CN114340453B

CN114340453B - Beverage supply device

Info

Publication number: CN114340453B
Application number: CN202080061378.6A
Authority: CN
Inventors: 小椋朝香
Original assignee: Fuji Electric Co Ltd
Current assignee: Fuji Electric Co Ltd
Priority date: 2020-01-10
Filing date: 2020-11-25
Publication date: 2024-04-12
Anticipated expiration: 2040-11-25
Also published as: WO2021140769A1; KR102668603B1; JP7443773B2; CN114340453A; JP2021108964A; KR20220038120A

Abstract

There is provided a beverage supply apparatus comprising: an extractor (37) for extracting the beverage; and a paper roll unit (375) for discharging filter Paper (PF) used for extracting the beverage by the extractor (37) from the Filter Roll (FR) each time the beverage is extracted, wherein the paper roll unit (375) comprises: a drive roller (3751) that is connected to the common rotation shaft (3751 a) so as to face the inner surfaces of the drive roller and the rotation shaft; and driven rollers (3752) which are provided at positions below the driving roller (3751) so as to face each other with the inner surfaces thereof facing each other, wherein part of the 2 nd tooth portion (3752 b 1) is engaged with part of the 1 st tooth portion (3751 b) of the driving roller (3751) and clamps the filter Paper (PF), the driven rollers (3752) rotate with rotation of the driving roller (3751), and outer peripheral holes (3752 b 2) are formed between the 2 nd tooth portions (3752 b 1) so as to face the housing portions (3752 a) of the housing shaft portions (376).

Description

Beverage supply device

Technical Field

The present invention relates to a beverage supply apparatus.

Background

Conventionally, as a beverage supply apparatus, a beverage supply apparatus including an extractor, a storage unit, a paper roll unit, and a storage box is known.

The extractor is disposed inside the device body and is used for extracting beverage from hot water and crushed raw materials. The storage unit rotatably supports and stores a filter roller around which filter paper used in extraction of a beverage by an extractor is wound. The paper roll part clamps the filter paper drawn from the filter roll in a form passing between a cylinder and a filter assembly constituting the extractor, and discharges the filter paper from the filter roll every time beverage is extracted. The storage box stores extraction residues generated during extraction of the beverage by the extractor, filter paper used for extracting the beverage, and waste liquid used for cleaning the extractor.

In such a beverage supply apparatus, a beverage extracted by an extractor is supplied to a cup (for example, refer to patent document 1).

Prior patent literature

Patent literature

Patent document 1: japanese patent laid-open No. 2006-190238

Disclosure of Invention

Problems to be solved by the invention

The paper roller section of the beverage supply device includes a driving roller and a driven roller. The driving roller is a pair of right and left disk-shaped rollers coupled to a common rotation shaft with inner surfaces thereof facing each other, and teeth protruding radially outward are formed on outer peripheral portions thereof. The driving roller rotates around the center axis of the rotation shaft by a driving force from a driving source such as a motor.

The driven rollers are a pair of left and right disk-shaped rollers provided below the drive roller so as to face each other with their inner surfaces facing each other and separated from each other. The driven roller rotates around its central axis in accordance with the rotation of the driving roller by partially engaging the teeth of the driving roller with the teeth of the corresponding driving roller and sandwiching the filter paper.

In such a paper roll section, since the driven roll is disposed below the driving roll so as to face the driven roll, a part of the extracted dregs is deposited between the teeth of the driven roll, and the length of the filter paper sandwiched between the teeth of the driven roll and the teeth of the driving roll is reduced, and as a result, the amount of feed of the filter paper is reduced.

In view of the above-described circumstances, an object of the present invention is to provide a beverage supply apparatus capable of suppressing a decrease in the amount of filter paper fed.

Solution for solving the problem

In order to achieve the above object, a beverage supply apparatus according to the present invention includes: an extractor to which hot water and crushed raw materials are added, thereby extracting a beverage; a storage unit that rotatably supports and stores a filter roller around which filter paper used for extracting a beverage by the extractor is wound; and a paper roll section that holds the filter paper drawn by the filter roll and discharges the filter paper from the filter roll each time beverage is extracted, wherein the beverage supply device supplies the beverage extracted by the extractor to a cup, and the paper roll section includes: a pair of left and right driving rollers coupled to a common rotation shaft so as to face each other on inner surfaces thereof, each of the driving rollers having teeth protruding radially outward on an outer peripheral portion thereof, the driving rollers being rotated about a central axis of the rotation shaft by a driving force from a driving source; and a pair of left and right driven rollers provided below the drive roller so as to face each other with their inner surfaces facing each other, the driven rollers being provided with holes between the teeth so as to face the housing portion housing the shaft portion constituting the central axis, the teeth being formed so that the teeth protrude radially outward in the outer peripheral portion partially engage with the teeth of the corresponding drive roller and sandwich the filter paper therebetween, thereby rotating around the central axis of the driven rollers with rotation of the drive roller.

In addition to the above beverage supply apparatus, the driven roller is formed with an inclined peripheral surface portion inclined so as to be gradually closer to the central axis toward the inside of the housing portion, and the hole is formed so as to face the inclined peripheral surface portion.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, a paper roll section includes: a pair of left and right driving rollers coupled to the common rotation shaft so that inner surfaces thereof face each other, each of the driving rollers having a tooth portion formed on an outer peripheral portion thereof so as to protrude radially outward, the driving rollers being rotated about a central axis of the rotation shaft by a driving force from a driving source; and a pair of left and right driven rollers provided at a position below the drive rollers so as to face each other with their inner surfaces facing each other, wherein portions of the teeth formed on the outer peripheral portions so as to protrude radially outward engage with portions of the teeth of the corresponding drive rollers and sandwich the filter paper, so that the driven rollers rotate about their own central axes in accordance with rotation of the drive rollers, and holes are formed between the teeth so as to face the housing portions housing the shaft portions constituting the central axes.

Drawings

Fig. 1 is a perspective view showing an external configuration of a beverage supply apparatus according to an embodiment of the present invention.

Fig. 2 is a schematic diagram schematically showing components of the beverage supply apparatus according to the embodiment of the present invention.

Fig. 3 is a perspective view showing the extractor shown in fig. 2 and its peripheral structure.

Fig. 4 is a perspective view showing an enlarged main part of the extractor shown in fig. 2.

Fig. 5 is a perspective view showing a main portion of the paper roller section shown in fig. 3 and 4.

Fig. 6 is a perspective view showing a cross section of the driven roller shown in fig. 5.

Fig. 7 is a longitudinal sectional view of the paper roller section shown in fig. 3 and 4.

Fig. 8 is a perspective view showing the storage tub shown in fig. 2.

Fig. 9 is an exploded perspective view showing the storage tub shown in fig. 8.

Fig. 10 is a longitudinal sectional view of the accommodating tub shown in fig. 8.

Fig. 11 is a schematic diagram showing a sequence of beverage supply by the control unit shown in fig. 2.

Fig. 12 is a schematic diagram showing a sequence of beverage supply by the control unit shown in fig. 2.

Fig. 13 is a schematic diagram showing a sequence of beverage supply by the control unit shown in fig. 2.

Fig. 14 is a schematic view showing a sequence of beverage supply by the control unit shown in fig. 2.

Fig. 15 is a schematic view showing a sequence of beverage supply by the control unit shown in fig. 2.

Detailed Description

Preferred embodiments of the beverage supplying apparatus according to the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 and 2 show a beverage supply apparatus according to an embodiment of the present invention, respectively, fig. 1 is a perspective view showing an external configuration, and fig. 2 is a schematic view schematically showing each constituent element.

The beverage supply apparatus illustrated here is a coffee machine installed in a store such as a convenience store, for example, and supplies a beverage such as coffee to a cup C serving as a container by performing extraction processing on coffee bean powder and drip. Such a beverage supply apparatus includes an apparatus body 1.

The apparatus main body 1 is configured to include a main body cabinet 10 and a front surface door 20. The main body cabinet 10 has a substantially rectangular parallelepiped shape with an opening (hereinafter also referred to as a front surface opening) on the front surface (not shown). A control unit 60 and a beverage generation unit 30 for generating a beverage (e.g., coffee) are provided in the main body cabinet 10.

The front surface door 20 is a door body having a size sufficient to close the front surface opening of the main body cabinet 10. The front door 20 is provided at a left edge portion of the front side of the main body cabinet 10 so as to be swingable about a central axis of a shaft portion, not shown, extending in the up-down direction, and is capable of opening and closing a front opening of the main body cabinet 10.

The front surface of the front door 20 constitutes a receiving surface, and is provided with a display 21, a beverage supply 22, and an opening/closing door 23.

The display unit 21 is constituted by, for example, a liquid crystal touch panel, displays various information in accordance with instructions supplied from the control unit 60, and is capable of performing input operations such as touch operations. When an input operation such as a touch operation is performed, the display unit 21 transmits a sales signal to the control unit 60.

The beverage supply unit 22 is provided at a position below the display unit 21, and has a mounting table 22a. The placement table 22a is provided with a circular arc-shaped stopper, not shown, for placing the cup C.

The opening/closing door 23 is made of a translucent material such as a transparent resin, and has a size sufficient to cover the beverage supply unit 22. The left end of the opening/closing door 23 is pivotally supported by the front door 20 and can swing in the front-rear direction. That is, the opening/closing door 23 can swing in the front-rear direction so as to approach and separate from the beverage supply unit 22, and can close the beverage supply unit 22 when swinging backward so as to approach the beverage supply unit 22, and can open the beverage supply unit 22 when swinging forward so as to separate from the beverage supply unit 22.

The beverage forming unit 30 is described. The beverage producing unit 30 includes a raw material tank 31, a pulverizer 33, a hot water supply unit 35, an extractor 37, a storage tub 39, a pressurized air supply line 41, a drain line 43, and a nozzle 45.

The raw material box 31 is provided to receive roasted coffee beans as a beverage raw material and partially protrudes upward from the top plate 12 of the main body cabinet 10. The raw material tank 31 is provided with a raw material supply driving unit 311. The raw material supply driving section 311 is driven when a driving instruction is supplied from the control section 60. The raw material supply driving unit 311 discharges a predetermined amount of coffee beans included in the driving command.

The crusher 33 is a machine called a so-called mill, and is driven with a drive instruction provided from the control portion 60. The pulverizer 33 is provided in a lower region of the raw material tank 31, and is connected to the raw material tank 31 via a raw material chute 32.

The above-mentioned pulverizer 33 is driven to pulverize the coffee beans discharged from the raw material tank 31 and guided by the raw material chute 32, and inputs the pulverized coffee beans (hereinafter also referred to as coffee pulverized beans) to the extractor 37 through the powder chute 34. The powder chute 34 is configured such that each component is integrated with resin.

The hot water supply unit 35 is configured to supply hot water to the extractor 37, and a hot water tank 351, a constant delivery pump 352, an auxiliary tank 353, a hot water pump 354, and a check valve 355 are connected in this order to a hot water supply line 356 constituted by a hot water supply pipe.

The hot water tank 351 is configured to heat water such as tap water supplied from a water supply unit, not shown, by a heater 351a and store the heated water as hot water. The constant delivery pump 352 is driven in accordance with a command supplied from the control unit 60, and when driven, the self-heating water tank 351 delivers a constant amount of hot water to the auxiliary tank 353. The auxiliary tank 353 has a smaller volume than the hot water tank 351 and temporarily stores the hot water supplied from the constant delivery pump 352. The hot water pump 354 is driven in accordance with a command supplied from the control unit 60, and when driven, pressurizes hot water in the auxiliary tank 353 and feeds the hot water to the extractor 37. The delivery amount of the hot water pump 354 is made larger than the delivery amount of the constant delivery pump 352. The check valve 355 is a valve element that allows the hot water fed from the hot water pump 354 to pass toward the extractor 37 but restricts the hot water from passing from the extractor 37 toward the auxiliary tank 353. The check valve 355 is disposed in a state of being thermally connected to the hot water tank 351, which is not explicitly shown in the drawings.

The extractor 37 is a machine called a so-called extraction unit for extracting coffee from the coffee ground beans fed from the grinder 33 via the powder chute 34 and the hot water supplied from the hot water supply unit 35.

A beverage supply line 38 is connected to such extractor 37. The beverage supply line 38 is constituted by a single beverage supply pipe or by connecting a plurality of beverage supply pipes, and supplies the coffee extracted by the extractor 37 to the nozzle 45.

A1 st pinch valve 381 is provided in the middle of the beverage supply line 38. The 1 st pinch valve 381 is opened and closed in response to a command supplied from the control unit 60, and allows fluid to pass when the valve is in an opened state, and restricts fluid to pass when the valve is in a closed state.

The extractor 37 includes a cylinder 371, a cover 372, and a filter assembly 373. The cylinder 371 has a substantially cylindrical shape and is detachable from the main body cabinet 10. The cylinder 371 is formed to have a smaller diameter in which the outer diameter and the inner diameter are reduced as compared with the conventional cylinder, and the diameter of the lower surface opening is set to be, for example, 60mm to 61 mm.

The cover 372 is moved in a state of approaching and separating from the upper surface opening of the cylinder 371 by a driving mechanism 372a such as a motor in accordance with a command supplied from the control unit 60, and opens and closes the upper surface opening of the cylinder 371. The cover 372 has a hole for allowing the coffee beans supplied from the powder chute 34 to be poured into the cylinder 371 and a hole for allowing the hot water supplied from the hot water supply unit 35 to be poured into the cylinder 371, which are not explicitly shown in the figure.

The filter assembly 373 is provided in a lower region of the cylinder 371, and is connected to the beverage supply line 38. The filter assembly 373 is driven by the assembly motor 373a in response to a command supplied from the control unit 60, and is moved in the up-down direction in a state of approaching and separating from the cylinder 371.

As shown in fig. 3 and 4, the filter assembly 373 includes a paper roller 375, a1 st cutter 377, and a2 nd cutter 379.

The paper roller 375 holds the filter paper PF drawn from the filter roller FR rotatably supported and accommodated in the filter accommodating portion 47 and guided by the guide roller GR. Here, the filter roll FR winds the filter paper PF. That is, the filter housing 47 rotatably supports and houses the filter roller FR around which the filter paper PF used when extracting the beverage by the extractor 37 is wound.

As shown in fig. 4 and 5, such a paper roller section 375 is configured to include a driving roller 3751 and a driven roller 3752.

The driving roller 3751 is a pair of left and right disk-shaped rollers coupled to the common rotation shaft 3751a so as to face each other on the inner surface thereof. The drive roller 3751 has a1 st tooth 3751b formed on an outer peripheral portion thereof so as to protrude radially outward. When a roller motor 3753 is connected to the driving roller 3751 as a driving source and an operation command is given from the control unit 60 to the roller motor 3753, the driving roller 3751 rotates around the central axis of the rotation shaft 3751a by transmitting a driving force from the roller motor 3753.

The driven roller 3752 is a pair of left and right rollers provided below the drive roller 3751 so as to face each other with the inner surfaces thereof facing each other. As further shown in fig. 6, the driven roller 3752 includes a housing 3752a and an outer peripheral portion 3752b.

The housing 3752a has a substantially cylindrical shape provided in a central region of the driven roller 3752. The housing 3752a houses the shaft 376 by inserting the shaft 376, which is provided in the filter unit 373 and serves as the center axis of the driven roller 3752, into the hollow 3752a 1. The housing 3752a has an inclined peripheral surface 3752a2 inclined so as to be gradually closer to the central axis (shaft 376) toward the inside.

The outer peripheral portion 3752b is formed in an outer peripheral region of the housing portion 3752a so as to surround the housing portion 3752 a. More specifically, the outer peripheral portion 3752b is an annular portion formed around the outer peripheral region of the housing portion 3752a by a circular plate-shaped portion 3752c and a radial portion 3752d, the circular plate-shaped portion 3752c extending radially outward from the outer portion of the housing portion 3752a, and the radial portion 3752d extending radially outward from the inclined peripheral portion 3752a2 of the housing portion 3752 a. The outer peripheral portion 3752b is formed with a2 nd tooth portion 3752b1 protruding radially outward, and the protruding length of the 2 nd tooth portion 3752b1 toward the radially outward is set to be, for example, about 3.5mm to 4.5 mm. Further, an outer peripheral hole 3752b2 is formed between the 2 nd teeth 3752b1 of the outer peripheral portion 3752b.

That is, in the driven roller 3752, an inclined peripheral surface portion 3752a2 inclined so as to gradually approach the center axis toward the inside is formed in the housing portion 3752a housing the shaft portion 376 constituting the center axis, and an outer peripheral hole 3752b2 is formed between the 2 nd tooth portions 3752b1 so as to face the inclined peripheral surface portion 3752a2.

As shown in fig. 7, such a driven roller 3752 rotates around its central axis in accordance with the rotation of the driving roller 3751 by partially engaging the 2 nd tooth portion 3752b1 with the 1 st tooth portion 3751b of the corresponding driving roller 3751 and sandwiching the filter paper PF.

The 1 st cutter 377 is provided at a position below the paper roller 375, and cuts the filter paper PF. The 1 st cutter portion 377 has a blade portion 377a for cutting the filter paper PF at a lower end edge portion, and is a portion extending in the vertical direction.

The 2 nd cutter 379 is provided at a position on the rear side of the paper roll 375, and cuts the filter paper PF. The 2 nd cutter 379 has a blade 379a for cutting the filter paper PF at an upper edge.

When the filter paper PF drawn from the filter roller FR is placed on a predetermined path so as to pass between the cylinder 371 and the filter block 373, the filter block 373 discharges the filter paper PF from the filter roller FR by the rotation of the paper roller 375. That is, the paper roller 375 allows the discharge operation of the filter paper PF from the filter roller FR.

Fig. 8 is a perspective view showing the housing tub 39 shown in fig. 2. As shown in fig. 3, a housing tub 39 is provided in a lower region of the extractor 37, and houses the filter paper PF and extraction residue K (see fig. 7 and 15) generated by extraction of the beverage by the extractor 37.

As shown in fig. 10, the housing tub 39 illustrated here is configured to include an outer case 391 and an inner case 392. The outer case 391 has a bottomed tubular shape. The inner case 392 has a bottomed tubular shape, and has a size that can be inserted into the outer case 391. A filter 392c is formed at a rear end portion of the bottom 392a of the inner case 392 and at a lower end portion of the rear end portion of the left side 392 b. The filter portion 392c is formed of a plurality of fine holes having the same diameter as the holes formed in the receiving surface 373b (see fig. 3 and 4) of the filter unit 373, and allows the passage of liquid such as waste liquid.

Further, a plurality of legs 392d protruding downward are formed at the bottom 392a of the inner case 392. The protruding length of the front side of these leg portions 392d is larger than the protruding length of the rear side. Therefore, when the inner case 392 is housed in the outer case 391 in a state where the leg 392d is in contact with the bottom 391a of the outer case 391, as shown in fig. 11, the inner case 392 is housed in a state where the bottom 392a gradually slopes downward from the front end (other end) toward the rear end (one end).

The pressurized air supply line 41 is configured by connecting a plurality of pressurized air supply pipes, and one end is connected to the cover 372 and the other end is connected to a portion midway in the beverage supply line 38. An air pump 411, a2 nd pinch valve 412, and a 3 rd pinch valve 413 are provided in the pressurized air supply line 41.

The air pump 411 is driven according to an instruction supplied from the control portion 60 for compressing and delivering air. The 2 nd pinch valve 412 is provided at one end side (the cover 372 side) of the air pump 411. The 2 nd pinch valve 412 is opened and closed in response to a command supplied from the control unit 60, and allows fluid to pass when the valve is in an opened state, and restricts fluid to pass when the valve is in a closed state. The 3 rd pinch valve 413 is provided at the other end side (beverage supply line 38 side) of the air pump 411. The 3 rd pinch valve 413 is opened and closed in response to a command supplied from the control unit 60, and allows fluid to pass when the valve is in an opened state, and restricts fluid to pass when the valve is in a closed state.

The drain line 43 is constituted by a single drain pipe or by connecting a plurality of drain pipes, and is provided so as to branch from the middle of the beverage supply line 38 and extend to the upper region of the storage tub 39. A 4 th pinch valve 431 is provided in the drain line 43. The 4 th pinch valve 431 is opened and closed in response to a command supplied from the control unit 60, and allows the passage of a fluid such as waste liquid when the valve is in an opened state, and restricts the passage of a fluid such as waste liquid when the valve is in a closed state.

Thus, the storage tub 39 stores the extraction residue K generated by the extraction of the beverage by the extractor 37, the filter paper PF used for the extraction of the beverage, and the waste liquid generated by the cleaning of the extractor 37.

The nozzle 45 is detachable from a nozzle attachment portion, not shown, provided on the front door 20. The nozzle 45 is attached to the nozzle attachment portion so as to face the beverage supply portion 22. That is, the nozzle 45 is detachably disposed so as to face the beverage supply unit 22. Such a nozzle 45 ejects the beverage supplied through the beverage supply line 38 to the cup C placed on the stage 22a.

The control unit 60 controls the operations of the respective parts of the beverage supply apparatus in a unified manner in accordance with programs and data stored in a storage unit not shown. The control unit 60 may be realized by, for example, a processing device such as CPU (Central Processing Unit), that is, by software, by hardware such as IC (Integrated Circuit), or by both software and hardware.

In the beverage supply apparatus having the above-described configuration, the coffee beverage can be supplied to the cup C placed on the placement table 22a of the beverage supply unit 22 in the following manner. On the premise that hot water at a predetermined temperature is generated and stored in the hot water tank 351, the 1 st pinch valve 381, the 2 nd pinch valve 412, and the 4 th pinch valve 431 are closed, and the 3 rd pinch valve 413 is opened.

As shown in fig. 11, when the user touches the display 21, the control unit 60 that has received the sales signal of the selected beverage moves the filter assembly 373 upward, and then supplies a drive command to the raw material supply drive unit 311 to cause the grinder 33 to discharge the amount of coffee beans corresponding to the beverage, supplies a drive command to the grinder 33 to grind the coffee beans, and inputs the ground coffee beans to the extractor 37. Thereafter, the driving of the raw material supply driving unit 311 is stopped.

The control unit 60 drives the constant displacement pump 352 to deliver a constant quantity of hot water from the hot water tank 351 to the auxiliary tank 353, and drives the hot water pump 354 to pressurize the hot water in the auxiliary tank 353 and deliver the pressurized hot water to the extractor 37, thereby charging the hot water to the extractor 37. After that, the driving of the constant displacement pump 352 and the driving of the hot water pump 354 are stopped.

Then, the control unit 60 causes the air pump 411 to be driven, and as shown in fig. 12, the pressurized air (pressurized air for stirring) is supplied to the cylinder 371 by the part of the beverage supply line 38 to stir (forcibly stir) the coffee ground beans and the hot water. After that, the driving of the air pump 411 is stopped.

In this way, the control unit 60 that forcibly agitates the coffee beans and the hot water moves the cover 372 downward to close the upper surface opening 371a of the cylinder 371, turns the 3 rd pinch valve 413 into a closed state, turns the 1 st pinch valve 381 and the 2 nd pinch valve 412 into an open state, and drives the air pump 411. Further, the 4 th pinch valve 431 is maintained in a closed state.

As a result, as shown in fig. 13, by supplying pressurized air (pressurized air for extraction) to the cylinder 371, coffee is extracted, and the extracted coffee is supplied to the nozzle 45 through the beverage supply line 38 and is discharged from the nozzle 45 to the cup C.

When a predetermined amount of coffee is supplied to the cup C by the discharge, the control unit 60 stops driving of the dosing pump 352, the hot water supply pump 354, and the air pump 411. Thereby, the user swings the opening/closing door 23 in the opening direction, and can take out the cup C from the beverage supply unit 22.

Thereafter, the control unit 60 moves the cover 372 upward to open the upper surface opening of the cylinder 371, thereby releasing the internal pressure of the cylinder 371. Then, the control unit 60 supplies hot water from the hot water unit 35 to the extractor 37 to clean the inside of the cylinder 371, and opens the 4 th pinch valve 431 to discharge water remaining in the extractor 37 as waste liquid to the storage tub 39 through the drain line 43 as shown in fig. 14.

The control unit 60 that discharges the waste liquid in this manner closes the 4 th pinch valve 431, and moves the filter unit 373 downward as shown in fig. 15. Then, the control unit 60 supplies an operation command to the paper roller unit 375 to cause the filter paper PF to perform a predetermined discharge operation, and stores the extracted residues K generated by extraction of coffee in the storage tub 39 together with the filter paper PF, thereby ending the coffee supply.

In the beverage supply apparatus according to the embodiment of the present invention described above, as shown in fig. 7, the extracted residues K generated by the extraction of the beverage fall downward from the filter paper PF when passing through the paper roll 375 and are stored in the storage tub 39. At this time, some of the extracted residues K falling from the filter paper PF fall onto the driven roller 3752, and some of the extracted residues K adhering to the filter paper PF fall onto the driven roller 3752 while being separated from the portion sandwiched between the driving roller 3751 and the driven roller 3752.

However, since the driven roller 3752 has the inclined peripheral surface portion 3752a2 formed in the housing portion 3752a and the outer peripheral hole 3752b2 formed between the 2 nd tooth portions 3752b1 so as to face the inclined peripheral surface portion 3752a2, the falling extraction residue K is guided by the inclined peripheral surface portion 3752a2 through the outer peripheral hole 3752b2 and housed in the housing tub 39, and can be prevented from being deposited between the 2 nd tooth portions 3752b 1.

In the beverage supply apparatus described above, the housing tub 39 is constituted by the outer case 391 and the inner case 392, and the inner case 392 having the filter section 392c formed at the rear end portions of the bottom section 392a and the left side section 392b is housed in a state separated from the bottom section 391a in such a manner that the bottom section 392a gradually slopes downward from the front end portion (the other end portion) toward the rear end portion (the one end portion) by the leg section 392d abutting against the bottom section 391 a. Therefore, the waste liquid guided to the storage tank 39 is stored in the outer tank 391 by the filter 392c, and the extracted residue K and the filter paper PF guided to the storage tank 39 are stored in the inner tank 392 without passing through the filter 392c.

According to the beverage supply apparatus of the embodiment of the present invention described above, since the accumulation of a part of the extracted slag K between the 2 nd teeth 3752b1 of the driven roller 3752 can be suppressed, the reduction in the length of the filter paper PF sandwiched between the 1 st teeth 3751b of the driving roller 3751 and the 2 nd teeth 3752b1 of the driven roller 3752 can be avoided, and the reduction in the feeding amount of the filter paper PF can be suppressed.

According to the beverage supply apparatus described above, since the accommodating tub 39 accommodates the extracted dreg K and the filter paper PF in the inner case 392 and the waste liquid in the outer case 391, the operator can easily separate the extracted dreg K and the filter paper PF from the waste liquid by carrying the accommodating tub 39 to the waste site and separating the inner case 392 from the outer case 391.

In addition, according to the beverage supply apparatus described above, the cylinder 371 constituting the extractor 37 is formed to have a small diameter, and the volume of the coffee ground beans stored in the cylinder 371 can be made larger than in the conventional art. Therefore, the distance of hot water passing through the coffee beans can be increased, and the concentration of the extracted coffee can be increased.

The preferred embodiments of the present invention have been described above, but the present invention is not limited to these, and various modifications can be made.

In the above embodiment, the inclined peripheral portion 3752a2 is formed in the housing portion 3752a of the driven roller 3752, but in the present invention, the inclined peripheral portion may not be formed.

In the above-described embodiment, the leg 392d is provided in the inner case 392, and the inner case 392 is housed in the outer case 391 in a state in which the bottom 392a is separated from the bottom 391a by the leg 392d being in contact with the bottom 391a, but in the present invention, the form is not limited as long as the inner case is housed in the outer case in a state in which the bottom of the inner case is separated from the bottom of the outer case.

Description of the reference numerals

1. A device body; 10. a main body cabinet; 20. a front surface door; 22. a beverage supply unit; 30. a beverage generation unit; 31. a raw material box; 33. a pulverizer; 35. a hot water supply unit; 37. an extractor; 371. a cylinder; 372. a cover body; 373. a filter assembly; 375. a paper roll section; 3751. a driving roller; 3751a, a rotation shaft; 3751b, 1 st tooth; 3752. driven roller; 3752a, a housing portion; 3752a1, hollow portion; 3752a2, inclined peripheral surface portion; 3752b, outer peripheral portion; 3752b1, 2 nd tooth; 3752b2, peripheral holes; 3753. a roller motor; 376. a shaft portion; 39. a housing barrel; 391. an outer case; 391a, bottom; 392. an inner box; 392a, bottom; 392c, a filtering section; 392d, legs; 41. a pressurized air supply line; 43. a drain line; 45. a nozzle; 47. a filter housing section; 60. a control unit; C. a cup; FR, filter rolls; K. extracting dregs; PF, filter paper.

Claims

1. A beverage supply device is characterized in that,

the beverage supply device comprises:

an extractor to which hot water and crushed raw materials are added, thereby extracting a beverage;

a storage unit that rotatably supports and stores a filter roller around which filter paper used for extracting a beverage by the extractor is wound; and

a paper roll part which clamps the filter paper drawn out by the filter roll and discharges the filter paper from the filter roll each time beverage is extracted,

the beverage supply device supplies the beverage extracted by the extractor to the cup,

the paper roll section includes:

a pair of left and right driving rollers coupled to a common rotation shaft so as to face each other on inner surfaces thereof, each of the driving rollers having teeth protruding radially outward on an outer peripheral portion thereof, the driving rollers being rotated about a central axis of the rotation shaft by a driving force from a driving source; and

a pair of left and right driven rollers provided at a position below the drive roller so as to face each other with inner surfaces thereof facing each other, the pair of left and right driven rollers being disposed so as to be separated from each other, wherein a part of a tooth portion formed in a manner protruding radially outward in an outer peripheral portion thereof engages with a part of a tooth portion of the corresponding drive roller and clamps the filter paper, thereby rotating around its central axis in accordance with rotation of the drive roller,

the driven roller has a hole formed between the teeth so as to face a housing portion housing a shaft portion constituting the center axis.

2. The beverage supply apparatus according to claim 1, wherein,

the driven roller is formed with an inclined peripheral surface portion inclined toward the inside so as to gradually approach the central axis, and the hole is formed so as to face the inclined peripheral surface portion.