JP3402438B2 - Frozen dessert device - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a device for pouring frozen desserts such as ice cream and yogurt.

[0002]

2. Description of the Related Art Conventionally, a device shown in FIG. 16 is known as a device for pouring ice cream. In this case, an air cylinder c in which a piston b is slidably fitted in a cylinder a is vertically installed in a freezing chamber d, and an upper surface side of the piston b is a storage chamber e in which a pack A of ice cream is stored. Accordingly, the pressure chamber h is connected to the pouring portion g provided with the cock f, and the lower surface side of the piston b serves as the pressure chamber h. Then, the hose i drawn from the pressure chamber h is connected to the discharge port k of the compressor j, and the working air sucked from the freezing chamber d via the suction port m is supplied to the pressure chamber h to pressurize and raise the piston b. By doing so, the ice cream in the pack A is poured out from the pouring portion g.

[0003]

By the way, in the conventional pouring device of this kind, the operator controls all the amount of ice cream to be poured out, and the compressor j is stopped when an appropriate amount is poured out. Further, since the pouring is stopped by closing the cock f, there is a problem that the pouring amount is not constant. Also, when the ice cream in pack A is used up, it is necessary to replace it with a new pack A, but in the past it was not possible to know the replacement time until the ice cream no longer came out from the pouring part g, and considering the operator's setup, it was extremely difficult. There was also the problem of being inconvenient. The present invention has been completed based on the above circumstances, and an object thereof is to provide a device for dispensing frozen desserts capable of quantitatively dispensing frozen desserts and also capable of detecting the remaining amount. It is in.

[0004]

As a means for achieving the above object, the invention of claim 1 equips a cooling storage chamber with a fluid pressure cylinder in which a piston is slidably fitted in a cylinder. to accommodates a bagged ice confection on one side of the piston, the dispensing device of frozen dessert which is adapted to dispensing sequentially ice confection the working fluid to the other side of the piston by pressurizing and supplying the ice confection Instead , it is characterized in that a detecting means for detecting the flow rate of the working fluid is provided.

According to a second aspect of the present invention, in the first aspect of the present invention, the switching means is capable of switching the discharge operation and the suction operation of the working fluid to the fluid pressure cylinder, and the switching means based on the detection signal of the detection means. Is characterized in that it is provided with a drive means for driving the. According to a third aspect of the invention, in the first or second aspect of the invention, in the fluid pressure cylinder, when the piston reaches the end position in the pressurizing direction, the chamber on the rear surface side of the piston is exposed to the outside. The feature is that the structure is provided with an opening for opening.

According to a fourth aspect of the present invention, a fluid pressure cylinder in which a piston is slidably fitted in the cylinder is provided in the cooling storage chamber, and the storage chamber is provided on one side of the piston. A frozen dessert pouring device which accommodates a packaged frozen dessert and pours the frozen dessert by supplying a working fluid to the pressure chamber provided on the other side of the piston by a fluid supply means to pressurize the piston, And a fluid suction means for sucking a working fluid from the pressure chamber to retract the piston based on a detection signal from the detection means , and The above
The working fluid is a liquid and is supplied from the inside of the tank to the pressure chamber.
The detection means is installed in the tank.
It is characterized by being equipped with a float switch .

The invention of claim 5 is the same as the invention of claim 4.
The fluid supply means is characterized in that it has a function of supplying the working fluid to the pressure chamber for a predetermined time.

[0008]

[Operation and effect of the invention]

<Invention of Claim 1> When a working fluid is supplied to the fluid pressure cylinder, the piston is pressurized so that the bag is compressed and the frozen dessert is poured out. In this case, the amount of supply of the working fluid determines the amount of advance of the piston, which also determines the amount of frozen dessert to be poured out. Therefore, if the flow rate of the working fluid is detected by the detection means and the supply of the working fluid is stopped each time a predetermined flow rate is detected, a fixed amount of liquid can be dispensed.
Further, since the forward position of the piston can be determined by detecting the integrated value of the circulation amount, the remaining amount of the frozen dessert has reached the predetermined amount by outputting a signal when the piston reaches the predetermined forward position. You can know. This makes it possible to foresee when it will be replaced with a new packaged frozen dessert, and it will be easy to use.

<Invention of Claim 2> When the working fluid is supplied to the fluid pressure cylinder, the frozen dessert is poured out as described above.
When the working fluid is sucked from the fluid pressure cylinder, the piston retracts and the packed frozen dessert can be replaced. Therefore, when the detection means causes the piston to reach the end position in the pressurizing direction, the switching means is driven to switch to the suction operation side.
The piston can be retracted automatically. Further, when the piston is retracted to the predetermined position and the mode is switched to the discharge operation side, the pouring standby state can be automatically established.

<Invention of Claim 3> Even if the piston reaches the end position in the pressurizing direction, if the working fluid is supplied and the pressurizing operation is continued due to some inconvenience, the inside of the fluid pressure cylinder becomes high pressure. May be. According to this aspect, according to the present invention, when the piston reaches the end position in the pressurizing direction, even if the working fluid is supplied thereafter, it is released to the outside from the opening, and the inside of the fluid pressure cylinder becomes high pressure. Can be avoided.

<Invention of Claim 4> The working liquid in the tank is sequentially supplied to the pressure chamber.
The frozen dessert is poured out, and the pouring progresses and the liquid level drops to the specified position.
When the float switch detects
Is considered to have reached the pouring end position. Then,
The working liquid in the pressure chamber is sucked by the fluid suction means.
The piston is returned to the pouring start position. When the scheduled pouring is completed, the piston is automatically returned to widen the storage chamber, and the subsequent packed frozen dessert can be quickly replaced.

<Invention of Claim 5 > Even when the working fluid is supplied to the pressure chamber for a predetermined time, that is, even when a fixed amount is discharged, it is detected that the piston has reached the discharge end position. Then, the working fluid in the pressure chamber is sucked and the piston is returned to the pouring start position.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, various embodiments in which the present invention is applied to an ice cream pouring device will be described with reference to the accompanying drawings. <First Embodiment> First, a first embodiment of the present invention will be described with reference to FIG. In the drawing, reference numeral 1 is a freezer consisting of a heat insulating box, a freezer compartment 2 is provided inside, and a door 3 that can be opened and closed is provided on the front surface. The freezer 1 is covered with a casing 5 from the rear surface to the bottom surface, a space 6 on the rear surface side is a space for piping, and a space on the bottom surface side is a machine room 7. A cooler 9 connected to a refrigerator 8 provided in a machine room 7 is installed on the rear surface side in the freezer compartment 2 to cool the inside of the freezer compartment 2. On the front surface side in the freezer compartment 2, an air cylinder 11 in which a piston 13 is fitted tightly and freely slidably in a cylinder 12 having a heat insulating property is installed vertically. The pack accommodating chamber 1 is provided on the upper surface side of the piston 13 in the air cylinder 11.
6 is formed, the elastic pack A in which ice cream is enclosed can be accommodated, and a pressure chamber 17 for supplying and exhausting air is formed on the lower surface side of the piston 13.

An upper end surface of the pack accommodating chamber 16 is opened, a cap 18 is removably attached thereto, and a connection port 19 is opened on the front surface side of the upper end portion and is provided in the pack A. The take-out port B is fitted. Further, a spout pipe 20 is provided in the door 3 in a horizontal penetrating manner, and an inner end portion thereof is connected to the connection port 1 of the pack accommodating chamber 16.
A spout 22 provided with a cock 21 for operating an on-off valve 23 is provided at the outward protruding end while being connected to the valve 9. A compressor 25 driven by a motor (not shown) is installed in the machine chamber 7, and has a suction port 26 and a discharge port 27. On the other hand, a hose 28 is drawn out from the pressure chamber 17 of the air cylinder 11 and can be connected to the suction port 26 and the discharge port 27 by switching. Therefore, when the hose 28 is connected to the discharge port 27 and the compressor 25 is driven, the air in the freezer compartment 2 is sucked and discharged into the pressure chamber 17 of the air cylinder 11, and the piston 13 is pressurized and raised, so that the pack A is Ice cream is poured while being compressed. On the other hand, when the hose 28 is connected to the suction port 26 and the compressor 25 is driven, the air in the pressure chamber 17 is sucked and discharged into the freezing chamber 2, and the pressure chamber 17 leans to a negative pressure, whereby the piston 13 descends. Driven. This is pack A
It is necessary to expand the pack accommodating chamber 16 when the ice cream inside is used up and replaced with a new pack A. In the freezer compartment 2, a pack A of ice cream to be used next can be stored.

The discharge port 27 of the compressor 25 is provided with a flow rate sensor 30 for detecting the flow rate of the air flowing therethrough. This flow sensor 30
Is a volumetric flow sensor, for example, and sends out a signal each time air flows by a predetermined amount. The fact that a certain amount of air has flowed means that the piston 13 rises by a certain amount each time, and accordingly a certain amount of ice cream is poured out. When the detection signal is sent from the flow sensor 30, the motor of the compressor 25 is stopped. Further, based on a signal from the flow rate sensor 30, an integrated value of the air circulation amount is calculated by a control unit (not shown), and a signal is output when the predetermined integrated value is reached. If this signal is issued,
It is detected that the piston 13 has risen to near the end, that is, the remaining amount of ice cream in the pack A has reached a predetermined amount. When this detection signal is issued, an unillustrated display lamp or the like is turned on.

The first embodiment has the structure as described above, and its operation will be described subsequently. In the pack accommodating chamber 16 of the air cylinder 11, a pack A of ice cream is accommodated as shown by the chain line in FIG. To dispense ice cream, the cock 21 is operated to open the open / close valve 23, and at the same time, a dispense switch (not shown) is turned on. As a result, the compressor 25 is driven, and as shown by the arrow, the air in the freezing chamber 2 is sucked from the suction port 26, and the pressure port 17 of the air cylinder 11 is discharged from the discharge port 27.
It is discharged and pressurized. As a result, the piston 13 rises and the pack A is compressed, the ice cream flows out from the outlet B of the pack A, passes through the spout pipe 20 and the spout 2
It is poured from 2 into the container. During this time, the flow rate of the air discharged by the flow rate sensor 30 is being measured, and when a predetermined amount is flown, a detection signal is output to stop the compressor 25 and stop pouring. The piston 13 rises by a predetermined amount by supplying a constant amount of air, and a constant amount of ice cream is poured out correspondingly. At the same time, when the cock 21 is returned and the on-off valve 23 is closed, the ice cream is cut and the ice cream inside is cut off from the outside air. After that, each time the pouring operation is performed, a fixed amount of ice cream is poured in the same manner as described above.

Also, during the above-mentioned pouring operation, the integrated value of the air circulation amount is calculated, and when the integrated value becomes a constant value, a detection signal is issued and the display lamp is turned on. At this time, the piston 13 has risen to near the end,
The remaining amount of ice cream in the pack A is low, and the indicator lamp is lit to inform that the pack A is about to be replaced. When the ice cream in the pack A is used up, the hose 28 drawn from the pressure chamber 17 is replaced with the suction port 26 side to drive the compressor 25, and the air in the pressure chamber 17 is sucked and discharged into the freezing chamber 2. Then, the pressure in the pressure chamber 17 is inclined to a negative pressure, so that the piston 1
3 descends, and the pack storage chamber 16 expands greatly. Then, the cap 18 may be removed, the used pack A may be taken out, and instead, a new pack A stocked in the freezer compartment 2 may be stored. During this period, the flow rate sensor 30 does not function, and the integrated value of the flow rate is reset when the piston 13 descends.

As described above, according to the present embodiment, the compressor 25 is stopped every time a predetermined amount of air is supplied, so that a fixed amount of ice cream can be poured out. Also, since the indicator lamp lights up to notify that the remaining amount of ice cream in the pack A is low,
The replacement time of the pack A can be foreseen. In this embodiment, the on-off valve 23 provided in the pouring portion 22 is a manual type that is operated by the cock 21, but an electromagnetic on-off valve may be used instead. In this case, the compressor 2
The electromagnetic on-off valve may be controlled to be opened and closed in association with the operation and stop of No. 5.

<Second Embodiment> In the ice cream pouring device shown in the first embodiment, there is a case where air is further supplied after the piston 13 reaches the upper end position to continue pressurization. possible. In that case, for example, if the cap 18 is not firmly attached, it may come off and be skipped. The second embodiment is devised to prevent the above situation from occurring, which will be described with reference to FIGS. 2 and 3.

That is, the opening 32 is formed on the outer peripheral surface of the air cylinder 11 at a position corresponding to the lower surface of the piston 13 when the piston 13 rises to the upper end position.
Is formed, and from there the bypass pipe 3 is directed toward the inside of the freezer compartment 2.
3 is projected. Therefore, when the piston 13 is raised to the upper end position by using up the ice cream in the pack A, the piston 13 passes through the opening 32 and the pressure chamber 17 is opened to the freezing chamber 2 through the bypass pipe 33. Therefore, even if air is supplied to the pressure chamber 17 thereafter, the air passes through the bypass pipe 33, and therefore the piston 13 does not rise further. As a result, it is possible to prevent the cap 18 from being skipped.

<Third Embodiment> Next, a third embodiment of the present invention will be described with reference to FIG. In this third embodiment,
A fluid pressure cylinder 35 driven by the antifreeze liquid S is used as a fluid pressure cylinder for pouring ice cream. Therefore, a tank 36 for storing the antifreeze liquid S is equipped on the rear surface side in the freezer compartment 2. On the other hand, in the machine room 7, a pump 37 that pumps up and discharges the antifreeze liquid S is installed. This pump 37 is a reversible pump,
When driven in the forward direction, the antifreeze liquid S is sucked from the first port 38 of the two ports 38 and 39, and the second port 39
When the antifreeze liquid S is discharged from the first port 38, the antifreeze liquid S is sucked from the second port 39 and discharged from the first port 38. The first port 38 is connected to the tank 36, and the second port 39 is connected to the hose 41 pulled out from the pressure chamber 17 of the fluid pressure cylinder 35.

A flow sensor 30 for detecting the flow rate of the antifreeze liquid S supplied to the pressure chamber 17 is provided in the hose 41 drawn out from the pressure chamber 17, as in the first embodiment. ing. According to the flow rate sensor 30, a signal is sent out every time the antifreeze liquid S flows by a predetermined amount, and the drive of the pump 37 is stopped each time.
Further, the integrated value of the flow rate of the antifreeze liquid S is calculated by the control means, and a signal is issued when the integrated value reaches a predetermined integrated value,
The display lamps etc. are turned on. Other structures are the same as those shown in the first embodiment, and the same reference numerals are given to the constituent members having the same function.
A duplicate description will be omitted.

The operation of this third embodiment is as follows. When pouring out the ice cream, when the pouring switch is turned on, the pump 37 is driven in the forward direction and the tank 3
The antifreeze liquid S in 6 is sucked and discharged into the pressure chamber 17 of the fluid pressure cylinder 35 to be pressurized, and the piston 13 rises to pour the ice cream from the pack A. During this period, the flow rate of the antifreeze liquid S discharged by the flow rate sensor 30 is being measured, and when a predetermined amount is flown, a detection signal is output to stop the pump 37 and stop the pouring.
By repeating the above, a fixed amount of ice cream is poured out. Further, when the integrated value of the circulation amount of the antifreeze liquid S becomes a constant value, the display lamp is turned on, and it is known that the remaining amount of ice cream in the pack A is small and therefore the time to replace the pack A is close. When the ice cream in the pack A is used up, the pump 37 is driven in the reverse direction.
As a result, the antifreeze liquid S in the pressure chamber 17 of the fluid pressure cylinder 35 is sucked and returned to the tank 36 side, and the pack storage chamber 1
The piston 13 is lowered to widen 6 greatly. First
The same effect as the embodiment can be obtained.

<Fourth Embodiment> FIG. 5 shows a fourth embodiment. In the fourth embodiment, when the fluid pressure cylinder 35 using the antifreeze liquid S as the working fluid is used, the antifreeze liquid S is further supplied after the piston 13 reaches the upper end position, as in the second embodiment. The purpose is to prevent continuous pressurization. Therefore, on the outer peripheral surface of the fluid pressure cylinder 35, an opening 32 is formed at a position corresponding to the lower surface of the piston 13 when the piston 13 rises to the upper end position, from which the bypass pipe 3 is formed.
3 is projectingly provided, and its tip faces the inside of the tank 36. Therefore, when the piston 13 is raised to the upper end position after the ice cream in the pack A is used up, the piston 13 passes through the opening 32 and the pressure chamber 17 communicates with the tank 36 through the bypass pipe 33. Therefore, even if the antifreeze liquid S is supplied to the pressure chamber 17 thereafter, the antifreeze liquid S is returned to the tank 36 side through the bypass pipe 33, and the piston 13 does not rise further.

<Fifth Embodiment> Next, a fifth embodiment of the present invention will be described with reference to FIGS. In the fifth embodiment, in addition to displaying that the remaining amount of the ice cream in the pack A is low, the operation of lowering the piston 13 to replace the pack A can be automatically performed. Is. In the following, constituent members having the same functions as those of the third embodiment will be described by appropriately assigning the same reference numerals. In the fifth embodiment, as shown in FIG. 6, float switches FS1 to FS for detecting the liquid level of the antifreeze liquid S are stored in the tank 36 storing the antifreeze liquid S.
Three 3 are provided in the vertical direction. The uppermost first float switch FS1 detects the liquid level of the antifreeze liquid S when the piston 13 in the fluid pressure cylinder 35 is at the lower end position. The second float switch FS2, when the piston 13 moves up below the upper end position by a predetermined amount,
That is, the liquid level of the antifreeze liquid S when the remaining amount of ice cream in the pack A becomes small is detected. Further, the third bottom float switch FS3 detects the liquid level of the antifreeze liquid S when the piston 13 is raised to the upper end position, that is, when the ice cream in the pack A is used up.

Further, a control circuit as shown in FIG. 7 is provided. Here, PM is a reversible pump motor for driving the pump 37, and SW is a pouring switch. Relay x
Reference numeral 1 controls ON / OFF of the pump motor PM, and relay X2 controls forward rotation and reverse rotation of the pump motor PM. L is a lamp that indicates the time to replace the pack A. The relays X1 and X2 and the lamp L are connected to the output side of the sequencer 43, and the float switches FS1 to FS3 and the pouring switch SW are connected to the input side, and the float switches FS1 to FS3 are connected.
According to the on / off state of the pouring switch SW, the energization and disconnection of the relays X1 and X2 and the lamp L are controlled.

Next, the operation of this fifth embodiment will be described. During normal pouring, by turning on the pouring switch SW, the relay X1 is excited and the pump motor PM is normally driven. Thereby, the antifreeze liquid S is supplied to the pressure chamber 17 of the fluid pressure cylinder 35 via the pump 37, and the piston 1
As 3 rises, the ice cream in pack A is poured out. After that, ice cream is dispensed every time the dispense switch SW is turned on. Piping progresses and piston 13
Rises to a position lower than the upper end position by a predetermined amount, and accordingly the liquid level of the antifreeze liquid S in the tank 36 drops below the second float switch FS2, and when it is turned off, the lamp L lights up and the pack A It is informed that the amount of ice cream inside is low.

When the ice cream in the pack A is used up further and the piston 13 reaches the upper end position, the liquid level of the antifreeze liquid S in the tank 36 drops below the third float switch FS3 and turns off. , Relay X
1, X2 are excited and the pump motor PM is driven in reverse. As a result, the antifreeze liquid S in the pressure chamber 17 is returned to the inside of the tank 36 via the pump 37, and the inside of the pressure chamber 17 leans to a negative pressure, whereby the piston 13 descends. When the piston 13 descends to the lower end position, the liquid level of the antifreeze liquid S in the tank 36 rises to the position of the first float switch FS1 and turns it on, the excitation of the relays X1 and X2 is released, and the pump motor PM stops. To do. This enables the pack A to be replaced.

As described above, in the fifth embodiment, when the remaining amount of ice cream in the pack A becomes low, it can be displayed by the lamp L, and the operation of lowering the piston 13 to replace the pack A is possible. Can be done automatically. It should be noted that the float switch for detecting the remaining amount is an arbitrary position such as a position that can detect, for example, when the piston 13 moves up by half the stroke, that is, when the remaining amount of the ice cream in the pack A becomes half. It is also possible to provide a plurality of such float switches, and it is possible to detect the remaining amount more finely.

<Sixth Embodiment> FIG. 8 shows a sixth embodiment. In the sixth embodiment, the piston 13 is controlled to detect the remaining amount of ice cream and automatically lower the piston 13.
When detecting the position of, the position is detected by the piston 13 itself. That is, the magnet 45 is fitted around the outer circumference of the piston 13, and the reed switch 46 is provided at a predetermined position on the outer circumference of the cylinder 12 having different heights. Also in this case, the reed switch for remaining amount detection is provided at an arbitrary position, and the number thereof is also arbitrary.

<Seventh Embodiment> A seventh embodiment shown in FIG. 9 is another mode in which the position is detected by the piston 13 itself, and the piston 13 is provided at a predetermined position on the inner circumference of the cylinder 12. A push button switch 48 that is pressed by itself is provided. Similarly, the push button switch for detecting the remaining amount is provided at an arbitrary position, and the number thereof is also arbitrary.

<Eighth Embodiment> Next, an eighth embodiment of the present invention will be described with reference to FIGS. This 8th
The embodiment can be said to be a modification of the above-described fifth embodiment, and the structure has a part in common with that disclosed in FIG. 6, and parts having the same function are denoted by the same reference numerals. A duplicate description will be omitted, and different structural parts will be described below. In FIG. 10, the fluid pressure cylinder 35 is vertically mounted on the back side of the door 3 via a mounting tool 50, and the pack A is replaced by the door 3
Is opened and the fluid pressure cylinder 35 is taken out of the refrigerator. The pump 37 is a pump motor PM (see FIG. 11).
It is a reversible pump driven in both forward and reverse directions. A pouring switch 51 that is turned on / off in association with the opening / closing operation of the cock 21 is provided above the pouring portion 22, and the pump motor PM is normally driven in the on state and stopped in the off state. Works like. Further, float switches FS10 and FS11 for detecting the liquid level of the antifreeze liquid S are provided in the tank 36 that stores the antifreeze liquid S at the top and bottom. The upper float switch FS10 detects the liquid level of the antifreeze liquid S when the piston 13 in the fluid pressure cylinder 35 is at the lower end position, and the lower float switch FS11.
Functions to detect the liquid level of the antifreeze liquid S when the piston 13 has risen to the upper end position, that is, when the ice cream in the pack A has been used up.

Further, as shown in FIG. 11, it has a control section 53 in which a microcomputer is mounted. The pouring switch 51 and the upper and lower float switches FS10 and FS11 are connected to the input side of the control unit 53. A pump motor PM and a pack replacement lamp 55 are connected to the output side of the control unit 53 via a motor drive control unit 54. The pack replacement lamp 55 is mounted on, for example, an operation panel (not shown) provided on the surface of the door 3.

The operation of the eighth embodiment is as follows. The controller 53 executes the manual pouring routine shown in the flowchart of FIG. To pour out ice cream, a container is prepared and the cock 21 is operated to open the pour-out portion 22. Since the pouring switch 51 is turned on accordingly, step S1 of FIG. 12 becomes "YES" and the pump motor PM rotates in the normal direction in step S2, that is, the pump 37 is driven in the forward direction. Then, in step S3, it is determined whether or not the lower float switch FS11 is on, and if the piston 13 has not reached the upper end position, the lower float switch FS11 is on, so step S3 becomes "YES". The forward rotation drive of the pump 37 is continued until the pouring switch 51 is turned off. Then, the antifreeze liquid S in the tank 36 is pumped up and supplied into the pressure chamber 17 of the fluid pressure cylinder 35 to be pressurized. This causes the piston 13 to rise and pack A
Is compressed, and the ice cream is poured into the container from the pouring portion 22.

When the proper amount is dispensed, the cock 21 is operated in the closing direction. Then, the pouring switch 51 is turned off and step S4 becomes "YES", and step S5
At, the pump motor PM, that is, the pump 37 is stopped, and the pouring is completed. Following this, the spout 22 is also closed. By repeating the above, ice cream is sequentially poured out. When the pouring progresses and the ice cream in the pack A is used up, the piston 13 reaches the upper end position, at which time the liquid level of the antifreeze liquid S in the tank 36 drops to a predetermined position, and the lower float switch FS11 is turned off. Become. Then, step S3 becomes "NO",
In step S6, the pack replacement lamp 55 is turned on, and in step S7, the pump motor PM, that is, the pump 37 is stopped. Subsequently, in step S8, the pump motor PM reversely rotates, that is, the pump 37
Is driven in reverse. As a result, the antifreeze liquid S in the pressure chamber 17 of the fluid pressure cylinder 35 is sucked and returned into the tank 36, and the inside of the pressure chamber 17 tilts to a negative pressure, whereby the piston 13 descends and the pack accommodating chamber 16 gradually expands. .

When the piston 13 descends to the lower end position, the liquid level of the antifreeze liquid S in the tank 36 becomes the upper float switch F.
Since it is raised to the position of S10 and turned on, step S9 becomes "YES", and the pump motor PM, that is, the pump 37 is stopped in step S5. Here, it is preferable that the pack replacement lamp 55 be turned off.
Then, the door 3 may be opened, the fluid pressure cylinder 35 may be taken out of the refrigerator, the cap 18 may be removed, and the used pack A may be taken out and replaced with a new pack A.

As described above, according to the eighth embodiment, when the ice cream in the pack A is completely poured out, the piston 13 of the fluid pressure cylinder 35 is automatically returned to the lower end position and the pack accommodating chamber 16 is widened. Then, the subsequent exchange with a new pack A can be quickly performed.
In addition, after the ice cream in the pack A is completely poured out, if the piston 13 is not lowered, that is, the door 3 is opened with the antifreeze liquid S being fully supplied into the pressure chamber 17, the door 3 may be opened depending on the model. The balance may be lost and the device may tilt. In that respect, in this embodiment, the antifreeze solution S is immediately fed when the ice cream is completely poured out.
Is returned to the tank 36 side, and when the piston 13 reaches the lower end position and the preparation for replacement is completed, the pack replacement lamp 55 switches from a lighting state to a non-lighting state. Such a problem is prevented in advance.

<Ninth Embodiment> FIGS. 13 to 15 show a ninth embodiment of the present invention. The ninth embodiment exemplifies a device having a switching function between manual dispensing and fixed amount dispensing. Therefore, a fixed amount dispensing switch 57 is provided on an operation panel (not shown) provided on the surface of the door 3 or the like. The fixed amount dispensing switch 57 functions to switch to manual dispensing when turned off and to fixed amount when turned on. The ninth embodiment has a control section 53A as shown in FIG.
With the pouring switch 51, the upper and lower float switches FS10 and FS11 similar to those shown in the embodiment,
It is connected to the input side of the control unit 53A. Control unit 53A
Is equipped with a fixed amount dispensing timer 58. The fixed amount dispensing timer 58 can preset the forward rotation time of the pump motor PM. The pouring switch 51 is
Functions as a trigger for fixed-volume dispensing. Other structures are similar to those of the eighth embodiment.

Next, the operation of the ninth embodiment will be described. The control unit 53A executes the programs shown in the flowcharts of FIGS. 14 and 15. First, in the main routine of FIG. 14, in step S11, the fixed amount dispensing switch 5
It is determined whether or not 7 is ON, and the fixed amount dispensing switch 5
If 7 is off, step S11 becomes "NO",
The manual pouring routine of step S12 is executed. Since the manual pouring routine is the same as that shown in the eighth embodiment, the description thereof will be omitted.

On the other hand, if the fixed quantity dispensing switch 57 is turned on, step S11 becomes "YES", and step S
Thirteen quantitative dispensing routines are executed. This quantitative dispensing routine is as shown in the flowchart of FIG. That is, when the cock 21 is opened, the pouring switch 51 is turned on, so that step S21 of FIG. 15 becomes "YES", the fixed amount pouring timer 58 is activated in step S22, and the pump motor PM is turned on in step S23. In other words, the pump 37 is driven in the forward direction. If the lower float switch FS11 is not turned off, step S24 becomes "YES" and the forward rotation drive of the pump 37 is continued, and the antifreeze liquid S in the tank 36 is supplied into the pressure chamber 17 of the fluid pressure cylinder 35. Is pressed and the ice cream is poured into the container from the pouring portion 22.

After the lapse of a predetermined time, step S25 becomes "YES", so that the pump motor PM, that is, the pump 37 is stopped in step S26. after that,
The cock 21 is closed manually. As described above, with the opening operation of the cock 21 as a trigger, the fixed amount of ice cream is sequentially dispensed.

When the ice cream in the pack A is used up due to the pouring out, the piston 13 reaches the upper end position, the liquid level of the antifreeze liquid S in the tank 36 is lowered, and the lower float switch FS11 is turned off. Is "N
"O", and the pack replacement lamp 55 in step S27.
Lights up and the pump motor PM, that is, the pump 37 stops in step S28. Subsequently, in step S29, the pump motor PM is reversely rotated, that is, the pump 37 is reversely driven. As a result, the antifreeze liquid S in the pressure chamber 17 of the fluid pressure cylinder 35 is sucked and returned into the tank 36, the piston 13 descends, and the pack accommodating chamber 16 is gradually expanded. When the piston 13 moves down to the lower end position, the upper float switch FS10 is turned on, so that step S30 becomes "YES", and the pump motor PM, that is, the pump 37, in step S26.
Stops. Then, the door 3 may be opened and the pack A may be replaced.

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition to the above, various modifications can be made without departing from the scope of the invention. ( 1 ) The ice cream referred to in the above embodiment includes both soft ice cream and hard ice cream, and the present invention is not limited to ice cream, but a device for pouring out other frozen desserts such as yogurt and sorbet. It can be widely applied in general.

[Brief description of drawings]

FIG. 1 is a sectional view of a first embodiment of the present invention.

FIG. 2 is a sectional view of a second embodiment.

FIG. 3 is a partially enlarged cross-sectional view thereof.

FIG. 4 is a sectional view of a third embodiment.

FIG. 5 is a sectional view of a fourth embodiment.

FIG. 6 is a sectional view of a fifth embodiment.

[Figure 7] Control circuit diagram

FIG. 8 is a partially cutaway sectional view of a fluid pressure cylinder according to a sixth embodiment.

FIG. 9 is a partially cutaway sectional view of a fluid pressure cylinder according to a seventh embodiment.

FIG. 10 is a sectional view of an eighth embodiment.

FIG. 11 is a block diagram of the control mechanism.

FIG. 12 is a flowchart of a manual pouring routine.

FIG. 13 is a block diagram of a control mechanism of a ninth embodiment.

FIG. 14 is a flowchart of a main routine.

FIG. 15: Flowchart of quantitative dispensing routine

FIG. 16 is a sectional view of a conventional example.

[Explanation of symbols]

A ... Pack of ice cream 2 ... Freezer 11 ... Air cylinder 12 ... Cylinder 13 ... Piston 16 ... Pack storage chamber 17 ... Pressure chamber 21 ... Cock 22 ... Pouring part 25 ... Compressor 27 ... Discharge port 30 ... Flow rate sensor 32 ... Opening 33 ... Bypass pipe S ... Antifreeze 35 ... Fluid pressure cylinder 36 ... Tank 37 ... (Reversible) pump FS1 to FS3 ... Float switch 45
… Magnet 46… Reed switch 48… Push button switch PM… Pump motor FS10… Upper float switch FS11… Lower float switch 51… Pouring switch 53… Control unit 5
4 ... Motor drive control unit 55 ... Pack replacement lamp 53
A ... Control unit 57 ... Fixed amount dispensing switch 58 ... Fixed amount dispensing timer

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tsutomu Iwata 16-16 Hoshizaki Electric Co., Ltd., South Building, Sakaemachi, Toyoake City, Aichi Prefecture −51170 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) A23G 1/00-9/30

Claims (5)

(57) [Claims] 1. A fluid pressure cylinder in which a piston is slidably fitted in the cylinder is provided in a cooling storage chamber, a bag of frozen dessert is stored in one side of the piston, and the other side of the piston operates. A frozen dessert dispenser configured to sequentially dispense frozen desserts by supplying a fluid and pressurizing the frozen dessert.
Instead, a device for pouring frozen desserts is provided with a detection means for detecting the flow rate of the working fluid. 2. A switching means capable of switching a discharge operation and a suction operation of a working fluid to the fluid pressure cylinder, and a drive means for driving the switching means based on a detection signal of the detection means. The dispenser for frozen dessert according to claim 1. 3. The fluid pressure cylinder is provided with an opening that opens a chamber on the rear surface side of the piston to the outside when the piston reaches the end position in the pressurizing direction. The device for dispensing frozen desserts according to claim 1 or 2. 4. A fluid pressure cylinder in which a piston is slidably fitted in the cylinder is provided in a cooling storage chamber, and a bagging frozen dessert is stored in a storage chamber provided on one side of the piston. In a frozen dessert dispensing device configured to dispense a frozen dessert by supplying a working fluid by a fluid supply means to a pressure chamber provided on the other side of the piston to pressurize the frozen dessert, and the piston reaches a dispensing end position. And a fluid suction means for sucking the working fluid from the pressure chamber to retract the piston based on the detection signal from the sensing means, and the working fluid is a liquid. Is supplied from the inside of the tank to the pressure chamber, and the detecting means is composed of a float switch equipped in the tank. 5. The frozen dessert pouring apparatus according to claim 4, wherein the fluid supply means has a function of supplying a working fluid to the pressure chamber for a predetermined time.