JP3655052B2 - Gas stove - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, after the gas stove is ignited, the gas valve is controlled to switch the heating power alternately between strength and weakness, or the amount of heat generated from the gas burner is adjusted by alternately repeating the generation and extinguishing of the strong fire. The present invention relates to a gas stove in which a cooking container is maintained at a substantially constant temperature.
[0002]
[Prior art]
In recent years, for example, there is one that can cope with Chinese food by using a high-heat burner having a maximum calorific value of 4600 kcal / h as a cooking gas stove. On the other hand, when the food reaches the desired temperature in the gas stove, when the boiling is completed, or when the tempura oil reaches the frying temperature, the burner is switched to low heat or extinguished for a while. With a temperature adjustment function that keeps these temperatures approximately constant by switching from low heat to high fire or reigniting from low to high when the temperature of cooking, hot water, oil, etc. drops There is also a gas stove.
[0003]
However, in the gas stove with the temperature control function, the temperature control device automatically performs the switching from the low heat to the high fire and the reignition from the fire extinguishing. When applied to the filter, suddenly a large high-fire combustion occurs, and there is a risk that the user may be surprised each time by the unexpectedly generated strong thermal power or re-combustion.
[0004]
[Problems to be solved by the invention]
The present invention prevents the user from being surprised even if the gas stove generates a high-firing combustion from a low fire due to the action of the temperature control function, or if a high-firing re-combustion occurs unexpectedly from the fire extinguishing state. Is an issue.
[0005]
[Means for Solving the Problems]
Among the means for solving the above-mentioned problems, the first means is a gas burner, a temperature sensor for detecting the temperature of the cooking container, and a gas interposed in the gas passage to the gas burner as described in claim 1. And a bypass passage that bypasses the gas valve, controls the gas valve based on a detection value of the temperature sensor, and alternately switches the combustion of the gas burner between a high flame and a low flame to increase the temperature of the cooking vessel. In the gas stove to be regulated, an alarm device is provided that operates in response to switching from a low flame to a high flame after starting combustion once.
[0006]
According to this means, an alarm is issued when the gas burner switches from low heat to high heat during cooking, so that it is possible to prepare for the increase in flame.
[0007]
Further, as described in claim 2, the second means is characterized in that, in claim 1, an alarm device is provided that operates before switching from low heat to high heat.
[0008]
According to this means, an alarm is issued before switching from a low fire to a high fire, so that the attitude to the increase of the flame can be sufficiently achieved.
[0009]
As described in claim 3, the third means includes a gas burner, a temperature sensor for detecting the temperature of the cooking container, a gas valve provided in a gas passage to the gas burner, and a detection value of the temperature sensor. In the gas stove that controls the gas valve and switches the gas burner alternately between combustion and extinguishing and regulates the temperature of the cooking vessel, when switching from extinguishing to burning after starting combustion, according to the switching An alarm device that operates is provided.
[0010]
According to this means, an alarm is issued when the gas burner switches from fire extinguishing to combustion during cooking, so that preparation for the start of combustion can be made.
[0011]
As described in claim 4, the fourth means is characterized in that, in claim 3, an alarm device is provided which operates before switching from fire extinguishing to combustion.
[0012]
According to this means, an alarm is issued before switching from fire extinguishing to combustion, so that the attitude to the start of combustion can be sufficiently achieved.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a gas stove schematically shown, 2 is a burner, 3 is a gas passage to the burner 2, and the gas passage 3 is provided with a main valve 4 and an electromagnetic gas valve 5; 3 is provided with a bypass 3a that bypasses the electromagnetic gas valve 5, and the bypass 3a is provided with an orifice 3b. When the main valve 4 is opened and the electromagnetic gas valve 5 is closed, a small amount of gas, for example, 400 kcal / h gas, is supplied from the bypass 3a to the burner 2 and small combustion occurs. When the electromagnetic gas valve 5 is opened in this state, a total of 4600 kcal / h of gas is supplied from the electromagnetic gas valve 5 and the bypass 3a to generate a strong fire. An electrode 7 is opposed to a part of the flame outlet 6 of the burner 2, a heat shield cylinder 8 and a temperature sensor 9 are arranged at the upper center of the burner 2, a virtues 10 are placed on the outside, and a pan P is placed thereon. Is done.
[0014]
Reference numeral 11 denotes a controller. The controller 11 is a reference set in advance with a signal corresponding to the temperature of the pan P detected by the temperature sensor 9 in order to keep the temperature of the food contained in the pan P at a predetermined temperature. Compared with the level, the electromagnetic gas valve 5 is controlled to open and close, and the alarm device 12 is further controlled.
[0015]
FIG. 2 is a diagram for explaining the operation of the controller 11. Curve A indicates the detected temperature of the temperature sensor 9, curve B indicates the open / close state of the gas valve 5, curve C indicates ON / OFF of the alarm, In the temperature, Th is a high reference temperature, Tl is a low reference temperature, and Ts is an alarm reference temperature. The controller 11 closes the gas valve 5 when the gas valve 5 is open and the sensor temperature becomes higher than the high reference temperature Th, and closes the gas valve 5 when the gas valve 5 is closed and the sensor temperature becomes lower than the low reference temperature Tl. Further, when the gas valve 5 is closed and the sensor temperature reaches the alarm reference temperature Ts, control is performed so that the alarm sounds.
[0016]
When the gas valve 5 in FIG. 1 is opened, the gas passing through the gas valve 5 and the bypass 3a is burnt by the burner 2 to increase the detected temperature, and the detected temperature of the temperature sensor 9 becomes the high reference temperature Th. Then, the gas valve 5 is closed and the low-burning combustion is performed in the burner 2 only by the gas passing through the bypass 3a, and the detected temperature is lowered because the natural cooling heat amount of the pan P is larger than the heating amount due to the low-fire combustion. Then, when the low reference temperature Tl is reached, the gas valve 5 is opened and high-fire combustion occurs again. By repeating this operation, cooking is performed at an average temperature of the reference temperatures Th and Tl which are high and low. In the curve A, the peaks and valleys that rise and fall from the straight line indicating the high and low reference temperatures Th and Tl are overshoots in which the temperature rises slightly after the gas valve 5 is closed and low heat is generated, and the gas valve 5 This is an undershoot in which the temperature does not rise immediately after the fire has opened and the fire has become strong.
[0017]
The alarm reference temperature Ts is set slightly higher than the low reference temperature Tl. When the temperature detected by the temperature sensor 9 falls below the alarm reference temperature Ts, an alarm is issued from the alarm device 12 and the gas valve 5 opens. Stop alarm when Tl is reached. The timing for stopping the alarm may be such that an alarm is issued and a timer, for example, a 2-second timer is operated, and the alarm is stopped when the timer ends. The end of the alarm in this case may be slightly shifted before and after the opening of the gas valve 5.
[0018]
Also, without setting the low reference temperature Tl, when the detected temperature falls below the alarm reference temperature Ts, an alarm is issued from the alarm device 12, the timer is activated, and when about 2 seconds have passed, the alarm is stopped and the timer is used. The gas valve 5 may be opened to generate a strong fire.
[0019]
Further, without setting the alarm reference temperature Ts, the gas valve 5 may be opened and an alarm may be generated when the detected temperature reaches the low reference temperature Tl. In this case, the alarm may be terminated by a timer. Alternatively, the alarm may be automatically stopped when the undershoot is over and the low reference temperature Tl is exceeded.
[0020]
As described above, since the alarm is issued every time the burner 2 generates a strong fire, the user can be prepared for a strong fire and can be careful about the flame F.
[0021]
The form shown in FIG. 3 is the one excluding the bypass 3a provided in the gas valve 5 in the form of FIG. 1, and the temperature is adjusted by burning or extinguishing the burner 2 by alternately opening and closing the gas valve 5. Thus, ignition is performed every time the gas valve 5 is opened, and an alarm is issued correspondingly. This embodiment also operates in the same manner as that shown in FIG. 2, but since there is no heating due to low heat, the time to decrease from Th to Tl is short, and the cycle of the action is accelerated.
[0022]
【The invention's effect】
As described above, according to the means of claim 1 or 2, since the alarm is issued every time the burner starts to burn from the low heat to the high fire, the gas can be used with sufficient attention to the flame. There is an effect that can be obtained.
[0023]
Further, according to the means of claim 3 or 4, since the alarm is issued every time the burner starts combustion after switching from the fire extinguisher state to the combustion, the gas stove that can pay sufficient attention to the flame is provided. There is an effect that can be obtained.
[Brief description of the drawings]
FIG. 1 is a layout diagram of elements according to an embodiment of the present invention. FIG. 2 is also an explanatory diagram of operation. FIG. 3 is a partial diagram of another embodiment.
2 Burner 3 Gas passage 3a Bypass 3b Orifice 4 Original valve 5 Gas valve 6 Flame port 7 Igniter 9 Temperature sensor 11 Controller 12 Alarm

Claims (4)

A gas burner, a temperature sensor for detecting the temperature of the cooking vessel, a gas valve provided in a gas passage to the gas burner, and a bypass passage for bypassing the gas valve, and is based on a detection value of the temperature sensor. In the gas stove that controls the gas valve and alternately switches the combustion of the gas burner between a high fire and a low fire to regulate the temperature of the cooking vessel, when switching from a low fire to a high fire after starting combustion, This is a gas stove that is equipped with an alarm that operates. The gas stove according to claim 1, further comprising an alarm that operates before switching from low heat to high heat. A gas burner, a temperature sensor for detecting the temperature of the cooking vessel, a gas valve provided in a gas passage to the gas burner, and controlling the gas valve based on a detection value of the temperature sensor, thereby burning and extinguishing the gas burner A gas stove that regulates the temperature of the cooking vessel by alternately switching to a gas stove that is provided with an alarm that operates in response to switching from fire extinguishing to combustion after starting combustion once B The gas stove according to claim 3, further comprising an alarm that operates before switching from fire extinguishing to combustion.

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