JPS6391043A - Ice cream freezer - Google Patents

Abstract

PURPOSE:To prevent the over-cooling of soft cream and to enable smooth delivery of ice cream, by stopping the refrigeration operation of an ice cream freezer even under transmission of a delivery signal when the hardness of ice cream becomes higher than a prescribed level. CONSTITUTION:A liquid raw material 26 for soft cream, etc., is supplied through a precooler 8 and a carburetor tube 9 into a cylinder 1 to a prescribed level. A stirrer 2 is rotated with a stirring motor 11 while cooling the material with a refrigerator 3 and the operation of the stirring motor 11 is controlled e.g. by the use of a current detector 35, a computing element 36, a comparator 37 and an output controller 39, etc., of a controlling device 31 to keep the soft cream 27, etc., to a prescribed hardness. A lever 6 is lifted to open a delivery port 4a and, at the same time, a cup switch 15 is pushed to continue the transmission of operation order to the output controller 39 and to rotate the motor 11. When the hardness of the ice cream becomes higher than a prescribed level during the above operation, a refrigeration compressor 16 and an air blower 19 for a condenser are stopped and a solenoid valve 20 is closed to stop only the refrigeration operation and continue only the operation of stirring. Overcooling of ice cream can be prevented by this process.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention provides a method for storing soft-serve ice cream, etc. (products) by providing a stirrer for stirring raw materials (i-stirring) in a cylinder cooled by a freezing device, such as a soft-serve ice cream freezer. The present invention relates to a frozen dessert manufacturing device.

[Prior Art] In conventional frozen dessert manufacturing equipment, during the production of soft-serve ice cream, etc. (products), a trap is installed so that a signal indicating that the soft-serve ice cream, etc. is being taken out is always emitted. While the unloading signal is being output, the freezing device and the stirrer are configured to operate at all times, and the stirrer pushes out the soft serve ice cream, etc. in the cylinder from the unloading port. During the pre-cooling process, the stored mix, which is the raw material for soft-serve ice cream, etc., is newly replenished into the cylinder, so this cooling is also performed.

[Problems to be Solved by the Invention] In the conventional method described above, cooling operation is always performed when the unloading signal is output, so when the unloading is continued slowly or when the If there is an abnormality in the dispense detection device and it emits a signal indicating that it is taking out even when it is not in the process of taking out, it may cause the soft serve ice cream to become too hard and become even more difficult to take out. If the stirring motor is not stored properly, the electric stirring motor may be overloaded and the protection device may be activated.

Therefore, the present invention can stop only the cooling operation if the hardness of the soft serve ice cream, etc. exceeds a predetermined value even while the take-out signal is being issued, thereby preventing the soft serve ice cream, etc. from being overcooled. The purpose is to provide a frozen dessert manufacturing device that can produce frozen desserts.

[Means for Solving the Problems] In order to achieve the above object, the present invention is constructed as follows. In other words, frozen desserts or their raw materials are stirred by a stirrer in a cold cylinder cooled by a cooler of a freezing device to produce frozen desserts, and the operation of the freezing device and stirrer is controlled by a hardness adjusting device and a frozen dessert removal detection device. In the frozen dessert manufacturing apparatus configured to control the hardness of the frozen dessert, even if the Q-stack removal detection device detects that the frozen dessert is being taken out, the hardness of the frozen dessert remains at the predetermined level set by the hardness control device K. A means is provided for stopping the operation of the refrigeration system when the hardness exceeds the hardness.

[Function] By configuring as described above, even while the take-out signal is being issued, only the cooling operation can be stopped if the hardness of the soft serve ice cream or the like exceeds a predetermined value.

[Example 1] An example of the present invention will be described below with reference to FIG.

A cylinder for manufacturing JFi soft serve ice cream, etc., 2 is a stirrer for stirring soft serve ice cream, etc., 3 is a cooler fixed to the outer periphery of cylinder 1, 4 is a lid on the side for taking out soft serve ice cream, etc. in cylinder l, 5 is a spring 7 is a plunger that is pressed downward and opens the outlet 4 of the lid 4 when the lever 6 is raised; 8 is a precooler that stores and cools liquid raw materials such as soft cream; 9 is a precooler 8 that stores liquid raw materials; from cylinder l
carburetor tube for replenishing the inside of the cylinder 1 and keeping the height of soft cream, etc. in the cylinder 1 to the lower end, 10
is a pulley fixed to shaft 2f, 1lFi stirring electric motor,
12 is a pulley fixed to the output shaft of the stirring electric motor 1);
13 is a V-belt for transmitting rotation, 15 is a cup switch that closes the contact when the plunger 5 moves upward and takes out soft serve ice cream, etc., 16 is a refrigerant compressor, J7 is a refrigerant discharge pipe, 18 is a refrigerant condenser, J9 is a condenser fan,
20 is a solenoid pulp that is normally closed and opens when energized; 2 is a capillary tube that connects the condenser 18 to the precooling pipe 22''1 connected to the precooler 8; 23 is the solenoid pulp that connects the solenoid pulp 20 to the cooler 3; 24 is a suction pipe that connects the cooler 3 and the compression gJ6, and 25 is a capillary tube that connects the precooling pipe 22 and the suction pipe 24.

The stirrer 2 includes a shaft 2f and a back plate 2e1 that is integral with the shaft 2f.
A rigid shaft 2d and a blade 2 are integral with the back plate 2@.
It consists of a feeding propeller 2C which is rotatably held on a shaft 4b which is integral with the helix 2b and the shaft 4, and which is integral with the blade 2a, the helix 2b and the rigid shaft 2d, respectively. Note that the shaft 2f is rotatably held by the bearing portion 1a of the cylinder l.

Reference numeral 26 indicates a liquid raw material, and 27 indicates a liquid raw material in the cylinder 1 or a soft serve ice cream produced by cooling.

Further, a heat insulating material (not shown) is provided around the cooler 3 and precooler 8 to reduce heat intrusion.

30 is a power source, and 31 is a control device for controlling the operation of the soft-serve ice cream etc. extractor.

31 restraining device includes a voltage detector 32 for detecting the voltage supplied to the device, a frequency detector 33 for detecting the frequency of the power source 3Q, and a motor data storage that stores the characteristics of the stirring electric motor J1. 34, a current detector 35 for detecting the current flowing through the stirring motor 1, and a current detector 35 for detecting the current flowing through the stirring motor 1;
Frequency and stirring 'motor' flow value flowing to JJ and motor data, for stirring! A comparator 37 for comparing the torque value calculated by the calculator 3 for calculating the output torque with the set torque value, and a comparator 37 for comparing the torque value calculated by the calculator 3 for calculating the output torque with the set torque value. A timer 38 for starting cooling again when the time has elapsed, and an output controller 3 for instructing the cooling device and stirring electric motor 11 to start and stop.
It consists of 9.

40 is a torque value setting device that can be set from the outside in order to adjust the hardness.

In the above configuration, when the liquid raw material 26 is introduced from the precooler 8, the liquid raw material 26 flows into the cylinder 1 from the caplet tube 9, and when it reaches the lower end of the caplet tube 9, the flow stops and remains constant inside the cylinder 1. is maintained at a height of

The ξ output controller 39 to which the power supply 3Q is turned on is connected to the compressor 16
It commands the operation of the condenser blower fan 19, opens the solenoid pulp 20, and also commands the operation of the stirring electric dJl. Compressor 16 and stirring electric M4h+! The klls may start operating at the same time, but it is common practice to start them at slight intervals to avoid excessive starting current.

The refrigerant compressed by a pressure of 1 am 16 is discharged from the refrigerant discharge pipe 17
dM through condenser J8! It becomes a liquid, passes through the solenoid pulp 20, is depressurized by the capillary tube 23, flows into the cooler JK, evaporates, cools the liquid raw material 27, and returns to the compressor J6 through the suction pipe 24.

A part of the refrigerant passes through two capillary tubes and is depressurized.
The liquid raw material 26 is evaporated in the pre-cooling pipe 22, cooled, and returned to the suction pipe 24 through the capillary tube 25. Liquid raw material 2
When the mixture 6 reaches a suitable hardness for soft-serve ice cream or the like 27, the electric current flowing through the electric stirring motor 1 gradually increases.

This current value is detected by the current detector 35, and is stored in the motor data storage 34 in the arithmetic unit 36Vc using the power supply voltage detected by the voltage detector 32 and the power supply frequency detected by the frequency detector 33. The output torque value is calculated by comparing with the current motor data. This output torque value is compared in the comparator 37 with the torque value set in the setting device 40, and if it exceeds the set torque, a signal is sent to the output controller 39. When the output controller 39 receives a signal from the comparator 37, the output controller 39 controls the compressor J6.
, commanded to stop the condenser air blower 77 19, stirring electric motor J1, and solenoid pulp 20'! il-close. At the same time, a signal is sent to the timer 38, and the timer 38 starts counting.

Even if the compressor J6 stops, the refrigerant in the condenser 18 flows through the capillary tube 2J to the precooling pipe 22, and the refrigerant in the precooler 8
The liquid raw material 26 is cooled and maintained at 4°C to 10°C. When a predetermined period of time has elapsed, the timer 38 sends a signal to the output controller 39, and the output controller 39 instructs the operation again. In this way, the soft cream etc. 27 is maintained at a predetermined hardness set by the setting device 40.

When taking out the soft cream etc. 27, when the lever 6 is raised, the plunger 5 moves up, opens the take-out port 4a, and the upper end of the plunger 5 pushes the cup switch 15, so that the contact changes from open to closed or from closed to open. While the plunger 5 is pressing the cup switch 15, the output controller 39 continues to issue the operation command. Therefore, the stirring electric motor 11 rotates and the stirrer 2 rotates and the soft serve ice cream etc. 27 is rotated.
is delivered from the outlet 4&, and the liquid raw material 26 of the precooler 8 replenishes the delivered soft serve ice cream pipe 27 and flows into the cylinder 1 from the carburetor tube 9. During this take-out operation, the torque outputted by the calculator 36 is compared with the torque value set in the setting device 40, and if it exceeds the set torque by a predetermined value, the comparator 36
7 issues a signal to the output controller 39, which instructs the compressor J6 and the condenser fan 19 to stop, and closes the solenoid pulp 20. That is, only the cooling operation is stopped. Stop the cooling operation and turn on the stirring fpi
While controlling the operation of only ll, the computing unit 36
At the point when the torque calculated in is reduced by a predetermined value, the ratio*R device 37 issues a signal to the output controller 39, and the output brake 39 commands the operation of the compressor slag condenser blower fan J9, and the solenoid The pulp 20 is released. Command to restart cooling operation. That is, during the rice harvesting operation, the cooling length ffff1 is longer than the stirring length! E! Fire 4r depending on the load of I machine 1! -! will be repeated.

When the lever 6 is lowered, the plunger 5 closes the outlet 4a, and the contact of the cup switch 5 changes from closed to open, or
The circuit goes from open to closed.

Thereafter, as described above, as long as the output torque value calculated by the calculator 36 is less than the 9 torque value set by the setting device 40, the output controller 39 continues to instruct the continuation of operation, and calculates the Even when the output torque value exceeds the torque value set in the setting device 40, the output controller 39 issues a command to stop the operation.

In this example, a frequency detector is used to detect the power supply frequency, but since the frequency is determined by the installation location of the soft serve ice cream, etc., a simple changeover switch may be used. Further, although the timer 38 is used to resume the cooling operation, this can also be done by detecting the temperature of the cooler 3. Furthermore, by not detecting the current immediately after the stirring motor 11 starts operating, it is possible to eliminate the problem of knowing the motor output during startup.

According to the implementation sequence described above, in a side-turning device such as a soft serve ice cream Friede, the load on the stirring electric motor 1 is constantly monitored even when a number of products are being taken out. Even so, if it seems that the cooling is too much, it is possible to stop the cooling operation and prevent the stirring electric motor 1 from being overloaded. In particular, even if there is a malfunction such as an abnormality in the cup switch 15Vc in which it is determined that a take-out operation is in progress, it is possible to prevent the soft serve ice cream, etc. 27 from being excessively cooled during this time, and as a result, damaging the electric stirring motor 11.

[Effects of the Invention] According to the present invention described above, if the hardness of soft serve ice cream, etc. exceeds a predetermined value even while the ejection signal is being issued, only the cooling operation can be stopped. ,
This makes it possible to provide a frozen dessert manufacturing apparatus that can prevent soft-serve ice cream and the like from being overcooled.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the inventive frozen dessert making apparatus. 1... Cylindrical cylinder, 2... Stirrer, 3... Cooler, Jl... Stirring electric motor, 15... Cup switch, J6... Compressor, 37... Comparator , 39...
- Output controller, 40...setting device.

Claims (1)

[Claims] Frozen desserts or their raw materials are stirred by a stirrer in a cylinder cooled by a cooler of a freezing device to produce frozen desserts, and the operation of the freezing device and stirrer is controlled by a hardness adjustment device and a frozen dessert removal detection device. In the frozen dessert manufacturing apparatus, even if the frozen dessert removal detection device detects that the frozen dessert is being taken out, when the hardness of the frozen dessert exceeds the predetermined hardness set by the hardness adjustment device, the above-mentioned A frozen dessert manufacturing device characterized by being provided with means for stopping the operation of the freezing device.