KR101247982B1 - Gas range with function of compulsory deleting prevention of overheating - Google Patents

Abstract

PURPOSE: A gas range with a compulsory cut-off function is provided to prevent fire caused by overheating and thereby can improve the reliability of the gas range. CONSTITUTION: A gas range with a compulsory cut-off function comprises a thermo-coupler(1), a first bimetal switch(3), and a magnet switch(2). The thermo-coupler converts flames of a burner into electrical signals. When food is heated over predetermined temperature, the first bimetal switch cuts off voltage supplied from the thermo-coupler to the magnet switch. The magnet switch opens or closes an electric switch according to whether the electrical signals are input from the thermo-coupler or not.

Description

Gas range with function of compulsory deleting prevention of overheating

The present invention relates to a gas range having a forced overheating release function, and more particularly, a bimetal switch or the like is installed to block the cooking utensils when the cookware is heated or the inside of the gas range is overheated while cooking using the gas range. By installing a multi-contact selection switch and another bimetal switch in the gas range, the overheat prevention function can be forcibly released as necessary, preventing cooking failures due to premature fire extinguishing. It is invented to eliminate the inconvenience of consumers due to, and to prevent fire at high temperatures.

In general, a heat cooker is a kitchen appliance for cooking food in a state in which food can be ingested by using a gas to heat the food. The cooker is a method of generating heat for heating food using electricity. In addition, the gas is largely divided into a method of generating heat for heating food by burning a gas.

In the method of generating heat for cooking food by burning gas, the food is cooked by heating a container containing the food to be cooked by the heat generated by the combustion of a mixed gas in which gas and air are mixed.

A heating cooking apparatus (for example, a gas range) operated by a method of combusting a gas is provided with a combustion unit, and the combustion unit mixes the gas with air to combust the gas, injects gas into the internal space, and In the vicinity of the gas the gas is drawn into the combustion unit together with the air.

Then, the mixed gas flowing into the combustion unit is uniformly mixed in the combustion unit, and after being uniformly mixed, the mixed gas is ignited to burn the gas, and heat generated by the combustion of the gas is radiated and conducted. The heat is transferred by the food is heated while cooking.

In addition, when the temperature of cookware or the like that is heated during the combustion operation reaches a temperature higher than a predetermined overheating determination temperature, the combustion operation is automatically performed to prevent failure of various electronic devices, to ensure safety, and to prevent fire. Overheat prevention means or the like for stopping).

This kind of overheat prevention means, for example, arranges a bimetal switch to be turned off at a temperature higher than the overheating determination temperature in the vicinity of the heated portion, and at the same time, the energization line of the solenoid valve provided with the bimetal switch in the fuel supply path to the burner. Connect to When the bimetal switch is turned OFF at a temperature equal to or higher than the overheating determination temperature, the energization to the solenoid valve (current for opening and holding the solenoid valve) is cut off, and the solenoid valve is closed, thereby stopping the combustion operation of the burner.

Further, the temperature of the portion to be heated is directly detected by a temperature sensor such as a thermistor, and the detected temperature is input to a control circuit of a microcomputer or the like in charge of operation control of the solenoid valve. When the detected temperature reaches or exceeds the overheating determination temperature, the control circuit forcibly shuts off power to the solenoid valve and closes the solenoid valve to stop the burner's combustion operation.

Conventional Korean Laid-Open Patent Publication No. 1998-067228 has been proposed as such a gas shut-off safety device, which detects a flame of a burner and converts it into an electrical signal and outputs the electrical coupler to the upper portion of the burner. A bimetal switch mounted on the inner lower end of the cap to be placed and blocking the output of the thermo coupler when the food on the burner and the cap is overheated, and a magnetic force when a signal is input from the thermo coupler. If the signal is not generated from the thermocoupler, the magnet switch stops the magnetic force generation, the spring provides the elastic force, and the magnetic force generated from the magnet switch and the elastic force of the spring opens the gas supply path. With valve packing to supply or shut off gas by closing It is in a binary configuration.

However, the gas cut-off safety device of the gas range having such a configuration can secure the safety of the occurrence of fire due to overheating because the gas supply is cut off when the bimetal switch is overheated to the extent that the bimetal switch is "off". It is slow and the deviation of operation is ± 10-15 ℃, which causes a lot of problems of premature digestion during cooking (for example, the bimetal switch is set at 140-280 ℃, just before the oil is ignited. When digesting foods such as banks at a high temperature, a large amount of premature digestion occurs), and a long time to return to work after digestion is long.

1. Republic of Korea Patent Publication No. 1998-067228 (October 15, 1998) 2. Republic of Korea Patent Publication No. 10-0371224 (January 23, 2003)

The present invention has been made to solve such a conventional problem, one or two having a magnet switch for controlling the opening and closing of the solenoid valve, a thermocoupler for detecting the flame of the burner as an electrical signal and a different setting temperature By installing a multi-contact selection switch between two bimetal switches, it is possible to select the overheat prevention temperature or forcibly turn off the overheat protection function as necessary, thereby preventing cooking failure due to premature extinguishing during cooking. In order to solve the inconvenience of consumers caused by premature extinguishing, and to prevent fire at high temperatures, it is possible to provide a gas range having a forced overheating release function that can greatly improve the reliability of the product. Its purpose is to.

One embodiment of the present invention for achieving the above object is a thermocoupler for detecting the flame of the burner and converts it to an electrical signal and outputs; A first bimetal switch mounted on an inner bottom of the cap placed on the upper end of the burner and “off” when the food on the burner and the cap is overheated above a predetermined temperature to cut off the voltage supplied from the thermo coupler to the magnet switch Wow; A magnetic switch that generates magnetic force when a signal is input from the thermo coupler and stops the generation of magnetic force by controlling the opening and closing of the solenoid valve when the signal is not input from the thermo coupler; The multi-contact selection switch having one movable terminal and first and second fixed terminals is additionally installed between the thermocoupler, the first bimetal switch and the magnet switch, wherein the movable terminal of the multi-contact selection switch is a thermocoupler. The first fixed terminal is connected to the magnet switch via the first bimetal switch, the second fixed terminal is directly connected to the magnet switch, so that during high temperature cooking, the consumer connects the movable terminal of the multi-contact selection switch to the magnet switch. The first bimetal switch is transferred to the second fixed terminal connected directly. It is characterized in that to enable the overheat protection function through.

In this case, the first bimetal switch is characterized in that the temperature is set to "off" between 140 ℃ to 230 ℃.

Another embodiment of the present invention for achieving the above object, the thermocoupler for detecting the flame of the burner and converts it to an electrical signal and outputs; A first bimetal switch mounted on an inner bottom of the cap placed on the upper end of the burner and “off” when the food on the burner and the cap is overheated above a predetermined temperature to cut off the voltage supplied from the thermo coupler to the magnet switch Wow; A magnetic switch that generates magnetic force when a signal is input from the thermo coupler and stops the generation of magnetic force by controlling the opening and closing of the solenoid valve when the signal is not input from the thermo coupler; The multi-contact selector and the second bimetal switch having one movable terminal and first to third fixed terminals are additionally installed between the thermocoupler, the first bimetal switch and the magnet switch. The movable terminal is connected to the thermo coupler, and the first and second fixed terminals are connected to the magnet switch through the first and second bimetal switches, but the third fixed terminal is directly connected to the magnet switch.

At this time, the first and second bimetal switch is characterized in that it is installed separately for low temperature and high temperature detection.

In the above, the first bimetal switch for low temperature detection sets the temperature to be “off” between 140 ° C. and 230 ° C., and the second bimetal switch for high temperature detection sets the temperature to “off” between 230 ° C. and 280 ° C. It is characterized by.

In addition, when the consumer performs cooking using a gas range, in the case of general cooking, the overheat prevention function centers on the temperature set by the first bimetal switch by connecting the movable terminal of the multi-contact selection switch to the first fixed terminal. In the case of cooking requiring high temperature, the overheat prevention function is performed around the temperature set by the second bimetal switch by connecting the movable terminal of the multi-contact selection switch to the second fixed terminal. If the temperature is so high that cooking cannot be achieved even with the setting temperature of the second bimetal switch, the movable terminal of the multi-contact selection switch is connected to the third movable terminal and the first and second bimetal switches are used. It is characterized in that the overheat protection function itself can be released.

As described above, according to the gas range having the overheating forced release function of the present invention, a multi-contact selection switch is provided between the magnet switch and the thermocoupler and one or two bimetal switches having different setting temperatures. Therefore, consumers can arbitrarily choose to operate the overheat protection function according to the set temperature of low temperature or high temperature, or forcibly turn off the overheat protection function, thereby premature extinguishing due to unnecessary "off" of the bimetal switch when cooking high temperature dishes. It is possible to prevent the cooking from failing, to solve the inconvenience of consumers caused by premature digestion, to prevent the fire at high temperature, and to greatly improve the reliability of using the product. It is a useful invention.

1 is a block diagram of a gas range according to one embodiment of the present invention;
Figure 2 is a block diagram of a gas range according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 illustrates a block diagram of a gas range according to an embodiment of the present invention, and FIG. 2 illustrates a block diagram of a gas range according to another embodiment of the present invention.

Accordingly, an embodiment of the present invention as shown in Figure 1,

A thermo coupler (1) which detects a flame of a burner and converts it into an electrical signal and outputs the converted electrical signal; A first bimetal switch mounted on an inner bottom of the cap placed on the upper end of the burner and “off” when the food on the burner and the cap is overheated above a predetermined temperature to cut off the voltage supplied from the thermo coupler to the magnet switch (3); The magnet switch 2 generates magnetic force when the signal is input from the thermo coupler 1 and stops the magnetic force generation when the signal is not input from the thermo coupler 1 to control the opening and closing of the solenoid valve 5. In the gas range having a overheat prevention function,

A multi-contact selection switch having one movable terminal a and first and second fixed terminals b and c between the thermo coupler 1 and the first bimetal switch 3 and the magnet switch 2 6) is additionally installed, the movable terminal (a) of the multi-contact selection switch (6) is connected to the thermo coupler (1), the first fixed terminal (b) is a magnet switch through the first bimetal switch (3) (2), the second fixed terminal (c) is directly connected to the magnet switch (2), the consumer during the high temperature cooking the terminal (a) of the multi-contact selection switch (6) magnet switch (2) ) Is switched to the second fixed terminal (c) directly connected to the overheat prevention function through the first bimetal switch (3).

In this case, the first bimetal switch 3 is characterized in that the temperature is set to "off" between 140 ℃ to 230 ℃.

Another embodiment of the present invention, as shown in FIG.

A thermo coupler (1) which detects a flame of a burner and converts it into an electrical signal and outputs the converted electrical signal; A first bimetal switch mounted on an inner bottom of the cap placed on the upper end of the burner and “off” when the food on the burner and the cap is overheated above a predetermined temperature to cut off the voltage supplied from the thermo coupler to the magnet switch (3); The magnet switch 2 generates magnetic force when the signal is input from the thermo coupler 1 and stops the magnetic force generation when the signal is not input from the thermo coupler 1 to control the opening and closing of the solenoid valve 5. In the gas range having a overheat prevention function,

A multi-contact selection switch having one movable terminal a and first to third fixed terminals b)-(d) between the thermo coupler 1, the first bimetal switch 3, and the magnet switch 2. (6) and the second bimetal switch 4 are additionally installed, the movable terminal (a) of the multi-contact selection switch (6) is connected to the thermo coupler (1), the first and second fixed terminal (b) (c) is connected to the magnet switch 2 through the first and second bimetal switches 3 and 4, and the third fixed terminal d is directly connected to the magnet switch 2.

At this time, the first and second bimetal switch (3) (4) is characterized in that it is provided separately for the low temperature and high temperature detection.

In the above, the first bimetal switch 3 for low temperature detection sets the temperature to be "off" between 140 ° C and 230 ° C, and the second bimetal switch 4 for high temperature detection is "off" between 230 ° C and 280 ° C. "The temperature is set so that it is.

In addition, when the consumer performs cooking using a gas range, in the case of general cooking, the first bimetal switch 3 is connected by connecting the movable terminal a of the multi-contact selection switch 6 to the first fixed terminal b. The overheat prevention function is performed based on the temperature set by), and in the case of cooking requiring high temperature, the movable terminal (a) of the multi-contact selection switch (6) is connected to the second fixed terminal (c). The overheat prevention function is performed around the temperature set by the second bimetal switch 4, and a temperature so high that cooking cannot be performed even by the setting temperature by the second bimetal switch 4 may be required. In this case, the overheat protection function through the first and second bimetal switches 3 and 4 can be released by connecting the movable terminal a of the multi-contact selection switch 6 to the third movable terminal a. It is characterized by that.

Referring to the effect of the gas range having a forced overheating prevention function of the present invention configured as described above are as follows.

First, according to one embodiment of the present invention, in a known gas range having an overheat protection function, a multi-contact selection switch 6 is provided between a thermocoupler 1, a first bimetal switch 3, and a magnet switch 2. In addition, the multi-contact selection switch 6 is normally switched to the side of the first bimetal switch 3 so that the overheat prevention function is performed in the temperature range set by the first bimetal switch 3. When cooking at a higher temperature than the temperature range set by the bimetal switch 3, the multi-contact selection switch 6 is transferred to the magnet switch 2 side so that the overheat protection function of the first bimetal switch 3 is released. The main technical components.

At this time, a known gas range having an overheat prevention function includes a thermo coupler 1, a first bimetal switch 3, and a magnet switch 2, and the thermo coupler 1 detects a flame of a burner. Later it converts it into an electrical signal and supplies it with the voltage required to drive the magnet switch 2.

In addition, the first bimetal switch 3 is mounted on the inner lower end of the cap placed on the upper end of the burner, and is “off” when the food on the burner and the cap is overheated by a predetermined temperature or more, so that the thermo coupler 1 In order to cut off the voltage supplied to the magnet switch (2) at this time, in one embodiment of the present invention by setting the overheat prevention setting temperature of the first bimetal switch (3) between 140 ℃ to 230 ℃, The first bimetal switch 3 is “off” when the temperature of the food is raised between 140 ° C. and 230 ° C. to cut off the voltage output from the thermo coupler 1 and supplied to the magnet switch 2 to provide the magnet switch ( 2) automatically closes the solenoid valve 5 so that a fire due to overheating is automatically prevented.

That is, in one embodiment of the present invention, between the thermo coupler 1, the first bimetal switch 3 and the magnet switch 2, one movable terminal a and the first and second fixed terminals b) ( a multi-contact selection switch 6 having c) is additionally installed, the movable terminal a of the multi-contact selection switch 6 is connected to the thermo coupler 1, and the first fixed terminal b is the first It is connected to the magnet switch 2 through the bimetal switch 3, and the second fixed terminal c is directly connected to the magnet switch 2, so that the user selects the multi-contact point in the case of requiring the overheat protection function. By switching the movable terminal (a) of the switch (6) to the first fixed terminal (b) connected to the first bimetal switch (3) so that the overheat protection function is performed in the temperature range set by the first bimetal switch (3) When the high temperature cooking is higher than the temperature range set by the first bimetal switch 3, the multi-contact Is one of the movable terminal (a) of the selecting switch 6 is connected directly to the magnet switch 2, a second fixed terminal (c) by switching the side overheating protection through a first bimetallic switch 3 functions to be released.

Accordingly, when cooking a high-temperature dish of 140 ° C. to 230 ° C. or more using a gas range to which an embodiment of the present invention is applied, the cooking of the cooking according to premature extinguishing may be generated due to the unnecessary “off” of the first bimetal switch 3. Failure can be prevented beforehand, which can resolve the inconvenience of consumers due to premature extinguishing.

On the other hand, according to another embodiment of the present invention, as described above, one movable terminal (a) and the first to the first between the thermocoupler 1, the first bimetal switch 3 and the magnet switch 2 of the known gas range. A multi-contact selection switch 6 having a third fixed terminal (b)-(d) and a second bimetal switch 4 are additionally installed, and the first and second bimetal switches 3 and 4 are each other. By distinguishing / installing for detecting low and high temperature with different setting temperature, it expands the range of overheat prevention temperature according to the optimum temperature of the food to be cooked to consumers, and releases the overheat prevention function itself if necessary. It is the main technical component that makes cooking possible.

At this time, the movable terminal (a) of the multi-contact selection switch (6) is connected to the thermo coupler (1), the first and second fixed terminal (b) (c) is the first and second bimetal switch (3) (4) is connected to the magnet switch (2), the third fixed terminal (d) is directly connected to the magnet switch (2), and the first bimetal switch (3) is 140 ℃ to 230 for low temperature detection In addition to setting the temperature to " off " between the < RTI ID = 0.0 > C, < / RTI > the second bimetal switch 4 also set the temperature to " off "

Therefore, when a consumer performs cooking using a gas range to which another embodiment of the present invention is applied, unlike the embodiment of the present invention, one of two kinds of overheat prevention temperatures may also be selected according to the food. In the case of a food that needs to be cooked at a temperature higher than two overheat prevention temperatures, cooking can be performed while the overheat prevention function itself is released, thereby greatly expanding the user's selection.

That is, when the food to be heated and cooked using the gas range is general cooking at a relatively low temperature, the consumer sets the movable terminal a of the multi-contact selection switch 6 to the first fixed terminal b. The overheat prevention function is performed around the temperature set by the first bimetal switch 3 (for example, a temperature between 140 ° C and 230 ° C), and in the case of cooking requiring a relatively high temperature The temperature set by the second bimetal switch 4 (for example, a temperature between 230 ° C. and 280 ° C.) by connecting the movable terminal a of the multi-contact selection switch 6 to the second fixed terminal c. The overheat prevention function may be performed based on the above, and in case of requiring a very high temperature (for example, 280 ° C. or more) such that cooking cannot be performed even at the setting temperature by the second bimetal switch 4. Multi-contact selection The overheat protection function through the first and second bimetal switches 3 and 4 is released by connecting the movable terminal a of the switch 6 to the third movable terminal a directly connected to the magnet switch 2. And perform the required cooking.

As described above, the gas range to which another embodiment of the present invention is applied may be selected by the consumer to operate the overheat protection function according to the set temperature of low temperature or high temperature, or the hot cooking function may be forcibly released by the overheat protection function. When the bimetal switch is unnecessarily "off", it is possible to prevent premature extinguishing and failing the cooking, thereby relieving the inconvenience caused by premature extinguishing and preventing fire at high temperature. Therefore, the reliability of the product can be greatly improved.

It should be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

1: Thermocoupler
2: micro switch
3: first bimetal switch
4: second bimetal switch
5: solenoid valve
6: multi-contact selector switch
a: movable terminal
bd: 1st to 3rd fixed terminal

Claims (5)

A thermo coupler for converting the flame of the burner into an electrical signal; A first bimetal switch “off” when the food is overheated above a predetermined temperature to cut off the voltage supplied from the thermo coupler to the magnet switch; In the gas range having a overheat prevention function; and a magnet switch for opening and closing the solenoid valve in response to whether a signal is input from the thermo coupler,
Between the thermo coupler, the first bimetal switch and the magnet switch, a multi-contact selection switch having one movable terminal and first and second fixed terminals is additionally installed, and the movable terminal of the multi-contact selection switch is connected to the thermo coupler. The first fixed terminal is connected to the magnet switch through the first bimetal switch, the second fixed terminal is directly connected to the magnet switch, when the high temperature cooking, the consumer is connected directly to the magnet switch and the movable terminal of the multi-contact selection switch 2 The gas range having a forced over-temperature release function, characterized in that by switching to the fixed terminal side to release the over-temperature protection function through the first bimetal switch.
The method according to claim 1,
And the first bimetal switch has a temperature set to “off” between 140 ° C. and 230 ° C. A thermo coupler for converting the flame of the burner into an electrical signal; A first bimetal switch “off” when the food is overheated above a predetermined temperature to cut off the voltage supplied from the thermo coupler to the magnet switch; In the gas range having a overheat prevention function; and a magnet switch for opening and closing the solenoid valve in response to whether a signal is input from the thermo coupler,
Between the thermo coupler, the first bimetal switch and the magnet switch, a multi-contact selection switch and a second bimetal switch having one movable terminal and first to third fixed terminals are additionally installed, and the movable terminal of the multi-contact selection switch is provided. The first and second fixed terminals are connected to the magnet switch through the first and second bimetal switches, and the third fixed terminal is directly connected to the magnet switch. Gas range.
The method according to claim 3,
The first and second bimetal switch is a gas range having a forced over-temperature release function, characterized in that installed separately for the low temperature and high temperature detection.
The method of claim 4,
The first bimetal switch for low temperature detection sets the temperature to be "off" between 140 ° C and 230 ° C, and the second bimetal switch for high temperature detection sets the temperature to "off" between 230 ° C and 280 ° C. Gas range with forced overheating release function.

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