JPS61276628A - Gas cooking stove - Google Patents

Abstract

PURPOSE:To automate cooking, and to save energy, by automatically controlling the calorific value of a burner or the temperature in an object to be heated, on the basis of the data previously stored in accordance with various cooking purposes. CONSTITUTION:A proportional solenoid valve 1 is provided between a safety valve 11 and a main burner 101. It controls the gas rate proportionally by increasing and decreasing the opening of a valve 1c by displacing a valve body 1b in accordance with the intensity of current to a solenoid coil 1a. A temperature sensor 6 detects the temperature in an object to be heated such as a cooking pan. A combustion pattern selecting means 8 automatically controls the proportional valve 1 so that it can heat the object to be heated by a predetermined pattern on the basis of lots of data previously stored in a memory means 80; that is, an object is heated at the maximum calorific value at the beginning of heating, and is kept at 100 deg.C for a predetermined time after the temperature has risen to 100 deg.C, and then is kept warm at 60 deg.C. A controller 30 has a logic circuit to output a signal to close a main valve 12, as well as to receive the input data from the pattern selecting means 8 and to control the intensity of current to be supplied to the proportional valve 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a gas stove in which temperature control of a heated object or adjustment of the firepower of a barb can be automatically set.

[Prior Art] A user such as a cook manually operates a gas flow skewer control valve to control the heating power of a gas stove while observing the state of the object to be heated.

[Problems to be solved by the invention] For this reason, it is necessary for the user to perform manual operations at any time depending on the purpose of cooking, the type and condition of the object to be heated, and it is difficult to automate, save labor, and make cooking unmanned. Ta.

An object of the present invention is to store in advance a pattern of changes in the thermal power of the burner or a pattern of changes in the temperature of the object to be heated, which are required depending on the purpose of cooking, etc., and to perform automatic control based on the stored data. Automate cooking,
Our goal is to provide gas stoves that save labor.

Means for Solving the L Problem] To achieve the above object, the gas stove of the present invention includes a proportional solenoid valve that proportionally controls the amount of gas according to the amount of current, a sensor that detects the temperature of the object to be heated, and a burner. a control pattern selection device that is capable of selecting one or more of the adjustment patterns of the heating power of the heated object or the temperature of the heated object;
A configuration including a control circuit that controls the amount of current according to the output of the control pattern selection device is adopted.

[Function and Effects of the Invention] The gas stove of the present invention can automatically adjust the burner thermal power or the temperature of the object to be heated based on data stored in advance in the storage means according to various cooking purposes, so that cooking can be automated. , labor saving can be achieved, and unmanned cooking can be expected.

[Example] A is a gas stove, 101 is its main burner, 102 is a pilot burner for smoothly igniting the main burner 101, and 103 is an ignition device for the pilot burner 102. 104 is a gas supply path of the gas conditioner OA, and 11 is a safety solenoid valve (hereinafter referred to as a safety valve), which is provided downstream of the main valve 12 for normal gas. Reference numeral 13 denotes a thermal lightning pair that is installed facing the main burner 101 to generate thermoelectromotive force to keep the safety valve 11 open during normal combustion in the main burner 101, and the safety valve is closed in the event of a misfire. 11 is automatically closed. 14 is a pilot valve that is temporarily opened during ignition operation, 15 is a push button for ignition, and 16 is a push button for extinguishing the fire. When the ignition button 15 is pressed, the main valve 12, the safety valve 11, and the pilot valve 14 open, and a spark discharge is generated in the ignition device 103 to ignite the ignition, and the safety valve 11 is maintained in an open state by the thermoelectromotive force. When the fire extinguishing button 16 is pressed, the pressed state of the side ignition button 15 is released and the fire is extinguished.

1 is provided between the safety valve 11 and the main burner 101, and as shown in FIG. 3, the valve body 1b is displaced according to the amount of current to the electromagnetic coil 1a, and the opening degree of the valve 1C is increased or decreased. This is a known proportional electromagnetic valve (hereinafter referred to as a proportional valve) in which the amount of gas is proportionally controlled, and in this embodiment, the amount of gas (flow) can be increased or decreased within a range of 0 to 2000 kilocalories (hereinafter simply referred to as calories). A gas bypass 2 is provided in parallel with the proportional valve 1 and ensures a gas field of 340 calories when the proportional valve 1 is closed.

A control circuit 3 controls the amount of current supplied to the proportional valve 1 according to an input signal, and has a configuration illustrated in FIG. 2. 5 is a heating power setting means manually operated by a gas stove user such as a cook to set the proportional valve 1 to the user's desired heating power; 6 is for detecting the temperature of an object to be heated such as a pot; The sensor 7 is manually operated by the user, and the proportional valve 1 is set so that the temperature of the heated object detected by the sensor 6 is the temperature or temperature range set by the user according to the purpose of cooking. Temperature setting means 8 sets the proportional valve 1 to, for example, heat the object at the maximum heating power at the beginning of heating, maintain the object at 100°C for a predetermined time after the stomach warms to 100°C, and then heat the object at 60°C. Combustion pattern selection means 30 includes a storage means for automatically controlling the proportional valve 1 so that the object to be heated can be heated in a predetermined pattern based on a large number of data stored in advance in the storage means 80, such as keeping warm. It is a control section including a logic circuit which inputs these outputs, controls the amount of current supplied to the proportional valve 1, and generates an output that closes the main valve 12.

FIGS. 4 and 5 show specific examples of the gas stove of the present invention.

In this stove [1, 4 is a case of the stove, and 40 is its front panel. In this embodiment, the firepower setting means 5 is an operating lever 51 provided at the top of the panel 40, and the lever setting position is converted into voltage by a variable resistor (not shown) linked to the lever 51. Control part 3
It is set to be input as 0. When the operating lever 51 is set to the right end in the drawing, the proportional valve 1 is fully closed, and the minimum heating power (340 hp) is achieved only by the bypass 2, and when the operating lever 51 is set to the left end in the drawing, the proportional valve 1 is fully opened. Maximum heat power (2200 calories) can be obtained.

In this embodiment, the sensor 6 is constructed by attaching a thermistor to the upper end of a rod 61 which is vertically movable upright in the center of the main burner 101 and is urged upward by a spring. It is pressed against the bottom of the container containing the object to be heated with a predetermined surface pressure.

In this specific example, the temperature setting means 7 includes a lever 71 provided at the bottom of the front panel 40, and means (not shown) for converting the set position of the lever 71 into a voltage signal. When the lever 11 is set to the left end in the figure, the set temperature is 50°C, which is necessary to keep the heated object warm, and when it is set to the right end, the upper limit temperature is set to 250°C, which is useful for preventing fires during tempura cooking.

In this embodiment, the control pattern selection means 8 includes a manual button consisting of four push buttons 81 to 84 provided on the front panel 40, and a storage means 85 in which the temperature control pattern of the object to be heated is stored.

A preset button 81 is used to control the proportional valve 1 based on pre-stored data, regardless of the set position of the lever 51 of the thermal power setting means 5 and the set position of the lever 11 of the temperature setting means 7. When this preset button 81 is pressed and the ignition device 103 is activated (the ignition button 15 is pressed), the proportional valve 1 is initially fully opened and the heated object is
The temperature is increased by rapid heating at the maximum heating power until the first (set) temperature (for example, 100° C.) is reached, and after the sensor 6 detects that the temperature has increased to the first temperature, the first temperature is maintained. Thus, the proportional valve 1 is throttled. Maintenance of this temperature is also achieved by repeating the valve opening of the proportional valve within a set range. Further, at this time, the proportional valve 1 may be fully closed to maintain heat using the minimum heating power. Furthermore, as shown in FIG.
A timer 31 may be provided to set the holding time, and when the timer 31 is provided, the proportional valve 1 is closed so that the temperature is lowered to the second temperature after the set time has elapsed, and the proportional valve 1 is closed to reduce the temperature to the second temperature. After the temperature has fallen to 30°C, the valve opening degree is further adjusted.
It becomes easy to set fine-grained control patterns such as maintaining the temperature.

82 is a rice cooking button provided exclusively for rice cooking.

When the rice cooking button 82 is pressed and the ignition button 15 is pressed, regardless of the setting positions of the heat setting means 5 and temperature setting means 7, as shown in FIG. The proportional valve 1 is set so as to obtain a heating power of
℃), assume that the rice is cooked and close proportional valve 1 to full open, and switch to low heat retention using only bypass 2, or switch to main valve 1.
Close 2 to stop combustion.

In this way, cooking can be performed automatically with only two operations: pushing the operation button and igniting the main burner 101. Therefore, cooking can be automated and labor-saving, and after the cook presses a predetermined button and lights the stove, cooking can be done even if the cook is away from the gas stove, making it possible to unattend cooking.

83 is an automatic extinguishing button, and when this button 83 is pressed and the main burner 101 is ignited, the main burner 10
The amount of calories generated in step 1 and the upper limit temperature of the heated object can be set as desired by the user, and when the upper limit temperature is reached, the main valve 12 is closed to stop combustion, and an automatic extinguishing lamp is used to stop combustion. Inform the user. At this time, other display means such as a sound generator may be used instead of the lamp.

84 is a heat retention button, and when this button 84 is pressed and the main burner 101 is ignited, the heat set by the heat setting means 5 heats the object to be heated to the temperature set by the temperature setting means 7, and the object is heated to the set temperature. After the temperature has been raised, combustion is performed repeatedly by turning the proportional valve 1 ON and OFF (fully open and fully closed) to maintain the temperature, or the opening amount of the proportional valve is automatically adjusted.

Although the above embodiments have shown automation of presets and rice cooking, it is natural that many other control patterns can be stored and selected.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing the configuration of the gas stove of the present invention;
The figure is a block diagram of the control circuit, Figure 3 is an enlarged sectional view of the proportional valve, Figure 4 is a perspective view of the gas stove, Figure 5 is a partially enlarged front view of the operation panel of the gas stove, and Figure 6 is the object to be heated. This is a time chart showing the temperature change and the firepower of the main burner.

Claims (1)

[Claims] 1) A proportional solenoid valve that proportionally controls the amount of gas according to the amount of current, a sensor that detects the temperature of the heated object, and a pattern for adjusting the thermal power of the burner or the temperature of the heated object.
A gas stove, comprising: a control pattern selection device that includes a storage means storing the above information, and is capable of selecting the pattern; and a control circuit that controls the amount of current according to the output of the control pattern selection device. 2) A proportional solenoid valve that proportionally controls the amount of gas according to the amount of current, a thermal power setting device that manually sets the gas amount of the proportional valve, a sensor that detects the humidity of the object to be heated, a temperature setting device, and a burner. The adjustment pattern of the heating power or the temperature of the heated object is 1.
a control pattern selection device that includes a storage means storing the above information and is capable of selecting the pattern; and a control pattern selection device that controls the amount of current according to the settings of the thermal power setting means, and controls the temperature set by the temperature setting means and the temperature detected by the sensor. and a control circuit that increases or decreases the amount of current by comparing the current amount and controls the amount of current in accordance with the selected control pattern independently of the settings in the thermal power setting means and the temperature setting means.