JP2004166658A - Apparatus for producing frozen dessert - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for producing frozen dessert through directly supplying mix from a raw material bag to a cooling cylinder without depending on gravity and removing to a hopper. <P>SOLUTION: This apparatus for producing frozen dessert has a keeping cool box 2 keeping cool a flexible mix raw material bag in which mix is held, a cooling cylinder 8 producing frozen dessert by cooling mix supplied from the mix raw material bag while stirring, an air pump 27, a mix raw material tube 34 for allowing the mix raw material bag to communicate with the inside of the cooling cylinder, and a jacket 31 set in the keeping cool box, holding the mix raw material bag and pressing from the outside. Sealed space between the pressing body of the jacket and a jacket main body is expanded by supply of compressed air from the air pump, and the pressing body presses the mix raw material bag. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a frozen dessert production apparatus for producing frozen desserts such as soft ice cream (soft ice cream).
[0002]
[Prior art]
Conventionally, this kind of frozen dessert manufacturing apparatus includes a cooling device including a compressor, a condenser, a capillary tube, a cooling cylinder, and a cooler provided in a hopper (mix tank). With this cooling device, the liquefied refrigerant is supplied to the cooler during the manufacture of frozen dessert. After cooling, the cooling cylinder and hopper are cooled. A beater is mounted in the cooling cylinder, and the mix in the cooling cylinder is cooled by the cooler and agitated by the beater to produce a frozen dessert such as a soft ice cream or sherbet (for example, Patent Document 1). reference).
[0003]
[Patent Document 1]
JP-A-10-271957
[Problems to be solved by the invention]
In this case, the mix is stored in a hopper, and the mix is poured from the hopper into a cooling cylinder by a mix supply device. This mix feeder was in the form of a pipe open at the upper end to the atmosphere and communicated with the inside of the hopper at the lower end inside the hopper, and the amount of mix supplied depended on the head difference in the mix feeder.
[0005]
That is, since the supply of the mix from the hopper to the cooling cylinder depends on gravity, there is a disadvantage that the supply amount is not stable. In addition, since the mix previously opened in the raw material bag is opened and injected into the hopper, there is a drawback that a hygienic problem occurs.
[0006]
Therefore, development of a frozen dessert manufacturing apparatus capable of producing a frozen dessert by directly supplying a mix from a raw material bag to a cooling cylinder without depending on gravity and without transferring the mix to a hopper has been desired. The present invention has been made to solve such a conventional technical problem.
[0007]
[Means for Solving the Problems]
That is, the frozen dessert production apparatus of the present invention produces a frozen dessert by cooling a cold storage box that keeps a flexible mixed raw material bag in which a mix is stored, and cooling while stirring the mix supplied from the mixed raw material bag. A cooling cylinder, a cooling device for cooling the cool box and the cooling cylinder, an air compression device, a mix supply passage for communicating the mix material bag with the inside of the cooling cylinder, and a mix material bag provided in the cool box. Since the pressing means for pressing from the outside is provided, the mix is kept cool in the cool box together with the mixed raw material bags, and the mixed raw material bags are pressed from the outside by the pressing means, forcing the mix from within the mixed raw material bags. It can be extruded and directly supplied to the cooling cylinder via the mix supply passage, so that frozen dessert can be manufactured.
[0008]
This will eliminate the need for a gravity-dependent mix supply system and enable automatic supply of a stable mix, while also solving hygiene issues by supplying the mix directly from the mix material bag to the cooling cylinder. Will be able to In addition, since compressed air is supplied into the cooling cylinder via the air supply passage, overrun of the frozen dessert can be obtained without any trouble.
[0009]
In particular, since the pressing means is expanded by the compressed air supplied from the air compression device through the pressurized air passage and presses the mixed raw material bag, the structure of the mixed raw material bag itself does not need to be changed, Normal mix raw material bags can be used. Thereby, the usability and versatility are enhanced. In addition, since the cool box itself does not need to be airtight with respect to the compressed air, it is possible to simplify the structure of the frozen dessert production apparatus and reduce the production cost.
[0010]
In the frozen dessert manufacturing apparatus according to the second aspect of the present invention, in addition to the above, the pressing means is configured such that the mixed raw material bag is housed so as to be able to be delivered and a jacket surrounding the mixed raw material bag. Handling such as replacement becomes easy. Further, the jacket includes a jacket main body, and a flexible pressing body provided along the mixed raw material bag so as to form a closed space between the jacket main body and the pressurized air passage. Is designed to supply compressed air between the jacket body and the pressing body, so that the mix can be smoothly pushed out of the mixed material bag. Further, in this case, since the jacket surrounds the periphery of the mixed raw material bag, even in the event that the mix leaks from the mixed raw material bag, it is possible to prevent or minimize the contamination in the cool box. .
[0011]
In the frozen dessert manufacturing apparatus according to the third aspect of the present invention, since the outlet of the mixed material bag is arranged downward in addition to the above inventions, the mix in the mixed material bag can be collected by its own weight in the direction of the outlet. Can be further smoothly extruded.
[0012]
In the frozen dessert manufacturing apparatus according to the fourth aspect of the present invention, in addition to the above, since the mixed raw material bags are arranged such that the outlet of the mixed raw material bags is located at the lowermost portion, the mix in the mixed raw material bags is collected at the outlet by its own weight. So that the mix can be pushed out more smoothly.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partially longitudinal perspective view of a frozen dessert manufacturing apparatus SM to which the present invention is applied, FIG. 2 is a configuration diagram relating to a mix supply of the frozen dessert production device SM, and FIG. FIG. 4 shows a block diagram of an electric circuit of the frozen dessert manufacturing apparatus SM.
[0014]
The frozen dessert manufacturing apparatus SM of the embodiment is an apparatus for manufacturing and selling frozen desserts such as soft ice cream and sherbet (shake) (in the embodiment, soft ice cream is manufactured). Is provided with a heat-insulating cool box 2 for storing and cooling a mixed raw material bag 5 containing a raw mix of soft cream (a mix serving as a frozen dessert raw material such as soft cream or sherbet). The interior 2A of the cool box 2 is open at the front, and the front opening is closed by a rotatable heat insulating door 3 so as to be openable and closable. Be released. Reference numeral 33 denotes a cool box open / close switch for detecting the opening / closing of the heat insulating door 3.
[0015]
On the other hand, a cooler cooler 4 and a blower (not shown) are arranged on the ceiling portion of the cooler 2 inside the cooler 2A, and the cool air cooled by the cooler cooler 4 is circulated into the cooler 2A by the blower. The mixed raw material bag 5 in the cool box 2, the jacket 31 (described later) that stores the mixed raw material bag 5, and peripheral components described below are cooled to a predetermined temperature.
[0016]
In the cool box 2, a holding table 6 for holding the jacket 31 and the mixed material bag 5 at a low angle on the front side is provided. In addition, a bag pressurizing pipe 7 (shown in FIG. 2) forming a pressurized air passage is drawn out from the inner wall of the cool box 2 into the inside 2A of the cool box. Further, a mix inlet 9 of a cooling cylinder 8, which will be described later, is provided on the bottom wall of the inside 2A of the cool box 2 so as to open.
[0017]
Here, FIG. 7 is a side view of the mixed raw material bag 5, and FIG. 8 is a sectional view thereof. The mixed material bag 5 is, for example, a flexible resin bag on which aluminum is vapor-deposited. On one side of the mixed material bag 5, a hard resin outlet member 22 (when not in use) communicates the inside of the mixed material bag 5 with the outside. Is attached with an outlet of the mixed raw material bag 5 sealed with a sealing material, and a predetermined amount of a raw material mix (indicated by M in FIG. 8) is sealed therein.
[0018]
Then, the mixed raw material bag 5 is stored in the cool box 2 in a state of being stored in the jacket 31 constituting the pressing means. FIG. 9 is a plan view of the jacket 31, and FIG. 10 is a sectional view of a state in which a new mixed material bag 5 is stored. The jacket 31 has a predetermined strength, is made of a sheet material (polyester) of a flexible and hardly stretchable material, and the same material whose periphery is welded inside one surface of the jacket body 21. And a hard resin communication port attached to one surface of the jacket main body 21 so as to communicate with a non-adhesive portion described later between the pressing body 23 and the jacket main body 21. And a member 24 (FIG. 10).
[0019]
The other surface of the jacket main body 21 is open at the center over substantially the entire width, and this opening is opened and closed by a fastener 32. Furthermore, an outlet hole 25 through which the outlet member 22 of the mixed raw material bag 5 is exposed is formed on the other surface of the jacket body 21 (FIG. 9). The dimensions of the jacket main body 21 are such that a new mixed raw material bag 5 (containing a predetermined amount of raw material mix) can be housed inside the pressing body 23 in a state of being in close contact with one surface of the jacket main body 21.
[0020]
The pressing body 23 and the jacket body 21 are in a non-adhered state except for the periphery of the pressing body 23, whereby a closed space can be formed between the pressing body 23 and the jacket body 21. The communication port member 24 communicates between the pressing body 23 and the jacket body 21 (closed space) and the outside. Compressed air (indicated by AI in FIG. 11) can be supplied to the closed space between the pressing body 23 and the jacket body 21 (FIG. 11).
[0021]
Then, the zipper 32 of the jacket body 21 of the jacket 31 is opened, and the mix raw material bag 5 containing the mix as described above is stored in the jacket 31 through the opening (FIG. 10). Then, the fastener 32 is closed. As described above, the mixed raw material bag 5 is stored in the jacket 31 so as to be freely delivered, and the mixed raw material bag 5 is surrounded by the jacket 31 in the stored state. At the same time, the outlet member 22 is exposed to the outside through the outlet hole 25 of the jacket body 21. In this state, the pressing body 23 comes into contact with the mixed raw material bag 5. It is assumed that the take-out hole 25 is attached to a position corresponding to the outlet member 22 in a state where the mixed raw material bag 5 is stored in the jacket 31. In this state, the outlet member 22 and the zipper 32 are placed in the interior 2A of the cool box 2 with the lower side facing down, and the holding table 6 is held in a state inclined forward and downward.
[0022]
At this time, the jacket 31 (and the mixed raw material bag 5) is placed on the holding base 6 so that the outlet member 22 faces downward on the front side. As a result, the outlet member 22 is located at the lowermost part of the mixed raw material bag 5 in the held state. Moreover, by arranging in this manner, even when the jacket 31 is swollen, it is possible to maintain a sufficient space between the jacket 31 and the ceiling of the inside 2A and to secure the circulation of cool air. Further, connection with each pipe or tube is also facilitated. Then, one end of the bag pressurizing pipe 7 is detachably connected to the communication port member 24, and is communicated between the pressing body 23 and the jacket body 21 (closed space). Further, one end of a mix raw material tube 34 constituting a mix supply passage is detachably connected to the outlet member 22. The mixed material tube 34 is constituted by a flexible tube.
[0023]
On the other hand, in FIG. 1, reference numeral 8 denotes the above-mentioned cooling cylinder for producing a frozen dessert by rotating and stirring the mix flowing from the mix inlet 9 by a beater 10, and a cylinder cooler 11 is mounted around the cooling cylinder. The beater 10 is rotated via a beater motor 12, a drive transmission belt, a speed reducer 13, and a rotating shaft. The manufactured frozen dessert is operated by operating a take-out lever 15 disposed on a freezer door 14 that opens and closes the front opening of the cooling cylinder 8 so that the plunger 16 moves up and down, and an extraction path (not shown) is opened. At the same time, the beater 10 is taken out by being rotationally driven. The freezer door 14, the take-out lever 15, and the plunger 16 constitute a frozen dessert extraction unit.
[0024]
The freezer door 14 is made of transparent glass or transparent hard resin to form a see-through portion. The interior of the cooling cylinder 8 can be seen through the freezer door 14 from the front. A permanent magnet 36 is embedded in a surface of the freezer door 14 on the main body 1 side, and a reed switch 37 is attached to a front surface of the main body 1 at a position corresponding to the permanent magnet 36. When the freezer door 14 is attached to the main body 1 and closes the front opening of the cooling cylinder 8, the contact of the reed switch 37 is closed by the permanent magnet 36, the freezer door 14 is removed, and the front surface of the cooling cylinder 8 is removed. When the opening is opened, the contact of the reed switch 37 is opened.
[0025]
In addition, a proximity switch (proximity sensor) 38 is attached to the front surface of the main body 1 at a position corresponding to a position below the takeout lever 15 constituting the frozen dessert extraction unit. The proximity switch 38 detects that a container such as a cone or paper cup for serving frozen dessert has been addressed to the lower side of the take-out lever 15 using infrared rays or sound waves.
[0026]
Further, as shown in FIG. 1, a washing hose 39 is attached to the inside 2A of the cool box 2. The washing hose 39 is provided for discharging washing water into the cooling cylinder 8 when washing the inside of the cooling cylinder 8. The washing hose 39 descends through the main body 1 and is drawn to the side surface. 41. The cleaning water pipe 41 is connected to a water pipe (not shown). Further, an opening / closing plug 42 is provided in the middle of the cleaning water pipe 41 and disposed on the front surface of the main body 1. The opening / closing stopper 42 always closes the cleaning water pipe 41. When the cooling cylinder 8 is cleaned, it is turned to open the cleaning water pipe 41.
[0027]
A connector 43 is attached to the tip of the cleaning hose 39, and the connector 43 can be detachably connected to the mix inlet 9 of the cooling cylinder 8. In this case, the connector 43 always closes the opening at the tip of the cleaning hose 39 (therefore, no cleaning water flows out even if the opening / closing stopper 42 is opened in this state) and is opened when connected to the mix inlet 9. Has a mechanism. Thereby, the work of connecting to the mix inlet 9 becomes extremely easy.
[0028]
A compressor 18, a condenser 20, a four-way valve 19, and the like constituting the cooling device R are housed and installed in a lower portion of the main body 1. The four-way valve 19 is for allowing a high-temperature refrigerant to flow through the cylinder cooler 11 to perform thawing and sterilization.
[0029]
Next, in FIG. 2, reference numeral 27 denotes an air pump which constitutes an air compression device, and a discharge pipe 28 of the air pump 27 is connected to a distributor 46. The other end of the bag pressurizing pipe 7 is connected to the distributor 46. Further, the distributor 46 is connected to a sensor (pressure sensor) 47 in the air circuit constituting pressure detecting means and an exhaust pipe 49, and the exhaust pipe 49 is connected to an exhaust electromagnetic valve 48 in the air circuit constituting exhaust means. Air pump protection and air circuit exhaust) are connected.
[0030]
Furthermore, one end of an air circuit 51 as an air supply passage is connected to the distributor 46, whereby the bag pressurizing pipe 7, the air circuit 51, the air pump 27, and the sensor 47 in the air circuit are connected via the distributor 46. And the exhaust pipe 49 are mutually connected in a branched connection manner. The air circuit 51 is provided with an air circuit opening / closing solenoid valve 52 as a flow path opening / closing means and an air filter 53. The air filter 53 captures and removes foreign matter and various bacteria in the compressed air flowing into the air circuit 51.
[0031]
The other end of the mixed material tube 34 and the other end of the air circuit 51 are detachably connected to two inlets of a Y-type mixer 57 as a merging passage member via check valves 54 and 56, respectively. In each of the check valves 54 and 56, the direction of the Y-type mixer 57 is set to the forward direction. The outlet of the Y-type mixer 57 is detachably connected to the mix inlet 9 of the cooling cylinder 8. In addition, the mixed material bag 5, the jacket 31, the mixed material tube 34, the other end of the air circuit 51, one end of the bag pressurizing pipe 7, and the Y-type mixer 57 are located in the cold storage 2A of the refrigerator 2, It will be kept cool.
[0032]
Here, a specific connection structure of the bag pressurizing pipe 7, the mixed raw material tube 34, the air circuit 51, and the Y-type mixer 57 will be described with reference to FIG. The bag pressure pipe 7 is also formed of a flexible tube, and is detachably connected to the communication port member 24 of the jacket 31 by a one-touch joint 61. Further, one end of the mixed material tube 34 is detachably attached to the outlet member 22 of the mixed material bag 5 facing the outside from the inside of the jacket 31 via an O-ring 64 by a mounting nut 62 and a connection pipe 63 having an arrowhead shape. Connected. Although the outlet member 22 is initially sealed with a sealing material as described above, the O-ring 64 seals the inside of the outlet member 22 by inserting the connection pipe 63, and at the same time or thereafter, the sealing material is applied at the tip. Will be broken.
[0033]
The other end of the mixed material tube 34 is detachably connected to one inlet of a Y-type mixer 57 by a mounting nut 66 and a connection pipe 67 (with a built-in check valve 54). Since the mixed material tube 34 is a flexible tube as described above, it can be easily sealed by pinching it with the pinch 68. However, it is assumed that the pinch 68 is open during normal use.
[0034]
On the other hand, the other end of the air circuit 51 is detachably connected to the other inlet of the Y-type mixer 57 by a connection pipe 69 (with a built-in check valve 56). The outlet of the Y-type mixer 57 is detachably connected to the mix inlet 9 of the cooling cylinder 8 via an O-ring 71. The detachable connection facilitates washing of the mixed material tube 34, the Y-type mixer 57, the check valves 54 and 56, and the like.
[0035]
Next, in FIG. 4, reference numeral 73 denotes a general-purpose microcomputer which constitutes a control means. The input of the microcomputer 73 is connected to the cooler open / close switch 33, the air circuit sensor 47, the proximity switch 38, and the reed switch 37. Have been. Further, to the input of the microcomputer 73, a pull-down switch (operation switch) 76 and a cooling switch 77 provided on the control panel 74 of the main body 1 are further connected.
[0036]
Further, the output of the microcomputer 73 includes, in addition to the above-mentioned frozen dessert production unit including the compressor 18 and the beater motor 12 of the cooling device R, the exhaust electromagnetic valve 48 in the air circuit, the air pump 27, and the air circuit opening / closing electromagnetic valve 52. Is connected. Further, a sold-out display lamp 78 provided on the operation panel 74 is connected to an output of the microcomputer 73.
[0037]
Next, the operation of the above configuration will be described. When a power plug (not shown) of the frozen dessert manufacturing apparatus SM is connected to a power source and turned on, the microcomputer 73 first determines whether or not the contact of the reed switch 37 is closed. If the freezer door 14 is attached and the front opening of the cooling cylinder 8 is closed, and the permanent magnet 36 closes the contact of the reed switch 37, the subsequent operation can be started. If it is not attached and the contact of the reed switch 37 is open, the start of the subsequent operation is prohibited and, for example, the sold-out display lamp 78 is blinked to display an alarm. This prevents the user from forgetting to attach the freezer door 14 or starting the operation in a state where the freezer door 14 is not properly attached, and prompts the user to attach the freezer door 14.
[0038]
Next, with reference to the timing charts of FIG. 5 and FIG. 6, the operations of supplying the mix, manufacturing the frozen dessert and extracting the frozen dessert will be described. In addition, the mixed raw material bag 5 is set in the refrigerator 2A in a state of being stored in the jacket 31 as described above, and the bag pressurizing pipe 7, the mixed raw material tube 34, and the Y-type mixer 57 are also shown in FIG. Connect as shown. However, the air circuit 51 including the check valve 56 is detached from the Y-type mixer 57 at this time when pull-down is started.
[0039]
(1) Initial State In the initial state after the power is turned on in FIG. 1, the microcomputer 73 first opens the exhaust electromagnetic valve 48 in the air circuit for a predetermined period (5 seconds in the embodiment). Then, after the mixed material bag 5 is set in the refrigerator 2A of the cool box 2 as described above, the microcomputer 73 detects that the heat insulating door 3 is closed based on the detection operation of the cool box open / close switch 33. Drives the air pump 27. Thereafter, when the heat insulating door 3 of the cool box 2 is opened, the microcomputer 73 stops the air pump 27 based on the detection operation of the cool box opening / closing switch 33, and also performs the exhaust electromagnetic valve in the air circuit for a predetermined period (5 seconds). 48 is opened to exhaust air from the air circuit 51 and the bag pressurizing pipe 7.
[0040]
That is, the microcomputer 73 stops the air pump 27 when the heat insulating door 3 of the cool box 2 is opened, and allows the operation of the air pump 27 only when the heat insulating door 3 is closed. Thereby, the safety at the time of attachment / detachment of a pipe at the time of replacement of the mixed raw material bag 5 is improved. In particular, when the heat insulating door 3 is opened, the compressed air is exhausted from the air circuit 51 and the bag pressurizing pipe 7 by opening the air solenoid valve 48 in the air circuit. Can be reliably avoided.
[0041]
After the air pump 27 is operated in this initial state, the sensor 47 in the air circuit is connected to the bag pressurizing pipe 7 (communicated with the bag pressurizing pipe 7) by the distributor 46 even after 3 minutes. If the pressure rise in the air circuit 51 is not detected (including the closed space between the jacket body 21 and the pressing body 23 of the jacket 31) and the air circuit 51 is not detected, the air pump 27 is stopped and the sold-out display lamp 78 is blinked to give an alarm. .
[0042]
(2) Pull-down mode Next, when the user turns on the pull-down switch 76 (presses for less than 2 seconds), the microcomputer 73 enters the pull-down mode and starts pull-down. In this pull-down mode, the microcomputer 73 operates the air pump 27 to connect the bag pressurizing pipe 7 (the jacket body 21 of the jacket 31 communicating with the bag pressurizing pipe 7 and the pressing body 23) with the distributor 46. Compressed air is supplied into the air circuit 51 (including a closed space between them) and the air circuit 51 (the air circuit opening / closing solenoid valve 52 is closed in the pull-down mode).
[0043]
When the air pressure detected by the sensor 47 in the air circuit rises to the set value, the microcomputer 73 stops the air pump 27 based on the output of the sensor 47 in the air circuit. Thereafter, the microcomputer 73 starts counting of a three-minute timer (a predetermined value not limited to three minutes) provided as its own function.
[0044]
When compressed air is sent from the bag pressurizing pipe 7 into the closed space between the pressing body 23 of the jacket 31 and the jacket body 21, a constant pressure is applied to the mixed raw material bag 5 from the outside. That is, as shown in FIG. 11, the closed space between the pressing body 23 and the jacket main body 21 expands and its volume is expanded, so that the mixed raw material bag 5 is pressed from above by the pressing body 23 and the mixed raw material bag 5 Is pushed out from the outlet member 22 located on the lower side to the mix raw material tube 34. At this time, since the outlet member 22 is oriented downward and held so as to be located at the lowermost portion of the mixed raw material bag 5, the raw material mix is gathered near the outlet member 22 by its own weight. Thereby, even if the mix in the mix raw material bag 5 is reduced, the extrusion is performed smoothly.
[0045]
The mix pushed out to the mix material tube 34 in this way flows into the cooling cylinder 8 from the mix inlet 9 through the check valve 54 and the Y-type mixer 57. At this time, since the air circuit 51 including the check valve 56 is disconnected, the air in the cooling cylinder 8 flows out from the other outlet of the Y-type mixer 57. Thereby, the mix also flows into the cooling cylinder 8 smoothly.
[0046]
Since the volume of the closed space between the pressing body 23 and the jacket main body 21 is increased by the outflow of the mix from the mix raw material bag 5, the air pressure in the pipe from the bag pressurizing pipe 7 to the distributor 46 is also reduced. When the sensor 47 in the air circuit detects that the pressure has decreased to the predetermined lower limit, the microcomputer 73 operates the air pump 27 to restart the supply of the compressed air. By repeating this, the microcomputer 74 sets the air pressure detected by the air circuit sensor 47 (the air pressure in the closed space between the pressing body 23 of the jacket 31 and the jacket body 21) between the set value and the lower limit (the set value and the lower limit). (Predetermined pressure in the range of values).
[0047]
Thereafter, this is continued until the count of the three-minute timer ends, and the mix is fed into the cooling cylinder 8. Thereby, the mix is stored in the cooling cylinder 8. When the count of the three-minute timer ends, the microcomputer 73 stops the operation of the air pump 27, opens the air solenoid valve 48 in the air circuit for 5 seconds, and once discharges the compressed air. The user checks the liquid level of the mix in the cooling cylinder 8 via the transparent freezer door 14, and if the liquid level does not reach the predetermined liquid level, continues to push down the pull-down switch 76 (ON for 2 seconds or more).
[0048]
When the pull-down switch 76 is continuously turned on, the microcomputer 73 operates the air pump 27 to start supplying compressed air again, and the air pressure (pressing the jacket 31) detected by the sensor 47 in the air circuit as described above. The air pressure in the closed space between the body 23 and the jacket body 21 is maintained at a set value. As a result, the mix is again supplied from the mix raw material bag 5 into the cooling cylinder 8. Then, when the user visually confirms that the mix in the cooling cylinder 8 has been stored to the predetermined liquid level, and releases the pull-down switch 76 (OFF), the microcomputer 73 stops the air pump pump 27, The air solenoid valve 48 in the air circuit is opened to discharge the compressed air in the closed space between the pressing body 23 of the jacket 31 and the jacket body 21. As a result, the supply of the mix is stopped, and the mix is stored in the cooling cylinder 8 to a predetermined liquid level.
[0049]
By providing such a pull-down mode in the microcomputer 73, the mix can be stored in the cooling cylinder 8 smoothly when the store is opened. In particular, since the pull-down switch 76 can be provided to start the pull-down manually, the usability is improved.
[0050]
In the above embodiment, the mix is stored in the cooling cylinder 8 up to a predetermined liquid level by continuously pressing the three-minute timer and the pull-down switch 76 while viewing the inside of the cooling cylinder 8 from the freezer door 14. However, the present invention is not limited to this, and a liquid level sensor may be provided at a predetermined liquid level of the cooling cylinder 8 to perform automatic control. In that case, the microcomputer 73 enters the pull-down mode based on the operation of the pull-down switch 76, starts the pull-down, and based on the output of the liquid level sensor, when the mix in the cooling cylinder 8 reaches the predetermined liquid level, Similarly, the air pump 27 is stopped, and the exhaust electromagnetic valve 48 in the air circuit is opened to terminate the supply of the mix. According to such control, the operation of storing the mix up to the predetermined liquid level in the cooling cylinder 8 after the pull-down switch 76 is instructed to start pull-down can be automated.
[0051]
After the mix is stored to the predetermined liquid level in the cooling cylinder 8 in this manner, the heat insulating door 3 is opened, and the air circuit 51 is connected to the other inlet of the Y-type mixer 57 in the inside 2A of the cool storage 2 (reverse) The stop valve 54 is also attached). Then, the heat insulating door 3 is closed. When the heat insulating door 3 is opened, the microcomputer 73 stops the air pump 27 as described above and opens the air solenoid valve 48 in the air circuit to discharge the compressed air. Is closed, the air pump 27 is operated again to operate the air pressure detected by the sensor 47 in the air circuit (the bag pressurizing pipe 7 including the closed space between the pressing body 23 of the jacket 31 and the jacket body 21, the distributor 46, and the air). The air pressure to the air circuit opening / closing solenoid valve 52 in the circuit 51) is raised to a set value.
[0052]
When the air pressure detected by the air circuit sensor 47 rises to a set value, the microcomputer 73 opens the air circuit opening / closing solenoid valve 52 for a predetermined period (for example, 5 seconds) and compresses the air circuit 51 into the air circuit 51 reaching the Y-type mixer 57. Send in air. Due to the pressure of the compressed air flowing into the cooling cylinder 8 from the air circuit 51 via the Y-type mixer 57, the flow of the mix from the mix material tube 34 to the cooling cylinder 8 is prevented.
[0053]
At this time, an overrun of the frozen dessert (a state in which air is mixed in the dessert and the bulk increases) is obtained by the amount of the compressed air flowing into the cooling cylinder 8, but the dessert is stored in the cooling cylinder 8 as described above. Since the liquid level of the mix to be mixed can be regulated to a predetermined liquid level by operating the pull-down switch 76 and the position of the liquid level sensor, the amount of air in the cooling cylinder 8 can also be regulated. Can be set to.
[0054]
Further, since the compressed air flowing into the cooling cylinder 8 at this time has passed through the air filter 53, foreign matters and various germs contained in the air are captured by the air filter 53. This makes it possible to avoid the inconvenience of foreign matter and various germs entering the cooling cylinder 8 together with the compressed air, and to reliably perform sanitary management.
[0055]
Further, since the check valve 54 is provided on the mix material tube 34, the compressed air entering the Y-type mixer 57 from the air circuit 51 flows into the jacket body 21 of the jacket 31 via the mix material tube 34. Inconvenience is prevented.
[0056]
Furthermore, as described above, after the mixed raw material tube 34 and the air circuit 51 are once merged by the Y-type mixer 57, the mixed raw material tube 34 and the air circuit 51 are connected to the cooling cylinder 8 from the mix inlet 9. Both the supply of the mix and the supply of the air for overrun can be performed from a single mix inlet 9, so that the structure of the cooling cylinder 8 can be simplified.
[0057]
Thus, the pull-down mode ends. In this state, the operation of the cooling switch 77 is waited. Note that the microcomputer 73 counts and holds the pull-down time required for storing the mix in the cooling cylinder 8 to a predetermined liquid level as described above from the time when the pull-down switch 77 is first operated. In this case, when the pull-down switch 77 is visually operated to store the mix to a predetermined liquid level as described above, the pull-down time counting is terminated when the pull-down switch 77 is finally released, and the liquid is stored as described above. When the level sensor stores the mix up to the predetermined level, the counting of the pull-down time ends when the level sensor detects the predetermined level of the mix.
[0058]
(3) Normal sales mode Next, moving to FIG. 6, when the cooling switch 77 is turned on (pushed) by the user, the microcomputer 73 confirms that the freezer door 14 is normally attached and closed as described above. As a condition, the compressor 18 of the cooling device R is operated to start the cooling operation. When the compressor 18 is operated, the refrigerant condensed in the condenser 20 is supplied to each of the coolers 4 and 11 via a decompression device (not shown), where the refrigerant evaporates to exert a cooling function. Thereby, the mix in the mixed raw material bag 5 in the refrigerator 2A of the refrigerator 2 is kept cool. Further, components such as the jacket 31, the mixed material tube 68, the other end of the air circuit 51, and the Y-type mixer 57 in the interior 2A (a portion surrounded by a two-dot chain line in FIG. 2) are also kept cool. Therefore, as will be described later, the temperature of the mix or the compressed air flowing into the cooling cylinder 8 does not rise in the process of passing through them.
[0059]
On the other hand, in the cooling cylinder 8, the mix is cooled to the freezing temperature by the cylinder cooler 11, and the microcomputer 73 rotates the beater 10 by the beater motor 12, whereby the semi-cured frozen dessert ( Soft serve) is manufactured. Thereafter, the sales standby state is established.
[0060]
In this state, when the user takes, for example, a cone (container) below the take-out lever 15 and approaches the proximity switch 38, the proximity switch 38 detects the cone and turns ON (sales detection). When the proximity switch 38 is turned on, the microcomputer 73 starts counting of a timer for sales detection 3 seconds (a predetermined period not limited to 3 seconds) provided by itself. Then, when the state is continued for 3 seconds and the count of the timer ends, that is, when the proximity switch 38 continuously detects the cone for 3 seconds, the microcomputer 73 rotates the beater 10. When the user operates the take-out lever 15, the plunger 16 is raised as described above, so that the ice cream (soft cream) is pushed out by the beater 10 into an extraction path (not shown), and is extracted into corn.
[0061]
As described above, since the rotation of the beater 10 is controlled by using the proximity switch 38, it is not necessary to provide a take-out switch using an arm that is interlocked with the vertical movement of the plunger 16, unlike the related art, and the number of parts can be reduced. Since the mechanism is simplified, a failure hardly occurs. In addition, since the beater 10 is rotated when the cone is continuously detected for a predetermined period (3 seconds), malfunctions caused when the hand is accidentally held near the proximity switch 8 are prevented. it can.
[0062]
When the take-out lever 15 is returned, the plunger 16 descends and the extraction path is closed. When the cone is released from the proximity switch 38, the microcomputer 73 stops the beater 10. Thereby, the extraction of the frozen dessert is stopped. Since the pressure is reduced by extracting the frozen dessert from the inside of the cooling cylinder 8, the inside of the mix raw material bag 5 is passed through the mix raw material tube 34, the check valve 54, and the Y-type mixer 57 to the mix inlet 9 into the cooling cylinder 8. The mix will flow in and will be replenished.
[0063]
In this case, since the air circuit 51 is provided with the check valve 56, the inconvenience that the mix entering the Y-type mixer 57 from the mix raw material tube 34 flows into the air circuit 51 at this time is avoided. Therefore, there is no need to clean the inside of the air circuit 51 upstream of the check valve 56.
[0064]
On the other hand, the microcomputer 73 opens the air circuit opening / closing solenoid valve 52 a seconds (delay time) after b seconds (predetermined period) after the sales detection. When the air circuit 51 is opened by the air circuit opening / closing solenoid valve 52, the pressure of the compressed air flowing into the cooling cylinder 8 from the air circuit 51 via the Y-type mixer 57 causes the mixing from the mixed material tube 34 to the cooling cylinder 8. Is stopped, and stops as described above. That is, by opening the air circuit opening / closing solenoid valve 52 with a delay from the start of the extraction of the frozen dessert from the cooling cylinder 8, the mix can be refilled into the cooling cylinder 8 from the mix raw material tube 34.
[0065]
Although the air circuit opening / closing solenoid valve 52 is continuously opened for b seconds in the embodiment of FIG. 6, the air circuit opening / closing solenoid valve 52 may be opened and closed intermittently a plurality of times after a seconds.
[0066]
Here, the replenishment amount of the mix at this time is determined by the delay time of the a-second, and the amount of the mix flowing into the cooling cylinder 8 during the delay time depends on the viscosity of the mix. In other words, for the same delay time, the replenishment amount decreases when the viscosity of the mix is high, and increases when the viscosity is low. On the other hand, when the viscosity of the mix is high, the time required for the above-described pull-down (pull-down time) is long, and when the viscosity is low, the time is short.
[0067]
Therefore, the microcomputer 73 extends the delay time of a seconds when the pull-down time is long and shortens the delay time when the pull-down time is short, based on the pull-down time counted and held as described above. As a result, the amount of the mix to be replenished into the cooling cylinder 8 with the extraction of the frozen dessert can be made substantially constant regardless of the viscosity of the mix. And the mixing shortage in the cooling cylinder 8 can be avoided.
[0068]
Here, the microcomputer 73 controls ON / OFF of the air pump 27 so as to maintain the pressure detected by the sensor 47 in the air circuit at the above-mentioned set value. With the extraction of the frozen dessert as described above, the mix flows out of the mix material bag 5, and the air also flows into the cooling cylinder 8 from the air circuit 51, whereby the pressure detected by the air circuit sensor 47 gradually increases. Although the pressure decreases, the pressure decreases to the lower limit in approximately five extractions, and the air pump 27 is operated.
[0069]
Therefore, in most cases except for the rare case where extraction is performed six or more times continuously, the air pump 27 is not operated while the air circuit opening / closing solenoid valve 52 is open for b seconds described above. Therefore, during this b seconds, the compressed air in the closed space between the pressing body 23 of the jacket 31 and the jacket body 21 enters the air circuit 51 via the bag pressurizing pipe 7 and the distributor 46, and opens and closes the air circuit. It flows into the cooling cylinder 8 via the solenoid valve 52, the air filter 53 and the Y-type mixer 57.
[0070]
The compressed air in the closed space between the pressing body 23 of the jacket 31 and the jacket main body 21 is air cooled in the interior 2 </ b> A of the cold storage 2. That is, compressed air having a low temperature is supplied from the air circuit 51 into the cooling cylinder 8, so that the volume is not bulky, which is advantageous for overrun.
[0071]
Also, by sealing the air pressure in the closed space between the pressing body 23 of the jacket 31 and the jacket body 21 using the air pump 27 and the sensor 47 in the air circuit, the volume of the closed space between them is reduced. Since the mix stored in the mix raw material bag 5 is extruded into the mix raw material tube 34, automatic supply of the mix from the jacket body 21 to the cooling cylinder 8 can be realized. This eliminates the conventional method of supplying a mix that depends on gravity using a mix supply pipe, thereby realizing a stable automatic supply of a mix, and at the same time, mixing the mix directly from a mix material bag 5 into a cooling cylinder 8. Supply can also solve hygiene problems.
[0072]
Further, the air pressure in the closed space between the pressing body 23 of the jacket 31 and the jacket body 21 is maintained at a predetermined pressure between the set value and the lower limit by using the air pump 27 and the sensor 47 in the air circuit. In advance, the mix is pushed out of the mix material bag 5 into the mix material tube 34 by the air pressure and supplied to the cooling cylinder 8, and the air circuit opening / closing solenoid valve 52 is opened to allow the compressed air from the air circuit 51 to flow. As a result, the replenishment of the mix from the mix material tube 34 is stopped, so that there is no need to provide an electromagnetic valve or the like for controlling the supply of the mix on the mix material tube 34 side. This makes the cleaning operation extremely easy.
[0073]
(4) When the selling operation as described above is performed and the mix in the mixed raw material bag 5 is exhausted, the mix to be replenished even if the ice confection is extracted after the sale is detected is lost. The change in the pressure detected by the sensor no longer occurs or is extremely small. In this embodiment, when the pressure change after the sale is detected, the microcomputer 73 determines that the product is sold out, and continuously lights the sold-out display lamp 78 (ON). The operation of the air pump 27 also stops.
[0074]
(5) Bag Replacement When the user confirms that the mix is sold out by turning on the sold-out display lamp 78 and opens the heat insulating door 3 for replacement, the microcomputer 73 operates the air circuit exhaust solenoid valve 48 for 5 seconds as described above. Open to discharge compressed air. Thereafter, the bag pressurizing pipe 7 and the mixed raw material tube 34 are removed, and the empty mixed raw material bag 5 is taken out together with the jacket 31. At this time, the mixed raw material tube 34, the mounting nuts 66 and 62, the connection pipe 63, and the O-ring 64 are washed.
[0075]
Then, the fastener 32 is opened, the empty mixed material bag 5 is taken out from the jacket 31, a new mixed material bag 5 is stored in the jacket 31 as described above, and the fastener 32 is closed. In this state, after setting on the holding table 6 in the interior 2A as described above and connecting the bag pressurizing pipe 7 and the mixed material tube 34, and closing the heat insulating door 3, the microcomputer 73 starts the air pump again. 27 is operated to raise the air pressure detected by the sensor 47 in the air circuit to a set value, thereby putting the apparatus in a standby state for sale.
[0076]
Here, if there is excess mix in the mixed raw material bag 5 when the store is closed, the mix is kept in the refrigerator 2A of the refrigerator 2 and used for business on the next day. In that case, first, the raw mix tube 34, which is a flexible tube, is sandwiched by a pinch 68 and sealed. Thereby, the mix does not flow out of the mix raw material bag 5. After that, the mounting nut 66 of the mixing raw material tube 34 is removed, and the mixing raw material tube 34 is removed from the Y-type mixer 57. The bag pressurizing pipe 7 is also removed from the communication port member 24 of the jacket 31.
[0077]
Next, as shown in FIG. 12, a sterilization container 79 in which an alcohol solution or the like is stored is prepared, and the distal end of the mixed material tube 34 is detachably connected to the opening of the sterilization container 79 with the mounting nut 66. 2A in the refrigerator. As a result, the mixed raw material bags 5 can be stored in a sanitary state in the refrigerator 2A of the cool box 2.
[0078]
Even without using the sterilizing container 79, a method of sealing the mixed material tube 34 with the pinch 68, removing the mounting nut 66, disinfecting the tip of the tube 34 with alcohol, and storing the tube 34 in the storage 2A may be used.
[0079]
When the store is closed, it is necessary to clean the cooling cylinder 8 and each part of the mix supply path. In that case, the power plug is first removed to stop the operation. Next, as described above, the mixed material tube 34, which is a flexible tube, is pinched and sealed. Then, after removing the mounting nut 66 of the mix raw material tube 34 connected to the mix raw material bag 5 from the connection pipe 67 of the Y-type mixer 57, the Y-type mixer 57 is also removed from the mix inlet 9. Then, the connection pipes 67, 69, the check valves 54, 56, and the O-ring 71 are removed from the Y-type mixer 57 and disassembled, and the Y-type mixer 57, the connection pipes 67, 69, the check valves 54, 56, O The ring 71 is cleaned.
[0080]
On the other hand, when cleaning the inside of the cooling cylinder 8, the connector 43 at the tip of the cleaning hose 39 provided in the interior 2 </ b> A is connected to the mix inlet 9. Then, when the opening / closing stopper 42 is opened, cleaning water is supplied from the cleaning hose 39 into the cooling cylinder 8. The beater 10 is rotated in a state where the supplied washing water is accumulated, and the frozen dessert remaining in the cooling cylinder 8 is washed with the washing water, and the plunger 16 is opened to remove the washing water from the cooling cylinder 8 to the outside. To be discharged.
[0081]
In this case, since the connector 43 at the tip of the cleaning hose 39 always closes the opening at the tip of the hose, even if the opening / closing stopper 42 is accidentally operated without being connected to the mix inlet 9, The cleaning water does not leak into the interior 2A. When the cleaning of the inside of the cooling cylinder 8 is completed, the connector 43 is disconnected from the mix inlet 9, and the cleaned Y-type mixer 57 and the like are connected to prepare for business on the next day.
[0082]
In the above embodiment, the mixed raw material bag 5 is stored in the flexible jacket 31, and the mixed raw material bag 5 is pressed by expanding the closed space between the pressing body 23 and the jacket main body 21 with compressed air. However, the present invention is not limited to this. For example, the mixed raw material bag 5 is stored in the inside 2A of the cool box 2 and pressed by the pressing member. Further, a balloon-shaped pressing body that expands with compressed air is arranged in contact with the mixed raw material bag 5. With such a configuration, the mix can be pushed out of the mix material bag 5 by the air pump 27.
[0083]
Further, the structure of the pressing means itself is not limited to the whole being flexible like the jacket 31 shown in the embodiment, and only the pressing body 23 is flexible and the other parts are made of hard plastic or metal. May be. However, if the mixed raw material bag 5 is accommodated in the flexible jacket 31 as in the embodiment and the pressing body 23 is provided along the same, the pressure by the compressed air can be effectively released from the pressing raw material bag 23. 5, the mix in the raw material bag 5 can be pushed out smoothly without excess.
[0084]
Further, in the embodiment, the jacket 31 can be freely opened and closed by the fastener 32, but is not limited to this, and may be freely opened and closed by a button or the like. In the embodiment, as shown in FIG. 9, the center of the other surface of the jacket 31 is opened over the entire width, but the invention is not limited to this. One side, two sides, or three sides of the jacket 31 are opened and can be opened and closed with the same fastener. It may be.
[0085]
【The invention's effect】
As described in detail above, according to the frozen dessert manufacturing apparatus of the present invention, a cool box for keeping a flexible mixed raw material bag in which a mix is stored, and cooling while stirring the mix supplied from the mixed raw material bag. A cooling cylinder for producing frozen desserts, a cooling device for cooling the cool box and the cooling cylinder, an air compressing device, a mix supply passage for communicating the mixed raw material bag with the inside of the cooling cylinder, and a cooling cylinder provided in the cool box. Since it is provided with a pressing means for pressing the mixed raw material bag from the outside, the mix is kept cool in the cool box together with the mixed raw material bag, and the mixed raw material bag is pressed from the outside by the pressing means, from within the mixed raw material bag. The mix is forcibly extruded and supplied directly to the cooling cylinder through the mix supply passage, so that frozen dessert can be manufactured.
[0086]
This will eliminate the need for a gravity-dependent mix supply system and enable automatic supply of a stable mix, while also solving hygiene issues by supplying the mix directly from the mix material bag to the cooling cylinder. Will be able to In addition, since compressed air is supplied into the cooling cylinder via the air supply passage, overrun of the frozen dessert can be obtained without any trouble.
[0087]
In particular, since the pressing means is expanded by the compressed air supplied from the air compression device through the pressurized air passage and presses the mixed raw material bag, the structure of the mixed raw material bag itself does not need to be changed, Normal mix raw material bags can be used. Thereby, the usability and versatility are enhanced. In addition, since the cool box itself does not need to be airtight with respect to the compressed air, it is possible to simplify the structure of the frozen dessert production apparatus and reduce the production cost.
[0088]
Further, according to the frozen dessert manufacturing apparatus of the second aspect of the present invention, in addition to the above, the pressing means is a jacket in which the mixed raw material bag is stored so as to be freely delivered and surrounds the mixed raw material bag. Handling such as loading and replacing bags becomes easy. Further, the jacket includes a jacket main body, and a flexible pressing body provided along the mixed raw material bag so as to form a closed space between the jacket main body and the pressurized air passage. Is designed to supply compressed air between the jacket body and the pressing body, so that the mix can be smoothly pushed out of the mixed material bag. Also, in this case, since the jacket surrounds the periphery of the mixed raw material bag, even if the mix leaks from the mixed raw material bag, it becomes possible to prevent or minimize the contamination in the cool box. .
[0089]
According to the frozen dessert manufacturing apparatus of the third aspect of the present invention, the outlet of the mixed raw material bag is arranged downward in addition to the above inventions, so that the mix in the mixed raw material bag can be collected in the direction of the outlet by its own weight. , And it becomes possible to further smoothly push out the mix.
[0090]
Furthermore, according to the frozen dessert manufacturing apparatus of the fourth aspect of the present invention, in addition to the above, since the mixed raw material bag is arranged such that the outlet of the mixed raw material bag is located at the lowest position, the mix in the mixed raw material bag is under its own weight. They will be gathered at the exit and will be able to push out the mix more smoothly.
[Brief description of the drawings]
FIG. 1 is a partially longitudinal perspective view of a frozen dessert manufacturing apparatus to which the present invention is applied.
FIG. 2 is a configuration diagram relating to mix supply of the frozen dessert production apparatus of FIG. 1;
FIG. 3 is an exploded configuration diagram of parts around the mixed raw material bag of FIG. 2;
FIG. 4 is a block diagram of an electric circuit of the frozen dessert manufacturing apparatus of FIG. 1;
FIG. 5 is a timing chart for explaining operations from supply of a mix to production of a frozen dessert and extraction of a frozen dessert of the frozen dessert production apparatus of FIG. 1;
FIG. 6 is a timing chart for explaining operations from supply of a mix to production of a frozen dessert and extraction of a frozen dessert in the frozen dessert production apparatus of FIG. 1;
FIG. 7 is a side view of a mixed material bag used in the present invention.
FIG. 8 is a sectional view of the mixed raw material bag of FIG. 7;
FIG. 9 is a plan view of a jacket used in the present invention.
10 is a cross-sectional view of a state in which the mixed raw material bag of FIG. 7 is stored in the jacket of FIG.
11 is a cross-sectional view of the jacket and the mixed raw material bag in a state where the mix in the mixed raw material bag is extruded from the state of FIG.
FIG. 12 is a diagram showing a state in which the mixed raw material bags are kept cool after the store is closed.
[Explanation of symbols]
2 Cooler 3 Insulated door 4 Cooler cooler 5 Mix material bag 7 Bag pressurized pipe (pressurized air passage)
8 Cooling cylinder 9 Mix inlet 10 Beater 11 Cylinder cooler 14 Freezer door (transparent part)
21 jacket body 22 outlet member 23 pressing body 24 communication port member 27 air pump (air compression device)
31 Jacket 33 Cooler open / close switch 34 Mix material tube (mix supply passage)
37 Freezer door switch 38 Proximity switch 39 Cleaning hose 42 Opening / closing plug 43 Connector 47 Sensor in air circuit (pressure detecting means)
48 Exhaust solenoid valve in air circuit (exhaust means)
51 Air circuit (air supply passage)
52 Air circuit opening / closing solenoid valve (channel opening / closing means)
53 Air filters 54, 56 Check valve 57 Y-type mixer (merging passage member)
68 pinch 73 microcomputer (control means)
76 Pulldown switch (operation switch)
79 Sterilization container SM Frozen dessert production equipment R Cooling equipment

Claims (4)

A cool box that keeps the mix raw material bag having flexibility in which the mix is stored,
A cooling cylinder that produces a frozen dessert by cooling while stirring the mix supplied from the mix raw material bag,
A cooling device for cooling the cool box and the cooling cylinder,
An air compressor,
A mix supply passage for communicating the mixed raw material bag and the inside of the cooling cylinder,
Pressing means provided in the cool box, for pressing the mixed material bag from outside,
A pressurized air passage for supplying compressed air generated by the air compressor to the pressing means,
An air supply passage for supplying the compressed air into the cooling cylinder,
The frozen dessert manufacturing apparatus, wherein the pressing means expands by supplying compressed air from the air compression device and presses the mixed raw material bag. The pressing means is a jacket in which the mixed raw material bag is stored so as to be able to be delivered, and surrounds the periphery of the mixed raw material bag,
The jacket is formed of a jacket body and a flexible pressing body which is capable of forming a closed space between the jacket body and is provided along the mixed material bag.
The apparatus according to claim 1, wherein the pressurized air passage supplies compressed air between the jacket body and the pressing body. 3. The frozen dessert production apparatus according to claim 1, wherein an outlet of the mixed raw material bag is arranged downward. 4. The frozen dessert manufacturing apparatus according to claim 3, wherein the mixed raw material bag is arranged such that an outlet of the mixed raw material bag is located at a lowermost position.

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