CN2429760Y - Computer gas stove - Google Patents

Abstract

The computer gas cooker is to add a computer control panel, a temperature measuring hand, a solenoid valve, an electric control flow valve, a display screen and a sound device on the existing gas cooker. The servo mechanism is composed of electric and gas switch control, automatic ignition control, temperature detection control, automatic fire control, intelligent fuzzy control, gas leakage control and other devices. There are three safety devices: ①Limiting the gas supply time ②Automatic ignition, the flame goes out unexpectedly Re-ignition ③Gas leakage alarm and shut off the gas source. Coal gas, liquefied petroleum gas, and natural gas can be used as heat energy to match with iron pans, aluminum pans, and pressure cookers of various calibers, and the fully automatic control of cooking, stewing, stewing, stewing, boiling water, and constant temperature heating can be performed at any time.

Description

computer gas stove

The invention relates to an automatically controlled computerized gas stove.

As we all know, the gas and liquefied gas stoves currently used in the society have to be manually operated from opening the gas valve, igniting and cooking, adjusting the fire, cooking and closing the gas source, and the cooking process must be attended by personnel, otherwise it is easy to cause food burnt or burnt. The soup overflows, causing the gas to be extinguished, leaked, and cause an accident. Accordingly, people transform the gas stove and propose to increase the self-control supporting device. Disclosed as Chinese patent CN1101972A: " the multi-functional safety and control circuit of liquid fuel burner ", it has automatic ignition system, makes kitchen range have flameout automatic recombustion ability, gas leakage alarm, the function of gas-holding. Chinese patent CN-2286838N discloses a "gas stove microcomputer controller" which sends information from a single-chip microcomputer to control the solenoid valve and relay action, so that the gas circuit is shut off in time, realizing regular cooking and over-temperature alarm and flameout. Chinese patent CN-2047759N discloses "gas automatic control cooker", its function includes automatic realization: ignition, high fire timing heating, temperature control heating, turning to low fire timing heating, gas leakage fire alarm and gas stop alarm. Above device all only partially solves the part problem of gas stove.

The purpose of the present invention is to overcome the above defects and provide a computer-controlled computer gas stove with good comprehensive performance and wide applicability. (See Attached Figure 1) It can use various gases as heat energy, and is matched with various types of iron pots, aluminum pots, and pressure cookers. control function.

The scheme of the present invention is that the gas cooker is additionally equipped with a computer control panel, a temperature measuring hand, an electromagnetic gas on-off valve, an electric gas flow regulating valve, and a sounding device; the cooker shell (1) is designed in a rectangular structure. An LED display screen (7) is installed in the middle of the front panel; a button (8) for adjusting the clock and temperature; an interlock button (5) for selecting various cooking and cooking utensils; and a corresponding light-emitting diode indicator light (4 ); loudspeaker (9); the temperature measuring hand (6) that can rotate 360 degrees freely, lift up and down, and freely extend and shorten in the center behind the cooking surface; the computer control circuit board (shown in Figure 2 and Figure 3) is equipped with Electric and gas switch control device (Fig. 3-1), gas volume control device (Fig. 3-2), automatic ignition control device (Fig. 3-3), temperature detection control device (Fig. 3-4), intelligent fuzzy control device (Fig. 3-5), the gas leakage control device (Fig. 3-6) is composed of six servo devices; the electric and gas switch control device (Fig. 3-1) is composed of transformer B ₁ , liquid crystal electronic clock, IC ₁ , voltage regulator integration Circuit U ₁ , relay K ₁ , music integrated block IC ₂ , regulator tube DW and capacitor C, capacitor C _1-4 resistors R _1-5 , R _28-29 , switch tube D ₇ , rectifier tube D _1-4 , Buzzer HTD, speaker Y, light-emitting diode LED _1-2 , solenoid valve K ₄ ; gas flow control device (Figure 3-2) is composed of transformer B ₂ , three-terminal voltage regulator integrated U ₂ , IC ₅ , reed switch K ₅ , K ₈ , relay K ₆ , K ₇ , motor M, intake valve and switch tube D ₁₄ rectifier tube D _8-12 , resistor R _19-21 , capacitor C _9-10 , C _13-14 ; automatic The ignition control device (Fig. 3-3) consists of photodiode PD, integrated circuit IC ₆ , relay K ₉ , small transformer B ₃ , high voltage transformer B ₄ , resistors R _22-27 , capacitors C _11-12 , triode V ₄ , V ₅ , V ₆ , switch tube D ₁₅ , 1.5 volt dry battery, and ignition needle; the temperature detection control device (Figure 3-4) consists of programmable temperature control ICHX1281, microcontroller HXTMP intelligent digital display temperature control board, And relay K ₂ , triode V ₂ , switch tube D ₆ , button AN _11-12 and a mechanical detection hand (6) that can rotate 360 degrees, lift up and down, and stretch back and forth; intelligent fuzzy control device (Figure 3-5) Composed of IC ₃ , six-position interlock button AN _5-10 , diode D ₇ , six light-emitting diodes, boiling indicator diode LED ₃ , resistor R _14-18 , R ₃₀ capacitor C _5-6 ; gas leakage control device (Fig. 3-6) It consists of QM-N5 gas sensor, integrated circuit LM311, triode V ₃ , relay K ₃ , resistors R _7-13 , R ₄ , RT, and capacitor C _7-8 ; volt DC solenoid valve, the gas flow regulating valve is composed of a motor M and a regulating valve.

Compared with existing various gas stoves and various control technologies, the computer gas stove designed according to the present invention has the following advantages:

1. The computer gas stove has various functions such as timing opening and closing of the gas valve, automatic temperature adjustment and control, automatic ignition, flameout, gas leakage alarm and gas source shutdown, artificial intelligence fuzzy control, constant temperature heating, and music notices.

2. Fully automatic fire control, when it starts to cook on high heat, when the food in the pot reaches the boiling point, it will automatically adjust the fire to maintain the boiling point temperature, if it is lower than the boiling point temperature, it can automatically switch to high heat for heating. The gas valve and power supply are automatically turned off when the food is cooked. If it is heated at a fixed temperature, the gas source will be turned off when the set temperature is reached.

3. You can pre-determine the cooking time, 24 hours arbitrarily choose, and can be set five times a day, then the computer gas stove will automatically complete the cooking process according to the set time, once set and used repeatedly, you can do whatever you want. And equipped with a backup power supply, not affected by power outages.

4. Easy to operate. Just set the time, choose the type of cooking, put the pot and food, press the button, the temperature measuring hand will automatically rise from the stove body, automatically adjust the height and orientation, and press the temperature measuring head on the pot cover , When the time is set, it can automatically cook, cook the music notice and automatically turn off the gas and power.

5. The computer gas stove has wide applicability. Coal gas, liquefied petroleum gas, natural gas, and biogas are all suitable as long as they are equipped with corresponding burners and regulating valves, and no special pots are required. Any type of aluminum pot, iron pot, and pressure cooker can be used as a set.

6. With artificial intelligence fuzzy control function. Automatically cook, stew, stew, soup, dry rice, porridge, boil water, etc. under no one's supervision, and the soup will not overflow, the food will not be burnt, and the degree of cooking is just right; the food can be heated at a fixed temperature, Meet various needs of daily life.

7. Automatic ignition. As soon as the gas valve is opened, it will automatically ignite, and the ignition will automatically stop after the gas is ignited; if the flame is extinguished due to external reasons, it will automatically re-ignite and ignite the gas again.

8. Energy saving. Automatically control the fire intensity, when cooking food, it can be divided into strong and weak fire intensity, and can be adjusted automatically.

9. Safe and reliable. Equipped with multiple safety protection devices, (1) Automatically limit the gas supply time; (2) Automatic pulse ignition, re-ignition when the flame goes out accidentally, until the gas is ignited; (3) In case of gas leakage, it can alarm and automatically shut down the power supply and gas source. It can avoid accidents such as food scorching, gas extinguishing and leakage, and ensure the safety of users' personal and property.

10. The temperature measuring hand can rotate 360 degrees freely, lift up and down, and stretch back and forth. It can be operated freely and does not need to be used in conjunction with the pot.

The whole cooking process of the computerized gas stove is further described below through the best example and in conjunction with Fig. 1 , Fig. 2 , Fig. 3 and Fig. 4 . Figure 1 is a schematic diagram of the front appearance of the computer gas stove. Fig. 2 is a schematic diagram of the circuit structure of the computer gas cooker. Fig. 3 is a schematic circuit diagram of the computer gas stove. Fig. 4 is a structural diagram of the computer gas stove temperature measuring hand.

(1) in accompanying drawing 1 is housing, (2) is burner, (3) is support, (4) LED indicator light, (5) eight interlock button, (6) temperature measuring hand, (7) ), time and temperature display, (8) time and temperature adjustment buttons, (9) speaker, (10) rubber feet.

(1) in the accompanying drawing 3 is an electric switch control device, (2) is a gas flow control device, (3) is an automatic ignition control device, (4) is a temperature detection control device, (5) is an intelligent fuzzy control device, (6) is a gas leakage control device.

(17) in the accompanying drawing 4 is a lateral support bar, (18) is a set screw, (19) is a set screw, (20) is a vertical support bar, (21) is a sphere, (22) is a base plate, (23) ) is the temperature probe.

Shown with reference to accompanying drawing 1,2,3,4, the size of housing is 720mm * 476mm * 200mm (length * width * height). The surface is made of 0.5mm stainless steel forging and pressing, the four corners are arc-shaped, and a layer of Teflon paint is added to prevent oil from sticking. The feet are injected with rubber. The various components of the gas stove such as the housing, the burner, and the intake pipe are fixed by fasteners. The electronics should have the functions of opening five times a day, closing five times, and setting alarms at regular intervals. The power supply is powered by a 1.5-volt battery (No. 5), and the battery box and the electronic clock shell are connected together; It and the microcontroller HXTMP intelligent digital display temperature control board, six-position interlock button (5), light-emitting diode (4) (φ3), and speaker (9) are respectively fixed at the corresponding positions directly in front of the housing as shown in Figure 1 ; The power supply in the automatic ignition device (Fig. 3-3) is fixed in the body with a 1.5 volt battery (No. 2) by a special box. The solenoid valve model is Q23XD-2L, the working voltage is DC 24 volts, it is installed at the back of the shell, the air inlet is connected with the rubber hose, and the air outlet is connected with the air inlet valve of the burner through the aluminum pipe; the working voltage of the motor M is DC 12 volts, the main shaft end of the motor is equipped with a permanent magnet, which kisses the intake valve of the burner through gears, drives the intake valve forward and reverse, and adjusts the amount of gas entering the burner; the reed switch K ₅ is normally open. The reed switch K ₈ is normally closed, and is respectively installed on both sides of the motor M shaft. The position where the normally closed reed switch K ₈ is installed is when the motor drives the intake valve to the burner flame, and the motor M The shaft magnet just makes it suck open; the position where the normally open reed switch K ₅ is installed is in the reverse direction of the motor, which drives the intake valve to the weakest position of the burner flame. (can keep the boiling temperature in the pot without extinguishing), that is, the magnet on the motor M shaft is just at the position of the reed switch K ₅ ; the transformer B ₂ selects a power of 40 watts, and the output voltage is the second gear of 24 volts and 12 volts. Transformer B ₁ has a power of 3 watts and an output voltage of 7.5 volts. The spare parts of the six servo mechanisms on the computer board are installed according to the models and values marked in the circuit principle (Figure 3): the above transformers and computer boards are installed in Inside the stainless steel box, it is fixed at the center of the front of the shell. Burner selection, if you use liquefied petroleum gas, choose a burner for liquefied petroleum gas; if you use gas, use a gas burner; the temperature measuring hand can be designed as electric or manual, and the temperature measuring hand of this machine is manual The structure is shown in (Figure 4). Its supporting member is designed to rotate 360 degrees, lift up and down, and stretch back and forth, so as to adapt to pressing on the lids of different types of iron pots, aluminum pots, and pressure cookers; its horizontal and vertical Support rods (17, 20) are all formed by socketing four stainless steel pipes of different lengths and diameters, three of which can be elongated or shortened to a certain extent; The 20mm sphere is welded, the sphere (21) is contained in a stainless steel box of 50×30×26, and the central part of the bottom surface of the box is stamped into an arc-shaped surface with a diameter of 22mm to coincide with the sphere (21), so that the vertical support rod It can be rotated 360 degrees; the other end and the horizontal support rod (17) are connected and fixed with screws, and the other end of the horizontal support rod (17) is welded to a stainless steel box (23) with a specification of 45×20×15, and a programmable Temperature control ICHX1281, the connecting wire of temperature measuring head and computer board passes in the horizontal and vertical support rods; photosensitive diode is contained in the side of burner (2), can receive on the flame position on the burner.

The working procedure of the computer gas stove when cooking is:

1. Provide power to each servo mechanism regularly, open the main gas valve, and adjust the gas flow. See picture (3-1), use buttons AN ₁ and AN ₂ . Set the timing time, set the maximum temperature with AN ₁₁ and AN ₁₂ , select the type of cooking with AN _5-10 , pull up the temperature measuring hand, adjust the height and angle, press the temperature measuring hand on the lid, and connect it AC power supply, transformer B ₁ secondary output 7.5 volts, rectified by D ₁ -D ₄ , three-terminal voltage regulator integrated U ₁ stabilized voltage output DC 5 volts, supplying power to electric and gas switch control devices and gas leakage control devices , at this time the LED ₁ indicator tube is on, indicating that the power supply is normal. When the LCD electronic clock has a timing signal output or the start button AN ₄ is pressed, pin ② of IC ₁ is at low level, pin ③ outputs high level, relay K ₁ is pulled in, and contact K _1-1 is connected to the power supply of transformer B ₂ . Each functional device is energized and enters the servo working state. At this time, the LED ₂ indicator tube lights up, indicating that it has entered the cooking program. The solenoid valve K ₄ is energized and closed, as shown in Figure (3-1), and the gas valve is opened. At the same time, the relay K _6. The normally closed contact of K ₇ supplies power to the motor M, and the motor M rotates. When the rotating shaft with the magnet is close to the normally closed reed switch K ₇ , the reed switch K ₇ is sucked open, and the motor M loses power and stops. At the same time, the gas control valve is opened to the maximum, and IC ₁ enters the delay timing state to control the opening time of the gas valve. When the preset time (about 30 minutes) is reached, the main gas valve is closed. Avoid accidents caused by failure of individual servo mechanisms.

2. Light the gas and start cooking.

While opening the gas valve and regulating the gas flow, the ignition device is energized to generate high-voltage pulse ignition through the ignition needle, which ignites the gas on the burner (see Figure 3-3). The light is weak until the burner is not lit. The internal resistance of the photodiode PD is large. At this time, pin ② of IC ₆ is at low level, and pin ③ outputs high level. Relay K ₉ pulls in and connects the power supply of the high-voltage generator. Vibrating through V ₄ tube and transformer B ₃ , the high-voltage Transformer B ₄ outputs a high-voltage pulse, which generates an ignition pulse at the ignition pin, ignites the burner, and starts cooking. After the gas is ignited, the photodiode PD is irradiated by light, and the internal resistance drops rapidly. It inputs high level to IC ₆ ② pin, IC ₆ ③ pin outputs low level, the relay K ₉ is released, the high voltage generator loses power, and the ignition pulse stops . Due to the mutual restriction between the photodiode PD and the high-voltage generator, once the flame goes out for some reason, the high-voltage generator outputs the ignition pulse again. After the burner is ignited, the photosensitive diode PD is irradiated by light, and IC ₆ pin ③ outputs a low level again , the relay K ₉ is released, the high-voltage generator loses power again, and the ignition pulse output is stopped to ensure that the burner flame will not be extinguished accidentally and cause an accident.

3. Control the cooking fire.

See (Figure 3-4), the gas flow control device consists of thermostat ICHX1281, HXTMP digital display temperature control board; relay K ₂ ; integrated circuits IC ₃ , IC ₅ ; relays K ₆ , K ₇ ; reed switches K ₅ , K ₈ and DC motor M and other components. It can be seen from (Figure 3-2) that when the power is turned on, the gas control valve has been opened to the maximum. After the power is turned on, the temperature control device starts to work, and the temperature measuring head pressed on the pot cover is detecting the temperature in the pot. (The temperature measuring hand can be raised and lowered at will, depending on the height of the pot). When the temperature is lower than the boiling point, the DQ pin of the adjustable temperature control ICHX1281 is low. When the temperature in the pot reaches the boiling temperature, it will reach the preset value of the ICHX1281. When the highest temperature is reached, the QD pin is activated and outputs a high level, which is output to the IC ₅ ② pin in (Figure 3-2) through the capacitor C ₁₃ , the circuit is reversed, the IC ₅ ③ pin outputs a low level, and the relays K ₆ and K ₇ Pull in, the motor M is energized and reversed, when the magnet attached to the rotating shaft is close to the normally open dry reed switch K ₅ , K ₅ is closed, and a negative pulse is sent to IC ₆ ② pin, and IC ₆ ③ pin outputs high power Flat, K ₆ and K ₇ are de-energized and released, and the motor M stops. At this time, the gas control valve is just adjusted to the low-fire state, and cooking continues.

4. Artificial intelligence fuzzy control for cooking.

When the temperature of the food in the pot reaches boiling temperature, the artificial cooking intelligent fuzzy control device composed of IC ₃ , resistors R ₁₄ -R ₁₈ , R ₃₀ , LED ₃ and capacitors C ₅ and C ₆ starts to work. See (Figure 3-5), since the DQ pin of the thermostat is activated at a high level, the Q tube is turned on, the relay K ₂ is energized and closed, and the power supply of the fuzzy control device is connected, and the indicator LED ₃ lights up to indicate that the pot has to a boil. IC ₃ enters the temporary steady state and starts timing. The circuit charges the capacitor C ₆ through the combination set in R ₁₄ , R ₁₅ , R ₁₆ , R ₁₇ , and R ₁₈ . The time required for the food to be cooked after boiling) At this time, the voltage of IC ₃ ⑥, ⑦ pins reaches 2/3 of the power supply voltage, and the circuit is reversed, from IC ₃ ③ pins to IC ₁ ⑥, ⑦ in (Figure 3-1) A positive voltage is input, the gap is short-circuited, the IC ₁ circuit is reversed, the relay K ₁ is de-energized and released, the transformer B ₂ is de-energized, the solenoid valve K ₄ is released, the main gas valve is closed, and the power supply of each servo mechanism is turned off , (Figure 3-1) the music integrated block ICKD153 is powered on, the trigger terminal is triggered by the positive potential of IC ₃ ③ pin, the speaker sounds, telling the owner that the cooking work is over.

5. Once the power supply is connected (Figure 3-6), the gas leakage alarm device consisting of QM-N5, LM311, relay K ₃ , transistor 3DG6, resistors R _7-13 , R ₄ Rt and capacitor C _7-8 starts Work. If the gas leaks during cooking, the CO in the air increases. When the CO reaches a certain concentration, the resistance between QM-N5 poles becomes smaller, and the detection electrical signal increases. After amplification, the relay K ₃ pulls in, and the normally open contact K _3-1 is closed, the capacitor C ₄ is short-circuited, the voltage of pins ⑥-⑦ of IC ₁ rises, the circuit of IC ₁ is reversed, the relay K ₁ is de-energized, each servo mechanism is de-energized, the solenoid valve is closed, and the gas source and power supply are cut off. Accidents were prevented.

Claims (3)

1, computer gas stove comprises gas-cooker, it is characterized in that setting up in the gas-cooker computer control panel, thermometric hand, electromagnetism burnt gas switch valve, electric gas flow control valve, news sound device; Kitchen range housing (1) is designed to rectangle structure, LED display (7) is equipped with in the center before the panel, regulates all kinds of the cooking and the interlocking button (5) of pan and light emitting diode lamp (4), the loudspeaker (9) of correspondence of button (8), manual actuation of button, selection of clock and temperature; Central authorities are equipped with and can 360 ° rotate freely oscilaltion, the thermometric hand (6) that freely stretches in front and back behind the kitchen range face; The computer control circuit board is made up of electricity, air cock control device, gas quantity regulation device, automatic ignition control device, temperature detecting and controlling unit, Intelligent Fuzzy Control device, gas leakage control device; Electricity, air cock control device are by transformer B ₁, liquid crystal electron clock, IC ₁, U ₁, relay K ₁, music integrated circuit IC ₂, voltage-stabiliser tube DW and capacitor C _1-4, resistance R _1-5, R _28-25, switching tube D ₇, rectifying tube D _1-4, buzzer HTD, loudspeaker Y form, gas flow control device is by transformer B ₂, IC ₅, tongue tube K ₅, K ₈, relay K ₆, K ₇, motor M, adjusting air valve and switching tube D ₁₄, rectifying tube D _8-12, resistance R _19-21, capacitor C _9-10, C _13-14Form; Automatically ignition control device is by photodiode PD, relay K ₉, transformer B ₃, high-tension transformer B ₄, and resistance R _22-27, capacitor C _11-12, triode V ₄, V ₅, V ₆, switching tube D ₁₅, the 1.5V dry cell, and the igniting pin forms, the temperature detecting and controlling unit is by temperature control IcHX1281 able to programme, micro controller HXTMP intelligent digital temperature control plate and relay K ₂, triode V ₂, switching tube D ₆, button AN _11-12And can 360 ° of rotations, oscilaltion, the telescopic thermometric hands in front and back (6) are formed; The Intelligent Fuzzy Control device is by IC ₃, six interlocking button AN _5-10, diode D ₇, six light emitting diodes, boiling indicator tube LED ₃, and resistance R _14-18, capacitor C _5-6Form; The gas leakage control device is by the QM-N5 gas sensor, integrated circuit LM311, triode V ₃, relay K ₃, and resistance R _7-13, R ₄, RT, capacitor C _7-8Form; The above-mentioned burnt gas switch main valve DC electromagnetic valve of 24V, be fixed on the back side in the housing, air inlet is connected with band tubing, the gas outlet is connected with the electric gas flow control valve by copper pipe or aluminum pipe, the electric gas flow control valve is made up of motor M and adjusting air valve, motor M front-end of spindle or adjusting valve shaft front end are equipped with permanent magnet, and its both sides are equipped with tongue tube K ₅, K ₈, tongue tube K ₅For open in usual, tongue tube K ₈Be normally closed type; Normally closed type tongue tube K ₈Institute's holding position is in motor drives to be regulated air valve and goes to burner flame when the most prosperous, and an axle upper magnet just makes its normally closed interlock inhale open position, often opens K reed pipe K ₅Institute's holding position is in motor counter-rotating, drives to regulate air valve and go to burner flame when being in little fire, and an axle upper magnet just makes on the position of its normally open contact adhesive.

2, it is characterized in that according to the described computer gas stove of claim 1: can 360 ° of rotations, oscilaltion, elastic thermometric hand is a thermometric on pot cover; Its horizontal stroke, vertical support bar (17,20) all be socketed to form with four stainless steel tubes of different length and diameter, the hollow ball welding of an end of one of maximum gauge and diameter 20mm in the vertical support bar (20), spheroid (21) is contained in the stainless steel box, the bottom central part of box strikes out the arcwall face of diameter 22mm, coincide with spheroid (21), the other end and transverse support bar (17) are connected and fixed with screw, the other end of transverse support bar (17) and a specification are stainless steel box (23) welding, temperature control IcHX1281 able to programme is housed in the box, and the connecting line of temperature measuring head and computer plate is from horizontal stroke, pass through in the vertical support bar.

3, computer gas stove according to claim 1 and 2 is characterized in that: be provided with 3 safety guards in the kitchen range, be respectively: (1), qualification gas supply total time device.(2), automatically igniting, fray-out of flame is automatic ignition device again.(3), gas leakage control device.

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