KR20110045527A - A gas range for preventing overheating and a method for preventing overheating of a gas range - Google Patents

Abstract

PURPOSE: An overheat check method of a gas range and an over-heating prevention gas range is provided to block the gas supply in the over-heating of a cooker. CONSTITUTION: An over-heating prevention gas range comprises A gas supply pipe, a gas opening and closing part, a cup part(10), a burner head(20), an overheat protection sensor(30) and a controller. The gas opening and closing part opens and closes the gas supply pipe. A through opening is formed in center of the cup part. The burner head is covered with the cup part. A gas inlet, located in center of the burner head, is connected to the gas supply pipe. The overheat protection sensor is touched with the floor side of cooker and measures the temperature of the cooker. The controller receives a closing signal, when the temperature of the cooking cavity is over heated, and closes the gas opening and closing part.

Description

Overheat prevention gas stove and overheat prevention method {A GAS RANGE FOR PREVENTING OVERHEATING AND A METHOD FOR PREVENTING OVERHEATING OF A GAS RANGE}

The present invention relates to an overheat prevention gas range and a method for preventing overheating of a gas range for preventing the cooking vessel from overheating when cooking with a gas range, and more particularly, when the cooking vessel is overheated by measuring the temperature of the cooking vessel. The present invention relates to an overheat prevention gas range and a method for preventing overheating of a gas range for preventing a gas supply from being overheated.

The number of explosions caused by gas ranges is increasing year by year, which results in serious fires and the loss of precious lives. In order to prevent such an explosion accident, many safety devices of various types are installed in the gas range.

Explosions caused by gas ranges are largely divided into explosion accidents caused by continuous outflow of gas while the flames of the gas range are extinguished and fire accidents caused by overheating of the cooking vessels caused by continuous heating of the cooking vessels. Can lose.

Therefore, if both of these accidents can be prevented, the explosion and fire accidents caused by the gas range are expected to be considerably reduced, and in particular, the occurrence of fires due to the neglect of the cooking vessel during cooking is also expected to be significantly reduced. Development is required in the industry.

The purpose of the overheat prevention gas range and the overheat prevention method of the gas range according to the present invention is to prevent the cooking vessel from overheating during cooking by the gas range, and at the same time, continuous gas in a state where there is no flame in the gas range. By blocking the supply of gas will prevent accidents. In addition, it is an object of the present invention to be able to set the high temperature mode to prevent unnecessary gas blocking during high temperature cooking.

In order to achieve the above object, a first embodiment of the overheat prevention gas range according to the present invention, the gas supply pipe is supplied gas; A gas opening and closing unit for opening and closing the gas supply pipe; A cup part in which a through opening is formed at a center thereof; A burner head covered by the cup part, the gas supply opening positioned at the center thereof is connected to the gas supply pipe, and the gas introduced through the gas supply opening is led to the outside by the lower surface of the cup part; An overheat prevention sensor that protrudes from the cup part through the through opening of the cup part and contacts a bottom surface of the cooking container positioned above the cup part during cooking to measure a temperature of the cooking container; And when the temperature of the cooking vessel measured by the overheat prevention sensor is greater than the overheating temperature receives the closing signal from the overheat prevention sensor to close the gas opening and closing, the temperature of the cooking vessel measured by the overheat prevention sensor It characterized in that it comprises a control unit for opening the gas opening and closing portion receiving the open signal from the overheat prevention sensor when the temperature is less than the overheating temperature.

The burner head has a support frame fixed to an inner circumferential surface of the gas supply opening, and the overheat prevention sensor includes: a sensor body part protruding from the cup part through the through opening of the cup part and having an insertion hole formed on a lower surface thereof; A sensor unit attached to an upper surface of the sensor body part and in contact with a bottom surface of the cooking vessel; A lower locking jaw positioned to protrude below the sensor body part to prevent the sensor body part from penetrating through the through opening; A sensor support bar having a first end fixed to the support frame and a second end inserted into the insertion hole to enable vertical movement; And a position between the second end of the sensor support bar and the end face of the insertion port, when the sensor portion descends in contact with the bottom surface of the cooking vessel, the sensor body portion descends with a restoring force along the sensor support bar. It is preferable to include a spring portion to make. Here, the support frame has a cross shape, and the sensor support bar is more preferably fixed to the center of the support frame.

In order to achieve the above object, a second embodiment of the overheat prevention gas range according to the present invention includes a gas supply pipe to which gas is supplied; A gas opening and closing unit for opening and closing the gas supply pipe; Cup portion; A burner head covered by the cup part, the gas supply opening positioned at the center thereof is connected to the gas supply pipe, and the gas introduced through the gas supply opening is led to the outside by the lower surface of the cup part; An overheat prevention sensor which is positioned on an upper surface of the cup part and protrudes from the cup part, and is in contact with a bottom surface of the cooking container located above the cup part during cooking to measure a temperature of the cooking container; And when the temperature of the cooking vessel measured by the overheat prevention sensor is greater than the overheating temperature receives the closing signal from the overheat prevention sensor to close the gas opening and closing, the temperature of the cooking vessel measured by the overheat prevention sensor It characterized in that it comprises a control unit for opening the gas opening and closing portion receiving the open signal from the overheat prevention sensor when the temperature is less than the overheating temperature.

A concave portion is formed on the upper surface of the cup part, and the overheat prevention sensor comprises: a sensor body part positioned above the concave portion of the cup part and having an insertion hole formed on a lower surface thereof; A sensor unit attached to an upper surface of the sensor body part and in contact with a bottom surface of the cooking vessel; A lower locking jaw positioned to protrude below the sensor body part to prevent the sensor body part from being inserted into the recessed part; A sensor support bar having a first end fixed to a bottom surface of the concave portion and a second end inserted into the insertion hole to enable vertical movement; And a position between the second end of the sensor support bar and the end face of the insertion port, when the sensor portion descends in contact with the bottom surface of the cooking vessel, the sensor body portion descends with a restoring force along the sensor support bar. It is preferable to include a spring portion to make.

The sensor support bar is a hollow member having a space formed therein, and the cup part includes a first signal line discharge path penetrating from an inner surface of the concave portion to a lower surface of the cup portion, and the burner head penetrates an upper surface and a lower surface. And a signal line discharge path, wherein the signal line connected to the sensor part is sequentially drawn through the inner space of the sensor support bar, the first signal line discharge path, and the second signal line discharge path to the lower surface of the burner head. desirable.

The sensor support bar has a withdrawal opening through which the signal line is drawn out on a side of the first end side, and the burner head is coupled to a side of the sensor support bar so as to communicate with the withdrawal opening, and the first signal line And a signal line protection tube positioned inside the discharge path and protruding to the bottom surface of the cup part, wherein the signal line protection tube passes through the second signal line discharge path while the cup part covers the burner head, and the interior of the signal line protection tube. More preferably, the signal line is drawn through.

In order to achieve the above object, the overheat prevention gas range according to the present invention sends an opening signal for opening the gas opening and closing part to the control unit when a flame is detected at the burner head, and the flame is not detected at the burner head. The fire extinguishing device may further include a fire extinguishing device that sends a closing signal to the control unit to close the gas opening and closing unit to the control unit. It is characterized by opening.

The overheat prevention gas range directly connects the fire safety device to the gas opening and closing part, such that an open signal or a shutoff signal of the fire safety device is transmitted to the gas opening and closing part without passing through the control part; And a high temperature mode switch installed at the bypass line to connect or block the fire safety device with the gas open / close unit, in the high temperature mode, the high temperature mode switch is connected to the gas open / close unit to maintain an open state. It is desirable to.

In order to achieve the above object, the gas stove overheating prevention method according to the present invention comprises the steps of: (a) measuring the temperature of the overheat prevention sensor in contact with the cooking vessel; (b) the overheat prevention sensor sending a closing signal to the controller when the measured temperature of the cooking vessel is greater than the overheat temperature; (c) the overheat prevention sensor sending an open signal to the controller when the measured temperature of the cooking vessel is less than an overheating temperature; (d) determining, by the fire safety device, the ignition state of the gas range; (e) when the fire safety device determines that the gas range is in an ignition state, the fire safety device sending an open signal to a control unit; (f) if it is determined by the extinguishing safety device that the gas range is extinguished, the extinguishing safety device sends a closing signal to the control unit; And (g) blocking the supply of gas to the gas range if any one of the signals received from the overheat prevention sensor and the fire safety device is closed.

In the overheat prevention gas range according to the present invention, when the user cooks food in the gas range, the cooking container in a heated state is prevented from being overheated, thereby preventing ignition by the cooking container.

In addition, it is possible to prevent the explosion accident due to gas leakage by blocking the continuous supply of gas in the unignified or extinguished state of the flame of the gas range.

Furthermore, the above effects are simultaneously achieved, and the high temperature mode can be set so that the high temperature cooking is possible by maintaining the gas supply even when the cooking vessel exceeds the preset superheat temperature during the high temperature cooking.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

First Example

1 is an exploded perspective view of the ignition unit of the overheat prevention gas range according to the first embodiment of the present invention. 2 is a partial cross-sectional view of the overheat prevention sensor of the overheat prevention gas range according to the first embodiment of the present invention. 3 is a schematic diagram of an overheat prevention gas range according to a first embodiment of the present invention.

The ignition unit of the gas range according to the first embodiment of the present invention includes a cup unit 10, a burner head 20, an overheat prevention sensor 30, a fire safety device 40, and a controller 50.

 The cup part 10 is a disc-shaped member which prevents the broth from flowing into the burner head 20 when the broth falls from the cooking container 1, and is supplied from the gas supply opening 21 of the burner head 20. The gas is guided to flow along the lower surface of the cup 10, and the ignited gas is discharged to the outside through the gas outlets 23 formed at the outer circumference of the burner head 20. Through-opening 11 is formed in the center is inserted into the sensor body 31 to be described later.

Burner head 20 is a cylindrical member, the open top is covered by the cup 10, the gas outlet 23 is formed in the circumferential direction spaced apart from each other at regular intervals. In the normal use state, the ignited gas is discharged through the gas outlets 23 to heat the cooking container 1. A gas supply opening 21 is formed in the center of the burner head 20 so that gas is introduced therethrough, and does not interfere with gas flow inside the gas supply opening 21, and supports the sensor support bar 34 to be described later. The support frame 22 which can be formed is formed, and a cross-shaped frame is preferable.

The overheat prevention sensor 30 is a temperature sensor for measuring the temperature of the cooking container 1 in contact with the bottom of the cooking container 1, and includes a sensor body part 31, a sensor part 32, and a lower locking jaw 33. ), A sensor support bar 34 and a spring portion 35.

The sensor body 31 is inserted into the through opening 11 of the cup portion 10 as a cylindrical member and is positioned to protrude upward from the cup portion 10. The insertion hole 36 which is a cylindrical space is formed in the center of the lower surface of the sensor body part 31. The insertion hole 36 may be formed to penetrate the sensor body portion 31 from the lower surface to the upper surface. In this case, the insertion hole 36 of the upper surface is closed by the sensor portion 32.

The sensor unit 32 is attached to the upper surface of the sensor body 31, the temperature sensor for measuring the temperature of the cooking vessel 1 in direct contact with the bottom of the cooking vessel (1). If it is a contact temperature sensor, all well-known temperature sensors can be used.

The lower locking jaw 33 is positioned below the sensor body part 31 and has a shape protruding in the radial direction of the sensor body part 31. The lower locking jaw 33 is positioned on the lower surface of the cup part 10 in a state where the sensor body part 31 is inserted into the through opening 11 of the cup part 10, whereby the sensor body part 31 penetrates. Displacement is limited so as to be movable only in the downward direction without being separated in the upward direction through the opening 11.

The lower locking jaw 33 may be formed to protrude from the lower outer circumferential surface of the sensor body portion 31, or may be in the form of a plate attached to the lower surface of the sensor body portion 31. In this case, the plate attached to the lower surface should have an area larger than that of the through opening 11, in which case the insertion opening 36 extends through the plate.

The sensor support bar 34 is a cylindrical member having a lower first end 34a and an upper second end 34b. The sensor support bar 34 has a second insertion hole 36 formed at the center of the lower surface of the sensor body 31. The end 34b is inserted. The first end 34a is fixed to the support frame 22 fixed inside the gas supply opening 21.

By such a connection configuration, the sensor body portion 31 is able to move up and down along the sensor support bar 34 in a state where the sensor support bar 34 is inserted into the sensor body portion 31, and the sensor body The upward movement of the portion 31 is possible to the position where the lower locking jaw 33 is caught on the lower surface of the cup portion 10, and the downward movement of the sensor body portion 31 is the longitudinal end 36a of the insertion hole 36 is the sensor Lowering is possible until it reaches the second end 34b of the support bar 34.

However, when the sensor body portion 31 moves downward, the spring portion 35 may be positioned therebetween so that the end face 36a of the insertion hole 36 does not collide with the second end 34b of the sensor support bar 34. Can be. The spring part 35 has an elastic force so that when the sensor part 32 is pressed against the cooking container 1 and the sensor part 32 is not damaged by the collision with the cooking container 1, the spring part 35 can maintain the contact state. When the cooking vessel 1 is removed, the sensor body 31 is raised until the lower locking jaw 33 catches the bottom surface of the cup 10.

Fire safety device 40 is located adjacent to the burner head 20, to detect whether there is a flame in the burner head (20). The sensing method has a configuration in which an electromotive force is generated by measuring the temperature of the burner head 20 and determining that a flame exists when a specific temperature (for example, 650 ° C.) is reached. Fire extinguishing safety device 40 is installed to prevent the outflow of gas without a flame, detailed operating conditions will be described later.

Both the overheat prevention sensor 30 and the fire safety device 40 described above prevent gas leakage or overheating of the cooking vessel 1 by blocking the gas supplied to the gas supply opening 21 of the burner head 20. Perform the function. Such a function is such that the control unit 50 receiving the open signal or the closed signal from the overheat prevention sensor 30 and the fire safety device 40 causes the gas opening and closing unit 70 to open or close the gas supply pipe 60, respectively. The gas supplied through the gas supply pipe 60 connected to the gas supply opening 21 is supplied or cut off.

Hereinafter, a detailed configuration and a gas opening / closing function of the control unit 50 of the overheat prevention gas range according to the first embodiment of the present invention will be described with reference to FIGS. 4 to 6. Here, an embodiment in which the overheat prevention sensor 30 and the fire safety device 40 are installed together in the gas range will be described.

4 is a schematic view in normal use of the overheat prevention gas range according to the first embodiment of the present invention.

The control unit 50 receives a signal from the overheat prevention sensor 30 and at the same time receives a signal from the fire protection device 40 and ANDs both signal values by the AND operator 51 so that the gas opening and closing unit only when both signals are open signals. A function of transmitting the open signal to the 70 is performed.

The overheat prevention sensor 30 functions to prevent the cooking vessel 1 from being overheated, and is closed when the temperature of the cooking vessel 1 is greater than the overheating temperature (for example, 300 ° C.). 0 ") is sent to the control part 50, and an open signal (signal value" 1 ") is sent to the control part 50 when it is less than superheat temperature.

The fire extinguishing safety device 40 functions to prevent the gas from being continuously supplied in the extinguishing state. When the temperature of the burner head 20 is lower than a specific temperature, it is determined that a flame does not exist to prevent gas leakage. The closing signal (signal value "0") is sent to the controller 50, and when it is above a certain temperature, it is determined that there is a flame, and the open signal (signal value "1") is sent to the controller 50.

Looking at the signal state in normal use, when the cooking vessel 1 is not overheated and the normal ignition state is maintained, the overheat prevention sensor 30 sends an open signal (signal value "1") to the controller 50. , Fire extinguishing safety device 40 sends an open signal (signal value "1") to the control unit 50. When the AND operation is performed by the AND operator 51, the signal value “1”, which is an open signal, is derived, and the gas opening and closing unit 70 opens the gas supply pipe 60.

5 is a schematic diagram of overheating of the overheat prevention gas range according to the first embodiment of the present invention.

Referring to the signal state when using the overheat illustrated in FIG. 5, when the cooking vessel 1 is overheated and the normal ignition state is maintained, the overheat prevention sensor 30 may control the closing signal (signal value "0") to the control unit ( 50, the fire safety device 40 sends an open signal (signal value " 1 ") to the controller 50. When the AND operation is performed by the AND operator 51, a signal value “0”, which is a closed signal, is derived, and the gas opening and closing unit 70 closes the gas supply pipe 60.

Although not shown in the drawings, when the cooking vessel 1 is not overheated, and looks at the case where an abnormal digestion state occurs, the overheat prevention sensor 30 sends an open signal (signal value “1”) to the controller 50. And the fire extinguishing safety device 40 sends a closing signal (signal value " 0 ") to the controller 50. When the AND operation is performed by the AND operator 51, a signal value “0”, which is a closed signal, is derived, and the gas opening and closing unit 70 closes the gas supply pipe 60.

In addition, when the cooking vessel 1 is overheated, and looks at a case where an abnormal fire extinguishing condition occurs, the overheat prevention sensor 30 sends a closing signal (signal value "0") to the control unit 50, the fire safety device ( 40) also sends a closing signal (signal value "0") to the controller 50. When the AND operation is performed by the AND operator 51, a signal value “0”, which is a closed signal, is derived, and the gas opening and closing unit 70 closes the gas supply pipe 60.

6 is a schematic diagram showing a high temperature mode use state of the overheat prevention gas range according to the first embodiment of the present invention.

The high temperature mode is a mode that can be selected by the user when cooking is required beyond a set overheating temperature (for example, 300 ° C.) according to the cooking type, which is enabled by the operation of the high temperature mode switch 52.

The high temperature mode switch 52 directly connects the fire safety device 40 to the gas open / close unit 70 so that the open or closed signal of the fire safety device 40 does not go through the AND operator 51. It is installed on the bypass line 53 to be delivered to the), the fire safety device 40 is connected or blocked with the gas opening and closing part 70.

When the high temperature mode switch 52 is in the OFF state, that is, when the bypass line 53 is cut off, the above-described function is achieved, and when the high temperature mode switch 52 is in the ON state, That is, when the bypass line 53 is connected, if the normal ignition state, the open signal (that is, the signal value "1") through the bypass line 53, regardless of the output value of the AND operator 51, the gas opening and closing unit ( 70) and the gas supply is not cut off.

6, in the state where the cooking vessel 1 is overheated in a normal ignition state, the overheat prevention sensor 30 sends a closing signal (signal value “0”) to the controller 50. The fire extinguishing device 40 sends an open signal (signal value "1") to the control unit 50 and the bypass line 53. When the AND operator 51 performs an AND operation, a signal value "0", which is a closed signal, is derived, but an open signal (signal value "1") is transmitted to the gas opening and closing unit 70 through the bypass line 53 to supply gas. This is not blocked.

On the other hand, the above example illustrates the case where both the overheat prevention sensor 30 and the fire safety device 40 is installed, it is also possible to use only the overheat prevention sensor 30, in this case, the AND operator ( 51 is not necessary, so that the open signal or the closed signal of the overheat prevention sensor 30 is directly transmitted to the gas opening / closing part 70.

In addition, in the above example, the overheat prevention sensor 30 sends the signal value "0" to the controller 50 when the temperature of the cooking vessel 1 is higher than the overheat temperature, and controls the signal value "1" when the temperature is lower than the overheat temperature. Although it has been described as sending to 50, according to the type of the sensor unit 32 sends the signal value "1" to the control unit 50 when the cooking vessel 1 overheats, and the control unit 50 to the signal value "0" in normal use Can be sent to In this case, if the NOT operator is configured before the AND operator 51 and passed therethrough, the signal value "1" changes to the signal value "0", and the signal value "0" changes to the signal value "1". It will have the same effect as in the above example.

2nd Example

Hereinafter, an overheat prevention gas range according to a second embodiment of the present invention will be described. Components that perform the same functions as those in the first embodiment will be denoted by the reference numerals used in the first embodiment, and the same function. Repetitive description is omitted.

7 is an exploded perspective view of the ignition unit of the overheat prevention gas range according to the second embodiment of the present invention.

The ignition unit of the gas range according to the second embodiment of the present invention includes a cup unit 110, a burner head 120, an overheat prevention sensor 130, a fire safety device 40, and a controller 50.

 The cup part 110 is a disc-shaped member that prevents the broth from flowing into the burner head 120 when the broth falls from the cooking container 1, and the gas supplied from the gas supply opening 121 of the burner head 120. Is guided to flow along the lower surface of the cup 110, and the ignited gas is discharged to the outside through the gas outlets 123 formed in the outer circumference of the burner head 120.

A recess 111 is formed in the center of the cup 110 so that the sensor body 131 to be described later is located thereon. The cup part 110 is formed with a first signal line discharge path penetrating from the inner surface 113 of the recess 111 to the lower surface of the cup part 110. In FIG. 7, a signal line protection tube 114 is inserted into the first signal line discharge path. The state is shown. A path through which the signal line connected to the sensor unit 132 is drawn out through the first signal line protection tube 114 will be described later.

Burner head 120 is a cylindrical member, the open top is covered by a cup 110, the gas outlet 123 spaced apart from each other at regular intervals is formed in the circumferential direction. In the normal use state, the ignited gas is discharged through the gas outlets 123 to heat the cooking container 1. A gas supply opening 121 is formed at the center of the burner head 120 to allow gas to flow therethrough. In addition, the burner head 120 is provided with a second signal line discharge path 124 penetrating the upper surface and the lower surface, which is used to withdraw the signal line.

The overheat prevention sensor 130 is a temperature sensor for measuring the temperature of the cooking container 1 in contact with the bottom of the cooking container 1, and includes a sensor body 131, a sensor part 132, and a lower locking jaw 133. ), A sensor support bar 134 and a spring portion 135.

The sensor body 131 is a cylindrical member positioned on the recess 111 of the cup 110 to protrude upward from the cup 110. The sensor body portion 131 has a lower locking jaw 133 protruding in the radial direction from the lower portion of the sensor body portion 131 on the upper surface of the cup portion 110, so that it is not inserted into the recess 111. .

An insertion hole 136, which is a cylindrical space, is formed at the center of the lower surface of the sensor body 131. The insertion hole 136 may be formed to penetrate the sensor body 131 from the lower surface to the upper surface. In this case, the insertion hole 136 of the upper surface is closed by the sensor unit 132.

The sensor unit 132 is attached to the upper surface of the sensor body 131, and is a temperature sensor for measuring the temperature of the cooking vessel 1 in direct contact with the bottom of the cooking vessel (1). If it is a contact temperature sensor, all well-known temperature sensors can be used.

The lower locking jaw 133 is positioned below the sensor body 131 and has a shape protruding in the radial direction of the sensor body 131. The lower locking jaw 133 prevents the sensor body 131 from being inserted into the recess 111 of the cup 110 even when the sensor body 131 is pressed by the cooking container 1.

The lower locking jaw 133 may be formed to protrude from the lower outer circumferential surface of the sensor body 131, or may be in the form of a plate attached to the lower surface of the sensor body 131. In this case, the plate attached to the lower surface should have an area larger than that of the recess 111, in which case the insertion hole 136 extends through the plate.

The sensor support bar 134 is a hollow cylindrical member having a lower first end 134a and an upper second end (not shown), and the insertion hole 136 is formed at the center of the bottom surface of the sensor body 131. The second end is inserted in. The first end 134a is fixed to the bottom surface 112 of the recess 111 to support the sensor body 131.

By such a connection configuration, the sensor body portion 131 is able to move up and down along the sensor support bar 134 while the sensor support bar 134 is inserted into the sensor body portion 131, the sensor body The downward movement of the portion 131 may be possible to the position where the lower locking jaw 133 is caught on the upper surface of the cup unit 110. The upward movement of the sensor body 131 may be limited by forming an uneven portion between the inner circumferential surface of the insertion hole 136 and the outer circumferential surface of the sensor support bar 34.

However, when the sensor body portion 131 moves downward, the spring portion 135 may be positioned therebetween so that the end face of the insertion hole 136 does not collide with the second end of the sensor support bar 134. When the sensor unit 132 is pressed against and in contact with the cooking container 1, the spring part 135 may use elastic force to maintain the contact state without being damaged by the collision with the cooking container 1. When the cooking vessel 1 is removed, the sensor body 131 is raised by the elastic force.

The sensor support bar 134 is a hollow member having a space formed therein, and a withdrawal opening is formed at the side of the first end 134a so that the signal line can be drawn out. When the sensor support bar 134 is fixed to the bottom surface 112 of the recess 111, the sensor support bar 134 is coupled to the signal line protection tube 114 protruding from the inner surface 113 of the recess 111. By this coupling, the internal space of the sensor support bar 134 communicates with the internal space of the signal line protection tube 114 through the withdrawal opening and the signal line protection tube 114.

In addition, when the cup part 110 is covered on the burner head 120, the signal line protection tube 114 is inserted into the second signal line discharge path 124, so that the signal line connected to the sensor unit 132 is inserted into the insertion hole 136, Through the internal space of the sensor support bar 134, the signal line protective tube 114 (where the signal line protective tube 114 is inserted into the first signal line discharge path and the second signal line discharge path 124) in order to withdraw the outside do. In addition, without the signal line protective tube 114, it is also possible to take out the signal line through the first signal line discharge path and the second signal line discharge path 124.

Since the configuration and the gas opening / closing function of the controller 50 of the overheat prevention gas range according to the second embodiment of the present invention are the same as in the first embodiment, a repeated description thereof will be omitted.

Preferred embodiments of the invention described above have been disclosed for purposes of illustration. Therefore, those skilled in the art having ordinary knowledge of the present invention will be capable of various modifications, changes, and additions within the spirit and scope of the present invention, and such modifications, changes and additions should be regarded as belonging to the following claims.

1 is an exploded perspective view of the ignition unit of the overheat prevention gas range according to the first embodiment of the present invention.

2 is a partial cross-sectional view of the overheat prevention sensor of the overheat prevention gas range according to the first embodiment of the present invention.

3 is a schematic diagram of an overheat prevention gas range according to a first embodiment of the present invention.

4 is a schematic view in normal use of the overheat prevention gas range according to the first embodiment of the present invention.

5 is a schematic diagram of overheating of the overheat prevention gas range according to the first embodiment of the present invention.

6 is a schematic diagram showing a high temperature mode use state of the overheat prevention gas range according to the first embodiment of the present invention.

7 is an exploded perspective view of the ignition unit of the overheat prevention gas range according to the second embodiment of the present invention.

Claims (10)

In the overheat prevention gas range to prevent the cooking vessel from overheating, A gas supply pipe through which gas is supplied; A gas opening and closing unit for opening and closing the gas supply pipe; A cup part in which a through opening is formed at a center thereof; A burner head covered by the cup part, the gas supply opening positioned at the center thereof is connected to the gas supply pipe, and the gas introduced through the gas supply opening is led to the outside by the lower surface of the cup part; An overheat prevention sensor that protrudes from the cup part through the through opening of the cup part and contacts a bottom surface of the cooking container positioned above the cup part during cooking to measure a temperature of the cooking container; And When the temperature of the cooking vessel measured by the overheat prevention sensor is higher than the overheating temperature, the gas closing unit is closed by receiving a closing signal from the overheat prevention sensor, and the temperature of the cooking vessel measured by the overheat prevention sensor is And a control unit which receives the open signal from the overheat prevention sensor and opens the gas opening and closing part when the overheating temperature is less than the overheating temperature. The method of claim 1, The burner head has a support frame fixed to an inner circumferential surface of the gas supply opening, The overheat prevention sensor A sensor body part protruding from the cup part through the through opening of the cup part and having an insertion hole formed on a lower surface thereof; A sensor unit attached to an upper surface of the sensor body part and in contact with a bottom surface of the cooking vessel; A lower locking jaw positioned to protrude below the sensor body part to prevent the sensor body part from penetrating through the through opening; A sensor support bar having a first end fixed to the support frame and a second end inserted into the insertion hole to enable vertical movement; And Positioned between the second end of the sensor support bar and the end face of the insertion port such that when the sensor portion descends in contact with the bottom surface of the cooking vessel, the sensor body portion descends with restoring force along the sensor support bar; Overheat prevention gas range comprising a spring portion. The method of claim 2, And the support frame has a cross shape, and the sensor support bar is fixed to the center of the support frame. In the overheat prevention gas range to prevent the cooking vessel from overheating, A gas supply pipe through which gas is supplied; A gas opening and closing unit for opening and closing the gas supply pipe; Cup portion; A burner head covered by the cup part, the gas supply opening positioned at the center thereof is connected to the gas supply pipe, and the gas introduced through the gas supply opening is led to the outside by the lower surface of the cup part; An overheat prevention sensor which is positioned on an upper surface of the cup part and protrudes from the cup part, and is in contact with a bottom surface of the cooking container located above the cup part during cooking to measure a temperature of the cooking container; And When the temperature of the cooking vessel measured by the overheat prevention sensor is higher than the overheating temperature, the gas closing unit is closed by receiving a closing signal from the overheat prevention sensor, and the temperature of the cooking vessel measured by the overheat prevention sensor is And a control unit which receives the open signal from the overheat prevention sensor and opens the gas opening and closing part when the overheating temperature is less than the overheating temperature. The method of claim 4, wherein A recess is formed on the upper surface of the cup part, The overheat prevention sensor A sensor body portion positioned above the concave portion of the cup portion and having an insertion hole formed on a lower surface thereof; A sensor unit attached to an upper surface of the sensor body part and in contact with a bottom surface of the cooking vessel; A lower locking jaw positioned to protrude below the sensor body part to prevent the sensor body part from being inserted into the recessed part; A sensor support bar having a first end fixed to a bottom surface of the concave portion and a second end inserted into the insertion hole to enable vertical movement; And Positioned between the second end of the sensor support bar and the end face of the insertion port such that when the sensor portion descends in contact with the bottom surface of the cooking vessel, the sensor body portion descends with restoring force along the sensor support bar; Overheat prevention gas range comprising a spring portion. The method of claim 5, The sensor support bar is a hollow member having a space therein, The cup portion includes a first signal line discharge path penetrating from the inner surface of the recess to the lower surface of the cup portion, The burner head includes a second signal line discharge path passing through an upper surface and a lower surface, And a signal line connected to the sensor unit passes through an inner space of the sensor support bar, the first signal line discharge path, and the second signal line discharge path, and is led out to a lower surface of the burner head. The method of claim 6, The sensor support bar has a withdrawal opening through which the signal line is drawn out on a side of the first end side, The burner head is coupled to the side of the sensor support bar so as to communicate with the draw opening, and includes a signal line protection tube protruding to the bottom surface of the cup in a state located inside the first signal line discharge path, And the signal line protective tube passes through the second signal line discharge path in the state where the cup part covers the burner head, and the signal line is drawn out through the inside of the signal line protective tube. The gas stove of claim 1 or 4, wherein the overheat prevention gas range is When the flame is detected in the burner head sends an opening signal for opening the gas opening and closing portion to the controller, and if the flame is not detected in the burner head, the closing signal for closing the gas opening and closing portion in the control unit to the controller. Includes additional fire protection, The control unit is the overheat prevention gas range, characterized in that to open the gas opening and closing only when receiving the open signal from both the overheat protection sensor and the fire safety. The method of claim 8, wherein the overheat prevention gas range A bypass line connecting the fire safety device directly to the gas opening / closing unit, such that an open signal or a closing signal of the fire safety device is transmitted to the gas opening / closing unit without passing through the control unit; And Is installed on the bypass line further includes a high temperature mode switch for connecting or blocking the fire safety device and the gas opening and closing, In the high temperature mode, the high temperature mode switch is connected to the overheat prevention gas range, characterized in that the gas opening and closing portion to maintain the open state. In the overheat prevention method of the gas range for preventing the cooking vessel from overheating, (a) measuring the temperature by the overheat prevention sensor contacting the cooking vessel; (b) the overheat prevention sensor sending a closing signal to the controller when the measured temperature of the cooking vessel is greater than the overheat temperature; (c) the overheat prevention sensor sending an open signal to the controller when the measured temperature of the cooking vessel is less than an overheating temperature; (d) determining, by the fire safety device, the ignition state of the gas range; (e) when the fire safety device determines that the gas range is in an ignition state, the fire safety device sending an open signal to a control unit; (f) if it is determined by the extinguishing safety device that the gas range is extinguished, the extinguishing safety device sends a closing signal to the control unit; And (g) overheating the gas range, characterized in that the control unit comprises shutting off the gas supply to the gas range if any one of the signals received from the overheat prevention sensor and the fire safety device exists. Prevention method.

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