GAS COOKTOP FIRE PREVENTION AND ALARM SYSTEM
A home cooking appliance includes a gas surface cooking unit and a gas cooktop fire prevention system. The gas surface cooking unit includes a gas burner, a support surface configured to support a cooking vessel above the gas burner, a cooktop floor below the gas burner, and a gas supply line supplying gas to the gas burner. The gas cooktop fire prevention system includes a solenoid valve on the gas supply line and a gas supply cutoff unit configured to detect a temperature of the cooktop floor and close the solenoid valve when the detected temperature of the cooktop floor is equal to or greater than a predetermined threshold temperature of the cooktop floor, thereby cutting off a supply of the gas through the gas supply line to the gas burner.
The present invention is directed to a gas cooktop fire prevention and alarm system, and more particularly, to a domestic home cooking appliance including a cooktop having a gas cooktop fire prevention and alarm system.
BACKGROUND OF THE INVENTIONSome modern domestic gas surface cooking units, such as a gas range, stove, or cooktop, have one or more gas burners for heating foodstuff in a cooking vessel, such as a pot, pan, kettle, etc., and commonly include a support surface, such as a cooking grate, griddle, etc., positioned over one ore more burners for supporting the cooking vessel over a burner. Some cooking ranges or cooktops include a top sheet or spill tray for catching spills, overflows, etc. from the cooking vessel and for concealing other components of the cooking unit, such as gas supply lines.
SUMMARY OF THE INVENTIONThe present invention recognizes that, in some circumstances, a temperature of the cooking vessel, or a temperature of a cooking oil, fat, foodstuff, etc. in a cooking vessel can approach or reach an autoignition point, which may result in a fire event that could lead to a potentially destructive or deadly fire, particularly in a circumstance when a cooking vessel is left unattended or unsupervised on a gas surface cooking unit. Currently, a typical solution for preventing a fire associated with a cooking event is a smoke detector/alarm in the home, which alerts a user in a home or residence upon the occurrence of an active fire event (i.e., after an active fire event is in progress). The present invention recognizes that a risk of a fire event can be prevented or minimized by proactively shutting off a flow of gas to the one or more gas burners before a cooking vessel, or foodstuff, fat, oil, etc. in the cooking vessel, approach or reach conditions for autoignition of common cooking fats, oils, etc. (e.g., canola oil), which are commonly being heated or cooked in a cooking vessel.
The present invention further recognizes that some conventional solutions attempt to prevent a cooking vessel, oil, or fat, etc. from approaching or reaching conditions for autoignition before a fire event occurs by directly monitoring or detecting the temperature of the cooking vessel to detect a pre-ignition point using one or more obtrusive temperature sensors that project from or extend through an opening in the cooktop floor (e.g., a spill tray or top sheet of the cooktop), project from or extend around or through an opening in a burner or burner cap, or project from or extend around or through an opening in a support surface (e.g., cooking grate) for supporting the cooking vessel, such that a temperature sensor is placed in direct contact with a surface of the cooking vessel to monitor the temperature of the cooking vessel. For example, as shown in
To solve these and other problems, the present invention provides a home cooking appliance having a gas surface cooking unit and a gas cooktop fire prevention system that can simply, easily, and proactively prevent the autoignition of many or most common cooking oils and fats resulting from overheating a cooking vessel on the gas surface cooking unit before such autoignition occurs, while at the same time providing a gas cooktop fire prevention system that can be implemented easily and inexpensively without costly or complex control systems, and that does not detract from aesthetics of the appliance or hinder the cleanability of the appliance.
In an exemplary embodiment, a home cooking appliance includes a gas surface cooking unit and a gas cooktop fire prevention system. The gas surface cooking unit includes a gas burner, a support surface configured to support a cooking vessel above the gas burner, a cooktop floor (e.g., a spill tray or top sheet of the cooktop) below the gas burner, and a gas supply line supplying gas to the gas burner. The gas cooktop fire prevention system includes a solenoid valve on the gas supply line, and a gas supply cutoff unit configured to detect a temperature of the cooktop floor and close the solenoid valve when the detected temperature of the cooktop floor is equal to or greater than a predetermined threshold temperature of the cooktop floor, thereby cutting off a supply of the gas through the gas supply line to the gas burner. The predetermined threshold temperature of the cooktop floor can be selected to correspond or correlate to a predetermined temperature of a cooking vessel to be supported by the support surface (e.g., a cooking grate) that is less than a predetermined auto-ignition temperature of one or more types of foodstuff, fat, oil, liquid, etc., to be heated or cooked (e.g., commonly heated or cooked) in a cooking vessel by the gas burner.
The gas supply cutoff unit can include, for example, a high temperature cutout switch (HTC). The High Temperature Cutout switch (HTC) can be, for example, a thermal reset or thermal cutout such as a bimetal switch that opens (i.e., automatically opens) and cuts power to the solenoid valve when a predetermined temperature is reached or exceeded. In other embodiments, the gas supply cutoff unit can include, for example, another type of thermal switch such as a Positive Temperature Coefficient (PTC) thermistor, which has a “switch” temperature at which the resistance suddenly rises rapidly, limiting the current through a circuit. When a PTC thermistor is used in conjunction, for example, with a thermistor relay, the PTC can be configured to cut power to the solenoid valve at a predetermined temperature of the cooktop floor. In other examples, the gas supply cutoff unit can utilize a temperature sensor (e.g., resistance thermometer, resistance temperature detector (RTD) or element, thermocouple, etc.) to continuously monitor a temperature of the cooktop floor. In these examples, the temperature sensor can be coupled, for example, to a control unit or control circuit configured to activate, for example, a relay connected to the gas line solenoid valve to cut power to the solenoid valve at a predetermined temperature of the cooktop floor.
For example, in one example, the gas supply cutoff unit of the gas cooktop fire prevention system utilizes a high temperature cutout switch (HTC) mounted underneath the cooktop floor. As the temperature of the cooking vessel (e.g., pan temperature) rises, radiant heat off the cooking vessel heats up the cooktop floor below the pan. The high temperature cutout switch (HTC), or the like, is selected such that, at a predetermined threshold temperature of the cooktop floor, which correlates to a predetermined temperature of the cooking vessel, the switch in the high temperature cutout switch (HTC) will open (i.e., automatically open) and cut power to a solenoid valve on the gas supply line, thereby closing the solenoid valve and cutting of the supply of gas through the gas supply line. The solenoid valve may be on a main gas line to the entire appliance, on a gas manifold, or on a gas line supplying gas to a specific burner of the appliance, or multiple solenoid valves may be provided at various locations for a plurality of gas burners. With power cut to the solenoid valve, the gas supply to the burner is shut off, preventing or limiting further heating of the cooking vessel, or fat, oil, etc. in the cooking vessel, thereby limiting the temperature to below an auto-ignition temperature of the oil, fat, etc. being heated or cooked in the cooking vessel. In this way, the gas cooktop fire prevention system can cut off a supply of gas to one or more gas burners before a temperature of the cooking vessel, or foodstuff, fat, oil, etc. in the cooking vessel, approaches or reaches conditions for autoignition of common cooking fats, oils, etc. (e.g., canola oil), which are commonly being heated or cooked in a cooking vessel.
In another example, the gas cooktop fire prevention system utilizes a temperature sensor (e.g., resistance thermometer, resistance temperature detector (RTD) or element, thermocouple, etc.) to continuously monitor a temperature of the cooktop floor. In these examples, the temperature sensor can be coupled, for example, to a control unit or control circuit configured to activate, for example, a relay connected to the gas line solenoid valve. At a predetermined threshold temperature of the cooktop floor detected by the temperature sensor, the control circuit can cause the relay to cut power to the solenoid valve on the gas supply line. As in other examples, the solenoid valve may be on a main gas line to the entire appliance, on a gas manifold, or on a gas line supplying gas to a specific burner of the appliance, or multiple solenoid valves may be provided at various locations for a plurality of gas burners. In this way, the gas cooktop fire prevention system can cut off a supply of gas to one or more gas burners before a temperature of the cooking vessel, or foodstuff, fat, oil, etc. in the cooking vessel, approaches or reaches conditions for autoignition of common cooking fats, oils, etc. (e.g., canola oil), which are commonly being heated or cooked in a cooking vessel.
In some examples, the gas cooktop fire prevention system (e.g., utilizing a high temperature cutout switch (HTC), a positive temperature coefficient (PTC) thermistor, a temperature sensor such as a resistance thermometer, resistance temperature detector (RTD) or element, thermocouple, etc., or the like) can be configured to communicate (e.g., wired or wirelessly) with an alarm unit or “signaling” system to alert a user that there has been a high temperature incident (e.g., an incident in which the temperature of the cooktop floor is equal to or greater than the predetermined threshold temperature of the cooktop floor). The alarm unit can include, for example, one or more of an indicator light, an audible signal, a displayed alert message, or electronic message (e.g., a text message, app alert, email message, and/or phone call, etc.).
In this way, the examples of the present invention can provide a home cooking appliance having a gas surface cooking unit and a gas cooktop fire prevention system that can simply, easily, and proactively prevent the autoignition of many or most common cooking oils and fats resulting from overheating a cooking vessel on the gas surface cooking unit before such autoignition occurs, thereby preventing or minimizing a risk of a fire event, such as in circumstances where an unattended cooking vessel is left over a gas burner, before it occurs. The examples of the present invention can provide a gas cooktop fire prevention system that can be implemented easily and inexpensively without costly or complex control systems, and that does not detract from aesthetics of the appliance or hinder the cleanability of the appliance. The examples of the gas cooktop fire prevention system do not require obtrusive temperature sensors that project from or extend through the cooktop floor, thereby reducing the possibility of spills or debris from undesirably passing below the cooktop floor, reducing areas where debris can collect, and improving cleanability. Furthermore, by being mounted under the cooktop floor, the examples of the gas cooktop fire prevention system according to the invention can be hidden from view by a user, thereby improving aesthetics of the appliance.
Other features and advantages of the present invention will become apparent to those skilled in the art upon review of the following detailed description and drawings.
These and other aspects and features of embodiments of the present invention will be better understood after a reading of the following detailed description, together with the attached drawings, wherein:
The present invention now is described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
With reference to
As schematically illustrated in
The gas supply cutoff unit 202 can be configured to detect the temperature of the cooktop floor 106, for example, using one or more sensors, temperature dependent switches, etc. In an example, the gas supply cutoff unit 202 can include, for example, a high temperature cutout switch (HTC), which can be, for example, a thermal reset or thermal cutout such as a bimetal switch that opens (i.e., automatically opens) and cuts power to the solenoid valve when a predetermined temperature is reached or exceeded. In other embodiments, the gas supply cutoff unit 202 can include, for example, another type of thermal switch such as a Positive Temperature Coefficient (PTC) thermistor, which has a “switch” temperature at which the resistance suddenly rises rapidly, limiting the current through a circuit. When a PTC thermistor is used in conjunction, for example, with a thermistor relay, the PTC of the gas supply cutoff unit 202 can be configured to cut power to the solenoid valve 204 at a predetermined temperature of the cooktop floor 106. In other examples, the gas supply cutoff unit 202 can include a temperature sensor (e.g., resistance thermometer, resistance temperature detector (RTD) or element, thermocouple, etc.) to continuously monitor a temperature of the cooktop floor 106.
One or more components (e.g., temperature dependent switch(es), sensor(s), etc.) of the gas supply cutoff unit 202 can be mounted underneath the cooktop floor 106 and in thermal contact with the cooktop floor 106, such as mounted directly to, or in direct thermal contact with, an underside surface of the cooktop floor 106. In operation, the gas supply cutoff unit 202 is configured to interrupt (e.g., automatically interrupt) a power supply 206 to the solenoid valve 204 in the event that a temperature of the cooktop floor 106 detected by the one or more sensors of the gas supply cutoff unit 202 reaches or exceeds (i.e., is equal to or greater than) a predetermined threshold temperature of the cooktop floor 106, thereby closing the solenoid valve 204 and cutting off the supply of the gas through the gas supply line 108 to the gas burner 102. The predetermined threshold temperature of the cooktop floor 106 can be selected to correspond or correlate to a predetermined temperature of a cooking vessel 300 supported by the support surface 104 (e.g., cooking grate) that is less than an auto-ignition temperature of one or more types of foodstuff, oil, liquid, etc., to be heated or cooked (e.g., commonly heated or cooked) in a cooking vessel 300 by the gas burner 102.
As schematically illustrated in
As schematically illustrated in
In an example illustrated in
In operation, when the temperature of the high temperature cutout switch 210 on the underside of the cooktop floor 106 reaches or exceeds (i.e., is equal to or greater than) a predetermined threshold temperature, the high temperature cutout switch 210 opens, thereby interrupting the power supply 206 to the solenoid valve 204 and cutting off the flow of gas through the gas supply line 108 to the gas burner 102. The predetermined threshold temperature of the cooktop floor 106 can be selected to correspond or correlate to a predetermined temperature of a cooking vessel 300 supported by the support surface 104 (cooking grate) that is less than an auto-ignition temperature of one or more types of foodstuff, oil, liquid, etc., to be heated or cooked (e.g., common types of foodstuff, oil, liquid, etc. to be heated or cooked) in a cooking vessel 300 by the gas burner 102.
In some examples, when the temperature of the high temperature cutout switch 210 on the underside of the cooktop floor 106 is less than the predetermined threshold temperature, the high temperature cutout switch 210 can be configured such that it re-closes, thereby reconnecting the power supply 206 to the solenoid valve 204 and enabling the flow of gas through the gas supply line 108 to the gas burner 102. In other examples, the gas supply cutoff unit 202 can include a reset unit 207, such as a reset switch, button, etc., configured for a user to manually reset or re-close the high temperature cutout switch 210, and thereby re-open the solenoid valve 204. When the temperature of the high temperature cutout switch 210 on the underside of the cooktop floor 106 is less than the predetermined threshold temperature, the reset unit 207, such as a reset switch, button, etc., can be actuated by a user, thereby re-opening the solenoid valve 204 by reconnecting the power supply 206 to the solenoid valve 204 and enabling the flow of gas through the gas supply line 108 to the gas burner 102. As schematically illustrated in
In an example illustrated in
In operation, the positive temperature coefficient thermistor (PTC thermistor) 211 is used in conjunction with the thermistor relay 213 to interrupt the power supply 206 to the solenoid valve 204 when a temperature of the cooktop floor 106 detected by the temperature sensor 212 is equal to or greater than a predetermined threshold temperature of the cooktop floor 106, thereby closing the solenoid valve 204 and cutting off the supply of the gas through the gas supply line 108 to the gas burner 102. Similar to other examples, the predetermined threshold temperature of the cooktop floor 106 can be selected to correspond or correlate to a predetermined temperature of a cooking vessel 300 supported by the support surface 104 (cooking grate) that is less than an auto-ignition temperature of one or more types of foodstuff, oil, liquid, etc., to be heated or cooked (e.g., common types of foodstuff, oil, liquid, etc. to be heated or cooked) in a cooking vessel 300 by the gas burner 102.
In the example shown in
In an example illustrated in
In operation, the control circuit 214 is configured to control the relay 216 to interrupt the power supply 206 to the solenoid valve 204 when a temperature of the cooktop floor 106 detected by the temperature sensor 212 is equal to or greater than a predetermined threshold temperature of the cooktop floor 106, thereby closing the solenoid valve 204 and cutting off the supply of the gas through the gas supply line 108 to the gas burner 102. Similar to other examples, the predetermined threshold temperature of the cooktop floor 106 can be selected to correspond or correlate to a predetermined temperature of a cooking vessel 300 supported by the support surface 104 (cooking grate) that is less than an auto-ignition temperature of one or more types of foodstuff, oil, liquid, etc., to be heated or cooked (e.g., common types of foodstuff, oil, liquid, etc. to be heated or cooked) in a cooking vessel 300 by the gas burner 102.
In some examples, the control circuit 214 can be configured to control the relay 216 to reconnect (e.g., automatically reconnect) the power supply 206 to the solenoid valve 204 when the temperature of the cooktop floor 106 detected by the temperature sensor 212 is less than the predetermined threshold temperature of the cooktop floor 106, thereby opening the solenoid valve 204 and enabling the supply of the gas through the gas supply line 108 to the gas burner 102. In other examples, the control circuit 214 can be configured to control the relay 216 to reconnect the power supply 206 to the solenoid valve 204 when the temperature of the cooktop floor 106 detected by the temperature sensor 212 is less than the predetermined threshold temperature of the cooktop floor 106 and upon actuation of a reset unit 207, such as a reset switch, button, etc., by a user, thereby opening the solenoid valve 204 and enabling the supply of the gas through the gas supply line 108 to the gas burner 102. As schematically illustrated in
As shown by the dashed lines in
In one example, a dedicated gas supply cutoff unit 202 (including the one or more components, e.g., temperature sensing components such as temperature dependent switch(es), temperature sensor(s), etc.) can be provided for an individual gas burner 102, or a plurality of gas supply cutoff units 202 (e.g., gas supply cutoff sub-units) can be provided, such as one unit 202 (e.g., gas supply cutoff sub-unit) for each individual gas burner (e.g., 102, 102a). As exemplarily shown in
With reference to other examples in
With reference to other examples in
With reference again to other examples shown in
The example arrangements can be provided individually or in combination with one or more of the other examples. One of ordinary skill in the art will recognize that other arrangements of the gas supply cutoff unit on the cooktop floor with respect to one or more burners also are possible within the spirit and scope of the invention.
With reference again to
The present invention has been described herein in terms of several preferred embodiments. However, modifications and additions to these embodiments will become apparent to those of ordinary skill in the art upon a reading of the foregoing description. It is intended that all such modifications and additions comprise a part of the present invention to the extent that they fall within the scope of the several claims appended hereto.
Claims
1. A home cooking appliance, comprising:
- a gas surface cooking unit including: a gas burner; a support surface configured to support a cooking vessel above the gas burner; a cooktop floor below the gas burner; and a gas supply line supplying gas to the gas burner; and
- a gas cooktop fire prevention system including: a solenoid valve on the gas supply line; and a gas supply cutoff unit configured to detect a temperature of the cooktop floor and close the solenoid valve when the detected temperature of the cooktop floor is equal to or greater than a predetermined threshold temperature of the cooktop floor, thereby cutting off a supply of the gas through the gas supply line to the gas burner.
2. The home cooking appliance of claim 1, wherein the gas supply cutoff unit further comprises:
- an alarm unit configured to provide an alert to a user when the temperature of the cooktop floor is equal to or greater than the predetermined threshold temperature of the cooktop floor.
3. The home cooking appliance of claim 1, wherein the gas supply cutoff unit includes a high temperature cutout switch (HTC switch) underneath the cooktop floor, the high temperature cutout switch (HTC switch) configured to interrupt a power supply to the solenoid valve when the temperature of the cooktop floor detected by the high temperature cutout switch (HTC switch) is equal to or greater than the predetermined threshold temperature of the cooktop floor, thereby closing the solenoid valve and cutting off the supply of the gas through the gas supply line to the gas burner.
4. The home cooking appliance of claim 3, wherein the gas supply cutoff unit further comprises:
- an alarm unit in communication with the high temperature cutout switch (HTC switch),
- wherein the alarm unit is configured to provide an alert to a user when the temperature of the cooktop floor detected by the high temperature cutout switch (HTC switch) is equal to or greater than the predetermined threshold temperature of the cooktop floor.
5. The home cooking appliance of claim 1, wherein the gas supply cutoff unit includes a positive temperature coefficient thermistor (PTC thermistor) underneath the cooktop floor, the positive temperature coefficient thermistor (PTC thermistor) configured to interrupt a power supply to the solenoid valve when the temperature of the cooktop floor detected by the positive temperature coefficient thermistor (PTC thermistor) is equal to or greater than the predetermined threshold temperature of the cooktop floor, thereby closing the solenoid valve and cutting off the supply of the gas through the gas supply line to the gas burner.
6. The home cooking appliance of claim 5, wherein the gas supply cutoff unit further comprises:
- an alarm unit in communication with the positive temperature coefficient thermistor (PTC thermistor),
- wherein the alarm unit is configured to provide an alert to a user when the temperature of the cooktop floor detected by the positive temperature coefficient thermistor (PTC thermistor) is equal to or greater than the predetermined threshold temperature of the cooktop floor.
7. The home cooking appliance of claim 1, wherein the gas supply cutoff unit comprises a temperature sensor configured to continuously monitor the temperature of the cooktop floor.
8. The home cooking appliance of claim 7, wherein the gas supply cutoff unit further comprises:
- a control circuit in communication with the temperature sensor;
- a relay in communication with the control circuit, the relay configured to connect a power supply to the solenoid valve,
- wherein the control circuit is configured to control the relay to interrupt the power supply to the solenoid valve when the temperature of the cooktop floor detected by the temperature sensor is equal to or greater than the predetermined threshold temperature of the cooktop floor, thereby closing the solenoid valve and cutting off the supply of the gas through the gas supply line to the gas burner.
9. The home cooking appliance of claim 8, wherein the gas supply cutoff unit further comprises:
- an alarm unit in communication with the control circuit,
- wherein the control unit activates the alarm unit to provide an alert to a user when the temperature of the cooktop floor is equal to or greater than the predetermined threshold temperature of the cooktop floor.
10. The home cooking appliance of claim 3, wherein the high temperature cutout switch (HTC switch) is mounted to an underside surface of the cooktop floor in thermal contact with the underside surface of the cooktop floor.
11. The home cooking appliance of claim 5, wherein the positive temperature coefficient thermistor (PTC thermistor) is mounted to an underside surface of the cooktop floor in thermal contact with the underside surface of the cooktop floor.
12. The home cooking appliance of claim 7, wherein the temperature sensor is mounted to an underside surface of the cooktop floor in thermal contact with the underside surface of the cooktop floor.
13. The home cooking appliance of claim 1, wherein, after the solenoid valve is closed, the gas supply cutoff unit is configured to re-open the solenoid valve when the detected temperature of the cooktop floor is less than the predetermined threshold temperature of the cooktop floor, thereby reconnecting the supply of the gas through the gas supply line to the gas burner.
14. The home cooking appliance of claim 1, wherein the gas supply cutoff unit further comprises a reset switch configured to re-open the solenoid valve upon being actuated by a user.
15. The home cooking appliance of claim 3, wherein, after the solenoid valve is closed, the high temperature cutout switch (HTC switch) reconnects the power supply to the solenoid valve when the temperature of the cooktop floor detected by the high temperature cutout switch (HTC switch) is less than the predetermined threshold temperature of the cooktop floor, thereby re-opening the solenoid valve and reconnecting the supply of the gas through the gas supply line to the gas burner.
16. The home cooking appliance of claim 3, wherein the gas supply cutoff unit further comprises a reset switch configured to re-set the high temperature cutout switch (HTC switch) upon being actuated by a user.
17. The home cooking appliance of claim 5, wherein, after the solenoid valve is closed, the positive temperature coefficient thermistor (PTC thermistor) reconnects the power supply to the solenoid valve when the temperature of the cooktop floor detected by the positive temperature coefficient thermistor (PTC thermistor) is less than the predetermined threshold temperature of the cooktop floor, thereby re-opening the solenoid valve and reconnecting the supply of the gas through the gas supply line to the gas burner.
18. The home cooking appliance of claim 5, wherein the gas supply cutoff unit further comprises a reset switch configured to reset the positive temperature coefficient thermistor (PTC thermistor) upon being actuated by a user.
19. The home cooking appliance of claim 8, wherein, after the solenoid valve is closed, the control circuit is configured to control the relay to at least one of:
- automatically reconnect the power supply to the solenoid valve when the temperature of the cooktop floor detected by the temperature sensor is less than the predetermined threshold temperature of the cooktop floor, and
- reconnect the power supply to the solenoid valve when the temperature of the cooktop floor detected by the temperature sensor is less than the predetermined threshold temperature of the cooktop floor and in response to a reset switch being actuated by a user,
- thereby re-opening the solenoid valve and reconnecting the supply of the gas through the gas supply line to the gas burner.
20. The home cooking appliance of claim 1, wherein the gas surface cooking unit includes a second gas burner and the cooktop floor extends below the second gas burner, and
- wherein the gas supply cutoff unit includes a first gas supply cutoff sub-unit and a second gas supply cutoff sub-unit, the first gas supply cutoff sub-unit configured to detect the temperature of the cooktop floor at the gas burner and the second gas supply cutoff sub-unit configured to detect the temperature of the cooktop floor at the second gas burner.
21. The home cooking appliance of claim 1, wherein the gas surface cooking unit includes a second gas burner and the cooktop floor extends below the second gas burner, and
- wherein the gas supply cutoff unit is configured to detect the temperature of the cooktop floor at a location between the gas burner and the second gas burner and close the solenoid valve when the detected temperature of the cooktop floor is equal to or greater than the predetermined threshold temperature of the cooktop floor.
Type: Application
Filed: Dec 10, 2018
Publication Date: Jun 11, 2020
Inventors: Garrett Bentley (Knoxville, TN), Brian Silva (Knoxville, TN)
Application Number: 16/214,190