JPH10276677A - Device for producing ice candy - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the abnormality detector of an ice candy-producing device for producing an ice candy such as soft cream, ice cream or frozen sherbet, enabling to always produce the good ice candy. SOLUTION: This device for producing an ice candy is provided with a cooling cylinder 2A constituting a cooling chamber for producing the ice candy, a stirring means disposed in the cooling cylinder 2A and stirring the ice candy or its raw material, and a hardness-controlling device 3 for detecting the hardness of the ice candy in the cooling cylinder 2A. The shift of an operation member of the hardness-controlling device 3 is detected with a Hall element sensor, and the cooling operation of the cooling cylinder is controlled in response to the shift. The cooling operation is controlled by the detection of the hardness- controlling device 3. When cooling operations are started and stopped in a shorter cycle than a prescribed cycle, the freezing of the ice candy is judged to be abnormal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for detecting an abnormality in a frozen dessert producing apparatus for producing frozen desserts such as soft ice cream, ice cream and frozen sorbet.

[0002]

2. Description of the Related Art Conventionally, this kind of frozen dessert production apparatus is disclosed in
As disclosed in JP 79706 (A23G9 / 20), there is disclosed a frozen dessert producing apparatus capable of producing frozen dessert while stirring with a dasher in a freezing cylinder cooled by a refrigerator.

[0003]

In such a frozen dessert manufacturing apparatus, the detection of abnormal freezing and softening of the frozen dessert has been performed by the user of the store at his own discretion. Accordingly, abnormal freezing or softening of frozen desserts, which cannot be determined by a veteran operator, cannot be determined, and there is a problem of selling frozen desserts that are too hard or soft.

[0004] The present invention has been made in view of the above-described problems, and has as its object to always provide a high-quality frozen dessert.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a cooling cylinder defining a cooling chamber for producing a frozen dessert, and a frozen dessert or a frozen dessert provided in the cooling cylinder. Stirring means for stirring the raw materials, and a hardness adjusting device for detecting that the frozen dessert in the cooling cylinder is hardened, controlling the cooling operation by the detection of the hardness adjusting device, in a cycle shorter than a predetermined cycle Provided is a frozen dessert manufacturing apparatus that determines that the frozen operation is abnormally frozen when the cooling operation is repeatedly started and stopped.

When the start and stop of the cooling operation are frequently repeated by the hardness adjusting device, the frozen dessert is in a state of being harder, and thus it is harder than usual but cannot be detected by the hardness adjusting device. Can be detected.

According to the second aspect of the present invention, a cooling cylinder which defines a cooling chamber for manufacturing the frozen dessert, a stirring means provided in the cooling cylinder for stirring the frozen dessert or the frozen dessert material, and a frozen dessert in the cooling cylinder are provided. A hardness adjustment device that detects that the
A first determination unit that detects that the cooling operation is started and stopped a predetermined number of times or more within a predetermined time, and detects whether the first determination unit determines a predetermined number of times or more within a time longer than the predetermined time A frozen dessert production apparatus having a second determination unit that performs the determination.

Since the abnormal freezing phenomenon may return to the normal state even if it occurs once, accurate abnormal freezing detection can be performed by detecting the abnormal freezing phenomenon with the first determining means and the second determining means.

According to a third aspect of the present invention, there is provided an apparatus for producing a frozen dessert according to the first or second aspect, wherein a plurality of cooling cylinders are provided, and in a case of abnormal freezing, the cooling operation of only the corresponding cooling cylinder is stopped. For this reason, sales in the cooling cylinder that is not abnormally frozen can be continued.

According to a fourth aspect of the present invention, there is provided an apparatus for producing a frozen dessert according to the first or second aspect, wherein a plurality of cooling cylinders are provided, and in a case of abnormal freezing, the corresponding cooling cylinder is shifted to a thawing operation. For this reason, in the case of abnormal freezing, the thawing operation is automatically performed, and it is possible to automatically perform what has conventionally depended on the judgment of a skilled operator.

In the invention according to claim 5, when the abnormal freezing is detected, the operation is shifted to the thawing operation, and then the cooling operation is returned a predetermined number of times within a predetermined time, the operation of the corresponding cooling cylinder is stopped. A frozen dessert manufacturing apparatus according to claim 4 is provided.

In the case of mild abnormal freezing, it may return to normal after one thawing and cooling operation. In the case of severe abnormal freezing, the cause must be eliminated. In the case of this severe, the operation is stopped.

According to a sixth aspect of the present invention, there is provided a frozen dessert producing apparatus for outputting a soft dessert softening warning when a non-sale state continues for a predetermined time or more during a cooling operation. It is possible to automatically eliminate a phenomenon that cannot be understood unless judged by a veteran operator or extracted.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a frozen dessert producing apparatus equipped with the present invention, FIG. 2 is a side view of the frozen dessert producing apparatus equipped with the present invention, FIG. 3 is a configuration diagram showing a syrup and a water supply pipe, and FIG. FIG. 5 is a refrigerant circuit diagram showing a flow of hot gas during a thawing operation, and FIG. 6 is a cross-sectional view of a solenoid valve provided with a syrup detection sensor for detecting a sold out syrup. FIG. 7 is a sectional view of a cooling cylinder (cooling cylinder), and FIG.
FIG. 9 is a front view of a Hall element substrate having three Hall elements mounted thereon, FIG. 9 is a front view of the Hall element substrate having three Hall elements mounted thereon, FIG.
11 is a front view of FIG. 10, FIG. 12 is an enlarged side view of the hardness adjusting device, FIG. 13 is a circuit diagram of the control device, FIG. 14 is a relay circuit diagram of each drive component driven by the control device, FIG. Is a circuit diagram of a Hall element sensor, FIG. 16 is a circuit diagram of a syrup detection sensor, FIG. 17 is a main flowchart showing overall processing by the control device, FIG. 18 is a main flowchart showing overall processing by the control device, and FIG. FIG. 20 is a main flowchart showing the entire processing performed by the apparatus.
Is a flowchart showing processing related to the cooling operation, FIG. 21 is a flowchart showing processing related to the thawing operation, FIG. 22 is a flowchart showing processing related to the preparation operation, FIG. 23 is a flowchart showing processing related to the cleaning operation, and FIG. FIG. 25 is a flowchart showing a process related to a cooling / hot gas valve operation, FIG. 26 is a flowchart showing a process related to a compressor operation, and FIG. 27 is a flowchart showing a process related to syrup detection. 28 is a flowchart illustrating processing related to syrup detection, FIG. 29 is a flowchart illustrating processing related to alarm detection, FIG. 30 is a flowchart illustrating processing related to alarm detection, FIG. 31 is a flowchart illustrating processing related to alarm detection, and FIG. FIG. 33 is a flowchart showing processing related to alarm detection, and FIG. Characteristic diagram showing the over distance characteristic, FIG. 3
FIG. 4 is a characteristic diagram showing syrup voltage with or without syrup.

As shown in FIG. 1 and FIG. 2, two ice confectionery extractors (service cocks) 34A and 34B are provided on the upper portion of the ice confection producing apparatus 1 of the present invention, and at least two kinds of ice confections are sold. Can be done. The frozen desserts to be sold can also extract carbonated frozen desserts from soft ice cream and ice cream, that is, frozen ice (frozen carbonated beverages). Furthermore, service cocks 34A, 3
Below 4B, a receiving tray 5 for receiving the leaked frozen dessert is provided.

A machine room 6 is formed at a lower portion of the frozen dessert manufacturing apparatus, and a duct 6A for taking in outside air is provided on the front and side surfaces. Furthermore, this duct 6A
In the upper part of the machine to maintain the equipment in the machine room 6,
A door 10 is provided that can be opened and closed freely. In addition, 8
Reference numeral 0 denotes a pedestal that supports the ice confectionery manufacturing device 1 and is provided with a roller so as to be movable. Reference numeral 81 is provided at an upper portion of the ice confectionery manufacturing device, and a bulletin board for posting an advertisement such as POP is provided. A power cord 83 is provided from the back, and a drain pipe 83 is provided.

Further, the service cock 3 of the frozen dessert manufacturing apparatus 1
A control panel 15 for controlling the devices is provided on 4A and 34B.

Next, the syrup supply path will be described with reference to FIG. Numerals 2A and 2B denote cooling cylinders (cooling cylinders) for producing frozen desserts while cooling them, and rotatable stirring devices (hereinafter referred to as beaters) 33A and 33B are provided therein. A blade 20 for scraping the frozen dessert attached to the wall surfaces of the cooling cylinders 2A and 2B is provided at the outer peripheral end.

The syrup supply path is connected to the cooling cylinder 2
Left and right syrup tanks (liquid tanks) 9A and 9B for storing two types of syrup to be supplied to A and 2B, a carbon dioxide gas tank 7 for pushing out syrup in the left and right syrup tanks 9A and 9B, and left and right syrup tanks 9A and 9B. And left and right syrup valves (liquid valves) 17A, 17B, syrup flow control devices 18A, 18B, check valves 19A,
Left and right relay tanks 14A, 14 connected via 19B
B and the left and right relay tanks 14A and 14B.
And the cooling cylinders 2A and 2B are connected to a stop valve 28.
A, 28B. 29A, 29
B is a sampling valve.

The syrup valves 17A, 17B
Are provided with syrup sensors (liquid sensors) 16A and 16B for detecting passage of syrup. The syrup sensors 16A and 16B detect sold-out syrup.

Next, the water path will be described with reference to FIG.
Water is supplied from an external water supply system to a water tank 2 through a water supply valve 22.
1, the water tank 21 is provided with a water level detecting device 84 for detecting a water level by a float, and a drain valve 76 for draining water in the water tank 21 at predetermined time intervals or at any time. ing.

The water tank 21 may be provided with a liquid sensor for detecting the liquid described above. In this case, even if the water level detection device 84 in the water tank 21 fails, water can be supplied, so that a double drainage countermeasure can be taken.

The water in the water tank 21 is sent to the left and right relay tanks 14A and 14B by a water pump 23.
Left and right water injection valves 24A, 24B, water amount adjusting device 31A,
31B, and are connected to the left and right relay tanks 14A and 14B via check valves 32A and 32B.

The carbon dioxide gas cylinder 7 is connected to the upper portions of the left and right syrup tanks 9A and 9B via a primary regulator 8, and is connected to the left and right secondary regulators 11A and 11A.
1B, left and right carbon dioxide valves 12A, 12B, check valve 13
A, 13B via the left and right relay tank 14A,
It is connected to the upper part of 14B.

The left and right secondary regulators 11A, 11A
B is provided with a carbon dioxide gas detecting device (carbon dioxide sold-out switch) 85, which detects when carbon dioxide gas is exhausted.

The pressure sensors 27A and 27B are provided with relief valves 86A and 86B for automatically releasing the pressure when a pressure equal to or higher than a predetermined gas pressure is applied, and a gas release valve 8
7A and 87B are provided.

Next, the refrigerant circuit will be described with reference to FIGS. 4 and 5 show the flow of the refrigerant.

On the outer surfaces of the left and right cooling cylinders 2A and 2B, left and right heat exchange pipes 3 constituting cooling means and thawing means are provided.
The left and right cylinder temperature sensors 32A and 32B are additionally provided on the outer surface of the coils 1A and 31B.

In the figure, reference numerals 2A and 2B denote the aforementioned cooling cylinders, on which heat exchange pipes 31A and 31B are wound on the outer peripheral surface. A compressor 36 and an air-cooled condenser (condenser) 37 are connected to form a refrigeration cycle together with the heat exchange pipes 31A and 31B.

First, the pipes from the heat exchange pipes 31A and 31B are connected to the compressor 36 via the accumulator 88, and the pipes from the compressor 36 are connected to the air-cooled condenser 37. The air-cooled condenser 37 includes a receiver tank 89, a dryer 90, and a cooling valve 40.
A, 40B, and are connected to heat exchange pipes 31A, 31B via expansion valves 38A, 38B.

Further, a hot gas pipe through which hot gas can flow directly into the heat exchange pipes 31A and 31B from between the compressor 36 and the air-cooled condenser 37 is provided. 41A,
41B is provided.

In front of and behind the compressor 36, a service valve 91 for performing evacuation or the like during service is provided.

Next, FIG. 6 shows the syrup sensors 16A and 1A.
6B (hereinafter, only the syrup sensor 16A) will be described. The syrup sensor 16A is provided together with a syrup valve 17A constituted by an electromagnetic valve.

This is urged downward by a spring at all times, and is screwed with a solenoid valve 92 for sucking the rod upward when energized, and a syrup flow path body 94 forming a syrup flow path 93.
An inflow-side joint 96 which is screwed to the syrup inflow side of the syrup flow path body 94 and has an inflow-side electrode 95;
An outflow side joint 98 having an outflow side electrode 97 is screwed to the syrup flow path body 94 so as to face the inflow side joint 96.

Reference numeral 99 denotes a packing for preventing the syrup from leaking when passing through the syrup.

Next, a torque adjusting mechanism (hardness adjusting device) 3 as shown in FIGS. 7 to 12 is provided at the rear of each of the cooling cylinders 2A and 2B (the cooling cylinder 2A will be described below). Do). In this figure, 42
Is an output shaft at the rear end of the beater 33A in the cooling cylinder 2A. The output shaft 42 penetrates the rear wall of the cooling cylinder 2A, and a bearing 100 is provided.

A rotary member 43 having a circular surface is fixed to the output shaft 42, and a conical groove 44 is formed on an end surface thereof. Reference numeral 46 denotes an operating member which is fitted so as to be in contact with the peripheral surface and the end surface of the rotating member 43. On the end surface thereof, a conical groove 47 corresponding to the groove 44 on the rotating member 43 side is formed. Hard ball 48 between 44 and 47
Is interposed.

A through hole 49 is formed in the operating member 46 so as to keep the end surfaces of the operating member 46 and the rotating member 43 in contact with each other.
Is inserted into the through hole 49 and is coupled to a screw hole 50 formed on the end face of the rotating member 43.

Accordingly, the operation member 46 presses the rotating member 43 by the action of the sprung body 51, and both are normally kept in contact with each other. Further, a continuous V-shaped groove 53 is formed on the outer peripheral surface of the operating member 46, and a V-belt (not shown) is applied to the groove 53. The V belts of the left and right cooling cylinders 2A and 2B transmit the driving force of a single beater motor described later to each operating member 46, respectively.

Further, the rotation of the operating member 46 is transmitted to the rotating member 43 via the ball 48 and rotates, and finally the beater 33A (33B) is rotated. The through hole 49 is a hole formed in an arc shape in the rotation direction. Furthermore,
The actuating member 46 is provided with an actuating piece 54 projecting rearward from the center of its outer surface, and at the tip thereof a circular magnet (hereinafter referred to as a magnet) 56 as a disk-shaped permanent magnet.
Is attached. And each cooling cylinder 2A,
Behind the 2B magnets 56, a Hall element substrate 101 for mounting left and right Hall element sensors 57A, 57B as non-contact sensors is provided at a predetermined interval, and the Hall element sensors 57A, 57B are Donut-shaped circular magnet 102 of the Hall element substrate 101
Attached to.

As shown in FIG. 8, two Hall element sensors 57A and 57B attached to the circular magnet 102 are installed at opposing positions, and as shown in FIG.
There are cases where three Hall element sensors 57A and 57B are attached every 120 degrees. By arranging the plurality of Hall element sensors 57A and 57B in this manner, it is possible to cope with the shake of the output shaft 42.

Reference numeral 103 shown in FIGS. 10 and 11 denotes a substrate adjustment jig for adjusting the Hall element substrate 101. The distance between the magnet 56 of the board adjustment jig 103 and the Hall element sensors 57A and 57B is determined by the board adjustment axis 1
The thickness is adjusted by the Z thickness of 03, the left and right are adjusted by the Y axis mark, and the upper and lower sides are adjusted by the X axis mark.

The mounting portion of the Hall element substrate 101 is fixed to a fixing plate. When the Hall element substrate 101 is adjusted, the fixing plate is adjusted. The coaxial adjustment is not required only by removing the Hall element substrate 101 and attaching a new Hall element substrate 101.

Next, in FIG. 13, the control device 4 comprises a general-purpose microcomputer 58 (one-chip microcomputer) as control means. The microcomputer 58 includes a high-pressure switch 61 for the compressor, a low-pressure switch 62 for the compressor, a thermal relay 63 for the compressor, an internal thermo 64 for the compressor, a thermal relay 66 for the beater motor, a thermal relay 67 for the pump motor, and water. Water level switch (upper) 68 of tank 21, water level switch 6
9 (bottom), liquid level switches 71A and 71B for detecting the liquid levels of the left and right relay tanks 14A and 14B, respectively, are connected.

The microcomputer 58 inputs the left and right syrup detection sensors 16A and 16B, the left and right pressure sensors 27A and 27B, and the left and right Hall element sensors 57.
A, 57B and the outputs of the left and right cylinder temperature sensors 32A, 32B are connected.

The coils of the relays RY1 to RY16 are connected in parallel between the output of the microcomputer 58 and the power supply. The output of the microcomputer 58 is LE
D and each left and right stop switch, left and right cooling switch,
Left and right syrup switch, left and right carbon dioxide switch, left and right defrost switch, left and right preparation switch, left and right washing switch, automatic drain switch, automatic defrost switch, left switch, right switch, △ (up) switch, ▽ (down) used for maintenance A display substrate 73 provided with a switch and a volume for adjusting the set value of the output voltage (Hall voltage) of the left and right Hall element sensors 57A and 57B;
A liquid crystal character display 74 is connected.

Further, as shown in FIG. 14, the compressor 36 (motor) is connected to the contact of the relay RY1, the beater motor 33M is connected to the contact of the relay RY2, the pump motor 23M is connected to the contact of the relay RY3, and the relay RY4 is connected. The contact point is a cooling valve (left) 40A, the contact point of the relay RY5 is a hot gas valve (left) 41A, the contact point of the relay RY6 is a water injection valve (left) 24A, and the contact point of the relay RY7 is a syrup valve (left). 17A, a carbon dioxide valve (left) 12A at a contact of relay RY8, a cooling valve (right) 40B at a contact of relay RY9, a hot gas valve (right) 41B at a contact of relay RY10, and a contact of relay RY11. Is a water injection valve (right) 24B, a syrup valve (right) 17B is provided at a contact of the relay RY12, and a relay RY1 is provided.
The contact 3 has a carbon dioxide valve (right) 12B and a relay R
A water supply valve 22 is provided at the contact of Y14, and a relay RY is provided.
A drain valve 76 of the water tank 21 is connected in series to a power supply to each of the 15 contacts.

The Hall element sensors 57A and 57B have the circuit configuration shown in FIG. 15, and are provided with a plurality (two) of Hall elements H1 and H2. Here, one Hall element sensor 57A, 57B will be described. The Hall elements H1 of the Hall element sensors 57A and 57B generate a voltage when a DC voltage (or current) is applied and a magnetic field is received by the magnet 56 or the like. This voltage is equal to the resistance R
The signal is amplified by a differential amplifier OP1 (operational amplifier 1) via R1, R2 and R3, and connected to the microcomputer 58 via a resistor R4. When there are a plurality of Hall elements H1 and H2, in addition to the Hall element H1, the voltage from the Hall element H2 is amplified by the operational amplifier OP2 (op-amp 2) as described above, and the microcomputer 58 Connected to At this time, if the resistors R4 and R8 have the same resistance, the output voltages from the amplifiers OP1 and OP2 are averaged and input to the microcomputer 58 as a Hall voltage.

Next, the syrup sensors 16A and 16B
Has a circuit configuration shown in FIG.
V) and the syrup and the like are placed on the inflow side and outflow side electrodes 9.
5 and 97, a current flows through the capacitor C1 (DC blocking capacitor) and the resistor R9. At this time,
An AC voltage is generated across the resistor R9, and this voltage is half-wave rectified via the diode D1. After that, the voltage is smoothed by the integrating circuit of the resistor R10 and the capacitor C2 and input to the microcomputer 58 as a syrup voltage.

The operation of the above configuration will be described with reference to the flowcharts shown in FIGS. 17 to 32 show a program of the microcomputer 58. After the microcomputer 58 clears all the programs at the same time as turning on the power, the microcomputer 58 first determines the switch relation for the left cylinder. In step S1 of FIG. 17, it is determined whether or not the left stop switch has been turned on (pressed), and YES is determined.
If so, in step S8, all the operation flags related to the left cooling cylinder 2A are reset, the operation related to the left cooling cylinder 2A is stopped, and the process proceeds to the determination of the switch related to the right cooling cylinder. Note that the operation related to the right cooling cylinder 2B is the same, and the description is omitted (the same applies hereinafter).

Next, if NO in step S1, the flow advances to step S2 to determine whether or not the left cooling switch has been turned on. If YES, the flow advances to step S9 to set a left cooling operation flag and to set the other left cooling operation flag. Reset the operation flag. Next, in step S10, the left Hall element sensor 57A
Is set and stored in the microcomputer 58.

Then, a pull-down flag is set in step S11, and it is determined in step S12 whether the left 10 minute stop flag is set to "1". Where YE
If S, the left thawing operation flag is set in step S13. If NO, the process proceeds to the determination of the switch relation for the right cooling cylinder without setting the left thawing operation flag.

Next, if NO in step S2, the process proceeds to step S3 to determine whether or not the left syrup switch is turned ON. If YES, the left syrup detection sensor 16A outputs a signal in step S14 based on the output of the left syrup detection sensor 16A. It is determined whether or not the syrup has run out. If YES, the left syrup operation flag is set in step S15, and if NO, the flow shifts to determination of a switch relation for the right cooling cylinder.

Next, if NO in step S3, the flow advances to step S4 to determine whether or not the left carbon dioxide switch has been turned on. If YES, the left carbon dioxide gas operation flag is set in step S16 and the right The process proceeds to the determination of the switch for the cooling cylinder. If NO, it is determined in a step S5 whether or not the left thawing switch is turned ON. If YES, a left thawing operation flag is set in a step S17, and the flow shifts to the determination of the switch relation for the right cooling cylinder.

If NO in step S5, the flow advances to step S6 to determine whether or not the left charging switch has been turned ON. If YES, the left charging operation flag is set in step S18, and the other left operation flags are set. Reset and proceed to the judgment of the switch relation for the right cooling cylinder. If NO in step S6, the process proceeds to step S7, in which it is determined whether the left cleaning switch has been turned ON. If YES, the left cleaning operation flag is set in step S19, and the other left operation flags are reset. Then, the process proceeds to the judgment of the switch relation for the right cooling cylinder.

After the same determination of the switch relation for the right cooling cylinder is completed, it is determined in step S20 in FIG. 18 whether the automatic thawing switch has been turned on. If YES, the automatic thawing switch flag is set in step S21. It is determined whether the automatic thawing operation flag has been set in step S22 if NO.
Here, if NO, the automatic decompression operation flag is set in step S23, and if YES, the automatic decompression operation flag is reset and the process proceeds to step S26. Step S20
If NO in step S24, the automatic decompression switch flag is reset in step S24, and the process proceeds to step S26. Even if YES in step S21, the process proceeds to step S26. That is, in the automatic decompression operation, when the automatic decompression switch is pressed once, the automatic decompression operation flag is set, and when the automatic decompression switch is pressed again, the automatic decompression operation flag is reset.

As with the automatic thawing switch, step S2
At 6, it is determined whether or not the automatic drain switch is turned on.
If S, it is determined in step S27 whether or not the automatic drain switch flag is set, and if NO, step S2
At 8, it is determined whether or not the automatic drain operation flag is set. Here, if NO, the automatic drain operation flag is set in step S29, and if YES, the automatic drain operation flag is reset, and the operation shifts to the left cylinder operation. If YES in step S26, the automatic drain switch flag is reset in step S30 and the operation proceeds to the left cylinder operation. Even if YES in step S27, the operation proceeds to the left cylinder operation. That is, in the automatic drain operation, when the automatic drain switch is pressed once, the automatic drain operation flag is set, and when the switch is pressed again, the automatic drain operation flag is reset.

Next, the operation shifts to the operation for the left cylinder, and FIG.
It is determined in step S32 of step 7 whether or not the left cooling operation flag is set. If YES, the left cooling operation is executed in step S33. This cooling operation will be described later. If NO in step S32, the microcomputer proceeds to step S44, where the microcomputer determines whether or not the accumulation of the stop timer provided by the function 58 has elapsed for 10 minutes. If NO, the microcomputer operates (counts) the stop timer in step S45. And YE
If S, a left 10 minute stop flag is set in step S46.

As described above, when 10 minutes have elapsed since the cooling operation of the left cooling cylinder 2A was stopped (the reset of the left cooling operation flag), the left 10 minute stop flag is set. When the switch is turned on and the left cooling operation flag is set, and the left cooling operation is started, the left 10 minute stop flag is not set.

Therefore, when the re-cooling is started when the cooling operation is temporarily stopped due to an operation error or the like, step 1 is executed.
3 and the left decompression operation flag is not set,
It is possible to directly shift to the left cooling operation without performing the left thawing operation described later. As a result, high-quality frozen desserts can be continuously sold without setting a non-sale period as in the related art, so that it is possible to contribute to an improvement in sales and the like.

Next, the process proceeds to step S34, where it is determined whether or not the left syrup operation flag is set. If YES, the left syrup operation is executed in step S35. In this left syrup operation, the microcomputer 58 opens the left syrup valve 17A and pulls out the syrup in the left syrup tank 9A to the position of the detection sensor 16A.

If NO in step S34, the flow advances to step S36 to determine whether or not the left carbon dioxide gas operation flag is set. If YES, the left carbon dioxide gas operation is executed in step S37. In this carbon dioxide operation, the microcomputer 58 opens only the left carbon dioxide valve 12A and introduces carbon dioxide into the left relay tank 14A.

If NO in step S36, the flow advances to step S38 to determine whether the left decompression operation flag is set. If YES, the left decompression operation is executed in step S39. This decompression operation will be described later.

If NO in step S38, the flow advances to step S40 to determine whether or not the left charging operation flag is set. If YES, the left charging operation is executed in step S41. This charging operation will be described later.

If NO in step S40, the flow advances to step S42 to determine whether or not the left cleaning operation flag is set. If YES, the left cleaning operation is executed in step S43. This cleaning operation will be described later. Also, N
In the case of O, the operation shifts to the operation for the right cooling cylinder (the operation is the same as the operation for the left cooling cylinder, so the explanation is omitted and omitted).

Next, a left automatic thawing operation is executed in step S47, a right automatic thawing operation is executed in step S48, an automatic drain operation is executed in step S49, and a step S50 is executed.
Executes the left cooling / hot gas valve operation, and proceeds to step S
A right cooling / hot gas valve operation is performed at 51, a compressor operation is performed at step S52, a left syrup detection operation is performed at step S280, a right syrup detection operation is performed at step S281, and an alarm detection operation is performed at step S282. Execute These operations will be described later. )

Next, the cooling operation (the left cooling operation is taken as an example, and the right cooling operation is also the same) will be described with reference to FIG. Step S
In 53, the microcomputer 58 determines whether or not the left thawing is currently being performed. If YES, in steps S63 to 67, the cooling valve 40A, the pump motor 23M, the water injection valve 2
4A, syrup valve 17A and carbon dioxide valve 12A
Is turned off (closed or stopped).

If NO in step S53, the beater motor 33M is turned on (driven) in step S54 to start stirring in the cooling cylinders 2A and 2B. Next, in step S55, it is determined whether the cooling ON flag is set. Since the start of cooling is NO, in step S56 the current value of the Hall element voltage-the initial voltage value (described above) of the Hall element sensor 57A is set to the set value voltage (for example, a voltage corresponding to a moving distance of 3 mm) -2 mm (voltage conversion). Value) or not.

Here, as described above with reference to FIG. 15, the Hall element sensor generates voltages (Hall voltage) by the Hall elements H1 and H2 and the lines of magnetic force from the magnets, and the voltages amplified by the respective amplifiers are averaged. In this case, the distance (mm) between the Hall element sensor 57A and the magnet 56,
FIG. 33 shows the relationship between the Hall voltage (V) output from the Hall element sensor 57A. According to this relationship, the distance between them (that is, the moving distance of the magnet 56) can be converted into a Hall voltage, and this relationship is stored in the microcomputer 58. At the start of cooling, the Hall voltage of the Hall element sensor 57A is almost the same as the voltage initial value.
The routine proceeds to 57, where a cooling valve ON flag is set, and in step S58, a cooling ON flag is set. Here, the cooling valve ON flag turns on (opens) the cooling valve 40A and turns on (operates) the compressor 36, as described later.

The high-temperature and high-pressure gas refrigerant (hot gas) discharged from the compressor 36 is condensed by the condenser 37, decompressed by the expansion valve 38A via the cooling valve 40A, and then flows into the heat exchange pipe 31A. Evaporate. Thereby, the cooling cylinder 2A is cooled from the surroundings.

Further, the process proceeds from step S55 to step S59, and the current value of the hall voltage-voltage initial value (described above) of the hall element sensor 57A is set to the set value voltage (3
mm) or more. At this point, the determination is still NO, and the process proceeds to step S57.

Next, at step S68, it is determined whether or not the pull-down flag is set. Since it is YES here, it is determined whether or not the pressure ON flag is set at step S69. Since it is NO here, the process proceeds to step S70. It is determined whether the pressure in the relay tank 14A detected by the pressure sensor 27A is, for example, 1.7 kgf / cm 2 or less. If YES, the pump motor 40A is turned on in step S71, the water injection valve 24A is turned on in step S72, the syrup valve 17A is turned on in step S73, and the carbon dioxide gas valve 12 is turned on in step S74.
A is turned on, and a pressure ON flag is set in step S75.

As a result, water, syrup and carbon dioxide gas are supplied into the cooling cylinder 2A via the relay tank 14A, and cooled while being stirred by the beater motor 33A, whereby a semi-fluid (snow-like) frozen dessert is obtained. (Frozen carbonated beverages) are produced. In addition, the process proceeds from step S69 to step S76, and it is determined whether the pressure of the relay tank 14A is 2.2 kgf / cm 2 or more. If NO, the process proceeds to step S71, and if YES, the pump motor 40A in step S77.
Is turned off, and the water injection valve 24A is turned off in step S78.
F, and turns off syrup valve 17A in step S79
Then, in step S80, the carbon dioxide valve 12A is turned off, and in step S81, the pressure ON flag is reset.

As described above, while the pull-down flag is set, 2.2 kgf / cm 2 and 1.
The supply of a mixture of water, syrup and carbon dioxide is controlled at a pressure of 7 kgf / cm 2.

As the cooling of the liquid mixture in the cooling cylinder 2A progresses and the frozen dessert hardens, the torque gradually increases, and this torque is transmitted through the ball 48 to the operating member 46.
The actuating member 46 moves backward against the first strip 51, and the magnet 56 at the tip of the actuating piece 54 also approaches the Hall element sensor 57A (moves rightward in FIG. 33).

When the moving distance (moving distance from the initial state, that is, Hall voltage-voltage initial value) becomes 3 mm or more, the microcomputer 58 proceeds from step S59 to step S60 to reset the cooling valve ON flag, In step S61, the cooling ON flag is reset, and in step S62, the pull-down flag is reset. Here, although the cooling valve ON flag will be described later, here, the cooling valve 40A is turned off (closed) and the compressor 36 is turned off (stopped).

If the frozen dessert in the cooling cylinder 2A softens due to the cooling stop, the torque decreases.
The magnet 56 at the tip of the operating piece 54 is a Hall element sensor 5
Going away from 7A (moving to the left in FIG. 33). Then, after returning by 2 mm or more, the microcomputer 58 proceeds from step S56 to step S57 and starts cooling again.

As described above, the non-contact type Hall element sensor 57A is provided behind the magnet 56 of the operating piece 54, and when the output Hall voltage of the Hall element sensors H1 and H2 changes with the approach or separation of the magnet 56, Working piece 54
Since the amount of movement of the operating piece 54 (operating member 46) is detected without contacting the device, no mechanical failure occurs. In addition, the hardness of the frozen dessert can be extremely easily adjusted by adjusting the electric set value by the volume.

Next, when the pull-down flag is reset in step S62, the microcomputer 58 proceeds from step S68 to step S82, determines whether or not the pressure ON flag is set, and if NO, proceeds to step S83. It is determined whether or not the pressure in the relay tank 14A output from the pressure sensor 27A is, for example, 2.5 kgf / cm 2 or less. If YES, the pump motor 40A is turned on in step S84, and
The water injection valve 24A is turned on at 85, the syrup valve 17A is turned on at step S86, the carbon dioxide valve 12A is turned on at step S87, and the pressure ON flag is set at step S88. Further, the process proceeds from step S82 to step S89, and it is determined whether the pressure of the relay tank 14A is 3.0 kgf / cm 2 or more. If NO, proceed to Step S84, YES
If so, the pump motor 40A is turned off in step S90.
Then, the water injection valve 24A is turned off in step S91, the syrup valve 17A is turned off in step S92, the carbon dioxide valve 12A is turned off in step S93, and the pressure ON flag is reset in step S94.

After the pull-down flag is reset (after the pull-down is completed) as described above, 2.5 kgf /
Water, syrup, between a square centimeter and a pressure of 3.0 kgf / square centimeter (normal selling pressure)
The supply of the mixture of carbon dioxide is controlled.

Here, when the syrup in which the carbon dioxide gas is dissolved in the cooling cylinder 2A and the water are cooled, the water becomes ice,
Since the ice does not dissolve the carbon dioxide gas, the gas is discharged and the pressure in the cooling cylinder 2A rises. The pressure inside the cooling cylinder 2A also increases due to volume expansion caused by the water becoming ice.

Therefore, the pressure at the time of sale before cooling (2.
When the mixed liquid is supplied up to 5 kgf / square centimeter and 3.0 kgf / square centimeter), the pressure in the cooling cylinder 2A after cooling becomes abnormally high, and the first few cups are taken out of the frozen dessert. However, during the pull down, the mixture is supplied at a low pressure (between 1.7 kgf / cm 2 and 2.2 kgf / cm 2), so that such inconvenience is prevented.

Next, the decompression operation (the left decompression operation is taken as an example, and the right decompression operation is the same) will be described with reference to FIG. When starting the thawing operation, the microcomputer 58 first turns on the beater motor 33M in step S95 to stir the inside of the cooling cylinder 2A. Next, in step S96, the microcomputer 58 determines whether or not the accumulation of the decompression determination timer having that function has elapsed by 15 seconds. If NO, the microcomputer 58 executes a decompression determination timer operation (count) in step S97.

When 15 seconds have elapsed since the start of the operation of the beater motor 33M, the microcomputer 58 proceeds to step S9.
6 to step S98 to proceed to the cylinder temperature sensor 32
It is determined whether the output temperature of A is + 7 ° C. or higher. If NO, the hot gas valve ON flag is set in step S99. Here, although the hot gas valve ON flag will be described later, here, the hot gas valve 41A is turned on.
(The cooling valve 40A is turned off), and the compressor 36 is turned on to heat the frozen dessert in the cooling cylinder 2A. Also,
If YES, the thawing operation flag is reset in step S100, and the hot gas valve is turned on in step S101.
Reset the flag. Here, hot gas valve is ON
When the flag is reset, the hot gas valve 41A is turned off and the compressor 36 is turned off. That is, in this case, the decompression operation is not performed.

As described above, in the thawing operation, at the start of the thawing operation by the hot gas, the beater 33A is first operated, and after 15 seconds have elapsed, the temperature of the cooling cylinder 2A based on the output of the cylinder temperature sensor 32A becomes higher than + 7 ° C. When the temperature is low, the thawing operation is performed. Therefore, when the frozen dessert is cooled and solidified at the center of the cooling cylinder 2A, the low temperature is reduced by stirring to the cylinder temperature sensor 32.
A can be detected. Therefore, frozen frozen desserts can be reliably thawed,
It is possible to smoothly sell high-quality frozen desserts in a semi-liquid state.

Next, the charging operation (the left charging operation is taken as an example, and the right charging operation is also the same) will be described with reference to FIG. First, it is determined whether or not the pressure ON flag is set in step S102. If NO, the process proceeds to step S103 to determine whether or not the pressure in the relay tank 14A output from the pressure sensor 27A is, for example, 1.7 kgf / cm 2 or less. to decide. If YES, the pump motor 40A is turned on in step S104, the water injection valve 24A is turned on in step S105, and the syrup valve 1 is turned on in step S106.
7A is turned on, and in step S107, the carbon dioxide valve 12 is turned on.
A is turned on, and a pressure ON flag is set in step S108. In addition, the process proceeds from step S102 to step S109, and the pressure of the relay tank 14A is set to 2.
It is determined whether it is 2 kgf / cm 2 or more. If NO, the process proceeds to step S104, and if YES, the pump motor 40A is turned off in step S110,
The water injection valve 24A is turned off in step S111, the syrup valve 17A is turned off in step S112, the carbon dioxide valve 12A is turned off in step S113, and the pressure ON flag is reset in step S114.

Thereafter, the pressure is turned on again in step S115.
It is determined whether or not the flag is set. If NO, the process proceeds to step S116, where the microcomputer 58 determines whether or not the integration of the constant pressure timer having the function has elapsed for 20 seconds. In S117, a constant pressure timer operation (count) is executed. After 20 seconds have elapsed from the constant pressure timer in step S116, the charging operation flag is reset in step S118. If the pressure ON flag is set in step S115 and YE
In the case of S, the integration of the constant pressure timer is cleared.

Thus, in the charging operation, 1.7 kgf /
The supply of the mixture of water, syrup, and carbon dioxide is controlled between a pressure of 2 square centimeters and a pressure of 2.2 kgf / square centimeter, and the charging operation is terminated when the supply stoppage (reset of the constant pressure flag) time elapses 20 seconds.

Next, the cleaning operation (the left cleaning operation is taken as an example, and the right charging operation is the same) will be described with reference to FIG. First, it is determined whether or not the pressure ON flag is set in step S120. If NO, the process proceeds to step S121 to determine whether or not the pressure in the relay tank 14A output from the pressure sensor 27A is, for example, 1.7 kgf / cm 2 or less. to decide. If YES, the pump motor 40A is turned on in step S122, the water injection valve 24A is turned on in step S123, and the syrup valve 1 is turned on in step S124.
7A is turned on, and a pressure ON flag is set in step S125. Further, the process proceeds from step S120 to step S126, and it is determined whether the pressure of the relay tank 14A is 2.2 kgf / cm 2 or more. If NO, the process proceeds to step S122, and YE
If S, the pump motor 40A is turned off in step S127.
F, and turns off the water injection valve 24A in step S128
Then, the syrup valve 17A is turned off in step S129.
Then, the pressure ON flag is reset in step S130.

Thereafter, it is determined in step S131 whether or not the constant pressure flag (initial reset state) is set. If NO, the process proceeds to step S132 to determine whether or not the pressure ON flag is set again. If NO, the process advances to step S133 to go to the microcomputer 5
8 judges whether or not the accumulation of the constant pressure timer having the function has elapsed for 20 seconds.
In step 4, a constant pressure timer operation (count) is executed. If the pressure ON flag is set in step S132 and the result is YES, the integration of the constant pressure timer is cleared.

When the constant pressure timer has elapsed for 20 seconds in step S133, a constant pressure flag is set in step S136, and the process proceeds from step S131 to step S136.

Subsequently, the microcomputer 58 proceeds to step S137, where the microcomputer 58 determines whether or not the accumulation of the cleaning timer having the function has elapsed for 15 minutes. If NO, the microcomputer 58 executes the cleaning timer operation (count) in step S138. ,
In step S139, the remaining cleaning time is displayed on the liquid crystal display. When the cleaning timer has elapsed for 15 minutes in step S137, the cleaning operation flag is reset in step S140.

As described above, in the cleaning operation, 1.7 kgf /
The supply of a mixture of water and a syrup (in this case, a cleaning liquid) is controlled between a square centimeter and a pressure of 2.2 kgf / square centimeter. The remaining time is displayed, and when 15 minutes have elapsed, the cleaning operation ends.

Next, the automatic decompression operation (the left automatic decompression operation is taken as an example, and the right automatic decompression operation is the same) will be described with reference to FIG.
First, in step S141, it is determined whether or not the automatic decompression operation flag is set.
Proceeding to 42, if no, proceed to step S157 to reset the freeze / thaw flag, clear the automatic thawing protection timer in step S158 and return. Here, the automatic decompression operation flag is set when the automatic decompression switch is pressed once, and reset when the automatic decompression switch is pressed again as described with reference to FIG.

In step S142, it is determined whether or not the cooling operation flag is set.
Proceeding to 143, it is determined whether the thawing operation flag is set. If NO, the process proceeds to step S144, and it is determined whether the freeze thawing flag is set. Here, the freezing and thawing flag is set when abnormal freezing occurs in an abnormal freezing detection operation described later, and is reset in a normal cooling operation. Therefore, the process proceeds from step S144 to step S151, where it is determined whether or not the automatic thawing timer flag is set. In this case also, the automatic thawing timer flag is initially in the reset state, so that the determination becomes NO, and the automatic thawing operation ends and returns.

However, if abnormal freezing occurs and the freeze-thaw flag is set, step S144 becomes YES and the freeze-thaw flag is reset at step S145, the automatic thaw timer flag is set at step S146, and the microcomputer is set at step S147. 58 adds 1 to the automatic decompression counter having that function. Step S148
It is determined whether the automatic decompression counter is 2 or not. Here, since it is still 1 and NO, the decompression operation flag is set in step S149. Next, step S151 is also Y
The microcomputer 58 determines ES, and in step S152, the microcomputer 58 determines whether or not the automatic decompression timer having the function has passed for one hour. If NO, the microcomputer 58 executes the automatic decompression timer operation in step S153. Thus, after that, in order to execute the decompression operation, steps S143 to S143 are executed.
The process proceeds to 157, and after the completion of the decompression, the process proceeds from step S144 to step S151 again.

In step S151, the automatic decompression timer flag is set to the above state, so that the answer is YES, and in step S152, it is determined whether or not the automatic decompression timer has elapsed for one hour. When the automatic thawing timer has elapsed for one hour, the automatic thawing timer flag is reset in step S154, and the automatic thawing timer is cleared in step S155.
At 156, the automatic decompression counter is cleared.

Here, if abnormal freezing occurs again (second time) and the freeze-thaw flag is set before the automatic thawing timer has elapsed for one hour, the process proceeds from step S144 to step S144.
145, 146, 147, 148, and step S1
At 48, the automatic decompression counter becomes 2, so that step S1 is executed.
At 50, abnormal freezing is displayed on the liquid crystal display.

As described above, in the automatic thawing operation, when abnormal freezing occurs during cooling and the freeze / thaw flag is set, the thawing operation is executed for the first time, and the freeze / thaw flag is set again within one hour. Displays abnormal freezing. Also, if one hour or more has passed since the freeze / thaw flag was set, the automatic thawing timer and counter will be cleared,
Even if the freeze / thaw flag is set again, it is the first time to execute the thawing operation.

Next, the cooling / hot gas valve operation (the left cooling / hot gas valve operation is taken as an example, and the right cooling / hot gas valve operation is also described) with reference to FIG. In step S159, it is determined whether or not the pull-down flag is set. If YES, the process proceeds to step S160 and NO
If so, the process proceeds to step S161. Here, for example, if the cooling operation is being performed, the pull-down flag is set first, so that the answer is YES. In step S160, it is determined whether or not the other hot gas valve (the right hot gas valve for the left cylinder) is ON. And cooling valve O
It is determined whether or not the N flag is set. If NO, the cooling valve is turned off in step S162, and if YES, the cooling valve is turned on in step S163. Also,
In step S160, the other hot gas valve is turned on. If YES, the flow proceeds to step S162 to turn off the cooling valve. If the pull-down flag is reset in step S159 to become NO, the flow proceeds to step S161.
Thereafter, the same operation as described above is performed.

Next, in step S164, it is determined whether or not the other cooling valve (the right cooling valve for the left cylinder) is ON. If NO, the hot gas valve O is determined in step S165.
It is determined whether or not the N flag is set. If NO, the hot gas valve is turned off in step S166, and
If ES, turn on the hot gas valve in step S167
I do. In step S164, the other cooling valve is turned on.
If YES, the process proceeds to step S166 to turn off the hot gas valve.

As described above, the right and left cooling valves and hot gas valve operations have different priorities during the pull-down and after the pull-down is completed. In other words, the hot gas valve is prioritized during the pull-down, and even if the cooling valve ON flag is set and the cooling valve is to be turned on, if the other cylinder has turned on the hot gas valve, the cooling valve is turned on after the completion. Also, after the pull-down is completed, the cooling valve is prioritized. Even if the hot gas valve ON flag is set and the hot gas valve is to be turned on, if the other cylinder has the cooling valve turned on, the hot gas valve is turned off after the completion. Turn ON.

Next, the operation of the compressor will be described with reference to FIG. In step S168, it is determined whether or not the compressor low pressure switch is ON. If YES, the compressor is turned ON, and if NO, the compressor is turned OFF. Here, when the cooling valve or the hot gas valve is turned on (open), the pressure on the low pressure side increases by 2 kg / f when the cooling valve or the hot gas valve is turned on (open).
Then, when the cooling valve or the hot gas valve is turned off (closed), there is no pressure from the high pressure side of the compressor, the pressure on the low pressure side drops, and the low pressure switch for the compressor is turned off. As described above, the compressor is operated / stopped by ON / OFF of the compressor pressure switch.

Next, the syrup detection operation (the left syrup detection operation is taken as an example, and the right syrup detection operation is the same) will be described with reference to FIGS. 27, 28 and 34. First, step S1
At 72, it is determined whether or not the syrup operation flag is set. If YES, the process proceeds to step S200, and if NO, the process proceeds to step S173. Here, since the syrup operation flag is set by pressing the syrup switch when the syrup runs out as described above, the determination becomes NO, and the process proceeds to step S173. Step S1
At 73, it is determined whether or not the syrup out flag is set. Since it is NO here, the process proceeds to step S174 to determine whether or not the syrup valve is ON. As described above, the syrup valve is turned on when the relay tank pressure falls below the set value in each operation (cooling, charging, washing). Here, if the syrup valve is ON, the determination becomes YES, and the microcomputer 58 determines in step S175 whether or not the one-second timer of the syrup out determination timer having that function has elapsed. Perform the action.
If one second has elapsed in the syrup out determination timer in step S175, it is determined in step S182 whether or not the one second previous comparison flag has been set.
At 183, a one-second comparison flag is set. Thereby, the process proceeds from step S182 to step S187. In step S184, the microcomputer 58 determines whether or not the difference obtained by subtracting the current syrup voltage from the voltage one second after the previous syrup in the recording having the function is 0.5 V or more, and if YES, sets the syrup out flag. If NO, the process proceeds to step S186, and the current syrup voltage is recorded in the microcomputer 58 as a voltage one second after the previous syrup. That is, here, one second after the syrup valve is turned on (time until the syrup voltage is stabilized), the voltage at the same time as the previous time is compared, and if the difference becomes lower than 0.5 V, it is determined that the syrup is out. .

Next, in step S187, it is determined whether or not the syrup voltage is 0.5 V or more.
At 188, a syrup out flag is set. Here, it is determined that the syrup has run out when the voltage of the syrup valve becomes 0.5 V or less after 1 second from the ON.

Next, it is determined in step S189 whether or not the syrup voltage comparison timer has elapsed for 0.1 second. If NO, the syrup voltage comparison timer operation is executed in step S190. When 0.1 second has elapsed in step S189, the syrup voltage comparison timer is cleared in step S191,
In step S192, it is determined whether the difference obtained by subtracting the previous syrup voltage from the current syrup voltage is 0 V or more (the current syrup voltage is higher than the previous syrup voltage). Here, at the initial stage when the syrup valve is turned ON, the syrup voltage becomes larger than the previous voltage, so that the answer is YES, and step S19
At step S7, the syrup voltage down counter which the microcomputer 58 has as a function is cleared, and
At step 8, the syrup voltage is recorded in the microcomputer 58 as a syrup peak voltage, and at step S199, the syrup voltage is recorded in the microcomputer 58 as the previous syrup voltage. If the syrup voltage is lower than the previous syrup voltage in step S192 and is NO, step S192 is performed.
At 193, 1 is added to the syrup voltage down counter, and at step S194, it is determined whether or not the syrup voltage down counter is 5 times or more.
Go to 199. If the syrup voltage down counter reaches 5 times in step S194, the determination becomes YES, and step S19 is performed.
It is determined in step 5 whether the difference obtained by subtracting the syrup voltage from the syrup peak voltage is 0.3 V or more.
A syrup out flag is set at 96, and if NO, the process proceeds to step S197.

That is, here, the syrup voltage is set to 0.1.
Monitored every second, syrup voltage dropped 5 times in a row,
If the syrup voltage at that time is lower than the syrup peak voltage by 0.3 V or more, it is determined that the syrup has run out.

If YES in step S173 or NO in step S174, step S17
7, 178, 179, 180, the syrup out judgment timer, the syrup voltage down counter, the syrup last voltage,
The syrup peak voltage is cleared, and 1 is set in step S181.
Reset the second comparison flag.

Next, if the syrup operation flag is set in step S172 (when the syrup switch is turned on with the syrup out flag set), the result is YES, and
In step S200, the syrup valve is turned on. In step S201, it is determined whether the syrup voltage comparison timer has elapsed for 0.1 second. If NO, the syrup voltage comparison timer operation is executed in step S213. Step S201
After 0.1 seconds have elapsed, the syrup voltage comparison timer is cleared in step S202, and it is determined in step S203 whether the syrup voltage is 0.5 V or more. Here, since the syrup is supplied by replacing the empty syrup tank, the syrup voltage is initially 0.5 V or less and the result is NO, the process proceeds to step S210, the syrup voltage counter is cleared, and the syrup voltage is reduced in steps S211 and 212. Microcomputer 5 as peak voltage, syrup last time voltage
Record in 8. When the syrup comes into contact with the electrode and the syrup voltage rises and exceeds 0.5 V, step S203 returns to YE.
In step S204, the difference obtained by subtracting the current syrup voltage from the previous syrup voltage (0.1 seconds before) is ± 0.1.
It is determined whether it is V or more. Here, it takes about one second for the syrup voltage to stabilize, so the initial result is YES, and the process proceeds to step S210. Syrup voltage stabilizes and step S2
04, the difference between the previous syrup voltage and the current syrup voltage is ±
If the voltage is within 0.1 V, the result is NO. In step S205, 1 is added to the syrup voltage counter. In step S206, it is determined whether or not the syrup voltage counter has counted 5 times. Is recorded in the microcomputer 58 as the syrup previous voltage. When the syrup voltage counter counts five times in step S206, the result is YES, and in step S207, it is determined whether or not the difference obtained by subtracting the current syrup voltage from the syrup peak voltage is ± 0.2 V or more. Here, since it is normally stable, the answer is NO, and step S2
In step S2, the syrup out flag is reset.
In step 09, the syrup valve is turned off, and in step S283, the syrup operation flag is reset. Step S207
When the difference obtained by subtracting the current syrup voltage from the syrup peak voltage becomes ± 0.2 V or more (the syrup voltage is still unstable), the process proceeds to steps S210, 211 and 212, where the syrup voltage counter is cleared and the syrup voltage is changed The peak voltage and the syrup last time are recorded in the microcomputer 58.

As described above, when the syrup tank is emptied and the syrup runs out, the syrup switch is pressed after the syrup tank is replaced, the syrup valve is turned on, and the syrup flows into the electrode sensor and comes into contact with the electrode sensor. This changes the syrup voltage and stabilizes the voltage when the electrodes are filled with syrup. And the syrup voltage is 5 at 0.1 second intervals.
The syrup break is released (reset) when the difference from the peak voltage is within ± 0.2 V and within ± 0.1 V consecutively.

Next, the alarm detection operation will be described with reference to FIGS. There are various types of alarm detection, and each will be described.

First, the operation of detecting an abnormality in the refrigerant circuit unit will be described with reference to FIG. It is determined in step S214 whether the left and right cooling valves are ON. If YES, the process proceeds to step S216. If NO, it is determined in step S215 whether the left and right hot gas valves are ON. Here, the left and right cooling valves and the left and right hot gas valves are turned on / off by the cooling operation or the thawing operation.
Proceeding to step S216, it is determined whether the compressor is ON. Here, the compressor is cooled as described above,
Alternatively, the pressure of the compressor refrigerant circuit rises / falls due to ON / OFF of the hot gas valve, and the low pressure switch for the compressor is turned ON / OFF, thereby being turned ON / OFF. Normally, when the cooling or hot gas valve is turned on, the pressure of the compressor refrigerant circuit increases, but the compressor is initially turned off because the low pressure switch for the compressor is turned off. Therefore, steps S216 to S217
The microcomputer 58 determines whether or not the compressor protection timer having the function has elapsed for 20 seconds. If NO, the microcomputer 58 executes the compressor protection timer operation in step S218. After a few seconds, when the pressure of the compressor refrigerant circuit rises and exceeds a predetermined pressure (2 kgf), the low pressure switch for the compressor is turned on.
Since the compressor is turned on, the flow advances from step S216 to step S220 to clear the compressor protection timer.

However, if the compressor does not turn on due to some abnormality in the compressor refrigerant circuit, the result is YES if the compressor protection timer has elapsed for 20 seconds in step S217, and the flow advances to step S219 to display the refrigerant circuit unit abnormality display in characters or the like. I do.

As described above, the refrigerant circuit unit abnormality detecting operation is abnormal when the cooling or hot gas valve is ON but the compressor is not ON even after 20 seconds have elapsed.

Next, the valve leak detecting operation will be described with reference to FIG. In step S221, the left and right cooling valves are
It is determined whether it is N or not. If NO, it is determined in step S222 whether the left and right hot gas valves are ON. Step S2
21 or 222 is YES, step S238
Then, the leak timer start flag is reset, and in steps S239 and S240, the leak counter and the leak timer which the microcomputer 58 has as a function are cleared. In steps S221 and 222, the left and right cooling valves and the left and right hot gas valves are not ON and N
If "O", it is determined in step S223 whether the compressor is ON. Here, as described above, the pressure of the compressor refrigerant circuit rises / falls due to the cooling or ON / OFF of the hot gas valve, and the low pressure switch for the compressor is turned ON / OFF as described above. / OFF
I do. Normally, cooling or hot gas valve is off
If so, the pressure of the compressor refrigerant circuit is low, the low pressure switch for the compressor is turned off, and the compressor is off. As a result, step S223 becomes NO and step S2
Proceed to 24 to reset the compressor operation ON flag.

However, when the cooling valve or the hot gas valve leaks, the pressure of the compressor refrigerant circuit increases. When the pressure exceeds a predetermined pressure (2 kgf), the compressor low-pressure switch is turned on and the compressor is also turned on. At this time, step S2
23 is YES, the process proceeds to step S225, and it is determined whether or not the compressor operation ON flag is set. Since it is initially NO, the compressor operation ON flag is set in step S226, and the leak timer start flag is set in step S227. In step S228, 1 is added to the leak counter, and in step S229, it is determined whether or not the leak counter is 2. Here, the leak counter is initially 1
Is NO, and the process proceeds to step S235. Also,
Since the compressor operation ON flag is set in step S226, the process proceeds from step S225 to step S235. Here, since the cooling valve or the hot gas valve is leaking, the compressor is turned on as described above. However, when the compressor is operated because the valve is not completely opened, the pressure of the refrigerant circuit immediately drops, and the compressor is turned on. The low pressure switch turns off and the compressor turns off. At this time, step S
In step S223, the flow advances to step S224 to reset the compressor operation ON flag. Thereafter, when the compressor is turned on again due to valve leak, steps S225, 226, 227, and 22 are performed.
In step S229, the leak counter becomes 2, and the process proceeds to step S230. In step S230, it is determined whether or not a value obtained by subtracting the initial value voltage from the left Hall element voltage is higher than the set value (the syrup in the left cylinder is sufficiently cooled). If YES, the left cooling valve is leaking. Show that. If NO in step S230, it is determined in step S232 whether the value obtained by subtracting the initial voltage from the right Hall element voltage is higher than the set value (the syrup in the right cylinder is sufficiently cooled), and if YES, the right It is displayed that the cooling valve is leaking.
If it is O, it indicates that the hot gas valve is leaking.

It is determined whether or not the leak timer start flag is set in step S235. If YES, it is determined in step S236 whether or not the leak timer has elapsed for one minute. If NO, the leak timer operation is performed in step S237. Execute If one minute has elapsed in the leak timer in step S236, or if the leak timer start flag has not been set in step S235, the process proceeds to step S235.
The leak timer start flag is reset at 238, and the leak counter and the leak timer are cleared at steps S239 and S240.

In this manner, in the valve leak detection operation, although the left and right cooling valves or the left and right hot gas valves are not turned on, the compressor is turned on / off within one minute.
Is repeated twice. If the cooling condition (the Hall element voltage) in the cylinder at that time is sufficiently cooled, the cooling valve is displayed as a leak abnormality, and if the cylinder is not cooled, the hot gas valve is displayed as a leak abnormality. . Where 1
Within the minute means that valve leak frequently occurs, and ON / OFF for one minute or more means that even if there is valve leak, it is slight.

Next, an operation for detecting an abnormal left pressure rise in the left cylinder will be described with reference to FIG. 31 (the same applies to an operation for detecting an abnormal right pressure increase in the right cylinder). First, in step S241, it is determined whether or not the left syrup valve is ON.
Proceed to 242, and if NO, proceed to step S249. Here, YES is determined in step S242 as to whether or not the left pressure supply flag is set. Since the initial state is NO, the left pressure supply flag is set in step S243.
In step S244, the microcomputer 58 records the current pressure of the left relay tank in the left pressure memory having the function, and proceeds to step S245. In the following, the process proceeds from step S242 to step S245. In step S245, it is determined whether or not the left pressure protection timer has elapsed for one minute. If NO, the left pressure protection timer operation is executed. If the left pressure protection timer has elapsed for one minute and the result is YES, the process proceeds to step 247. . In step S247, it is determined whether or not a value obtained by subtracting the left pressure memory from the left pressure of the left relay tank is equal to or greater than 0.5 kgf / square centimeter. If NO, an abnormal left pressure is displayed in step S248, and if NO, in step S249. Clear the left pressure protection timer and go to step S2
At 50, the left pressure supply flag is reset.

As described above, the left pressure rise abnormality detecting operation is as follows.
Record the pressure in the left relay tank when the left syrup valve is turned on. If the left syrup valve is still on after 1 minute, compare the current left relay tank pressure with the pressure memory one minute ago. If it is less than 0.5 kgf / square centimeter, the pressure rise in the left relay tank is detected as abnormal and displayed.

Next, the left abnormal freezing detection operation of the left cylinder will be described with reference to FIG. 32 (the same applies to the right abnormal freezing detection operation of the right cylinder). First, it is determined in step S251 whether or not the left cooling operation flag is set. If YES, it is determined in step S252 whether or not the left thawing operation flag is set. If NO, the process proceeds to step S253. NO in step S251, or YE in step S252
If S, the process proceeds to step S274 to reset the left cooling flag. In step S275, the left freezing timer start flag is reset. In steps S276, 277, 278, and 2
At 79, the microcomputer 58 has the function of left freezing twice, left freezing three times, left freezing 15
Clear the second timer and left freezing 1 minute timer. here,
In step S251, the left cooling operation flag is set, and in step S252, the left thawing operation flag is reset. In step S253, it is determined whether the left cooling valve is ON. If YES, the left cooling flag is set in step S254. It is determined whether or not the flag is set. Since the initial state is NO, the left cooling flag is set in step S255, and the left freezing timer start flag is set in step S256.
In step S257, 1 is added to the left-freezing counter three times. In step S258, it is determined whether the left-freezing counter is three times or not. Here, since it is NO, the process proceeds to step S266.
If the left cooling valve is not ON and NO in step S253, the flow proceeds to step S273 to reset the left cooling flag and proceeds to step S266. If the left cooling valve is set in step S254, the flow proceeds to step S266. (That is, in this case, every time the left cooling valve is turned ON, 1 is added to the left freezing counter three times.)

Next, when the counter for freezing left three times becomes three in step S258, the counter for freezing left three is cleared in step S259, the 15-second freezing timer is cleared in step S260, and the freezing left is performed twice in step S261. The counter is incremented by one, and it is determined in step S262 whether the left-hand-freezing counter is twice.
Proceed to 66. If YES, it is determined whether or not the automatic thawing operation flag is set in step S263. If NO, the left abnormal freezing display is performed. If YES, the left freezing / thawing flag is set. Here, the freeze / thaw flag is a flag used in the automatic thawing operation. (That is, here, 1 is added to the left freezing twice counter every time the left freezing counter becomes three times, and if the left freezing twice counter is set to two and the automatic thawing operation flag is set, the left freezing / thawing is set. Set the flag, and if it has been reset, display abnormal freezing.)

Next, in a step S266, it is determined whether or not the left freezing timer start flag is set.
If it is S, it is determined in step S267 whether or not the one-minute left freezing timer has elapsed. If it is NO, it is determined in step S26.
In step 8, a 1-minute left freezing timer operation is performed, and step S269 is performed.
It is determined whether the 15-second left freezing timer has elapsed for 15 seconds. If NO, the 15-second left freezing timer operation is performed.
If “NO” in the step S266 or “YES” in the step S267, the left freezing timer start flag is reset in a step S275, and the steps S276, 277,
At 78 and 279, the left freezing counter, the left freezing counter, the left freezing 15 second counter, and the left freezing 1 minute timer are cleared. If YES in the step S269, the step S
At 271 and 272, the left freezing counter and the left freezing 15 second counter are cleared.

Thus, the left abnormal freezing detection operation is performed as follows.
The cooling valve is turned on / off three times in 15 seconds, and if this state occurs twice in one minute, it is detected as an abnormally frozen state. At this time, it is determined whether or not the automatic thawing operation flag is set, and if it is set, the left freezing and thawing flag is set and the thawing operation is automatically executed. If not, it is abnormal freezing. Show that.

That is, according to the first aspect of the present invention, the cooling cylinders 2A and 2B defining the cooling chamber for manufacturing the frozen dessert, and the stirring means 33A provided in the cooling cylinders 2A and 2B for stirring the frozen dessert or the frozen dessert raw material, 33B and the cooling cylinder 2
A and 2B are provided with a hardness adjusting device 3 for detecting that the frozen dessert is hardened.

The moving amount of the operating member 46 of the hardness adjusting device 3 is detected by the Hall element sensors 57A and 57B, and the cooling operation is controlled based on the moving amount.

Then, the cooling operation is controlled by the detection of the hardness adjusting device 3, and the frozen dessert manufacturing apparatus 1 is determined to be determined to be abnormally frozen when the cooling operation is repeatedly started and stopped in a cycle shorter than a predetermined cycle.

When the start and stop of the cooling operation are frequently repeated by the hardness adjusting device 3, it is in a state of a hard frozen dessert. It is possible to detect a state that cannot be performed.

According to the second aspect of the present invention, the cooling cylinders 2A and 2B defining the cooling chamber for producing the frozen dessert, and the stirring means 33A provided in the cooling cylinders 2A and 2B for stirring the frozen dessert or the frozen dessert material, 33B and the cooling cylinder 2
A, and a hardness adjusting device 3 for detecting that the frozen dessert in 2B is hardened, and detecting that the cooling operation is started and stopped a predetermined number of times (three times) within a predetermined time (15 seconds). (1) a time (1 minute) longer than the predetermined time (15 seconds) (usually the cooling operation continues for 20 seconds or more)
And a second judging means for detecting whether the first judging means has made a judgment at least a predetermined number of times (twice).

Since the abnormal freezing phenomenon may return to the normal state even if it occurs once, accurate abnormal freezing can be detected by detecting the abnormal freezing phenomenon with the first determining means and the second determining means.

Further, according to the third aspect of the present invention, a plurality of cooling cylinders 2A and 2B are provided, and in the case of abnormal freezing, the cooling operation of only the corresponding cooling cylinders 2A and 2B is stopped and an alarm is displayed. Or the frozen dessert manufacturing apparatus 1 of 2 is provided.

For this reason, sales can be continued with the cooling cylinders 2A and 2B that are not abnormally frozen. Further, the user can know from the abnormal display that the user is in an abnormally frozen state.

Further, according to the invention of claim 4, a plurality of cooling cylinders 2A and 2B are provided, and in the case of abnormal freezing, the corresponding cooling cylinders 2A and 2B are shifted to the thawing operation, and further automatically shifted to the cooling operation. A frozen dessert manufacturing apparatus 1 according to claim 1 or 2 is provided.

[0134] Therefore, in the case of abnormal freezing, the thawing operation is automatically performed, and then the operation automatically shifts to the cooling operation. Therefore, it is possible to automatically perform the operation that has conventionally depended on the judgment of a skilled operator. .

According to the fifth aspect of the present invention, when the abnormal freezing is detected, the operation is shifted to the thawing operation, and then the return to the cooling operation is performed a predetermined number of times (two times) within a predetermined time (one hour), The frozen dessert manufacturing apparatus 1 according to claim 4, wherein the operation of the corresponding cooling cylinders 2A and 2B is stopped and an alarm display is performed.

In the case of mild abnormal freezing, it may return to normal after one thawing and cooling operation. In the case of severe abnormal freezing, the cause must be eliminated. In the case of this severe condition, the operation is stopped, and the user is notified of the abnormal freezing state and the user is urged to remove the cause.

According to the sixth aspect of the present invention, the non-sales state detection is determined from the number of times the syrup valves 28A and 28B are opened and closed in the cooling operation state (not in the pull-down or thawing step).
If the first determination condition (the operation of the syrup valves 28A and 28B is five times or less within one hour) is detected for a longer time (four hours) than the first determination condition, an alarm for softening the frozen dessert is output. If the automatic thawing operation has been performed, the operation automatically shifts to the thawing operation, and then automatically shifts to the cooling operation.

Thus, the judgment of the experienced operator,
A phenomenon that cannot be understood unless it is extracted can be automatically eliminated.

[0139]

According to the first aspect of the present invention, a cooling cylinder which defines a cooling chamber for manufacturing frozen desserts, a stirring means provided in the cooling cylinder for stirring the frozen dessert or the frozen dessert raw material, Equipped with a hardness adjustment device that detects that the frozen dessert is hardened,
Provided is a frozen dessert manufacturing apparatus that controls a cooling operation by detecting a hardness adjusting device and that determines that the frozen operation is abnormally frozen when the cooling operation is repeatedly started and stopped in a cycle shorter than a predetermined cycle.

When the start and stop of the cooling operation are frequently repeated by the hardness adjusting device, the frozen dessert is in a state of being harder. Therefore, the dessert is harder than usual but cannot be detected by the hardness adjusting device. Can be detected.

Further, according to the second aspect of the present invention, a cooling cylinder defining a cooling chamber for producing frozen desserts, a stirring means provided in the cooling cylinder for stirring the frozen dessert or the frozen dessert material, A first adjusting means for detecting that the cooling operation is started or stopped a predetermined number of times or more within a predetermined time, and a hardness adjusting device for detecting that the frozen dessert is hardened; There is provided a frozen dessert manufacturing apparatus having a second determination means for detecting whether the first determination means has made a determination at least a predetermined number of times.

Since the abnormal freezing phenomenon may return to the normal state even if it occurs once, accurate abnormal freezing can be detected by detecting the abnormal freezing phenomenon with the first determining means and the second determining means.

Further, according to the third aspect of the present invention, there is provided a frozen dessert manufacturing apparatus according to the first or second aspect, wherein a plurality of cooling cylinders are provided, and in a case of abnormal freezing, the cooling operation of only the corresponding cooling cylinder is stopped. For this reason, sales in the cooling cylinder that is not abnormally frozen can be continued.

According to the fourth aspect of the present invention, there is provided a frozen dessert manufacturing apparatus according to the first or second aspect, wherein a plurality of cooling cylinders are provided, and in a case of abnormal freezing, the corresponding cooling cylinder is shifted to a thawing operation. . For this reason, in the case of abnormal freezing, the thawing operation is automatically performed, and it is possible to automatically perform what has conventionally depended on the judgment of a skilled operator.

According to the fifth aspect of the present invention, when the abnormal freezing is detected, the operation is shifted to the thawing operation, and the return to the cooling operation is performed a predetermined number of times within a predetermined time, the operation of the corresponding cooling cylinder is performed. A frozen dessert manufacturing apparatus according to claim 4, which is stopped. In the case of mild abnormal freezing, it may return to normal after one thawing and cooling operation. In the case of severe abnormal freezing, the cause must be eliminated. In the case of this severe, the operation is stopped.

Further, according to the invention of claim 6, there is provided a frozen dessert producing apparatus which outputs an alert for softening of frozen dessert when a no-sale state continues for a predetermined time or more during the cooling operation. It is possible to automatically eliminate a phenomenon that cannot be understood unless judged by a veteran operator or extracted.

[Brief description of the drawings]

FIG. 1 is a front view of a frozen dessert manufacturing apparatus equipped with the present invention.

FIG. 2 is a side view of a frozen dessert manufacturing apparatus equipped with the present invention.

FIG. 3 is a configuration diagram showing a syrup and a water supply system pipeline.

FIG. 4 is a refrigerant circuit diagram illustrating a flow of a refrigerant during a cooling operation.

FIG. 5 is a refrigerant circuit diagram showing a flow of hot gas during a thawing operation.

FIG. 6 is a cross-sectional view of a solenoid valve provided with a syrup detection sensor for detecting syrup sold out.

FIG. 7 is a sectional view of a cooling cylinder (cooling cylinder).

FIG. 8 is a front view of a Hall element substrate on which two Hall elements are mounted.

FIG. 9 is a front view of a Hall element substrate on which three Hall elements are mounted.

FIG. 10 is a side view showing a state in which the hardness adjusting device is adjusted.

FIG. 11 is a front view of FIG. 10;

FIG. 12 is an enlarged side view of the hardness adjusting device.

FIG. 13 is a circuit diagram of a control device.

FIG. 14 is a relay circuit diagram of each drive component driven by the control device.

FIG. 15 is a circuit diagram of a Hall element sensor.

FIG. 16 is a circuit diagram of a syrup detection sensor.

FIG. 17 is a main flowchart showing overall processing by the control device.

FIG. 18 is a main flowchart showing the entire processing by the control device.

FIG. 19 is a main flowchart showing overall processing by the control device.

FIG. 20 is a flowchart showing processing related to a cooling operation.

FIG. 21 is a flowchart illustrating a process related to a decompression operation.

FIG. 22 is a flowchart showing a process related to a preparation operation.

FIG. 23 is a flowchart illustrating a process related to a cleaning operation.

FIG. 24 is a flowchart showing processing relating to an automatic decompression operation.

FIG. 25 is a flowchart showing processing related to the cooling / hot gas valve operation.

FIG. 26 is a flowchart illustrating processing related to compressor operation.

FIG. 27 is a flowchart showing processing related to syrup detection.

FIG. 28 is a flowchart showing processing related to syrup detection.

FIG. 29 is a flowchart showing processing related to alarm detection.

FIG. 30 is a flowchart showing a process related to alarm detection.

FIG. 31 is a flowchart showing processing related to alarm detection.

FIG. 32 is a flowchart showing a process related to alarm detection.

FIG. 33 is a characteristic diagram showing Hall voltage-distance characteristics.

FIG. 34 is a characteristic diagram showing syrup voltage with or without syrup.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frozen dessert manufacturing apparatus 2A, 2B Left-right cooling cylinder 3 Hardness adjustment apparatus 17A, 17B Syrup valve (liquid valve) 33A, 33B Stirrer 46 Operating member 57A, 57B Hall element sensor

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shigeo Sato 2-5-5-Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (6)

[Claims] 1. A cooling cylinder which defines a cooling chamber for manufacturing a frozen dessert, a stirring means provided in the cooling cylinder for stirring the frozen dessert or a raw material of the frozen dessert, and detecting that the frozen dessert in the cooling cylinder is hardened. And a hardness adjusting device, wherein the cooling operation is controlled by detecting the hardness adjusting device, and when the cooling operation is repeatedly started and stopped in a cycle shorter than a predetermined cycle, it is determined that the frozen state is abnormal freezing. Manufacturing equipment. 2. A cooling cylinder that defines a cooling chamber for manufacturing the frozen dessert, a stirring means provided in the cooling cylinder for stirring the frozen dessert or the frozen dessert material, and detecting that the frozen dessert in the cooling cylinder is hardened. A first determining unit that detects that the cooling operation is started and stopped a predetermined number of times or more within a predetermined time; and a first determination unit that is a predetermined number of times or more within a time longer than the predetermined time. And a second determining means for detecting whether or not the determination has been made. 3. The frozen dessert manufacturing apparatus according to claim 1, further comprising a plurality of cooling cylinders, wherein in a case of abnormal freezing, the cooling operation of only the cooling cylinder is stopped. 4. The apparatus according to claim 1, wherein a plurality of cooling cylinders are provided, and in a case of abnormal freezing, the corresponding cooling cylinder is shifted to a thawing operation. 5. The method according to claim 1, wherein when the abnormal freezing is detected, the operation is shifted to the thawing operation, and then the operation is returned to the cooling operation a predetermined number of times within a predetermined time, and the operation of the corresponding cooling cylinder is stopped. Item 5. The frozen dessert production apparatus according to Item 4. 6. An apparatus for producing frozen desserts, which outputs a softened dessert warning when the non-sale state continues for a predetermined time or more during the cooling operation.