JPS6147148A - Ice cream freezer - Google Patents

Abstract

PURPOSE:To enable the efficient cooling of a refrigeration chamber, and to prepare ice cream having high quality constantly and stably, by combining a mix tank, a syrup tank, a refrigeration chamber, a mixing chamber, a compressed gas source, a cooling system and its controlling means in a manner to exert a specific action. CONSTITUTION:When the shake base is delivered from the refrigeration chamber 3 to the mixing chamber, the pressure-drop in the refrigeration chamber is detected by the pressure sensor 17 to close the pressure switch. The solenoid valve 16 for the feeding of the mix is opened to supply the mix from the mix tank 1 to the refrigeration tank 3 until the pressure in the refrigeration chamber reaches a specific level, when the pressure switch is opened by the pressure sensor 17 to close the mix-feeding solenoid valve and stop the supply of the mix. The controlling circuit acts effectively in the above mix-supplying operation. The temperature rise caused by the supply to the mix is detected quickly by the rear thermistor, and the refrigeration operation of the rear cooling system is started by the rear cooling system controlling circuit to enable the quick preparation of the shake base having ideal hardness.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a frozen dessert manufacturing apparatus for manufacturing frozen desserts such as ice cream shakes.

(b) Conventional technology Generally speaking, one of the most important points to consider when designing a frozen dessert manufacturing device is vc. @There is operation control of the cooling system that cools the cooling room. This is important to ensure that the mix fed into the cooling chamber has a suitably hard and viscous frozen dessert base.

As an example of a temperature detection type operation control device that has been widely adopted in the past, the control device disclosed in Japanese Utility Model Application Publication No. 53-121199 has an extraction port formed in the front part and a raw material inflow port in the rear part. In view of the general configuration of the freezing compartment, there is a thermostat that senses the temperature of the freezing compartment near the outlet to control the compressor motor of the refrigeration system, and a thermostat that senses the temperature of the freezing compartment near the raw material inlet. A rear thermostat is provided in parallel to control the compressor motor, and the front thermostat is used to stop the compressor motor, and the rear thermostat is used to restart the compressor motor.

Such conventional equipment is said to be effective for continuous sales because it can quickly respond to replenishment of raw materials and resume cooling operation, but it is effective for continuous sales because of the quick response to replenishment of raw materials. In this case, the frozen dessert near the outlet at the front of the freezer compartment is cooled more than necessary.

Another problem that must be considered when designing a frozen dessert manufacturing apparatus is how to simplify the series of supply systems from raw material supply to product supply. However, the delivery system disclosed in U.S. Pat.
The feeding system of an automatic ice cream shake making machine disclosed in the 873 publication includes a pump for feeding the ordinary ice cream liquid mixture in the tank to the freezing cylinder and a pump for sucking out the syrup separately. We are prepared.

As described above, the conventional supply system cannot be said to be simplified at all, and has the disadvantage that the configuration is extremely complicated.

(c) Problems to be solved by the invention The present invention solves the various drawbacks of the above-mentioned conventional technology.
The main purpose of the present invention is to provide stable, high-quality frozen desserts at all times by efficiently cooling the cooling chamber. Furthermore, another object of the present invention is to simplify each supply system.

In order to achieve the above object, the present invention includes a mix tank for storing a mix, a plurality of syrup tanks for individually storing a plurality of types of syrup, and a rear inlet. It is equipped with one cooling chamber that cools and stirs the co-fed mix to produce a frozen dessert base, and a take-out port, and stirs and mixes the frozen dessert base in the front of the cooling chamber and the syrup in an arbitrarily selected syrup tank. a mixing chamber for making frozen desserts;
a compressed gas supply for delivering the mix to the cooling chamber and for delivering the selected syrup to the mixing chamber; a front cooling system for cooling the front of the cooling chamber; and a front cooling system for cooling the front of the cooling chamber; A front cooling system control means that includes a rear cooling system for cooling and a front temperature detection element that directly or indirectly detects the temperature of the frozen dessert base at the front of the cooling chamber, and independently controls the operation of the front cooling system. This frozen dessert manufacturing apparatus is provided with a rear cooling system control means that includes a rear temperature detection element that directly or indirectly detects the temperature of the frozen dessert base at the rear of the cooling chamber and independently controls the operation of the rear cooling system.

(e) Operation In such a configuration, the mix in the mix tank is supplied in a predetermined amount to the cooling chamber by suppressing compressed gas, where it is cooled and stirred to be finished into a frozen dessert base. At this time, the cooling chamber is cooled separately by the front cooling system and the rear cooling system, so that the frozen dessert base at the front of the cooling chamber near the outlet and the frozen dessert base at the rear of the cooling chamber near the mix inlet are almost uniformly cooled. It gives a hard and viscous finish. Therefore, only the frozen dessert base at the front of the cooling chamber and the syrup in the syrup tank arbitrarily selected by suppressing the compressed gas are supplied to the mixing chamber, where they are stirred and mixed to finally form the desired product. It is finished into a delicious frozen dessert and is automatically extracted from the outlet into a suitable cup.

(F) Example An example of the present invention will be described below using an ice cream shake manufacturing apparatus. FIG. 1 mainly shows a raw material supply system diagram, and (1) is a mix tank for storing liquid ice cream mix, which is equipped with an electrode-type mix out detection device 01) inside. (2 people), (2B)
, (2C) and (2D) are syrup tanks storing different liquid syrups, each of which is equipped with an electrode type syrup exhaustion detection device (22A) inside. (3) is a cooling chamber equipped with an extractor (4) on the front. (5) is a compressed gas tank for storing compressed gas such as nitrogen gas or carbon dioxide gas, and in the embodiment, it stores ultra-high purity nitrogen gas.

The compressed gas tank (5) is equipped with a primary pressure regulator (6) at its outlet, and the other end of a gas phase pipe (7) connected at one end to the outlet of the regulator (6) is connected to a secondary pressure regulator (8). ) to the branch joint (9). At the outlet of the joint (9), one mix press pipe Cl0) and 4
Book syrup suppression tubes (IIA), (IIB), (IIC
) and (11D) are connected, and the other end of the mix press pipe Cl0) is connected to the mix tank (1) via the check valve (121), and the syrup press pipe (11A)
, (11B), (11C) and (11D) are respectively connected to check valves (13A), (13B), (13C) and (1
3D) via syrup tanks (2A), (2B), (
2C) and (2D).

And the mix supply pipe α side 1 extending from the bottom of the mix tank (1)? It is connected to the rear part of the cooling chamber (3), and the supply pipe αa is equipped with a reverse valve (151) and a mix supply solenoid valve (
101 is further connected to a pressure detection device αD which detects the pressure inside the pipe and indirectly controls the mix supply electromagnetic valve by detecting the mix amount in the cooling chamber (3).

On the other hand, the syrup tank (2 persons), (2B), (2C), and (2D) extend from the bottom of the
), (18B), (18C) and (18D) are the first branch pipes (18A1), (18B1) and (18D), respectively.
C1) and (18D1) and a second branch pipe (18A2),
After branching into (18B2), (18C2) and (18D2), they are connected again to the extractor (4), and the first branch pipe (18A1) is connected to the flow regulator (19A1).
) is connected to the syrup supply solenoid valve (20A1), and similarly to this, all other branch pipes are also connected to flow regulators and syrup supply solenoid valves (19A2) and (2OA2),
(19B1) and (20B1), (19B2) and (20B2), (19C1) and (20C1), (19
C2) and (20C2), (19D1) and (20D
1), and (19D2) and (20D2) are connected.

In addition, (c) has one end connected to the gas phase pipe (7) downstream of the secondary pressure regulator (8), and the other end connected to the mix supply pipe α (IK connection) between the check valve α■ and the solenoid valve aQ. This is an overrun adjustment pipe that bypasses the mix tank (1), and the adjustment pipe is equipped with a reverse valve and a variable mixing ratio of nitrogen gas in the mix to make the overrun and run variable. A manual needle valve +25+ is connected to control it.Furthermore, one end of (to) is connected to the gas phase pipe (7) downstream of the secondary pressure regulator (8), and the other end is connected to the extractor (4). A clean pipe is connected to clean the extractor (4), and a check valve (5) and a solenoid valve with a needle (to) are connected to the clean pipe (c). 5) This is a gas exhaustion detection device that detects nitrogen gas exhaustion using pressure.

Next, referring to FIG. 2, a cooling system for cooling the cooling chamber (3) will be explained. The cooling system of the present invention includes a front compressor (to), a front air-cooled condenser C31), and a double-tube front water-cooled condenser G, through which water passes through an inner tube and refrigerant passes through an outer tube (not shown in detail). part receiver
Tank (c), front cooling solenoid valve (b), front expansion valve used as a pressure reducing device (to), front evaporation pipe (to), and front achiemulator C3? ) connected in a ring, a rear compressor (to), a rear air-cooled condenser, a rear water-cooled condenser (411) with the same configuration as the front water-cooled condenser 03, a rear receiver tank (4υ, a rear cooling solenoid valve (42 , the rear cooling system consists of a rear expansion valve (49) adopted as a pressure reducing device, a rear evaporation pipe (49), and a rear accumulator (3) connected in a ring, so that it is clear that the front cooling system and rear cooling system are omitted. Established with similar components.

Of these, the front evaporation pipe (to) of the front cooling system is wound around the front outer periphery of the cooling chamber (3), and the rear evaporation pipe (44) of the rear cooling system is wrapped around the front outer circumference of the cooling chamber (3).
By wrapping around the rear outer circumference of the cooling chamber (3), the front cooling system can independently cool the front of the cooling chamber (3), and the rear cooling system can independently cool the rear of the cooling chamber (3). It becomes possible to do so. In addition, in the example, the rear evaporation pipe (to) is approximately twice the winding area of the front evaporation pipe (to).
Although a 440-turn area is provided, this was determined based on the equal pressure capacity of the front compressor (to) and the rear compressor (to), and is not necessarily limited to the ratio of the example. In addition, the rear evaporation pipe (not limited to the four-way branch configuration, but may be a winding configuration of one pipe). This includes what constitutes the rear evaporation area.

The system also includes a front air-cooled condenser 01) and a front water-cooled condenser 02 as related devices of the front cooling system.
The rear cooling system is equipped with a front fan (46) that air-cools both the rear cooling system and a front water saving valve (47) that responds to the condensing pressure and opens when the pressure reaches a predetermined high pressure. It is equipped with a rear fan (4e) and a rear water-saving valve (4) that air-cool both the air-cooled condenser and the rear water-cooled condenser (4G). According to this configuration, the water-cooled condenser 62 and (4 (I) are equipped with The refrigerant passing through the outer tube can be expected to be cooled at sufficient pressure by the fan (Ae) and (4 barrels) even when not in use, making it extremely efficient. The configuration of the front bypass pipe 5I and the front hot gas solenoid valve 6υ, and the configuration of the rear bypass pipe 62 added to the rear cooling system and the opening of the rear hot gas solenoid valve function to create ice crystals, which will be described later.

Therefore, the cooling operation of the front cooling system is independently controlled based on the temperature-sensing operation of the front temperature detection element (551) using a thermistor, and the rear cooling system is controlled by the rear temperature detection element 551 using a thermistor. The cooling operation is independently controlled based on the temperature-sensing operation of It is arranged at the rear end in the cooling chamber (3) near the inlet (14A) of the mix supply pipe I into the cooling chamber (3). The present invention employs a direct temperature detection method in which the front thermistor 64 and rear thermistor f551 are placed inside the cooling chamber (3) as described above, but these are placed on the outer wall of the cooling chamber (3). It is also possible to adopt an indirect temperature detection method.

As shown in the schematic layout diagram, there is a refrigerated IE at the rear of the main unit 6e.
5η are installed in parallel. The refrigerator 6η consists of a refrigerator compartment with a heat-insulating structure and a machine room 5 defined above it, and the machine room 151 is equipped with a compressor, a condenser, and a 7A/gas for cooling the condenser 6υ. Are these the same as the evaporator installed when the opening was formed on the top wall (58A) of the refrigerator compartment? ＠Configure the device. The cold air generated by the operation of the device is sent to the refrigerating compartment (toward) by an air supply fan disposed slightly below the evaporator. In addition, the refrigerating room (581) is divided into two upper and lower units by a partition plate (K) with a large number of ventilation holes (581) to make effective use of the room. syrup tank (2A
), (2B), (2C), and (2D), as well as the auxiliary mix tank trowel are stored with the opening/closing doors fi9 and σ[ opened.

On the other hand, in the lower part of the main body 5e, each compressor (to) and side of the front cooling system and rear cooling system, each air cooling condenser Gυ and 09, each water cooling condenser (33 and (40), and each fan (46) and A suction port συ is formed at the lower front of the main body facing the air-cooled condenser C31 and cll.A cooling chamber (3) with a built-in stirrer σ2 is arranged at the upper part of the main body. The extractor (
4) is provided with a support σ on which the cup 73 is placed.

Stirrer (72 is a rotating shaft e15 connected to the stirrer σ2
Rotation is possible by passing a belt σ between the driven pulley σQ connected to the output shaft of the drive motor σ and the main drive pulley σ barrel connected to the output shaft of the drive motor σ. Furthermore,
A cup dispenser screen is configured above the main body.

Next, based on FIGS. 4 and 5, the extractor (4)
The structure of is detailed. The resin cover [F]υ that closes the front of the cooling chamber (3) has a cylindrical vertical hole that opens at both ends □
A cylindrical horizontal hole (c) extending toward the cooling chamber (3) from approximately midway between □□ and the vertical hole (to) and having an open end is formed.

A bearing plate (G) with an outlet (G) formed at the bottom is screwed onto the opening edge of the side hole (C) on the side of the cooling chamber (3). A shaft (goods) extending rearward from the valve base is slidably supported. In addition, a coil spring (c) is placed between the bearing temporary location and the pulp base, surrounding the shaft member η, and this spring (c) is usually attached to a step formed in the middle of the horizontal hole. By pressing the pulp, the pulp bell acts to close the side hole. Although the valve base is mainly made of stainless steel, the part that is pressed against the step part is made of silicone material to improve sealing performance.

On the other hand, the mechanism for moving the pulp (e) backward against the spring force and opening the horizontal hole (e) is such that the rear end of the pulp (a)
A slidable operating rod (T) whose front end protrudes forward through the cover brocade, and the operating rod (90
The lower part is rotatably connected to the front part of the operating rod (9■) in order to reciprocate the lever (9), and the lever (9) has a rotation fulcrum (9υ) connected to the cover [F]υ at the upper part. It is composed of a solenoid device (goods) having a plunger (94A) connected to an operating pin (to) perpendicular to the upper rear surface of the lever (92) and a return spring (178) that returns the lever (92) to normal. In addition to being automatically opened and closed based on the operation of a solenoid, the pulp can also be opened and closed by manually operating the lever.

In addition, the bottom opening of the vertical hole (84) is the extraction port (95A).
The mixing chamber (G) is used as a mixing chamber (G), and a stirring blade having a large number of through holes (961) is disposed in the mixing chamber (G).

The stirring blade η is connected to the lower part of the rotating shaft extending upward through a sliding bearing press-fitted into the upper part of the vertical hole (8z).Furthermore, the rotating shaft 90 can pass through the protective tube θη. It is connected to a flexible cable (101), and the rotation is transmitted by connecting the end of this cable (101) to a motor (102) as shown in FIG. A cylindrical bearing (103) screwed onto the rear face and protruding inward of the cooling chamber (3) supports the front part of the stirrer, and supports the plate-shaped heater wound around the outer surface of the front evaporation pipe (end). (104) is prepared for sterilizing the cooling chamber (3), and this heater (104) is arranged up to the rear evaporation pipe.

The above-mentioned support (74) for placing the cup σ at a position facing downward from the extraction port (95A) of the mixing chamber (E) has a conical base (74A) and an outer surface of the conical base (74A). It is formed by four support plates (74B) arranged at intervals of 100 degrees, and a fitting stepped part (74C) is formed at the corner of the support plate (74B) to fit on the lower surface of the cup σJ. Stable support.

Then, in combination with this support σ4, a weight detection device (1
05) is configured. The device (105) has a base (74A
) and the base (107).
) is placed between the Hall element (108) attached to the back surface of the magnet (106) and the base (107).
06) in a predetermined position away from the Hall element (108), and furthermore, when a load is applied to the support σ4, the support ff is lowered with almost no horizontal movement. Base to let (107)
A cylindrical lower guide (110) protrudes upward from the base (
The lower guide (110) protrudes downward from the lower surface of the
A cylindrical upper guide (111) with a slightly larger diameter is provided.

The weight detecting device (105) moves the magnet (106) towards the Hall element (10
8) and responds to the resulting change in magnetic force between the magnet (106) and the Hall element (108).
) according to the output voltage of the syrup TA valve (20A
1), (20A2), (20B1), (20B2), (
20C1), (20C2), (20D1) and (20D
2) and the solenoid (goods), in particular,
When the support device σ is lowered to a predetermined position, these are controlled to be inactive and the extraction operation is automatically terminated.

To explain in more detail, for example, when feeding the syrup in the syrup tank (2 people) to the extractor (4), one syrup solenoid valve (20A1) is opened by the extraction signal, and the support ff4 is opened by the first The valve closes when it passes through the first position and descends to the second position. Other syrup solenoid valves (20A
2) is a transition from the first position to the second position when the output voltage of the Hall element (108) occurs within a preset reference time when the support 174) is lowered from the stop position to the first position. The valve is opened until the support ff4) is lowered. This is because if the support ff4 descends to the first position quickly, the amount of syrup will be insufficient.
The operations A1) and (20A2) are effective in keeping the amount of syrup occupied during shaking constant.

By the way, as mentioned earlier, the syrup supply pipes (18A), (18B), (18C) and (18D) connected to the extractor (4)K and the cleaning pipe are led out to the front of the main body (to). As shown in detail in FIG. 5, it communicates with the upper part of the mixing chamber (G).

Among these, syrup supply pipes (18A), (18B), (
18C) and (18D) are composed of transparent tubes, and the terminal nozzles (181A), (181B), (181C) and (
181D) protrudes inward from the mixing chamber, and a cleaning pipe C6) is positioned above these.

Next, the electric circuit configuration of the present invention will be explained with reference to FIG. (112) is the power switch, (113) is the cooling contact (
113A) and a ready contact (113B), (16) is the mix supply solenoid valve, and the pressure switch (17A) included in the pressure sensing device is connected in series. (21) is the mix out detection device;
(20AI), (20A2) ・(20D1) and (2
0D2) is the syrup solenoid valve explained in FIG.

(22A) is the syrup out detection device that detects when the syrup tank (2 people) is out of syrup, (22D) is the 702 out of syrup detection device that detects when the syrup tank (2D) is out of syrup, c! 8) is the solenoid valve with a needle, and the solenoid valve ball is equipped with a manual cleaning switch (1) that opens the valve at will.
14) is connected in series. ση is the drive motor of the stirring device σ, ((b) is the solenoid, (102)
is a driving motor for the stirring blade (97).

Thus, a switch (115) connected in series with the syrup solenoid valve (20A1), a switch (116) connected in series with the syrup solenoid valve (20 people 2), and a syrup solenoid valve (20A1) are connected in series.
The switch (117) connected in series with the syrup solenoid valve (20D2), the switch (117) connected in series with the syrup solenoid valve (20D2)
8) The switch (119) connected in series with the stirrer motor ση, the switch (120) connected in series with the solenoid (94), and the switch (121) connected in series with the stirring blade motor (102) are extracted. The contacts are controlled to open and close by an extraction control circuit (122) that centrally controls the operation, and this control circuit (122) is connected to a plurality of automatic return extraction command switches (123) and (124).
), (125) and (126) start the operation. Here, extract command switch (123), (12
4).

(125) and (126) are provided corresponding to the syrup tanks (2 persons), (2B), (2C) and (2D), and for example, when the extraction command switch (123) is pressed, the switch ( 115) and (116) become operable, and when the extraction command switch (126) is pressed, the switches (117) and (118) become operable. In addition, the switches (119), (120) and (121) are any extraction command switches (123), (124), (
125) and (126) are also pressed, the extraction control circuit (122) closes them at the same time. Then, the extraction control circuit (122) operates the switch (1
15) All the switches whose contacts are closed among switches (121) are opened, but in the opening order, the switches whose contacts are closed among switches (115) through (118) are opened first, and then the switches whose contacts are closed are opened. Then, the switch (120) is opened, followed by the switch (121), which is further delayed, and finally the switch (119) is opened.

Note that the switch (119) is the extraction command switch (123).
) to (126), the circuit is intermittently closed during cooling operation and under non-extraction conditions, which will be described later.

(127) is the front compressor (to), the rear compressor (to), the front cooling solenoid valve (b), the rear cooling solenoid valve (42), the front hot gas solenoid valve 51J, and the rear hot gas solenoid valve ( 54) y41 - Cooling control circuit for overall control.

The cooling control circuit includes a front cooling system control circuit (128) that controls the operation of the front cooling system described above, and a rear cooling system control circuit (128) that controls the operation of the rear cooling system, as shown in detail in FIG. 129) and a hot gas control circuit (130) for making ice crystals.
Of these, the front cooling system control circuit (128) and the rear cooling system control circuit (129) have the same configuration except for the set temperature.

The specific circuit configurations of these will be explained below.

First, in the front cooling system control circuit (128),
(131) is the front thermistor l! mentioned above. 54), a bridge circuit composed of resistors (132), (133), (134) and (135), and a variable resistor (136), (
137) is an amplifier that amplifies the unbalanced voltage generated in the bridge due to a change in the resistance value of the thermistor 5a, (138)
is the first comparator in which the midpoint of resistors (139) and (140) is connected to the positive input terminal (138A), and the output of the amplifier (137) is connected to the negative input terminal (138B). Connect the output of 137) to the positive input terminal (141 &), and connect the resistors (140) and (142
) is connected to the negative input terminal (141B), and the first comparator (138
) is connected to the base of the first transistor (144) and the second transistor (14) via the diode (143).
5) and the second comparator (1).
The output of 41) is connected between the collector of the first transistor (144) and the base of the second transistor (145) via a diode (146). (147) is a third transistor connected via (149) to a dividing resistor (14B) connected in series between the second transistor (145) and the ground.

On the other hand, in the rear cooling system control circuit (129),
The internal configuration of the temperature detection circuit (150) to which the rear thermistor mark is connected is the same as the front cooling system control circuit (128) described above.
), so the explanation will be omitted. However, the difference between the two is the front cooling system control circuit (128)
The rear cooling system control circuit (129) has a slightly higher temperature setting.

(151) is the output taken out from the collector of the third transistor (147) and the rear temperature detection circuit (15).
AND circuit inputting the output taken from 0), (15
2) is an inverter that inputs the collector output of the third transistor (147) and inputs its inverted output to the AND circuit (153), and (154) is the rear temperature detection circuit (150).
Input the output of , and send the inverted output to the AND circuit (153)
K input inverter, (155) is an AND circuit (15
A flip-flop (158) has the output of the inverter (158) as the set input and the output of the AND circuit (151) as the reset input via the diode (156).
An AND circuit (159) inputs the output of the inverter (152) and the output of the flip-flop (155);
4) and the output of the flip-flop (155); (160) is the output of the flip-flop (15);
(161) is a time constant circuit consisting of a resistor (161A) and a capacitor (161B), and (162) is an inverter that inputs the output of the inverter (160) and the output of the time constant circuit (161). AND circuit, (
163) is a flip 70 tube with the output of the AND circuit (162) as the set input and the reset terminal connected to the ground (164), and its output is used as the reset input of the flip-flop (155) via the diode (157). There is. (165) is the AND circuit (158) and (
159) are connected to diodes (166) and (16), respectively.
(168) is an AND circuit that inputs the collector output of the third transistor (147) and the inverted output of the inverter (165);
) is an AND circuit inputting the output of the rear temperature detection circuit (150) and the inverted output of the inverter (165);
0) is a fourth transistor that becomes conductive upon receiving the output of the AND circuit (168), and when the transistor (170) is turned on.
A first relay (171) which is excited by is connected. (172) is a fifth transistor that becomes conductive upon receiving the output of the AND circuit (169);
2) is connected to the second relay (173), which is excited by turning ON. (174) is a sixth transistor that receives the output of the AND circuit (158) and becomes conductive; the third relay (174) is excited when the transistor (174) is turned on;
175) is connected. (176) is an AND circuit (1
59), which becomes conductive in response to the output of
A fourth relay (177) is connected which is excited when the transistor (176) is turned on.

In FIG. 6, the normally open contact (171A) of the first relay (171) is connected in series with the front cooling solenoid valve (Di), and the second relay is connected in series with the rear cooling solenoid valve (43). Connect the normally open contact (173A) of (173) to the third relay (175) in series with the front hot gas solenoid valve 61).
Connect the normally open contact (175A) of the fourth relay (177) in series with the rear hot gas solenoid valve (to), and connect the normally open contact (177A) of the fourth relay (177) to the rear hot gas solenoid valve (to).
) in series with the normally open contact (171B) of the first relay (171).
) and the normally open contact (175B) of the third relay (175) are connected, and the normally open contact (173B) of the second relay (173) and the fourth relay (173) are connected in series with the rear compressor side.
Connect the wet column circuit of the normally open contact (177B) of 77).

Next, the present invention will be explained in detail. The operation starts with supplying the mix to the cooling chamber (3). First, position the operation switch (113) to the preparation contact (113B) and turn on the power switch (112). The valve opens.This opens the mix tank (
1), the pressure is regulated to approximately 6 kg/d by the secondary regulator (6), and further to approximately 3.5 to 9 kg/d by the secondary regulator (8).
Pressure of nitrogen gas whose pressure is regulated to /cIL is the gas phase tube (7)
, and is further applied through the mix suppression pipe C1 (l), so this pressure causes the mix to be fed into the cooling chamber (3) from the rear inlet (14A) of the cooling chamber (3) through the mix supply pipe α4. The mix is then stored in the cooling room (3).
When the pressure detection device αη detects that a predetermined amount of K has been supplied, the pressure switch (17A) is opened and the mix supply solenoid valve side is closed to end the supply of the mix.

After that, the operation switch (113) is connected to the cooling contact (113).
When switching to A), cooling operation is started by the cooling control circuit @. The circuit operation at this time will be explained based on FIGS. 6 and 7. Since the mix temperature supplied to the cooling M(3) is high, the resistance values of the front thermistor 54) and the rear thermistor 5!19 are small.
37) has a high positive input voltage, and its output voltage also becomes high. The output of this amplifier (137) is connected to the first comparator (
138) and the plus input terminal (141A) of the second comparator (141). Here, the output voltage of the amplifier (137) is preset to be higher than the fixed voltages (V, ) and (V, ) when the temperature is high, and the fixed voltages (V, ) and (Va) when the temperature is low. ) is preset to be lower. As a result, the output voltage of the first comparator (138) becomes "L" and the output voltage of the second comparator (141) becomes rHJ. At this time, the voltage (Va) is drawn to rLJ through the diode (143), so the first)
La: ysis II (144) ha OF F, (V
4) Due to the reverse bias of the diode (146), the chisel pressure becomes rHJ from 0FFK of the first transistor (144), and the second transistor (145) also turns OFF. Furthermore, the collector voltage of the second transistor (145) is “L”.
”, the WJ3 transistor (147) is also turned off.

Therefore, the collector voltage of the third transistor (147) becomes rHJ. Similarly to this, the rear temperature detection circuit (150
) output voltage is also rHJ.

In response to this, the output voltage of the AND circuit (151) is “H”
'', the output voltage of the inverters (152) and (154) becomes rLJ. At this time, 7 lipflops (155)
The output voltage of the AND circuit (151) is input to the reset input of
Since HJ is input through the diode (156), the output voltage of the flip-flop (155) is rLJ.

Upon receiving these signals, AND circuits (158) and (15
The output voltage of 9) is rLJ. On the other hand, the AND circuit (1
68), since the collector voltage of the third transistor (147) and the output voltage L of the inverter (165) are both rHJ, the output voltage is rHJ, and the AND circuit (16
In case 9), the output voltage of the rear temperature detection circuit (150) and the output voltage of the inverter (165) are both rHJ, so the output voltage is rHJ.

Therefore, the fourth transistor (170) and the fifth transistor (172) are ONL, the first relay (171) and the second relay (173) are energized, and the first relay (171) shown in FIG. Normally open contacts (171A) and (17
1B) and the normally open contact (173A) of the second relay (173)
and (173B) are closed. As a result, the front compressor (to) is operated, the front cooling solenoid valve is opened, and cooling operation by the front cooling system is started, and the rear compressor (to) is operated, and the rear cooling solenoid valve is opened. Valve (4) opens and the cooling operation by the rear cooling system starts. At this time, the front fan (46) and rear fan (48 also rotate to turn the front pot condenser C31), 03, and the rear cooling system. Condenser (to cool 3LJ and capacitor).

By the way, the output voltage of the inverter (160) is rHJ since the output voltage "L" of the flip-flop (155) is input, and the output voltage rLJ of the flip-flop (155) is input through the resistor (161A). The output voltage of the circuit (162) becomes rLJ. Since this is connected to the set input of the clip 70 tube (163), the flip-flop (163) is manually set rLJ, and the reset input is always rLJ, so the output voltage of the flip-flop (163) maintains the condition of rLJ. do.

As the mix supplied to the cooling chamber (3) is cooled, the mix gradually hardens and is finished as a shake base. When this shake base temperature becomes low, the front thermistor 54) and the rear thermistor 551
resistance value increases. For example, if the front thermistor 5a detects a predetermined drop in temperature of the shake base,
The positive input voltage of the amplifier (137) becomes low, and the output voltage of the amplifier (137) also becomes low. At this time, the amplifier (
137) becomes lower than the fixed voltages (■,) and (V,), and the output voltage of the first comparator (138) becomes r) (J,!2 The output voltage of the comparator (141) becomes r
Becomes LJ. This ensures that the voltage at (V, ) is not affected by the reverse bias of the diode (143) and (v4)
The voltage is the output voltage rLJ of the second comparator (141)
The base of the second transistor (145)
A potential difference is generated between the emitters of the second transistor (145
) is turned on, and the first transistor (144) is also turned on.

Sara K.

Since the collector voltage of the second transistor (145) is "H", the third transistor (147) is also turned on. Therefore,
The collector voltage of the third transistor (147) becomes "L".

On the other hand, if the rear thermistor (g) does not detect the predetermined temperature drop of the shake base and the output voltage of the rear temperature detection circuit (150) maintains rHJ, then the AND circuit (151) The output voltage is "L", the output voltage of the inverter (152) is rHJ, and the inverter (152) is rHJ.
The output voltage of 54) is rLJ.

From this K, the output voltage of the AND circuit (153) becomes rLJ, and the set and reset input voltages of the flip 70 tube (155) both become Kl''LJ, so the output of the flip-flop (155) changes to rLJ. .

In response to this, the output voltages of the AND circuits (158) and (159) become rLJ. On the other hand, AND circuit (168)
is when the collector voltage of the third transistor (147) is "L"
, since the output voltage of the inverter (165) is rHJ, its output voltage is rLJ, and the AND circuit (169)
is the rear temperature detection circuit (150) and the impark (165)
) are both K rHJ, so their output voltages continue to be rHJ. Therefore, the fourth transistor (17
0) is 0FFL, the first relay (171) is de-energized and the normally open contacts (171A) of the relay (171) and (
171B) is opened. As a result, the front compressor (2) stops, the front cooling solenoid valve (2) closes, and the operation of the front cooling system is stopped.

On the other hand, the fifth transistor (172) continues to be ON, and the second relay (173) continues to be in the excited state, so the normally open contacts (173A) and (173B) of the second relay (173)
through the rear compressor (to) and the rear cooling solenoid valve (
6) will continue, and only the rear cooling system will operate.

When the rear thermistor field detects a predetermined temperature drop of the shake base, the output voltage of the rear temperature detection circuit (150) also becomes rLJ. Then, the third transistor (1
47) Collector voltage and rear temperature detection circuit (150)
When the output voltages of both are K rLJ, the AND circuit (15
The output voltage of 1) is "L", the inverter (152) and (
154) output voltage is rHJ.

As a result, the output voltage of the AND circuit (153) becomes "H", the set input voltage of the flip-flop (155) becomes "H", the reset input voltage rLJ, and the output voltage of the 7 flip-flop (155) changes to rHJ. As a result, the output voltage of AND circuits (158) and (159) is r
HJ, and the output voltage of the AND circuit (169) is r
Becomes LJ. Therefore, the fifth transistor (172) is 0
FFL, the excitation of the second relay (173) is released and the normally open contacts (171) and (173B) of the second relay (173) are released.
) opens. Due to this, the rear cooling system is closed and the operation of the rear cooling system is stopped.

As described above, when the first cooling operation by the front cooling system and the rear cooling system both stop, the AND circuit (1
The output voltages of 58) and 159 are both K "H".

Therefore, the sixth transistor (174) and the seventh transistor (176) are ONL, the third relay (175) and the fourth relay (177) are excited, and the third relay (17
5) normally open contacts (175A) and (175B) and the fourth
Normally open contacts (177A) and (177) of relay (177)
B) is closed. Accordingly, the front compressor is operated, the front hot gas solenoid valve 511 is opened, and the hot gas is circulated through the bypass pipe to the front evaporation pipe to the cooling chamber (3). At the same time as the front heating operation is started, the rear compressor (to) is operated, and the rear hot gas solenoid valve is opened to circulate the hot gas through the bypass pipe 52 to the rear evaporation pipe (44) into the cooling chamber (3).
Start rear heating operation.

Such a heating operation of the cooling chamber (3) is performed by thawing the minute ice crystals contained in the once hardened shake bake 2, separating it into fat and water, and recooling the separated state. This allows ice crystals to grow larger in a shorter time, and these ice crystals are effective in eliminating the stickiness of the final shake. The heating operation for making ice crystals can be solved by performing it once during pulldown, with some exceptions. In other words, once ice crystals of a certain size are made 5, even if a new mix is supplied, the ice crystals that already exist in the cooling chamber (3) will be used as a trigger to easily grow the ice crystals. It is from.

By the way, when the output voltage of the flip-flop (155) changes to rHJ, the output voltage of the inverter (160) is rLJ, so the output voltage of the AND circuit (162) becomes "L", and the flip-flop (163) sets and Since both reset input voltages are rLJ, the output voltage of the flip-flop (163) is held at "L".

Then, when the cooling chamber (3) is heated and the shake base temperature becomes high, and the front thermistor 64) detects a predetermined increase in the shake base temperature, the resistance value of the front thermistor 54) becomes small, and the above-mentioned condition is reached. Finally, the collector voltage of the third transistor (147) changes to rHJ again. At this time, the output voltage of the rear temperature detection circuit (150) is rL.
If J is maintained, the output voltage of the AND circuit (151) is "L", and the output voltage of the inverter (152) is also "L".
L'', the output voltage of the inverter (154) becomes rHJ. Further, the output voltage of the AND circuit (153) receiving the outputs of the inverters (152) and (154) is rLJ. At this time, since the set and reset input voltages of the 7 lip-flop (155) are both rLJ, the output voltage of the 7-lip flop (155) maintains rHJ. Therefore, the output voltage of the AND circuit (158) becomes "L", the sixth transistor (174) is set to 0FFL, and the third relay (175) is set to 0FFL.
) is de-energized and the normally open contacts (175A) and (175B) of the relay (175) are opened. As a result, the front compressor (to) stops and the front hot gas solenoid valve 51) closes, stopping the heating operation of the front part of the cooling chamber (3), and only the heating operation of the rear part of the cooling chamber (3). continue.

In addition, the AND circuit (168) K is at this time r'HJ K
The output voltage of a certain AND circuit (159) is
65), its output voltage is rLJ
Therefore, the fourth transistor (170) is not turned on, and the cooling operation of the front cooling system is not started at this point. The resistance value of 551 becomes small, and as described above (rear temperature detection circuit (150
) also changes to rHJ again. Then, the output voltage of the AND circuit (159) becomes rLJ, the seventh transistor (176) is turned to 0FFL, the fourth relay (177) is de-energized, and the normally open contact (1) of the relay (177) is turned off.
77A) and (177B) are opened. by this,
The rear hot gas solenoid valve (to) closes to stop the heating operation of the rear part of the cooling chamber (3). In addition, the rear compressor (
) will continue to operate according to the following explanation.

In this way, the conditions for both the collector voltage of the third transistor (147) and the output voltage of the rear temperature detection circuit (150) to be rHJ under which the heating operation of the front and rear parts of the cooling chamber (3) are stopped are as described above. The conditions are the same as those at the start of the cooling operation, and the fourth transistor (170) and the fifth transistor (170) The transistor (172) is ONL, the first relay (171) and the second relay (173) are energized, and the first relay (171) is energized.
) normally open contacts (171A) and (171B) and normally open contacts (173A) and (173B) of the second relay (173)
Close the circuit. This allows the front compressor C3 (1
) is operated, the front cooling solenoid valve (b) is opened, and the cooling operation of the front cooling system is restarted, and the rear compressor (2) is continuously operated via the normally open contact (173B), and the rear cooling system is restarted. The solenoid valve (No. 4) opens and the cooling operation of the rear cooling system is resumed.

Here, the output voltage of the flip-flop (155) is rH
When changing from J to rLJ, the output voltage of the inverter (160) changes from rLJ to rHJ, but the output voltage of the inverter (160) changes from rLJ to rHJ.
), the input voltage of the AND circuit (162) slowly changes to rHJ due to the discharge time of the time constant circuit (161).
to rLJ. At this time, the AND circuit (16
The output voltage of 2) becomes rHJ. As a result, the set input voltage of the flip-flop (163) becomes rHJ, the reset input voltage becomes rLJ, and the flip-flop (163) becomes rHJ and the reset input voltage becomes rLJ.
3) is rT(J. Once the output voltage of this flip-flop (163) becomes "I("), the reset input voltage of this flip-flop (163) is always rT(J).
Since it remains LJ, from now on, flip 70 knob (163)
The output voltage rHJ remains unchanged. Furthermore, since the output of the flip-flop (163) is connected to the reset input of the flip-flop (155) through the diode (157), the output voltage of the flip-flop (155) also remains rLJ.

Therefore, from now on, AND circuits (158) and (159)
) does not become "H", the sixth and seventh transistors (174) and (176) are not turned on, so the front and rear hot gas solenoid valves 6υ and
does not operate and heating operation is not performed. Also, since the input voltage of one of the AND circuits (168) and (169) remains "H", the AND circuits (168) and (169)
The output voltage is determined by the other input state. That is, the AND circuit (168) changes the output depending on the state of the output voltage based on the detection operation of the front thermistor 54), and the AND circuit (169) changes the output (the state of the output voltage) based on the detection operation of the rear thermistor (A). As a result, the front cooling system control circuit (128) independently controls the cooling operation of the front cooling system based on the detection operation of the front thermistor 54). , cooling room (3
) Maintains the front shake base in an ideal hardness state,
The rear cooling system control circuit (129) independently controls the cooling operation of the rear cooling system based on the detection operation of the rear thermistor 69, thereby adjusting the shake base at the rear of the cooling chamber (3) to an ideal hardness. It is to maintain the condition.

As described above, the mix supplied to the cooling chamber (3) K is cooled, and the finished shake base is appropriately stirred by the stirrer σ, and the final ice cream shake is made by mixing the syrup. The extraction operation will be explained below. For example, if you press the extraction command switch (123),
Switches (115), (120), (121) and (1
19) is closed. This allows the syrup supply solenoid valve (
, 20A1) is opened, and the syrup tank (2 people) is suppressed by nitrogen gas (approximately a, s kg/d) applied through the gas phase pipe (7) and the syrup suppression pipe (11A). The syrup in (2A) is supplied from the syrup supply pipe (
18A), the first branch pipe (18A1), and the transparent syrup supply pipe (18A) from the nozzle (181A) to the mixing chamber (951). At the same time, the solenoid (941) is energized and the plunger ( 94A) is attracted and the actuating pin (931 pulls the lever (93) forward. Then, the lever (921) rotates around the fulcrum (9υ) and moves the actuating rod (A) backward. This actuating rod - As a result of the backward movement of the pulp (86), the pulp (86) is pushed backward against the spring (c) and opens the horizontal hole.As a result, the shake base in the cooling chamber (3) is moved by the stirrer σ which is linked to the drive motor ση.
It is sent out from the outlet through the side hole to the mixing chamber (G).

In this way, the syrup and shake base that are continuously supplied to the mixing chamber (G) are stirred and mixed at an extremely high speed by the stirring blade (supply) that is linked to the drive motor (102), and finished as an ice cream shake. Cups (C) K are continuously extracted from the extraction port (95A).

When the support tool σ4 descends to the first position from the itK of the shake extracted into the cup σ3, if the extraction speed is fast as described above, at this point the weight detection device (
The switch (116) is closed based on the signal from the Hall element (108) of the syrup supply solenoid valve (2).
0A2) is opened and the syrup is passed through the second branch pipe (18A2) to increase the syrup flow rate, but if the extraction speed is slow, the switch (II6) will not close and the syrup supply solenoid valve (20A2) will not open. . In this way, the syrup content in the shake is adjusted to be approximately constant. Then, when the support σ is lowered to the second position and the weight detection device (105) detects a predetermined weight of the shake extracted into the cup υ3, a signal from the Hall element (108) is sent to the extraction control circuit (122). ), first switch (11
5) Open the circuit and close the syrup supply solenoid valve (20A1), and if the switch (116) is closed at this time, open it at the same time and close the syrup supply solenoid valve (20A2). As a result, the supply of syrup to mixing N (e) is stopped. After this, the excitation to the solenoid (94) is released and the lever (9) is returned to the normal position by the action of the return spring (17B), and the operating lever that follows this also returns to the forward position. Then, the pulp ■ is pressed against the stepped part of the side hole (c) by the coil spring (c), and blocks the side hole (c).Syrup and shake-based electric slow stop operation is performed by the following extraction. When different syrups are fed into the mixing chamber (to), it is effective to prevent contamination of syrups from previous extractions.Then, the switch (120) is opened and the power to the motor (102) is Turn off the electricity to stop the stirring blades, almost extract the remaining shake in the mixing chamber (e), and finally open the switch (119) to cut off the electricity to the motor (2) and turn off the stirrer. make it stop.

In the extraction operation as described above, when the shake base in the cooling chamber (3) is sent to the mixing chamber (to), the pressure detection device αη detects the pressure drop in the cooling chamber (3), and the pressure switch (17A) detects the pressure drop in the cooling chamber (3). ) is closed. Then, the mix supply solenoid valve (IQ) opens to replenish the mix in the mix tank (1) to the cooling chamber (31).
) When the pressure within ) reaches a predetermined value, the pressure detection device cLη detects this and opens the pressure switch (17A), closes the mix supply solenoid valve e, and stops supplying the mix.

In such a mix replenishment operation, the control circuit (127) of the present invention operates effectively. That is, the rear thermistor immediately detects the temperature increase due to mix replenishment, and the rear cooling system control circuit (129) starts the cooling operation of the rear cooling system to immediately finish the shake base in an ideal hardness state. I can do it.

Further, in the above embodiment, the extraction operation was explained when the extraction command switch (123) was pressed, but the extraction command switches (123), (124), (125) and C'f26
), it is possible to freely extract an ice cream shake containing syrup according to one's taste in the same manner as the above-mentioned extraction operation.

The frozen dessert manufacturing apparatus of the present invention has been described using a shake manufacturing apparatus typified by ice cream shakes as an example, but the present invention can also be used to make ice cream shakes similar to ice cream shakes, such as soft ice cream, etc., without departing from the spirit of the present invention. It goes without saying that the present invention can be applied to any type of frozen dessert manufacturing apparatus.

(G) Effects of the Invention According to the frozen dessert manufacturing apparatus provided in the present invention, the front cooling system for cooling the front part of the cooling chamber and the rear cooling system for cooling the rear part of the cooling chamber are independently configured. The cooling operation of the front cooling system is independently controlled by a front cooling system control means including a front temperature detection element that detects the temperature of the frozen dessert base in the front part of the cooling system, and the cooling operation of the rear cooling system is also controlled. By independently controlling the rear cooling system control means, which includes a rear temperature sensing element that detects the temperature of the frozen dessert base at the rear of the chamber, the mix supplied to the cooling chamber is substantially uniform throughout the entire area of the cooling chamber.
It is possible to finish the frozen dessert base with the ideal hardness in a short time, especially when replenishing a new mix to the rear of the cooling chamber by intermittent or continuous frozen dessert extraction. This has an extremely excellent advantage of being able to maintain the frozen dessert base in the front area of the cooling chamber at an ideal hardness.

Further, according to the series of supply systems of the present invention, the syrup in the syrup tank selected from among the plurality of syrup tanks for feeding the mix in the mix tank to the cooling room and storing plural types of syrup individually. Since it is only necessary to prepare one compressed gas supply source in order to feed the raw material to the mixing chamber, this method also has the advantage of significantly simplifying the raw material supply system.

[Brief explanation of drawings]

Figure 1 is a diagram of the raw material supply system of an ice cream shake manufacturing apparatus that implements the present invention, Figure 2 is the same (cooling system diagram), and Figure 3 is a schematic layout diagram showing the internal configuration of the ice cream shake manufacturing apparatus. , FIG. 4 is a side cross-sectional view showing the extractor, FIG. 5 is a partially sectional front view of the extractor, FIG. 6 is a general electrical circuit diagram of the present invention, and FIG. 7 is an electrical diagram of the main parts of the present invention. It is a circuit diagram. (1)...Pextank, (2A), (2B)
, (2C), (2D)... syrup tank, (3)...
...Cooling room, (5)...Compressed gas tank, I...
・Mix supply pipe, (14A)...Inflow port, (1
8A), (18B), (18C), (18D)...Syrup supply pipe, (To)...Front compressor, (Found)...Front cooling solenoid valve, (To)...Front Part evaporation pipe, (to)...Rear compressor, (A...Rear cooling solenoid valve, (44)...Rear evaporation pipe, 54)
...Front thermistor, Kasumi...Rear thermistor, (
To)...mixing chamber, (95/L)...extraction port,
(Mon)...Front cooling system control circuit, (129
)... Rear cooling system control circuit. Applicant Sanyo Electric Co., Ltd. and one other representative Patent attorney Shizuo Sano Figure 2 Figure 3M 14 Figure fJS Figure

Claims (1)

[Claims] 1. A mix tank for storing a mix, a plurality of syrup tanks for individually storing a plurality of types of syrup, and one cooling room for cooling and stirring the mix supplied from the rear inlet to make a frozen dessert base. a mixing chamber equipped with an extraction port for stirring and mixing the frozen dessert base in the front part of the cooling chamber and the arbitrarily selected syrup in the syrup tank to finally produce a frozen dessert; a compressed gas supply source for feeding the chamber and for feeding the selected syrup to the mixing chamber; a front cooling system for cooling the front part of the cooling chamber; and a rear part of the cooling chamber. and a front cooling system that independently controls the operation of the front cooling system, including a front temperature detection element that directly or indirectly detects the temperature of the frozen dessert base at the front of the cooling chamber. A system control means, and a rear cooling system control means that includes a rear temperature detection element that directly or indirectly detects the frozen dessert base temperature at the rear of the cooling chamber and independently controls the operation of the rear cooling system. Frozen dessert manufacturing equipment.