring unit shown in FIG. FIG. 3 is an exploded perspective sectional view taken along line XIII-XIII shown in FIG. 1. It is a perspective sectional view which followed the XIV-XIV line shown in FIG. It is a figure for demonstrating the place which used the antistatic member in the verification experiment conducted in order to verify the effect of this invention. It is a figure which shows the result of the verification experiment performed in order to verify the effect of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following embodiments, the same or common parts are denoted by the same reference numerals in the drawings, and description thereof will not be repeated.

(Embodiment 1)
(Beverage production device 1)
With reference to FIG. 1 to FIG. 3, a beverage manufacturing apparatus 1 in the present embodiment will be described. 1 is an overall perspective view of the beverage production apparatus 1, FIG. 2 is a sectional view taken along the line II-II in FIG. 1, and FIG. 3 is an overall perspective view showing schematic components of the beverage production apparatus 1.

  The beverage production apparatus 1 uses tea leaves as an object to be crushed, and pulverizes the tea leaves to obtain tea leaf powder. Tea is produced as a beverage using the obtained tea leaf powder. The beverage production apparatus 1 includes an apparatus main body 100 as a beverage production apparatus main body, a grinder 2 (see FIG. 14), a stirring unit 500, a liquid storage tank 700, a liquid supply path 155 (see FIG. 2), and a powder receiver. The tea powder receiving tray 800 and the mounting base 900 are provided.

  The grinding machine 2 is mainly generated by a grinding unit 300 that grinds an object to be ground, a grinding motor unit 120 (see FIG. 7) as a drive unit for generating a driving force, and a grinding motor unit 120. And a grinding driving force transmission mechanism 130 as a driving force transmission mechanism for transmitting the driving force.

  The mounting base 900 is provided so as to protrude forward in the lower front side of the apparatus main body 100, and a cup (not shown) and the tea leaf powder tray 800 can be mounted thereon. The tea leaf powder tray 800 is provided so that a user can hold and move it. Tea leaf powder tray 800 is made of a flame-retardant resin member such as ABS resin.

(Grinding unit 300)
The grinding unit 300 is detachably mounted on a grinding unit mounting portion 180 (see FIG. 3) provided on the front side of the apparatus main body 100. The grinding unit 300 is arranged away from the stirring tank 510 so as not to overlap the stirring tank 510 below the stirring tank 510 included in the stirring unit 500 when viewed from the front, for example.

  A part of the grinding driving force transmission mechanism 130 (see FIG. 3) is provided on the grinding unit mounting portion 180 so as to protrude forward from the front surface of the apparatus main body 100. The grinding unit 300 is detachably mounted on a portion of the grinding driving force transmission mechanism 130 that protrudes from the front surface of the apparatus main body 100. The grinding unit 300 is connected to the grinding driving force transmission mechanism 130 to obtain a driving force for grinding tea leaves that are objects to be ground.

  The tea leaves charged into the inside of the grinding unit 300 from the upper part of the grinding unit 300 are finely crushed inside the grinding unit 300. The crushed tea leaves are dropped and collected as tea leaf powder in a tea leaf powder receiving tray 800 placed below the grinding unit 300. The detailed structure of the grinding unit 300 will be described later with reference to FIGS.

(Liquid storage tank 700)
The liquid storage tank 700 is detachably mounted on a liquid storage tank mounting portion 195 provided on the upper surface side of the apparatus main body 100. The liquid storage tank 700 includes a tank main body 710 having an upper surface opening and a lid 720 that closes the upper surface opening of the tank main body 710. The liquid storage tank 700 stores liquid such as water.

(Liquid supply path 155)
The liquid supply path 155 is accommodated in the apparatus main body 100. The liquid supply path 155 is connected to the liquid storage tank 700 (see FIG. 7). A supply port 171 is provided in the liquid supply path 155 on the side opposite to the side where the liquid storage tank 700 is connected. Liquid supply path 155 includes hot water supply pipe 150 and hot water supply nozzle 170. One end of hot water supply pipe 150 is connected to liquid storage tank 700, and the other end is connected to hot water supply nozzle 170. The liquid introduced from the liquid storage tank 700 into the liquid supply path 155 is supplied to the stirring unit 500 through the hot water supply pipe 150 and the hot water supply nozzle 170.

(Stirring unit 500)
The stirring unit 500 includes a stirring blade 550 that stirs the liquid and the powder, and a stirring tank 510 that houses the stirring blade 550. The stirring tank 510 is detachably mounted on a stirring tank mounting portion 190 (see FIG. 3) provided on the front side of the apparatus main body 100. The stirring tank 510 is mounted on the stirring tank mounting portion 190 so as to protrude from the apparatus main body 100 in a direction crossing the vertical direction. Specifically, the stirring tank 510 is attached so that a part of the stirring tank 510 protrudes forward from the front surface of the apparatus main body 100.

  The stirring tank mounting portion 190 is provided with a stirring motor non-contact table 140A. The stirring unit 500 is placed on the stirring motor non-contact table 140A. The stirring blade 550 provided in the stirring unit 500 is rotated by the stirring motor unit 140 housed in the apparatus main body 100 and the magnet 141 connected thereto so as to be positioned below the stirring motor non-contact table 140A. .

  A hot water supply nozzle 170 is provided above the stirring tank mounting portion 190 of the apparatus main body 100. Inside the apparatus main body 100, the water in the hot water supply pipe 150 is raised to a predetermined temperature, and hot water is supplied from the hot water supply nozzle 170 into the stirring tank 510. In the stirring tank 510, hot water created in the apparatus main body 100 and the tea leaf powder obtained by the grinding unit 300 are charged, and the hot water and the tea leaf powder are stirred by the stirring blade 550 in the stirring tank 510. The Thereby, tea is manufactured in the stirring tank 510.

  The tea produced in the stirring unit 500 is transferred to a cup (not shown) mounted on the mounting base 900 by operating the operation lever 542 of the discharge opening / closing mechanism 540 provided below the stirring unit 500. Can pour tea. The detailed structure of the stirring unit 500 will be described later with reference to FIGS. 11 and 12.

(Manufacturing flow of tea (beverage))
Next, a tea (beverage) production flow using the beverage production apparatus 1 will be described with reference to FIGS. 4 to 6 are diagrams showing first to third production flows showing tea discharge using the beverage production apparatus 1. Note that a predetermined amount of tea leaves is charged into the grinding unit 300, and a predetermined amount of water is stored in the liquid storage tank 700.

(First production flow)
The first manufacturing flow will be described with reference to FIG. This first production flow is a flow in which tea leaves are pulverized in the grinding unit 300 and hot water is supplied from the apparatus main body 100 to the stirring unit 500 at the same time.

  In the beverage production apparatus 1, tea leaf grinding by the grinding unit 300 in step 11 and hot water supply from the apparatus main body 100 to the stirring unit 500 in step 13 are started simultaneously. Next, in step 12, the grinding of tea leaves by the grinding unit 300 is finished, and the hot water supply from the apparatus main body 100 to the stirring unit 500 in step 14 is finished.

  In step 15, the tea leaf powder obtained in step 12 is put into the stirring unit 500 by the user.

  Next, in step 16, stirring of the tea leaf powder and hot water in the stirring unit 500 is started. In step 17, the stirring of the tea leaf powder and hot water in the stirring unit 500 is completed. In step 18, the user discharges tea to the cup placed on the placement base 900 by operating the operation lever 542 of the discharge port opening / closing mechanism 540 provided below the stirring unit 500. .

(Second production flow)
The second manufacturing flow will be described with reference to FIG. This second manufacturing flow is a flow in which hot water is supplied from the apparatus main body 100 to the stirring unit 500 after the tea leaves in the grinding unit 300 are crushed.

  In step 21, the beverage production apparatus 1 starts the grinding of tea leaves by the grinding unit 300. In step 22, the grinding of tea leaves by the grinding unit 300 is completed. In step 23, the tea leaf powder obtained in step 22 is put into the stirring unit 500 by the user.

  In step 24, hot water supply from the apparatus main body 100 to the stirring unit 500 is started. In step 25, the hot water supply from the apparatus main body 100 to the stirring unit 500 is completed.

  Next, in step 26, stirring of the tea leaf powder and hot water in the stirring unit 500 is started. In step 27, stirring of the tea leaf powder and hot water in the stirring unit 500 ends. In step 28, the user operates the operation lever 542 of the discharge port opening / closing mechanism 540 provided below the stirring unit 500, thereby discharging tea to the cup placed on the placement base 900. .

(Third manufacturing flow)
The third manufacturing flow will be described with reference to FIG. This third manufacturing flow includes a step of cooling hot water by stirring in the stirring unit 500.

  In the beverage production apparatus 1, tea leaf grinding by the grinding unit 300 in step 31 and hot water supply from the apparatus main body 100 to the stirring unit 500 in step 33 are started simultaneously. The hot water supply from the apparatus main body 100 to the stirring unit 500 in step 34 is completed.

  Next, in step 32, the grinding of tea leaves by the grinding unit 300 is completed, and in step 35, the stirring unit 500 starts cooling and stirring the hot water supply. In step 36, the cooling and stirring of the hot water supply is completed in the stirring unit 500.

  In step 37, the tea powder obtained in step 32 is put into the stirring unit 500 by the user.

  Next, in step 38, stirring of the tea leaf powder and hot water in the stirring unit 500 is started. In step 39, stirring of the tea leaf powder and hot water in the stirring unit 500 ends. In step 40, the user operates the operation lever 542 of the discharge port opening / closing mechanism 540 provided below the stirring unit 500 to discharge tea to the cup placed on the placement base 900. .

(Internal structure of apparatus main body 100)
Next, the internal structure of the beverage manufacturing apparatus 1 will be described with reference to FIG. FIG. 7 is a perspective view showing the internal structure of the beverage manufacturing apparatus 1. In the apparatus main body 100 of the beverage manufacturing apparatus 1, a control unit 110 using a printed wiring board on which electronic components are mounted is disposed on the front side of the liquid storage tank 700. The tea production flow is executed by the control unit 110 based on the input of the start signal by the user.

  A grinding motor unit 120 for applying a driving force to the grinding unit 300 is disposed below the control unit 110. A grinding driving force transmission mechanism 130 for transmitting the driving force of the grinding motor unit 120 to the grinding unit 300 is provided below the grinding motor unit 120 so as to protrude forward. Yes.

  One end of a hot water supply pipe 150 that extends downward from the bottom surface and extends upward in a U shape is connected to the bottom surface of the liquid storage tank 700. A hot water supply nozzle 170 for pouring hot water into the stirring tank 510 of the stirring unit 500 is connected to the other end of the hot water supply pipe 150. A U-shaped heater 160 for heating water passing through the hot water supply pipe 150 is attached to an intermediate region of the hot water supply pipe 150. The water heated by the heater 160 becomes hot water and is supplied to the stirring tank 510.

(Structure of the grinding unit 300)
Next, the structure of the grinding unit 300 will be described with reference to FIGS. 8 is a perspective view of the grinding unit 300, FIG. 9 is an exploded perspective view of the grinding unit 300, and FIG. 10 is a longitudinal sectional view of the grinding unit 300.

  The grinding unit 300 includes an upper mortar 360 and a lower mortar 350 that pulverize an object to be pulverized, a rotation support member 340 to which the lower mortar 350 is attached, and a housing 310 that accommodates these members. Inside the housing 310, a rotation support member 340, a lower mortar 350, and an upper mortar 360 are arranged in this order from below. The rotation support member 340 is made of a flame retardant resin member such as ABS resin. Lower mill 350 and upper mill 360 are made of ceramics (alumina), for example.

  The housing 310 has a cylindrical shape as a whole. The casing 310 is made of a flame retardant resin member such as ABS resin. The casing 310 is provided so that a part of the peripheral surface located on the lower side is recessed, thereby defining an insertion region 300W for inserting a part of the grinding driving force transmission mechanism 130. A step portion is formed on the lower side of the housing 310.

  The housing 310 includes a storage unit 311 (see FIG. 10) that stores the tea leaf powder generated by the upper mortar 360 and the lower mortar 350, and a discharge path 312 for discharging the tea leaf powder. The upper end side of the discharge path 312 is connected to the storage unit 311, and a discharge port 312 a is provided on the lower end side of the discharge path 312. Note that the lower end of the discharge path 312 is the lowermost end of the housing 310. The tea leaf powder is discharged toward the tea leaf powder tray 800 from the discharge port 312a.

  Moreover, the housing | casing 310 has the flat plate part 313 which forms a level | step difference part. The flat plate portion 313 is provided with an annular upright wall 314 and a connecting hole portion 315. A rotation shaft 137 (see FIG. 14), which will be described later, is inserted into the coupling hole 315 provided in the flat plate portion 313.

  The annular upright wall 314 is provided to stand upward. The standing wall 314 is provided so as to have a predetermined radius around the central axis of the housing 310. A rotation support member 340 is disposed inside the standing wall 314, and a storage portion 311 and a discharge path 312 are disposed outside the standing wall 314.

  The reservoir 311 is provided so as to surround a part of the outer periphery of the standing wall 314 and is provided so as to be positioned around the rotation support member 340. The storage unit 311 is provided so as to be positioned below the outer edges of the lower mortar 350 and the upper mortar 360. Thereby, the tea leaf powder discharged from the outer edges of the lower mill 350 and the upper mill 360 can be received by the storage unit 311.

  The discharge path 312 is provided so as to surround the remaining part of the outer periphery of the upright wall 314 (part not surrounded by the storage part 311). As a result, the discharge path 312 is connected to the storage unit 311. The discharge path 312 is provided so as to extend downward from the flat plate portion 313. The discharge path 312 has a substantially C-shaped cylindrical shape in plan view.

  A discharge port 312a of the discharge path 312 is provided to be positioned below an opening 513 of a heat retaining tank 512 (see FIG. 12) described later. Thereby, the steam generated from the hot water supplied into the heat retaining tank 512 can be prevented from entering from the discharge port 312a.

  The rotation support member 340 supports the lower die 350 from the side opposite to the side where the upper die 360 is located (the lower side of the lower die 350). The rotation support member 340 includes a substantially cylindrical main body 341, an engagement protrusion 342, a powder scraping portion 343, and a connecting portion 345.

  The engaging protrusion 342 is provided on the upper surface of the main body 341 and protrudes upward. The engaging protrusion 342 is a part for locking the lower mortar 350. The engagement protrusion 342 has a cylindrical shape.

  The powder scraping part 343 is provided outside the peripheral surface of the main body part 341. The powder scraping portion 343 is provided so as to extend downward from a protruding portion protruding in the radial direction from the upper surface of the main body portion 341. The powder scraping unit 343 scrapes the tea leaf powder stored in the storage unit 311 and conveys it to the discharge path 312 when the rotation support member 340 rotates around the axis C.

  The connecting portion 345 is provided on the lower side of the rotation support member 340. Specifically, the main body 341 is provided so as to extend downward from the lower surface of the main body 341. The connecting portion 345 has a cylindrical shape with the axis C as the central axis. The inner diameter of the connecting portion 345 is smaller than the outer diameter of the main body portion 341. The connecting part 345 is a part that is connected to the grinding driving force transmission mechanism 130. Specifically, one end 137a side of a rotating shaft 137 (see FIG. 14), which will be described later, is inserted into the connecting portion 345 through the connecting hole 315. Thereby, the driving force generated by the grinding motor unit 120 is transmitted to the rotation support member 340 via the grinding driving force transmission mechanism 130. As a result, the rotation support member 340 rotates together with the lower die 350 while supporting the lower die 350. Thus, the rotation support member 340 functions as a rotation mechanism for relatively rotating the upper die 360 and the lower die 350.

  Lower mill 350 connects main surface 350a arranged to face main surface 360a of upper mill 360, main surface 350b located on the opposite side of main surface 350a, main surface 350a, and main surface 350b. Including the peripheral surface. A plurality of shear grooves are formed on the main surface 350 a of the lower die 350. The plurality of shear grooves are provided, for example, so as to extend along an equiangular spiral. Further, the plurality of shear grooves may be configured by providing linear grooves formed radially from the inner peripheral side to the outer peripheral side.

  An engagement recess 352 is provided on the main surface 350 b of the lower die 350. The engagement recess 352 is provided at a position corresponding to the engagement protrusion 342 of the rotation support member 340 and is locked to the engagement protrusion 342. The lower die 350 rotates integrally with the rotation support member 340. A core 359 extending upward along the rotation axis is provided at the center of the lower die 350.

  The core 359 is provided so as to penetrate the through hole 361 provided in the central portion of the upper mill 360. The core 359 has a blade portion 359a provided in a spiral shape.

  Upper mill 360 connects main surface 360a arranged to face main surface 350a of lower mill 350, main surface 360b located on the opposite side to main surface 360a, main surface 360a, and main surface 360b. Including the peripheral surface. A shear groove is formed on the main surface 360a of the upper die 360 in the same manner as the main surface 350a of the lower die.

  The upper die 360 is held by an upper die holding member 370 disposed above the upper die 360. For example, a hole (not shown) is provided on the upper surface of the upper die 360, and a pin portion (not shown) provided in the upper die holding member 370 enters the hole to prevent the upper die 360 from rotating. Is done.

  The upper mortar holding member 370 is erected from the bottom surface portion 371 having the hole portion 371a, the outer cylinder portion 372 erected upward from the periphery of the bottom surface portion 371, and the rim portion of the hole portion 371a upward. Inner cylinder part 373. The hole 371a is provided so as to communicate with the through hole 361 of the upper mill 360. Between the outer cylinder part 372 and the inner cylinder part 373, a spring 381 and a spring holding member 380 that press the upper die 360 downward are housed. The crushing pressure acting between the upper die 360 and the lower die 350 is adjusted by the spring 381.

  A hopper 320 for supplying the object to be pulverized between the upper die 360 and the lower die 350 is attached to the upper end opening 310 b side of the housing 310. The hopper part 320 includes a top plate part 321, a cylindrical part 322, and a grinding object input port 325. The top plate portion 321 has a bowl shape in which an opening 323 is provided in a substantially central portion. The cylindrical portion 322 is provided so as to stand downward from the periphery of the opening 323. The cylindrical part 322 is inserted inside the inner cylindrical part 373.

  The object to be crushed 325 is defined by the opening 323 and the cylindrical part 322. The tip side of the core 359 is accommodated in the object to be crushed 325. A plurality of linear ribs 391, 392 and 393 are provided in the cylindrical portion 322 so as to straddle the object to be crushed 325. Thereby, it is possible to prevent the user's finger from entering the object to be crushed 325.

  When crushing tea leaves, the hopper 320 is preferably covered with a cover 330. Accordingly, it is possible to prevent foreign matter from entering the grinding unit 300 after the tea leaves are input to the object to be crushed 325 and to prevent the crushed tea leaves from being scattered. Note that the cover portion 330 is removed from the hopper portion 320 when the tea leaves are introduced.

  The tea leaves thrown into the grinding object throwing opening 325 are accommodated in a space defined by the upper surface of the upper mill 360 exposed from the upper mill holding member 370 and the inner peripheral surface of the cylindrical portion 322. The tea leaves accommodated in the space are guided between the upper mortar 360 and the lower mortar 350 as the spiral blade portion 359a rotates as the lower mortar 350 rotates.

  The tea leaves guided between the upper mortar 360 and the lower mortar 350 are crushed and fall downward from the periphery of the upper mortar 360 and the lower mortar 350 as tea leaf powder. Part of the fallen tea leaf powder is discharged to the tea leaf powder tray 800 from the discharge port 312a through the discharge path 312. The other part of the fallen tea leaf powder is stored in the storage unit 311. The tea leaf powder in the storage unit 311 is transported to the discharge path 312 and discharged from the discharge port 312a to the tea leaf powder tray 800 when the powder scraping unit 343 rotates as the rotation support member 340 rotates.

  When the tea leaves are crushed, static electricity is generated by rotation of a plurality of gears included in the grinding driving force transmission mechanism 130 when the driving force is transmitted to the grinding motor unit 120 to the grinding motor unit 120. In the present embodiment, by using an antistatic member as a part of the grinding driving force transmission mechanism 130, the static electricity can be released. Thereby, it can suppress that the tea ground powder charges the grinding unit 300. The configuration of such a grinding driving force transmission mechanism 130 will be described later with reference to FIGS. 13 and 14.

(Structure of stirring unit 500)
Next, the structure of the stirring unit 500 will be described with reference to FIGS. 11 and 12. FIG. 11 is an exploded perspective view of the stirring unit 500, and FIG. 12 is a longitudinal sectional view of the stirring unit 500.

  The stirring unit 500 includes a stirring tank 510, a stirring blade 550, and a stirring cover 530. The agitation tank 510 includes a resin exterior holder 511, a heat retaining tank 512 held by the exterior holder 511, and an opening 513. The exterior holder 511 is provided with a grip 520 that is integrally formed of resin. The heat retaining tank 512 has a bottomed cylindrical shape and has an opening 513 that opens upward.

  The stirring cover 530 covers the opening 513 so that it can be opened and closed. The stirring cover 530 is provided with a powder inlet 531 for charging the tea leaf powder crushed by the grinding unit 300 and a hot water outlet 532 through which hot water formed in the apparatus main body 100 is poured from the hot water nozzle 170. Yes. The hot water supply port 532 is provided at a position corresponding to the supply port 171 of the hot water supply nozzle 170.

  The powder charging port 531 and the hot water supply port 532 communicate with the opening 513. The tea leaf powder charged into the powder charging port 531 from the moved tea leaf powder tray 800 is charged into the stirring vessel 510 through the opening 513. Hot water poured from the hot water supply nozzle 170 into the hot water supply port 532 is supplied into the stirring tank 510 through the opening 513.

  A stirring blade 550 is placed on the bottom of the stirring tank 510. A rotating shaft 560 that extends upward is provided at the bottom of the stirring tank 510, and the bearing portion 551 of the stirring blade 550 is inserted into the rotating shaft 560.

  A magnet 552 is embedded in the stirring blade 550. In the agitation motor non-contact table 140A, the magnet 552 embedded in the agitation blade 550 and the magnet 141 provided on the agitation motor unit 140 side are magnetically coupled in a non-contact state, thereby rotating the agitation motor unit 140. The force is transmitted to the stirring blade 550.

  The agitation tank 510 further includes a discharge unit 545 for discharging the generated beverage. The discharge part 545 is provided in the stirring tank 510 in a part protruding from the apparatus main body 100. The discharge unit 545 includes a discharge port 541 provided at the bottom of the stirring tank 510 and a discharge port opening / closing mechanism 540 that opens and closes the discharge port 541. The discharge port 541 is a part for discharging tea produced by stirring the tea leaf powder and hot water with the stirring blade 550.

  The discharge port opening / closing mechanism 540 includes an open / close nozzle 543 inserted into the discharge port 541 and an operation lever 542 for controlling the position of the open / close nozzle 543 so that the discharge port 541 can be opened and closed. The opening / closing nozzle 543 is biased so as to close the discharge port 541 by a biasing member (not shown) such as a spring in a normal state. When the user moves the operation lever 542 against the urging force, the open / close nozzle 543 moves and the discharge port 541 is opened. Thereby, the tea in the stirring tank 510 is poured out into a cup (not shown) placed on the placement base 900.

(Device main body 100 and grinding driving force transmission mechanism 130)
With reference to FIG. 13 and FIG. 14, the apparatus main body 100 and the grinding driving force transmission mechanism 130 will be described. 13 is an exploded perspective sectional view taken along line XIII-XIII shown in FIG. FIG. 14 is a perspective sectional view taken along line XIV-XIV.

  The apparatus main body 100 includes a front panel 101, a center frame 102, and a back panel 103. The front panel 101 has a grinding unit mounting part 180 and an engaging protrusion 101a. The grinding unit mounting portion 180 is formed when a part of the front panel 101 is recessed backward. The grinding unit mounting portion 180 is provided with a through hole through which a part of the grinding driving force transmission mechanism 130 passes. The engagement protrusion 101a is provided on both end sides (left and right end portions in the figure) of the front panel. The engagement protrusion 101a is provided so as to protrude rearward from the main surface located on the rear side of the front panel.

  The central frame 102 has openings 102a and 102b on the front side and the back side. The center frame 102 has a rectangular tube shape having a rectangular shape with rounded corners when viewed from the front. A control unit 110, a grinding driving force transmission mechanism 130, a liquid supply path 155, and the like are attached to the central frame 102. Further, the central frame 102 is provided with a partition wall 102c that partitions a portion for storing the liquid storage tank 700 and a portion for storing the control unit 110 and the grinding driving force transmission mechanism 130.

  The back panel 103 has a notch 103c and an engaged portion 103a. The notch 103 c is provided on the upper end side of the back panel 103. The notch 103c constitutes the liquid storage tank mounting part 195 together with the partition wall 102c. The engaged portion 103 a is provided so as to protrude forward from the front main surface of the back panel 103. The engaged portion 103 a is provided at a position corresponding to the engaging protrusion 101 a of the front panel 101. The engaged portion 103a is provided with an engagement hole inside. By inserting the engaging projection 101a into the engaging hole, the engaging projection 101a and the engaged portion 103a are engaged.

  With the control unit 110, the grinding driving force transmission mechanism 130, the liquid supply path 155, etc. attached to the central frame 102, the back panel 103 is attached so as to close the opening on the back of the central frame 102, The front panel 101 is attached so as to close the opening on the front surface of the central frame 102. At this time, the front side of the grinding driving force transmission mechanism 130 is inserted into the through hole of the grinding unit mounting portion 180. Thereby, while the front side (front side part 130a) of the grinding drive force transmission mechanism 130 protrudes ahead from the apparatus main body 100, the back side (rear side part 130b) of the grinding drive force transmission mechanism 130 is the apparatus. Housed in the main body 100.

  The insertion region 300W of the grinding unit 300 is fitted from substantially above into the grinding driving force transmission mechanism 130 protruding from the apparatus main body 100. At this time, the positioning concave portion 316 provided in the housing 310 is fitted into the positioning convex portion 130 c of the grinding driving force transmission mechanism 130. Thereby, alignment with the connection part 345 of the lower mortar support member 340 mentioned above and the rotating shaft 137 mentioned later is performed, and the grinding unit 300 and the grinding drive force transmission mechanism 130 can be connected easily.

  The positioning convex part 130c is a part of a housing case 138 as an enclosing member to be described later. As described above, when the rotary shaft 137 and the connecting portion 345 are connected, the grinding unit 300 and the grinding drive are configured so that the specific portion of the housing 310 and the specific portion of the housing case 138 are in contact with each other. The force transmission mechanism 130 can be easily connected.

  The grinding driving force transmission mechanism 130 includes a power transmission unit 131 and a storage case 138 as an enclosure member. The power transmission part 131 mechanically connects the output shaft 122 of the grinding motor unit 120 and the connecting part 345 of the lower mortar support member 340. As a result, the power transmission unit 131 transmits the driving force generated by the grinding motor unit 120 to the lower mortar support member 340. Further, the power transmission unit 131 is rotatably supported by a support member, and is electrically connected to the housing case 138 via the support member.

  The power transmission unit 131 mechanically connects the first fixed gear 132 fixed to the output shaft 122, the second fixed gear 136 fixed to the rotating shaft 137, and the first fixed gear 132 and the second fixed gear 136. Intermediate gears 133, 134, 135 to be connected and a rotating shaft 137 are included. Further, the power transmission unit 131 includes a support member such as a gear bearing that rotatably supports these gears.

  The housing case 138 houses a part of the grinding motor unit 120 and most of the power transmission unit 131. Part of the grinding motor unit 120 is accommodated on the rear side of the accommodation case 138. The grinding motor unit 120 is configured to include a motor 121 and an output shaft 122, and a part of the motor 121 and the output shaft 122 are accommodated on the rear side of the accommodating case 138.

  A part of the rotating shaft 137 is accommodated on the front side of the accommodation case 138. The rotation shaft 137 rotates around the central axis. The central axis of the rotation shaft 137 is parallel to the direction (vertical direction) in which the upper mill 360 and the lower mill 350 are aligned, and coincides with the axis C shown in FIG.

  The rotating shaft 137 is housed in the housing case 138 so that the upper end 137a side protrudes upward from the housing case 138. Thereby, when the grinding unit 300 is mounted on the grinding driving force transmission mechanism 130, the upper end 137 a side of the rotation shaft 137 can be inserted into the connecting portion 345 of the rotation support member 340. The lower end 137 b side of the rotating shaft 137 is housed in the housing case 138.

  When the output shaft 122 of the grinding motor unit 120 rotates at a predetermined rotational speed based on the input signal from the control unit 110, the first fixed gear 132 fixed thereto rotates. In conjunction with the rotation of the first fixed gear 132, the intermediate gears 133, 134, and 135 rotate, so that the second fixed gear 136 is also rotated. As a result, the rotation shaft 137 to which the second fixed gear 136 is fixed rotates, and the rotation support member 340 connected to the rotation shaft 137 rotates about the axis. As a result, the rotation support member 340 and the lower mortar 350 rotate together, and the tea leaves are crushed between the upper mortar 360 and the lower mortar 350.

  When the tea leaves are crushed, the first fixed gear 132, the intermediate gears 133, 134, 135, and the second fixed gear 136 rotate while meshing with each other, so that the grinding driving force transmission mechanism 130 has other parts of the grinding machine 2 Compared to, static electricity is more likely to occur.

  Here, in the present embodiment, at least one of the first fixed gear 132, the intermediate gears 133, 134, 135, the second fixed gear 136, the rotating shaft 137, and the above-described gear bearing and the like is an antistatic member. It is comprised so that it may contain. Note that the phrase “configured to include an antistatic member” includes the case where the entire member is composed of an antistatic member and the case where a part of the member is composed of a charging member.

As the antistatic member, a metal material or a surface specific resistance of 1.0 × 10 ⁹ [Ω / sq. ] 1.0 × 10 ¹⁴ [Ω / sq. A resin member having the following values can be used. Specifically, Toyolac Parrel (registered trademark) can be employed as the resin member.

  Static electricity generated by the rotation of the gear in the power transmission unit 131 is discharged into the air from a portion of the power transmission unit 131 including the antistatic member. Thereby, it is possible to prevent static electricity generated in the housing case 138 from moving to the grinding unit 300 via the rotating shaft 137 and to suppress charging of the device due to static electricity. Thereby, it is possible to prevent the tea leaf powder from adhering to the grinding unit 300.

  As described above, in the grinder 2 and the beverage manufacturing apparatus 1 including the grinder 2 according to the present embodiment, at least a part of the power transmission unit 131 that is a part of the parts constituting the grinder 2 is an antistatic member. In addition, the device can be sufficiently prevented from being charged by static electricity.

  In addition, since the storage case 138 in the standard state of the product in this embodiment is covered with the grinding unit 300 and the tea leaf powder tray 800, both are made to be a flame retardant member to suppress charging and It becomes possible to cover an outer surface with a flame-retardant member. In general, molding a member having an antistatic and flame-retardant function is more costly than a member having only one of the functions. However, with this configuration, an equivalent function can be obtained as a whole product. It is possible to keep costs down.

  Note that the housing case 138 also preferably includes the above-described antistatic member. In this case, even when static electricity generated in the power transmission unit 131 moves to the housing case 138 side, the static electricity can be discharged into the air from the portion constituted by the antistatic member. As a result, it is possible to further prevent static electricity generated in the housing case 138 from moving toward the grinding unit 300 via the rotating shaft 137 and to further suppress charging of the device due to static electricity. Thereby, it is possible to further prevent the tea leaf powder from adhering in the grinding unit 300.

(Embodiment 2)
Compared with the grinding machine 2 according to the first embodiment, the grinding machine according to the present embodiment is such that the powder scraping portion 343 is configured by an antistatic member instead of the flame-retardant resin member. Is different. Other configurations are almost the same.

The rotation support member 340 including the powder scraping portion 343 is also preferably formed of an antistatic member, and the rotation support member 340 has a surface specific resistance of, for example, 1.0 × 10 ⁹ [Ω / sq. ] 1.0 × 10 ¹⁴ [Ω / sq. In the case of a resin member having the following values, the main body portion 341 and the powder scraping portion 343 are preferably formed integrally by injection molding.

  In addition, when the powder scraping part 343 is comprised with a metal member or the above-mentioned resin member, and the main-body part 341 of the rotation support member 340 is comprised with a flame-retardant resin member, the powder scraping part 343 is welded, bonded, etc. May be fixed to the main body 341.

  The powder scraping unit 343 scrapes the tea leaf powder stored in the storage unit 311 while sliding on the main surface of the storage unit 311 and conveys it to the discharge path 312. The static electricity generated by this sliding is discharged into the air from the powder scraping portion 343, so that charging of the powder scraping portion 343 can be suppressed. Thereby, it can suppress that a tea leaf powder adheres to the powder scraping part 343. FIG.

  Thus, in the present embodiment, the device is charged by static electricity with a simple configuration in which the housing case 138 and the powder scraping portion 343, which are part of the parts constituting the grinder, are configured with antistatic members. It can be sufficiently suppressed.

(Embodiment 3)
Compared with the grinder 2 according to the first embodiment, the grinder according to the present embodiment is such that the tea leaf powder tray 800 is constituted by an antistatic member instead of the flame-retardant resin member. Is different. Other configurations are almost the same.

  In this case, even when the tea leaf powder is charged in the grinding unit 300, the charge of the tea leaf powder can be released to the tea leaf powder tray 800 and discharged from the tea leaf powder tray 800 into the air. Thereby, it can suppress that tea leaf powder aggregates or adheres to the tea leaf powder tray 800.

  Thus, in the present embodiment, the charging of the device due to static electricity is sufficiently performed by a simple configuration in which the housing case 138 and the tea leaf powder tray 800 which are part of the components constituting the device are configured by the antistatic member. Can be suppressed.

(Embodiment 4)
The grinder according to the present embodiment is different from the grinder 2 according to the first embodiment in that the case 310 of the grinder unit 300 is configured by an antistatic member. Other configurations are almost the same.

  In this case, static electricity generated when the powder scraping unit 343 slides on the main surface of the storage unit 311 and scrapes the tea leaf powder stored in the storage unit 311 and transports it to the discharge path 312 is generated in the housing 310. Can be discharged into the air. As a result, charging on the housing 310 side can be suppressed, and the tea leaf powder can be prevented from adhering to the storage portion 311 and the like.

  As described above, in the present embodiment, the housing case 138 and the housing 310, which are part of the parts constituting the grinder, are configured by an antistatic member, so that the device is sufficiently charged by static electricity. Can be suppressed.

  FIG. 15 is a diagram for explaining a place where an antistatic member is used in a verification experiment performed to verify the effect of the present invention. FIG. 16 is a diagram showing the results of a verification experiment performed to verify the effect of the present invention. With reference to FIG. 15 and FIG. 16, the verification experiment performed about each Example and the comparative example is demonstrated.

  As shown in FIGS. 15 and 16, as a verification experiment, the grinding machine according to Examples 1 and 2, the grinding machine in Reference Examples 1 to 3, and the grinding machine in Comparative Example 1 were continuously operated for 15 minutes. Later, the antistatic property was evaluated. As an evaluation of antistatic properties, among the powders generated by a grinder, the amount of powder attached to the casing 310 and the like without being collected in the tea leaf powder tray 800 was measured. The smaller the amount of adhesion, the better the antistatic property, and those that exhibited excellent antistatic properties were evaluated as “excellent”, while those that exhibited a slight amount of antistatic properties were “good”. Those that did not exhibit antistatic properties were judged as “impossible”.

Example 1
As the grinding machine according to Example 1, the grinding machine according to Embodiment 1 was used. In this case, a gear bearing that is a part of the power transmission unit 138 and rotatably supports the second fixed gear 136 is configured by an antistatic member. Specifically, a metal bearing was adopted as the gear bearing. In this case, the adhesion amount was 0.3 g, and the evaluation of antistatic property was determined to be “excellent”.

(Example 2)
As a grinding machine according to the second embodiment, a grinding machine in which the housing case 138 is configured by an antistatic member instead of the power transmission unit 131 is used. In this case, the adhesion amount was 0.3 g, and the evaluation of antistatic property was determined to be “excellent”.

(Reference Example 1)
As the grinding machine in Reference Example 1, a grinding machine in which the casing 310 of the grinding unit 300, not the power transmission unit 131, was configured with an antistatic member was used. In this case, the adhesion amount was 1.2 g, and the evaluation of the antistatic property was determined as “possible”.

(Reference Example 2)
As the milling machine in Reference Example 2, a milling machine in which the powder scraping unit 343 of the milling unit 300 was configured with an antistatic member instead of the power transmission unit 131 was used. In this case, the adhesion amount was 1.2 g, and the evaluation of the antistatic property was determined as “possible”.

(Reference Example 3)
As the grinding machine in Reference Example 3, a grinding machine in which the tea leaf powder tray 800, not the power transmission unit 131, was configured with an antistatic member was used. In this case, the adhesion amount was 1.2 g, and the evaluation of the antistatic property was determined as “possible”.

(Comparative Example 1)
As the grinder in Comparative Example 1, a grinder that did not use an antistatic member in any part of the grinder was used. In this case, the adhesion amount was 1.5 g, and the evaluation of the antistatic property was determined as “impossible”.

(Experimental results and discussion)
In Comparative Example 1, the amount of adhesion increased because the antistatic member was not used in any part. The result of Example 1, the results of Reference Examples 1 to 3 and the result of Comparative Example 1 are compared. In Example 1, the amount of adhesion is considerably reduced. The transmission unit 131 is considered. It is considered that an antistatic function was effectively exhibited by using an antistatic member for the power transmission unit 131.

  In Example 2, an excellent antistatic function was exhibited as in Example 1. By configuring the storage case 138 to include an antistatic member, in addition to reducing the adhesion of tea leaf powder to the storage case 138, it is possible to reduce the adhesion of the grinding unit 300 to the housing 310 and the like. It was. Since the housing case 138 comes into contact with a support member such as a gear bearing included in the power transmission unit 131, the static electricity generated in the power transmission unit 131 is moved to the housing case 138 side, and this is configured by an antistatic member. This is considered to have been able to effectively discharge into the air from the part.

  As described above, by configuring at least a part of the power transmission unit 131 that is a part of the parts constituting the grinder 2 to include the antistatic member, the device can be sufficiently charged by static electricity with a simple configuration. It can be said that it was proved experimentally that it can be suppressed.

  In the above-described first embodiment, the case where the power transmission unit 131 is configured to include the antistatic member has been described as an example. However, the present invention is not limited to this, and a storage case is used instead of the power transmission unit 131. 138 may be configured to include an antistatic member. Since the storage case 138 comes into contact with the support member of the power transmission unit 131, the static electricity generated in the power transmission unit 131 is moved to the storage case 138 side, and the static electricity is transferred from the portion constituted by the antistatic member into the air. Can be discharged. As a result, it is possible to prevent static electricity generated in the storage case 138 from moving to the grinding unit 300 side, and to suppress charging of the device due to static electricity. Thereby, it is possible to prevent the tea leaf powder from adhering to the grinding unit 300.

  In the first to fourth embodiments described above, a metal plate may be separately installed inside the apparatus main body 100 and the metal plate and the housing case 138 may be electrically connected. In this case, static electricity can be moved toward the metal plate. Thereby, since the amount of static electricity that moves to the grinding unit 300 side can be further reduced, charging of the device due to static electricity can be suppressed.

  In the first to fourth embodiments described above, the case where the enclosing member is the housing case 138 has been described as an example. However, the present invention is not limited to this, and protection provided so as to cover the outer surface of the housing case 138. It may be a case.

  In the first to fourth embodiments described above, the case where the grinding unit 300 is detachably attached to the grinding driving force transmission mechanism 130 has been described as an example. However, the present invention is not limited to this. 300 may be attached to the grinding driving force transmission mechanism 130 and integrated with the grinding driving force transmission mechanism 130 by an adhesive member, a locking member, a fastening member, or the like.

  Furthermore, combining the respective characteristic portions in the above-described first to fourth embodiments as appropriate is planned from the beginning unless otherwise specified. Specifically, at least one of the characteristic portions described in the second to fourth embodiments may be applied to the grinder according to the first embodiment. Moreover, such a grinder can be appropriately mounted on the beverage production apparatus according to Embodiment 1.

  Although the embodiments and examples of the present invention have been described above, the embodiments and examples disclosed this time are illustrative and not restrictive in all respects. The scope of the present invention is defined by the terms of the claims, and includes meanings equivalent to the terms of the claims and all modifications within the scope.

  DESCRIPTION OF SYMBOLS 1 Beverage manufacturing apparatus, 2 ground grinder, 100 apparatus main body, 101 front panel, 101a engaging protrusion, 102 center frame, 102a, 102b opening part, 102c partition wall, 103 back panel, 103a engaged part, 103c cutting Notch part, 110 control unit, 120 grinding motor unit, 121 motor, 122 output shaft, 130 grinding driving force transmission mechanism, 130a front side part, 130b rear side part, 130c positioning convex part, 131 power transmission part, 132 first 1 fixed gear, 133, 134, 135 intermediate gear, 136 second fixed gear, 137 rotating shaft, 138 housing case, 140 stirring motor unit, 140A stirring motor non-contact table, 141 magnet, 150 hot water supply pipe, 155 liquid supply path, 160 heater, 170 hot water supply nozzle, 171 Supply port, 180 grinding unit mounting part, 190 stirring tank mounting part, 195 liquid storage tank mounting part, 300 grinding unit, 300W insertion area, 310 housing, 310b upper end opening, 311 storage part, 312 discharge path, 312a Discharge port, 313 flat plate portion, 314 standing wall, 315 connecting hole portion, 316 positioning recess, 320 hopper portion, 321 top plate portion, 322 cylindrical portion, 323 opening portion, 325 grinding object input port, 330 cover portion, 340 Rotation support member, 341 Main body part, 342 Engagement projection part, 343 Powder scraping part, 345 Connection part, 350 Lower die, 350a, 350b Main surface, 350c Peripheral surface, 352 Engaging recess, 359 Core, 359a Blade part, 360 upper die, 360a, 360b main surface, 360c peripheral surface, 361 through hole, 37 Upper mill holding member, 371 bottom surface portion, 371a hole portion, 372 outer cylinder portion, 373 inner cylinder portion, 380 spring holding member, 381 spring, 391, 392, 393 rib, 500 stirring unit, 510 stirring tank, 511 exterior holder, 512 heat retaining tank, 513 opening, 520 grip, 530 stirring cover, 531 powder inlet, 532 hot water inlet, 540 outlet opening / closing mechanism, 541 outlet, 542 operation lever, 543 opening / closing nozzle, 545 outlet, 550 stirring blade, 551 Bearing portion, 552 magnet, 560 rotation shaft, 700 liquid storage tank, 710 tank body, 720 lid portion, 800 tea leaf powder tray, 900 mounting base.

Claims (4)

The device body,
A drive unit that is housed in the apparatus main body and generates a drive force;
A driving force transmission mechanism provided so as to partially protrude from the apparatus main body, and for transmitting the driving force generated by the driving unit;
A grinding unit attached to the driving force transmission mechanism of the portion protruding from the apparatus main body ,
With
The grinding unit includes a rotation mechanism for rotating the upper die and the lower die relatively,
The driving force transmission mechanism includes a power transmission unit that connects the driving unit and the rotation mechanism and transmits the driving force to the rotation mechanism.
At least a portion of the power transmission portion is viewed contains an antistatic member,
The drive force transmission mechanism is provided so as to penetrate the rotation shaft connected to the rotation mechanism and the apparatus main body, and a part of the drive unit is exposed inside the apparatus main body, and the apparatus main body An enclosure member surrounding the power transmission unit so that a part of the rotating shaft is exposed outside the unit;
The said enclosure member is a drink manufacturing apparatus containing an antistatic member. The grinding unit further includes a housing that accommodates the upper die and the lower die inside,
Wherein when the rotating mechanism and said driving force transmission mechanism is connected, wherein the housing is in contact with the enclosure member, the beverage production device according to claim 1. The beverage manufacturing apparatus according to claim 2 , wherein the casing includes an antistatic member. A tank for storing the liquid body,
The beverage production according to any one of claims 1 to 3 , further comprising: an agitation tank in which the powder obtained by the grinding unit and the liquid are supplied and the powder and the liquid are mixed. apparatus.

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