JPH0350696Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to frozen dessert manufacturing devices such as soft serve ice cream freezers, shake freezers, and fruit/dessert makers, and particularly relates to improvements in temperature control means for frozen desserts.

[Conventional technology]

FIG. 6 is a sectional view showing the schematic structure of a known soft serve ice cream freezer. In Figure 6, 1
is a cylinder, 2 is a stirrer, 3 is an eccentric rod, 4 is a cooler, 5 is a thermostat, 6 is a temperature sensing part, 7 is a precooler, 8 is a carburetor tube, 9 is a mixer, 10 is a stirrer motor , 11 is cream. This soft serve ice cream freezer performs pull-down and heat leak operations as explained below.

Put the specified amount of Mix 9 into the cylinder 1 of the soft serve ice cream freezer, and turn it into the carburetor tube 8.
is installed, and the precooler 7 is filled with mix 9.
Then, when a compressor, a fan motor, etc. (not shown) are put into operation together with the stirrer motor 10, the stirrer 2 rotates and the mix 9 is stirred, and the cooling system enters cooling operation, and the cooler 4 The cream 11 in the cylinder 1 is cooled by this.
The cooling temperature by the cooler 4 is detected by a thermostat temperature sensing section 6, and when the detected temperature falls below a predetermined level, the thermostat 5 is turned off.
Then, the agitator motor 10 stops operating, and the compressor, fan motor, etc. also stop operating, and the cooling operation stops.

In this state, heat from the outside enters into the cylinder 1, so the temperature of the cream 11 gradually rises. When the temperature of the cooler 4 reaches a predetermined level or higher, the temperature is detected by the thermostat temperature sensing section 6, and the thermostat 5 is turned on. Then, the agitator motor 10, the compressor, the fan motor, etc. restart operation, and the cream 11 is cooled again. Thereafter, the heat leak operation is repeated in the same manner to keep the cream 11 at an appropriate temperature.

[Problem that the invention attempts to solve]

In the thermostat type temperature control means as described above, since the thermostat temperature sensing part 6 as a temperature sensor detects the temperature of the outer cylinder of the cooler 4,
Depending on the operating conditions of the cooling system, the relationship between the temperature of the cream 11 and the temperature of the cooler 4 may not be constant.

That is, during pull-down when the ambient temperature is low, the temperature of the outer cylinder of the cooler 4 decreases quickly, and the thermostat 5 turns OFF before the cream 11 reaches an appropriate temperature, stopping the cooling system.
After that, when the temperature of the cooler 4 rises to a predetermined level due to the heat entering the outside air, the thermostat 5 is turned on again and the cooling operation starts again. Because it is so fast, the thermostat 5 is turned off before the cream 11 is cooled to a predetermined level. By repeating the cooling operation and stopping as described above, the temperature of the cream 11 in the cylinder 1 gradually decreases to an appropriate temperature.
There is a problem in that it takes a long time to reach the appropriate temperature.

In addition, when the ambient temperature is high, the temperature of the outer cylinder of the cooler 4 decreases slowly and the thermostat temperature sensing part 6
is affected by the ambient temperature, so there is a delay in turning off the thermostat 5 even though the cream 11 in the cylinder 1 has been cooled to an appropriate temperature. As a result, there is a problem in that it takes a long time to stop the cooling operation.

In the case of the thermostatic method, a temperature difference occurs between the thermostat temperature sensing part 6 and the cream 11 in the cylinder 1 due to changes in the ambient temperature, and it takes a long time to pull down the cream. It was hot.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a frozen dessert manufacturing apparatus that can pull down ice cream in a short time without being affected by ambient temperature and can quickly supply frozen desserts such as soft serve ice cream at an appropriate temperature.

[Means for solving problems]

In order to solve the above problems and achieve the purpose, the present invention takes the following measures. In other words, there is a cylinder with a built-in stirrer and an eccentric rod for stirring raw materials such as cream, a cooler installed around this cylinder, and by turning on and off this cooler, the raw materials inside the cylinder are kept at an appropriate temperature. In a frozen dessert manufacturing apparatus equipped with a control means for controlling temperature,
The control means directly detects the temperature of the raw material such as cream using a temperature sensor provided at the tip of the inner cylinder of the eccentric rod, and operates or stops the cooling system based on this detection information. Turn on the cooler
Configured to control off.

[Effect]

By taking such measures, the temperature of the raw material inside the cylinder is directly detected by the temperature sensor attached to the tip of the eccentric rod inside the cylinder, and the temperature is controlled based on this, so the environmental temperature can be controlled. or unaffected by changes in cooler temperature.
It becomes possible to quickly and accurately maintain the temperature of raw materials such as cream at an appropriate temperature.

〔Example〕

First, the temperature control means, which is the main part of the present invention, will be explained with reference to the block diagram shown in FIG. 1 and the flowchart shown in FIG. The cream temperature in the cylinder directly detected by the temperature detection means A and the appropriate cream temperature set by the appropriate temperature setting means B are compared and determined by the comparison means C, and if the cream temperature is outside the appropriate temperature range, cooling is performed. If the compressor is continuously operated using operating means D and the cream temperature is within the appropriate temperature range,
The operation of the compressor is stopped by the operation stop means E. Hereinafter, a concrete and detailed explanation will be given with reference to FIGS. 3, 4, and 5.

FIG. 3 is a sectional view of the main parts of the soft serve ice cream freezer, and the same parts as in FIG. 6 are given the same reference numerals. Reference numeral 12 denotes a temperature sensor, which is attached to the tip of the inner cylinder of the eccentric rod 3 in the cylinder 1, and is designed to directly detect the temperature of the cream 11. Reference numeral 13 denotes a detection signal extraction circuit, which is electrically connected to the temperature sensor 12.

Thus, when adding mix 9 to precooler 7,
The mix 9 passes through the carburetor tube 8 and flows into the cylinder 1. When the cooling operation starts, the stirrer motor 10 rotates, the stirrer 2 rotates, and the cream 11 and the like are gradually cooled by the cooler 4.
The cooling temperature of the cream 11 is directly detected by a temperature sensor 12 provided at the tip of the eccentric rod 3. When the cream 11 reaches an appropriate temperature, the detection signal is sent to the cooling control system via the detection signal extraction circuit 13, and the cooling operation is stopped.

FIG. 4 is a refrigerant system diagram. In the figure, numeral 14 is a compressor, 15 is a condenser fan motor, 1
6 is a condenser, 17 is a dryer, 18 and 19 are capillary tubes, 20 is a solenoid valve, 21 is a capillary tube, and 22 is an accumulator.

The refrigerant circulates in the direction of the → mark in the figure during cooling operation. That is, the high temperature gas refrigerant compressed by the compressor 14 is sent to the condenser 16, and is condensed by radiating heat by the condenser fan motor 15. The condensed refrigerant passes through the dryer 17 and is divided into the solenoid valve 20 side and the capillary tube 18 side. The refrigerant branched to the capillary tube 18 is depressurized by passing through the capillary tube 18 and becomes a gas-liquid mixed state, and after being evaporated in the precooler 7, it passes through the capillary tube 19. Further, the refrigerant branched to the electromagnetic valve 20 side is depressurized by passing through the capillary tube 21 and becomes a gas-liquid mixed state, and after being evaporated in the cooler 4, it joins with the refrigerant that has passed through the capillary tube 19. This combined evaporative refrigerant is sucked into the compressor 14 through the accumulator 22.

FIG. 5 is an electrical circuit diagram of the cooling control system. When the operation switch 23 is switched to automatic operation, the compressor 1
4. The stirrer motor 10 and the condenser fan motor 15 start operating, and if the temperature of the cream 11 is higher than the set temperature, a cooling operation is started. When the cream 11 is cooled and reaches an appropriate temperature, a signal from the temperature sensor 12 provided at the tip of the eccentric rod 3 is applied to the contact 12a via the detection signal extraction circuit 13, and the contact 12a is opened. Therefore, the cooling operation is stopped. The same heat leak operation will continue thereafter.

The device thus configured operates as follows. The pull-down and heat leak operations are almost the same as in the conventional example described above. That is, put a specified amount of mix 9 into the cylinder 1,
Attach the carburetor tube 8 and fill the precooler 7 with mix 9. When the operating switch 23 is switched to automatic operation in this state, the compressor 14, agitator motor 10, and fan motor 15 are operated.
The stirrer 2 rotates, mixes the mix 9, and begins cooling operation.

When the cooler 4 is cooled and the cream 11 etc. in the cylinder 1 are cooled to an appropriate temperature, the temperature is detected by the temperature sensor 1 at the tip of the eccentric rod 3 provided in the cylinder 1.
2, the detection signal is applied to the contact 12a via the detection signal extraction circuit 13, and this contact 1
Open 2a. Therefore, the cooling operation is stopped.

After that, when heat from the outside enters into the cylinder 1 and the temperature of the cream 11 etc. rises to near the upper limit, the temperature is detected by the temperature sensor 12, and a detection signal is sent to the contact 12a via the detection signal extraction circuit 13. and closes this contact. Therefore, cooling operation is restarted.

In this way, the temperature sensor 12 inside the cylinder 1 is
Since the temperature of the cream 11 inside the cylinder 1 is directly detected, the cooling operation continues until the cream 11 reaches the appropriate temperature without being affected by the ambient temperature.
The operation will stop as soon as the temperature reaches the appropriate temperature. Therefore, pull-down time is significantly shortened. Further, the cream 11 is always kept at an appropriate temperature by repeatedly operating and stopping the cooling system based on a signal from the temperature sensor 12 inside the cylinder 1. Therefore, it is possible to promptly supply soft serve ice cream and the like at a stable and appropriate temperature.

Note that the present invention is not limited to the embodiments described above, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[Effect of idea]

According to the present invention, the temperature of raw materials such as cream is directly detected by a temperature sensor installed at the tip of the inner cylinder of the eccentric rod in the cylinder, and the cooling system is operated or stopped based on the detected information. Since the system is equipped with a temperature control means that turns on and off the cooler, it is possible to pull down frozen desserts such as soft serve ice cream at the appropriate temperature within a short time without being affected by the ambient temperature. It is possible to provide a frozen dessert manufacturing device that can be quickly supplied.

[Brief explanation of the drawing]

1 to 5 are diagrams showing one embodiment of the present invention, in which FIG. 1 is a functional block diagram of the temperature control means, FIG. 2 is a flow chart showing the operation of the temperature control means, and FIG.
The figure is a cross-sectional view of the main parts of the soft serve ice cream freezer.
FIG. 4 is a refrigerant system diagram, and FIG. 5 is an electrical circuit diagram of the cooling control system. FIG. 6 is a sectional view of a conventional soft serve ice cream freezer. 1... Cylinder, 2... Stirrer, 3... Eccentric rod, 4... Cooler, 5... Thermostat, 6...
... Temperature sensing part, 7 ... Precooler, 8 ... Carburetor tube, 9 ... Mixture, 10 ... Stirrer motor, 11 ... Cream, 12 ... Temperature sensor,
12a... Contact, 13... Detection signal extraction circuit,
14... Compressor, 15... Condenser fan motor, 16... Condenser, 17... Dryer, 1
8, 19, 21... Capillary tube, 20...
...Solenoid valve, 22...Accumulator, 23...
Operation switch.

Claims (1)

[Scope of utility model registration request] A cylinder with a built-in stirrer and eccentric rod that stirs raw materials such as cream, a cooler installed around this cylinder, and by turning on and off this cooler, the raw materials inside the cylinder are kept at an appropriate temperature. and a control means for controlling the
A temperature sensor installed at the tip of the inner cylinder of the eccentric rod directly detects the temperature of the raw material such as cream,
A frozen dessert manufacturing apparatus characterized in that the apparatus is configured to turn on and off the cooler by operating and stopping a cooling system based on the detected information.