JP6775142B2 - Beverage making equipment - Google Patents

Description

The present disclosure relates to a beverage manufacturing apparatus that uses milk.

Conventionally, beverage manufacturing equipment for producing and / or supplying, for example, coffee beverages and soft drinks has become widespread. Some such beverage production devices produce coffee beverages by mixing, for example, foamed milk or steamed milk with coffee. Foamed milk is milk that has been whipped. Steamed milk is milk that has been warmed using steam, and is a state in which milk bubbles and liquid are mixed.

As a beverage manufacturing device provided with a device (milk former) capable of producing foamed milk or steamed milk, for example, there is a technique disclosed in Patent Document 1. Patent Document 1 discloses the following milk formers. That is, the milk delivered from the milk container is mixed with air in the first mixing chamber to produce a foamy milk and a mixture of air (that is, foamed milk). The foamed milk produced in the first mixing chamber is compressed by a milk pump and then heated by high temperature steam in the second mixing chamber, if necessary. The foamed milk flowing out of the second mixing chamber flows into the temperer. The temperer homogenizes the foamed milk, which refines the bubbles in the foamed milk and distributes it more evenly into the milk.

Japanese Unexamined Patent Publication No. 2014-213209

In such a beverage manufacturing apparatus, in order for the milk former to operate normally, each component constituting the milk former needs to be suitably attached.

An object of the present disclosure is to provide a beverage manufacturing apparatus having a milk former to which components can be suitably attached.

In the present disclosure, a first gear , a second gear, a case for accommodating the first gear and the second gear in an internal space, a pump-side magnet incorporated in the first gear , and the pump-side magnet are described. It has a motor-side magnet that magnetically couples and a motor to which the motor-side magnet is attached to a rotating shaft. The motor-side magnet is formed in a columnar shape, and the motor-side magnet is formed along the central axis of the motor-side magnet. The rotating shaft has a first hole for passing a rotating shaft and a second hole opened on the outer peripheral side surface of the motor-side magnet , the rotating shaft has a third hole, and the motor-side magnet has a third hole. , Attached to the rotating shaft by a pin member that passes through the second hole and the third hole at the same time.

According to the present disclosure, it is possible to provide a beverage manufacturing apparatus having a milk former to which components can be suitably attached.

Perspective view of the beverage manufacturing apparatus according to the embodiment of the present disclosure. The figure which shows the structure of the coffee extraction part The figure which shows the structure of the steam supply part, the milk supply part, and the air supply part. Enlarged perspective view of the nozzle unit Exploded view of nozzle unit The vertical cross section of the milk former along the line VV'of FIG. 4 when viewed from the front. Exploded view of the gear pump and its peripheral configuration The figure which shows the dimension of the large diameter gear and the small diameter gear, and the internal space of a case. It is a left side view of the milk former, and a partial perspective view of the inside. It is a partial cross-sectional view of a branch part, a valve and a gear on a motor side seen from the left side, and is the figure which shows the switching of the 1st outlet and the 2nd outlet. Bottom view of nozzle unit and valve motor The figure for demonstrating an example of the shape of the motor side magnet for attaching a motor side magnet to a rotating shaft. An exploded perspective view for explaining a method of mounting a magnet on the motor side according to the embodiment of the present disclosure. Perspective view for explaining the method of determining the position of the hole of the magnet on the motor side. Side view for explaining the method of determining the position of the hole of the magnet on the motor side. Perspective view for explaining the method of determining the position of the hole of the magnet on the motor side. Side view for explaining the method of determining the position of the hole of the magnet on the motor side.

Hereinafter, each embodiment of the present disclosure will be described in detail with reference to the drawings. However, more detailed explanations than necessary, for example, detailed explanations of already well-known matters and duplicate explanations for substantially the same configuration may be omitted.

The following description and referenced drawings are provided for those skilled in the art to understand the present disclosure and are not intended to limit the scope of the claims of the present disclosure.

<1-1. Definition of direction>
First, the direction in the present embodiment is defined. The left-right direction is defined as the direction along the axis from left to right or right to left when the front surface of the beverage manufacturing apparatus 1 and the user face each other. Further, the direction from the front surface to the back surface or from the back surface to the front surface of the beverage production device 1 when the front surface of the beverage production device 1 and the user face each other is defined as the front-rear direction. Further, the direction from the bottom surface to the top surface or from the top surface to the bottom surface of the beverage manufacturing device 1 when the front surface of the beverage manufacturing device 1 faces the user is defined as the vertical direction. Hereinafter, the axes along the left-right direction, the front-back direction, and the up-down direction may be referred to as an x-axis, a y-axis, and a z-axis, respectively.

<1-2. Outline configuration of beverage manufacturing apparatus 1>
FIG. 1 is a perspective view of the beverage manufacturing apparatus 1. The beverage manufacturing apparatus 1 is for business use and is installed in a store or the like. The beverage manufacturing apparatus 1 includes a main body 2, a door 3, a button group 4 (see the part surrounded by a dotted line), a canister 5, a milk cooler 6, a nozzle unit 7, and a drip tray 8. I have.

The door 3 is attached to the front surface of the main body 2 so as to be openable and closable. The button group 4 is arranged in front of the door 3. The plurality of buttons included in the button group 4 include the types of beverages that the beverage production apparatus 1 can provide (espresso coffee, drip coffee (hot ice), latte (hot ice), cappuccino (hot ice), etc.). Are assigned to each. When the button to which the desired beverage is assigned is operated by the user, the beverage maker 1 manufactures and provides the beverage assigned to the operated button. In addition, the beverage production apparatus 1 in this embodiment shall produce a beverage using coffee.

The canister 5 is attached to the upper surface of the main body 2 and stores coffee beans. The milk cooler 6 contains at least one milk pack 9 (see FIG. 3 below) and stores it at a low temperature.

The nozzle unit 7 is provided on the front surface of the main body 2 and discharges the beverage produced inside the main body 2 downward. Further, the nozzle unit 7 generates foamed milk (hot cold), steam milk (hot), cold milk and the like using the milk supplied from the milk cooler 6, and discharges the milk downward. These milks and the beverages produced inside the main body 2 are separately discharged from the nozzle unit 7 and mixed in the container 10 to produce various beverages.

The drip tray 8 projects forward from the lower end of the main body 2. The beverage discharged from the nozzle unit 7 is provided in the beverage container 10 placed on the drip tray 8. Also,
The drip tray 8 collects and stores beverages that have spilled from the nozzle unit 7 or spilled from the container 10.

As shown in FIG. 2 to be described later, a coffee extraction unit 21 for producing coffee using coffee beans stored in the canister 5 is provided inside the main body 2. Further, as shown in FIG. 3, which will be described later, a steam supply unit 22, a milk supply unit 23, and an air supply unit 24 are further provided inside the main body 2. The applicant discloses the coffee extraction unit, the steam supply unit, the milk supply unit, and the air supply unit in Japanese Patent Application Laid-Open No. 2013-165814 and the like. Therefore, in the present embodiment, the portion corresponding to the disclosure contents of JP2013-165814 and the like will be briefly described.

FIG. 2 is a diagram showing the configuration of the coffee brewing unit 21. As shown in FIG. 2, the coffee extraction unit 21 includes a hot water tank 211, a hot water pump 212, a filter 213, a hot water supply valve 214, a coffee side hot water supply pipe 215, an elevating device 216, a cylinder unit 217, and a cap. It has 218, a coffee liquid pipe 2212, and a mill 2213.

The hot water tank 211 is an open-air tank, and stores a predetermined amount of drinking water in a state of being heated to a predetermined temperature by a built-in heater (not shown).

The hot water pump 212 is a pump that pressurizes and discharges hot water in the hot water tank 211. The upstream end of the coffee side hot water supply pipe 215 is connected to the discharge port of the hot water pump 212. The coffee side hot water supply pipe 215 is provided with a filter 213 and a hot water supply valve 214 including a solenoid valve in this order from the upstream side. The downstream end of the coffee side hot water supply pipe 215 is removably connected to the hot water supply port of the cylinder 219 described later.

The cylinder unit 217 is configured to be movable in the vertical direction, and has a cylinder 219 and a piston 2210. The upper surface of the cylinder 219 is open, and a hot water supply port is formed on the side surface near the lower end of the cylinder 219. The piston 2210 has water permeability and can move in the internal space of the cylinder 219.

The cap 218 is provided above the cylinder unit 217 and is fitted into the rising cylinder 219 to close the opening thereof. The space surrounded by the lower surface of the cap 218 that closed the cylinder 219, the inner peripheral surface of the cylinder 219, and the upper surface of the piston 2210 forms a coffee liquid extraction chamber.

The cap 218 is formed with extraction holes 2211 penetrating from the lower surface to the upper surface of the cap 218. The coffee liquid obtained in the extraction chamber passes through the extraction hole 2211. The upper end of the extraction hole 2211 is connected to the coffee nozzle 72 via the coffee liquid pipe 2212 so as to communicate the fluid.

A mill 2213 is provided above the inside of the main body 2. The mill 2213 grinds the coffee beans contained in the canister 5 to produce ground beans.

Next, the operation of the coffee brewing unit 21 will be described. When a particular button in button group 4 (see FIG. 1) is operated, mill 2213 produces ground beans. The produced ground beans are put into the above-mentioned extraction room.

Next, the cylinder unit 217 is raised by the elevating device 216, and the cap 218 is pushed into the opening of the cylinder 219. As a result, the ground beans in the extraction chamber are compressed between the piston 2210 and the cap 218.

Next, the hot water pump 212 is operated and the hot water supply valve 214 is opened, and a predetermined amount of hot water is pressurized and supplied into the cylinder 219 from the hot water tank 211. As a result, a high-concentration coffee liquor is obtained. Here, a flow meter (not shown) is provided between the filter 213 and the hot water supply valve 214, and this flow meter measures the amount of hot water supplied to the cylinder 219. The obtained coffee liquid is sent out from the cap 218 and discharged from the coffee nozzle 72 via the coffee liquid pipe 2212. Then, it is poured into the container 10 placed on the drip tray 8 (see FIG. 1).

Next, the configurations of the steam supply unit 22, the milk supply unit 23, and the air supply unit 24 provided inside the main body 2 will be described. FIG. 3 is a diagram showing the configurations of the steam supply unit 22, the milk supply unit 23, and the air supply unit 24. As shown in FIG. 3, the steam supply unit 22 includes an electromagnetic pump 221, a milk side hot water supply pipe 222, a boiler 223, a steam pipe 224, and a three-way valve 225. The hot water tank 211 may be shared with the coffee brewing unit 21.

The hot water in the hot water tank 211 is supplied to the boiler 223 via the milk side hot water supply pipe 222 by the operation of the electromagnetic pump 221. The boiler 223 is controlled to have a constant temperature at all times by a built-in electric heater (not shown), and steam is generated using hot water supplied by the operation of the electromagnetic pump 221. The generated steam is supplied to the hot milk nozzle 710 via the steam pipe 224 and the three-way valve 225.

Further, as shown in FIG. 3, the milk supply unit 23 has a milk supply pipe 231 in addition to the milk cold storage 6 described above.

The upstream end of the milk supply pipe 231 is inserted into the milk pack 9 housed in the milk cooler 6. Further, the downstream end of the milk supply pipe 231 is connected so as to communicate fluid with the milk inlet 746 of the gear pump 74 (see FIG. 4 and the like).

Further, as shown in FIG. 3, the air supply unit 24 includes an air pump 241, an air supply pipe 242, and an air valve 243.

The air pump 241 is driven by a motor (not shown), sucks in external air, and sends it out to the air supply pipe 242. The downstream end of the air supply pipe 242 is connected to the air inlet 747 of the gear pump 74 so as to communicate with the air. Further, an air valve 243 made of a solenoid valve or the like is provided in the middle of the air supply pipe 242. When the air valve 243 is opened, the air sent out from the air pump 241 is supplied to the air inlet 747 via the air supply pipe 242.

<1-3. Nozzle unit and related configurations>
Next, a detailed configuration of the nozzle unit 7 will be described with reference to FIGS. 1 and 4 to 11. As shown in FIGS. 1 and 4, the nozzle unit 7 is provided on the front surface of the main body 2 and includes a cover 71, a coffee nozzle 72, and a milk former 73. Note that the cover 71 is not shown in FIG. As shown in FIGS. 4 to 11, the milk former 73 includes a gear pump 74, a branch portion 75, a valve 76, a cold milk nozzle 77, a temperer 78, and a milk flow path 79 in the milk former. And a nozzle for hot milk 710.

The gear pump 74 is a transfer pump for transferring milk, and has a case 741, a large diameter gear 742, a small diameter gear 743, and a lid 744, as shown in FIGS. 6 and 7.

The large-diameter gear 742 and the small-diameter gear 743 are examples of the first gear and the second gear. The large-diameter gear 742 and the small-diameter gear 743 are housed in the case 741 in a state of being meshed with each other. Further, a pump-side magnet 745 is built in the large-diameter gear 742.

FIG. 8 is a diagram showing the dimensions of the large-diameter gear 742 and the small-diameter gear 743 and the dimensions of the internal space of the case. In the present embodiment, as shown in FIG. 8, the tooth tip circle diameters of the large diameter gear 742 and the small diameter gear 743 are OD1 and OD2, and the tooth bottom circle diameters of both gears 742 and 743 are RD1 and RD2. Further, the tooth widths (widths in the y-axis direction) of both gears 742 and 743 are substantially the same as each other, and are W (not shown). Further, the large-diameter gear 742 rotates clockwise when viewed from the front of the beverage manufacturing apparatus 1 (see arrow a), and the small-diameter gear 743 rotates counterclockwise when viewed from the same direction (arrow b). reference). In the present embodiment, the small diameter gear 743 is driven to rotate the large diameter gear 742.

The case 741 is made of a non-magnetic material such as resin. In this case 741, an internal space IS1 that accommodates both gears 742 and 743 is formed. As shown in FIG. 8, the internal space IS1 is defined by a large-diameter arc surface S1, a small-diameter arc surface S2, a bottom surface S3, an upper surface S4, and a front surface S5.

The arcuate surfaces S1 and S2 are arcuate surfaces including sides forming an arc having radii of approximately OD1 / 2 and OD2 / 2 when viewed from the front in the y-axis direction.

The bottom surface S3 is a surface including two tangent lines on the lower side (line segments perpendicular to the paper surface in FIG. 8) in contact with the tooth tip circles of both arcuate surfaces S1 and S2 when viewed from the front. On the other hand, the upper surface S4 is a surface including two tangent lines on the upper side (line segments perpendicular to the paper surface in FIG. 8). The front surface S5 is a surface that closes the space IS1 surrounded by the surfaces S1 to S4 on the front side (front side in FIG. 8) of the main body 2.

The internal space IS1 may have a difference of about a tolerance with respect to the above dimensions. Further, the gear pump 74 may be designed so as to have a slight margin with respect to the above dimensions at the design stage.

The case 741 also has a milk inlet 746, an air inlet 747, and a milk outlet 748, as shown in FIGS. 6 and 7. The milk inlet 746 is an example of an inlet and is a cylindrical or tubular member capable of fluid communication with the suction side of the gear pump 74 through a through hole formed in the upper surface S4 of the case 741. The downstream end of the milk supply pipe 231 described above is connected to the milk inlet 746 so as to allow fluid communication.

The air inlet 747 is a cylindrical or tubular member capable of fluid communication with the internal space IS1 of the gear pump 74 through a through hole formed in the case 741. The downstream end of the above-mentioned air supply pipe 242 is connected to the air inlet 747 so as to allow fluid communication.

In the present embodiment, the air inlet 747 is configured to allow fluid communication with the suction side of the gear pump 74, similarly to the milk inlet 746. The milk inlet 746 and the air inlet 747 are preferably formed at or near the center of the upper surface S4.

The milk outlet 748 is an example of an outlet and is a through hole formed in the bottom surface S3 of the case 741. The milk outlet 748 is fluid communicable with the branch 75. The milk outlet 748 is preferably formed at or near the center of the bottom surface S3.

As shown in FIG. 6 and the like, the above case 741 is attached to the front surface of the main body 2 so that the bottom surface S3 of the internal space IS1 is parallel to the xy plane. Then, the lid 744 closes the opening portion of the case 741 in which both gears 742 and 743 are housed.

In order to rotate the large diameter gear 742, the main body 2 includes a gear pump motor 25 as shown in FIGS. 5 to 7. The gear pump motor 25 is an example of a motor, and has a rotating shaft 251 and a motor-side magnet 252. The motor-side magnet 252 magnetly couples with the pump-side magnet 745 (see FIG. 6) built in the large-diameter gear 742, and transmits the drive torque generated by the gear pump motor 25 to the pump-side magnet 745. Details of the motor-side magnet 252 will be described later.

As shown in FIG. 9, the branch portion 75 is a cylindrical or tubular member extending in the front-rear direction. A cylindrical internal space IS2 is formed in the branch portion 75. An inlet 751 for fluid communication with the milk outlet 748 is formed near the upper part of the branch portion 75. A first outlet 752 for fluid communication with the cold milk nozzle 77 is formed on the lower rear end side of the branch portion 75. At the front end of the branch portion 75, a second outlet 753 is formed so as to communicate with the milk flow path 79 described later. The rear end of the branch portion 75 is formed with an opening 754 into which the valve 76 described later is inserted.

The valve 76 is inserted into the opening 754 of the internal space IS2 of the branch portion 75 and has a rotating body 761 having a substantially cylindrical shape. A first ring groove 762 and a second ring groove 763 are formed on the outer peripheral surface (in other words, the side surface) of the rotating body 761. The axis of the first ring groove 762 is parallel to the y-axis, but the axis of the ring groove 763 is not parallel to the y-axis and is oblique to the y-axis in a plan view from the x-axis direction. As shown in FIG. 10, the first O-ring 764 and the second O-ring 765 are attached to the first ring groove 762 and the second ring groove 763. Note that O-rings 764 and 765 are not shown in FIG. 9 for convenience, and ring grooves 762 and 763 are not shown in FIG. 10 for convenience.

Here, the spatial distance (hereinafter referred to as the inter-ring distance) d between the two O-rings 764 and 765 in the y-axis direction is a position on the peripheral surface of the valve 76 (in other words, the valve 76) as shown in FIG. It depends on the orientation from the central axis of. Therefore, due to the rotation of the rotating body 761, as shown in the upper part of FIG. 10, when the shortest portion of the inter-ring distance d faces upward, the inlet 751 and the second outlet 753 communicate with each other (arrow-dashed line arrow). (See), as shown in the lower part of FIG. 10, when this shortest portion faces downward, the inlet 751 and the first outlet 752 communicate with each other in fluid (see the arrow of the alternate long and short dash line).

Further, for the rotation of the valve 76, a valve side gear 766 is attached to the rear end of the valve 76 as shown in FIG. More specifically, the valve side gear 766 is attached in a state where its own rotation shaft and the central shaft of the valve 76 are aligned with each other. Here, in order to facilitate the attachment of the milk former 73 to the main body 2, it is preferable that the valve side gear 766 can be inserted and removed from the main body 2.

Due to the rotation of the valve 76, the main body 2 incorporates a valve motor 26, as shown in FIGS. 4 and 5. As shown in FIG. 11, the valve motor 26 has a rotating shaft 261 and a motor side gear 262. As shown in FIG. 11, the motor side gear 262 is fixed to the tip of the rotating shaft 261 and meshes with the valve side gear 766.

The cold milk nozzle 77 is integrally attached to the case 741 via the branch portion 75. As shown in FIG. 9, the cold milk nozzle 77 is a cylindrical or tubular member extending in the vertical direction. A cylindrical internal space IS3 is formed in the cold milk nozzle 77. At the upper end of the cold milk nozzle 77, an inlet for fluid communication between the first outlet 752 and the internal space IS3 is formed. Further, the lower end of the cold milk nozzle 77 is opened so as to communicate with the internal space IS3 in a fluid manner, and the temperer 78 is inserted into the internal space IS3 through this opening.

The upstream end of the milk flow path 79 is connected to the second outlet 753 so that fluid can communicate with it, and the downstream end thereof is connected to the hot milk nozzle 710 so that fluid can communicate with each other. As shown in FIG. 5, the hot milk nozzle 710 is connected to the downstream end of the steam pipe 224 so as to allow fluid communication.

<1-4. Operation of milk former (when making steam milk)>
Next, an operation example of the milk former 73 having the above configuration will be described. First, when a specific button in the button group 4 is operated and the operated button is a beverage using steam milk, the microcomputer (not shown) provided inside the main body 2 has the above configuration as follows. Control each part.

The microcomputer drives the valve motor 26. As a result, the rotation shaft 261 rotates. The force generated in the rotary shaft 261 is transmitted to the valve 76 via the motor side gear 262 and the valve side gear 766 at the tip. When producing steam milk, the microcomputer controls the valve motor 26 to rotate and stop the valve 76 so that the shortest portion of the inter-ring distance d faces upward. As a result, a flow path from the inlet 751 to the second outlet 753 (see the arrow on the alternate long and short dash line in FIG. 10) is formed in the internal space IS2 of the branch portion 75.

The microcomputer further operates the electromagnetic pump 221 to energize the three-way valve 225. As a result, the hot water in the hot water tank 211 begins to flow into the boiler 223 via the milk side hot water supply pipe 222. The inflowing hot water becomes steam by the boiler 223 and is supplied to the hot milk nozzle 710 via the steam pipe 224.

The microcomputer further drives the gear pump motor 25. As a result, the rotational force generated in the rotating shaft 251 is transmitted to the large-diameter gear 742 by the magnet coupling between the motor-side magnet 252 and the pump-side magnet 745. As a result, the large-diameter gear 742 starts to rotate, and the small-diameter gear 743 is driven to rotate with the large-diameter gear 742. At this time, both gears 742 and 743 rotate in the opening direction (see arrows a and b in FIG. 8) on the suction side of the internal space IS1. Due to such rotation, a negative pressure is generated on the suction side of the internal space IS1, and the milk in the milk pack 9 passes through the milk supply pipe 231 and the milk inlet 746 to the internal space IS1 of the gear pump 74 (more specifically). Begins to be supplied to the suction side). The milk on the suction side is sent to the discharge side around the outside of the gears 742 and 743 by rotation, and is discharged from the milk outlet 748 by the engagement of the gears 742 and 743.

When making steam milk, the air pump 241 is stopped and the air valve 243 is closed. That is, the gear pump 74 is not supplied with air by the air supply unit 24.

The milk discharged from the milk outlet 748 is supplied to the inlet 751 of the branch portion 75. The milk flowing into the internal space IS2 from the inlet 751 is discharged from the second outlet 753 through the internal space IS2, and then flows into the hot milk nozzle 710 through the milk flow path 79. As described above, steam is supplied to the hot milk nozzle 710 from the steam pipe 224. Inside the hot milk nozzle 710, the milk is heated with steam, which produces steam milk. The generated steam milk is discharged from the hot milk nozzle 710 toward the container 10.

<1-5. Operation of milk former (when making cold milk)>
Further, when a specific button in the button group 4 is operated and the operated button is a beverage using cold milk, the microcomputer (not shown) provided inside the main body 2 has the above configuration as follows. Control each part.

First, the microcomputer controls the valve motor 26 to rotate and stop the valve 76 so that the shortest portion of the inter-ring distance d faces downward. As a result, a flow path from the inlet 751 to the first outlet 752 (see the arrow of the alternate long and short dash line in the lower part of FIG. 10) is formed in the internal space IS2 of the branch portion 75.

The microcomputer further drives the gear pump motor 25. As a result, the milk in the milk pack 9 starts to be supplied to the internal space IS1 (more specifically, the suction side) of the gear pump 74, as described in columns 1-4. The cold milk on the suction side is discharged from the milk outlet 748 by the rotation of both gears 742 and 743.

When producing cold milk, the gear pump 74 does not receive air from the air supply unit 24.

Milk from the milk outlet 748 is supplied to the inlet 751 of the branch 75. The milk that has flowed into the internal space IS2 from the inlet 751 is discharged from the first outlet 752 through the internal space IS2, and flows into the internal space IS3 from the upper end of the cold milk nozzle 77. The inflowing milk is discharged from the lower end of the cold milk nozzle 77 toward the container 10 while maintaining the cold state.

<1-6. Milkformer operation (when making cold foamed milk)>
Further, when a specific button in the button group 4 is operated and the operated button is a beverage using cold foamed milk, the microcomputer (not shown) provided inside the main body 2 is as follows. It controls each part of the above configuration.

First, the microcomputer controls the valve motor 26 to rotate and stop the valve 76 so that the shortest portion of the inter-ring distance d faces downward. As a result, a flow path from the inlet 751 to the first outlet 752 (see the arrow of the alternate long and short dash line in the lower part of FIG. 10) is formed in the internal space IS2 of the branch portion 75.

Next, the microcomputer opens the air valve 243 and drives the air pump 241 when producing cold foamed milk. As a result, the external air is taken into the air pump 241 and supplied to the internal space IS1 of the gear pump 74 via the air supply pipe 242 and the air inlet 747 of the gear pump 74.

The microcomputer further drives the gear pump motor 25. As a result, the milk in the milk pack 9 starts to be supplied to the internal space IS1 (more specifically, the suction side) of the gear pump 74 in the same manner as described in columns 1-4.

In the gear pump 74, the milk and air on the suction side are mixed by the rotation of both gears 742, 743, thereby producing cold foamed milk. The produced cold foamed milk goes around the outside of the rotating gears 742 and 743 and is discharged from the milk outlet 748.

The cold foamed milk discharged from the milk outlet 748 is supplied to the inlet 751 of the branch portion 75, then discharged from the first outlet 752 through the internal space IS2, and is discharged from the upper end of the cold milk nozzle 77. It flows into the internal space IS3. As described above, the temperer 78 is provided in the internal space IS3. The temperer 78 homogenizes the characteristics of the inflowing cold foamed milk and discharges it from the lower end of the cold milk nozzle 77 toward the container 10.

<1-7. Operation of milk former (when making hot foamed milk)>
Further, when a specific button in the button group 4 is operated and the operated button is a beverage using hot foamed milk, the microcomputer (not shown) provided inside the main body 2 is as follows. It controls each part of the above configuration.

First, the microcomputer controls the valve motor 26 to rotate and stop the valve 76 so that the shortest portion of the inter-ring distance d faces upward. As a result, a flow path from the inlet 751 to the second outlet 753 (see the arrow on the alternate long and short dash line in FIG. 10) is formed in the internal space IS2 of the branch portion 75.

Further, as described in columns 1-4, steam is supplied to the hot milk nozzle 710 via the steam pipe 224.

Further, as described in columns 1-6, the gear pump 74 produces cold foamed milk and discharges it from the milk outlet 748.

The cold foamed milk discharged from the milk outlet 748 flows into the inlet 751 of the branch portion 75, is discharged from the second outlet 753, and then passes through the milk flow path 79 to the hot milk nozzle 710. Inflow. As described above, steam is supplied to the hot milk nozzle 710 from the steam pipe 224. Inside the hot milk nozzle 710, the foamed milk is heated by steam, which produces hot foamed milk. The generated hot foamed milk is discharged from the hot milk nozzle 710 toward the container 10.

<1-8. Detailed explanation of the motor side magnet 252>
Next, the motor-side magnet 252 of the gear pump motor 25 that transmits the driving force to the gear pump 74 will be described in detail.

<1-8-1. Background to the invention>
As described above, the driving force of the gear pump motor 25 is transmitted to the large-diameter gear 742 by magnet-coupling the motor-side magnet 252 with the pump-side magnet 745 built in the large-diameter gear 742 of the gear pump 74. .. The motor-side magnet 252 is attached to the rotating shaft 251 of the gear pump motor 25, and the following is required for this attachment.

First, since the motor-side magnet 252 is magnet-coupled to the pump-side magnet 745, the motor-side magnet 252 receives an attractive force in the thrust direction (axial direction). The attachment of the motor-side magnet 252 requires a structure that can withstand this attractive force.

Second, when the distance between the motor-side magnet 252 and the pump-side magnet 745 changes, the transmission torque transmitted between these magnets changes. Then, the torque intended for the design may not be transmitted to the gear pump 74, which is not preferable. Therefore, the motor-side magnet 252 needs to be firmly fixed so as not to move in the axial direction of the rotating shaft 251.

Thirdly, in order to transmit the drive torque of the gear pump motor 25 to the large-diameter gear 742 of the gear pump 74, the motor side magnet 252 does not slip in the rotation direction of the rotation shaft 251 when the gear pump motor 25 rotates. There is a need to.

As a method of mounting the motor-side magnet that satisfies the requirements as described above, for example, there are the following methods.

FIG. 12A is a diagram for explaining an example of the shape of the magnet on the motor side. The left side of FIG. 12A is a front view of the motor side magnet 300 as an example of the motor side magnet, and the right side is a side sectional view of the motor side magnet 300.

For example, as shown in FIG. 12A, the motor-side magnet 300 has a hole 300h in the center of the front surface for passing the rotating shaft 251. Further, as shown in the side sectional view of FIG. 12A, the motor side magnet 300 has a boss 302. The front side in the front view of FIG. 12A corresponds to the left side in the side sectional view of FIG. 12A, and when attached to the rotating shaft 251 of the gear pump motor 25, the side far from the gear pump motor 25, that is, the gear pump 74. It will be on the side closer to. That is, in the side sectional view of FIG. 12A, the right side of the drawing is the side far from the gear pump 74.

The motor-side magnet 300 is attached to the shaft 251 by a boss 302, which is an attachment member having a back yoke function. Therefore, for example, in the central portion of the boss 302, as shown in the side sectional view of FIG. 12A, a hole for passing the rotating shaft 251 is provided in the same manner as the hole 300h. The boss 302 is provided with a pin 303 for fixing the motor-side magnet 300 to the rotating shaft 251. Although not shown, the rotary shaft 251 has a hole, and the motor side magnet 300 is attached to the rotary shaft 251 by fitting the tip of the pin 303 into the hole of the rotary shaft 251.

The mounting method using the motor-side magnet 300 illustrated in FIG. 12A has a problem that the motor-side magnet 300 has a large overall size due to the boss 302. That is, since the motor-side magnet 300 is large, the thickness of the main body 2 in the front-rear direction becomes thick, and as a result, the size of the entire beverage manufacturing apparatus 1 becomes large.

The motor-side magnet 252 in the beverage manufacturing apparatus 1 of the present disclosure solves the problems of the mounting method as described above. Hereinafter, the motor-side magnet 252 and the mounting method thereof in the beverage manufacturing apparatus 1 according to the embodiment of the present disclosure will be described in detail.

<1-8-2. How to attach the motor side magnet 252>
FIG. 12B is an exploded perspective view for explaining the motor-side magnet 252 according to the embodiment of the present disclosure. The motor-side magnet 252 has a hole 252h1 for passing the rotation shaft 251 along the cylindrical central axis. Further, as shown in FIG. 12B, the motor side magnet 252 has a hole 252h2 opened in a part of the side surface thereof. The hole 252h1 is an example of the first hole, and the hole 252h2 is an example of the second hole. The hole 252h2 is provided so as to penetrate from one outer peripheral side surface of the motor side magnet 252 to the outer peripheral side surface on the opposite side, for example, in a direction perpendicular to the central axis of the motor magnet 252.

The rotating shaft 251 of the pump motor 25 is provided with a hole 251h having a diameter substantially the same as the hole 252h2 of the motor-side magnet 252. Hole 251h is an example of a third hole. The hole 251h is, for example, a hole that penetrates the rotating shaft 251 in a direction perpendicular to the rotation center of the cylindrical rotating shaft 251.

A spring pin 253 is provided as a member for attaching the motor side magnet 252 to the rotating shaft 251 by being passed through the hole 252h2 of the motor side magnet 252 and the hole 251h of the rotating shaft 251 at the same time. The spring pin 253 is an example of a pin member, and the diameter of the spring pin 253 is formed to be substantially the same as the hole 252h2 of the motor side magnet 252 and the hole 251h of the rotating shaft 251.

The length of the spring pin 253 is set so as to be sufficiently longer than, for example, the diameter of the rotating shaft 251 and equal to or less than the diameter of the motor-side magnet 252. From the viewpoint of firmly fixing the motor-side magnet 252 by the rotating shaft 251, it is desirable that the length of the spring pin 253 is approximately the same as or slightly shorter than the diameter of the motor-side magnet 252.

The motor-side magnet 252 is a bond magnet obtained by finely crushing a ferrite magnet, a neodymium magnet, or the like and kneading it into a resin or the like. The reason for adopting a bond magnet for the motor side magnet 252 is that if a sintered magnet manufactured by baking magnetic powder is used, it is difficult to process because the magnet collapses when drilling holes, etc., and it is molded at the stage of baking. This is because a new mold or the like is required because it is necessary, and the cost increases. By adopting a bond magnet for the motor side magnet 252, the holes 252h1 and the holes 252h2 for passing the rotating shaft 251 can be easily created by molding or processing.

<1-9. Action / effect>
As described above, in the beverage manufacturing apparatus 1 according to the embodiment of the present disclosure, the motor-side magnet 252 is formed in a cylindrical shape, and the hole 252h1 (for passing the rotation axis along the central axis of the cylinder) ( The first hole) and the hole 252h2 (second hole) opened on the outer peripheral side surface of the cylinder, the rotating shaft 251 has the hole 251h (third hole), and the motor side magnet 252 , It is attached to the rotating shaft by a spring pin 253 (pin member) that passes through the hole 252h2 and the hole 251h at the same time.

With such a configuration, according to the beverage manufacturing apparatus 1 according to the embodiment of the present disclosure, the motor side magnet 252 is suitably attached to the rotary shaft 251 of the pump motor 25 without using an attachment member such as a boss. Can be done. Specifically, it can withstand the attractive force in the thrust direction (axial direction), can firmly fix the motor side magnet 252 so as not to move in the axial direction of the rotating shaft 251, and further, the motor for the pump. The motor-side magnet 252 can be attached to the rotation shaft 251 so that the motor-side magnet 252 does not slide with respect to the rotation direction of the rotation shaft 251 when the 25 is rotated.

Further, with the above configuration, the size of the motor-side magnet 252 (thickness in the front-rear direction of the beverage manufacturing apparatus 1) can be reduced, and the space saving of the entire beverage manufacturing apparatus 1 can be realized. Further, since the mounting member is not required, the manufacturing cost of the beverage manufacturing apparatus 1 can be reduced.

Further, in the beverage manufacturing apparatus 1 according to the embodiment of the present disclosure, the motor side magnet 252 is formed of a bond magnet. With such a configuration, according to the beverage manufacturing apparatus 1 according to the embodiment of the present disclosure, it is not necessary to prepare a mold or the like and perform molding in order to form holes 252h1 and holes 252h2 in the sintered magnet. , Manufacturing cost can be reduced. Further, since the bond magnet is mainly composed of resin or the like, holes 252h1 and holes 252h2 can be easily drilled by using existing technology.

<1-10. Modification example>
In the above-described embodiment, the hole 251h of the rotating shaft 251 penetrates the rotating shaft 251, but the present disclosure is not limited to this. That is, the hole 251h may be stopped halfway through the rotating shaft 251. In this case, the depth of the hole 251h may be formed so that the spring pin 253 is sufficiently fixed to the rotation shaft 251 when the spring pin 253 is inserted into the hole 251h.

Further, the position where the hole 252h2 is formed in the motor-side magnet 252 may be determined as follows, for example. 13A to 13D are diagrams for explaining a method of determining the position of the hole 252h2 of the motor side magnet 252.

The motor-side magnet 252 illustrated in FIGS. 13A and 13B has two poles, one north pole and one south pole, on the side surface (the right side surface in FIGS. 13A and 13B) to be coupled with the pump side magnet 745. It has a pole. Here, since the motor-side magnet 252 illustrated in FIGS. 13A and 13B is firmly coupled to the pump-side magnet 745, the magnetic field lines are configured to be emitted only from the coupling surface. Specifically, when different poles are arranged in the vertical direction of the coupling surface as shown in FIG. 13A, the magnetic field lines draw a U shape in the cross section as shown in FIG. 13B. The dotted line in FIG. 13B is a line illustrating the magnetic field line. In this case, since no magnetic field lines are emitted from the surface opposite to the surface coupled with the motor-side magnet 252 (the left surface in FIGS. 13A and 13B), the magnet does not work.

When the motor-side magnet 252 has such a magnetic field line, it is desirable that the hole 252h2 is provided at a position where the magnetic force line does not pass as much as possible, as shown in FIG. 13B, in order not to reduce the magnetic force of the motor-side magnet 252. In other words, it is desirable that the hole 252h2 is provided at a position along the boundary surface of the magnetic poles, for example, in FIG. 13B.

In FIG. 13B, the hole 252h2 is provided at a position where the magnetic field lines do not pass through, but if the hole 252h2 can be provided only at a position where the magnetic force lines are blocked, the hole 252h2 is on the motor side as close to the coupling surface as possible. It is desirable to provide it on the side surface of the magnet 252. This is because, as shown in FIG. 13B, the lines of magnetic force near the coupling surface (lines of magnetic force A) are shorter than the lines of magnetic force near the opposite surface (lines of magnetic force B), and the magnetic force decreases when the lines of magnetic force are blocked by the holes 252h2. This is because there are few.

On the other hand, the motor-side magnet 252 illustrated in FIGS. 13C and 13D has two north poles and two S poles on the side surface (the right side surface in FIGS. 13C and 13D) to be coupled with the pump-side magnet 745. It has four poles. As shown in FIG. 13C, when different poles are arranged in the vertical and horizontal directions of the coupling surface, the lines of magnetic force have a substantially fan shape centered on the corners of the coupling surface in the cross section as shown in FIG. 13D. Draw. The dotted line in FIG. 13D is a line illustrating the magnetic field line. In this case, as in FIGS. 13A and 13B, the magnet does not work as a magnet because no magnetic field lines are emitted from the surface opposite to the surface coupled with the motor side magnet 252.

Even when the motor-side magnet 252 has such magnetic lines of force, the hole 252h2 is provided on the side surface of the motor-side magnet 252 as close to the coupling surface as possible, as in the case of the two poles shown in FIGS. 13A and 13B. You may do so. In order to further suppress the decrease in magnetic force, the holes 252h2 may be provided near the surface opposite to the coupling surface through which the lines of magnetic force do not pass, as shown in FIG. 13D.

That is, in the present disclosure, it is desirable that the hole 252h2 of the motor-side magnet 252 is provided at a position where it passes through the central axis of the cylindrical motor-side magnet 252 and the magnetic field lines do not pass through.

Note that, in FIGS. 13B and 13D, the lines of magnetic force illustrated by the dotted lines are conceptual and do not accurately describe the lines of magnetic force that the motor-side magnet 252 should have. Further, in the present disclosure, the positions and shapes of the magnetic field lines included in the motor-side magnet 252 are not limited to the examples shown in FIGS. 13B and 13D. The positions of the holes 252h2 are also not limited to the positions illustrated in FIGS. 13A to 13D. It is desirable that the hole 252h2 is provided in a place where the magnetic field line of the motor side magnet 252 does not pass, and when it is difficult to provide the hole 252h2 in a place where the magnetic field line does not pass, the hole 252h2 is provided so that the magnetic field line blocked by the hole 252h2 is as short as possible. It should be done.

Further, in FIGS. 13C and 13D, a hole 252h2 is provided in a side surface portion corresponding to the S pole on the coupling surface of the motor side magnet 252, but the present disclosure is not limited to this. For example, the hole 252h2 may be provided on the side surface portion of the coupling surface of the motor-side magnet 252 corresponding to the north pole.

The present disclosure is useful for beverage production equipment having a milk former.

1 Beverage production equipment 2 Main body 3 Door 4 Button group 5 Canister 6 Milk cooler 7 Nozzle unit 8 Drip tray 9 Milk pack 10 Container 21 Coffee extraction unit 211 Hot water tank 212 Hot water pump 213 Filter 214 Hot water supply valve 215 Coffee side hot water supply piping 216 Lifting and lowering Equipment 217 Cylinder unit 218 Cap 219 Cylinder 2210 Piston 2211 Extraction hole 2212 Coffee liquid piping 2213 Mill 22 Steam supply section 221 Electromagnetic pump 222 Milk side hot water supply piping 223 Boiler 224 Steam piping 225 Three-way valve 23 Milk supply section 231 Milk supply piping 24 Air Supply unit 241 Air pump 242 Air supply piping 243 Air valve 25 Gear pump motor 251 Rotating shaft 251h hole 252 Motor side magnet 252h1 hole 252h2 hole 253 Spring pin 26 Valve motor 261 Rotating shaft 262 Motor side gear 300 302 Boss 303 Pin 71 Cover 72 Coffee Nozzle 73 Milk Former 74 Gear Pump 741 Case 742 Large Diameter Gear 743 Small Diameter Gear 744 Lid 745 Pump Side Magnet 746 Milk Inlet 747 Air Inlet 748 Milk Outlet 75 Branch 751 Inlet 752 1st Outlet 753 2nd outlet 754 Opening 76 Valve 761 Rotating body 762 1st ring groove 763 2nd ring groove 764 1st O ring 765 2nd O ring 766 Valve side gear 77 Cold milk nozzle 78 Heater 79 Milk flow path 710 Hot Milk nozzle

Claims (6)

1st gear and
2nd gear and
A case in which the first gear and the second gear are housed in the internal space,
The pump-side magnet built into the first gear and
A motor-side magnet that magnetically couples with the pump-side magnet,
A motor in which the motor-side magnet is attached to the rotating shaft,
Have,
The motor-side magnet is formed in a cylindrical shape, a first hole for passing the rotation shaft along a central axis of the motor-side magnet, the second being opened to the outer peripheral side surface of the motor-side magnets Has holes and
The rotating shaft has a third hole.
The motor-side magnet is attached to the rotating shaft by a pin member that simultaneously passes through the second hole and the third hole.
Beverage manufacturing equipment. The motor side magnet is formed of a bond magnet.
The beverage manufacturing apparatus according to claim 1. The pin member is a spring pin.
The beverage manufacturing apparatus according to claim 1 or 2. The length of the pin member is longer than the diameter of the rotating shaft and shorter than the diameter of the motor-side magnet.
The beverage manufacturing apparatus according to any one of claims 1 to 3. The second hole is opened so as to pass through a portion where the magnetic field lines of the motor-side magnet do not pass.
The beverage manufacturing apparatus according to any one of claims 1 to 4. The second hole is opened at a position where the magnetic field line of the motor-side magnet blocked by the second hole is as short as possible.
The beverage manufacturing apparatus according to any one of claims 1 to 4.

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