CN104329701A - Energy-saving controller of fuel gas cooking range - Google Patents
Energy-saving controller of fuel gas cooking range Download PDFInfo
- Publication number
- CN104329701A CN104329701A CN201410662837.2A CN201410662837A CN104329701A CN 104329701 A CN104329701 A CN 104329701A CN 201410662837 A CN201410662837 A CN 201410662837A CN 104329701 A CN104329701 A CN 104329701A
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- Prior art keywords
- energy
- frequency
- saving controller
- capacitance
- saving
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/12—Arrangement or mounting of control or safety devices
- F24C3/126—Arrangement or mounting of control or safety devices on ranges
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses an energy-saving controller of a fuel gas cooking range, and relates to the field of energy-saving control. The energy-saving controller of the fuel gas cooking range is characterized by comprising a sensor and a control circuit board, wherein the control circuit board is provided with a capacitance-frequency conversion circuit constructed by NE555 and a frequency-voltage transfer circuit constructed by LM2907. The energy-saving controller is simple and effective, is understandable in principle, can operate under severe conditions of high temperature, radiation, violet shaking and the like, can achieve non-contact-type measurement, is good in stability, and has a good energy-saving effect.
Description
Technical field
The present invention relates to Energy Saving Control field, particularly relate to a kind of gas stove energy-saving controller.
Background technology
Along with Chinese national economy high speed development, living standards of the people improve constantly, and catering industry has become a huge Gold Industry.In recent years along with the quickening of urbanization, industrial process, energy-output ratio sharply increases, and fuel price constantly rises, and catering industry operating cost certainly will be made to increase, and profit reduces, and affects food and beverage enterprise's economic benefit and the long-term competition of industry.Therefore many food and beverage enterprises all pay much attention to this work of energy-saving and emission-reduction.
Traditional food and drink Energy Saving Control have following some, they all also exist some shortcomings:
(1) electro-optical pickoff: generally install a photoelectric sensor in the oblique upper of cook, the state of the pot judged by electro-optical pickoff, this sensing mode is adopted to be subject to the impact of external environment condition, be easy to by extraneous interference, easy generation misoperation, the non-constant of measuring process reliability.
(2) mechanical pressure lever type: adopt this kind of mode, all can have a mechanical depression bar switch as last at cook's guidance panel, changed controlling depression bar switch up and down, carry out Controlling solenoid valve further by the leg of cook.This kind of mode adds labour intensity to one side cook, and on the other hand along with service time is elongated, depression bar switch is easy to malfunctioning, and secondary maintenance capacity is comparatively large, causes operating efficiency low.
Summary of the invention
In view of this, in order to solve the problem, for this reason, the present invention proposes a kind of gas stove energy-saving controller.
Technical problem to be solved by this invention realizes by the following technical solutions.
By the influence factor of the known capacitance of formula below
In formula:
The dielectric constant of medium between ε-pole plate;
The area that s-pole plate hides mutually;
Distance between d-two parallel plate electrode;
Capacitive displacement transducer take capacitor as sensing element, displacement is converted to the sensor of electric capacitance change.By capacity plate antenna principle, using pot as a pole plate of capacitor and ground connection, enclosing curved metal pole plate at the innermost insert one of pot and stove is linked in controller, two parallel metal sheets can form a capacitor, from above-mentioned formula, when distance when between change two parallel plate electrode, capacitance also can change thereupon, the namely change of the state of pot is converted into the change of capacitance, and electric capacitance change gets final product the break-make of Based Intelligent Control magnetic valve by follow-up energy-saving controller.
A kind of gas stove energy-saving controller, it is characterized in that comprising sensor and control circuit board, control circuit board is provided with the capacitance-frequency converter built by NE555 and the frequency to voltage converter built by LM2907.
Further, described capacitance-frequency converter is made up of ic 555 chip IC 1 and R1, R2, Cin; Its frequency to voltage converter is made up of integrated circuit LM2907 chip IC 2 and C1, R3, fout.
Further, described sensor is capacitive displacement transducer.
Further, the frequency of oscillation of described capacitance-frequency converter
.
Further, described frequency to voltage converter is output voltage
.
Advantage of the present invention and effect are:
The present invention is simply effective, and principle is understandable, can work, be easy to realize non-contact measurement, good stability, have good energy-saving effect under the mal-conditions such as high temperature, radiation and sharp pounding.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic diagram of a kind of gas stove energy-saving controller of the present invention.
Below in conjunction with drawings and the specific embodiments, a kind of gas stove energy-saving controller of the present invention is further described.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
As shown in Figure 1, the present invention includes sensor and control circuit board, control circuit board is provided with the capacitance-frequency converter built by NE555 and the frequency to voltage converter built by LM2907.
Capacitance-frequency converter is made up of ic 555 chip IC 1 and R1, R2, Cin; Its frequency of oscillation
.This oscillating circuit is a typical multi-resonant oscillating circuit, resistance R1 connects 4 of IC1,7 pin, resistance R2 connects 6 of IC1,7 pin, electric capacity Cin connects 2,5 pin of IC1, the signal that the pulse-triggered monostable flipflop that oscillator is exported by 3 pin produces is square-wave signal, and its frequency of oscillation is relevant with the capacitance of measured capacitance Cin.Its concrete measuring principle is as follows: the charge and discharge process of capacitance type sensor carries out (VCC refers to D.C. regulated power supply voltage) between 0.67VCC and 0.33VCC, when voltage between threshold end 6 and trigger end 2 is less than 1/3VCC, discharge end 7 is opened, power supply is measured capacitance Cin charging, when electric capacity both end voltage rises to 2/3VCC, discharge end 7 is connected, measured capacitance Cin discharges, when electric capacity both end voltage is reduced to 1/3VCC again, discharge end 7 reopens, measured capacitance Cin is charged again, so repeat above-mentioned charge and discharge process, just define pulse square wave.
Frequently pressure conversion transducer is that the frequency signal sent by capacitance type sensor converts voltage signal to.Its frequency to voltage converter is made up of integrated circuit LM2907 chip IC 2 and C1, R3, fout.Electric capacity C1 connects 4 pin and the 200 Europe resistance that 2 pin of IC2 and 3 pin of GND, electric capacity C2 connection IC2 and GND, resistance R3 connect IC2, and 5 pin of IC2 are by 10K resistance eutral grounding.When charge pump becomes DC voltage the frequency inverted come from input stage input, need external timing capacitor C1, output resistance R3 and integrating capacitor or filter capacitor C2, when the state that the first order exports changes, timing capacitor is by charge or discharge linearly between two magnitudes of voltage of Vcc/2 in voltage difference, in the half period of input frequency signal, charge variation amount in timing capacitor is that C1 × VCC/2(VCC refers to D.C. regulated power supply voltage), obtain output voltage after the filtered capacitance integral of filtered like this electric current:
, wherein K is gain constant, and representative value is 1.Timing capacitor C1 can be charge pump and provides internal compensation, and in order to obtain transformation result accurately, its value should be greater than 500pF, and too little capacitance can produce error current on R3, all the more so when cryogenic applications especially.Output current because of LM2907 pin 3 is inner fixing, and therefore V0/R3 value must be less than or equal to this fixed value.If R3 will affect too greatly the output impedance of pin 3, the linearity of frequency/voltage conversion also can be deteriorated.In figure: C1=1000 pF, R3=100 Ω, C2=0.47 μ F, VCC=12V.
The resonant frequency value that this controller will measure, by calculating corresponding capacitance, and be converted into the voltage signal be directly proportional to capacitance and export, to realize the Real-time Collection to capacitance, clutter is removed subsequently through suitable filter circuit, add the control that high-speed a/d change-over circuit and single chip machine controlling circuit can realize electric capacitance change, thus control the state change of energy-saving appliance executive component-magnetic valve further, realize intelligent control.In order to reduce the interference of external environment condition to measuring circuit, making measurement result more reliable and more stable, adding a metallic shield better effects if in measuring circuit outside.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (4)
1. a gas stove energy-saving controller is made up of sensor and control circuit board, control circuit board is provided with the capacitance-frequency converter built by NE555 and the frequency to voltage converter built by LM2907, it is characterized in that described capacitance-frequency converter is by ic 555 chip IC 1 and R1, R2, Cin form; Its frequency to voltage converter is made up of integrated circuit LM2907 chip IC 2 and C1, R3, fout.
2. a kind of gas stove energy-saving controller according to claim 1, is characterized in that described sensor is capacitive displacement transducer.
3. a kind of gas stove energy-saving controller according to claim 1, is characterized in that the frequency of oscillation of described capacitance-frequency converter
.
4. a kind of gas stove energy-saving controller according to claim 1, is characterized in that the output voltage of described frequency to voltage converter
.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410662837.2A CN104329701A (en) | 2014-11-20 | 2014-11-20 | Energy-saving controller of fuel gas cooking range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410662837.2A CN104329701A (en) | 2014-11-20 | 2014-11-20 | Energy-saving controller of fuel gas cooking range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104329701A true CN104329701A (en) | 2015-02-04 |
Family
ID=52404473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410662837.2A Pending CN104329701A (en) | 2014-11-20 | 2014-11-20 | Energy-saving controller of fuel gas cooking range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104329701A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073558A (en) * | 1991-10-17 | 1993-06-23 | 菲利浦光灯制造公司 | The personal care apparatus that comprises capacitive on/off switch |
| CN1103520A (en) * | 1993-07-01 | 1995-06-07 | 菲利浦电子有限公司 | Capacitive sensor circuit |
| CN2690767Y (en) * | 2003-09-18 | 2005-04-06 | 钟显力 | Gas burning range flame automatic controller |
| CN2921636Y (en) * | 2006-05-31 | 2007-07-11 | 王永海 | Blowing energy-saving environment protection range burner for large stove |
-
2014
- 2014-11-20 CN CN201410662837.2A patent/CN104329701A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073558A (en) * | 1991-10-17 | 1993-06-23 | 菲利浦光灯制造公司 | The personal care apparatus that comprises capacitive on/off switch |
| GB2258922B (en) * | 1991-10-17 | 1993-06-23 | ||
| CN1103520A (en) * | 1993-07-01 | 1995-06-07 | 菲利浦电子有限公司 | Capacitive sensor circuit |
| CN2690767Y (en) * | 2003-09-18 | 2005-04-06 | 钟显力 | Gas burning range flame automatic controller |
| CN2921636Y (en) * | 2006-05-31 | 2007-07-11 | 王永海 | Blowing energy-saving environment protection range burner for large stove |
Non-Patent Citations (2)
| Title |
|---|
| 管庶安: "《数字逻辑基础》", 31 August 2005, 中国水利水电出版社 * |
| 袁光明: "《新颖电子器件应用手册（续二）》", 31 December 1999, 电子科技大学出版社 * |
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Application publication date: 20150204 |
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