KR910007345B1 - Flame regulation structure of gas range - Google Patents

Abstract

The gas range controller generates an alarm signal when cooking is finished or requlates flame when the cooking temperature has to be lowered. The controller comprises a temperature sensing rod (6) directly inserted into the food, temperature sensing elements (7,10) within the rod (6) switching according to the food temperature, a control knob (9), positioned at one end of the rod (6), for setting a reference temperature, a thermostat (1) connected in series to the temperature sensing elements (7,10), and a magnetic power unit (MG) coil for actuating a gas valve (3) corresponding to the reference temperature set at the control knob (9).

Description

Flame control device according to food cooking temperature of gas range

1 is a block diagram of an automatic fire extinguishing device according to the present invention.

2 is a detailed configuration of the temperature sensing rod of the present invention, a is a diagram using a bimetal, b is a diagram using a bellows.

3a, b, c is a state diagram of the temperature sensing rod of the present invention.

Figure 4a, b is a cross-sectional view of the present invention is provided with a hole or a micro passage for the gas fine supply to the gas valve.

5 is a state diagram configured using a contactless temperature sensor in the temperature sensing rod according to the present invention.

6a, b is a circuit diagram of the timer switch and the temperature switch of the temperature sensing rod for the automatic fire extinguishing device according to the present invention connected.

Figure 7a interconnects the temperature control IC and the timer IC according to the present invention, and b is a temperature sensing rod with a built-in temperature switch according to the present invention can be connected to the timer IC to delay the predetermined time after reaching the set temperature to control the flame One embodiment circuit diagram.

FIG. 8 is a circuit diagram when the functions of FIGS. 5 and 7 according to the present invention are microprocessorized.

9 is a circuit diagram when a junction of a thermocouple is used as a temperature sensor of a temperature sensing rod according to the present invention.

10 is a state configured to operate wirelessly without a lead wire to the temperature sensing rod according to the present invention.

11 is a circuit diagram configured to operate without a lead wire in the temperature sensing rod according to the present invention.

12a, b is a circuit diagram configured to generate an alarm signal upon completion of cooking in combination with the temperature sensing rod and the signal generating temperature control IC according to the present invention.

* Explanation of symbols for main parts of the drawings

4: valve tube 6: temperature sensing rod

7, 7 ', 10: temperature sensing element 8: temperature control rod

9: Temperature control knob 9a, 9b: Terminal piece

20: lid 21: hole

24: support 27 ': fine hole

27 ": Microtube SRe, SRe ', SRe": Relay Switch

RL: Relay VR, VR ': Variable resistor

TM: Timer Switch MP: Microprocessor

The present invention relates to a gas range capable of automatic cooking that generates a cooking raw material alarm signal when cooking is completed, or automatically extinguish a flame of a burner or adjusts the heat of a moth to a warm flame. The present invention relates to a flame control device for a gas range using a temperature measurement of a cooked product to control an alarm signal or flame in a gas range at a temperature when it is fully cooked by measuring with a sensing rod and to adjust the state of the circuit to be controlled.

The conventional cooking gas range has a inconvenience that the user must manually check the cooking condition and then manually extinguish the flame when the cooking is completed or the moxibustion to adjust to the warm flame.

Therefore, since it was not possible to know the exact point of completion of cooking beforehand, not only had to manually adjust the flame according to experience and sensation, but also had a very uncomfortable use in which there was a food burn or a fire hazard if the flame was not forgotten and the flame was not adjusted. will be.

In order to solve this problem, it has been proposed to add a timer function to the gas range, but there is a disadvantage in that they cannot detect the completion point of cooking of food, and a structure in which a temperature sensing rod having a temperature sensor is in close contact with the bottom of the cooking vessel. Although it was proposed to be installed above the burner center of the furnace, this also had a disadvantage in that it could not accurately detect the internal temperature of the food cooked in the cooking vessel and could not grasp the completion state of the cooking.

In order to solve the drawbacks of the conventional gas range, the present invention is devised to control the temperature of foods cooked in a grill, oven, or cooking vessel, such as a bimetal switch, a bellows-type switch (thermostat), or a thermistor filled with gas. It is a temperature sensing rod with a built-in temperature sensor that directly detects the temperature when the solid is actually cooked by directly inserting it into solids such as meat, fish, and sweet potatoes, rather than the temperature of the soup in the cooking vessel. The fire extinguishing of the gas range or the moxibustion can be adjusted to the thermal flame to be described in detail with the accompanying drawings according to the embodiment as follows.

Example 1-1

1 is a configuration diagram of the automatic fire extinguishing device according to the present invention, Figure 2 is a configuration detail of the temperature sensing rod in the present invention as a temperature sensing element in the temperature sensing rod (6) bimetal switch or bellows switch (thermo It is an Example in the case of using mechanical contact switches, such as start). In the existing gas range, the gas is supplied to the burner 5 or shut off by operating the ignition knob interlocked with the opening / closing rod of the gas valve 3 of FIG.

If the gas is supplied to the burner by operating the ignition nozzle, the moment the flame is transferred to the burner by the piezoelectric element, the supplied gas is ignited. When the temperature of the ignited flame is sensed with a thermocouple, electromotive force is generated and this electromotive force is opened by the knob. It is equipped with a configuration that the gas valve (3) to continue to open by pulling the opening and closing valve cap, the temperature sensing rod (6) directly plugged into a separate cooking contents in the thermocouple (1) as shown in the first of the existing technical configuration The temperature sensing rod 6 is connected to a lead wire to be handled separately in a combustion state by connecting the temperature sensing rod 6 to the temperature sensing rod 6 at a predetermined temperature that is set by turning a temperature control knob. Set up a temperature switch configuration to shut off the cloud, and the different types of foods have different internal temperatures when they are fully cooked. Controls Install an adjustable configuration to choose from.

In the switch configuration and the temperature selection control configuration, a configuration using bimetal as shown in FIG. 2 (a) and a bellows filled with gas as shown in FIG. 2 (b) can be provided. Two terminal pieces 9b and 9a are installed inside the tip of the temperature sensing rod 6, one of which is made of known bimetal, which is opened and closed by " on " " off " Install the temperature switch (7).

In addition, a thread (8a) is formed at the rear end of the temperature adjusting rod (8) to be inserted into the outside of the temperature sensing rod (6) so that the tip contacts the bimetal, and the temperature adjusting knob (9) is fixed at the end.

And the temperature sensing rod (6) to form a screw hole (6a) is the temperature adjusting rod (6) is fitted to the screw thread (8a) and the screw hole (6a) is combined to have a control function.

The configuration and operation state of the temperature control knob 9 and the temperature control rod 6 of the bimetal switch is the same as the principle known in the electric iron, hot plate, coffee pot, and the like.

In addition, in the case of FIG. 2 (b), a gas expanded by heat is enclosed in the temperature sensing rod 6, and at the end exposed to the air of the temperature sensing rod 5, a gas such as a thermostat known to a temperature controller for a refrigerator is used. Bellows 10 and the switch (not shown) and the temperature control knob 9 is formed to expand and contract according to the state of.

Further, the micro-hole 27 'is drilled in the gas valve opening / closing cap 27 adjusted according to the above configuration as shown in FIG. 4 (a) or the micro-pipe (s) in the valve tube 4 as shown in FIG. 27 " in parallel to allow a small amount of gas to be supplied to the micropores 27 'or the microtubes 27 " even when the valve tube 4 is closed by the cap 27. When the valve tube 4 is closed by operation, the flame of the burner may not be completely extinguished, but may be kept as a small flame effective for moxibustion or warming.

Embodiment 1-1 having such a configuration rotates the temperature control knob 9 installed in the temperature sensing rod 1 and adjusts the temperature control knob to the temperature setting point of cooking according to the contents of meat, fish, vegetable solids, milk, and the like. (9) turn the temperature to set the temperature, and then cook the solid in the cooking vessel or the liquid to be boiled, that is, when boiling the milk, plug it directly into the milk so that the temperature sensor detects the milk temperature, and the fish or meat is boiled. The temperature sensing rod (1) directly inserted into the fish or meat is to sense the temperature of the fish or meat directly. When the ignition knob (26) of the gas range of FIG. The switches 7 and 10 in (6) are in the " on " state so that the thermoelectric power is supplied to the magnet powder unit coil to keep the gas shutoff valve cap 27 open so that combustion continues. this Air is heated in a food cooking vessel that is heated by combustion in the burner lasts.

When the food is heated, the temperature rises, and when the temperature continuously rising reaches the temperature at which the food set by the temperature adjusting knob is fully cooked, the switches 7 and 10 of the temperature sensing rod 6 are "off". Will be

That is, in the case of the bimetal switch 7 as shown in FIG. 2 (a), when the food reaches a ripening temperature, the moment when the bimetallic terminal piece 9b is separated from the contact point to which it is connected, the thermoelectric power is released. Since the valve cap 27, which is in an open state by the thermoelectric power, is blocked, the spring is received by the spring to close the gas inlet of the valve.

In the case of the bellows switch (thermostat) as shown in FIG. 2 (b), when the temperature is fully ripened, the expansion force of the gas extends the bellows to turn off the switch (not shown) to cut off the thermoelectric power. do.

When the thermoelectric power is cut off, the valve cap 27 in the open state receives the elasticity of the spring to close the inlet of the valve.

However, in the configuration in which the fine hole 27 'is drilled in the cap 27 of the valve as shown in FIG. 4 (a) or the microtube 27' 'is connected in parallel to the valve tube 4 as shown in FIG. Even when the gas inlet 4a of the valve 3 is closed, a minute amount of gas is supplied through the minute hole 27 'or the pipe 27 "so that the flame of the burner 5 becomes a small flame, and the moxibustion function or heat retention is maintained. It will function.

As described above, according to the embodiment of the present invention, since the housework supplied to the burner is reduced or reduced to a small amount at a temperature fully cooked according to the internal temperature of the food, the risk of overheating is excluded, and thus a very safe cooking operation can be performed. If the food is fully cooked without the user checking the food's ripening condition, the ignition flame of the gas range is automatically reduced or extinguished, which is very convenient to use and does not need to check the food's ripening condition.

In addition, when the above-described bimetal switch or bellows switch is installed on the temperature sensing rod, when the existing timer switch TM and the temperature sensing rod temperature switches 7 and 10 of the present invention are used together, FIG. Of course, the two switches can be used in series as in a).

In the case of using the magnet power unit using two coils in the Utility Model Registration Application No. 88-18907 among the applicant's prior application technologies, the timer switch TM and the temperature switches 7 and 10 are shown in FIG. After connecting in parallel with each other as shown in b) it may be used in series between the existing thermocouple (1) and the coil of the opposite polarity in the applicant's prior application technology.

Example 1-2

This embodiment is an example in which a contactless temperature sensing rod is installed.

5 is a state diagram in which a temperature control circuit is configured in a temperature sensing rod according to the present invention. In the temperature sensing rod 6 inserted into food, a non-contact temperature sensor 7 'such as NTC, PTC, thermocouple, etc. Connect the sensing sensor 7 'to the input terminal of the temperature control IC, connect the relay R ₁ to the output terminal of the temperature control IC to which external power such as battery V is supplied, and SRe) is formed in a structure that is connected in series between the conventional thermocouple (1) and the magnet powder unit coil.

In the figure, reference numeral VR denotes a variable resistor for temperature setting.

The operation state of the contactless temperature sensing rod having such a configuration is that when the temperature is heated to a temperature where the food is fully cooked by igniting the gas range by inserting the temperature sensing rod 6 into the food stored in the grill or oven and the container, the operation is performed as described above. The state and method of use are the same as those of the bimetal switch type and the bellows type switch of Example 1-1. However, the operation of the contactless temperature sensing rod changes the resistance value in the case of NTC and PTC of the temperature sensing element used as the sensor in the sensing rod according to the temperature rise of the heating material, the electromotive force in the thermocouple, and the resistance value of the sensor is VR. When the resistance value is set to or when the electromotive force of the sensor reaches the voltage across the VR set to VR, the voltage is output to the output terminal of the temperature control IC (IC) to drive the relay (R _L ) pole.

" 와 "

"상태로 설계할 수 있다.Here, the output voltage of the output stage is reduced depending on the strength and weakness of the suction force of the gas shutoff valve driving electromagnet (magnet powder unit).

" Wow "

"You can design in state.

As a result, the relay contact, which was normally in the "on" state, is "off", and the switch SRe of FIG. 5 is "off", so that the gas shutoff valve cap 27 is resilient to the spring as described above. 4) Close and extinguish the flame of burner.

At this time, when the fine hole 27 'is drilled in the valve cap 27 or the fine pipe 27 "is installed in the valve tube 4 as shown in FIGS. It turns into a flame.

Example 2

This embodiment is an embodiment in which the time delay function is added to Examples 1-1 and 1-2 to measure the temperature of the food that is being cooked in the heating state of the food, and the amount of gas supplied to the burner as soon as the temperature is completely ripe Reduction may reduce the completeness of the whole food's cooking. Therefore, when the sensing part of the sensing rod has reached a fully ripe temperature, it does not immediately extinguish the flame, but continuously maintains the flame for one hour, and cuts or reduces the amount of gas so that the flame becomes a fire or a small flame. It is aimed at preventing food from being cooked at another position where the temperature sensing rod is not inserted and making food cooked more completely.

Such a configuration and operation of the second embodiment are as follows.

As shown in Fig. 7 (a), the output terminal of the temperature control IC and the input terminal of the timer IC are coupled to each other, and the temperature sensor 7 'in the temperature sensing rod 6 is connected to the input terminal of the temperature control IC, and the output terminal of the timer IC is connected. In this embodiment, which is configured to connect the switch N (SRe ') opening and closing relay (R _L ), when the temperature control IC generates an output at a constant temperature by sensing the temperature of the temperature sensing rod, it is input to the timer IC, and from this point on, VR After the time delay set to ', the output of the timer IC is generated. The output of the timer IC drives the relay R _L so that the switch SRe of FIG. 7 is " off " The gas shutoff valve cap 27 closes the valve tube 4 by closing the valve.

Therefore, cooked foods are characterized by being fully cooked.

Here, instead of the timer IC, a time delay circuit composed of a known resistor and a capacitor may be coupled to the output terminal of the temperature control IC.

In addition, in the case of using the temperature sensing rod 6 configured as shown in FIGS. 2A and 2B, a separate temperature control IC may not be required. That is, it can also be configured as shown in FIG.

That is, when the temperature switch is "on", power is supplied to the timer IC and an output voltage is generated at the output terminal after a time delay set to VR 'to drive the relay to "turn off" the relay switch SRe'. Function

In addition, a known microprocessor technology may be used for the user's convenience of operation.

That is, until now, when the temperature sensor is inserted into the food, the cooking temperature suitable for the food is controlled by the control knob 9 installed behind the concentration sensor in the case of the temperature switch, or VR in the case of the contactless temperature sensor. As shown in Fig. 8, the heating temperature and the necessary delay time of various foods were input in advance using the microprocessor (MP) as shown in FIG. By configuring the warming switch (SW1) and the cooking switch (SW2) to connect the temperature sensor (7 ') or the temperature switch (7) in the temperature sensing rod (6) to the input terminal, the user wants to cook or cook food Select only the type switch (SW3-SWn), the cooking switch (SW1), and the warming switch (SW2) and specify the temperature switch (6). It may be cooked automatically to the desired range by controlling the gas combustion apparatus to be cooked.

Example 3

In this embodiment, in the above-described embodiments 1-1, 1-2 and 2, the connection cords between the temperature sensing rod, the gas shutoff valve such as the gas range or the gas oven, and the driving circuit are wirelessly connected. As an embodiment characterized in that the configuration as shown in Fig. 10, the power supply is formed at one end of the temperature sensing rod, the transmission unit 28 with a well-known wireless transmission circuit, and the receiver unit with a known wireless reception circuit in the body of the gas range ( It becomes the structure which installed 29).

The transmission and reception circuits of the transmission unit 28 and the reception unit 29 in such a configuration are known electromagnetic wave or sound wave transmission and reception circuit diagrams, and thus, the temperature switches 7 and 10 and the temperature detection sensor in the temperature sensing rod 6. When (7 ') reaches the set temperature, the transmitting circuit installed at the end of the temperature sensing rod is activated to generate electromagnetic waves or sound waves, and the receiving signal in the gas appliance such as gas range or gas oven receives the signal. By controlling the gas shutoff valve cap to control the gas supplied to the burner by blocking or fine supply.

The configuration of the radio transmitting / receiving circuit is already used for a radio control toy, a radio lighting switch, and the like, as known in Fig. 11.

Here, in the case of wireless radio wave transmission and reception, the transmission and reception transmission plate instead of the transmission and reception antenna of FIG.

Embodiment 3 of the present invention as described above is characterized by the convenience of use due to the disappearance of the connection cord of the temperature sensing rod and can be cooked exactly the same food as in the above embodiments 1-1, 1-2 However, when applied to Example 2, the food in which the sensing rod is inserted is completely ripe and then continues to burn for a certain time, and then the flame of the burner is turned off or reduced to a small flame suitable for steaming, so that the heating object in the container has a uniform ripening effect. Since the user does not have to check and watch, there is a very convenient advantage for the user to use the gas range.

Example 4

In this embodiment, the cooking completion point of the cooked food is notified to the user by electromagnetic waves or sound waves, and the flame control of the burner is an embodiment that allows the user to operate manually. It is very convenient to start the next cooking immediately, and there is no contact between the thermocouple and the magnet powder unit coil, so the voltage drop caused by the contact resistance of the thermocouple thermoelectric power is generated. It is characterized by the fact that no delay is caused, and its configuration and effect are as follows.

12 (a) and (b), a temperature sensing rod having a temperature sensing switch 7 or 10 or a temperature sensing element 7 'is connected to an input terminal of a temperature control IC, and a power supply V (V' The speaker or light emitting device is connected to the output terminal of the temperature control IC.

VR is a variable resistor for temperature setting.

Put the cooking rod into the temperature sensor and then ignite the gas appliance as usual.

And the cooking temperature according to the type of food is set to VR in the case of the temperature control knob (9) or 12 (b) of FIG. 12 (a).

When the temperature of the cooking contents is raised by the flame of the burner and the set temperature is reached, a signal is output from the output terminal of the temperature control IC to generate an alarm sound, or a light emitting signal is generated when the light emitting element is installed at the output terminal. The user will be notified of the completion and the user can adjust the gas control cock manually or after a while to reduce or extinguish the flame.

Here, the circuit part A and B of FIGS. 1 (a) and (b) may be integrally formed at the tile end of the temperature adjusting rod 6, and the temperature adjusting element 6 is provided with a temperature sensing element switch 7, (10) or only the sensor 7 ', the parts A and B in Figs. 12A and 12B, which are the power supply and the circuit part, may be provided in the body of the gas appliance.

In the above embodiments, the alarm switch output terminal may be configured separately using the contact switch in the embodiments 1-1, 1-1, 2, 3, and 4, or when the temperature control IC is designed. It can be configured by connecting to the output terminal of the IC is possible by known techniques.

In this case, the signal is generated along with the flame control, thereby providing convenience of use.

The present invention as described in the above embodiments 1-1, 1-2, 2, 3, 4, when cooking food using a gas range or a gas oven, such as cooking temperature by directly detecting the temperature of the cooking contents with a temperature sensor rod When completed, it can be notified to the user by sound or light signal, or by driving the internal circuit of the gas appliance to burn or control the flame of the burner.

In addition, in the above-described embodiments 1-1, 1-2, 2, 3, 4, the temperature sensing rod 6 drills the insertion hole 21 in the lid 20 of the heating vessel as shown in FIG. The temperature sensing rod 6 may be inserted through the hole 21 to insert the temperature sensing rod 6 into the food to detect the temperature of the heated food.

In addition, when the temperature sensor 7 'is used in the temperature sensing rod 6, since the temperature sensing rod 6 can be bent freely, the state of the dashed line and the temperature sensor ( 7 ') can also be stored in the lid itself.

In addition to the installation state of the temperature sensing rod, as shown in FIG. 3 (c), a support 24 folded into the gas range main body 25 is installed, and temperature switches 7 and 10 are built in the front end of the support 24. It can also be configured to be inserted into the food in the bowl by inserting the temperature sensing rod (1).

Claims (5)

In the cooking gas appliance composed of a thermocouple for supplying the thermoelectric power to the magnet power unit for detecting the flame heat of the burner and the burner to drive the gas opening and closing valve, a temperature sensing rod (6) to be directly plugged into the cooking contents, A temperature sensing element (7), (10) is built in the temperature sensing rod (6) to open and close according to the temperature change of the cooking contents, and the temperature for controlling the opening and closing operating temperature of the temperature switch (7), (10) The temperature control knob including the adjusting rod is configured at the tile end of the temperature sensing rod 6, and the temperature switch in the temperature sensing rod 6 is connected in series between the thermocouple and the coil of the magnet powder unit along the lead wire to burn the furnace. When the temperature of the cooking contents reaches the temperature set by the adjusting knob 9, the temperature switches 7 and 10 are “off” so that the gas valve is driven by blocking the thermoelectric power of the thermocouple so as to control the burning of the burner. Flame control device according to the food cooking temperature of the stove, characterized in that that generated. In a cooking gas appliance composed of a thermocouple supplying thermoelectric power to a magnet power unit that senses flame heat of a burner and a burner and drives a gas opening / closing valve, a temperature sensing rod for directly sensing the temperature of the cooking contents by directly inserting the cooking contents into it. (6), the temperature sensing rod (6) is connected to the temperature sensing IC (7 '), such as PTC, NTC, thermocouples to the input terminal of the temperature control IC, connected to the variable resistor (VR) and power (V) A relay (R _L ) is connected to the output terminal of the temperature control IC, and a relay switch (SRe), which is 'on' and 'off' when the relay is operated, is configured in series between the thermocouple and the coil to increase the temperature of the cooking contents by the burner. When the temperature set to VR is reached, relay switch (S _L ) is "off" by relay (R _L ) operation. Flame control device according to the food cooking temperature of the gas range to be gong. In a cooking gas appliance composed of a thermocouple for supplying thermoelectric power to a magnet power unit that detects flame heat of a burner and a burner and drives a gas opening / closing valve, a temperature sensor in a temperature sensing rod 6 directly inserted into the cooking contents. Of the timer IC connected to the input terminal of the temperature control IC by a lead wire, and to the output terminal of the temperature control IC to which the power supply and the temperature control variable resistor (VR) are connected, and to the power supply and the delay time variable resistor (VR '). The burner's heating furnace is configured by connecting the inputs to each other, connecting the relays that drive the relay switch (SRe ') to the output terminal of the timer IC, and connecting the relay switch (SRe') in series between the pole and the magnet powder unit coil. After the cooking contents reach the temperature set in VR, the relay switch (SRe ') is activated by the relay drive after the time delay set in VR'. Print "is flame control device according to the food cooking temperature of the stove, it characterized in that the gas valve is driven in the power-down opening of a thermocouple configured to control the flame of the burner. In a typical cooking gas appliance, the temperature sensing rod 6 is inserted into the cooking contents and the temperature sensing elements 7, 10, and 7 ′ are placed at one end of the sensing portion of the temperature sensing rod 6. When the food and food reaches the set temperature, it is installed and sealed in a circuit that is connected to the signal generator such as power supply, temperature control variable resistance (VR ') and sound emitting device. Flame control device according to the food cooking temperature of the gas range, characterized in that for generating a signal informing the control set point. According to claim 1, by connecting a known timer switch (TM) in series with the temperature sensing switch (7) (10), the flame after a certain time due to the flame control of the gas range according to the various cooking contents temperature detection at the same time Flame control device according to the food cooking temperature of the gas range, characterized in that for adjusting the.

Images