JPH09299236A - Heating hot storage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the edible time of a food material from being shortened due to the decline of a temperature inside a steaming chamber caused by opening a door in a heating hot storage device for performing the heating and heat insulation of the food material housed inside the steaming chamber by steam. SOLUTION: This heating hot storage device performs the processes of the heating for introducing the relatively large amount of the steam into the steaming chamber 1 and the heat insulation for introducing the relatively small amount of the steam to the steaming chamber 1 by housing the food materials 7 inside the steaming chamber 1, supplying the steam through a steam supply pipe 4 provided with a steam control valve 8 to the steaming chamber 1 and controlling the opening and closing of the steam control valve 8 by an operation controller 11. Then, a sensor 3 for detecting the opening and closing of the door 15 of the steaming chamber 1 and a steam amount limiting means 14 for limiting a steam amount to be introduced to the steaming chamber 1 are provided, the sensor 3 and the steam amount limiting means 14 are electrically connected to the operation controller 11 and the steam for the amount limited by the steam amount limiting means 14 is supplied during it is detected that the door 15 is opened by the sensor 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating and heating apparatus for heating foodstuffs stored in a steaming chamber by introducing steam into the steaming chamber and keeping the temperature after the heating is completed.

[0002]

2. Description of the Related Art In the case of a heating and heating apparatus that heats and keeps the food contained in a steaming room by introducing steam into the steaming room, the temperature required during heating differs from that required during heating. The heating mode in which a relatively large amount of steam is introduced and the heat retention mode in which a relatively small amount of steam is introduced are set in advance, and the supply steam amount is adjusted according to the process. There is a door in the steaming room, and it is done by opening the door when putting food in and out, but if the door is opened while keeping warm, the steam in the steaming room escapes and the outside air enters the steaming room. As a result, the temperature inside the steam room decreases. Also, if steam is supplied while the door is open and food is being taken in and out, it becomes difficult to work due to the steam blown out of the steam room, so if the steam is not supplied when the door is open, If the opening time becomes longer, the temperature inside the steaming room will drop significantly. There is a problem that when the temperature of the food material is lowered while it is kept warm, water drops are attached to the surface of the food material to make it sticky and the edible time is shortened.

[0003]

DISCLOSURE OF THE INVENTION The problem to be solved by the present invention is to reduce the temperature in the steaming chamber by opening the door in a heating and warming device for heating and keeping the foodstuffs stored in the steaming chamber by steam. This is to prevent the edible time of the food from becoming shorter.

[0004]

[Means for Solving the Problems] A foodstuff to be heated is stored in a steaming room, and a steaming chamber is provided through a steam supply pipe provided with a steam control valve for controlling steam supply in the middle of steam generated by a steam generator. The operation control device controls the opening and closing of the steam control valve to control the heating process for introducing a relatively large amount of steam into the steam chamber and the heat retention process for introducing a relatively small amount of steam into the steam chamber. In the heating and heating apparatus to be performed, a sensor for detecting opening / closing of the door of the steaming chamber and a steam amount limiting means for limiting the amount of steam introduced into the steaming chamber are provided, and the sensor and the steam amount limiting means are electrically connected to the operation control device While connected, the amount of steam limited by the amount of steam limiting means is supplied while the door detects that the door is open.

Further, a sensor for detecting the opening and closing of the door of the steaming room and an integrating device for integrating the door opening time are provided. The sensor and the integrating device are electrically connected to the operation control device, and the operation control device is When the integrated value of the door opening time during heat retention exceeds a certain time, the steam supply amount is increased to raise the temperature in the steam room. Alternatively, a temperature detection device for detecting the temperature in the steaming room is provided electrically connected to the operation control device,
When the difference between the set temperature and the detected temperature exceeds a certain temperature during heat retention, the operation control device increases the steam supply amount and raises the temperature in the steam room.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. 1 is a sectional side view, and FIG. 2 is a partial sectional front view in which the left half is a section. The heating and heating apparatus is provided with a steam chamber 2 in the lower part of the box-shaped steaming chamber 1, a steam exhaust port 12 in the upper part, a door 15 in the front, and a sensor 3 for detecting opening / closing of the door 15 in the door 15.
A steam supply pipe 4 for supplying the steam generated by the steam generator 10 to the steam chamber 2 is connected to the steam chamber 2, and a steam ON-OFF control valve for controlling the steam supply is provided in the middle of the steam supply pipe 4. 8 and a steam amount limiting means 14 including a steam amount limiting control valve 9 and an orifice 5 which are connected to the steam supply pipe 4 before and after the steam ON-OFF control valve 8. A shelf 6 in the steam room 1 with a drawer-like shape and a hole for steam circulation on the bottom surface.
The foodstuff 7 to be heated is placed inside the shelf 6, and the temperature detecting device 13 for detecting the temperature inside the steaming room 1 is provided inside the steaming room 1. An operation control device 11 connected to the sensor 3, the steam ON / OFF control valve 8, the steam amount limiting control valve 9, and the temperature detection device 13 is provided above the heating and storage device. In the operation control device 11, the heating process time, the heating process temperature, the reheating door opening time, and the reheating temperature can be set to arbitrary values, and the steam ON-OFF control valve 8 and the steam amount limited control valve can be set. The opening / closing control of 9 and the temperature of the steaming room and the operation mode can be displayed.

When the food is heated, the above set values are set in the operation control device 11 respectively. When the food 7 is placed on the shelf and the operation is started in the heating mode, the operation control device 11 opens the steam ON-OFF control valve 8, starts the detection of the elapsed time, and displays that it is in the heating mode. The steam generated by the steam generator 10 passes through the steam ON-OFF control valve 8 and is sent to the steam chamber 2 and introduced into the steaming chamber 1 to heat the food material 7 in the steaming chamber 1. When the elapsed time being detected reaches the heating step time, the operation control device 11 changes the mode from the heating mode to the heat retention mode, and displays that it is the heat retention mode. In the heat retention process, the required amount of steam per time is smaller than that in the heating process, and the operation control device 11 opens and closes the steam ON-OFF control valve 8 so that the temperature of the steaming chamber obtained from the temperature detection device 13 becomes the heat retention process temperature. Control. The operation control device 11 opens the steam ON-OFF control valve 8 when the temperature inside the steaming chamber drops, and the steam from the steam generator 10 is supplied into the steaming chamber 1, but the door 15 is opened as necessary during the heat retention process. When the sensor 3 detects that the food material that has been opened and heated is taken out and the door is opened, the operation control device 11 closes the steam ON-OFF control valve 8 regardless of the steaming room temperature, The control for opening the quantity limiting control valve 9 is performed. When only the steam amount limiting control valve 9 is opened, the amount of steam passing through the steam amount limiting means 14 is reduced due to the orifice 5, and a limited amount of steam is supplied to the steaming chamber 1. By constantly supplying the steam when the door is opened, the temperature inside the steaming chamber 1 is prevented from decreasing to a minimum, and the steam supply is limited to prevent the steam from being blown out, thereby facilitating the work.

The operation control device 11 has a built-in integrating device (not shown) for integrating the door opening time, and when the sensor 3 detects that the door is open, the door opening time is integrated. To do. When the integrated value of the door opening time exceeds the set reheating door opening time, the operation control device 11 temporarily switches the mode to the heating mode and opens the steam ON-OFF control valve 8. The operation control device 11 increases the steam supply amount per time by raising the temperature inside the steaming chamber 1 by setting the heating mode, and when the temperature inside the steaming chamber 1 reaches a set value, the operation control device 11 returns to the heat retention mode. Also,
The operation control device 11 uses the temperature detection device 13 to control the steaming chamber 1
The temperature inside is detected, and when the door is opened, the temperature inside the steaming chamber 1 decreases, and when the difference between the detected temperature and the heat-retaining process temperature exceeds the reheating temperature, the operation control device 11 temporarily heats the mode. Switch to the mode and open the steam ON-OFF control valve 8. The operation control device 11 increases the steam supply amount per time by raising the temperature inside the steaming chamber 1 by setting the heating mode, and when the temperature inside the steaming chamber 1 reaches a set value, the operation control device 11 returns to the heat retention mode.

Here, in order to temporarily switch to the heating mode during the heat retention process, the integrated value of the door opening time and the steaming chamber 1
Although both the temperature difference from the heat-retaining process inside is detected, only one of them may be detected. If the control for limiting the amount of steam when the door is opened is effective for both the heating mode and the heat retention mode, it is possible to prevent the steam from blowing out even when the door is opened during the heating mode.

[0010]

By implementing the present invention, steam does not blow out even when the door is opened, the temperature drop in the steaming room can be minimized, and the deterioration of food materials can be prevented. Also, if the door is left open for a long time, the temperature inside the steaming room will drop, but in that case, the temperature inside the steaming room can be raised by temporarily switching to the heating mode, and deterioration of the food can be prevented. .

[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 Steaming Room 2 Steam Chamber 3 Sensor 4 Steam Supply Pipe 5 Orifice 6 Shelf 7 Food 8 Steam ON-OFF Control Valve 9 Steam Quantity Limiting Control Valve 10 Steam Generator 11 Operation Control Device 12 Steam Exhaust Port 13 Temperature Detection Device 14 Steam Quantity Limitation means 15 Door

Claims (3)

[Claims] 1. A food material to be heated is stored in a steaming chamber, and steam generated by a steam generator is supplied to the steaming chamber through a steam supply pipe provided with a steam control valve for controlling steam supply on the way. The operation control device controls the opening and closing of the steam control valve to perform heating for introducing a relatively large amount of steam into the steam room and heating and heating for introducing a relatively small amount of steam into the steam room. In the device, a sensor for detecting the opening and closing of the door of the steaming room and a steam amount limiting means for limiting the amount of steam introduced into the steaming chamber are provided, and the sensor and the steam amount limiting means are electrically connected to the operation control device. The heating and heating apparatus characterized in that a limited amount of vapor is supplied by the vapor amount limiting means while the opening of the door is detected by the sensor. 2. The food to be heated is stored in the steaming chamber, and steam generated by the steam generator is supplied to the steaming chamber through a steam supply pipe provided with a steam control valve for controlling steam supply on the way. The operation control device controls the opening and closing of the steam control valve to perform heating for introducing a relatively large amount of steam into the steam room and heating and heating for introducing a relatively small amount of steam into the steam room. The device is equipped with a sensor that detects the opening and closing of the door of the steaming room and an integrating device that integrates the door opening time.The sensor and integrating device are electrically connected to the operation control device, and the operation control device keeps warm The heating and heating apparatus characterized by increasing the steam supply amount to raise the temperature in the steaming chamber when the integrated value of the door opening time of the heating chamber exceeds a certain time. 3. The food to be heated is stored in the steaming chamber, and steam generated by the steam generator is supplied to the steaming chamber through a steam supply pipe provided with a steam control valve for controlling steam supply on the way. The operation control device controls the opening and closing of the steam control valve to perform heating for introducing a relatively large amount of steam into the steam room and heating and heating for introducing a relatively small amount of steam into the steam room. In the device, a temperature detection device that detects the temperature in the steaming room is provided electrically connected to the operation control device, and the operation control device supplies steam when the difference between the set temperature and the detected temperature becomes a certain temperature or more during heat retention. The heating and heating apparatus is characterized in that the temperature in the steaming chamber is increased by increasing the temperature.