JP2006271221A - Device for making frozen confectionery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for making frozen confectionery remarkably improved in workability when cleaning the inside of a cooling cylinder. <P>SOLUTION: The device for making frozen confectionery cools mix in a cooling cylinder 8 while beating the mix with a beater 10, and is provided with a plunger 16 for taking out the frozen confectionery from the inside of the cooling cylinder 8, a plunger motor 15 for driving the plunger, a water supply solenoid valve 42 for pouring water into the cooling cylinder 8, and a microcomputer having a cleaning process. In the cleaning process, water is supplied into the cooling cylinder 8 via the water supply solenoid valve 42 while closing the plunger 16 via the plunger motor 15 to rotate the beater 10, and opening the plunger 16 via the plunger motor 15 for drainage after passing prescribed period of time to carry out cleaning operation. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a frozen dessert manufacturing apparatus for manufacturing a frozen dessert such as soft cream (soft ice cream).

  Conventionally, this kind of frozen dessert manufacturing apparatus is equipped with a cooling device comprising a compressor, a condenser, a capillary tube, a cooling cylinder and a cooler equipped in a hopper (mix tank), and this cooling device supplies liquefied refrigerant to the cooler during the manufacture of frozen dessert. The cooling cylinder and hopper are cooled by flowing after reducing the pressure. A beater is attached in the cooling cylinder, and the mix in the cooling cylinder is stirred by the beater while being cooled by a cooler to produce a frozen dessert such as soft cream or sherbet.

In addition, when the store is closed, a high-temperature refrigerant is allowed to flow from the compressor to the cooler, the frozen dessert remaining in the cooling cylinder is heated, and the mix is heat sterilized by maintaining it at a predetermined high temperature for a predetermined time (for example, Patent Document 1).
Japanese Patent Laid-Open No. 10-271957

  By the way, when cleaning the inside of the cooling cylinder of such a frozen confectionery manufacturing apparatus, after thawing and discharging the frozen confectionery in the cooling cylinder in advance, conventionally, washing water is injected into the cooling cylinder and the beater is rotated. The washing water in the cooling cylinder was stirred, and then the washing water was discharged by operating the lever of the plunger for taking out the frozen dessert. In order to perform such injection of cleaning water, rotation of a beater, and discharge of cleaning water, conventionally, a user has to perform switch operation and lever operation one by one, which is extremely troublesome.

  The present invention has been made to solve the conventional technical problem, and an object of the present invention is to provide a frozen confectionery manufacturing apparatus in which the workability when cleaning the inside of the cooling cylinder is remarkably improved.

  The frozen confectionery manufacturing apparatus of the present invention is to produce frozen confectionery by cooling while mixing the mix with a beater in a cooling cylinder equipped with a cooler, and a plunger for taking out the frozen confectionery from the cooling cylinder, A drive means for driving the plunger, a water supply means for injecting water into the cooling cylinder, and a control means are provided. The control means has a washing step, and in this washing step, the plunger is closed by the driving means. Then, water is poured into the cooling cylinder by the water supply means, the beater is rotated, and a cleaning operation is performed in which the plunger is opened and drained by the drive means after a predetermined time has elapsed.

  Moreover, the frozen dessert manufacturing apparatus of the invention of claim 2 is characterized in that, in the above, the control means executes the washing operation a plurality of times in the washing step.

  Moreover, the frozen dessert manufacturing apparatus of the invention of claim 3 is characterized in that, in each of the above inventions, the control means causes the high-temperature refrigerant to flow through the cooler in the cleaning operation.

  According to a fourth aspect of the present invention, there is provided a frozen dessert manufacturing apparatus, wherein the control means includes an automatic washing switch and a display means, and a cooling cylinder is supplied by flowing a high-temperature refrigerant to the cooler based on the operation of the automatic washing switch. Execute the thawing process to thaw the frozen dessert inside, and after the thawing process is completed, after the mix is discharged, the water is poured into the cooling cylinder by the water supply means with the plunger closed by the drive means based on the operation of the automatic washing switch And rotating the beater and opening a plunger by a driving means after a predetermined time, and performing a pre-cleaning step of discharging residual mix and water, and based on the operation of the automatic cleaning switch after the pre-cleaning step, the cleaning step It is characterized by performing.

  Further, in the frozen dessert manufacturing apparatus of the invention of claim 5, in the above, the control means is provided with a display means, and by this display means, the implementation status of the thawing process, the pre-cleaning process and the cleaning process is displayed, or the implementation status is indicated. In addition, the operation to be performed next is displayed.

  In the present invention, in a frozen dessert manufacturing apparatus for manufacturing frozen dessert by cooling the mix while stirring with a beater in a cooling cylinder equipped with a cooler, a plunger for taking out the frozen dessert from the cooling cylinder and driving this plunger Drive means, water supply means for injecting water into the cooling cylinder, and control means, this control means has a washing step, and in this washing step, the water supply means with the plunger closed by the drive means Injects water into the cooling cylinder and rotates the beater, and after a predetermined time has passed, a driving operation is performed to open the plunger and drain the water. Is automated. Thereby, the cleaning operation in the cooling cylinder is remarkably facilitated.

  In the second aspect of the present invention, the control means executes the cleaning operation a plurality of times in the cleaning step, so that the dirt in the cooling cylinder can be effectively removed.

  In the invention of claim 3, in each of the above inventions, the control means causes the high-temperature refrigerant to flow in the cooler during the cleaning operation, so that the fat adhering to the inner surface of the cooling cylinder or the beater surface is lifted, and more effectively. The inside of the cooling cylinder can be cleaned.

  Further, in the invention of claim 4, in each of the above inventions, the control means includes an automatic washing switch and a display means. Based on the operation of the automatic washing switch, the high temperature refrigerant is allowed to flow through the cooler and the frozen dessert in the cooling cylinder is removed. After performing the thawing step, the mix is discharged after the thawing step is completed, and the water is poured into the cooling cylinder by the water supply means with the plunger closed by the driving means, and the beater is turned on. Since the pre-cleaning step of rotating the plunger and opening the plunger by the driving means after a predetermined time and discharging the residual mix and water is executed, the cleaning step is executed based on the operation of the automatic cleaning switch after the pre-cleaning step. The control means can be instructed to execute each of the thawing process, the pre-cleaning process, and the cleaning process only by operating a single automatic cleaning switch. Ri, in which the operability is improved.

  In the invention of claim 5, the control means includes display means in the above, the display means displays the execution status of the thawing process, the pre-cleaning process and the cleaning process, or in addition to the implementation status, Since the operation to be performed is displayed, the user can operate the automatic cleaning switch by looking at the display on the display means to execute each step, and the operability is further improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 is a partially longitudinal perspective view of a frozen dessert manufacturing apparatus SM according to an embodiment to which the present invention is applied, FIG. 2 is a configuration diagram relating to the mix supply of the frozen dessert manufacturing apparatus SM, FIG. 3 is a perspective view of a Y-type mixer 57, and FIG. Is a cross-sectional view of the Y-type mixer 57, FIG. 5 is a block diagram of an electric circuit of the frozen confectionery manufacturing apparatus SM, and FIGS. 6 to 8 are portions of the cold storage box 2 and the cooling cylinder 8 of the frozen confectionery manufacturing apparatus SM for explaining the cleaning process. The vertical side view of each is shown.

  The frozen dessert manufacturing apparatus SM according to the embodiment is an apparatus for manufacturing and selling frozen confectionery such as soft cream and sherbet (shake) (in the embodiment, soft cream is manufactured). Is a heat insulating cold storage as a storage for storing and cooling a mixed material bag 5 (not shown in FIG. 1) containing a soft cream raw material mix (mixed as a frozen confectionery raw material such as soft cream or sherbet) 2 is provided. The front side of the interior 2A of the cool box 2 is open, and the front opening is closed by a rotatable heat insulating door 3 so that the heat insulating door 3 can be opened and closed when the mixed material bag 5 is replaced. Opened. Reference numeral 33 denotes a cool box opening / closing switch for detecting opening / closing of the heat insulating door 3.

  On the other hand, a cold storage cooler and a blower (not shown) are arranged on the ceiling 2A of the cold storage 2 and a cold storage compressor 18A and a cold storage condenser (not shown) are installed on the back of the cold storage 2. The cold storage cooler and a known refrigerant circuit are configured. When the cool box compressor 18A is operated, the cool box cooler exhibits a cooling action. Then, the cold air cooled by the cool box cooler is circulated to the interior 2A by the blower, and the mix raw material bag 5 and the peripheral components described later in the cool box 2 are kept at a predetermined temperature.

  The mix raw material bag 5 is stored and held in a bag case 31 so as to be freely delivered, and in that state, the mixed material bag 5 is stored and loaded in the inside 2 </ b> A of the cool box 2. In this embodiment, the frozen confectionery manufacturing apparatus SM includes two cooling cylinders 8 as described later, and can produce frozen confectionery using two kinds of mixed raw materials. For this reason, in this embodiment, two bag cases 31 and 31 each containing the mixed raw material bags 5 are juxtaposed in the inside 2A of the cool box 2. This bag case 31 is comprised from two parts comprised by the net form with the wire.

  On the other hand, while holding the rear part of the bag case 31 on the rear inner wall of the cool box 2 and forming a support portion (not shown) for making it lower and slanting to the front side, the front inner wall of the cool box 2 is A locking member 79 for holding the front portion of the bag case 31 is provided across the left and right. Further, as shown in FIG. 1, a connecting portion 7A of a bag pressurizing pipe 7 constituting a bag pressurizing passage and a connecting portion 51A of an air circuit 51 as an air supply passage are provided from the inner wall of the cool box 2. Further, as will be described later, a mix inlet 9 of the cooling cylinder 8 projects from the bottom wall 2B of the inside 2A of the cool box 2 and opens upward in the inside 2A. In this embodiment, since the frozen dessert can be manufactured by using two kinds of mixed raw materials as described above, the connecting portion 7A of the bag pressurizing pipe 7, the connecting portion 51A of the air circuit 51 and the cooling cylinder 8, the mix Two inlets 9 are provided.

  Here, the mix raw material bag 5 of the embodiment is attached to one surface of the bag body 21 having flexibility and heat-welded, for example, and communicates between the inside of the bag body 21 and the outside. An outlet member 22 made of hard resin, a base end is attached to the outlet member 22, and a periphery is welded to the other side of the bag body 21 and a mix raw material tube 34 constituting a mix supply passage communicating with the bag body 21. A flexible outer layer body 23 made of the same material as the bag body 21 and a hard resin attached to one surface of the bag body 21 so as to communicate with the non-adhesive portion between the outer layer body 23 and the bag body 21. The communication port member 24 (FIG. 2).

  The outer layer body 23 and the bag main body 21 are in a non-adhesive state except for the periphery of the outer layer body 23. Thus, a sealed space (indicated by air in FIG. 2) is formed between the outer layer body 23 and the bag main body 21. Configurable. The communication port member 24 communicates between the outer layer body 23 and the bag body 21 (sealed space) and the outside. In addition, the mix (shown as a mix in FIG. 2) is stored in the bag body 21, and compressed air can be supplied to the sealed space between the outer layer body 23 and the bag body 21.

  The mix raw material bag 5 storing the mix as described above is held in a state of being stored in the bag case 31 and stored in the inside 2 </ b> A of the cool box 2. In this state, the bag case 31 and the mix raw material bag 5 are locked with a sufficient space below the front portion with the front portion inclined slightly lower. In this state, the mix raw material tube 34 previously attached to the outlet member 22 as described above is connected to a Y-type mixer 57 as a connection member as described later, and a bag is connected between the communication port member 24 and the connection portion 7A. The pressure pipe 7 is connected for communication. In addition, the air circuit 51 connects the connection portion 51 </ b> A and the Y-type mixer 57.

  The mix material tube 34 is composed of a flexible synthetic resin tube having flexibility and flexibility, and the base end thereof is connected in advance to the outlet member 22 of the mix material bag 5 as described above. And the tip of the mix raw material tube 34 is heat-sealed and sealed, and the passage in the mix raw material tube 34 is kept hygienic so that it does not come into contact with the outside, and is cut when connecting to the Y-type mixer 57. Will be opened.

  On the other hand, 8 in FIG. 1 is the above-described cooling cylinder in which the mix flowing in from the mix inlet 9 is stirred by a rotating beater 10 (stirring means) to produce a frozen dessert, and a cylinder cooler 11 is attached around it. It has been. The beater 10 is rotated via a beater motor 12, a drive transmission belt, a speed reducer 13, and a rotating shaft. In the manufactured frozen dessert, the plunger 16 (extraction means) attached to the freezer door 14 that closes the front opening of the cooling cylinder 8 so that it can be opened and closed is lifted, the extraction path (not shown) is opened, and the beater 10 is driven to rotate. Is taken out.

  The plunger 16 is lowered and the extraction path is closed. The plunger 16 is driven up and down by a plunger motor 15 (driving means). That is, a screw portion (not shown) is provided on the rotating shaft of the plunger motor 15, and this screw portion enters the plunger 16 and is engaged therewith. Then, when the plunger motor 15 rotates forward / reversely, the degree of engagement of the screw portion changes, whereby the plunger 16 moves up and down. The freezer door 14, the plunger motor 15, and the plunger 16 constitute a frozen dessert extraction unit.

  The freezer door 14 is made of transparent glass or transparent hard resin to constitute a see-through portion. Through this freezer door 14, the inside of the cooling cylinder 8 can be seen through from the front. A permanent magnet 36 is embedded in the surface of the freezer door 14 on the main body 1 side, and a reed switch 37 is attached to the 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 the front opening of the cooling cylinder 8 is closed, 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.

  A proximity switch (proximity sensor) 38 is attached to the front surface of the main body 1 at a position corresponding to the lower side of each plunger 16 constituting the frozen dessert extraction unit. The proximity switch 38 detects whether or not a cup or cone (container) for placing frozen dessert is disposed below the plunger 16 using infrared rays or sound waves.

  Further, as shown in FIGS. 1 and 6 to 8, a cleaning hose connection port 39 is provided on the back wall of the cool box 2. The cleaning hose connection port 39 is connected to a cleaning hose H for injecting water for rinsing and rinsing into the cooling cylinder 8 when the cooling cylinder 8 is cleaned. The cleaning water pipe 41 is in communication. The cleaning water pipe 41 is connected to a water pipe (not shown), and a water supply electromagnetic valve 42 is provided in the middle of the cleaning water pipe 41. The cleaning hose H, the connection port 39, the cleaning water pipe 41, and the water supply electromagnetic valve 42 constitute a water supply means.

  A compressor 18, a condenser 20, a four-way valve 19, and the like constituting the cooling device R are housed and installed in the lower part of the main body 1. The four-way valve 19 is used for flowing a high-temperature refrigerant to the cylinder cooler 11 during later-described heat sterilization and thawing, and later-described washing in the present invention. The compressor 18, the four-way valve 19, and the cylinder cooler 11 etc. constitute a heating means.

  Next, in FIG. 2, reference numeral 27 denotes an air pump as an air compression device, and a check valve 46 having a reverse direction on the air pump 27 side is connected to a discharge pipe 28 of the air pump 27. An air circuit sensor (pressure sensor) 47, a relief valve 53, and an exhaust pipe 49 constituting pressure detection means are connected downstream of the check valve 46 of the discharge pipe 28, and the exhaust pipe 49 is connected to the exhaust pipe 49. Is connected to an exhaust solenoid valve 48 in the air circuit (for protection of the air pump and exhaust of the air circuit) constituting the exhaust means.

  The discharge pipe 28 is further connected to an inlet of an air circuit opening / closing electromagnetic valve 52 as a valve device composed of a three-way valve, and a check valve 56 is connected to one outlet of the air circuit opening / closing electromagnetic valve 52. The check valve 56 is positioned on the connecting portion 51A while the air circuit opening / closing electromagnetic valve 52 side is in the reverse direction. One end of an air circuit 51 as an air supply passage is connected to the check valve 56. The other end of the bag pressurizing pipe 7 is connected to the other outlet of the air circuit opening / closing electromagnetic valve 52. The air circuit opening / closing solenoid valve 52 communicates the inlet (air pump 27 side) and one outlet (air circuit 51 side) in a non-energized state, and is energized to enter the other outlet (bag pressurization pipe 7 side). ) To communicate.

  The other end of the air circuit 51 is detachably connected to a second inlet 57B formed at the upper end of the Y-type mixer 57. Further, the outlet 57 </ b> C at the lower end of the Y-type mixer 57 is detachably inserted and connected to the mix inlet 9 of the cooling cylinder 8 and communicates with the cooling cylinder 8. A check valve 54 is attached to the outlet 57C of the Y-type mixer 57. This check valve 54 is composed of a duckbill made of an elastic thin piece that squeezes downward, opens the flow path with pressure from the upstream side (air circuit 51 side), and from the downstream side (cooling cylinder 8 side). The flow path is closed with the pressure of.

  Further, the mix raw material bag 5, the mix raw material tube 34, the air circuit 51, the bag pressurizing pipe 7 and the Y-type mixer 57 are located in the inside 2 </ b> A of the cool box 2 and are kept cold.

  Here, the front end of the mix raw material tube 34 is cut as described above, and then the cut end is inserted into the first inlet 57A of the Y-type mixer 57 and sealed with a rubber packing 67. (Not shown) detachably connected. The first inlet 57A is formed so as to branch obliquely upward from the side surface (upstream side of the check valve 54) of the vertical pipe portion of the Y-type mixer 57 connecting the second inlet 57B and the outlet 57C. Has been. The packing 67 is integrally formed with a check valve 61 located in the first inlet 57 </ b> A, and the front end cut of the mixed material tube 34 is opened on the upstream side of the check valve 61. This check valve 54 is also composed of a duckbill made of an elastic thin piece that squeezes diagonally downward. The flow path is opened by pressure from the upstream side (mix raw material tube 34 side), and the downstream side (Y-type mixer). The flow path is closed by pressure from the straight pipe portion 57).

  Next, in FIG. 5, reference numeral 73 denotes a general-purpose microcomputer constituting control means. The microcomputer 73 receives inputs of the cool box opening / closing switch 33, the air circuit sensor 47, and the proximity switch 38 (two in the embodiment). Yes), the reed switch 37 is connected. Further, a temperature sensor 81 as temperature detecting means for detecting the temperature of the cooling cylinder 8 is connected to the input of the microcomputer 73, and a heat sterilization switch 76 and a cooling switch provided on the control panel 74 of the main body 1 are further connected. 77, a pre-cleaning switch 82, a water supply switch 85, a thawing switch 86, a plunger switch 92, an automatic cleaning switch 87, and a setting switch 88 (all operating switches) such as a dip switch are connected (one in FIG. 1). Only the part is shown).

  In addition to the compressor 18 (18A), beater motor 12, four-way valve 19 and the like (frozen confectionery production unit) of the cooling device R described above, the microcomputer 73 outputs the exhaust electromagnetic valve 48 in the air circuit, the air pump 27, and the air. A circuit opening / closing electromagnetic valve 52 is connected. Furthermore, a sold-out display lamp 78 provided on the operation panel 74 and a chime 83 as a notification means are connected to the output of the microcomputer 73. Further, the output of the microcomputer 73 is connected to the plunger motor 15 and the water supply electromagnetic valve 42 in addition to the liquid crystal display 91 constituting the display means provided on the top of the freezer door 14 on the front surface of the main body 1. Yes.

  The microcomputer 73 is also connected with a temperature sensor for detecting the temperature of the inside 2 A of the cool box 2 and a precharge switch for precharging (not shown).

  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 the power source and turned on, the microcomputer 73 first determines whether or not the contact of the reed switch 37 is closed. Then, 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 start of the subsequent operation is allowed, but the freezer door 14 is normally operated. If it is not attached and the contact point of the reed switch 37 is open, the start of the subsequent operation is prohibited, for example, the sold-out display lamp 78 is blinked, or an alarm is displayed on the display 91 with characters or figures. As a result, forgetting to attach the freezer door 14 or preventing the operation from being started in a state where the freezer door 14 is not properly installed is prevented, and the user is prompted to install the freezer door 14.

  Next, the manufacture of frozen confectionery and the extraction operation of frozen confection from the supply of the mix will be described. In addition, the mix raw material bag 5 is set in the storage 2A of the cool box 2 in a state where it can be delivered in a state of being stored in the bag case 31 as described above. In this state, the bag pressurizing pipe 7, the mix raw material tube 34, the air circuit 51, and the Y-type mixer 57 are also connected as described above. However, at this point in time when precharging is started, the Y-type mixer 57 is not completely set at the mix inlet 9 but is attached so that the air in the cooling cylinder 8 can escape.

(1) Precharge of mix When the user turns on the precharge switch, the microcomputer 73 enters a precharge mode and starts precharge. In this precharge mode, the microcomputer 73 operates the air pump 27 and energizes the air circuit opening / closing electromagnetic valve 52 to switch the flow path to the other outlet (the bag pressurizing pipe 7 side). Thereby, compressed air is supplied to the bag pressurizing pipe 7 (including the sealed space between the bag main body 21 and the outer layer body 23 of the mixed material bag 5 communicating with the bag pressurizing pipe 7).

  When the air pressure detected by the air circuit sensor 47 rises to a first upper limit value (for example, 15.0 KPa), the microcomputer 73 stops the air pump 27 based on the output of the air circuit sensor 47. . Compressed air is sent from the bag pressurizing pipe 7 into the sealed space between the outer layer body 23 of the mixed material bag 5 and the bag body 21, whereby a constant pressure is applied to the bag body 21 from the outside. As a result, the volume of the sealed space between the outer layer body 23 and the bag body 21 is expanded, so that the mix in the bag body 21 is pushed out from the outlet member 22 to the mix material tube 34. When the bag body 21 is pressurized and the mix is pushed out to the mix material tube 34, the check valve 61 is opened by the pressure. As a result, the mix extruded from the bag body 21 to the mix material tube 34 passes through it, then exits from the front end cut, enters the Y-type mixer 57 through the first inlet 57A, and passes through the check valve 61. To the straight pipe section.

  Thereafter, it flows down in the Y-type mixer 57 and reaches the check valve 54. Since the check valve 54 is opened by the pressure of the mix pushed out from the mix raw material tube 34, the mix passes through the check valve 54 and flows into the cooling cylinder 8 from the mix inlet 9. At this time, since the Y-type mixer 57 is mounted so that air can escape, the air in the cooling cylinder 8 exits from the mix inlet 9. As a result, the mix also smoothly flows into the cooling cylinder 8.

  Since the mix flows out from the mix raw material bag 5, the volume of the sealed space between the outer layer body 23 and the bag body 21 is increased, so that the air pressure in the pipe from the bag pressurizing pipe 7 to the discharge pipe 28 is also reduced. When the air circuit sensor 47 detects that the pressure has decreased to a first lower limit (for example, 10.0 KPa), the microcomputer 73 operates the air pump 27 to resume the supply of compressed air. By repeating this, the microcomputer 73 sets the air pressure (the pressure of the compressed air in the sealed space between the outer layer body 23 of the mixed material bag 5 and the bag body 21) detected by the air circuit sensor 47 to the first upper limit (15. 0 KPa) and the first set value (average 12.5 KPa) between the first lower limit (10.0 KPa).

  Thereafter, this is continued for a predetermined period (for example, 3 minutes), and the mix is fed into the cooling cylinder 8. As a result, the mix is stored in the cooling cylinder 8. For example, when 3 minutes have passed, the microcomputer 73 stops the operation of the air pump 27, opens the exhaust electromagnetic valve 48 in the air circuit for 5 seconds, and discharges the compressed air once. The check valve 61 in the Y-type mixer 57 is also temporarily closed by the pressurization of the bag body 21 being lost. The user checks the liquid level of the mix in the cooling cylinder 8 through the transparent freezer door 14, and if the liquid level does not reach the predetermined liquid level, the user continues to press the precharge switch.

  When the precharge switch is continuously turned on, the microcomputer 73 operates the air pump 27 to start supplying compressed air again. As described above, the air pressure detected by the sensor 47 in the air circuit (mixed material bag 5 The air pressure in the sealed space between the outer layer body 23 and the bag body 21 is maintained at the first set value. As a result, the bag body 21 is pressurized, the check valve 61 on the downstream side of the mix material tube 34 is opened, and the mix is again fed from the mix 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 a predetermined liquid level and releases the precharge switch (OFF), the microcomputer 73 stops the air pump pump 27, The exhaust electromagnetic valve 48 in the air circuit is opened to discharge the compressed air in the sealed space between the outer layer body 23 of the mixed material bag 5 and the bag body 21. As a result, the feeding of the mix is stopped, the mix is stored in the cooling cylinder 8 to a predetermined liquid level, and the check valve 61 in the Y-type mixer 57 is also closed.

  After the mix is stored in the cooling cylinder 8 to a predetermined liquid level in this way, the heat insulating door 3 is opened, and the Y-type mixer 57 is connected to the mix inlet 9 in the inside 2A of the cool box 2 (from the cooling cylinder 8 to the air ), And close the heat insulating door 3. When the heat insulating door 3 is opened, the microcomputer 73 stops the air pump 27 and opens the exhaust electromagnetic valve 48 in the air circuit to discharge the compressed air as described above. After the Y-type mixer 57 is connected, the microcomputer 73 When the door 3 is closed, the air circuit opening / closing electromagnetic valve 52 is energized to switch the flow path to one outlet side (air circuit 51 side), the air pump 27 is operated again, and the air circuit sensor 47 detects it. After raising the air pressure (including the air pressure in the air circuit 51) to the second upper limit (for example, 17.0 KPa), the air pump 27 is stopped.

  When the air circuit opening / closing solenoid valve 52 switches the flow path to one outlet side, the microcomputer 73 detects that the air pressure (including the air pressure in the air circuit 51) detected by the air circuit sensor 47 is the second. When the air pressure drops to a lower limit value (for example, 12.0 KPa), the air pump 27 is operated again to reduce the air pressure detected by the air circuit sensor 47 (the pressure of the compressed air in the air circuit 51) to the second value. The second set value (average 14.5 KPa) between the upper limit (17.0 KPa) and the second lower limit (12.0 KPa) is maintained.

  When the air circuit opening / closing electromagnetic valve 52 is energized and the flow path is switched to one outlet, the compressed air flows from the air circuit 51 through the Y-type mixer 57 into the cooling cylinder 8. As a result, a predetermined overrun is obtained for the frozen dessert manufactured in the cooling cylinder 8. Also, the mix remaining on the upstream side of the check valve 54 is pushed out to the cooling cylinder 8 by the pressure of the compressed air flowing from the air circuit 51 and the check valve 61 is also closed. Inflow of the mix into will be blocked.

  In particular, since the pressure of the compressed air supplied from the air circuit 51 (second set value) is higher than the pressure of the compressed air supplied to the mix material bag 5 (first set value), the check valve 61 is sure. Since the compressed air remains between the mixed material tube 34 and the check valve 61, leakage from the cut end of the mixed material tube 34 is also prevented.

  In addition, as described above, the amount of compressed air flowing from the air circuit 51 into the cooling cylinder 8 can provide an overrun of frozen dessert (a state where air is mixed in the frozen dessert and increases its bulk). The liquid level of the mix stored in the cooling cylinder 8 can be regulated to a predetermined liquid level by operating the precharge switch. And since the leakage of the mix from the mix raw material tube 34 is also prevented, the amount of air in the cooling cylinder 8 can also be defined, whereby the overrun amount of the frozen dessert can be set accurately.

  Moreover, since the mix raw material tube 34 and the air circuit 51 are once merged by the Y-type mixer 57 as described above, they are communicated from the mix inlet 9 into the cooling cylinder 8. And the air supply for overrun can be performed from the single mix inlet 9, and the structure of the cooling cylinder 8 can be simplified. This completes the precharge of the mix.

(2) Normal Sales Next, when the cooling switch 77 is turned ON (pressed) by the user, the microcomputer 73 is cooled on the condition that the freezer door 14 is normally attached and closed as described above. The compressor 18 is operated to start the cooling operation. When the compressor 18 is operated, the refrigerant condensed in the condenser 20 is supplied to the cylinder cooler 11 through a decompression device (not shown) and exhibits a cooling action there. Further, the compressor 18 is also operated, and the mix of the mix material bag 5 in the inside 2A of the cool box 2 is kept cold by the cool box cooler 4 as described above. Further, since the components such as the mix raw material tube 34 and the other end of the air circuit 51 in the interior 2A and the Y-type mixer 57 are kept cold, the mix and compressed air flowing into the cooling cylinder 8 as will be described later. The temperature does not increase in the process of passing through these.

  On the other hand, in the cooling cylinder 8, the mix is cooled to a freezing temperature (about −4 ° C.) by the cylinder cooler 11, and the microcomputer 73 rotates the beater 10 by the beater motor 12. A semi-cured frozen dessert (soft cream) is produced. After that, it becomes a sales standby state.

  In this state, for example, when the user places the cone below the plunger 16, the proximity switch 38 detects the presence of the cone (and the user's hand) and turns on (sales detection). The microcomputer 73 rotates the beater 10 when the proximity switch 38 is continuously ON for 3 seconds. Further, the microcomputer 73 rotates the plunger motor 15 forward to raise the plunger 16. As a result, rotation of the beater 10 pushes frozen dessert (soft cream) into an extraction path (not shown) and extracts it into a cone.

  Further, while the proximity switch 38 is ON as described above, the microcomputer 73 energizes the air circuit opening / closing electromagnetic valve 52 to switch the flow path to the other outlet, and supplies the compressed air to the bag pressurizing pipe 7. Accordingly, the mix is supplied from the mix raw material tube 34 through the Y-type mixer 57 (opening the check valve 61) to the cooling cylinder 8 and replenished in the same manner as in the precharge described above.

  When the cone is moved away from the plunger 16 even a little, the proximity switch 38 does not detect it (OFF), so the microcomputer 73 reverses the plunger motor 15 and lowers the plunger 16 to block the extraction path. In addition, the microcomputer 73 stops the beater 10, deenergizes the air circuit opening / closing electromagnetic valve 52, switches the flow path to one outlet, and again supplies compressed air to the air circuit 51. As a result, the extraction of the frozen dessert is stopped and the check valve 61 is also closed. As a result, the backflow of the compressed air to the mix material tube 34 and the backflow of the mix to the air circuit 51 are prevented, and there is no need to clean the inside of the air circuit 51.

  Thus, by enclosing compressed air in the sealed space between the outer layer body 23 of the mixed raw material bag 5 and the bag body 21 using the air pump 27, the volume of the sealed space between them is expanded and the bag body 21. Since the mix stored inside is pushed out to the mix raw material tube 34, automatic supply of the mix from the bag body 21 to the cooling cylinder 8 can be realized. This eliminates the gravity-dependent mix supply system that uses the mix supply pipe as in the prior art, and enables stable automatic supply of the mix. The mix is directly cooled from the mix material bag 5 to the cooling cylinder 8. By supplying to, hygiene problems can be solved.

  Furthermore, compressed air is supplied to the bag pressurizing pipe 7 when the mix needs to be supplied to the cooling cylinder 8 at the time of precharging the mix and extracting the frozen dessert, and the compressed air is always supplied to the air circuit 51. Since the supply is performed, it is possible to close the check valve 61 and prevent the unnecessary mix from flowing into the cooling cylinder 8 while reliably supplying the mix when necessary.

  Furthermore, since the plunger 16 is driven up and down by the plunger motor 15, it is not necessary to operate the lever to move the plunger up and down as in the prior art, and the extraction of the frozen dessert from the cooling cylinder 8 can be automated.

(3) Heat sterilization Next, heat sterilization of the mix in the cooling cylinder 8 is demonstrated. When closing the store with the frozen dessert remaining in the cooling cylinder 8, the user operates the heat sterilization switch 76. When the heat sterilization switch 76 is operated, the microcomputer 73 lowers the plunger 16 by the plunger motor 15 and keeps the extraction path closed, operates the compressor 18 of the cooling device R, and the four-way valve. 19 is switched to start the heat sterilization operation. In this heat sterilization operation, the high-temperature gas refrigerant discharged from the compressor 18 is directly supplied to the cylinder cooler 11 without passing through the condenser 20 or the pressure reducing device. As a result, the cooling cylinder 8 is heated, so that the internal frozen dessert is thawed and returned to the mix.

  Thereafter, the microcomputer 73 controls the operation of the compressor 18 based on the temperature of the cooling cylinder 8 detected by the temperature sensor 81 and maintains the temperature of the cooling cylinder 8 in a sterilized state. Thereby, the mix in the cooling cylinder 8 is sterilized. When such a heat sterilization operation is completed, the microcomputer 73 switches the four-way valve 19 again, condenses the refrigerant discharged from the compressor 18 with the condenser 20 and decompresses the refrigerant with the decompressor, and then the cylinder cooler 11 By supplying and cooling, the mix in the cooling cylinder 8 is kept cold until the next day.

(4-1) Cleaning in Cooling Cylinder Next, an operation for cleaning the cooling cylinder 8 will be described with reference to FIGS. 6 to 8. When the cooling cylinder 8 is cleaned after the store is closed, the mixed material tube 34, the bag pressurizing pipe 7, and the air circuit 51 are first removed from the Y-type mixer 57, and the mixed material bag 5 is taken out from the inside 2A. Next, the thawing switch 86 is operated. When the thawing switch 86 is operated, the microcomputer 73 performs the thawing process in a state where the plunger 16 is lowered by the plunger motor 15 and the extraction path is closed.

(4-1-1) Thawing Step In this thawing step, the microcomputer 73 operates the compressor 18 of the cooling device R and switches the four-way valve 19 to discharge the high temperature discharged from the compressor 18 in the same manner as the above-described heat sterilization operation. The gas refrigerant is supplied directly to the cylinder cooler 11 without passing through the condenser 20 or the pressure reducing device. As a result, the cooling cylinder 8 is heated, so that the internal frozen dessert is thawed and returned to the mix. When the temperature of the cooling cylinder 8 detected by the temperature sensor 81 rises to a predetermined temperature such as + 20 ° C., the microcomputer 73 stops the compressor 18 and ends the thawing process.

  The microcomputer 73 sounds the chime 83 to notify the user of the end of the thawing process, and on the display 91, the end of the thawing process is set, and then a bucket is set, the mix is discharged, and the Y-type mixer is discharged. 57 is removed from the mix inlet 9, and a suggestion that the washing hose H is inserted into the mix inlet 9 and the water supply switch 85 is operated is displayed in characters or figures.

(4-1-2) Pre-cleaning step The user sets a predetermined bucket below the plunger 16 while viewing the display on the display 91 and operates the plunger switch 92. When the plunger switch 92 is operated, the microcomputer 73 causes the plunger motor 15 to rotate forward to raise the plunger 16 and open the extraction path. As a result, the thawed mix is discharged from the cooling cylinder 8 and stored in the bucket. Thereafter, the plunger switch 92 is operated again. The microcomputer 73 reverses the plunger motor 15 based on this second operation, lowers the plunger 16 and closes the extraction path.

  Next, the user removes the Y-type mixer 57 from the mix inlet 9, and then inserts the washing hose H into the mix inlet 9. When the user operates the water supply switch 85, the microcomputer 73 opens the water supply electromagnetic valve 42 and injects water into the cooling cylinder 8. This amount of water injection is executed for a predetermined time until the inside of the cooling cylinder 8 becomes full, and then the microcomputer 73 closes the water supply electromagnetic valve 42. When the water injection is completed, the microcomputer 73 sounds the chime 83 as described above, and displays on the display 91 the indication that the water injection is completed and then the operation of the pre-cleaning switch 82 in characters or figures.

  Next, when the user operates the pre-cleaning switch 82, the microcomputer 73 executes a pre-cleaning process. The beater 10 is rotated by the beater motor 12, the water supplied in the cooling cylinder 8 is stirred, and the remaining mix adhering to the inner surface of the cooling cylinder 8 and the surface of the beater 10 is dissolved in water. When a predetermined time elapses after the pre-cleaning switch 82 is operated, the microcomputer 73 indicates that the chime 83 and the display 91 are operated, and then the plunger switch 92 is operated to drain the water.

  When the user operates the plunger switch 92, the microcomputer 73 rotates the plunger motor 15 in the forward direction to raise the plunger 16, and opens the extraction path. As a result, the washing water in which the remaining mix is dissolved is discharged from the cooling cylinder 8 and accommodated in the bucket. Thereafter, the plunger switch 92 is operated again. The microcomputer 73 reverses the plunger motor 15 based on this second operation, lowers the plunger 16, closes the extraction path, and ends the pre-cleaning step.

(4-1-3) Cleaning Step When the pre-cleaning step is completed, the microcomputer 73 indicates the end of the pre-cleaning step with the chime 83 and the display 91, and then the drain 91 is attached to the freezer door 14 with the display 91. Then, a detergent is put into the cooling cylinder 8 from the mix inlet 9, and an indication indicating that the automatic cleaning switch 87 is operated is displayed. As shown in FIG. 8, the drainage device 93 includes a receiving portion that covers the lower side of the plunger 16 and a hose that extends downward therefrom and is connected to sewage.

  The user sets the drainage device 93, removes the washing hose H from the mix inlet 9 once, puts the detergent into the cooling cylinder 8 from the mix inlet 9, and inserts the washing hose H into the mix inlet 9 again. When the automatic cleaning switch 87 is operated, the microcomputer 73 executes a cleaning operation. As described above, the plunger 16 closes the extraction path at this time.

  In this cleaning operation, the microcomputer 73 opens the water supply electromagnetic valve 42 and injects water into the cooling cylinder 8. This amount of water injection is executed for a predetermined time until the inside of the cooling cylinder 8 becomes full, and then the microcomputer 73 closes the water supply electromagnetic valve 42. When this water injection is completed, the microcomputer 73 rotates the beater 10 with the beater motor 12 to stir the water supplied in the cooling cylinder 8 to remove dirt such as fat adhering to the inner surface of the cooling cylinder 8 or the surface of the beater 10. Melt in.

  At this time, the microcomputer 73 operates the compressor 18 of the cooling device R, and switches the four-way valve 19 so that the high-temperature gas refrigerant discharged from the compressor 18 is converted into the condenser 20 and the decompression as in the above-described heat sterilization operation. It supplies directly to the cylinder cooler 11 without going through the apparatus. Thereby, since the cooling cylinder 8 is heated, the dirt adhering to the inner surface of the cooling cylinder 8 and the surface of the beater 10 can be raised smoothly. When the temperature of the cooling cylinder 8 detected by the temperature sensor 81 rises to a predetermined temperature such as + 35 ° C., for example, the microcomputer 73 stops the compressor 18, rotates the plunger motor 15 in the normal direction, raises the plunger 16, and performs extraction. Open the road. As a result, the cleaning water in which the dirt is dissolved is discharged from the cooling cylinder 8 and is discharged to the sewage through the drainage device 93. Thereafter, the microcomputer 73 reverses the plunger motor 15, lowers the plunger 16, and closes the extraction path.

  In the embodiment, the microcomputer 73 performs the cleaning operation three times in the embodiment, and then ends the cleaning process, sounds the chime 83, and displays the end of the cleaning process on the display 91. When the automatic cleaning switch 87 is operated during the cleaning process, the microcomputer 73 ends the cleaning process at that time. Further, when an abnormal operation is performed on the way, the microcomputer 73 displays that fact on the display 91.

  In this way, in the cleaning process, the plunger 16 is lowered by the plunger motor 15 and the extraction path is closed, water is injected into the cooling cylinder 8 by the water supply electromagnetic valve 42, the beater 10 is rotated, and after a predetermined time has elapsed. Since the plunger motor 15 is moved up by the plunger motor 15 to open the extraction path and perform the washing operation for draining, each operation of water injection, beater rotation, and plunger opening / closing at the time of washing in the cooling cylinder 8 is automated. Thereby, the cleaning operation in the cooling cylinder 8 is remarkably facilitated.

  In particular, if the cleaning operation is performed a plurality of times such as three times in the cleaning process as in the embodiment, the dirt in the cooling cylinder 8 can be reliably removed. In addition, since the high-temperature refrigerant is supplied to the cylinder cooler 11 during the cleaning operation, fats attached to the inner surface of the cooling cylinder 8 and the surface of the beater 10 can be more effectively lifted up. Improved cleaning performance. Further, since the display 91 suggests the next operation to be performed, the operability is greatly improved.

  Next, another embodiment of the cleaning process will be described. In this case, the microcomputer 73 executes the thawing process to the cleaning process by operating the automatic cleaning switch 87.

(4-2) Cleaning inside the cooling cylinder That is, in this case as well, the mix raw material tube 34, the bag pressurizing pipe 7, and the air circuit 51 are first removed from the Y-type mixer 57, and the mix raw material bag 5 is taken out from the inside 2A. deep. Next, in this case, the automatic cleaning switch 87 (first time) is operated. In this case, when the automatic cleaning switch 87 is operated, the microcomputer 73 performs the thawing process in a state where the plunger 16 is lowered by the plunger motor 15 and the extraction path is closed.

(4-2-1) Defrosting Step In this thawing step, the display 91 indicates that the thawing step is in progress. Similarly, the microcomputer 73 operates the compressor 18 of the cooling device R, and switches the four-way valve 19 to convert the high-temperature gas refrigerant discharged from the compressor 18 into the condenser 20 and the decompression as in the above-described heat sterilization operation. It supplies directly to the cylinder cooler 11 without going through the apparatus. As a result, the cooling cylinder 8 is heated, so that the internal frozen dessert is thawed and returned to the mix. When the temperature of the cooling cylinder 8 detected by the temperature sensor 81 rises to a predetermined temperature such as + 20 ° C., the microcomputer 73 stops the compressor 18 and ends the thawing process.

  The microcomputer 73 rings the chime 83 to notify the user of the end of the thawing process, and sets the bucket on the display 91 and then the bucket, and operates the plunger switch 92 to mix. A suggestion that it should be discharged is displayed. The user sets a predetermined bucket below the plunger 16 while viewing the display on the display 91 and operates the plunger switch 92. When the plunger switch 92 is operated, the microcomputer 73 causes the plunger motor 15 to rotate forward to raise the plunger 16 and open the extraction path. As a result, the thawed mix is discharged from the cooling cylinder 8 and stored in the bucket. Thereafter, the plunger switch 92 is operated again. The microcomputer 73 reverses the plunger motor 15 based on this second operation, lowers the plunger 16 and closes the extraction path.

  When the plunger switch 92 is operated for the second time, the microcomputer 73 removes the Y-type mixer 57 from the mix inlet 9 on the display 91, inserts the washing hose H into the mix inlet 9, and automatically cleans the switch 87 (2 The suggestion to operate the second time is displayed in characters or graphics.

(4-2-2) Pre-cleaning process The Y-type mixer 57 is removed from the mix inlet 9 while observing the display of the user, the cleaning hose H is inserted into the mix inlet 9, and then the automatic cleaning switch 87 is operated. Then, the microcomputer 73 opens the water supply electromagnetic valve 42 and injects water into the cooling cylinder 8. This amount of water injection is executed for a predetermined time until the inside of the cooling cylinder 8 becomes full, and then the microcomputer 73 closes the water supply electromagnetic valve 42. Then, the microcomputer 73 shifts to the pre-cleaning process and displays on the display 91 that the pre-cleaning process is being executed. In this pre-cleaning process, the microcomputer 73 rotates the beater 10 with the beater motor 12, stirs the water supplied in the cooling cylinder 8, dissolves the remaining mix adhering to the inner surface of the cooling cylinder 8 and the beater 10 in water. To go. When a predetermined time elapses after the operation of the automatic cleaning switch 87, the microcomputer 73 rotates the plunger motor 15 forward to raise the plunger 16, and opens the extraction path. As a result, the washing water in which the remaining mix is dissolved is discharged from the cooling cylinder 8 and accommodated in the bucket. After a predetermined time when drainage is completed, the microcomputer 73 reverses the plunger motor 15, lowers the plunger 16, closes the extraction path, and ends the pre-cleaning step.

(4-2-3) Cleaning Step When the pre-cleaning step is completed, the microcomputer 73 indicates the end of the pre-cleaning step with the chime 83 and the display 91, and then the drain 91 is attached to the freezer door 14 with the display 91. Then, a detergent is put into the cooling cylinder 8 from the mix inlet 9, and an indication indicating that the automatic cleaning switch 87 is operated is displayed.

  The user sets the drainage device 93, removes the washing hose H from the mix inlet 9 once, puts the detergent into the cooling cylinder 8 from the mix inlet 9, and inserts the washing hose H into the mix inlet 9 again. When the automatic cleaning switch 87 (third time) is operated, the microcomputer 73 shifts to the cleaning process, displays on the display 91 that the cleaning process is being executed, and executes the above-described cleaning operation. Similarly, at this time, the plunger 16 closes the extraction path.

  Subsequent cleaning operations are the same as those described above, and a description thereof will be omitted. In this case as well, the microcomputer 73 performs the cleaning operation three times, then ends the cleaning process, sounds the chime 83, and displays the end of the cleaning process on the display 91. If the automatic cleaning switch 87 is operated between the thawing process and the cleaning process, the microcomputer 73 ends the process at that time. Similarly, when an abnormal operation is performed on the way, the microcomputer 73 displays that fact on the display 91.

  In this way, in addition to the above-described effects, the microcomputer 73 can be instructed to execute each of the thawing process, the pre-cleaning process, and the cleaning process only by operating the single automatic cleaning switch 87. Thus, the operability is improved. In particular, the display 91 displays the progress of the thawing process, the pre-cleaning process, and the cleaning process, and further displays the operation to be performed next. The user operates the automatic cleaning switch 87 by looking at the display on the display 91. In addition, each step can be executed, and the operability is further improved.

  In each embodiment, the present invention is applied to a frozen dessert manufacturing apparatus in which the mix raw material bag 5 is housed in the inside 2A of the cool box 2 and the mix is forcibly supplied to the cooling cylinder 8 by the air pump 27. In addition, the present invention is also effective in a system in which a mix is supplied from a hopper as in the prior art. In that case, a water supply solenoid valve is provided in a water filling tap for supplying water into the hopper. The heating temperature at the time of cleaning shown in the embodiment is not limited to this, and it may be set as appropriate at a temperature at which the cleaning ability with the cleaning water is improved and the user is not burned.

  Furthermore, the predetermined time in the operation of each process described above can be appropriately changed by the setting switch 88 according to the use state and the type of mix. In addition, the order of rotation / stop of the beater 10 and the operation of the plunger 16 can be appropriately changed by the setting switch 88. In addition, the number of times of the cleaning operation in the embodiment and whether or not the high-temperature refrigerant is allowed to flow through the cylinder cooler 11 at that time or whether or not to flow at all times are also set. The switch 88 can be set as appropriate in the microcomputer 73.

It is a partial longitudinal cross-sectional perspective view of the frozen dessert manufacturing apparatus of the Example to which this invention is applied. It is a block diagram regarding the mix supply of the frozen dessert manufacturing apparatus of FIG. It is a perspective view of the Y type mixer and mix inlet of the frozen dessert manufacturing apparatus of FIG. FIG. 4 is a cross-sectional view of the Y-type mixer and the mix inlet of FIG. 3. It is a block diagram of the electric circuit of the frozen dessert manufacturing apparatus of FIG. It is a vertical side view of the cool box and the cooling cylinder part of the frozen dessert manufacturing apparatus of FIG. 1 in a state where the washing hose is removed. It is a vertical side view of the cool box and the cooling cylinder part of the frozen dessert manufacturing apparatus of FIG. 1 with the washing hose attached. It is the vertical side view of the cool box and cooling cylinder part of the frozen dessert manufacturing apparatus of FIG.

Explanation of symbols

H Washing hose SM Frozen dessert production equipment 1 Main body 2 Cold storage 2A Inside 5 Mix raw material bag 7 Bag pressurization pipe 8 Cooling cylinder 9 Mix inlet 10 Beater 11 Cylinder cooler 15 Plunger motor 16 Plunger 18 Compressor 19 Four-way valve 42 Water supply electromagnetic Valve (water supply means)
57 Y-type mixer 73 Microcomputer (control means)
81 Temperature sensor 87 Automatic cleaning switch 91 Display (display means)

Claims (5)

In a frozen confectionery manufacturing apparatus for producing frozen confectionery by cooling while stirring the mix with a beater in a cooling cylinder equipped with a cooler,
A plunger for taking out the frozen dessert from the cooling cylinder;
Drive means for driving the plunger;
Water supply means for injecting water into the cooling cylinder;
Control means,
The control means includes a washing step, and in the washing step, the plunger is closed by the driving means, water is poured into the cooling cylinder by the water supply means, the beater is rotated, and the predetermined time elapses. An apparatus for manufacturing frozen desserts, wherein a washing operation is performed in which the plunger is opened and drained by a driving means.   The said control means performs the said washing | cleaning operation in the said washing | cleaning process in multiple times, The frozen dessert manufacturing apparatus of Claim 1 characterized by the above-mentioned.   The frozen confectionery manufacturing apparatus according to claim 1 or 2, wherein the control means causes a high-temperature refrigerant to flow through the cooler in the cleaning operation. The control means includes an automatic cleaning switch and a display means,
Based on the operation of the automatic washing switch, a thawing step is performed in which a high-temperature refrigerant is allowed to flow through the cooler to defrost the frozen dessert in the cooling cylinder. Based on the operation, with the plunger closed by the driving means, water is poured into the cooling cylinder by the water supply means, the beater is rotated, and the plunger is opened by the driving means after a lapse of a predetermined time. The frozen dessert according to claim 1, 2 or 3, wherein a pre-cleaning step of discharging water is executed, and the cleaning step is executed based on an operation of the automatic cleaning switch after the pre-cleaning step. Manufacturing equipment.   The control means includes a display means, and the display means displays an implementation status of the thawing process, the pre-cleaning process, and the cleaning process, or displays an operation to be performed next in addition to the implementation status. The frozen confectionery manufacturing apparatus according to claim 4.

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