JPS61282041A - Apparatus for washing and sterilizing ice cream freezer - Google Patents

Abstract

PURPOSE:To carry out the hygienic maintenance of ice cream freezer, by using a heating means for the thermal sterilization of an ice cream mix cooled in semi-frozen state in a cooling chamber and using hot water supplied from a hot water supplying apparatus for the cleaning and sterilization of the channel in a dispenser. CONSTITUTION:A dispenser 6 is attached in front of the cooling chamber 5 for the cooling of liquid ice cream mix, and the ice cream mix cooled in semi- frozen state is supplied by operating an opening means thereby opening the channel of the dispenser 6. In the above ice cream freezer, the liquid ice cream mix is heated and sterilized with the electric heater 101 and a heating means such as the hot gas heating means of the freezing system composed of the front compressor 25, the post compressor 33, the front hot gas solenoid valve 46, the post hot gas solenoid valve 48, etc. During the sterilization with the above heating means, hot water is supplied by the hot water-supplying means to the channel in the dispenser to effect the cleaning and sterilization of the channel. The ice cream freezer can be maintainedin hygienic state by this process.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device for producing frozen desserts, such as ice cream shakes and soft serve ice creams, and in particular, the invention relates to a device for manufacturing frozen desserts, such as ice cream shakes and soft serve ice creams. This relates to a sterilizer.

(b) Conventional technology As a conventional cleaning device for frozen dessert manufacturing equipment, for example,
Publication No. 4-37223 discloses that tap water is heated to a high temperature in a tank with temperature and water volume regulation within the machine body, and a predetermined amount of the hot water is supplied to the raw material tank and freezing cylinder during cleaning and sterilization, and automatic regulation is performed. A method for cleaning and sterilizing a continuous soft ice cream manufacturing machine is disclosed, which comprises opening a gate plunger of a product takeout device to drain hot water after cleaning and sterilization after the required time has elapsed.

(c) Problems to be Solved by the Invention According to this prior art, the soft serve ice cream in the freezing cylinder is collected before the day's sales start or after the day's sales end, and then the raw materials are collected. The tank and freezing cylinder are cleaned and sterilized with boiling water, and by opening the gate plunger to drain the hot water after cleaning and sterilization, it is somewhat expected that the soft serve ice cream that has adhered to the dispenser will be washed away at the same time. . However, the extractor is the part that requires the most attention in terms of hygiene management, and when draining dirty hot water from the extractor, it is impossible to expect a sufficient cleaning effect from the extractor. It's not a thing.

Therefore, the present invention provides a cleaning device that cleans the passage of the extractor without collecting the cooled frozen dessert concentrate from the cooling chamber,
Further, the present invention provides a sterilization device capable of sterilizing a cooling chamber and a frozen dessert stock solution in the cooling chamber.

(b) Means for Solving the Problems The present invention provides a take-out device at the front of a cooling chamber for cooling the frozen dessert concentrate, and opens a passage formed in the take-out device by operating an opening/closing means to cool the frozen dessert into a semi-frozen state. In a frozen dessert manufacturing apparatus for externally supplying frozen dessert concentrate, a heating means is provided for heating and sterilizing the frozen dessert concentrate, and a passageway from the opening/closing means to the takeout port is provided during the sterilization operation by the heating means. This is a cleaning and sterilizing device for a frozen dessert manufacturing device, which is equipped with a hot water supply means for supplying hot water to clean the passage.

(*) Effect According to the above configuration, the electric heating means heat-sterilizes the cooling chamber and also heat-sterilizes the semi-frozen frozen dessert stock solution cooled in the cooling chamber. In parallel with this sterilization operation, the hot water supply means can force-feed hot water to a passage formed in the take-out device, so that the passage from the opening/closing means to the take-out port can be cleaned and sterilized by the hot water.

(F) Example An example of the present invention will be described below using an ice cream shake manufacturing apparatus. Figure 1 shows a system configuration diagram equipped with the device of the present invention. (1) is a mix tank that stores liquid ice cream mix, and the top surface is covered with a removable lid (IA) to replenish the mix. The room will be closed.

(2) is an electrode type mix out detection device that detects the mix amount in the mix tank (1), (3A>, (3B),
(3C) l (3D) is a syrup tank that stores different liquid syrups such as chocolate, strawberry, vanilla, yogurt, etc.
〉 As shown in Fig.
) are installed in all syrup tanks. (5
) is a cooling chamber equipped with a removably frozen dessert dispenser (6) at the front and a mix inlet (5A) at the rear. (
7) is a compressed gas cylinder that stores compressed gas such as carbon dioxide gas or nitrogen gas.

The gas cylinder (7) is equipped with a primary pressure regulator (8) at its outlet, and the other end of the gas phase pipe (9), which has one end connected to the outlet of the regulator (8), is equipped with a secondary pressure regulator (8).
10) to the branch joint (11). Four syrup pressure pipes (1) are connected to the four outlets of the branch joint (11).
Connect one end of 2A), (12B>, (12G) and (12D), and connect the other end with a check valve (13A), (13B),
(13C) and (13D) are connected to the syrup tank (3).
Connect to A), (3B), (3c) and (3D). Syrup tanks (3A), (3B), (3C) and (3D
) extending from the bottom of the syrup supply pipe (14A), (1
4B>, (14C), and (14D) are connected to the extractor (6), and there are needle valves (15A>, (15B), (15C), and (15C) on the upstream side for adjusting the syrup flow rate.
Connect the syrup supply solenoid valve (16D) to the downstream side.
A), (16B), (16C) and (16D) are connected.

Meanwhile, the mix in the mix tank (1) is cooled.

A mix suction pipe (18) whose other end opens near the bottom of the mix tank (1) is connected to the suction side of the pump device (17) for supplying to the chamber (5), and the other end is connected to the discharge side of the pump device (17). A mix supply pipe (19) is connected to the rear inlet (5A) of the cooling chamber (5), and the pump device (17)
The drive motor (17A) is controlled by a pressure detection device (20) that is connected to the mix supply pipe (19) and indirectly detects the amount of mix in the cooling chamber (5) by pressure. Furthermore, the air introduction pipe (21) that branches off from the mix suction pipe (18) and opens to the atmosphere is important for mixing air into the mix and producing an appropriate overrun. Note that (22) in the figure is a water heater for cleaning and sterilizing the inside of the extractor (6), and the hot water supply pipe (22A) is connected to the extractor (6) by using a connector (23). Normally, the flow of hot water is shut off by a hot water supply solenoid valve (24).

Next, referring to FIG. 2, a systemized cooling system including cooling means for cooling the cooling chamber (5) will be described. The cooling system of the embodiment includes a front compressor (25), a rear air-cooled condenser (26), a double-pipe front water-cooled condenser (27) in which water passes through the inner tube and refrigerant passes through the outer tube (although the groups are not separated), and a front receiver. -Tank (28), pre-cooling solenoid valve (29), pre-expansion valve used as a pressure reducing device (
30), pre-evaporation vibrator (31) and pre-evaporation vibrator (31)
32) connected in a ring, a rear air-cooled condenser (33), a rear air-cooled condenser (34), and a rear water-cooled condenser (35) having the same configuration as the front water-cooled condenser (27).
), Rear receiver tank (36〉, Rear cooling electric set valve (37)
), a post-expansion valve (38) employed as a pressure reducing device, a post-evaporation pipe (39), and a post-accumulator (40) connected in an annular manner to form a post-cooling system.

Therefore, the pre-evaporation vibe (31) in the pre-cooling system
is wound around the front outer circumference of the cooling chamber (5), and a post-evaporation pipe (39) in the post-cooling system is wound around the rear outer circumference of the cooling chamber (5). As a result, the evaporation pipe can be wrapped around almost the entire width of the cooling chamber (5), the front part of the cooling chamber (5) is independently cooled by the pre-cooling system, and the rear part of the cooling chamber (5) is cooled by the post-cooling system. Can be cooled independently. In addition, in the embodiment, the winding area of the post-evaporation pipe (39) is set to be approximately twice the winding area of the front evaporation vibrator (31), but this is due to the fact that the winding area of the post-evaporation pipe (39) is approximately twice that of the winding area of the front evaporation vibrator (31). The proportions are determined in consideration of the capacity of It may be a configuration. Furthermore, the present invention is not limited to the vibrator winding method, but any method that constitutes a pre-evaporation region and a post-evaporation region may be used.

In addition, as devices that can be configured in relation to the pre-cooling system, a pre-air cooling condenser (26) and a pre-water cooling condenser (26) are also available.
7), and a front water saving valve (42) that responds to the condensing pressure and opens when the pressure reaches a predetermined high pressure. A rear blower (43) that cools both the air-cooled condenser (34) and the rear water-cooled condenser (35), and a rear water-saving valve (44)
It is equipped with Furthermore, the pre-cooling system has one end connected between the pre-compressor (25) and the pre-air cooling condenser (26), and the other end connected between the pre-expansion valve (30) and the pre-evaporating vibrator (31).
a front bypass pipe (45) connected to the inlet side of the front hot gas solenoid valve (45) connected to the bypass pipe (45);
6) is attached to the post cooling system, one end is connected between the post air cooler (33) and the post air cooling condenser (34), and the other end is connected to the post expansion valve (38) and the inlet of the post evaporation pipe (39). a bypass pipe (47) connected to the side, and a hot gas solenoid valve (48) connected to the bypass pipe (47).
) can be added. And these bypass pipes (45)
The configuration of (47) and solenoid valves (46) and (48) is as follows:
It is effectively used during sterilization, which will be described later.

The cooling operation of the pre-cooling system is independently controlled based on the temperature-sensing operation of a pre-temperature detecting element (49) using, for example, a thermistor, and the post-cooling system is controlled by a post-temperature detecting element (50) using, for example, a thermistor. The cooling operation is independently controlled based on the temperature sensing operation of (50) is located in a copper tube (52) attached to the outer surface of the rear end of the cooling chamber (5).

The embodiment employs an indirect temperature detection method in which the front thermistor (49) and rear thermistor (50) are attached to the outer surface of the cooling chamber (5) to sense the mix temperature inside the cooling chamber (5). However, it is also possible to adopt a direct temperature detection method in which these are placed at the front and rear ends of the cooling chamber (5).

Next, the structure of the extractor (6) will be explained in detail based on FIGS. 3, 4, and 5. A removable resin cover (78) that closes the front opening of the cooling chamber (5) has a cylindrical vertical hole (79) that is open at both ends, and a cylindrical vertical hole (79) that closes the front opening of the cooling chamber (5). A cylindrical horizontal hole (80) extending in the direction and having an open end communicating with the cooling chamber (5) is formed. A bearing plate (82) having an outlet (81) formed at the bottom thereof is screwed onto the edge of the side opening of the cooling chamber (5) of this side hole (80), and the bearing plate (82) has an umbrella-shaped shape. A movable shaft (84) extending rearward from the pulp (83) is slidably supported. Also, between the bearing plate (82) and the pulp (83) is a coil spring (84) surrounding the movable shaft (84). 85),
Normally, the pulp (83) is pressed against a step (86) formed in the middle of the horizontal hole (80), and the pulp (83) is transferred to the horizontal hole (80).
) to close the room. In addition, pulp (83)
is mainly constructed of stainless steel, but there is a stepped part (8
6) The part that is pressed is made of silicone material to improve sealing performance.

On the other hand, the pulp (83) resists the coil spring (85).
The mechanism for moving the lever rearward and opening the horizontal hole (80) is a slideable operating rod (87) whose rear end is in contact with the tip of the pulp (83) and whose front end projects forward through the cover (78). ), and a rotation fulcrum (88) whose lower part is rotatably connected to the front part of the operating rod (87) to allow the operating rod (87) to reciprocate, and whose upper part is connected to the cover (78). A plunger (9) that connects a lever (89) with a lever (89) and an actuating pin (90) perpendicular to the upper rear surface of the lever (89).
1A) and a return spring (92) for returning the lever (89) to its normal position. According to this configuration, pulp (83
) can be opened and closed automatically following the operation of the solenoid device (91), and can also be opened and closed by manually operating the lever (89).

In addition, the lower part of the vertical hole (82) has a lower end opening 93.
A) is used as the mixing chamber (93). A stirring blade (94) formed with a large number of through holes (94A) is disposed in the mixing chamber (93), and this stirring blade (94) has a vertical hole (8
2) A sliding bearing (95) removably screwed onto the top of the
The rotary shaft (96) extends upward through the rotary shaft (96). On the other hand, the upper end of the rotating shaft (96) can be detachably connected to a flexible cable (98) passing inside the protective tube (97), and the end of this cable (98) can be connected to a motor to transmit rotation. It is something that

Furthermore, as a configuration other than the extractor (6), a cover (78
The cylindrical bearing (100) screwed onto the rear surface of the stirrer (68
). In addition, the evaporation pipe (31) and (
A planar electric heater (101) wound around the outer surface of the cooling chamber (39) is prepared for sterilizing the cooling chamber (5) and the mix supplied to the cooling chamber (5), which will be described later. By the way, as mentioned before, the syrup supply pipes (14A), (14B), (14C) and (14D) connected to the extractor (6) pass through the internal space of the main body (53) and are connected to the extractor (6).
3) Flexible transparent tubes (14A1), (14B1), (14C1) and (1
4D1>. This transparent tube (14A1> to (14D1) has a nozzle (L4A2) at the end, (
14B2), (14C2) and (14D2) in the mixing chamber (
93>, it is connected to the inner part of the iron base (93) so as to protrude, and the other end is connected to a self-sealing coupling (14A3).
), (1483), (14C3) and (14D3). On the other hand, syrup supply pipes (14A) to (14D)
Self-sealing couplings (14A4), (14B4), (
14C4) and (14D4). Then, connect the self-sealing couplings (14A3) to (14D3) on the side of the transparent pipes (14A1) to (14D1) to the syrup supply pipe (14D1).
A) to (14D) side self-sealing coupling (14A4
) to (14D4), it is possible to establish four syrup passages between the syrup tanks (3A) to (3D) and the mixing chamber (93).

Next, the water heater (22) will be described in detail based on FIG. The embodiment adopts an instantaneous water heating system, and has a heating pipe (10) equipped with a sheathed heater (102) concentrically.
3) Both ends can be sealed liquid-tight. This heating pipe (
A water supply pipe (104) connected to the inlet side end of the water supply pipe (104) guides tap water to the heating vibrator (103).
) includes, from the upstream side, a check valve (105), a safety valve (106) that operates when the pressure inside the pipe increases abnormally, a constant flow valve (107) to flow a fixed amount of water, and a heater (107) that detects the flow of water. Flow switch (102) that controls ON/OFF of
108) are connected sequentially. Also heating pipe (103
) The hot water supply pipe (22A) can be connected to the outlet side end of
There is a hot water temperature sensor (109) that detects the hot water temperature and controls the energization rate of the heater (102), and a manual water removal pulp (
110) and the hot water supply solenoid valve (24) are connected in sequence. (111) forces the heater (102) to turn off when the hot water temperature rises abnormally due to a failure of the hot water temperature sensor (109), etc.
This is a thermostat that prevents overheating.

Such a water heater (22) is equipped with a takeout device (6) as described above.
When cleaning and sterilizing the inside of the machine, it can be connected to the extractor (6) by using the connector (23). This connector (
23) has an entrance part (23E) at one end as shown in Figure 7.
1), and an outlet (23A1) extending upwardly from the passageway (23E) at an appropriate distance from the passageway (23E>) and an outlet (23A1
), a first vertical passageway (23A) with an outlet (23B1)
A second vertical passage (23B) having an outlet (23C1), a third vertical passage (23C) having an outlet (23C1), and a fourth vertical passage (23D) having an outlet (23D1) are formed. 23A) to (23D>), transparent tubes (14A1) to (14D
A self-sealing coupling (23) connectable to the self-sealing couplings (14A3) to (14D3) provided at the end of 1).
A2), (23B2), (23C2) and (23D2)
, and a main body (53
) The hot water supply pipe (22A) fixed to the front plate (53A) of
) is provided with a self-sealing coupling (112A) connectable to the self-sealing coupling (22A1) at the end.

Next, the configuration of the sterilization circuit of the present invention and the cleaning circuit that controls the hot water supply device (22) will be explained with reference to FIG. (11
5) is an automatic return type switch, (116) is a switch (1
(117) is a latch circuit that has input ports (D and (D,) and corresponding output ports (Q,) and (Q,). When the I″H″ level signal is input to the input port, the signal is latched and the latched I″H″ level signal is output from the corresponding output port, and the signal that was latched until then is This is to be canceled.

(193) is the front thermistor (49), the resistor (150)
) and (151) as positive inputs,
Resistor (194) and variable resistor (195) for adjusting the set temperature
(196) is an AND circuit that inputs the output of the humparator (193) and the output generated at the output port (Qt) of the latch circuit (117), respectively. The output of the AND circuit (196) is used as a set input, and the output port (
RS flip-flop (199) that uses the output generated in Q, ) as a reset input via an inverter (19B)
is an AND circuit that inputs the 6 outputs of the flip-flop (197) and the output of the output port (Q, ), and the output is sent to the latch circuit (117) via an inverter (<124).
The output port of (connected to the other input of the NAND circuit (125) which has one input as the output of (127) is connected to the input of
The output of the timer circuit (127) is sent to the latch circuit (117).
) is connected to the input port (D, ). (200) is a transistor whose base is connected to the output port (Q, ), (
201) is a fourth relay connected to the collector line of the transistor (200), and a normally open relay contact (201) connected in series with the stirring motor (73) for the stirrer (68).
01A). (202) is an AND circuit (199)
The transistor (203) is connected to the collector line of the transistor (202), and the normally open relay contact (203A) is connected in series with the front compressor (25). Normally open relay contact <20 connected in series with rear compressor (33)
3B) and a normally open relay contact (203C) connected in series with the parallel circuit of the front hot gas solenoid valve (46) and the rear hot gas solenoid valve (48). (204) mainly consists of an amplifier, an oscillator, a comparator, etc., and the front thermistor (
49), a pulse width modulation circuit that finally outputs a pulse corresponding to the fluctuating voltage generated in the resistors (150) and (151), (205) is the output of the pulse width modulation circuit (204) and a latch circuit (117) (206) is a photocoupler consisting of a light emitting element (206A) and a light receiving element (206B) that emit light when the output of the AND circuit (205) is rH. , (207) is a transistor that turns off when the light receiving element (206B) is turned on, and (208) is a transistor (
207) is a thyristor that is triggered and turned ON when OFF, (209) is a rectifier, (210) is a triac,
(101) is the above-mentioned planar electric heater for heating the cooling chamber (5) connected in series with the triac (210).

Further, the output of the NAND circuit (125) is connected to an inverter (
126), and further starts with an "L" level input signal via the inverter (134), and after the start, the signal is T.

A timer circuit (1
35), and is connected to the reset input of the timer circuit (1
35) and the output of the inverter (126) are respectively input to an AND circuit (136). The OR circuit (137) is the output of the AND circuit (136) and the output of the AND circuit (136).
The output of the integrator circuit (149
The output of the OR circuit (137) is connected to the base of the transistor (138), and the collector line thereof is connected to the first relay (139). The first relay (139) has a normally open relay contact (139A) connected in series with the hot water supply solenoid valve (24).

-・Water temperature sensor using a thermistor (109)
The unbalanced voltage generated in the bridge circuit including
0) and can be input to the plus input terminal of the switching circuit (141). The output of the switching circuit (141) and the output of the AND circuit (136) are respectively input to an AND circuit (142).

(143) means that the output of the AND circuit (142) is r
A photocoupler consisting of a light-emitting element (143A) that emits light when the light is "H" and a light-receiving element (143B>), (144) is a transistor that is turned off when the light-receiving element (143B) is turned on, and (145) is triggered when the transistor (144) is turned off. (146) is a rectifier, (147) is a triac, and (102) is the water heater (22) connected in series with the triac (147).
) is a sheathed heater.

Next, the present invention will be explained in detail based on the above configuration. First, with power applied to the entire system, turn on the pump device (
17) is activated, the mix in the mix tank (1) is sucked in through the suction pipe (18), and at this time the air introduction pipe (2
1) Mix supply pipe (
19) and is supplied to the cooling chamber (5) from the rear inlet (5A) of the cooling chamber (5). When a predetermined amount of the mix is supplied to the cooling chamber (5), the pump device (17) is stopped to end the supply of the mix.

Thereafter, when the pre-cooling system and the post-cooling system are activated to cool down the mix supplied to the cooling chamber (5), the mix gradually increases its viscosity to form a semi-frozen ice cream shake base. Finished as. Note that a detailed explanation of the operation of the cooling system is omitted because it is not the gist of the present invention.

Next, the operation of taking out the ice cream shake that is finally made by mixing the shake base finished in the cooling chamber (5) and the syrup as described above will be explained below. For example, if you want a chocolate-flavored ice cream shake, press the switch labeled "chocolate," and the solenoid device (9) as shown in FIG.
1) is excited, the plunger (91A) is fully attracted, and the operating bottle (90) pulls the lever (89) forward. Then, the lever (89) rotates about the fulcrum (88) and moves the operating rod (87) toward the cooling chamber (5). Due to this movement of the operating rod (87), the valve (83) is pushed backward against the coil spring (85) and opens the side hole (80).Thereby, the shake base in the cooling chamber (5) is moved into the agitator. (68) from the outlet (81) to the side hole (80
) to the mixing chamber (93). At the same time,
The syrup supply solenoid valve (15A) opens and the gas phase pipe (9)
, syrup tank (3) via the syrup pressure pipe (12A)
A) by suppressing the compressed gas in the tank (
The chocolate syrup in 3A) is fed to the syrup supply pipe (1
4A), the nozzle (14A2) via the transparent tube (14A1>
) to the mixing chamber (93).

In this way, the shake base and chocolate syrup supplied to the mixing chamber (93) are stirred and mixed at an extremely high speed by the stirring blade (94) linked to the drive motor, resulting in a chocolate-flavored ice cream shake, which is then taken out. It is continuously extracted from the mouth (93A) into the cup (69).

Stopping the extraction of ice cream shake can be done by switch operation, measurement, time, etc., but in any case, when a stop signal is issued, the syrup supply solenoid valve (15A) is closed and the mixing chamber (93 ) Stop feeding chocolate syrup to Subsequently, the excitation to the solenoid device (91) is released and the lever (89) returns to its normal position as shown in Figure 3 by the action of the return spring (92), and the operating rod (87) follows this. Return to forward position. As a result, the valve (83) is pressed against the step (86) of the side hole (80) by the fill spring (85), closing the side hole (80).

The above has explained the operation for taking out a chocolate-flavored ice cream shake, but if you want a strawberry-flavored ice cream shake, the syrup supply solenoid valve (15B) must be fully opened and you want a vanilla-flavored ice cream shake. Nara syrup supply solenoid valve (15C)
is opened, and if a yogurt-flavored ice cream shake is desired, the syrup supply solenoid valve (15D) can be opened by operating the corresponding switch.

In the above-described take-out operation, when the shake base in the cooling chamber (5) is sent to the mixing chamber (93), the pressure detection device (20) detects the pressure drop in the cooling chamber (5), and the pump device detects the pressure drop in the cooling chamber (5). (17) is activated, and the mix is replenished into the cooling chamber (5).

Next, the sterilization operation and cleaning operation of the present invention will be explained. In this case, first, the syrup supply pipe (14A) and the transparent pipe (14A1), the syrup supply pipe (14B) and the transparent pipe (14B1), and the syrup supply pipe (14C) and the transparent pipe (14A1) in the state shown in FIGS. 3 and 4, 14C1), syrup supply pipe (
14D) and the transparent tube (14D1).

Also, remove the rotating shaft (96) and remove the stirring blade (94).
from the mixing chamber (93), and then remove the sliding bearing (95).
Remove. These removed parts can be cleaned and stored separately.

After that, as shown in FIGS. 10 and 11, a transparent tube (
Connectors (14A1) to (14D1) prepared with self-sealing couplings (14A3) to (14D3) at the ends
Self-sealing coupling (23A2) provided on the outlet side of 23)
) to (23D2), and further connect to the connector (23D2).
Connect the self-sealing coupling (112A) provided at the end of the connecting pipe (112) extending from the inlet side of the hot water supply pipe (2) to the hot water supply pipe (2).
Self-sealing coupling (22A1) provided at the end of 2A)
Connect to. At the outlet of the mixing chamber (93), there is a small-diameter hot water discharge passage (2) that communicates the inside and outside of the mixing chamber (93).
Attach the cap (235) formed with 34).

After completing the above operations, when the switch (115) is pressed, an output pulse is generated from the switch circuit (116) and input to the input port (D,) of the latch circuit (117). Then, "H4" is output from the output port (Qt) of the latch circuit (117) corresponding to this, and the cooling operation that was being performed until then is stopped and the sterilization operation is started. That is,
In response to the output rH of the output boat (Ql), the transistor (200') is turned on, and the fourth relay (201) is energized to close the normally open contact (201A). This drives the stirring motor (73) and rotates the stirrer (68). The rotation of this stirrer (68) continues until the output rH of the output boat (Q,) is cut off.On the other hand, since the mix temperature immediately after the start of sterilization operation is naturally low, the front thermistor (4
9) is large, the positive input voltage of the comparator (193) is low, and since this is lower than the negative input voltage, the output pressure of the comparator (193) is "L".
”. This allows flip-flop (197)
The output “L” of the AND circuit (196) is input to the set input terminal of
" has been input, and the inverter (198) is connected to the reset terminal.
Since the inverted output "L" of the output port (Q) is inputted by , the output voltage of the flip-flop (197) is "
H”. The output of the AND circuit (199) which inputs this output and the output of the output boat (Q,) becomes rHJ, which turns on the transistor (202), and the fifth
The relay (203) is energized and the normally open contacts (203A), (
203B> and (203C) are closed. Therefore, the front and rear compressors (25) and (33) are operated, and the front and rear hot gas solenoid valves (46) and (48) are opened.

Therefore, high-temperature refrigerant gas, that is, hot gas, passes through the bypass pipe (
The evaporating vibes (31) and (45) and (47) pass through
39), and is circulated to the cooling room (5) and further to the cooling room (5).
Heat the mix inside.

On the other hand, immediately after the sterilization operation starts, the mix temperature is the lowest, so the input voltage of the pulse width modulation circuit (204) is extremely low.
The "H" output pulse width of the modulation circuit (204) becomes longer. The output of the AND circuit (205') that receives this output and the output of the output boat (Q,) becomes rH, and the light emitting element (
A current flows through the element (206A), the element (206A) emits light, and the light receiving element (206B) is turned on. As a result, the transistor (207) is turned off, so the transistor (207) is turned off.
The flefter voltage of 207) becomes rH, and Cyrisk (208) is triggered and turned ON. Sairisk (2
08) turns on, the triac (210) also turns ONL.
AC200V is applied to the planar heater (101), and the heater (101) generates heat.

As described above, when the switch (115) is pressed, the hot gas is circulated through the evaporating vibrator (31) and (39), and the heater (101) is energized, and inside the cooling chamber (5) and the iron base (5). Mix with hot gas and heater (101)
Then, a sterilization operation is started in which heat sterilization is performed by stirring heat generated by the rotation of the stirrer (68).

As the sterilization operation progresses, the mix temperature gradually rises, and when the front thermistor (49) detects a predetermined sterilization temperature (for example, set at 75°C, which does not cause burnt odor in the embodiment), the comparator (193) ) becomes higher than the negative input voltage, and the comparator (193)
The output of the AND circuit (196) changes from "L" to rH.Then, the output of the AND circuit (196) becomes rH, and this is input to the set input terminal of the flip-flop (197), so the output of the flip-flop (197) is r L , so the output of the AND circuit (199) is “L”
As a result, the transistor (202) is turned off, the excitation of the fifth relay (203) is released, and the normally open contact (203A) is turned off.
, (203B) and (203C) are opened. Therefore,
The operation of the front and rear compressors (25) and (33) is stopped, and the front and rear hot gas solenoid valves (46) and (48) are stopped.
) is also closed. In this manner, when the mix temperature reaches the predetermined sterilization temperature, heating of the mix with hot gas is first terminated. However, the heating of the mix by the heater (101) continues based on the output of the pulse width 13 circuit (204') unless the output rH of the output boat (Qt), which is one input of the AND circuit (205), is cut off. be done.

That is, as the mix temperature approaches the sterilization temperature, the input voltage of the pulse width modulation circuit (204) increases, and as a result, the interval between the output pulses rH of the modulation circuit (204) gradually becomes shorter. The interval between ``L'' and ``L'' gradually becomes longer, and when the modulation circuit (204) has finished outputting ``H'', the heater (101) is energized as described above, and 1 from the modulation circuit (204) When “L” is output, the output of the AND circuit (205) becomes r L J, and the light emitting element (
206A) does not emit light and the light receiving element (206B) is turned off. As a result, the transistor (207) turns on, so its collector voltage becomes r L , and the silicon risk (
208) is 0FFL, and further, the triac (210) is turned off and the power supply to the heater (101) is cut off. In this way, the mix temperature is maintained at the sterilization temperature by changing the energization rate of the heater (101) based on the mix temperature.

On the other hand, when the predetermined sterilization temperature is reached, the AND circuit (19
The output 1"L" of 9) is input to the inverter (124), and the NAND circuit (1
25) becomes "L", and the timer circuit (127) that receives this output starts. Furthermore, the NAND circuit (
The output "L" of 125) is inverted by the inverter (126), and further inverted by the inverter (134) to become "L".
A signal at the "L" level is input to the timer circuit (135). The timer circuit (135) started by this repeatedly outputs "L" for <T1 time (30 seconds) and rHJ for T1 time (3 minutes) as described above. This timer circuit (1
The output of the AND circuit (136) that inputs the output of the inverter (126) is the output of the timer circuit (1
The output is synchronized with 35). Therefore, now the AND circuit (
When r H is output from 136), OR circuit <137
), the transistor (138) is ONL, the first relay (139) is energized, the normally open contact (139A) is closed, and the magnetic valve (24) opens the hot water supply 1.

This allows the water supply pipe (104) to be connected to the heating pipe (10
3) When the flow switch (108) is turned on, the tap water passes through
Sheathed heater (102) that can be energized under the condition that
), then passes through the hot water supply pipe (22A), through the connecting pipe (112), through the funector (23), and through the transparent pipes (14A1), (14AI), (14C1) and (14D1). Each nozzle (14A2), (14
B2), (14CZ) and (14D2) to the mixing chamber (9
3) Can be released internally. The boiling water discharged into the mixing chamber (93) cleans and sterilizes the mixing chamber (93) and closes the cap (23).
The hot water is drained from the drain passage (234) of 5) to a suitable drain means, but because this passage (234) is narrow, the hot water is sufficiently drained into the mixing chamber (93) and is drained from the upper end opening of the vertical hole (79). will also overflow and therefore the mixing chamber (
93), the vertical hole (79), and even the horizontal hole (80) up to the valve (83) are thoroughly cleaned and sterilized.

On the other hand, the hot water temperature is controlled to be constant based on the hot water temperature sensor (109), and the hot water temperature is set to the set temperature (75 in the example).
°C setting), the output tJE of the amplifier (140)
becomes lower than the negative input voltage of the comparator (141), and the output of the comparator (141) becomes "L".

An AND circuit (1
Since the output of the AND circuit (142) inputting the outputs of 36) is r L , the light emitting element (143A) does not emit light and the light receiving element (143B) is 0FFL.

This turns on the transistor (144), which turns the thyristor (145) and further the triac (147) to 0FFt, and turns off the sheathed heater (102).

When the water temperature drops slightly below the set temperature again, the amplifier (140
) becomes higher than the negative input voltage of the comparator (141), and the output of the comparator (141) becomes r
It becomes H. The output of the AND circuit (142) which inputs this output and the output of the AND circuit (136) becomes "H", so the light emitting element (143A) emits light and the light receiving element (
143B> turns on and turns off the transistor (144)
As a result, thyristor (145), triac (
147) are turned on one after another, and the sheathed heater (102) is turned on.
do. In this way, the hot water supply temperature is controlled to a substantially constant temperature suitable for cleaning and sterilization.

Then, after the T1 time has elapsed and the 11th hour has passed, when the output of the AND circuit (136) becomes l''L'', the output of the AND circuit (1
42) becomes r L , and at this point the sheathed heater (102) is 0FFt, cy > H-4 (102
) continues for T+ time. In addition, the OR circuit (13
After a delay time (several seconds) caused by the integrating circuit (149), the output of 7) becomes r L J and turns the transistor (138) into 0.
FFL, As a result, the first relay (139) is de-energized, the normally open contact (189A) is opened, and the hot water supply solenoid valve (
24) closes. Such a delay in the hot water supply electromagnetic valve (24) is effective in preventing the danger of water heated by the residual heat of the heater (102) turning into steam and being sent forcefully to the mixing chamber (93).

While repeating the above cleaning operation, the heater (101
) alone continues the sterilization operation of the mix in the cooling chamber (5).

When the timer circuit (127) elapses a predetermined time, the timer circuit (127) outputs rH, and inputs it to the input port (D,) of the latch circuit (117).

Then, the output of the output port (Q, ) of the latch circuit (117) becomes "H", and the output of the output port <ox> becomes r
L.

becomes. Therefore, the sterilizing circuit completes the sterilizing operation and inputs the output of the output capo (Ql) to the NAND circuit (1
The output of 25) becomes rH and is sent to the timer circuit (127).
At the same time, the output rH of this NAND circuit (125) is inverted by the inverter (126) and becomes "L".
The cleaning circuit also completes the cleaning operation.

When the sterilization and cleaning operations are completed as described above, the output rH of the output port (Qs) of the latch circuit (117) is
Accordingly, the sterilized mix in the cooling chamber (5) is kept cool by the cold storage operation in which the mix is appropriately cooled at a high temperature by the cooling operation.

The embodiment of the present invention described above uses both an electric heater and hot gas as heating means to sterilize the frozen dessert stock solution, that is, the mix. In addition, the hot water supply device may be of a hot water storage type in addition to an instantaneous boiling type.

Furthermore, although the cleaning and sterilization device for a frozen dessert manufacturing device of the present invention has been described using an ice cream shake as an example, the present invention can also be applied to a manufacturing device similar to an ice cream shake, such as soft ice cream.

(G) Effects of the Invention As described above, the present invention allows the frozen dessert stock solution that has been cooled to a semi-frozen state in the cooling chamber to be sterilized by heating as necessary using a heating means such as an electric heater or hot gas. During this sterilization operation, the passage inside the extractor from the opening/closing means to the outlet can be washed and sterilized in parallel with hot water supplied from the water heater, and the extractor can be managed hygienically. It offers excellent advantages.

[Brief explanation of drawings]

Figure 1 is a system configuration diagram of an ice cream shake manufacturing apparatus equipped with the cleaning and sterilizing device of the present invention, Figure 2 is a configuration diagram of the cooling system, and Figure 3 is a partially cutaway view of the front part of the cooling chamber and the extractor. FIG. 4 is a side sectional view of the entire section, FIG. 5 is a partially omitted front sectional view of the extractor, FIG. 6 is a specific configuration diagram of the water heater, and FIG. 7 is a side sectional view of the same. is a sectional view of the connector used when cleaning the dispenser, Figure 8 is a cleaning/sterilization circuit diagram, Figure 9 is a side sectional view of the dispenser showing the state in which frozen desserts are being taken out, and Figure 10 is the cleaning state of the dispenser. FIG. 11 is a partial front view showing the same, and FIG. 11 is a partial side view showing the same. (5)...Cooling chamber, (su)...Ejector, (2
2)...Water heater, (25)...Pre-compressor,
(33)... Rear compressor, (46)... Front hot gas solenoid valve, (48)... Rear hot gas solenoid valve,
(79)...Vertical hole, (80)...Horizontal hole, (83)
...pulp, (93A>...outlet, (101)
...Electric heater. Applicant Sanyo Electric Co., Ltd. and one other representative Patent attorney Shizuo Sano Figure 5 IJ (XJ

Claims (1)

[Claims] 1. In a frozen dessert manufacturing apparatus that is equipped with a takeout device in front of a cooling chamber for cooling the frozen dessert stock solution, and opens a passage formed in the takeout device by operating an opening/closing means to externally supply the frozen dessert stock solution that has been cooled to a semi-frozen state. , a heating means for heating and sterilizing the frozen dessert stock solution, and during the sterilization operation by the heating means,
A cleaning and sterilizing apparatus for a frozen dessert manufacturing apparatus, characterized in that a hot water supply means is provided for supplying hot water to a passage from the opening/closing means to the outlet to clean the passage.