CN106524239A - Boiler-off monitoring device and boiler-off monitoring method for gas stove - Google Patents

Abstract

A pot leaving monitoring device and a pot leaving monitoring method of a gas stove are provided, the pot leaving monitoring device is arranged on a gas stove head and comprises a temperature sensor, a microswitch, a linkage mechanism and a control circuit. The bottom of the pot can press against or leave the temperature sensor, so that the temperature sensor can correspondingly touch or release the micro switch through the linkage mechanism to generate a switch signal. The control circuit is used for judging whether the cooker is pressed against the temperature sensor according to the switch signal so as to control the fire switch to adjust the fire of the gas stove head.

Description

Boiler-off monitoring device and boiler-off monitoring method for gas stove

technical field

The invention relates to a monitoring device and a monitoring method for leaving a pot, in particular to a burner group (gas burner head) used in a gas stove to judge whether the pot has left the pot setting device (stove frame) or the setting Disclosed are a pot-off monitoring device and a pot-off monitoring method of a pot-returning device.

Background technique

In common cooking operations, such as stewing food, boiling soup or boiling water, because of the long cooking time, the cook is usually unable to be present during the cooking process. If the cook is negligent due to forgetfulness or being busy with other things, Often let the fire continue to heat the pot for a long time, causing the water in the pot to dry out and form a state of empty cooking. In mild cases, the cooked food will be burnt and cannot be eaten. In severe cases, the high temperature of empty burning will ignite cooking. Items, even gas, cause fires and endanger public safety.

Known gas stoves can be provided with an air-proof device, which can be provided with a temperature sensor in the burner. When the pot is placed on the hob (pot setting device), the temperature sensor can be used to detect the temperature at the bottom of the pot. After the feedback, the program of the electronic control component judges and executes the built-in function of the program. Therefore, when the temperature of the pot rises abnormally, a signal can be sent to block the gas passage, thereby preventing the occurrence of fire.

However, in the anti-air burning device of the above-mentioned known gas stove, the action of the pan leaving the hob and putting it back into the hob is difficult for the program to judge. There is a gap, and procedural judgments are prone to problems. Furthermore, in the process of cooking, the user often needs to move the pot with both hands, so it is difficult to switch the firepower of the gas burner while moving the pot, for example, switch from high heat to low fire when removing the pot, Restore the original firepower when moving back to the pot.

In view of this, the inventor feels that the above-mentioned defects can be improved, and Naite devoted himself to research and combined with the application of theories, and finally proposed an invention with reasonable design and effective improvement of the above-mentioned defects.

Contents of the invention

The main purpose of the present invention is to provide a monitoring device and a monitoring method for leaving the pot of a gas stove, which can effectively judge whether the pot has left the pot setting device or put it back into the pot setting device, and then automatically switch the firepower as the pot moves. , to increase safety and convenience.

In order to achieve the above, the present invention provides a monitoring device for leaving the boiler of the gas stove, which is installed on the gas burner head. The monitoring device for leaving the boiler includes a temperature sensor, a micro switch, a linkage mechanism and a control circuit ; the temperature sensor can be arranged on the gas burner up and down telescopically, and is used to contact the bottom of a pot and sense the temperature of the pot; the micro switch is set under the gas burner; The mechanism is arranged between the temperature sensor and the micro switch, wherein the bottom of the pot can press against or leave the temperature sensor, so that the temperature sensor can correspondingly touch or release the micro switch through the linkage mechanism , to generate a switch signal; the control circuit is electrically coupled with the temperature sensor and the micro switch, and is used to judge whether the pot is pressed against the temperature sensor according to the switch signal, and then control a fire switch to adjust the The firepower of a gas burner.

In order to achieve the purpose described above, the present invention also provides a method for monitoring the leaving of the boiler of the gas stove, which includes: providing a monitoring device for leaving the boiler, installed on the gas burner head, wherein the monitoring device for leaving the boiler includes a temperature sensor, a micro The temperature sensor and the micro switch are respectively electrically coupled with the control circuit, and the temperature sensor can be arranged on the gas burner in an up and down telescopic manner, and the micro switch is arranged on the Below the gas burner, the interlocking mechanism is arranged between the temperature sensor and the micro switch, so that the bottom of the pot can press against or leave the temperature sensor, so that the temperature sensor can correspond to the temperature sensor through the interlocking mechanism. Touch or release the micro switch to generate a switch signal; according to the switch signal, it is judged whether the pot is pressed against the temperature sensor; if it is judged that the pot is not pressed against the temperature sensor, the fire switch is controlled to Maintain the firepower of the gas burner, and start counting a first preset time, and continue to judge whether the cooker is pressed against the temperature sensor according to the switch signal within the first preset time; if it is judged that the cooker is in If the temperature sensor is not pressed within the first preset time, control the fire switch to reduce the fire power of the gas burner, and start counting for a second preset time, and continue for the second preset time According to the switch signal, it is judged whether the pot is pressed against the temperature sensor; and if it is judged that the pot is not pressed against the temperature sensor within the second preset time, the fire switch is turned off.

To sum up, the monitoring device for leaving the pot and the monitoring method for leaving the pot of the gas stove of the present invention not only can contact the bottom of the pot and sense the temperature of the pot through the temperature sensor, but also can press the pot against or leave the temperature sensor , so that the temperature sensor can correspondingly touch or release the micro switch through the linkage mechanism to generate a switch signal to the control circuit, so that the control circuit can effectively judge whether the pot has left the pot setting device or put it back into the pot setting device, and then follows Automatically switch the firepower with the movement of the pot to increase safety and convenience.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of a boiler-leaving monitoring device for a gas stove according to the present invention.

Fig. 2 is a schematic plan view of the boiler-leaving monitoring device of the gas stove of the present invention.

Fig. 3 is a schematic plan view of the usage state of the boiler-leaving monitoring device of the gas stove according to the present invention.

Fig. 4 is a block diagram of the electric function of the boiler leaving monitoring device of the gas stove of the present invention.

Fig. 5 is a schematic flow chart of the monitoring method for leaving the boiler of the gas stove according to the present invention.

【Symbol Description】

Leaving the pot monitoring device 100

gas burner 1

Pot set 2

temperature sensor 3

Sensor head 31

Elastic elements 32

micro switch 4

linkage mechanism 5

1st rod 50

Second rod body 51

Supports 52

control circuit 6

Flame sensor 7

pot 8

Fire switch 9

First preset time T1

Second preset time T2

Steps S201～S215

detailed description

In order to further understand the characteristics and technical content of the present invention, the present invention will be described in detail by illustrating various exemplary embodiments of the present invention with drawings. Inventive concepts may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Therefore, the embodiments of the present invention are used for illustration rather than limitation. Except for the embodiments herein, the present invention can also be widely applied in other embodiments, and the present invention is not limited to any embodiment, and should be referred to as Depending on the scope of the attached patent application and its equivalent fields.

Referring to Fig. 1 to Fig. 4, the present invention provides a monitoring device 100 for leaving the pot of a gas stove, which is installed on a gas burner head 1, and a pot setting device 2 can be provided on the periphery of the gas burner head 1, and the pot setting device Can be devices such as stove frame, so that pot 8 is placed. Since the gas burner 1 and the pot setting device 2 belong to the known technology, and the present invention does not limit the type and structure of the gas burner 1 and the pot setting device 2 , no further description is given here.

The monitoring device 100 for leaving the pot includes a temperature sensor 3 , a micro switch 4 , a linkage mechanism 5 and a control circuit 6 . The monitoring device 100 for leaving the pot can also include a flame sensor 7 , the flame sensor 7 , the temperature sensor 3 , and the micro switch 4 are respectively electrically coupled to the control circuit 6 . Further, the flame sensor 7 can be, for example, a flame sensor needle or other flame detection elements, and the flame sensor 7 can be arranged near the gas burner head 1, so that the flame sensor 7 can be adjacent to the position of the fire, and the flame sensor 7 is actually The positions to be set are not limited and can be appropriately changed. The flame sensor 7 is used to sense the flame of the gas burner head 1, and outputs a flame signal to the control circuit 6 according to the sensing result, and the control circuit 6 is used to judge whether there is a flame according to the flame signal output by the flame sensor 7, and when judging When there is no flame, close a fire switch 9 to cut off the supply of gas. The fire switch 9 can include fire switch elements such as a switch knob, an electronic igniter, and a solenoid valve. The present invention does not limit the type and structure of the fire switch 9, so it will not be described in detail.

The temperature sensor 3 can be a thermocouple, thermal resistance, thermoelectric sensor or other electronic temperature detection elements. The temperature sensor 3 has a sensing head 31, the sensing head 31 is arranged on the gas burner head 1, the sensing head 31 is preferably but not limited to the center of the gas burner head 1, and the sensing head 31 can protrude from the set Top of pot device 2. The sensing head 31 can be used to contact the bottom of the pot 8, and it can sense the temperature of the pot for cooking food by the user. Once the temperature is abnormal, a signal can be sent to the control circuit 6, and the control circuit 6 is provided with an execution program. , through the analysis, induction and arrangement of the program, the overheating detection and other steps can be carried out to cut off the gas supply instead of empty burning, so as to ensure safety and prevent the occurrence of fire. The control circuit 6 may include control chips such as a microprocessor (MCU), a microcontroller (microcontroller) or a digital signal processor (DSP), and a driving circuit, but is not limited thereto.

An elastic element 32 can be provided inside the temperature sensor 3 , and the elastic element 32 is used for elastically supporting the temperature sensor 3 . The structure of the elastic element 32 is not limited, it can be a spring or a shrapnel, etc. The elastic element 32 abuts against the temperature sensor 3 , so that the sensing head 31 of the temperature sensor 3 remains attached to the bottom of the pot 8 . Specifically, one end of the elastic element 32 can be pressed against the temperature sensor 3, so that the temperature sensor 3 can be flexibly arranged on the gas burner head 1 up and down, and the sensing head 31 of the temperature sensor 3 can protrude from the position. Top of pot device 2. When the bottom of the pot 8 is pressed against the sensing head 31 of the temperature sensor 3, the temperature sensor 3 can be moved downwards, and the sensing head 31 of the temperature sensor 3 can be kept attached to it by the elastic force of the elastic element 32. The bottom of the pot 8, so that the temperature sensor 3 is used to detect the temperature at the bottom of the pot 8.

The micro switch 4 is arranged under the gas burner head 1 so that the micro switch 4 can be far away from the fire. The actual position of the micro switch 4 is not limited and can be changed appropriately. In this embodiment, the micro switch 4 is arranged under the gas burner 1 and outside the gas burner 1, so that the micro switch 4 can be further away from the fire, so as to increase the service life of the micro switch 4.

The linkage mechanism 5 is arranged between the temperature sensor 3 and the micro switch 4. When the bottom of the pot 8 is pressed against the sensing head 31 of the temperature sensor 3, when the temperature sensor 3 moves downward, the temperature sensor 3 can pass through The linkage mechanism 5 touches the micro switch 4 to generate a switch signal to the control circuit 6 . The structure of the linkage mechanism 5 is not limited, as long as it is arranged between the temperature sensor 3 and the micro switch 4 and can be used to actuate the micro switch 4 . In this embodiment, the linkage mechanism 5 includes a first rod body 50, a second rod body 51 and a support member 52, one end of the second rod body 51 is connected to the lower end of the first rod body 50, and the other end of the second rod body 51 is adjacent to the The micro switch 4 , and the second rod body 51 and the supporting member 52 can form a lever mechanism, which can be used to touch the micro switch 4 . Therefore, when the bottom of the pot 8 is pressed against the sensor head 31 of the temperature sensor 3 to move the temperature sensor 3 downward, the temperature sensor 3 can push the first rod body 50 to move the first rod body 50 downward, and then One end of the second rod body 51 can be linked to swing downward, and the other end of the second rod body 51 can be swung upward, so as to actuate the micro switch 4 . In addition, the micro switch 4 can be a normally closed or normally open micro switch, which can generate a switch signal of a high voltage level or a low voltage level to the control circuit by forming an on state or an off state 6. For example, when the cooking utensil 8 is pressed against the temperature sensor 3, the interlocking mechanism 5 touches the micro switch 4 to generate a switch signal of a high voltage level to the control circuit 6, and when the cooking utensil 8 is not pressed against the temperature sensor At 3 o'clock, that is, when the pot 8 is away from the temperature sensor 3, the interlocking mechanism 5 releases the micro switch 4, which can generate a switch signal of a low voltage level to the control circuit 6. Therefore, the control circuit 6 can judge whether the pot 8 is pressed against the temperature sensor 3 according to the switch signal, and then control the fire switch 9 to adjust the fire power of the gas burner 1 .

Wherein, the control circuit 6 can judge whether the pot 8 is pressed against the temperature sensor 3 according to the switch signal, and then control the fire switch 9 to adjust the fire power of the gas burner 1, as follows: when the control circuit 6 judges that the pot 8 is not pressed against the temperature When the sensor 3, the control circuit 6 controls the fire switch 9 to maintain the fire power of the gas burner 1, and the control circuit 6 starts counting a first preset time T1 (for example, 5 seconds), and within the first preset time T1 Continue to judge whether the pot 8 is pressed against the temperature sensor 3 according to the switch signal. Furthermore, when the control circuit 6 judges that the pot 8 is not pressed against the temperature sensor 3 within the first preset time T1, that is, when the count of the pot 8 expires in the first preset time T1 or counts down to the end When the zero hour has not been set back on the pot setting device 2, the control circuit 6 controls the fire switch 9 to reduce the fire power of the gas burner 1, and the control circuit 6 starts counting a second preset time T2 (for example, 1 minute), And continue to judge whether the pot 8 is pressed against the temperature sensor 3 according to the switch signal within the second preset time T2. Moreover, when the control circuit 6 judges that the pot 8 has been pressed against the temperature sensor 3 within the second preset time T2, that is, the pot 8 has been reset on the pot setting device 2 within the second preset time T2 , the control circuit 6 controls the fire switch 9 to increase the firepower of the gas burner 1. Conversely, when the control circuit 6 determines that the pot 8 is not pressed against the temperature sensor 3 within the second preset time T2, that is, the pot 8 has not been placed back in the pot setting device 2 within the second preset time T2. When on, control circuit 6 promptly closes fire switch 9, to cut off the supply of gas. Thereby, the away-from-the-pot monitoring device 100 can monitor the pot 8 on the pot-setting device 2 in real time, so as to realize protection from the pot and increase safety.

From the above-mentioned embodiments, the present invention can generalize a method for monitoring the gas stove leaving the boiler, which is suitable for the monitoring device for leaving the boiler described in the above-mentioned embodiments. Please refer to Figure 5 and, where appropriate, Figures 1 through 4. FIG. 5 is a schematic flow chart of a method for monitoring a gas stove leaving a pot provided by an embodiment of the present invention.

Firstly, in step S201 , a pot leaving monitoring device 100 is provided. Furthermore, the monitoring device 100 for leaving the pot is installed on the gas burner 1 , and the monitoring device 100 for leaving the pot includes a temperature sensor 3 , a micro switch 4 , a linkage mechanism 5 and a control circuit 6 . The pot leaving monitoring device 100 may further include a flame sensor 7 , and the flame sensor 7 , the temperature sensor 3 and the micro switch 4 are respectively electrically coupled to the control circuit 6 . The temperature sensor 3 is telescopically set on the gas burner 1 up and down, the micro switch 4 is set under the gas burner 1, and the linkage mechanism 5 is set between the temperature sensor 3 and the micro switch 4, so that a pot 8 The bottom of the bottom can press against or leave the temperature sensor 3, so that the temperature sensor 3 can correspondingly touch or release the micro switch 4 through the linkage mechanism 5, so as to generate a switch signal.

Next, in step S203, a fire switch 9 is turned on to make the gas burner 1 burn.

Then, in step S205 , the gas burner 1 is sensed by the flame sensor 7 to determine whether there is a flame in the gas burner 1 . Further, the control circuit 6 can drive the flame sensor 7 to sense the gas burner 1, so as to determine whether the gas burner 1 has a flame. If the control circuit 6 judges that there is no flame in the gas burner head 1 according to the electrical signal generated by the flame sensor 7, step S206 will be executed. On the contrary, if the control circuit 6 judges that there is a flame in the gas burner 1 according to the electric signal generated by the flame sensor 7, step S207 will be executed.

In step S206, the fire switch 9 is turned off to cut off the gas supply.

In step S207, it is determined whether the pot 8 is pressed against the temperature sensor 3 according to the switch signal. Furthermore, the control circuit 6 can judge whether the pot 8 is pressed against the temperature sensor 3 according to the switch signal. If the control circuit 6 judges that the pot 8 has pressed against the temperature sensor 3 according to the switch signal, then jump back to step S205. On the contrary, if the control circuit 6 judges that the pot 8 is not pressed against the temperature sensor 3 according to the switch signal, step S208 is executed.

In step S208, start counting a first preset time T1 (for example, 5 seconds), and execute step S209. Furthermore, when entering a short-term counting working state, the control circuit 6 can control the opening of the solenoid valve of the fire switch 9, so as to control the solenoid valve of the fire switch 9 to maintain a predetermined opening, so as to maintain the supply of gas flow, and then the firepower of the gas burner 1 is maintained at the original optimum firepower.

In step S209, continue to judge whether the pot 8 has pressed against the temperature sensor 3 within the first preset time T1 according to the switch signal. If the control circuit 6 judges according to the switch signal that the pot 8 has pressed against the temperature sensor 3 within the first preset time T1, then jump back to step S205. On the contrary, if the control circuit 6 judges according to the switch signal that the pot 8 is not pressed against the temperature sensor 3 within the first preset time T1, step S211 is executed.

In step S211, the fire switch 9 is controlled to reduce the fire power of the gas burner 1, and a second preset time T2 (for example, 1 minute) is started to be counted, and step S213 is executed. Furthermore, when entering a long-term counting working state, the control circuit 6 can control the opening of the solenoid valve of the fire switch 9 to reduce the flow of gas entering the pipeline, and then adjust the fire power of the gas burner 1 to The most appropriate smaller firepower.

In step S213, continue to judge whether the pot 8 has pressed against the temperature sensor 3 within the second preset time T2 according to the switch signal. If the control circuit 6 judges according to the switch signal that the pot 8 has pressed against the temperature sensor 3 within the second preset time T2, step S214 is executed. On the contrary, if the control circuit 6 judges according to the switch signal that the pot 8 is not pressed against the temperature sensor 3 within the second preset time T2, step S215 is executed.

In step S214, the fire switch 9 is controlled to increase the fire power of the gas burner 1, and the process returns to step S205. Furthermore, the control circuit 6 can control the opening of the solenoid valve of the fire switch 9 to increase the flow of gas entering the pipeline, and then adjust the fire power of the gas burner 1 to the most appropriate large fire power, so that the gas burner 1 can be operated again. cooking.

In step S215, the fire switch 9 is turned off to cut off the gas supply, and then the gas burner 1 is turned off, so as to ensure protection from the pot and increase safety.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of patent protection of the present invention. Therefore, all equivalent changes made by using the description and drawings of the present invention are also included in the scope of protection of the present invention. Inside, together with Chen Ming.

Claims (8)

1. a kind of gas oven from pot supervising device, installed in burner of gas range, it is characterised in that described Include from pot supervising device：

One temperature sensor, the temperature sensor can telescopically be arranged at the gas up and down Burner, to contact the bottom of a pan and sense the temperature of the pan；

One microswitch, the microswitch are arranged at the lower section of the burner of gas range；

One interlinked mechanism, the interlinked mechanism are arranged at the temperature sensor with the fine motion Between switch, the bottom of wherein described pan can compress or leave the temperature sensor, from And the temperature sensor is accordingly touched by the interlinked mechanism or is discharged described micro- Dynamic switch, to produce a switching signal；And

One control circuit, the control circuit and the temperature sensor and the microswitch According to the switching signal, electric property coupling, to judge whether the pan compresses the temperature Sensor, and then one firepower of control switchs the firepower to adjust the burner of gas range.

2. gas oven according to claim 1 from pot supervising device, it is characterised in that work as institute When stating control circuit and judging that the pan does not compress the temperature sensor, the control electricity The control firepower in road switchs the firepower to maintain the burner of gas range, and the control circuit One first Preset Time is started counting up, and is continued according to described in first Preset Time Switching signal judges whether the pan compresses the temperature sensor.

3. gas oven according to claim 2 from pot supervising device, it is characterised in that work as institute State control circuit and judge that the pan does not compress the temperature in first Preset Time During sensor, the control circuit controls the firepower switch to reduce the burner of gas range Firepower, and the control circuit starts counting up one second Preset Time, and it is pre- in described second If continuing to judge whether the pan compresses the temperature and pass according to the switching signal in the time Sensor, wherein described second Preset Time are more than first Preset Time.

4. gas oven according to claim 3 from pot supervising device, it is characterised in that work as institute State control circuit and judge that the pan does not compress the temperature in second Preset Time During sensor, the control circuit closes the firepower switch.

5. gas oven according to claim 3 from pot supervising device, it is characterised in that work as institute State control circuit and judge that the pan has compressed the temperature in second Preset Time During sensor, the control circuit controls the firepower switch to increase the burner of gas range Firepower.

6. a kind of gas oven from pot monitoring method, it is characterised in that the gas oven from pot monitor Method includes：

One is provided from pot supervising device, it is installed in burner of gas range, wherein described to fill from pot monitoring Put and include temperature sensor, microswitch, interlinked mechanism and control circuit, the temperature Sensor and the microswitch respectively with the control circuit electric property coupling, and the temperature Sensor telescopically can be arranged on the burner of gas range up and down, and the microswitch is arranged at The lower section of the burner of gas range, the interlinked mechanism be arranged at the temperature sensor with it is described Between microswitch, the bottom of pan is enable to compress or leave the temperature sensor, so as to The temperature sensor is enable accordingly to touch by the interlinked mechanism or discharge the fine motion Switch, to produce a switching signal；

According to the switching signal, to judge whether the pan compresses the temperature sensing Device；

If judging, the pan does not compress the temperature sensor, control firepower switch with The firepower of the burner of gas range is maintained, and starts counting up one first Preset Time, and in described Continue according to the switching signal judges whether the pan compress in first Preset Time Temperature sensor；

If judging, the pan does not compress the temperature sensing in first Preset Time Device, then control the firepower and switch firepower to reduce the burner of gas range, and start counting up One second Preset Time, and continue according to the switching signal in second Preset Time Judge whether the pan compresses the temperature sensor；And

If judging, the pan does not compress the temperature sensing in second Preset Time Device, then cut out the firepower switch.

7. gas oven according to claim 6 from pot monitoring method, it is characterised in that it is described Gas oven also includes from pot monitoring method：The gas oven is sensed by a flame sensor Head, to judge whether the burner of gas range has flame, if judging the burner of gas range without flame, The firepower switch is closed then.

8. gas oven according to claim 6 from pot monitoring method, it is characterised in that it is described Gas oven also includes from pot monitoring method：If judging the pan when described second is default It is interior to have compressed the temperature sensor, then control the firepower and switch to increase the gas The firepower of burner.