JPH09313348A - Food refrigerating, heating and heat storage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the deterioration of quality and to provide food in a better state in a device for heating already cooked frozen food. SOLUTION: In constitution capable of introducing steam from a steam generator 5, cooling air from an air cooler 6 and heating air from an air heater 7 to a storage chamber 4 for storing a food material 3, the frozen food material 3 is stored inside the storage chamber and the cold storage of the food material is performed by introducing the air cooled by the air cooler 6 to the inside of the storage chamber. Also, at the time of heating the food material, direct heating for heating the food material by the steam by supplying the steam to the inside of the storage chamber or indirect heating for heating the air by the air heater and heating the food material by heating steam is performed. Then, after heating, direct heat storage for heat-insulating the food material at a temperature lower than the one at the time of heating by supplying the steam to the inside of the storage chamber or indirect heat storage for heating the air by the air heater and heat-insulating the food material by the heating air of the temperature lower than the one at the time of heating is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food refrigerating and heating apparatus for refrigerating, heating and heating foods.

[0002]

2. Description of the Related Art Foods that have been frozen and can be eaten only by heating them are often used in fast food restaurants and the like because they are easy to cook. As a device for heating those foodstuffs, there is a steam-type heating device that has a plurality of shelves in the storage room, puts the foodstuffs on the shelves, and introduces steam into the storage room to heat the foodstuffs with steam. . Heating with steam is good when the food is steamed food such as frozen meat buns, but when heating frozen fried foods or frozen rice balls, steam heating causes water to adhere to the food and deteriorate quality. There is a problem of inviting. Also, if frozen food is suddenly heated without undergoing a thawing process, or if food that has been heated is not warmed at a temperature slightly lower than when it was heated, or if it is not warmed. However, even if the heating time becomes long, the quality may deteriorate.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention An object of the present invention is to provide an apparatus for heating cooked frozen foods, which can prevent deterioration of quality and provide food in a better condition. To provide.

[0004]

[Means for Solving the Problems] A storage room for storing foodstuffs,
A steam generator that generates steam, an air cooler that cools air, and an air heater that heats air are provided, and steam from the steam generator, cooling air from the air cooler, and an air heater are installed in the storage chamber. In the configuration that allows the introduction of heated air from, the frozen food is stored in the storage room, and the air cooled by the air cooler is introduced into the storage room to refrigerate the food. , Direct heating to heat food by steam by supplying steam to the storage chamber or indirect heating to heat food by heating air by heating air with an air heater. Direct heating that keeps food at a lower temperature than when heated by supplying steam, or indirect temperature that heats air by an air heater to keep food at a lower temperature than when heated Do one of the.

In addition, the air heater is provided with a steam heater that is heated by steam and an electric heater that is heated by electricity, and the air is heated by the steam heater and the electric heater, so that heated air having a temperature higher than the steam temperature is heated. Indirect heating can be performed by dividing the storage chamber into multiple units, and each storage chamber independently has steam from the steam generator, cooling air from the air cooler, and heating from the air heater. Allows the introduction of air.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a food refrigerating / heating storage device having two food storage chambers, FIG. 1 is a sectional side view, and FIG. 2 is a partial sectional front view in which one storage chamber and the lower part of the device are sectioned. Each of the storage chambers 4 has a blower 1 and a steam spray pipe 10 at the bottom, a shelf 2 inside, a door 11 at the front, and a steam generator 5 for generating steam below the storage chamber 4 and a rear part of the storage chamber 4. An air heater 7 including a steam heater 8 and an electric heater 9, an air cooler 6 for cooling air, and a controller 12 are provided above the storage chamber 4. Air cooler 6 and air heater 7 and storage chamber 4
The inside is connected through a blower 1 portion, and the cooling air from the air cooler 6 or the heated air from the air heater 7 is sent into the storage chamber 4 by the blower 1. The steam generator 5 and the steam spray pipe 10 are directly connected by the heating steam pipe 13, and the steam generator 5 and the steam heater 8 are connected by the indirect heating steam pipe 16 in the middle of the direct heating steam pipe 13. A direct heating solenoid valve 14 and an indirect heating solenoid valve 15 are provided in the middle of the indirect heating steam pipe 16. Control device 12
Is a blower 1, a steam generator 5, an air cooler 6, an electric heater 9, a direct heating solenoid valve 14, an indirect heating solenoid valve 15.
The control device 12 detects the temperature in the storage chamber 4 and controls each device so as to be in the state of each preset process.

When the food 3 which is a frozen food is heated,
The temperature and time in each process of refrigerating, heating, and warming, and direct heating or indirect heating are set in the controller 12 according to the food, and the food 3 is placed on the shelf 2 in the storage chamber 4. And close the door 11 on. When the operation of the food refrigeration heating / refrigerating apparatus is started, the controller 12 operates the air cooler 6 and the blower 1 to perform the refrigerating operation of introducing the cooling air generated by the air cooler 6 into the storage chamber 4. Temperature during refrigeration is -5 ° C to 5
The food material 3 is thawed by setting an arbitrary value between 0 ° C. and keeping the temperature set by the control device 12.

When the refrigerating process is ended and the heating process is started, the controller 12 stops the refrigerating operation and directly opens the heating solenoid valve 14 so that the steam of the steam generator 5 is directly stored in the storage chamber 4. The heating operation is performed by the indirect heating in which the steam of the steam generator 5 is supplied to the steam heater 8 by opening the electromagnetic valve 15 for direct heating introduced in the above or the indirect heating in which the heated air is introduced into the storage chamber 4. In the case of performing direct heating, when the direct heating solenoid valve 14 is opened, the steam generated by the steam generator 5 is sent to the steam spray pipe 10 through the direct heating steam pipe 13, and the inside of the storage chamber 4 is supplied from the steam spray pipe 10. The steam is sprayed to heat the food material 3 on the shelf 2 with the steam. When performing indirect heating, the steam generator 5 is opened when the indirect heating solenoid valve 15 is opened.
The steam generated in 1 is sent to the steam heater 8 through the indirectly heated steam pipe 16 to heat the air in the air heater 7 part,
By introducing the heated air into the storage chamber 4 by the operation of the blower 1, the food material 3 on the shelf 2 is heated by the heated air. 10
When heating at a temperature higher than 0 ° C., the electric heater 9 is also operated so that heating up to about 200 ° C. is possible. The temperature inside the storage chamber 4 at the time of heating is controlled by opening / closing the solenoid valve 14 for direct heating or the solenoid valve 15 for indirect heating, and controlling the start / stop of the electric heater 9.

When the heating time ends, the heating operation is continued, and in the heating operation, either direct heating with steam or indirect heating with heated air is performed. In the case of direct heating, the steam generated by the steam generator 5 is directly sent to the steam spray pipe 10 through the heated steam pipe 13, and the steam is sprayed from the steam spray pipe 10 into the storage chamber 4 on the shelf 2. The food 3 is warmed by steam. When performing indirect heating, the steam generated by the steam generator 5 is sent to the steam heater 8 through the indirect heating steam pipe 16 to heat the air in the air heater 7 and the blower 1 operates to store the heated air. 4, and the food material 3 on the shelf 2 is heated by heated air. The temperature inside the storage chamber 4 during heating is also controlled by controlling the opening / closing of the direct heating solenoid valve 14 or the indirect heating solenoid valve 15, but the temperature during heating is set lower than the temperature during heating. Therefore, the electric heater 9 is not operated.

When a large amount of food material 3 is heated at one time, the average heating time becomes long, but since the storage chamber 4 is two, the food material 3 can be heated little by little. Yes, it is possible to prevent the heating time from becoming long.

[0011]

EFFECTS OF THE INVENTION By carrying out the present invention, it is possible to heat foods which are deteriorated in quality due to moisture adhering to the foods when heated by steam without deterioration. In addition, since it can be thawed in a refrigerated state with one device and then heated, and can be heated as it is after heating, it is possible to provide high-quality dishes without the time and effort required for replacement, and to store it. Providing a plurality of chambers prevents the heating time from becoming long, so that it is possible to provide high-quality dishes without deterioration. In addition, 10
Since it can be heated at a temperature higher than 0 ° C., it is possible to cook food such as browning and improve the taste.

[Brief description of drawings]

FIG. 1 is a sectional side view of an embodiment of the present invention.

FIG. 2 is a partially sectional front view of FIG.

[Explanation of symbols]

 1 Blower 2 Shelf 3 Food 4 Storage Room 5 Steam Generator 6 Air Cooler 7 Air Heater 8 Steam Heater 9 Electric Heater 10 Steam Spray Pipe 11 Door 12 Controller 13 Direct Heating Steam Piping 14 Direct Heating Solenoid Valve 15 Indirect Heating Solenoid valve 16 Indirect heating steam piping

Claims (3)

[Claims] 1. A storage chamber for storing foodstuffs and a steam generator for generating steam are provided, and the foodstuffs are heated by introducing the steam generated by the steam generator into the storage chamber. In the heating and heating device that keeps the temperature lower than the above, an air cooler that cools the air and an air heater that heats the air are provided, and the steam from the steam generator and the cooling from the air cooler are placed in the storage room. Allowing the introduction of air and heated air from the air heater, storing the frozen foodstuffs in the storage room, and refrigerating the foodstuffs by introducing the air cooled by the air cooler into the storage room, At the time of heating the food, either by directly heating the food by steam by supplying steam to the storage chamber or by indirect heating by heating air with an air heater to heat the food by heated steam, after heating, Income Direct heating that keeps food at a lower temperature than when it is heated by supplying steam to the storage room, or indirect that heats food by heating the air with an air heater to heat food at a lower temperature than when heating A food refrigeration heating / heating device characterized by performing either of the heating. 2. The food refrigeration heating / heating apparatus according to claim 1, wherein the air heater is provided with a steam heater heated by steam and an electric heater heated by electricity.
A food refrigerating heating and refrigerating device capable of heating air to a temperature higher than the steam temperature by performing heating by an electric heater in addition to heating by a steam heater and performing indirect heating with heated air at a high temperature. 3. The food refrigeration heating / heating apparatus according to claim 1 or 2, wherein the storage chamber is divided into a plurality of storage chambers, and each storage chamber independently has steam from a steam generator and an air cooler. A refrigerating and heating apparatus for food refrigeration, which is capable of introducing cooling air from the air and heating air from an air heater.