CN106322447B - Combustion type cooking system with automatic fire power calibrating function - Google Patents
Combustion type cooking system with automatic fire power calibrating function Download PDFInfo
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Abstract
The present invention provides a kind of combustion type cooking systems with automatic fire power calibrating function comprising gas regulating device and gas-operated thermal bath facility.Wherein, the combustion type cooking system further include: gaseous-pressure detection unit, for measuring gaseous-pressure and exporting gaseous-pressure detection signal；Environmental parameter detection unit, for measuring environment temperature and atmospheric pressure and output environment temperature detection signal and atmospheric pressure detection signal；Control processor, for receiving gaseous-pressure detection signal, environment temperature detection signal and atmospheric pressure detection signal, and measured environment temperature and atmospheric pressure are handled to obtain target gaseous-pressure, and gas pressure force control signal is exported to gas regulating device based on measured gaseous-pressure and target gaseous-pressure.The present invention can obtain identical or roughly the same firepower under various working environments, realize stable fire output, and cook out the dish of stay in grade and other cook food.
Description
Technical field
The present invention relates to cooking appliance fields；More particularly, it relates to which a kind of have automatic fire power calibrating function
Combustion type cooking system.
Background technique
The cooking is that the Cooking Materials Jing Guo various processing and sorting is heated and seasoned, be made into color, smell, taste, shape,
The process of all good dish of nutrition.The type of dish is complicated, cooking method be also it is multifarious, especially for Chinese meal
For, cooking method is especially various, such as fried, fried, cooked, fried, leavened, quick-fried, stir-frying, steaming, burns, boils, etc..For each dish
And its for cooking method, the grasp of the duration and degree of heating is all one of key factor.For example, frying, being quick-fried, the skill and technique such as cooking, fry, to be mostly used very hot oven fast
At the skill and technique such as burning, stew, boiling, boiling in a covered pot over a slow fire and being mostly used small fire long-time cooking.The so-called grasp duration and degree of heating is exactly according to cooking method, vegetable feature
And edible different specific requirements, it adjusts, the intensity of fire of control heating and time, raw-food material is cooked to meeting edible want
It asks and reaches defined quality standard.
The firepower of heat source, the temperature of heat transfer medium and heating time are three main elements for constituting the duration and degree of heating, wherein firepower
Can by measured using the thermic load of cooker.For gas combustion cooking utensil, thermic load refers to that combustion gas is fired in cooker
The heat discharged in the unit time when burning.It cooks, in a standardized way in particular by semi- or fully automated cooking system
When being cooked, if the setting or adjusting of thermic load or firepower have error, it is enough to influence dish quality when the error amount reaches
Degree when, technological parameter relevant with the duration and degree of heating must just carry out it is corresponding correct or adjust, otherwise can be incorrect because of the duration and degree of heating
And influence the quality and its consistency of dish.The present inventor's studies have shown that between practical firepower and the standard firepower of setting
Deviation when being more than 2%, bigger adverse effect will be caused to the quality of the sensitive dish of part dish especially firepower.
For cooking system automatically or semi-automatically, temperature, the cooked of heat transfer medium can be theoretically measured
The various reaction duration and degree of heating states such as temperature parameters, and then the intensity of fire and the duration and degree of heating of cooking system are controlled.In for example,
State patent CN03154580.1 discloses the adjustable firepower cooker and its cooking system of a kind of belt sensor, the adjustable firepower
Cooker includes the sensor that at least one is used to measure duration and degree of heating state, is used to detect the heat transfer medium including cooking-vessel
And/or the physical quantity and/or chemical quantity and/or its variable quantity of cooked, and measured data transmission is handled to control
Device, so that control processor dynamically judges and control to cook the duration and degree of heating in time.
In gastronomical process, since cooked makees a variety of causes such as irregular movement, heat transfer medium in cooking-vessel
Diabatic process between cooked is complicated and irregular, logical positioned at the heat transfer medium of different zones and the temperature of cooked
It is often not identical.But above existing cooking system only measures the part of heat transfer medium and cooked, due to this
Kind of obtained data of local measurement are difficult representative, thus these measurement data can not accurately reflect that firepower is strong
Degree and the real conditions for cooking the duration and degree of heating, the duration and degree of heating control carried out according to these measurement data are certainly namely inaccurate.
In addition, Chinese patent CN200910107623.8 discloses a kind of duration and degree of heating control of cooking system based on machine vision
System processed cooperates the primary processor of cooking device and fire power regulator to use, which includes motion module, figure
As image-forming module, thermal infrared sensor module, vision processing module and communication module, image image-forming module receives the life of primary processor
It enables or information sends visual processes for image information by communication module after carrying out image sampling to the dish cooked
Module, vision processing module handle image information in real time, obtain the location information of representative heat object, according to the position
Information, motion module drive thermal infrared sensor module to carry out temperature sampling to representative heat object, and should by communication module
Temperature information is sent to the primary processor or fire power regulator of cooking device.
Representative temperature measuring data and realization pair can be obtained in above-mentioned this duration and degree of heating control system theory
The duration and degree of heating is cooked to accurately control, but its not only structure is complicated, but also for certain cooking crafts, especially for pan-fried, fried, stir-fry,
For the cooking crafts such as quick-fried, leavened, since cooked is generally in the state of a kind of " smoke fire burns " at this time, thus oil smoke can be right
Dish image acquired in image image-forming module forms interference, causes actually to be difficult to be accurately obtained correct representative heat
Object, the duration and degree of heating control carried out according to these incorrect measurement data are certainly namely inaccurate.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of combustion type cooking system, which is cooked
Adjusting system can carry out automatic Calibration to its firepower according to the variation of working environment, to realize steady under different operating environment
Determine firepower output, accurately to be controlled to cooking the duration and degree of heating, and cooks out the dish of stay in grade and other cook food.
In order to achieve the above-mentioned object of the invention, the present invention provides a kind of, and the combustion type with automatic fire power calibrating function is cooked
System comprising gas regulating device and gas-operated thermal bath facility, the gas regulating device are at least used for regulating gas heating device
In gaseous-pressure.Wherein, the combustion type cooking system further include: gaseous-pressure detection unit, for measuring in fuel gas flow
Gaseous-pressure on direction in the gas pipeline in gas regulating device downstream, and generated based on measured gaseous-pressure
Gaseous-pressure detects signal；Environmental parameter detection unit, for measuring environment temperature and atmospheric pressure, and based on measured
Environment temperature and atmospheric pressure difference build environment temperature detection signal and atmospheric pressure detection signal；Control processor is used for
Gaseous-pressure detection signal, environment temperature detection signal and atmospheric pressure detection signal are received, and to measured environment temperature
Degree and atmospheric pressure are handled to obtain target gaseous-pressure, and based on measured gaseous-pressure and target gas pressure
Power exports gas pressure force control signal to gas regulating device.
In combustion type cooking system of the invention, the variables such as thermic load and environment temperature, atmospheric pressure, gaseous-pressure it
Between with following varying function relationship (referring to Chinese " household gas utensils " national standard):
In formula:
ΦIt is real- actual measurement thermic load, kW；
Q1- 0 DEG C, the low heat value of combustion gas, MJ/m are tested under 101.3kPa state3；
V-actual measurement gas flow, m3/h；
tgFuel gas temperature in-gas meter, DEG C；
PambAtmospheric pressure when-test, kPa；
PmCombustion gas in-actual measurement gas meter is with respect to static pressure, kPa；
S-temperature is tgWhen saturation vapor pressure, kPa (when using dry type flowmeter measure when, S value should be multiplied by examination
The relative humidity for testing combustion gas is modified).
The actual measurement reduced heat input of gas-operated thermal bath facility is calculated by following formula (2):
In formula:
Φ-actual measurement reduced heat input, unit are kilowatt (kW)；
Q1- 0 DEG C, the low heat value of gas is designed under 101.3kPa state, unit is megajoule every cubic metre of (MJ/m3)；
V-actual measurement gas flow, unit are cube per hour (m3/h)；
daThe relative density of dry test gas under-standard state；
dmgThe relative density of design gas is done under-standard state；
pambAtmospheric pressure when-test, unit are kPa (kPa)；
psThe specified gas supply pressure used when-design, unit are kPa (kPa)；
PmWith respect to static pressure, unit is kPa (kPa) for combustion gas in-actual measurement gas meter；
tgFuel gas temperature in-actual measurement gas meter, unit are degree Celsius (DEG C)；
S-temperature is tgWhen saturation vapor pressure, unit be kPa (kPa) (when using dry type flowmeter measure when,
S value should be modified multiplied by the relative humidity of test combustion gas)；
The relative density of 0.622-vapor perfect gas.
By being deduced to above-mentioned formula, when a gas-operated thermal bath facility is in gas component, gaseous-pressure and gas valve aperture
In the case where constant, fuel gas temperature and atmospheric pressure change are to the influence relationship of gas flow and thermic load respectively by following public affairs
Formula (3) and (4) are represented:
In formula:
v1And v2- gas flow when being state 1 and state 2 respectively, m3/h；
T1And T2- fuel gas temperature when being state 1 and state 2 respectively, K；
Pamb1And Pamb2- atmospheric pressure when being state 1 and state 2 respectively, kPa；
s1And s2- it is the corresponding saturation vapor pressure of the fuel gas temperature corresponding with when state 2 of state 1, kPa respectively.
In formula:
Φ1And Φ2- thermic load when being state 1 and state 2 respectively；
T1And T2- fuel gas temperature when being state 1 and state 2 respectively, K；
pamb1And pamb2- atmospheric pressure when being state 1 and state 2 respectively, kPa；
s1And s2- it is the corresponding saturation vapor pressure of the fuel gas temperature corresponding with when state 2 of state 1, kPa respectively.
Further accordance with hydrodynamics, Bernoulli equation can obtain following formula (5):
In formula:
P is gas pressure；
ρ is gas density；
V is gas flow rate；
C is Bernoulli constant.
In conjunction with above formula (3) to (5), following formula (6) can be obtained:
In formula:
P1And P2Pressure when-combustion gas output when being state 1 and state 2 respectively, kPa；
T1And T2- the fuel gas temperature (K) when being state 1 and state 2 respectively, since combustion gas is usually by pipeline or bottled side
Formula supply, therefore fuel gas temperature is only approximately environment temperature；
pamb1And pamb2- atmospheric pressure when being state 1 and state 2 respectively, kPa；
s1And s2- it is the corresponding saturation vapor pressure of the fuel gas temperature corresponding with when state 2 of state 1, kPa respectively；
C1And C2- be respectively the combustion gas corresponding with when state 2 of state 1 Bernoulli constant.
By above formula (4) it is found that working as fuel gas temperature T (being approximately environment temperature), atmospheric pressure PambAnd saturated steam
When any one of pressure changes, the thermic load of gas-operated thermal bath facility will change.For example, working as locating for cooking system
Geographical location difference when, output firepower difference may occur due to the difference of atmospheric pressure and environment temperature；And
And even for having for the cooking system for determining position, working environment may also be because of climate change and/or other reasons
And change, for example, environment temperature may be than environment when bringing into operation after cooking system operation certain time
Temperature wants high, this is because cooking system can discharge the reason of heat to ambient enviroment in the process of running.
Therefore, to guarantee that thermic load output is constant, gaseous-pressure P should just change.If environment temperature T2, atmospheric pressure
Power Pamb2And gaseous-pressure P2For given value under a certain state, and it can measure environment temperature degree T under another state1, atmospheric pressure
Power Pamb1, while the adjusted coefficient K that reaction other factors such as combustion gas Wobbe index influence is introduced, it can be released by formula (6):
In formula, p1' it should be the gas pressure force value after adjusting.
C in formula (7)1And C2When value is 0, following formula (8) can be obtained:
Combustion type cooking system of the invention, especially semi- or fully automated combustion type cooking system, use are standardized
Cooking program is cooked, wherein the intensity of fire (firepower gear) of established standards and heating time in cooking program, with
It obtains quality qualified and stable dish and other cooks food.Therefore, to combustion type cooking system of the invention, especially half
Automatic or automatic gas formula cooking system, carries out initial firepower calibration, so that each firepower gear under initial alignment environment
With standardized intensity of fire, and obtain gaseous-pressure corresponding with each firepower gear under the initial alignment environment.That is, to this
The combustion type cooking system of invention, for especially semi- or fully automated combustion type cooking system, under initial alignment environment
Environment temperature T2, atmospheric pressure Pamb2, gaseous-pressure P corresponding with each thermic load2And saturation vapor pressure s2It is determining
's.Therefore, combustion type cooking system of the invention is according to environment temperature T measured under current operating environment1And atmospheric pressure
Power Pamb1And the saturation vapor pressure s under current operating environment1, based on relationship represented by above-mentioned formula (8)
Automatically determining will obtain required for the thermic load equal or of substantially equal with the thermic load of initial alignment under current operating environment
Target gaseous-pressure, and can be according to the comparison result between target gaseous-pressure and measured gaseous-pressure, to combustion
Atmospheric pressure is carried out automatically controlling or is adjusted, to realize the stabilization firepower output under different operating environment.
Combustion type cooking system of the invention can both carry out initial firepower calibration before factory under initial alignment environment,
Initial firepower calibration can also using be carried out under initial alignment environment.Used combustion gas and work when initial alignment
When used combustion gas Wobbe index having the same when, the value of adjusted coefficient K can be 1.For example, since each department are used
The Wobbe index of combustion gas is usually identical, and therefore, when using carrying out the calibration of initial firepower, the value of adjusted coefficient K can
Think 1.
A specific embodiment according to the present invention, control processor include processing unit and storage unit, storage unit
In be stored with and indicate the environment temperature of corresponding relationship, atmospheric pressure-mesh between environment temperature, atmospheric pressure and target gaseous-pressure
Gaseous-pressure relation table is marked, processing unit inquires the relation table based on measured environment temperature and atmospheric pressure to obtain
Target gaseous-pressure.
In this specific embodiment, various working environments can be founded in laboratory, and will be in each environment temperature and big
Measured combustion gas when the actual measurement thermic load of cooking system is equal or of substantially equal with the thermic load of initial alignment under atmospheric pressure
Pressure is as target gaseous-pressure, to obtain environment temperature, atmospheric pressure-target gaseous-pressure relation table；Or it can be by
Or base equal with the thermic load of initial alignment will be obtained at each specific environment temperature and atmospheric pressure by determining according to above-mentioned formula (8)
Target gaseous-pressure required for this equal thermic load, to obtain environment temperature, atmospheric pressure-target gaseous-pressure relationship
Table.Wherein, environment temperature, atmospheric pressure-target gaseous-pressure relation table can run corresponding program by combustion type cooking system
And obtain, it can also be input from the outside.
Another specific embodiment according to the present invention, control processor is with according to measured environment temperature and greatly
Atmospheric pressure determines the algorithm of target gaseous-pressure, and obtains target gaseous-pressure according to the algorithm.
Another specific embodiment according to the present invention, control processor are also used to carry out measured environment temperature
Processing to obtain saturation vapor pressure, and to saturation vapor pressure and measured environment temperature and atmospheric pressure into
Row processing is to obtain target gaseous-pressure.
In the present invention, control processor can be satisfied by the relation table of inquiry environment temperature and saturation vapor pressure
And water vapour pressure, it can also be according to the empirical equation of saturation vapor pressure and environment temperature relationship to measured environment
Temperature carries out calculation process to obtain saturation vapor pressure.
Another specific embodiment according to the present invention, combustion type cooking system further comprise that gas flow rate detection is single
Member is used to measure the gas flow rate in gas pipeline, and is transmitted and fired to control processor based on measured gas flow rate
Gas velocity detects signal；Control processor is also used to handle to be fired measured gas flow rate and gaseous-pressure
The Bernoulli constant of gas, and Bernoulli constant and measured environment temperature to combustion gas and atmospheric pressure handled with
Target gaseous-pressure after being corrected, and based on the target gaseous-pressure after measured gaseous-pressure and correction to combustion
Gas control device exports gas pressure force control signal.
In the present invention, by carrying out assessment twice or more than twice to gas flow rate and gaseous-pressure, and according to above-mentioned
Formula (5), so that it may obtain the Bernoulli constant C of combustion gas under corresponding state.
In the present invention, the target gaseous-pressure after correction can be obtained by following formula (9):
In formula:
p1" be correction after target gaseous-pressure；
K is correction factor；
P2For the gaseous-pressure under initial alignment environment；
T1And T2It is the environment temperature under measured environment temperature and initial alignment environment respectively；
Pamb1And Pamb2It is the atmospheric pressure under measured atmospheric pressure and initial alignment environment respectively；
s1And s2It is the saturation vapor pressure under current operating environment and initial alignment environment respectively；
C1And C2It is the Bernoulli constant of combustion gas in gas pipeline under current operating environment and initial alignment environment respectively.
By above technical scheme as it can be seen that by being corrected to target gaseous-pressure, combustion type cooking system of the invention
More accurate control and adjusting can be carried out to its intensity of fire.Also, the Bai Nu of combustion gas when in view of cooking system work
Sharp constant C can generate dynamic change, be also possible to dynamically to carry out to the correction of target gaseous-pressure.
Another specific embodiment according to the present invention, combustion type cooking system further comprise that gas flow detection is single
Member is used to measure the gas flow in gas pipeline, and is transmitted and fired to control processor based on measured gas flow
Throughput detects signal；Control processor is also used to obtain target gas flow according to conversion formula or table, and is based on being surveyed
The gas flow and the target gas flow measured control signal to gas regulating device output gas flow.Wherein, combustion gas
Flow can directly measure to obtain, and can also be converted to gas flow and indirect by measuring gas flow rate, and by gas flow rate
Measurement obtains.
In the above-mentioned technical solutions, control processor can obtain each building ring by the following conversion formula of operation (10)
The thermic load of combustion type cooking system and the required target combustion gas of when equal or of substantially equal thermic load of initial alignment under border
Flow:
In formula:
Φ-initial alignment thermic load, kW；
Q1- 0 DEG C, under 101.3kPa state combustion gas low heat value, MJ/m3；
V-target gas flow, m3/h；
tgMeasured environment temperature under-current operating environment, DEG C；
PambMeasured atmospheric pressure, kPa under-current operating environment；
PmCombustion gas in-actual measurement gas meter is with respect to static pressure, kPa；
S-temperature is tgWhen saturation vapor pressure, kPa (when using dry type flowmeter measure when, S value should be multiplied by combustion
The relative humidity of gas is modified).
Alternatively, can be previously obtained according to above-mentioned formula (10) indicates that combustion gas is with respect to static pressure, ring under each intensity of fire
The converting form of corresponding relationship between border temperature and atmospheric pressure and target gas flow, control processor is by inquiring the conversion
Table obtains target gas flow.
Carrying out control to intensity of fire by regulating gas pressure has the advantages that fireballing, this is particularly suitable for combustion gas
The requirement that formula cooking system quickly adjusts intensity of fire.And intensity of fire is controlled by adjustment of combustion gas flow
With the control higher advantage of precision, but it requires longer regulating time.In the above-mentioned technical solutions, while using adjusting it fires
Atmospheric pressure and gas flow control intensity of fire, have that adjustment speed is fast, significant advantage with high accuracy.
Another specific embodiment according to the present invention, environmental parameter detection unit include environment temperature detection unit and big
Atmospheric pressure detection unit, environment temperature detection unit are used to measure environment temperature and generate ring based on measured environment temperature
Border temperature detection signal, atmospheric pressure detection unit are used to measure atmospheric pressure and are generated based on measured atmospheric pressure big
Atmospheric pressure detects signal.
Another specific embodiment according to the present invention, environmental parameter detection unit include environment temperature and atmospheric pressure inspection
Unit is surveyed, is used to measure environment temperature and atmospheric pressure and is generated respectively based on measured environment temperature and atmospheric pressure
Environment temperature detects signal and atmospheric pressure detection signal.This allows for atmospheric pressure detection unit in measurement atmospheric pressure
When, need to measure environment temperature to automatically correct the static drift of wherein sensor；Also, with use environment temperature detection simultaneously
Unit is compared with atmospheric pressure detection unit, and the cost of use environment temperature and atmospheric pressure detection unit is lower.
Another specific embodiment according to the present invention, gas regulating device include with motor and/or electric signal and/or its
Its driving device directly and/or indirectly drives to carry out the gas control valve that multistage and/or stepless continuous is adjusted.
Another specific embodiment according to the present invention, between environmental parameter detection unit and control processor, gas pressure
It can be by wired or wireless between power detection unit and control processor, between control processor and gas regulating device
Mode carries out signal transmission.
Another specific embodiment according to the present invention, gaseous-pressure detection unit include pressure sensor, such as differential pressure
Formula sensor, the pressure sensor are arranged on the gas pipeline between gas regulating device and gas nozzle.Another can
The mode of implementation is that coal gas detection is arranged on the gas pipeline and bypasses, and pressure sensor setting is in coal gas detection bypass.
Another specific embodiment according to the present invention, combustion type cooking system are the cooking of automatically or semi-automatically combustion type
System.
Combustion type cooking system of the invention can be according to the variation of its working environment and dynamic and automatically calibration are fiery
Power intensity, to export the thermic load identical or roughly the same with initial alignment numerical value under various working environments, to realize
Firepower stablizes output.Therefore, the accurate control to the cooking duration and degree of heating may be implemented in combustion type cooking system of the invention, and cooks
The dish of stay in grade and other cook food out.
In order to more clearly illustrate the objectives, technical solutions, and advantages of the present invention, with reference to the accompanying drawing and specific embodiment party
The present invention is described in further detail for formula.In each attached drawing, identical appended drawing reference is had the same meaning.
Detailed description of the invention
Fig. 1 is the structural block diagram of combustion type cooking system embodiment 1 of the present invention；
Fig. 2 is the automatic fire power demarcation flow figure of combustion type cooking system embodiment 1 of the present invention；
Fig. 3 is the intensity of fire according to the target gaseous-pressure after correction to combustion type cooking system embodiment 1 of the present invention
Corrected flow chart；
Fig. 4 is corrected according to intensity of fire of the target gas flow to combustion type cooking system embodiment 1 of the present invention
Flow chart；
Fig. 5 is the structural block diagram of combustion type cooking system embodiment 2 of the present invention；
Fig. 6 is the automatic fire power demarcation flow figure of combustion type cooking system embodiment 2 of the present invention.
Specific embodiment
Embodiment 1
Fig. 1 is the structural block diagram for the combustion type cooking system embodiment 1 that the present invention has automatic fire power calibrating function.Its
In, 1 indicates gaseous-pressure detection unit, and 2 indicate atmospheric pressure detection unit, and 3 indicate environment temperature detection unit, and 4 indicate control
Processor processed, 41 expression storage units, 42 expression processing units, 5 expression gas regulating devices, 6 expression gas-operated thermal bath facilities, 7
Indicate gas pipeline, 8 indicate gas meter, and 9 indicate gas flow rate detection unit.
Gaseous-pressure detection unit 1 includes gaseous-pressure sensor and gaseous-pressure detection and conversion circuit, atmospheric pressure
Detection unit 2 includes barometric pressure sensor and atmospheric pressure detection and conversion circuit, and environment temperature detection unit 3 includes environment
Temperature sensor and environment temperature detection and conversion circuit, gas regulating device 5 include proportioning valve and valve activator, combustion gas stream
Fast detection unit 9 includes gas flow rate sensor and gas flow rate detection and conversion circuit.Wherein, environment temperature sensor and big
Air pressure force snesor is mounted on the outer housing of cooking system, is easy to be in contact with environment and avoid the interference of heat source as far as possible；Combustion
Air pressure force snesor is mounted on the gas pipeline between proportioning valve and the gas nozzle of gas-operated thermal bath facility；Gas flow rate sensing
Device is mounted on the gas pipeline between gas meter 8 and proportioning valve；Gaseous-pressure detection and conversion circuit, atmospheric pressure inspection
It surveys and conversion circuit, environment temperature detection and conversion circuit, gas flow rate detection and conversion circuit is integrated in control processor 4
In control circuit board.
As shown in Figure 1, gaseous-pressure detection unit 1 is in the gas pipeline between measurement scale valve and gas nozzle
Gaseous-pressure, and gaseous-pressure is generated based on measured gaseous-pressure and detects signal；Atmospheric pressure detection unit 2 is for surveying
Atmospheric pressure is measured, and atmospheric pressure detection signal is generated based on measured atmospheric pressure；Environment temperature detection unit 3 is used for
Environment temperature is measured, and based on measured environment temperature build environment temperature detection signal；Gas flow rate detection unit 9 is used
The gas flow rate in gas pipeline between measurement scale valve and gas meter 8, and based on measured gas flow rate
It generates gas flow rate and detects signal.Gaseous-pressure detects signal, atmospheric pressure detection signal, environment temperature detection signal and combustion gas
Flow rate detection signal is input and stored in storage unit 41；Meanwhile it being also stored in storage unit 41 under each thermic load of expression
The environment temperature of corresponding relationship, atmospheric pressure-target gaseous-pressure between environment temperature and atmospheric pressure and target gaseous-pressure
Relation table, the data such as environment temperature and saturation vapor pressure relation table and cooking program.It is single that processing unit 42 reads storage
Corresponding data in member 41 simultaneously exports gaseous-pressure and gas flow control signal to gas regulating device 5 as needed.
In the present embodiment, have shown in following formula (8) between target gaseous-pressure and environment temperature and atmospheric pressure
Functional relation:
In formula:
p1' it is target gaseous-pressure, kPa；
K is correction factor, for correcting influence of the other factors such as combustion gas Wobbe index to target gaseous-pressure；
P2For the gaseous-pressure under initial alignment environment, kPa；
T1And T2- it is environment temperature under predetermined work environment and initial alignment environment, K respectively；
Pamb1And Pamb2- it is atmospheric pressure under predetermined work environment and initial alignment environment, kPa respectively；
s1And s2- it is Saturated water vapor pressure corresponding with predetermined work environment temperature and initial alignment environment temperature respectively
Power, kPa.Saturation vapor pressure is obtained by inquiry environment temperature with saturation vapor pressure relation table.
For combustion type cooking system of the invention, initial alignment environment and corresponding with each initial alignment thermic load
Gaseous-pressure uniquely determine, can be calculated according to above formula (8) to be obtained under predetermined work environment with just
Target gaseous-pressure required for the equal or of substantially equal thermic load of the thermic load demarcated that begins, and then obtain indicating environment temperature
The environment temperature of corresponding relationship, atmospheric pressure-target gaseous-pressure relation table between atmospheric pressure and target gaseous-pressure.
Fig. 2 is the automatic fire power demarcation flow figure of the present embodiment combustion type cooking system.As shown in Fig. 2, firstly, initial
Demarcate under environment and initial firepower calibration carried out to cooking system, and determined in each specific environment temperature according to above formula (8) and
To reach target gaseous-pressure required for each intensity of fire of initial alignment under atmospheric pressure, to obtain environment temperature, big
Atmospheric pressure-target gaseous-pressure relation table is simultaneously stored to storage unit 41.Before the cooking or in gastronomical process, to cooking
Adjusting system carries out automatic fire power calibration to realize stable firepower output, for this purpose, atmospheric pressure detection unit 2 measures current atmospheric
Pressure, environment temperature detection unit 3 measure current environmental temperature, the current gas pressure that gaseous-pressure detection unit 1 measures；Control
The processor 4 processed atmospheric pressure determining and measured by inquiry environment temperature, atmospheric pressure-target gaseous-pressure relation table
Atmospheric pressure identical or immediate with environment temperature and environment temperature, so that corresponding target gaseous-pressure is obtained,
And the target gaseous-pressure is compared with the gaseous-pressure that gaseous-pressure detection unit 1 is surveyed, if comparison result does not have
Deviation, although have deviation, which does not have obvious or unacceptable shadow within the range of permission, to dish quality
It rings, then need not be adjusted, if comparison result has the deviation not allowed, export gas pressure force control signal to combustion gas tune
Regulating device 5；Gas regulating device 5 according to the aperture of the control signal adjust automatically proportioning valve, thus make gaseous-pressure reach or
Person is close to target gaseous-pressure.
Further, as shown in figure 3, control processor 4 automatic fire power calibration complete after also to target gaseous-pressure
Be corrected with the target gaseous-pressure after being corrected, and according to after correction target gaseous-pressure and gaseous-pressure detect it is single
The comparison result of the gaseous-pressure of 1 actual measurement of member, output gas pressure force control signal to gas regulating device 5；Gas regulating device 5
According to the aperture of the control signal adjust automatically proportioning valve, so that gaseous-pressure be made to reach or approach the target combustion gas after correction
Pressure.
Wherein, control processor 4 has corresponding software program or logical operation circuit, according to following formula (9)
Represented algorithm corrected after target gaseous-pressure:
In formula:
p1" be correction after target gaseous-pressure；
K is correction factor, for correcting influence of the other factors such as combustion gas Wobbe index to target gaseous-pressure；
P2For the gaseous-pressure under initial alignment environment；
T1And T2It is the environment temperature under measured environment temperature and initial alignment environment respectively；
Pamb1And Pamb2It is the atmospheric pressure under measured atmospheric pressure and initial alignment environment respectively；
s1And s2It is the saturation vapor pressure under current operating environment and initial alignment environment respectively；
C1And C2It is the Bernoulli constant of combustion gas in gas pipeline under current operating environment and initial alignment environment respectively,
It is obtained by control processor by handling measured gas flow rate and gaseous-pressure.
Meanwhile the combustion type cooking system of the present embodiment also controls its intensity of fire by adjustment of combustion gas flow
System, to realize that stablizing for firepower exports.Also, the adjusting of gas flow is usually to carry out after the adjusting of gaseous-pressure.
In order to realize the adjusting of gas flow, as shown in figure 4, firstly, control processor 4 obtains target gas flow, and to combustion gas stream
Gas flow rate measured by fast detection unit 9 (at this time also as gas flow detection unit) is handled to obtain practical combustion
Throughput；Then, control processor 4 exports gaseous-pressure according to the comparison result of target gas flow and practical gas flow
Signal is controlled to gas regulating device 5, gas regulating device 5 according to the aperture of the control signal adjust automatically proportioning valve, thus
Reach gas flow or close to target gas flow.
Wherein, control processor 4 has corresponding software program or logical operation circuit, according to following formula (10)
Represented algorithm and obtain target gas flow:
In formula:
Φ-initial alignment thermic load, kW；
Q1- 0 DEG C, under 101.3kPa state combustion gas low heat value, MJ/m3；
V-target gas flow, m3/h；
tgMeasured environment temperature under-current operating environment, DEG C；
PambMeasured atmospheric pressure, kPa under-current operating environment；
PmCombustion gas in-actual measurement gas meter is with respect to static pressure, kPa；
S-temperature is tgWhen saturation vapor pressure, kPa (when using dry type flowmeter measure when, S value should be multiplied by combustion
The relative humidity of gas is modified).
It is negative to the heat of the combustion type cooking system of the present embodiment under the various working environments different from initial alignment environment
Lotus is determined, the results showed that, the actual measurement thermic load of each firepower gear and the heat of initial alignment are negative under these working environments
Deviation between lotus is less than 0.02kW.
Embodiment 2
Fig. 5 is the structural block diagram for the combustion type cooking system embodiment 2 that the present invention has automatic fire power calibrating function.Its
In, 1 indicates gaseous-pressure detection unit, and 23 indicate environment temperature and atmospheric pressure detection unit, and 4 indicate control processor, 5 tables
Show gas regulating device, 6 indicate gas-operated thermal bath facility, and 7 indicate gas pipeline, and 8 indicate gas meter, and 9 indicate gas flow rate
Detection unit.
Gaseous-pressure detection unit 1 includes the gaseous-pressure sensor to become one and gaseous-pressure detection and conversion electricity
Road, environment temperature and atmospheric pressure detection unit 23 include the environment temperature to become one and barometric pressure sensor and phase
The detection answered and conversion circuit, environment temperature detection unit 3 include the environment temperature sensor to become one and environment temperature
Detection and conversion circuit, gas regulating device 5 include proportioning valve and valve activator, and gas flow rate detection unit 9 includes integrated
Gas flow rate sensor and the gas flow rate detection being integrated and conversion circuit.Wherein, environment temperature and atmospheric pressure detection list
Member 23 is mounted on the outer housing of cooking system；Gaseous-pressure detection unit 1 is mounted on the combustion of proportioning valve and gas-operated thermal bath facility
On gas pipeline 7 between gas jets；Gas flow rate sensor is mounted on the gas pipeline between gas meter 8 and proportioning valve
On；Gaseous-pressure detection unit 1, environment temperature and atmospheric pressure detection unit 23, gas regulating device 5 and gas flow rate detection
Unit 9 wirelessly carries out signal transmission with control processor 4 respectively.
As shown in figure 5, gaseous-pressure detection unit 1 is in the gas pipeline between measurement scale valve and gas nozzle
Gaseous-pressure, and gaseous-pressure is generated based on measured gaseous-pressure and detects signal；Environment temperature and atmospheric pressure detection
Unit 23 generates ring based on measured environment temperature and atmospheric pressure for measuring environment temperature and atmospheric pressure respectively
Border temperature detection signal and atmospheric pressure detection signal；Gas flow rate detection unit 9 is used for measurement scale valve and gas meter 8
Between gas pipeline in gas flow rate, and gas flow rate is generated based on measured gas flow rate and detects signal.Control
Processor 4 carries out calculation process to measured atmospheric pressure and environment temperature to obtain target gaseous-pressure, and according to need
Gaseous-pressure adjustment signal is exported to gas regulating device 5.
In the present embodiment, control processor 4 has corresponding software program or logical operation circuit, according to following public affairs
Algorithm represented by formula (8) determines target gaseous-pressure:
In formula:
p1' it is target gaseous-pressure, kPa；
K is correction factor, for correcting influence of the other factors such as combustion gas Wobbe index to target gaseous-pressure；
P2For the gaseous-pressure under initial alignment environment, kPa；
T1And T2- it is environment temperature under measured environment temperature and initial alignment environment, K respectively；
Pamb1And Pamb2- it is atmospheric pressure under measured atmospheric pressure and initial alignment environment, kPa respectively；
s1And s2- it is Saturated water vapor pressure corresponding with measured environment temperature and initial alignment environment temperature respectively
Power, kPa.Saturation vapor pressure is obtained by inquiry environment temperature with saturation vapor pressure relation table.
For combustion type cooking system of the invention, initial alignment environment and corresponding with each initial alignment thermic load
Gaseous-pressure uniquely determine, can be calculated according to above formula (8) to be obtained under current operating environment with just
Target gaseous-pressure required for the equal or of substantially equal thermic load of the thermic load demarcated that begins.
Fig. 6 is the automatic fire power demarcation flow figure of the present embodiment combustion type cooking system.As shown in fig. 6, firstly, initial
It demarcates under environment and initial firepower calibration is carried out to cooking system.Before the cooking or in gastronomical process, cooking system is carried out
Automatic fire power calibration is to realize stable firepower output, for this purpose, gaseous-pressure detection unit 1 measures current gas pressure, environment
Temperature and atmospheric pressure detection unit 23 measure current environmental temperature and atmospheric pressure；Control processor 4 passes through inquiry environment temperature
Degree and saturation vapor pressure relation table and obtain current saturation vapor pressure, and the fortune according to represented by above-mentioned formula (8)
Algorithm carries out calculation process to measured environment temperature and atmospheric pressure, obtains target combustion corresponding with current operating environment
Atmospheric pressure, and the target gaseous-pressure is compared with the gaseous-pressure that gaseous-pressure detection unit 1 is surveyed, if comparing knot
Fruit does not have deviation, although have deviation, which within the range of permission, then need not be adjusted, if compare knot
There is the deviation not allowed in fruit, then export gas pressure force control signal to gas regulating device 5；Gas regulating device 5 is according to this
The aperture of signal adjust automatically proportioning valve is controlled, so that gaseous-pressure be made to reach or close to target gaseous-pressure.
In the present embodiment, same as Example 1, also to target gaseous-pressure after automatic fire power calibration is completed
It is corrected with the target gaseous-pressure after being corrected, and according to the gaseous-pressure of the target gaseous-pressure after correction and actual measurement
Comparison result, gaseous-pressure is controlled or regulated.Also, same same as Example 1, the combustion gas of the present embodiment
Formula cooking system also controls its intensity of fire by adjustment of combustion gas flow, to realize that stablizing for firepower exports.
It is negative to the heat of the combustion type cooking system of the present embodiment under the various working environments different from initial alignment environment
Lotus is determined, the results showed that, the actual measurement thermic load of each firepower gear and the heat of initial alignment are negative under these working environments
Deviation between lotus is less than 0.02kW.
Comparative example
As a comparison case be a kind of combustion type cooking system without automatic fire power calibrating function, following table 1 and table 2
The combustion type cooking system is respectively illustrated under the two kind working environments different from initial alignment environment, the reality of each firepower gear
Calorimetric load and its deviation between initial alignment thermic load.
Table 1
Table 2
By the measured data of the above Tables 1 and 2 it is found that even if in the working environment being not much different with initial alignment environment
Under, the deviation between the actual measurement thermic load and initial alignment thermic load of the combustion type cooking system of comparative example is in most situations
Under can also be greater than 0.02kW, and survey the deviation between thermic load and initial alignment thermic load with working environment and initial alignment
The increase of gap between environment and increase, this can seriously affect dish and other qualities and its consistency for cooking food.With
This is opposite, and the present invention has the combustion type cooking system of automatic fire power calibrating function each firepower under both the above working environment
Deviation between the actual measurement thermic load of gear and the thermic load of initial alignment is respectively less than 0.02kW.
It should be noted that the various aspects of the above discribed embodiment can carry out mutual combination and/or replacement,
Unless between this combination and/or replacement, there are mutually exclusive situations.
Although depicting the present invention above by embodiment, but it is to be understood that, those of ordinary skill in the art are not
It is detached from invention scope of the invention, according to improving on an equal basis made by the present invention, the invention scope that should be of the invention is covered.
Claims (10)
1. a kind of combustion type cooking system with automatic fire power calibrating function comprising gas regulating device and gas heating dress
It sets, the gas regulating device is at least used to adjust the gaseous-pressure in the gas-operated thermal bath facility, wherein the combustion type is cooked
Adjusting system further include:
Gaseous-pressure detection unit, for measuring the fuel gas conduit for being located at the gas regulating device downstream on fuel gas flow direction
Gaseous-pressure in road, and gaseous-pressure is generated based on measured gaseous-pressure and detects signal；
Environmental parameter detection unit, for measuring environment temperature and atmospheric pressure, and based on measured environment temperature and greatly
Atmospheric pressure distinguishes build environment temperature detection signal and atmospheric pressure detection signal；
Control processor, for receiving the gaseous-pressure detection signal, environment temperature detection signal and the atmospheric pressure
Power detects signal, and is handled measured environment temperature and atmospheric pressure to obtain target gaseous-pressure, Yi Jiji
Gas pressure force control signal is exported to the gas regulating device in measured gaseous-pressure and the target gaseous-pressure.
2. combustion type cooking system as described in claim 1, wherein the control processor includes that processing unit and storage are single
Member is stored with environment temperature, atmospheric pressure-target gaseous-pressure relation table in the storage unit, and the processing unit is based on
Measured environment temperature and atmospheric pressure inquires the relation table to obtain the target gaseous-pressure.
3. combustion type cooking system as described in claim 1, wherein the control processor has according to measured ring
Border temperature and atmospheric pressure determine the algorithm of the target gaseous-pressure, and obtain the target according to the algorithm
Gaseous-pressure.
4. combustion type cooking system as described in claim 1, wherein the control processor is also used to measured ring
Border temperature is handled to obtain saturation vapor pressure, and to the saturation vapor pressure and measured environment temperature
Degree and atmospheric pressure are handled to obtain the target gaseous-pressure.
5. combustion type cooking system as described in claim 1 further comprises gas flow rate detection unit, the combustion gas
Flow rate detection unit is used to measure gas flow rate in gas pipeline, and based on measured gas flow rate at the control
It manages device transmission gas flow rate and detects signal；The control processor be also used to measured gas flow rate and gaseous-pressure into
Row is handled to obtain the Bernoulli constant of combustion gas, and to the Bernoulli constant and measured environment temperature and atmospheric pressure
Power is handled with the target gaseous-pressure after being corrected, and based on the target after measured gaseous-pressure and correction
Gaseous-pressure exports gas pressure force control signal to the gas regulating device.
6. combustion type cooking system as described in claim 1 further comprises gas flow detection unit, the combustion gas stream
Amount detection unit is used to measure the gas flow in gas pipeline, and is handled based on measured gas flow to the control
Device transmits gas flow and detects signal；The control processor is also used to obtain target combustion gas stream according to conversion formula or table
Amount, and gas flow control is exported to the gas regulating device based on measured gas flow and the target gas flow
Signal processed.
7. combustion type cooking system as described in claim 1, wherein the environmental parameter detection unit includes environment temperature inspection
Unit and atmospheric pressure detection unit are surveyed, the environment temperature detection unit is for measuring environment temperature and based on measured
Environment temperature build environment temperature detection signal, the atmospheric pressure detection unit is for measuring atmospheric pressure and based on measured
The atmospheric pressure arrived generates atmospheric pressure detection signal.
8. combustion type cooking system as described in claim 1, wherein the environmental parameter detection unit include environment temperature and
Atmospheric pressure detection unit is used to measure environment temperature and atmospheric pressure and based on measured environment temperature and atmospheric pressure
Power distinguishes build environment temperature detection signal and atmospheric pressure detection signal.
9. combustion type cooking system as described in claim 1, wherein the gaseous-pressure detection unit includes pressure sensing
Device, the pressure sensor are arranged on the gas pipeline between the gas regulating device and gas nozzle.
10. combustion type cooking system as described in claim 1, wherein the control processor is to measured environment temperature
Degree and atmospheric pressure are by following functional relation progress calculation process, with the determination target gaseous-pressure:
Wherein,
p1' it is target gaseous-pressure；
K is correction factor；
P2For the gaseous-pressure under initial alignment environment；
T1And T2It is the environment temperature under measured environment temperature and initial alignment environment respectively；
Pamb1And Pamb2It is the atmospheric pressure under measured atmospheric pressure and initial alignment environment respectively；
s1And s2It is the saturation vapor pressure under current operating environment and initial alignment environment respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510337049.0A CN106322447B (en) | 2015-06-17 | 2015-06-17 | Combustion type cooking system with automatic fire power calibrating function |
| PCT/CN2016/085596 WO2016202226A1 (en) | 2015-06-17 | 2016-06-13 | Gas type cooking system with automatic fire power calibration function |
| TW105119171A TWI614454B (en) | 2015-06-17 | 2016-06-17 | Automatic firepower calibration method for gas cooking system and gas cooking system with automatic firepower calibration function |
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| CN201510337049.0A CN106322447B (en) | 2015-06-17 | 2015-06-17 | Combustion type cooking system with automatic fire power calibrating function |
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| CN106322447B true CN106322447B (en) | 2019-11-05 |
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| CN110410828A (en) * | 2019-07-03 | 2019-11-05 | 华帝股份有限公司 | Device for determining heat load value of gas stove |
| CN110319463B (en) * | 2019-08-09 | 2024-03-19 | 中山市铧禧电子科技有限公司 | System and method for calculating heat load by using air |
| CN111043631A (en) * | 2019-12-27 | 2020-04-21 | 广州燃气集团有限公司 | Combustion control system, method and device of burner and storage medium |
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| CN1369667A (en) * | 2002-03-19 | 2002-09-18 | 黄德勇 | Gas firepower controller for cooking Chinese food |
| KR20130122265A (en) * | 2012-04-30 | 2013-11-07 | 린나이코리아 주식회사 | Apparatus and method for prevent overheating of cooking vessel by thermal conductivity |
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