JP4673824B2 - Cooking equipment - Google Patents

Description

  The present invention relates to a cooking device having a timer function and an overheat prevention means.

In recent years, many cooking devices such as gas stoves and electromagnetic cookers have overheat prevention means. This is provided with temperature measuring means comprising a temperature sensor for measuring the temperature of the container containing the food, and heating by the heating means to prevent the container from being overheated based on the temperature measured by the temperature measuring means. Is to stop. (For example, see Patent Document 1)
Many of the cooking devices also have a timer function. This is to continue heating the container containing the food for a predetermined time and to display the remaining time of the predetermined time.
Japanese Patent Publication No. 63-67106

  By the way, in the cooking device having the heating prevention means and the timer function as described above, if the heating is stopped halfway by the overheating prevention means while the timer function is operating, the timer function is stopped and reset. (Initialization), the elapsed time and remaining time are not retained and are not displayed, and when resuming heating, it is not known how much time should be heated, and the food in the container is kept for a predetermined time or more. There was a risk that cooking would fail due to heating.

  The present invention has been made in view of the above points. The object of the present invention is to enable heating to check the remaining time even when heating is stopped by the overheat prevention means during operation of the timer function. It is to provide cooking equipment.

  In order to solve the above-mentioned problem, in the cooking device according to claim 1, heating means for heating the container containing the cooked food, temperature measuring means for measuring the temperature of the container, and heating by the heating means For a predetermined time and displaying the remaining time of the predetermined time, and when the temperature measured by the temperature measuring means reaches a predetermined temperature or starts rising from an equilibrium state, heating by the heating means is stopped. In the cooking device provided with the overheating prevention means, the timer holding means for holding and displaying the remaining time of the timer function when heating by the heating means is stopped by the overheating prevention means while the timer function is in operation. It is characterized by this.

  By providing such a timer holding means, the remaining time can be confirmed even when heating is stopped by the overheat prevention means during the operation of the timer function, and how much heating has been performed on the food. It is possible to know and it is possible to accurately perform the cooking process.

  Conventionally, if heating is stopped halfway by the overheat prevention means while the timer function is operating, the remaining time is not maintained and it is difficult to know how much heating has been performed on the food, but it is difficult to continue cooking. The remaining time can be confirmed, and the cooking can be continued accurately.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. Examples of the cooking device according to the present invention include, but are not limited to, a gas cooker equipped with a gas stove and a so-called IH electromagnetic cooker that heats a container by induction heating.

  First, the basic configuration of the case where the cooking device is a gas cooker will be described below. An example of a general gas cooker 1 is shown in FIGS.

  The gas cooker 1 shown in FIG. 2 includes a gas stove 12 and a grill 13 in a casing 10. The grill 13 is disposed inside a central portion of the casing 10 in the left-right direction, and a grill door 13a is disposed on the front surface thereof so as to be freely opened and closed. On the top plate 11 portion of the casing 10, two gas stoves 12 are arranged, one on the left side and one on the right side. The gas stove 12 includes a burner cap 22 placed on the burner main body 21 and a heating means is constituted by the gas burner 2 having a flame outlet around the burner body 21, and the gas stove 12 passes through the opening of the stove formed in the top plate 11 of the casing 10. Are exposed upwards. Around the opening of the top plate 11, a virtues 14 in which a plurality of virtues claws 14 a are arranged in an annular shape are provided. This gas stove 12 is a temperature sensor as a temperature measuring means for controlling the combustion of the gas burner 2 by measuring the temperature of the bottom of a container (not shown) containing the food placed on the virtues 14. 3 is provided. The temperature sensor 3 is provided with a temperature sensing portion such as a thermistor as a temperature measuring means at the upper end portion, and is disposed at a substantially central portion of the gas stove 12 at the bottom of the container 4 placed on the virtues 14. Contact to measure temperature.

  On the front surface of the casing 10, there are provided a stove operating portion 15 for manually operating the gas stove 12 and a grill operating portion 16 for manually operating the grill 13, and operations from these operating portions are provided. The command is processed by the built-in control unit 5. The stove operation unit gives the control / ignition / extinguishing operation unit for the gas burner 2 to the control unit 5 and the control unit 5 gives the command for adjusting the combustion amount of the gas burner 2. It consists of a filter heating amount adjustment operation part. Various types of operation units such as dial type knobs 15a and 16a, push buttons, and a touch panel as shown in FIG. 2 are conceivable, but are not particularly limited. Similarly, the grill operation unit includes a grill ignition / extinguishing operation unit and a grill heating amount adjustment operation unit.

  Next, the control part 5 which controls the flow and combustion of gas is demonstrated based on the schematic block diagram shown in FIG. The gas stove 12 and the grill 13 have the same basic gas flow and combustion. Therefore, the description of the grill 13 is omitted, and the gas stove 12 will be described.

  Each gas burner 2 is provided with a spark plug 23, a temperature detecting means 24 comprising a thermocouple for detecting whether or not the burner is burning, and the temperature sensor 3, which are connected to the control unit 5. It is.

  Each gas burner 2 is connected to a branch supply path 62 that branches from a fuel supply path 6 that supplies a gas fuel such as city gas. An original gas valve 61 is provided in the fuel supply path 6, and an electromagnetic on-off valve 63 that switches between supply and stop of gas fuel and adjustment of the supply amount of gas fuel are performed in each branch supply path 62. Therefore, a flow control valve 64 driven by a stepping motor capable of fine adjustment of the stop angle is provided. The on-off valve 63 and the flow rate control valve 64 are connected to the control unit 5, and operate according to a command from the control unit 5.

  When an ignition command is sent from the stove ignition / fire extinguishing operation unit or the grill ignition / fire extinguishing operation unit, the control unit 5 opens the on-off valve 63 and activates the spark plug 23 to detect the combustion state by the thermocouple. Then, the operation of the spark plug 23 is stopped and the ignition process is terminated. Then, the heating amount is adjusted based on the combustion amount command sent from the stove heating amount adjusting operation unit. When a fire extinguishing command is sent, the on-off valve 63 is closed and the gas burner 2 is extinguished.

  The control unit 5 has a timer function. The timer function operates when heating by the heating means is continued for a predetermined time. When the predetermined time elapses, the timer function stops heating and displays the remaining time until the predetermined time elapses. Is. The remaining time is displayed on a display unit (not shown) that performs display such as digital display.

  Moreover, the control part 5 is provided with the overheat prevention means. For example, the overheat prevention means is configured such that the temperature measured by the temperature measurement means reaches a predetermined temperature, the temperature starts to rise from an equilibrium state, or the temperature measured by the temperature measurement means or its history is a predetermined condition. When the above condition is satisfied, it is determined that there is a possibility of overheating, and heating by the heating means is stopped. An example of stopping heating by the heating means when the temperature measured by the temperature measuring means starts to rise from an equilibrium state will be described. The rate of temperature rise measured by the temperature measuring means is different from the previously measured temperature. When the ascending speed falls below a predetermined value, it is determined that the state is in an equilibrium state. Then, a temperature higher than the equilibrium temperature by a predetermined temperature is set as a temperature that is likely to overheat (hereinafter referred to as a stop temperature). When the temperature measured by the temperature measuring means reaches the stop temperature, it is determined that the temperature has risen due to overheating, and heating by the heating means is stopped.

  As described above, a temperature higher than the equilibrium temperature by a predetermined temperature is set as the stop temperature. As an example of the stop temperature, when the equilibrium temperature is about 100 ° C., the stop temperature is 120 ° C. and the equilibrium temperature is about When the temperature is 120 ° C, the stop temperature is 130 ° C, when the equilibrium temperature is about 130 ° C, the stop temperature is 140 ° C, and when the equilibrium temperature is 140 ° C or higher, the stop temperature is set to the equilibrium temperature + 20 ° C. To do. Of course, other settings may be used.

  When the overheat prevention means determines that there is a possibility of overheating as described above and stops heating by the heating means, the timer function is conventionally stopped and reset, and the display unit displays the remaining time. However, in the present invention, when the heating is stopped by the overheat prevention means, the control unit includes timer holding means for holding the remaining time of the timer function. When the heating is stopped by the overheat prevention means, the timer function is temporarily stopped, but the remaining time of the timer function is held by the timer holding means, and the remaining time is displayed on the display unit. When heating by the heating means is resumed, the temporary stop of the timer function is canceled and the timer function is restored. A detailed description will be given below based on the flowchart shown in FIG.

  When heating by the heating means is started ("ignition" in the flowchart) and the timer function is activated, the remaining time is displayed on the display unit.

  When a predetermined time has elapsed (same as "time up"), heating by the heating means is stopped ("fire extinguishing") by the timer function.

  When the overheat preventing means is activated before the predetermined time has elapsed, the remaining time at that time is held by the timer holding means, and an error display and the remaining time are displayed on the display unit.

  Then, when the predetermined time (predetermined time different from the predetermined time of the timer function) elapses or the temperature measured by the temperature measuring unit falls below the predetermined temperature, the error displayed on the display unit is displayed. Turn off the display and remaining time display. After that, when the appliance plug is returned to the fire extinguishing position and the stove ignition / fire extinguishing operation unit (or grill ignition / fire extinguishing operation unit) is put into the fire extinguishing state, the remaining time is displayed on the display unit. Then, when the timer function is activated after re-igniting, the remaining time is set as a predetermined time for continuing heating by the timer function, and the remaining time of the predetermined time is displayed on the display unit.

  In addition, after the overheat preventing means is activated and the error display and the remaining time are displayed on the display unit, before the predetermined time elapses or before the temperature measured by the temperature measuring means falls below the predetermined temperature, When reignition is performed, the timer function automatically returns and the remaining time is set as a predetermined time to continue heating by the timer function, and the remaining time of the predetermined time is displayed on the display unit and Alternatively, the heating amount of the grill) is adjusted to the state before the heating is stopped by the overheat prevention means. That is, in this embodiment, the timer holding unit also has a function of storing and returning the heating amount.

  Like the present invention, by providing the timer holding means, the remaining time can be confirmed even if the heating is stopped halfway by the overheat prevention means during the operation of the timer function, and how much heating is applied to the food. It is possible to know whether or not the cooking has been performed, and it is possible to accurately carry out the cooking.

  Although not shown, an electromagnetic cooker may be used as the cooking device. Since the electromagnetic cooker is the same as a widely known one, a detailed description thereof will be omitted, and a brief description will be given. A heating coil is disposed below the top plate of the casing. The upper top surface of the top plate serves as a container mounting portion. The bottom of the container is made of metal or is provided with metal, and an AC current is passed through the heating coil to generate eddy currents due to electromagnetic induction in the metal at the bottom of the container. I do. Moreover, the temperature sensor as a temperature measurement means is provided in the lower surface of the top plate, and the temperature of a container is indirectly measured through a top plate. In addition, an operation unit is provided on the front surface of the casing, and heating start / stop operation and heating amount adjustment operation can be performed.

  The electromagnetic cooker has a control unit that controls the energization / stop and the energization amount of the heating coil based on the heating start / stop command and the heating amount adjustment command from the operation unit, as well as the temperature sensor. The temperature is controlled. Furthermore, the same timer function, overheat prevention means, and timer holding means as described above are provided, and the same effect as in the case of the gas cooker can be obtained.

  In the present embodiment, the timer holding means has been described as holding the remaining time of the timer function when heating is stopped by the overheat prevention means during operation of the timer function, but the heating stop by the overheat prevention means is described. Instead, another safety device, for example, a device that detects the disappearance of the flame of the gas burner and stops heating may be used. The sensor that detects the extinction of the flame is not particularly limited, such as a sensor that detects energization in the flame and a sensor that detects a temperature including a thermocouple.

It is a flowchart of one Embodiment of this invention. It is a perspective view of a gas cooker. It is a schematic block diagram of the control system of the gas flow and combustion of a gas cooker same as the above.

Explanation of symbols

1 Gas cooker 2 Gas burner 3 Temperature sensor

Claims (1)

  A heating means for heating the container containing the food; a temperature measuring means for measuring the temperature of the container; and a timer function for continuing the heating by the heating means for a predetermined time and displaying the remaining time of the predetermined time. In the cooking device provided with overheating preventing means for stopping heating by the heating means when the temperature measured by the temperature measuring means reaches a predetermined temperature or starts to rise from the equilibrium state, the timer function is in operation A cooking device, comprising timer holding means for holding and displaying the remaining time of the timer function when heating by the heating means is stopped by the overheat prevention means.

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