JPS61162139A - Ice cream freezer - Google Patents

Abstract

PURPOSE:To prevent the supercooling of ice cream mix, by setting a mix quantity detector to start the count of the number of delivered ice cream when the quantity of mix in the mix tank is decreased to a prescribed level, and stopping the operation of the freezing system when the counted number reaches a prescribed level. CONSTITUTION:The ice cream mix stored in a mix tank is supplied properly to the freezing cylinder connected to a freezing system, and the ice cream such as soft ice cream prepared in the freezing cylinder is delivered from the apparatus. The mix quantity detector 3 is set to detect the decrease of the mix quantity in the mix tank to a prescribed level. When the decrease of the mix quantity is detected by the detector 3, the number of delivered ice cream is counted by the counter 17, and the operation of the freezing system is stopped by the protective circuit 23 when the counter 17 reaches the state of count-up. The supercooling in the freezing cylinder and the ice cream in the freezing cylinder can be prevented, and the preparation of ice cream can be started quickly after the supply of the mix to the mix tank.

Description

Detailed Description of the Invention B) Industrial Application Field The present invention relates to a frozen dessert in which a mix in a mix tank is appropriately supplied into a freezing cylinder connected to a freezing system, and the frozen dessert produced in the freezing cylinder is served. Regarding manufacturing equipment.

(b) Conventional technology For example, Japanese Utility Model Publication No. 58-37273 discloses a temperature sensing device for detecting the supercooled state of soft serve ice cream.
The mix in the freezing cylinder becomes insufficient, and the freezing load, ie, the amount of soft-serve ice cream, decreases, so the temperature of the soft-serve ice cream decreases and the evaporation pressure decreases. Then, the evaporation temperature rapidly decreases, and the temperature sensing device detects a predetermined decrease in the evaporation temperature and operates, and the cooling operation is stopped. heat up.

(c) Problems to be solved by the invention In spite of the above-mentioned conventional technology, when the soft-serve ice cream is sold even after the mix in the freezing cylinder becomes insufficient, and the amount of soft-serve ice cream in the freezing cylinder decreases, The cooling operation lowers the temperature of the frozen cylinder and the soft serve ice cream, and the temperature sensing device operates before stopping the cooling operation, so the stopping of the cooling operation is delayed and supercooling occurs in the frozen cylinder and the soft serve ice cream. This overcooling causes an overload on the electric motor that drives the stirring device inside the freezing cylinder, causing a malfunction, and it is also necessary to heat the freezing cylinder in order to return the soft serve ice cream to its normal product state. However, the problem arises that it takes time to supply the soft-serve ice cream, which delays sales. The present invention aims to solve the above problems.

B) Means for solving the problem The present invention supplies the mix stored in the mix tank appropriately into a freezing cylinder connected to a freezing system, and the frozen desserts such as soft serve ice cream produced in the freezing cylinder are delivered to the outside. The frozen dessert manufacturing apparatus includes a mix amount detector that detects when the mix amount in the mix tank has decreased to a predetermined amount, and a mix amount detector that detects a decrease in the mix amount and then removes the frozen dessert. The above-mentioned problem is solved by a frozen dessert manufacturing apparatus that is equipped with a counter that counts the number of units sold, and a protection circuit that stops the operation of the refrigeration system when the counter counts up.

(E) Function When the mix amount in the mix tank of the frozen dessert production device decreases to a predetermined amount, the mix amount detector detects this decrease in mix amount and operates, and the counter thereafter counts the number of sold frozen fruits. However, when the count reaches a predetermined number of times and counts up, the protection circuit is activated to stop the cooling operation of the refrigeration cylinder.

(f) Example Hereinafter, a frozen dessert manufacturing apparatus shown as an example of the present invention will be explained in detail based on FIGS. 1 and 2.

(1) in Figure 2 is a mix tank that stores the so-called mix that is the raw material for frozen desserts such as shakes and soft serve ice cream;
(2) is a freezing cylinder which is a chamber for producing frozen desserts, and the mix tank (1) has a pair of electrodes (3A) which are the detection part of a mix amount detector (described later) that detects a decrease in the amount of mix. It is provided. Also, refrigeration cylinder (
2) is wrapped with a cylinder cooling pipe (hereinafter referred to as cooling pipe 5) [7], which is an evaporation pipe, through the refrigeration system's electric compressor (4), condenser (5), and pressure reducing device (6). There is.

(8) is a temperature-sensing device, and the temperature-sensing part (8) of this temperature-sensing device (8)
A) - Cooling pipe (7) so as not to be affected by temperature
Remove the frozen dessert from the freezing cylinder (2) and check the condition (temperature) of the frozen dessert.
is arranged to detect at a temperature of (9) is a stirring device, and α is a driving electric motor (hereinafter referred to as motor) of this stirring device.The stirring device (9) appropriately stirs the mix cooled in the freezing cylinder (2) and supplies the product. In some cases, it acts as a delivery mechanism. Furthermore, (lυ) is a frozen dessert removal device attached to the front part of the freezing cylinder (2), and this frozen dessert removal device (11) is equipped with a plunger (1) that allows the supply port to be in direct communication with and cut off from the inside of the freezing cylinder (2). 1
3A) and an automatic return type supply switch (S) that operates this plunger.

Next, the electric circuit of the present invention will be explained. (l) in Figure 1
cJ is an oscillator, (3) is a mix amount detector, aη is a counter, and the mix amount detector (3) is composed of a detection section (3A) and a detection circuit (3B). Furthermore, the output terminals of the oscillator a9 and the mix amount detector (3) are connected to each other, and the output terminal of the mix amount detector (3) is further connected to the reset terminal of the counter αη via the inverter circuit al. . In addition, the supply switch (81 is the counter a
t> clock terminal and the motor control circuit (to). (2υ is an OR circuit, @ is a notification circuit, (to) is a protection circuit, and each input terminal of the OR circuit (23) is connected to each output terminal of the AND circuit (II and counter αη). The notification circuit @ consists of a fourth transistor □□□ of NPN type whose base Km is connected to the output terminal of the OR circuit 01) via a resistor (R1), and this first transistor (c).
An annunciator (which is a light emitting diode connected to the collector of
), and a resistor (R1), and the protection circuit @ is the OR circuit 01
) is connected to the output terminal of the resistor (R3) and the capacitor (
It is equipped with a 0% NPN type second transistor (5), a relay coil (RC) of a protection relay that is energized when the second transistor (5) is turned on, and resistors (R4) and (R1). Also, ■ is the compressor operating circuit, C31 is the AC power supply, and (8S) is the temperature sensing device (8) km W j
4/R6N +671J
Fugitive II 17 ff) 1fi# - angle φ.

The first relay switch (4) is an electric compressor, and each is connected in an annular manner. Also, between the supply switch (S) and the clock terminal of the counter αD and the motor control circuit ■, there is a normally closed second relay switch (R8y) of the protective relay.
) is provided.

Hereinafter, the operation of the present invention will be explained based on the above configuration and electric circuit. First, the mix is in the frozen cylinder (2)
The case where the mix tank (1) is fully filled with mix and the mix is sufficiently stored in the mix tank (1) will be explained. Electrode (3A
) is below the surface of the mix, the detection circuit (3B) of the mix amount detector (3) outputs a low level signal, and one input terminal of the AND circuit receives this low level signal. The AND circuit outputs a low level signal to the OR circuit 121). Further, the inverter 2 circuit receives a low level signal from the detection circuit (3B) and outputs a high level signal. And the counter (
The reset terminal of 17) inputs this high level signal,
Even when the clock terminal inputs a high level signal by turning on the sales switch (S), the counter αD does not count and continues to output a low level signal. Therefore, each input terminal of the OR circuit (2]) inputs a low level signal and outputs a low level signal, and the first, W! ! The J2 transistor (to) continues to be off, the alarm (a) is de-energized and does not emit light, and the relay coil (RC) is also de-energized, so the relay switch (R8) is on. At this time, the changeover switch (8S) is also on, and the refrigerant is transferred as shown in Figure 2 by the operation of the electric compressor (4) -> electric compressor (4) -> condenser (5) -> pressure reducing device (6) -> The cooling pipes (7) are sequentially circulated. When the temperature of the cooling cylinder (2) drops to a predetermined temperature due to heat exchange in the cylinder cooling pipe (7), the temperature sensor (8A) detects this temperature and the °C changeover switch (8S) turns off. , the operation of the electric compressor (4) is stopped, refrigerant no longer flows through the cooling pipe (7), and the temperature of the refrigeration cylinder (2) gradually rises. When the temperature sensor (8A) detects that the temperature has risen to a predetermined level, the changeover switch (8S) is turned on and the electric compressor (4) starts operating.

Thereafter, the temperature of the freezing cylinder (2) is changed by turning on and off the changeover switch (8S) as the temperature rises and falls.
) The temperature of the frozen dessert in ) is kept approximately constant.

While the frozen dessert manufacturing apparatus is operating as described above, when the supply switch +81 is turned on, the counter (
Although a high level signal is given to the clock terminal of 17), the counter (I7) does not count, and the motor control circuit inputs a high level signal and operates for a predetermined period of time, e.g.
The motor a1 is operated for 0 seconds, and a predetermined amount of frozen fruit is supplied from the frozen dessert removal device Ql) to the external cup (CP) by rotation of the stirring device (9).

Thereafter, the mix in the mix tank (1) is transferred to the freezing cylinder (2) and gradually reduced every time the chilled fruits are externally supplied. Then, when the liquid level of the mix falls to (4) in FIG. 2 and the electrode (3A) in the mix tank (1) comes out of the liquid level of the mix, the detection circuit (3B) outputs a high level signal. This high level signal is applied to one input terminal of the AND circuit Ql, and the AND circuit (Is) outputs a high level signal to the OR circuit (21) in synchronization with the oscillation circuit a9.

Also, the reset terminal of the counter αη is connected to the inverter circuit a9.
The number of sold frozen desserts is counted by inputting a low level signal through the OR circuit, but a low level signal is continuously output to the OR circuit. OR circuit■1) is the generator a1
A level signal of 1 is output at predetermined intervals in synchronization with the alarm, and the first transistor (to) is turned on at predetermined intervals to output the
) flashes. Also, OR circuit c! 1) repeatedly outputs a high level signal and a low level signal to the protection circuit (c), but the pace potential of the second transistor @ does not rise to the operating potential due to charging and discharging with the resistor (R1) and capacitor (0). First, the second transistor plane continues to be off, the relay coil (RC) is not energized, and the first and second relay switches (ust) and (R8t) continue to be on.

Thereafter, when the counter (L-side sales switch (S) is turned off, the high-level signal that is input, that is, the number of frozen desserts sold, is counted, and the mix amount detector (3) indicates that the high-level frozen desserts have decreased, and the frozen desserts have decreased, /( Inside is supercooled within 2+ -φ+t
-φ-+-JJ訃ﾃ藨み Theory-Ikame, the counter an counts up 1 and continuously outputs a high level signal. Then, the OR circuit (off) continues to output a high level signal, the first transistor (c) continues to be on, and the alarm (to) continues to light up. Further, the protection circuit (c) also continues to receive the high level signal, the base potential of the second transistor (5) rises to the operating potential, and the second transistor (5) is turned on. When the $2 transistor is turned on, the relay coil (RC) is energized, the first relay switch (R5I) is turned off, and the energization to the electric compressor (4) is automatically stopped.

The refrigerant supply to the cooling pipe (7) is then stopped, and cooling of the freezing cylinder (2) is stopped. Further, the second relay switch (R8t) is also turned off, and even if the supply switch (S) is turned on thereafter, a high level signal is no longer applied to the clock terminal of the counter αD and the motor control circuit (2).

After that, the user checks the alarm (A), replenishes the mix tank (11 Hemics), and when the mix reaches the electrode (3A), the detection circuit (3B) outputs a low level signal instead of a high level signal. And circuit αs!I
'z A low level signal is inputted and a low level signal is outputted, and a high level signal is inputted to the reset terminal of the counter (17) via an inverter circuit (19).

Counting based on turning on the sales switch (S) is not performed.

Outputs a low level signal. Therefore, the OR circuit 01) outputs a low level signal, the alarm (C) goes out, the relay coil (RC) of the protection circuit (To) becomes de-energized, and the first and second relay switches (R8, ), (R8t)
is turned on, and the electric compressor (4) operates based on the on/off of the changeover switch (8S).

Therefore, the mix tank (1
) gradually decreases, and the mix amount detector (
When the mix decreases below the electrode of 3), the detection circuit (3)
The output of counter (B) becomes a high level signal, and the reset terminal of counter αη inputs a low level signal, and the counter (1
7) turns on the supply switch (810, that is, starts counting the number of sold frozen desserts, and when the preset number of sold items is reached and the counter aη counts up, the counter (IT)
outputs a high-level signal and the OR circuit (21) continues to output a high-level signal, so the protection circuit (c) operates to turn off the first relay switch (R8,) and turn off the refrigeration cylinder (21). ) can automatically stop the operation of the electric compressor (4) in the refrigeration system before supercooling occurs in the frozen desserts in the refrigerator. It is not necessary to heat the freezing cylinder (2) before restarting, and production of frozen desserts can be resumed more quickly than by replenishing the mix, and the motor (IIK) is not overloaded due to overcooling of frozen desserts. ,motor(
It can also extend the life of the IG. In addition, sales of frozen desserts can be continued until the mix amount detector (3) detects a decrease in the mix until the counter counts up. It is also possible to measure the increase in the number of frozen desserts sold until the operation of the refrigeration system is stopped.

(G) Effects of the Invention Since the present invention is a frozen dessert manufacturing apparatus configured as described above, the counter starts counting the number of sold frozen desserts after the mix in the mix tank is predetermined. When the number of pieces sold is sold, the counter counts up and activates the protection circuit, stopping the operation of the refrigeration system. Therefore, the heating of the freezing cylinder becomes unnecessary and the production of frozen desserts can be started as soon as the mixture is replenished.

[Brief explanation of the drawing]

1 and 2 show one embodiment of the present invention, FIG. 1 is a schematic electrical circuit diagram of a frozen dessert manufacturing apparatus, and FIG. 2 is a schematic configuration diagram of the frozen dessert manufacturing apparatus. (1)...Mix tank, (2)...Freezing cylinder, (3)...Mix amount detector, (171-...
Counter, (c)...Protection circuit. Applicant Sanyo Electric Co., Ltd. and one other agent Patent attorney Shizuo Sano Figure 2

Claims (1)

[Claims] 1. In a frozen dessert manufacturing apparatus in which a mix stored in a mix tank is appropriately supplied into a freezing cylinder connected to a freezing system, and frozen desserts such as soft serve ice cream produced in the freezing cylinder are taken out to the outside, the mix is a mix amount detector that detects when the mix amount in the tank has decreased to a predetermined amount; a counter that counts the number of sold frozen desserts after the mix amount detector detects a decrease in the mix amount; 1. A frozen dessert manufacturing apparatus comprising: a protection circuit that stops operation of the refrigeration system when the count is counted up.