JPS5933333B2 - Manufacturing equipment for soft cream, etc. - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a soft serve ice cream freezer, a shake freezer,
A manufacturing device for soft-serve ice cream, etc. that stirs soft-serve ice cream, etc. or its raw materials with an agitator in a cylindrical cylinder that is cooled by a cooler, such as a frozen carbonated beverage machine, etc. It is related to.

An example of a conventional device will be explained with reference to FIGS. 1 and 2.

1 is a cylinder for manufacturing soft serve ice cream, etc., 2 is an agitator for stirring soft serve serve, 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 serve from cylinder 1, and 5 is a lid for taking out soft serve serve etc. Pressed downward by spring 7,
A plunger that opens the outlet 4a of the lid 4 when lever 6 is raised; 8 is a pre-cooler that stores and cools liquid raw materials such as soft cream; 9 supplies liquid raw materials from the pre-cooler 8 into the cylinder 1; and a carburetor tube for keeping the height of the soft cream etc. in the cylinder 1 to the lower end, 10 a pulley fixed to the shaft 2f, 11 a stirring electric motor, 12
13 is a pulley fixed to the output shaft of the stirring electric motor 11;
14 is a V-belt for transmitting rotation, 14 is a thermostat with a temperature sensing part 14a fixed to the outer surface of the cooler 3, 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 A refrigerant compressor, 17 a refrigerant discharge pipe, 18 a refrigerant condenser, 19 a condenser fan, 20 a solenoid valve that is normally closed and opens when energized, and 21 a precooler connected from the condenser 18 to the precooler 8. 2 is a capillary tube that connects the cooling pipe 22; 23 is a capillary tube that connects the solenoid valve 20 to the cooler 3; 24 is a suction tube that connects the cooler 3 and the compressor 16;
5 is a capillary tube connecting the precooling pipe 22 and the suction pipe 24.

The stirrer 2 includes a shaft 2f, a back plate 2e integral with the shaft 2f,
A rigid shaft 2d and a blade 2 are integral with the back plate 2e.
The blade 2a, the helix 2b, the rigid shaft 2
d, and a feeding propeller 2C, which is integral with each other.

Note that the shaft 2f is rotatably held by the bearing portion 1a of the cylinder 1.

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.

Reference numeral 28 denotes an operation switch, which includes a contact 28a for a stop position, a contact 28b for automatic operation, and a contact 28C for stirring.

29 is a compressor relay, 29a529b29G, 29
d is its normally open contact, 30 is a relay for the stirring motor, and 30a, 30b, and 30C are its normally open contacts.

R,s;T indicates a three-phase power line.

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 carburetor tube 9, and when it reaches the lower end of the carburetor tube 9, the flow stops and a certain amount of fluid flows inside the cylinder 1. kept at a height.

When the operation switch 28 is switched from the stop position contact 28a to the automatic operation contact 28b, the thermostat 14 switches the liquid raw material 2
6 is closed due to the temperature of 4°C to 10°C, the condenser fan 19 rotates, the compressor relay 29 is energized, and the contacts 29a j 29b j 29C and 29d change from open to closed to compress. machine 16 operates, relay 3
0 is excited and the contact 30a > 30b) 30
c changes from open to closed, the stirring electric motor 11 rotates, and the solenoid valve 20 opens.

The refrigerant compressed by the compressor 16 passes through the refrigerant discharge pipe 17, becomes condensed in the condenser 18, becomes liquid, passes through the solenoid valve 20, is depressurized in the capillary tube 23, flows into the cooler 3, evaporates, and becomes the liquid raw material 27. Cool and inlet pipe 2
4 and returns to the compressor 16.

A part of the refrigerant passes through the capillary tube 21 and is depressurized.
It evaporates in the pre-cooling pipe 22, cools the liquid raw material 26, and returns to the suction pipe 24 through the capillary tube 25.

The liquid raw material 27 is at an appropriate temperature for soft serve ice cream, etc. (-6°C to -8°C).
°C), it is detected by the temperature sensing part 14a of the thermostat 14, the thermostat 14 changes from closed to open to stop the condenser fan 19, and the relay 29 demagnetizes and closes the contact 29a.
, 29b, 29C, and 29d open from closed to stop compressor 16, and relay 30 demagnetizes contacts 30at30b.
, 30c are opened from closed to stop the stirring electric motor 11, demagnetize the solenoid valve 20, and close the refrigerant passage.

Even if the compressor 16 stops, the refrigerant in the condenser 18 flows through the capillary tube 21 to the precooling pipe 22, and the precooler 8
The liquid raw material 26 is cooled and maintained at 4°C to 10°C.

After that, when the temperature of the soft-serve ice cream etc. 27 rises due to the heat entering the cylinder 1, the thermostat 14 opens and closes, operating the compressor 16, stirring electric motor 11, and condenser fan 19, and solenoid valve 20 is excited to cool the soft cream etc. 27.

When taking out the soft serve ice cream or the like 27, when the lever 6 is raised, the plunger 5 rises, opens the takeout port 4a, and the upper end of the plunger 5 pushes the cup switch 15, causing its contact to change from open to closed.

At this time, the compressor 16 is operating, and the stirring electric motor 11
If the is rotating, the agitator 2 rotates, the soft cream etc. 27 is sent out from the outlet 4a, and the liquid raw material 26 of the precooler 8 is refilled with the sent out soft cream etc. 27 and flows into the carburetor tube 9. It flows into the cylinder 1 from there.

On the other hand, when the compressor 16 is not operating, the relay 30
is excited, the stirring electric motor 11 rotates and the soft serve ice cream etc. 27 is sent out from the outlet 4a.

When the lever 6 is lowered, the plunger 5 is lowered, the outlet 4a is closed, and the contact of the cup switch 15 is changed from closed to open.

Above, we have explained the case where the operation switch 28 is located at the automatic operation contact 28b, but we will explain the case where it is switched to the stirring contact 28C. At this time, only the relay 30 is energized, so only the stirring electric motor 11 rotates, and the lever 6 When raised, the plunger 5 rises and the soft serve ice cream etc. 27 can be taken out.

This stirring contact 28G is not cooled, for example,
It is used when it is desired to take out most of the soft cream etc. 27 and the liquid raw material 26 when cleaning the equipment.

However, in the conventional apparatus described above, the rotational speed of the stirrer was constant both when cooling the liquid raw material to a temperature suitable for soft cream etc. and when taking out the soft cream etc. from the outlet.

The stirrer mixes the liquid raw material or soft serve ice cream, etc. in the cylinder with the air in the cylinder, and cools it to the outlet while incorporating an appropriate amount of air bubbles and preventing it from freezing on the inner wall of the cylinder during cooling. As is well known, the foam of cream gradually becomes better as it is stirred, but if the stirring is done too strongly and for a long time, the air bubbles will disappear and the foam will become even more sticky. The cream feels stiff and a so-called "sagging" phenomenon can be seen.

On the other hand, if the cream can be taken out in a short time, the product can be sold without making customers wait, so it is desirable that the agitator rotates at a relatively high speed.

[We would like to minimize the settling J and also speed up the take-out of soft-serve ice cream, etc., but since the rotating speed of the agitator is constant and take-out speed is important, the compressor is not used while waiting for sales.] The compressor runs and stops repeatedly, and at the same time as the compressor runs, the agitator also rotates at a relatively high speed required for take-out, so in places where sales are relatively slow, soft serve ice cream and the like tend to run dry.

In addition, in order to prevent the above-mentioned "stagnation", even if the rotation speed of the agitator that rotates at the same time as the compressor is high, by using a compressor with a large cooling capacity or a structure with good insulation. By shortening the rotation time,
Efforts have been made to prevent ``sagging,'' but they are expensive and difficult to make compact.

The present invention has been proposed in view of the above-mentioned points, and is an apparatus for manufacturing soft-serve ice cream etc. by stirring soft-serve ice cream etc. or its raw materials with an agitator in a cylindrical cylinder cooled by a cooler. The device's drive device is a variable speed drive device, and the same speed conversion type drive device is controlled to be driven in a high speed range when taking out soft serve ice cream, etc., and in a low speed range when driving the agitator in the sales standby state. It is characterized by having a mechanism, and its purpose is to provide a compact manufacturing device for soft-serve ice cream, etc., which can prevent the cream from "settling" and speed up the removal of the cream. It is something.

Since the present invention is configured as described above, even if the agitator is repeatedly operated and stopped for a long period of time in the sales standby state, the speed converting type drive device is driven in a low speed range, so that the cream does not reach 1. This eliminates the phenomenon of "dipping" and when taking out soft-serve ice cream, etc., the speed converting drive device is driven at a high speed range, so the soft-serve ice cream, etc. can be taken out quickly and sold without making customers wait. I can do it.

Furthermore, it is not necessary to use a compressor with a large cooling capacity or to have a structure with good heat insulation, so it can be made compact.

Hereinafter, one embodiment of the present invention will be described based on FIG. 3.

This embodiment is the same as the conventional one described above except for the stirring electric motor and control circuit described below.

The electric motor for stirring has 4 poles (50/60Hzl 500
/18・00rpm) or 8 poles (50/60Hz75
A pole number changing type motor 40 having a built-in pole number changing circuit (0/900 rpm) is used.
A pulley 12 is fixed to the output shaft of the stirrer 2 as shown in FIG. Stirrer 2 is set at 250 to 300 rpm at high speed and 125 rpm at low speed.
Rotates at 150 rpm.

On the other hand, the control circuit is connected to the automatic operation contact 2 of the operation switch 28.
8b, a high-speed selection relay 4 is connected in series with a cup switch 15 whose contact closes when taking out soft serve ice cream, etc.
1 and 42 are connected, and the stirring contact 28C of the operation switch 28 and the normally open contact 29 of the compressor relay 29 are connected.
A low speed selection relay 43 is connected in series with d.

Then, the pole number conversion type electric motor 40 and the three-phase power supply lines R, S
.

A normally open contact 41a) of the high-speed selection relay 41 between
41b? 4IC and normally closed contact 41d.

41e, 41f, normally open contact 4 of high-speed selection relay 42
2a, 42b, 42c and a normally closed contact 42d.

42e, 42f, and normally open contacts 43a, 43b, t43c of the low speed selection relay 43 are connected as shown in the figure, so that the circuit can be switched between a 4-pole circuit and an 8-pole circuit.

Next, the effect will be explained.

When the liquid raw material 26 is introduced from the precooler 8, it flows into the cylinder 1 through the capuleta tube 9, and when it reaches the lower end of the capleta tube 9, the flow stops and is maintained at a constant height within the cylinder 1.

(1) During pulldown (cooling and manufacturing of liquid raw okara soft serve ice cream, etc.)

) When the operation switch 28 is switched from the stop position 28a to the automatic operation contact 28b, the thermostat 14 switches the liquid raw material 27
Since the temperature is between 4°C and 10°C, the contacts are closed, so the condenser fan 19 rotates, the compressor relay 29 is energized, and the contacts 29a, 29b, 29c, and 29d change from open to closed. When the compressor 16 operates, the low speed selection relay 43 is energized and the contact 43a is activated.

43b and 43C change from open to closed, the pole change type electric motor 40 rotates, and the solenoid valve 20 opens.

The pole number changing type rolling machine 40 has a contact point 43a. 43b > 43
When C is closed, the 8-pole circuit is selected, so low speed rotation is performed.

The refrigerant compressed by the compressor 16 passes through the refrigerant discharge pipe 17 and is condensed in the condenser 18 to become liquid, and the solenoid valve 2
0, the pressure is reduced by the keyed pillar tube 23, the liquid material 27 is evaporated by flowing into the cooler 3, and the liquid material 27 is cooled.
and returns to the compressor 16.

A part of the refrigerant passes through the capillary tube 21 , is depressurized, evaporates in the precooling pipe 22 , cools the liquid raw material 26 , and returns to the suction pipe 24 through the capillary tube 25 .

When the liquid raw material 27 reaches the appropriate temperature (-6°C to -8°C) for soft-serve ice cream etc. 21 in the cylinder 1, it is detected by the temperature sensing part 14a of the thermostat 14, and the thermostat 14 changes from closed to open, and the condenser blower fan 19 is turned on. The relay 29 demagnetizes and the contacts 29a>29b>29c and 29d change from closed to open, stopping the compressor 16 and the relay 43 demagnetizes the contacts 43a, 43b.

43c is opened from closed to stop the electric motor 40, demagnetize the solenoid valve 20, and close the refrigerant passage.

Even if the compressor 16 stops, the refrigerant in the condenser 18 flows through the capillary tube 21 to the precooling pipe 22 and cools the liquid raw material 26 in the precooler 8, so that the liquid raw material 26 has a temperature of 4°C to 10°C.
It is kept cold at ℃.

(2) In the event of a heat leak (keep soft serve ice cream, etc., within the appropriate temperature range).

) After the soft serve ice cream 27 is made, the temperature of the soft serve increases due to the heat entering the cylinder 1, and when it exceeds the appropriate temperature (-6°C) for the soft serve, the thermostat 14 changes from open to closed and compresses. The motor 16 and the condenser fan 19 are operated, the pole change type electric motor 40 rotates at low speed, and the solenoid valve 20 is excited to cool the soft-serve ice cream etc. C)
- When it cools down to t, the thermostat 14 changes from closed to open and operation stops.

By repeatedly starting and stopping the machine in this way, the soft serve ice cream etc. can be kept at an appropriate temperature.

(3) When taking out soft serve ice cream etc. When taking out soft serve serve etc., the compressor 16 and the pole change type electric motor 40 are operated and when they are not operated.

(a) When the compressor 16 and the pole number changing type electric motor 40 are operating, in this case, the pole number changing type electric motor 40 is rotating at a low speed, but when the lever 6 is raised, the plunger 5 rises and the outlet is opened. 4a is opened, the upper end of the plunger 5 pushes the cup switch 15, and the contact changes from open to closed.

At this time, the high-speed selection relays 41 and 42 are energized at the same time, and the contacts 41a, 41b, and 41C change from open to close, and at the same time, the contacts 41d and 41e.

41f cuts off the 8-pole circuit, that is, the low-speed circuit, of the pole change type electric motor 40 excited by the contacts 43a, 43b, and 43c,
On the other hand, contacts 42a and 42b.

42C changes from open to closed at the same time as contact 42d.

42e and 42f also have contacts 43a and 43b.

Cut off the low speed circuit energized by 43c.

Contacts 41a, 41b, 41c and 42a, 42b.

43G selects the 4-pole circuit of the pole number conversion type electric motor 40, so that high-speed rotation is performed.

When the pole number change type electric motor 40 rotates at high speed, the stirrer 2 also rotates at high speed, so that the soft cream etc. 27 can be quickly taken out from the outlet 4a.

The stirrer 2 rotates at 250 to 300 rpm, and in this case, the take-out time is 5 to 3 seconds, and one cup of 100 g can be taken out.

When the lever 6 is lowered, the plunger 5 descends and closes the outlet 4a, and the cup switch 15 changes from closed to open to demagnetize relays 41 and 42, contacts 41a, 41b, and 41c change from closed to open, and at the same time contacts 41 d and 41 e, 41f changes from open to closed.

On the other hand, the contacts 42a, 42b t 42c change from closed to open, and the contacts 42d, 42e y 42f change from open to closed, so the 4-pole circuit, that is, the high-speed circuit, of the pole change type electric motor 40 is cut off, and the 8-pole circuit changes again. Return to low speed rotation.

(b) When the compressor 16 and the pole change type electric motor 40 are stopped. In this case, when the lever 6 is raised, the plunger 5 rises and opens the outlet 4a, and the upper end of the plunger 5 pushes the cup switch 15. The contact changes from open to closed, the high-speed selection relays 41 and 42 are energized at the same time, and the pole change type electric motor 40 rotates at high speed as described above, causing the stirrer 2 to rotate at high speed and taking out the soft serve ice cream, etc. 27 from the outlet 4a. It can be taken out.

When the lever 6 is lowered, the plunger 5 descends to close the outlet 4a, the cup switch 15 changes from closed to open, the relays 41 and 42 are demagnetized, and the pole change type electric motor 40 is stopped.

Above, we have explained the case where the operation switch 28 is at the automatic operation contact 28b, but we will explain the case where it is switched to the stirring contact 28c. At this time, the low speed selection relay 43 is energized, so only the pole number changeable motor 40 is at low speed. Make a rotation.

When the lever 6 is raised, the plunger 5 goes up and the soft serve ice cream or the like 27 can be taken out.

The stirring contact 28c does not perform cooling, for example when cleaning the device, etc.
6 is mostly used when you want to take out the throat.

As is clear from the above explanation, according to the above embodiment, (1) In the pull-down or heat leak operation in which the compressor is in cooling operation and the agitator rotates when soft-serve ice cream etc. is on standby, the rotation of the agitator is relatively reduced. By keeping the speed low, the agitator rotates at a relatively high speed to prevent the soft-serve ice cream from sagging and maintain its quality for a long time.
The time required to take out the soft serve ice cream etc. is shortened and a large amount of the soft serve ice cream etc. can be sold in a fixed time. (3) When the soft serve ice cream etc. is waiting for sale, the rotation of the agitator is kept at a low speed, so noise is reduced.

(4) Since the capacity of the compressor can be made relatively small, and the insulation structure can be simplified, there are many advantages such as making it an economical and compact device.

In the above embodiment, an example was explained in which a pole-converting motor was used as the stirring motor, but an electronically controlled speed converting motor, a speed converting device combined with a clutch mechanism, etc. may also be used.

Further, the speed setting does not need to be fixed at two speeds, low speed and high speed, and the ratio of low speed and high speed may be changed to 1=2.degree. 1:3 or steplessly.

[Brief explanation of drawings]

FIG. 1 is a partial cross-sectional schematic diagram showing an apparatus for manufacturing soft-serve ice cream, etc., FIG. 2 is a control circuit diagram of a conventional device, and FIG. 3 is a control circuit diagram showing an embodiment of the present invention. 1: Cylindrical cylinder, 2: Stirrer, 26: Liquid raw material, 2
7: Soft serve ice cream, etc., 40: Pole change type electric motor for stirring part movement, 41, 42: Relay for high speed selection, 41a, 4
1b, 41c: normally open contacts of relay 41, 41d, 41
e, 41f: normally closed contact of relay 41, 42a, 42b
, 43c: normally open contact of relay 42, 42 d t 4
2 e, 42 f: Normally closed contact of relay 42, 43:
Low speed selection relay, 43 a y 43 b, 43
c: Normally open contact of relay 43.

Claims (1)

[Scope of Claims] 1. In an apparatus for manufacturing soft-serve ice cream, etc. or its raw materials by stirring it with an agitator in a cylindrical cylinder cooled by a cooler, the drive device of the agitator is speed-converted. In addition to the mold drive device, the same speed conversion type drive device is used in the high speed range when taking out soft serve ice cream, etc.
A control mechanism that drives the stirrer in a low speed range when it is in the sales standby state. A manufacturing device for soft-serve ice cream, etc., characterized by being provided with.