JP2871474B2 - Steam supply method for heating and warming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for supplying steam in an apparatus which performs heating and storage by steam.

[0002]

2. Description of the Related Art Steam is widely used in devices for thawing and heating frozen foods and for preserving heated foods. Since the same steam is used for heating and preserving, a system can be created by combining a heating device and a preserving device with a steam generating device, or a single food storage unit can be provided with a heating function and a preserving function. Devices have been created that can be heated. When a single-function heating device and a heating device are systemized, there are multiple food storage units.Even if a single food storage unit has both heating and storage functions, it can run out of stock or have a long storage time. In some cases, a plurality of food storage units are provided in order to prevent the food from being used, and heating and storage can be performed in parallel. In this case, the capacity of the steam supply device needs to have a capacity not to be insufficient even if the steam is supplied to all the food storage units.

[0003] However, heating is performed for a short time, and in the case of a warm storage, steam is supplied only when the temperature is lowered even for a long time, and steam is not always supplied. The steam supply to the food storage unit is performed only for a very limited time, and the capability of the steam supply device is wasted.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a steam supply method which can reduce the capacity of a steam supply device used for a heating and warming device and can reduce waste. is there.

[0005]

Means for Solving the Problems A steam supply device is combined with a food heating device and a warming device, and the heating device performs heating by supplying steam for a set time, and the heating device lowers the temperature of the food storage unit. When a heating device and a heating device are operated at the same time in a system that performs heating by supplying steam when the heating is performed, priority is given to steam supply to the heating device, and heating and preserving the food with the steam supplying device and the food are performed. In a system in which a plurality of heating devices are combined, the number of heating points to be performed in the same period is limited to a certain number or less, and the peak of the steam supply amount is reduced.

[0006]

[Function] In the case of storage, steam is supplied only when the temperature of the food storage unit has dropped. During the heating that is performed only for a short time, the steam is not supplied. The supply is not significantly affected. Also,
If each of the plurality of food storage units has a function of heating and preserving, the heating timing is often shifted from the original, so even if the number of heating points performed at the same time is limited to a certain number or less. There is not much inconvenience. By stopping the supply of steam to the preserving side during heating or by controlling so that the heating time does not overlap, it is possible to reduce the amount of steam used during peak times,
The required steam supply rate determined based on the peak time can be smaller than before.

【Example】

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a case where a heating device and a heating device are systematized. A heating device (3) for thawing and heating the frozen food, and a heating device (4) for storing the heated food are connected to the boiler (1) via a steam pipe (2) and generated by the boiler. The steam is sent through a steam pipe to a heating device or a preserving device, and is used for heating or preserving food.
A control device (6) for controlling heating and preservation controls opening and closing of a steam control valve (7) provided after branching of a steam pipe. As for the steam control valve, the heating device side is set as the steam control valve A, and the heating device side is set as the steam control valve B.

[0008] When the storage is performed, the control device detects the temperature by a temperature detection device (5) provided in the storage device, and when the temperature is reduced to the steam supply temperature, opens the steam control valve B and sends the steam to the storage device. To control the opening and closing of the steam control valve B so as to maintain a constant temperature. When heating is performed, the control device opens the steam control valve A, supplies steam to the heating device, and supplies steam for a set time. When heating is performed during the operation of the warming device, the steam supply to the warming device is not performed even if the temperature of the warming device drops to the steam supply temperature while the steam control valve A is open, and the heating device is not heated. Priority is given to steam supply, and steam supply to the warming device is performed after heating is completed.

In addition, utilizing the value of the steam pressure detecting device (8), when the steam pressure is equal to or higher than a predetermined pressure, steam is supplied to the warming device when the temperature drops to the steam supply temperature even during heating. If the steam pressure is equal to or lower than the predetermined pressure, control may be performed such that the steam is not supplied to the warming apparatus even if the temperature is lowered.

FIG. 2 shows a third embodiment of the present invention, wherein the heating / heating apparatus has a food storage section (9) composed of four chambers.
Each storage section is assumed to be A, B, C, D. Each storage section has a heating function and a preservation function, and preservation is performed as it is after the completion of heating.

When heating is performed, the control device (6) controls the heating so that the heating does not exceed the set number in the same period. FIG.
Shows an example of the state of steam supply to each room, and it is assumed that up to two chambers can simultaneously supply steam among four storage units. When heating in storage sections A and B, storage sections C and D
Is in a standby state and does not supply steam. When the heating in AB is completed, the heating in CD is started, and AB enters warm storage. A and B do not supply steam when CD and D are being heated even if they are being kept warm. When the above control is performed, the amount of steam used becomes two chambers at the maximum, and heating and preservation can be performed with a boiler having half the capacity of the conventional one.

[0012]

By implementing the present invention, the amount of steam used during peak times can be reduced, the required steam supply capacity determined on the basis of peak times can be reduced, and the capacity of the steam supply device can be reduced. , Waste can be eliminated.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of one embodiment of the present invention.

FIG. 2 is an explanatory view of another embodiment of the present invention.

FIG. 3 is an explanatory view of a steam supply situation in the case of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Boiler 2 Steam piping 3 Heating device 4 Heat storage device 5 Temperature detection device 6 Control device 7 Steam control valve 8 Steam pressure detection device 9 Food storage part

Claims (3)

(57) [Claims] 1. A steam supply device is combined with a food heating device and a heating device, and the heating device supplies steam for a set time to perform heating, and the heating device generates steam when the temperature of the food storage unit decreases. When a heating device and a heating device are operated at the same time in a system that performs heating by supplying the steam, the steam supply to the heating device is prioritized, and the steam supply to the heating device is prioritized. A method for supplying steam to a heating and warming apparatus, characterized by reducing the peak of the steam. 2. A combination of a steam supply device, a food heating device and a warming device, wherein the heating device supplies steam for a set period of time to perform heating, and the warming device generates steam when the temperature of the food storage unit is reduced. In a system that performs warming by supplying, the supply steam pressure is detected, and the heating device and the warming device are operated at the same time. A steam supply method for a heating and warming apparatus, wherein a steam supply to a heating device is prioritized without performing steam supply, and a peak of a steam supply amount is reduced. 3. A combination of a steam supply device and a plurality of devices for heating and preserving food, heating by supplying steam for a set time, and supplying steam when the temperature of the food storage unit is lowered. A steam supply method for a heating and warming apparatus, wherein the number of heating points to be performed at the same time is limited to a certain number or less and a peak of a steam supply amount is reduced.