CN1711849A - Controller and controlling method for cooking food on gas oven - Google Patents
Controller and controlling method for cooking food on gas oven Download PDFInfo
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- CN1711849A CN1711849A CN 200410019547 CN200410019547A CN1711849A CN 1711849 A CN1711849 A CN 1711849A CN 200410019547 CN200410019547 CN 200410019547 CN 200410019547 A CN200410019547 A CN 200410019547A CN 1711849 A CN1711849 A CN 1711849A
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- baking oven
- coal gas
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Abstract
A controller for gas oven used to cook food is composed of burner, igniter, flame detector, temp detector, electromagnetic valve for the gas channel of burner, and linear valve for controlling the gas flow of said gas channel. Its control method features that the gas flow is controlled by said linear valve according to the internal temp of cooking chamber.
Description
Technical field
The present invention relates to a kind of coal gas baking oven, the control device that uses when cooking food in the turn out the gas baking oven is especially arranged with and control method.
Background technology
In general, the coal gas baking oven is the associativity electrical equipment that is combined into one by burner, baking oven device, spit, select suitable heater in three kinds of heaters according to the kind of the cooking object or the cooking, under the prerequisite of having selected heater, utilize heating means such as burner or heating element to come cooking food.
In the heating means of coal gas baking oven, the baking oven device is to be divided into electronic type baking oven device and mechanical type baking oven device haply according to its control system.
In electronic type coal gas baking oven, for cooking food, possess the magnetic valve that is used for controlling the coal gas stream, and, also possess other controller and program in order to control baking oven.
As shown in Figure 1, the control device that uses during cooking food in the coal gas baking oven of prior art comprises: the igniter 30 that is used for lighting the baking oven burner; Be used for the flame test section 20 of flame detection, promptly under the effect of igniter, light the flame of baking oven burner; Be used for the temperature detecting part 10 of detected temperatures, promptly under the effect of lighting of baking oven burner, detect heated cooking room temperature inside; Be used for opening or closing first magnetic valve 40 and second magnetic valve 50 of the coal gas stream of baking oven burner; Control part 60, the user is for cooking food, and input cook temperature and cooking time, it is loaded accordingly with the programme-control of setting, and, in order to keep the cooking room temperature inside, control second magnetic valve 50 repeatedly.
First magnetic valve 40 is used for the stream of safe cut-out coal gas and is provided with, and promptly finishes gastronomical process or takes place and cut off the coal gas stream under the situation of mistake, to guarantee safety; Second magnetic valve 50 is in order to keep the cooking room temperature inside.
In gastronomical process, first magnetic valve 40 is in the state of opening always, therefore, has only and opens/close the switching that the coal gas stream is being controlled down in effect repeatedly by second magnetic valve 50.
Below, the control method of using when describing cooking food in the coal gas baking oven of prior art in detail:
As shown in Figure 2, the user at first imports cook temperature and the cooking time that is used for cooking food, import the action command (S10) of cooking food then, first magnetic valve 40 that is used for safety cut-off begins to start (S11) with second magnetic valve 50 that is used for the ignition combustion device, and magnetic valve is used among the figure " S/ " expression.
After first magnetic valve 40 and second magnetic valve 50 started, the coal gas stream was under the state that is opened, and initial igniter 30 is lighted baking oven burner (S12).
Detect the flame status of baking oven burner by flame detecting device 20, at this moment, under the opened state of igniter 30, the continuous flame that detects more than 2 times less than the baking oven burner, close first magnetic valve 40 and cut off the stream of coal gas, that is, directly cut off the source of coal gas, and the sound or show that various information in time are notified to user (S20～S23) to error message of giving a warning.
If can detect the flame in the baking oven burner, close igniter 30 (S30), periodically verify temperature, by the cooking room temperature inside that under the flame interaction of burner, increases, judge whether the cooking room internal temperature reaches the cook temperature of user's input, i.e. design temperature above (S40).
Through judgement (S40) afterwards, if temperature rises to more than the design temperature, close second magnetic valve 50 and extinguish after the baking oven burner, periodically verify cooking room temperature inside (S41).
If the cooking room temperature inside is reduced to below the design temperature, and, cooking time of setting also through the user, open once more second magnetic valve 50 firing point firearm 30 (S43, S11).And then, open second magnetic valve 50 firing point firearm 30 afterwards.
As shown in Figure 3, in the cooking time that the user sets, carry out following process repeatedly: the temperature of cooking room rises to more than the design temperature, closes second magnetic valve 50; The temperature of cooking room is reduced to below the design temperature, opens second magnetic valve 50 once more.
In the cooking time that the user sets, for the cooking room temperature inside is maintained to design temperature, ON/OFF second magnetic valve 50 repeatedly, and, in the time of opening second magnetic valve 50, necessary firing point firearm 30.
Surpass the cooking time, close the stream that first magnetic valve 40 and second magnetic valve 50 cut off coal gas, finish whole gastronomical process (S50, S60).
In sum, the coal gas baking oven of prior art is in order to keep baking oven cooking room temperature inside, controls the open and-shut mode of coal gas stream by the method for ON/OFF second magnetic valve 50 repeatedly.That is, extinguish after the baking oven device for igniting,, must start repeatedly and put high-tension igniter 30 in order to light once more, therefore, in order to carry out gastronomical process once, the firing point firearm many times of having to.And, in the process of carrying out the cooking, under the startup many times of igniter 30, produced discharge noise repeatedly, increased the discontented of consumer.And, in order to keep the cooking room temperature inside, must carry out the igniting/extinguishing process of baking oven burner repeatedly, along with cooking room internal temperature also rising/decline repeatedly, can not control to temperature the uniform state of linearity as shown in Figure 3.
Summary of the invention
Technical problem to be solved by this invention is, the control device that uses when cooking food in a kind of coal gas baking oven is provided with and control method, reduce consumer's discontented to cooking food, control the internal temperature of baking oven, improve the cooking status of the food in the baking oven more with linear method.
For the technical solution problem, the technical solution used in the present invention is: the control device that uses during cooking food in a kind of coal gas baking oven comprises the igniter that is used for lighting the baking oven burner; Under the effect of igniter, light the flame test section of flame detection of the flame of baking oven burner; Under the effect of lighting of baking oven burner, detect the temperature detecting part of heated cooking room internal temperature; Be used for opening or closing the magnetic valve of the coal gas stream of baking oven burner; The linear valve of the flow by solenoid control coal gas; In the process of cooking food, reach the cook temperature of having set in order to keep the cooking room temperature inside, control linear valve according to detected internal temperature in the temperature-detecting device, control flow into the control part of the gas flow of baking oven burner inside.
Described linear valve forms the N utmost point and the S utmost point of iron core in the mode of unusual excitation, and under the control action of control part, changes the polarity of inner iron core, regulates the flow of coal gas.
The control method of using during cooking food in a kind of coal gas baking oven, described coal gas baking oven comprise having possessed the temperature-detecting device that detects baking oven cooking room internal temperature; Detect the flame detecting device of flame in the baking oven burner; Light the igniter of baking oven burner, comprise the following control stage:
A, user's order that input begins to cook to baking oven are opened the magnetic valve that is used for opening and closing the coal gas stream, and under the control action of linear valve, are regulated the stage of gas flow to greatest extent;
B, the stage of under the effect of igniter, lighting the baking oven burner;
C, by temperature-detecting device, periodically read the stage of cooking indoor temperature;
D, for the cooking room internal temperature being maintained to the cook temperature of setting, under the control action of linear valve,, regulate the stage of gas flow according to detected cooking room temperature.
The stage of lighting the baking oven burner by igniter is by constituting with the next stage:
A, the gas flow of linear valve is set at the stage of opening igniter after the maximum;
B, detect the stage that whether flame exists in the baking oven burner by flame detecting device;
C, when detecting the flame of baking oven burner inside, close the stage of igniter;
D, when detecting, close the stage of magnetic valve less than the flame in the baking oven burner.
The invention has the beneficial effects as follows: have only to have produced the discharge noise that in the igniter discharge process, causes when lighting a fire in the early stage, reduced the discontented of consumer.Control the internal temperature of baking oven with linear method, improved the cooking status of food in the baking oven more, improved the reliability of product.
Description of drawings
Fig. 1 is the structure chart of the control device that uses during cooking food in the coal gas baking oven of prior art.
Fig. 2 is the flow chart of the control method used during cooking food in the coal gas baking oven of prior art.
Fig. 3 is that the baking oven cooking room temperature inside of prior art changes coordinate diagram.
Fig. 4 is the structure chart of the control device that uses during cooking food in the coal gas baking oven of the present invention.
Fig. 5 a is the schematic diagram of linear valve of the present invention.
Fig. 5 b is the control circuit figure of linear valve of the present invention.
Fig. 6 is the flow chart of the control method used during cooking food in the coal gas baking oven of the present invention.
Fig. 7 is that baking oven cooking room temperature inside of the present invention changes coordinate diagram.
Among the figure, 100: temperature-detecting device; 200: flame detecting device; 300: igniter; 400: magnetic valve; 500: linear valve; 600: control part.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
As shown in Figure 4, in coal gas baking oven of the present invention, the control device that uses during cooking food is by constituting with lower member: the igniter 300 that is used for lighting the baking oven burner; Be used for the flame test section 200 of flame detection, by under the effect of igniter 300, lighting the flame of baking oven burner; Be used for the temperature detecting part 100 of detected temperatures, promptly under the effect of lighting of baking oven burner, detect heated cooking room temperature inside; Be used for opening or closing the magnetic valve 400 of the coal gas stream of baking oven burner; Be used for controlling the linear valve 500 of the flow of coal gas, i.e. the flow of the coal gas of supplying with by magnetic valve 400; Control part 600, in the process of cooking food, reach the cook temperature of having set in order to keep the cooking room temperature inside, according to detected temperature, be that detected internal temperature is controlled linear valve 500 in the temperature-detecting device 100, control flow into the gas flow of baking oven burner inside.
Wherein, temperature-detecting device 10 utilizes thermal resistor, and the characteristics of thermal resistor are with its inner resistance of cooking room internal temperature conversion; Flame detecting device 100 utilizes the thermocouple connector, and the characteristics of thermocouple connector are to have or not according to the flame in the burner to produce electric spark.
Magnetic valve 400 is to be used for the stream of safe cut-out coal gas, promptly finishes gastronomical process or coal gas takes place to cut off under the situation of mistake to flow into and guarantee safety; The flow that linear valve 500 is used for controlling coal gas is provided with, and promptly in the process of cooking food, controls the flow that flow into the coal gas in the baking oven burner with the internal temperature of cooking room.
Shown in Fig. 5 a, linear valve 500 is the N utmost point and the S utmost points that form iron core in the mode of unusual excitation, and wherein, the N utmost point and the S utmost point are the inside that is installed in iron core in advance.
Linear valve 500 is under the control action of control part 600, changes the polarity of inner iron core, utilizes this principle to regulate the flow of coal gas among the present invention.
Shown in Fig. 5 b, the two ends of each inner iron core of linear valve 500 are to be connected in transistor Q1, Q2, and Q3, in the colelctor electrode of Q4, transistor Q1, Q2, Q3, the base stage of Q4 is the output port P1 that is connected in the control part 600 of by-pass valve control signal, P2, P3, P4.
Be transistor Q1, Q2, Q3, Q4 are under the valve control signal effect of control part 600, by the ON/OFF of selectivity, at this moment, linear valve 500 is at transistor Q1, Q2, Q3, therefore the polarity of its inner iron core of ON/OFF action down conversion of Q4, can regulate the flow of coal gas.
In gastronomical process, the polarity of the iron core of conversion linear valve 500 inside is regulated the flow of coal gas, promptly flow into the gas flow of baking oven burner inside, therefore, can regulate the temperature in the gastronomical process.
Below, the control method of using when describe in detail adopting cooking food in the baking oven of the present invention of linear valve 500:
As shown in Figure 6, the user sets the cook temperature of baking oven and after the cooking time, and the input of judging startup command is (S100) whether.
The user imports startup command for cooking food, at first open the supply process of magnetic valve 400 beginning coal gas, and the flow set of coal gas is maximum (S200) under the control action of linear valve 500.
Under the situation of supplying with maximum coal gas, open igniter 300 and light baking oven burner (S300).
Utilize flame detecting device 200 to judge whether the baking oven burner is lighted, judge that promptly the flame of baking oven burner has or not (S400).
Under the opened state of igniter 300, the above flame that detects less than the baking oven burner of certain number of times (for example 2 times), close first magnetic valve 400 and cut off the stream of coal gas, promptly directly cut off the source of coal gas, and sound or show that various information come error message in time is notified to user (S410～S430) gives a warning.
If can detect the flame in the baking oven burner, close igniter 300 (S500).
Also have, under the effect of the flame that produces in baking oven burner inside, the cooking room temperature inside just rises; At this time, periodically detect cooking room temperature inside (S600) by temperature-detecting device 100.
In order to allow the cooking room temperature inside keep the cook temperature of setting, control the flow (S700) that linear valve 500 conversion flow into the coal gas of baking oven burner inside with detected cooking room temperature inside in the said process.
The verification cooking room temperature inside that continues is come the flow of conversion coal gas with the cooking room temperature inside, therefore, as shown in Figure 7, the cooking room temperature inside is being kept the cook temperature of setting.
Surpass the cooking time that the user sets in advance, close the stream that magnetic valve 400 and linear valve 500 cut off coal gas, finish whole gastronomical process (S800, S900).
Used linear valve 500 among the present invention, promptly controlled the flow of coal gas, rather than use the ON/OFF control method of valve at the economize on coal linear valve 500 of throughput of the control signal of control part 600 downward modulation, therefore, can linear regulation cooking room temperature inside.
In sum, interest field of the present invention should be that the basis makes an explanation with the claim scope.In the claim scope, possess the personnel of this professional ABC, can carry out a variety of variations.
Claims (4)
1, the control device that uses during cooking food in a kind of coal gas baking oven is characterized in that comprising the igniter (300) that is used for lighting the baking oven burner; Under the effect of igniter, light the flame test section (200) of flame detection of the flame of baking oven burner; Under the effect of lighting of baking oven burner, detect the temperature detecting part (100) of heated cooking room internal temperature; Be used for opening or closing the magnetic valve (400) of the coal gas stream of baking oven burner; The linear valve (500) of the flow by solenoid control coal gas; In the process of cooking food, reach the cook temperature of having set in order to keep the cooking room temperature inside, control linear valve according to detected internal temperature in the temperature-detecting device, control flow into the control part (600) of the gas flow of baking oven burner inside.
2, the control device that uses during cooking food in the coal gas baking oven according to claim 1, it is characterized in that described linear valve (500) is the N utmost point and the S utmost point that forms iron core in the mode of unusual excitation, and under the control action of control part (600), change the polarity of inner iron core, regulate the flow of coal gas.
3, the control method of using during cooking food in a kind of coal gas baking oven, described coal gas baking oven comprise having possessed the temperature-detecting device that detects baking oven cooking room internal temperature; Detect the flame detecting device of flame in the baking oven burner; Light the igniter of baking oven burner, it is characterized in that also comprising the following control stage:
A, user's order that input begins to cook to baking oven are opened the magnetic valve that is used for opening and closing the coal gas stream, and under the control action of linear valve, are regulated the stage of gas flow to greatest extent;
B, the stage of under the effect of igniter, lighting the baking oven burner;
C, by temperature-detecting device, periodically read the stage of cooking indoor temperature;
D, for the cooking room internal temperature being maintained to the cook temperature of setting, under the control action of linear valve,, regulate the stage of gas flow according to detected cooking room temperature.
4, the control method of using during cooking food in the coal gas baking oven according to claim 3, the stage that it is characterized in that lighting by igniter the baking oven burner is by constituting with the next stage:
A, the gas flow of linear valve is set at the stage of opening igniter after the maximum;
B, detect the stage that whether flame exists in the baking oven burner by flame detecting device;
C, when detecting the flame of baking oven burner inside, close the stage of igniter;
D, when detecting, close the stage of magnetic valve less than the flame in the baking oven burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410019547 CN1711849A (en) | 2004-06-14 | 2004-06-14 | Controller and controlling method for cooking food on gas oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410019547 CN1711849A (en) | 2004-06-14 | 2004-06-14 | Controller and controlling method for cooking food on gas oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1711849A true CN1711849A (en) | 2005-12-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410019547 Pending CN1711849A (en) | 2004-06-14 | 2004-06-14 | Controller and controlling method for cooking food on gas oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1711849A (en) |
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2004
- 2004-06-14 CN CN 200410019547 patent/CN1711849A/en active Pending
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