CN206137849U - Energy -conserving chafing dish device of exempting from to boil - Google Patents

Abstract

The utility model discloses an energy -conserving chafing dish device of exempting from to boil. Temperature sensor installs on the chafing dish lateral wall, temperature sensor is connected with the control assembly that exempts from to boil through the wire, the temperature sensor probe end stretches into in the interior liquid of its pot, exempt from to boil control assembly including installing at the inside signal amplification circuit of electromagnetism stove, the AD circuit of changeing, processing circuit and IGBT pipe drive circuit, temperature sensor's signal output part is in proper order through signal amplification circuit, the AD circuit of changeing, a signal processing circuit, heating coil with the electromagnetism stove behind the IGBT pipe drive circuit is connected, adopt processing circuit control IGBT drive circuit to adjust the heating power of electromagnetism stove. The utility model discloses can realize that the boiling point detects and the interior temperature control of pot, extravagant a large amount of heat and moisture has played the effect of energy -conserving water conservation when having avoided water continuously to boil, also makes things convenient for people to use.

Description

One kind is exempted to boil Energy-saving chafing dish device

Technical field

This utility model is related to one kind and exempts to boil Energy-saving chafing dish device, and Based Intelligent Control fire kettle temperature is less than but close boiling point.

Background technology

It is a kind of new boiling point detection technique that height surveys boiling technology.Due to chaffy dish complicated component, add using residing height above sea level Difference, causes chaffy dish boiling point to differ, and this technology can exactly detect boiling point, and other controls for after provide accurate benchmark.

At present, the chaffy dish of the power-adjustable used in people's daily life, such as electromagnetic oven, are by pan and coupled Heater composition.There is the control circuit for adjusting power inside heater.These control circuits generally have oscillating circuit, protect Protection circuit, pulsewidth regulating circuit, current detection circuit, voltage detecting circuit, temperature sensing circuit etc., people can pass through panel On button carry out the break-make of electricity original paper in control circuit, and then control the power of heating.When use, people are by subjectivity Feel to adjust the power of heating, so inconvenient, two, because adjusting not in time, can cause certain energy loss, Boil particularly evident during chaffy dish.In addition, during chaffy dish is boiled, in order to ensure that liquid boils food in high temperature to reach in pot Purpose, a higher heating power is usually used chaffy dish is maintained into fluidized state.With this understanding, the one of input power Part is used to maintain the radiating of high-temp liquid and pot, another part to vaporize water into, and forms boiling phenomenon.But the boiling of chaffy dish soup Point is substantially stationary, and Part II acting can not improve temperature and efficiency.For this purpose, annual China about slatterns 230.0 hundred million Degree electric energy and the billion cubic meter of the lost water yield 0.23, waste very big.

Utility model content

In order to overcome existing chaffy dish without automatically adjusting power functions or adjust shortcoming not in time, and when boiling chaffy dish Electric energy caused by soup stock constantly boiling, the problem that fresh water is wasted, this utility model provides one kind and exempts to boil Energy-saving chafing dish device, not only Boiling point in chaffy dish can be detected, the power of heating is adjusted, the temperature control of soup for chafing dish is not made into it soup stock boiling point is closed on The temperature of boiling, also can automatic detection with dish process, power is adjusted after dish to maximum in chaffy dish.

This utility model solves the technical scheme that its technical problem adopted：

This utility model include being arranged on exempting from inside electromagnetic oven boil control assembly and with exempt to boil the temperature that is connected of control assembly Degree sensor, temperature sensor is arranged on the wall of chaffy dish side, and temperature sensor Jing wires are connected with boiling control assembly is exempted from, by temperature Degree sensor detects to kettle temperature, exempts to boil control assembly and first pass through height and survey to boil technology for detection boiling point, then by pot interior temperature Degree with chaffy dish boiling point multilevel iudge control electromagnetic oven heating source carry out Power Control, by chaffy dish internal temperature control boiling point with Lower but close boiling point, reach energy-saving and water-saving exempts from boiling.

Described temperature sensor probe end is extend in its pot in liquid through chaffy dish side wall.

Described boiling control assembly of exempting from includes being arranged on signal amplification circuit, A/D conversion circuits, the signal inside electromagnetic oven Process circuit and IGBT tube drive circuits, successively Jing signal amplification circuits, A/D conversions are electric for the signal output part of temperature sensor It is connected with the heating coil of electromagnetic oven after road, signal processing circuit, IGBT tube drive circuits, using signal processing circuit control IGBT drive circuit adjusts the heating power of electromagnetic oven.

Described IGBT drive circuit include audion Q1, audion Q2 and IGBT pipe Q3, the colelctor electrode of IGBT pipe Q3 with Signal processing circuit connects, and respectively Jing resistance R6 and diode ZD1 are connected to its base stage, IGBT pipe Q3 to the emitter stage of IGBT pipe Q3 Grounded emitter, the base stage Jing resistance R7 of IGBT pipe Q3 is connected to the colelctor electrode of audion Q1, the emitter stage Jing of audion Q1 It is connected with its base stage after electric capacity C11, the colelctor electrode of IGBT pipe Q3 is distinguished Jing after resistance R43, diode D5 with audion Q2's Emitter stage, colelctor electrode connection, the colelctor electrode of audion Q2 is grounded Jing after electric capacity C1, and audion Q2 meets supply voltage, audion Q1 Jing resistance R18 is followed by supply voltage after being connected with the base stage of audion Q2；Described signal processing circuit to IGBT pipes drive electricity Road input low level, IGBT pipes Q3 shut-offs；Input high level, IGBT pipes Q3 conductings.

Chaffy dish of the present utility model generally refers to the open boiler of the class of chaffy dish one.

The beneficial effects of the utility model are：

Part is simpler needed for this utility model, lower cost, realizes the regulation of chaffy dish power, reduces people and adjusts manually Energy consumption of the power number of times with regulation not in time.

Description of the drawings

Fig. 1 is that sectional view is installed in the side of this utility model temperature sensor.

Fig. 2 is this utility model electric control theory figure.

Fig. 3 is the schematic diagram of IGBT drive circuit.

In figure：1st, chaffy dish, 2, electromagnetic oven, 3, temperature sensor.

Specific embodiment

Below in conjunction with the accompanying drawings and specific embodiment is described in further detail to this utility model.

As shown in figure 1, this utility model include be arranged on electromagnetic oven 2 inside exempting from boil control assembly and with exempt from boiling control group The temperature sensor of part connection, temperature sensor 3 is arranged on the side wall of chaffy dish 1, and the sound end of temperature sensor 2 passes through chaffy dish side wall It extend in its pot in liquid, the Jing wires of temperature sensor 3 are connected with boiling control assembly is exempted from, by 3 pairs of pots of temperature sensor Temperature detection.

As shown in Fig. 2 exempt from boiling control assembly to include being arranged on signal amplification circuit, the A/D conversion electricity inside electromagnetic oven 3 Road, signal processing circuit and IGBT tube drive circuits, the signal output part of temperature sensor 2 Jing signal amplification circuits, A/D successively It is connected with the heating source circuit of electromagnetic oven 2 after conversion circuit, signal processing circuit, IGBT tube drive circuits.

The collection kettle temperature signal of temperature sensor 2 in pot, by temperature signal the signal of telecommunication is changed into, and Jing signals are put Big device amplifies, then Jing A/D reforming units are changed into digital signal, are sent to signal processing circuit, signal processing circuit and IGBT Tube drive circuit is connected, and by incoming kettle temperature information, automatic decision now state exports corresponding signal, controls IGBT The state of pipe, and then electromagnetic oven power is adjusted to predetermined value.

Fig. 3 is a kind of example of IGBT tube drive circuits, and IGBT drive circuit includes audion Q1, audion Q2 and IGBT The colelctor electrode of pipe Q3, IGBT pipe Q3 is connected with signal processing circuit, and the emitter stage of IGBT pipe Q3 distinguishes Jing resistance R6 and diode ZD1 is connected to its base stage, the grounded emitter of IGBT pipe Q3, and the base stage Jing resistance R7 of IGBT pipe Q3 is connected to the collection of audion Q1 Electrode, the emitter stage of audion Q1 is connected Jing after electric capacity C11 with its base stage, the colelctor electrode difference Jing resistance R43 of IGBT pipe Q3, It is connected with the emitter stage of audion Q2, colelctor electrode after diode D5, the colelctor electrode of audion Q2 is grounded Jing after electric capacity C1, audion Q2 connects supply voltage, and Jing resistance R18 are followed by supply voltage after audion Q1 is connected with the base stage of audion Q2；At described signal Reason circuit is to IGBT tube drive circuit input low levels, IGBT pipes Q3 shut-offs；Input high level, IGBT pipes Q3 conductings.

When input signal is high level, Q2 conductings, Q1 cut-offs, 18V D/C voltages circulation is provided to the colelctor electrode of IGBT Gate voltage, IGBT conductings.Electromagnetic oven wire coil starts energy storage.When input signal is low level, Q2 cut-offs, Q1 conductings, IGBT Grounded emitter, IGBT shut-off.Now drum induced voltage discharges humorous electric capacity, defines LC vibrations.

Resistance R6 quickly drags down the base stage residual voltage of IGBT when audion ends.Electric capacity C11 as high frequency by Road, additionally as the effect of gentle drive circuit waveform, Zener diode ZD1, the base voltage of stable IGBT, prevents input voltage When too high, IGBT is damaged.

Specific embodiment of the utility model and its implementation process are as follows：

In order to more accurately be controlled to temperature, passed as temperature using Pt100 thermal resistances in the present embodiment Sensor, its resistance value has clear and definite corresponding relation with temperature, and high precision, reaction is fast.Pt100 thermal resistances are directly placed in pot, Control circuit is connected to by 3 shielding lines, then the change of resistance is converted into by the signal of telecommunication by electric bridge, then amplified by instrument Device carries out signal condition, then is input into and is converted to Current Temperatures.

Claims (4)

1. one kind is exempted to boil Energy-saving chafing dish device, it is characterised in that：Including installed in electromagnetic oven (2) it is internal exempting from boil control assembly and With exempt to boil the temperature sensor that is connected of control assembly, temperature sensor (3) on the wall of chaffy dish (1) side, temperature sensor (3) Jing wires are connected with boiling control assembly is exempted from.

2. one kind according to claim 1 is exempted to boil Energy-saving chafing dish device, it is characterised in that：Described temperature sensor (3) Sound end is extend in its pot in liquid.

3. one kind according to claim 1 is exempted to boil Energy-saving chafing dish device, it is characterised in that：Described exempts from boiling control assembly bag Include installed in the internal signal amplification circuit of electromagnetic oven (2), A/D conversion circuits, signal processing circuit and IGBT tube drive circuits, Successively Jing signal amplification circuits, A/D conversion circuits, signal processing circuit, IGBT pipes drive the signal output part of temperature sensor (3) The heating coil connection of galvanic electricity Lu Houyu electromagnetic ovens (2), using signal processing circuit control IGBT drive circuit electromagnetic oven is adjusted (2) heating power.

4. one kind according to claim 3 is exempted to boil Energy-saving chafing dish device, it is characterised in that：Described IGBT drive circuit bag Audion Q1, audion Q2 and IGBT pipe Q3 are included, the colelctor electrode of IGBT pipe Q3 is connected with signal processing circuit, IGBT pipe Q3's sends out Respectively Jing resistance R6 and diode ZD1 are connected to its base stage, the grounded emitter of IGBT pipe Q3, base stage Jing of IGBT pipe Q3 to emitter-base bandgap grading Resistance R7 is connected to the colelctor electrode of audion Q1, and the emitter stage of audion Q1 is connected Jing after electric capacity C11 with its base stage, IGBT pipe Q3 Colelctor electrode be connected respectively through the emitter stage after resistance R43, diode D5 with audion Q2, colelctor electrode, audion Q2's Colelctor electrode is grounded Jing after electric capacity C1, and audion Q2 connects supply voltage, audion Q1 be connected with the base stage of audion Q2 after Jing resistance R18 is followed by supply voltage；Described signal processing circuit is to IGBT tube drive circuit input low levels, IGBT pipes Q3 shut-offs；It is defeated Enter high level, IGBT pipes Q3 conductings.