JPH10117697A - Producing device for ice cream and the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject device capable of easily and speedily coping with a trouble in operation by installing a specific display at an operation panel to confirm a situation at the time of heat sterilization operation at a glance. SOLUTION: This device is provided with a raw material tank and a heat pump type freezer cooling or heating a freezer barrel producing ice cream by cooling while stirring, and raises/keeps/cools/keeps the temp. of ice cream material with in the raw material tank and in the freezer barrel according to a prescribed heat sterilizing process at the time of heat sterilization processing. At this time, a seven-segment LED display 32 is attached to the operation panel 31 to display each process of the temperature raising/keeping/ cooling/keeping of the heat sterilization process in alphabet and to alternately display the alphabet display and the holding residual time of legal sterilization temperature. Thereby which process is under execution at the time of heat sterilization operation and the holding residual time of the legal sterilization temperature at the time of a temperature keeping residual time are confirmed at a glance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing frozen desserts such as soft ice cream and shakes.

[0002]

2. Description of the Related Art An example of a conventional frozen dessert production apparatus is shown in FIG. A first cooler 21 is provided around the raw material tank 8 for storing the liquid frozen dessert raw material 24 for cooling the raw material tank 8. A second cooler 3 for cooling the frozen dessert supplied from the raw material tank 8 is provided around the freezer cylinder 1 for cooling and producing the frozen dessert while stirring. And
The raw material tank 8 and the freezer body 1 are covered with a heat insulating material 32.

When the frozen dessert raw material 24 is loaded into the raw material tank 8, a part of the frozen dessert raw material 24 enters the freezer body 1 through the hole 10 through the carburetor tube 9, and is filled in a predetermined amount.

During the cooling operation, the refrigerant gas discharged from the compressor 15 passes through the four-way valve 16 through the condenser 16 as shown by the solid line arrow.
The water enters the heat transfer pipe 17 and radiates heat to the cooling water flowing through the heat transfer pipe 18 to be condensed and liquefied. This liquid refrigerant branches into two,
One of them is adiabatically expanded by being throttled by the first electric expansion valve 20, and then is evaporated and vaporized in the course of flowing through the first cooler 21, thereby cooling the frozen dessert raw material 24 in the raw material tank 8 by the latent heat of evaporation. .

The other is adiabatically expanded by being throttled by the second electric expansion valve 22 and then evaporated and vaporized in the second cooler 3 to cool the frozen dessert raw material 24 in the freezer body 1 by its latent heat of evaporation. The refrigerant gas evaporated in the first cooler 21 flows through the capillary tube 5, then joins with the refrigerant gas evaporated in the second cooler 3, and passes through the four-way valve 16 to the compressor 15.
Inhaled.

During this time, the frozen dessert raw material 24 in the freezer body 1 is stirred by the stirrer 2 driven by the electric motor 7 via the rotating shaft 4.

When the cooling operation is continued for a while, the frozen dessert raw material 24 in the freezer body 1 freezes to become a frozen dessert 25. Thereafter, the cooling operation is stopped and repeated to repeat
Is maintained at a predetermined hardness.

When the lever 11 of the take-out device 26 is lifted upward, the plunger 14 moves upward via the rod 12 against the elastic force of the spring 23, and the take-out switch 13 is closed accordingly. At the same time, the through hole 31 is opened. Then, the frozen dessert 25 in the freezer body 1 is pushed by the stirrer 2 and taken out from the outlet 33 through the through hole 31.

When the lever 11 is lowered, the take-out switch 13 opens and the through hole 31 is closed. If the refrigerator is stopped when the removal switch 13 is closed, the cooling operation of the refrigerator is restarted by a signal from this.

Before taking out the frozen dessert 25 for a long time, the frozen dessert raw material 24 in the raw material tank 8 and the frozen dessert raw material 24 or the frozen dessert 25 in the freezer body 1 are preceded by a legal sterilization temperature and time (68 ° C.). A heat sterilization operation is performed to hold and sterilize the heat for 30 minutes or more.

During the heating operation of the refrigerator, the refrigerant gas discharged from the compressor 15 is branched into two via a four-way valve 16, one of which is passed through a check valve 6, as shown by a dashed arrow. Cooler
The frozen dessert material 24 in the material tank 8 is condensed and liquefied by heating in the course of flowing through 21, and then adiabatically expanded by being throttled by the first electric expansion valve 20.

The other enters the second cooler 3, where it is condensed and liquefied by heating the frozen dessert raw material 24 or the frozen dessert 25 in the freezer body 1, and then squeezed by the second electric expansion valve 22 for heat insulation. Swell.

The first electric expansion valve 22 and the second electric expansion valve 22
The refrigerant having flowed through the heat exchanger merges into the condenser 17, where it is evaporated and vaporized by absorbing heat from the cooling water flowing through the heat transfer tube 18, and then sucked into the compressor 15.

FIG. 4 shows a temporal change in the temperature of the frozen dessert raw material 24 during the heat sterilization operation. When the heating switch is turned on, the refrigerator is operated for heating in the temperature raising step, and the temperature of the frozen dessert raw material 24 in the raw material tank 8 rises from 10 ° C. to 68 ° C., and the frozen dessert raw material 24 and the frozen dessert 25 in the freezer body 1 are heated. Is from -6 ℃
Heat to 68 ° C.

Next, by intermittently performing the heating operation of the refrigerator in the warming process, the frozen dessert raw material 24 is maintained at the legal sterilization temperature and time, that is, at 68 ° C. or more, for 30 minutes or more.

After the set time has elapsed, the temperature of the frozen dessert raw material 24 is reduced to about 10 ° C. by performing the cooling operation of the refrigerator in the cooling process. Next, the process proceeds to a cooling process, and the temperature of the frozen dessert raw material 24 is maintained at about 10 ° C. by intermittently performing the cooling operation of the refrigerator.

When the cooling switch is turned on, the refrigerator is operated to be cooled, whereby the frozen dessert raw material 24 in the freezer body 1 is operated.
Temperature drops to -6 ° C.

[0018]

In the above-mentioned conventional frozen dessert production apparatus, during the accelerated sterilization operation, this is indicated by turning on one lamp, so that the driver can know which heating sterilization process is being performed. Therefore, there is a problem that it is difficult to cope with a trouble during the heat sterilization operation.

[0019]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its gist is to provide a raw material tank for storing a frozen dessert material and a frozen dessert supplied from the raw material tank. A heat pump type refrigerator that cools or heats a freezer body that produces frozen desserts by cooling the raw materials while stirring the raw materials is provided. During the heat sterilization operation, the temperature of the frozen dessert material in the raw material tank and the freezer body is increased according to a predetermined heat sterilization process. In a frozen dessert manufacturing apparatus for keeping, cooling, and keeping cold, a 7-segment LED display is provided on an operation panel.
Each segment of the heating, sterilization, cooling, and cooling in the heat sterilization process is alphabetically displayed by a segment LED display, and the alphabet display indicating the heat maintenance process and the remaining remaining time of the legal sterilization temperature are alternately displayed in the heat maintenance process. A frozen dessert manufacturing apparatus characterized in that:

[0020]

1 and 2 show an embodiment of the present invention.
Is shown in As shown in FIG. 2, a take-out device 26 and an operation panel 31 are provided on the front surface of the main body 30 of the frozen dessert production device.

The details of the operation panel 31 are shown in FIG. In FIG. 1, reference numeral 32 denotes a 7-segment LED display, and reference numeral 33 denotes a sterilization switch. By pressing this switch, a heating operation is started. Reference numeral 34 denotes a washing switch. When this switch is pressed, the washing indicator lamp 35 is turned on, and at the same time, the agitator 2 is driven to rotate.

Reference numeral 36 denotes a cooling switch. When the cooling switch is pressed, the cooling indicator lamp 37 is turned on and the cooling operation is started at the same time, the frozen dessert raw material in the raw material tank 8 is kept at 10 ° C. or less, and the frozen dessert 25 in the freezer body 1 is cooled. Cooled to about -6 ° C.

Reference numeral 38 denotes a stop switch. When this switch is pressed, all operations of the frozen dessert manufacturing apparatus are stopped. Reference numeral 39 denotes an up-down switch. When the switch is pressed, the setting lamp 40 is turned on and the hardness of the frozen dessert 25 in the freezer body 1 can be arbitrarily set.

When the sterilization switch 33 is depressed, the heating operation is started, and the respective steps of temperature increase, heat retention, cooling and cooling are progressed in accordance with a predetermined heat sterilization step.
The segment LED display 32 displays each step in alphabetical order. For example, HU is displayed for the temperature increasing step, P is displayed for the heat retaining step, CD is displayed for the cooling step, and PC is displayed for the cooling step.

In the warming process, an alphabet P indicating the warming process and the remaining time (for example, 13 in minutes) of the legal sterilization temperature are alternately displayed every two seconds. Other configurations and operations are the same as those of the conventional one shown in FIG. 3, and corresponding members are denoted by the same reference numerals and description thereof is omitted.

[0026]

According to the present invention, a 7-segment LED display is provided on the operation panel, and the heating, sterilization, cooling, and cooling steps of the heating and sterilization process are alphabetically displayed by the 7-segment LED display. At the time of the sterilization operation, it is possible to know which step is being performed, and therefore, it is possible to easily and quickly deal with a trouble during the heat sterilization operation.

Further, in the warming process, the alphabetical display of the warming and the remaining time of the legal sterilization temperature are displayed alternately, so that the operation can be performed with confidence.

[Brief description of the drawings]

FIG. 1 is a front view of an operation panel according to an embodiment of the present invention.

FIG. 2 is a front view of the frozen dessert manufacturing apparatus according to the present invention.

FIG. 3 is a system diagram of a conventional frozen dessert manufacturing apparatus.

FIG. 4 is a diagram illustrating a temporal change in the temperature of a frozen dessert material during a heat sterilization operation.

[Explanation of symbols]

 31 Operation panel 32 7-segment display

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Toshimasa Takahashi 1 Takamichi, Iwazuka-cho, Nakamura-ku, Nagoya-shi Nagoya Research Laboratory, Mitsubishi Heavy Industries, Ltd.

Claims (1)

[Claims] 1. A heat pump type refrigerator for cooling or heating a freezer body for producing a frozen dessert by stirring and cooling the frozen dessert raw material supplied from the raw material tank and storing the frozen dessert raw material. In a frozen dessert manufacturing apparatus for raising, keeping, cooling, and keeping the frozen dessert raw material in the raw material tank and the freezer body in accordance with a predetermined heat sterilization process during operation, a 7-segment LED display is provided on an operation panel. Temperature rise of the above-mentioned heat sterilization process,
A frozen dessert manufacturing apparatus characterized in that each step of heat retention, cooling, and cold insulation is displayed in alphabetical letters, and in the heat retention step, alphabetical display indicating the heat retention step and remaining retention time of legal sterilization temperature are alternately displayed.