JPS5910776B2 - Soft cream making machine - Google Patents

Description

[Detailed description of the invention] The present invention supplies a mix stored in a mix tank provided inside the machine body into a freezing cylinder connected to a refrigerant system, and takes out the soft serve ice cream made in the cylinder by a takeout device. Regarding a soft serve ice cream making machine that is equipped with a water heater and configured to automatically supply hot water from the water heater to the mix tank for cleaning, there is no malfunction in particular and the hot water supply circuit is configured. To provide a soft serve ice cream making machine that reliably supplies hot water into the mix tank (・Provides a soft serve ice cream making machine that cleans the mix tank and freezing cylinder well.

Embodiments of the present invention will be described below based on the drawings.
The figure shows an internal configuration diagram of a soft-serve ice cream manufacturing machine equipped with the apparatus of the present invention.
The soft-serve ice cream manufacturing chamber 2 includes a mix tank 5, a freezing cylinder 6, a stirring device 8 that works in conjunction with a drive device 7 to stir and deliver the soft-serve ice cream produced in the freezing cylinder 6; A soft-serve ice cream take-out device 10 including a soft-serve ice cream take-out lever and drain lever 9, a refrigerant pipe 11 for cooling the mix in the mix tank 5 and the freezing cylinder 6, etc. are provided.

A two-pole single-throw switch (not shown) operated by the lever 9 is incorporated inside the take-out device 10.

One pole of the switch is normally open and the lever 9 is pulled forward (・
When the circuit is closed, the electric motor 1 described later which is the drive source of the drive device 7
2 is energized to rotate the stirring device 8 and the freezing cylinder 6
The soft serve ice cream inside is delivered from the sales port 13.

The other pole is normally closed and is configured to open when lever 9 is pulled forward.

The other one pole is related to the hot water supply circuit of the present invention.

Next, in the machine room 3 in the middle part, there is an electric compressor that forms a refrigerant circuit together with the mix tank and a refrigerant pipe 11 for cooling the freezing cylinder 6 on a partition plate 14 between the machine room 3 and the water heater room 4 in the lower part. 15, arrange the condenser 16 (・ru.

Further, 17 is a fan for cooling the condenser 16, and 12 is an electric motor that is a driving source for the driving device 7.

Further, the lower water heater chamber 4 is provided with a water heater 20 having a heating device such as a heater 18 and a thermostat 19 for controlling water temperature. A liquid level control device 23 consisting of a liquid level switch 22 that opens and closes contacts is connected to predetermined water level in the water heater 20 connected to the water source via an electromagnetic opening/closing pulp 24 controlled by the switch 22. It is configured to maintain the water level.

Further, 25 is a steam vent in the water heater 20, and 26 is a hot water pipe facing the mix tank 5. When cleaning after closing, the hot water in the water heater 20 is sucked and raised by a pump device 27, and mixed from the hot water pipe 26. It is constructed so that hot water can be automatically supplied into the freezing cylinder 6 via the tank 5 and further through the mix supply device 28.

The supplied hot water then adheres to the mix tank 5, mix supply device 28, and freezing cylinder 6, and the mix and soft serve ice cream are dissolved and washed.

The hot water after cleaning is drained by pulling the lever 9 forward, which brings the freezing cylinder 6 into communication with the outside.

Next, the electric circuit of the present invention will be explained based on FIG. The thermostat 19 and heater 20 are connected to the predetermined water level side contact 22a, and the electromagnetic switching pulp 24 is connected to the low water level side contact 22b.

Further, on the normally open contact 3ib side of the cleaning switch 31, there are a hot water supply command switch 32, a drain switch 33 described as the other one pole, a timer motor 35 having a timer switch 34, a hot water supply pump motor 36, and a water supply pump motor 36. The 11th and 4th relays 37.40 and the 2nd
The second and third relays 38 . 39 and the hot water supply circuit of the present invention constituted by the respective relay contacts and the like are connected.

The hot water supply circuit is connected to a first hot water supply command switch 321 and a first relay 3 via a normally open contact 3lb of the cleaning switch 31.
a normally open first relay contact 37 forming a self-holding circuit of 7;
11 parallel circuits and the normally open contact 3822 of the second relay 38
a, the timer contact 34A and the series circuit of the drain switch 33 are connected in series, and the normally open contact 3 of the second relay 38 is connected in series.
A third relay 39 is connected between 822b and the drain switch 33.

Is 3931 self-holding of the third relay 39? A normally open third relay contact forming a path.

Also, a normally open second relay contact 382 forming a self-holding circuit between the second hot water supply command switch 322 and the second relay 38;
The parallel circuit of the first relay 37, the normally closed contact 372a, the timer contact 34B, and the series circuit of the drain switch 33 are connected in series, and the normally open contact 37t2 of the first relay 37 is connected in series.
A fourth relay 40 is connected between b and the drain switch 33.

404 is a normally open fourth relay contact forming a self-holding circuit of the fourth relay 40.

Note that the first and second hot water supply command switches 321 and 32
2 is an interlocking automatic return type hot water supply command switch 32.

Further, through the normally open contact 3lb of the cleaning switch 31, another normally open relay contact 3713 and another normally closed third relay contact 3 are connected.
932 series circuit and another normally open second relay contact 3823
A parallel circuit with the series circuit of the other normally closed fourth relay contact 4042 is connected, and a parallel circuit of the timer motor 35 and the pump motor 36 is connected via the parallel circuit.
It's true.

As described above, the hot water supply circuit of the present invention is connected to the hot water supply circuit of the present invention.

Note that the refrigerant circuit (not shown) is configured so that when the cleaning switch 31 is switched to the normally open contact 3Ib side, that is, the hot water supply circuit is switched to the operable state, the refrigerant circuit (not shown) is turned off.

Further, FIG. 3 shows a time chart of the timer, and the timer cam 41 has a shape that switches between the timer contacts 34A and 34B in 30 seconds.

(As shown in FIG. 4.) Therefore, the pump capacity etc. are set so that a sufficient time for supplying hot water into the mix tank 5 and freezing cylinder 6 at one time is 30 seconds.

Furthermore, the water heater 20 stores enough hot water to complete two hot water supplies.

To explain the operation based on the above configuration and electric circuit, normally, when the cleaning switch 31 is located on the normally closed contact 31a side, the amount of water in the water heater 20 is
If the amount of water is less than the predetermined water level determined by
The electromagnetic on-off valve 24 is operated via the low water level side contact 22b of the liquid level switch 22, and the valve 24 is opened to open the water heater 2.
Supply water within 0.

When the amount of water reaches a predetermined amount, the float 21 switches the contact of the liquid level switch 22 to the predetermined water level side contact 22a, so the thermostat? Electricity is supplied to the heater 18 through the heater 18 to heat the water, and the thermostat 19 maintains the water at an appropriate temperature.

Therefore, when cleaning is performed after closing, the water in the water heater 20 is maintained at a suitable temperature.

When cleaning is to be performed, the contact of the cleaning switch 31 is switched to the normally open contact 3Ib side, and when the hot water supply command switch 32 is operated in this state, for example, the timer switch 34
is located on the A side (・, then the power supply 29 → cleaning switch 3
1 normally open contact 31b → first hot water supply command switch 32, → normally closed contact 3822a of second relay 38 → first relay 37 →
Since a closed circuit of timer contact 34A→drainage switch 33→power supply 30 is formed, the first relay 37 is energized and the normally open first relay contact 37, 1 is closed.
form a self-holding circuit.

In addition, since the other normally open first relay contacts 37 and 3 are closed, the timer motor 35 and the pump motor 36 are started, and the pump device 27 supplies hot water in the water heater 20 to the hot water pipe 26.
Then, hot water starts to be supplied into the freezing cylinder 6 via the mix tank 5 and the further mix supply device 28.

Furthermore, due to the excitation of the first relay 37, the normally closed contact 3712a of the relay 37 switches to the normally open contact 3712b side, energizing the fourth relay 40, which is self-held by the normally open fourth relay contact 4041, which is closed at this time. Ru.

Furthermore, at this time, the normally closed fourth relay contact 4042 is opened.

When the time chart progresses and 30 seconds have passed, the timer switch 34 switches from the A side to the B side, so the first relay 37
is cut off, the normally open first relay contact 371 is opened, releasing the self-holding of the first relay 37, and the other normally open first relay contact 3713 is also opened.
The contact is a normally open contact 37, and a normal normally closed contact 37 from the 2b side.
Return to x2a side.

The hot water supply is completed by the above operation, but in such a state, the hot water supply command switch 32 is operated and the second relay 38 is activated.
Even if the electricity is turned on, do not open the drain switch 33 by pulling the lever 9 of the take-out device 10 forward (as long as the fourth
The excitation of the relay 40 is not cut off, and the fourth relay contact 4 is normally closed.
04 is in an open state, so the timer motor 35 and pump motor 36 are not energized.

Therefore, there is no possibility of hot water overflowing from the mix tank 5 due to continuous hot water supply (・).

On the other hand, at this time, the second relay 38 and the third relay? 9 is energized, but this is not a problem as it is canceled by opening the drain switch 33 and returns to normal.

The above explanation of the operation allows the hot water supply operation to be completed reliably.

The supplied hot water dissolves and cleans the mix and soft serve ice cream adhering to the mix tank 5, mix supply device 28, and freezing cylinder 6.

After a certain amount of time has elapsed, if the lever 9 of the take-out device 10 is pulled forward, the water will be drained to the outside through the outlet 13.

By pulling the lever 9 to drain the water, all the circuits except the drain switch 33 are reset, and by returning the lever 9 to normal operation, the second hot water supply becomes possible.

In the present invention, the reason why the capacity of the water heater 20 is set to store enough hot water for two hot water supplies is that during one hot water supply, the mix and soft-serve ice cream that have adhered to the mix tank 5, freezing cylinder 6, etc. The effect of completely dissolving and cleaning is weak, so hot water is supplied twice, and after the first drain, the second
This was taken into consideration so that hot water could be supplied for the second time.

Moreover, even if the hot water supply command switch 32 is operated after the first hot water supply is completed, the system prevents hot water from being supplied continuously.

Next, to explain the second hot water supply operation, take out the hot water in the mix tank 5 and freezing cylinder 6, which have been dissolved and cleaned to some extent by the first hot water supply, by pulling the lever 9 of the device 10 (by pulling the lever 9 of the device 10). Drain water, lever 9
When the water heater returns to normal, the hot water supply circuit goes into a reset state.

Also, at this time, the sales port 13 is closed and the refrigeration cylinder 6
and the outside is cut off.

If you operate the hot water supply command switch 32 in this state, the timer switch 34 will switch to A for the first hot water supply.
For the second hot water supply, it is located on the B side.

Therefore, the power supply 29 → the normally open contact 31 of the cleaning switch 31
b → second hot water supply command switch 32 → normally closed contact 3 of first relay 37 712a → second relay 38 → timer contact 34
Since a closed circuit of B→drainage switch 33→power supply 30 is formed, the second relay 38 is energized and the normally open second relay contact 382 is closed to form a self-holding circuit of the second relay 38. .

In addition, since the other normally open second relay contact 3823 is closed, the timer motor 35 and pump motor 36 are started, and the pump device 27 pumps hot water in the water heater 20 from the hot water supply pipe 26 to the mix tank 5 and then to the water supply pipe 26. The supply of hot water into the refrigeration cylinder 6 via the hot water supply device 28 is started.

In addition, when the second relay 38 is energized, the normally closed contact 3822a of the relay 38 is switched to the normally open contact 382b, and the third relay 39 is energized, and at this time, the third relay 39 is energized via the normally open third relay contact 393, which is closed. Self-maintained.

Furthermore, at this time, the normally closed third relay contact 3932 is opened.

When the time chart advances and 30 seconds have passed, that is, at the position where the elapsed time from the first time is 60 seconds, the timer contact 34 turns to B.
Since the switch is from the side to the A side, the second relay 38 is de-energized, the normally open second relay contact 381 is opened, and the self-holding of the second relay 38 is released, and the other normally open second relay The contact 383 is also opened, and the contact of the second relay 38 returns from the normally open contact 3822b side to the normal normally closed contact 382a side.

The above operation completes the second hot water supply, but if the second hot water supply is not performed when the hot water supply command switch 32 is operated at the end of the first hot water supply as described above (see below for prevention measures). However, this happens after the second hot water supply (
This is done in the same way.

In this case, even if you operate the hot water supply command switch 32 to energize the first relay 37, do not open the drain switch 33 by pulling the lever 9 of the take-out device 10. No dripping, normally closed third relay contact 39
3 is in an open state, so the timer motor 35 and pump motor 36 are not energized (.

Therefore, hot water will not be supplied continuously (・.

Drainage work will be carried out in the same manner as the first time.

The mix tank 5, mix supply device 28, and freezing cylinder 6 are cleaned thoroughly by the second hot water supply, melting/cleaning, and drainage, and are ready for sale the next day.

Furthermore, the wall temperature of the mix tank 5 and freezing cylinder 6 is increased by the first hot water supply (・), so the second hot water supply increases the cleaning effect and the sterilization effect (
・It is something.

After all the work has been completed as described above, if the cleaning switch 31 is switched from the normally open contact 3Ib side to the normally closed contact 31a side, water will be supplied to the water heater 20 again, and when the predetermined amount of water is reached, the heater 18 will be supplied with water. When the next day's store is closed for cleaning, hot water supply operation can be immediately started and cleaning can be carried out.

Furthermore, according to the present invention, when starting the first hot water supply, the timer switch 34 starts from the A side (but the timer switch 34 is configured to switch every 30 seconds to complete one hot water supply, As is clear from the detailed configuration of the hot water supply circuit, it is possible to start from the gap between the first hot water supply circuit and the second hot water supply circuit.

As described above, the present invention has the advantage that even if the hot water supply command switch is operated with the outlet open (-), the drain switch is opened and the
・This prevents malfunctions when supplying hot water, and the outlet is closed when the temperature rises.
・Only when the hot water supply command switch is operated, the hot water in the water heater can be supplied to the mix tank and further to the freezing cylinder, filling the mix tank and freezing cylinder with hot water. Refrigeration cylinders can be dissolved and cleaned well.

Furthermore, since the drain switch forms a circuit that energizes the drive motor that rotates the stirring device when the outlet is opened by the dispensing device, it also has the advantage that it can also be used for the soft-serve ice cream delivery operation. .

[Brief explanation of drawings]

Fig. 1 is an internal configuration diagram of a soft serve ice cream making machine having a device of the present invention, Fig. 2 is an electric circuit diagram of the present invention, Fig. 3 is a time chart of timer contacts, and Fig. 4 is a configuration diagram of a timer cam. . 10... Soft serve ice cream removal device, 13...
Sales port, 32...Hot water supply command switch, 33...Drainage switch, 36...Pump motor. 81

Claims (1)

[Claims] 1. A soft-serve ice cream manufacturing machine equipped with a water heater and configured to automatically supply hot water into a mix tank. , has a pump motor for hot water supply, and when the outlet is opened by the take-out device, the drain switch connects a circuit that energizes the drive motor of the stirring device that rotates to dispense the soft serve ice cream in the cylinder. When the hot water supply command switch is closed, the pump motor is energized to supply hot water from the water heater to the mix tank only in the state of the drain switch when the outlet is closed by the take-out device and the temperature is ℃. A soft serve ice cream making machine characterized by forming a hot water supply circuit.