CN208273289U - Heating device, the electromagnetic oven of electromagnetic oven - Google Patents
Heating device, the electromagnetic oven of electromagnetic oven Download PDFInfo
- Publication number
- CN208273289U CN208273289U CN201820963558.3U CN201820963558U CN208273289U CN 208273289 U CN208273289 U CN 208273289U CN 201820963558 U CN201820963558 U CN 201820963558U CN 208273289 U CN208273289 U CN 208273289U
- Authority
- CN
- China
- Prior art keywords
- contact point
- terminal
- electromagnetic oven
- temperature
- heating device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Electric Stoves And Ranges (AREA)
Abstract
The utility model discloses a kind of heating device of electromagnetic oven, electromagnetic oven, the heating device includes: coil panel, and coil panel has first terminal and Second terminal；Mainboard, mainboard have the first contact point and the second contact point being connected with first terminal and Second terminal；The temperature detector placed close to first contact point or the second contact point；Heater circuit on mainboard is set, and heater circuit is connected with coil panel and temperature detector respectively, and the temperature that heater circuit is detected according to temperature detector controls the heating power of coil panel.The device is by placing temperature detector close to first contact point or the second contact point, the temperature of coil disc terminal can be monitored in real time, and the heating power of coil panel is controlled in terminal overtemperature, it control effectively so as to the temperature to terminal, on fire, the burning plate phenomenon due to caused by terminal high temperature is avoided, and then the safety of electromagnetic oven work can be improved.
Description
Technical field
The utility model relates to electromagnetic heating technique field, in particular to a kind of heating device of electromagnetic oven, electromagnetic oven.
Background technique
Currently, electromagnetic heater, such as electromagnetic oven, for cost consideration, the enameled wire of general coil panel is aluminum steel, paint
Envelope curve and terminal are linked together by cold-press process.Due to coil panel line be multiply enameled wire, cold pressing connection procedure in or
Machine assembly or drum in transit, often having a small amount of enameled wire cannot connect well, at this time coil panel sensibility reciprocal become
Change little, it is not easy to detected.It being will cause when high-power in this way, the number of share of stock for the line that identical electric current flows through is reduced, thus
It will cause drum easily to generate heat, connect and be easy high temperature (thermally conductive to cause) at the terminal of aluminum steel, or even will appear on fire, burning plate phenomenon,
Cause safety accident.
Utility model content
The utility model is intended to solve one of the technical problem in above-mentioned technology at least to a certain extent.For this purpose, this reality
It is to propose a kind of heating device of electromagnetic oven with first novel purpose, which passes through close to first contact point or
Temperature detector is placed in two contact points, can monitor the temperature of coil disc terminal in real time, and in terminal overtemperature to coil panel
Heating power is controlled, and is control effectively so as to the temperature to terminal, avoid due to caused by terminal high temperature it is on fire,
Plate phenomenon is burnt, and then the safety of electromagnetic oven work can be improved.
Second purpose of the utility model is to propose a kind of electromagnetic oven.
In order to achieve the above objectives, on the one hand the utility model proposes the heating device of a kind of electromagnetic oven, comprising: coil
Disk, the coil panel have first terminal and Second terminal；Mainboard, the mainboard have and the first terminal and Second terminal
Connected first contact point and the second contact point；The temperature detector placed close to the first contact point or the second contact point；
Heater circuit on the mainboard is set, the heater circuit respectively with the coil panel and the temperature detector phase
Even, the temperature that the heater circuit is detected according to the temperature detector controls the heating power of the coil panel.
The heating device of electromagnetic oven according to the present utility model, temperature detector are positioned towards first contact point or second
Contact point, the temperature that heater circuit is detected according to temperature detector controls the heating power of coil panel, so as to right
The temperature of terminal control effectively, and avoids on fire, the burning plate phenomenon due to caused by terminal high temperature, and then electromagnetic oven can be improved
The safety of work.
In addition, can also have following additional technology according to the heating device of the utility model electromagnetic oven set forth above
Feature:
Specifically, the temperature detector includes: thermistor；Filter circuit, the filter circuit and temperature-sensitive electricity
Resistance is connected with the heater circuit.
Further, the temperature detector is in the preset range centered on the first contact point or the second contact point
Interior placement.
Further, the preset range is 5-25mm.
Specifically, the heater circuit includes: rectifier bridge, and the first end of the rectifier bridge is connected with power supply；Inductance, it is described
The first end of inductance is connected with the second end of the rectifier bridge, and the second end of the inductance is connected with the first contact point；It is humorous
Shake capacitor, and the resonant capacitance is in parallel with the coil panel；Switching tube, the first end of the switching tube and second contact point
It is connected, the second end ground connection of the switching tube；The driving circuit being connected with the control terminal of the switching tube；Chip is controlled, it is described
Control chip is connected with the driving circuit.
Further, the heater circuit further include: voltage sampling circuit, the voltage sampling circuit and the rectifier bridge
It is connected, the voltage sampling circuit carries out voltage sample to the input voltage of the rectifier bridge.
Specifically, the control chip, the temperature for being also used to detect in the temperature detector are greater than the first preset threshold
When, reduce heating power.
Specifically, the control chip, the temperature for being also used to detect in the temperature detector are greater than the second preset threshold
When, stop heating, wherein second preset threshold is greater than first preset threshold.
In order to achieve the above objectives, the utility model second aspect embodiment proposes a kind of electromagnetic oven comprising above-mentioned
The heating device of electromagnetic oven.
The electromagnetic oven of the utility model embodiment, by the heating device of above-mentioned electromagnetic oven, temperature detector is placed on
Close to first contact point or the second contact point, the heating power of temperature that heater circuit is detected according to temperature detector to coil panel
It is controlled, is control effectively so as to the temperature to terminal, on fire, the burning plate due to caused by terminal high temperature is avoided to show
As, and then the safety of electromagnetic oven work can be improved.
Detailed description of the invention
The utility model is above-mentioned and/or additional aspect and advantage from the following description of the accompanying drawings of embodiments will
Become obvious and be readily appreciated that, wherein
Fig. 1 is the circuit topology figure according to the heating device of the electromagnetic oven of the utility model one embodiment；
Fig. 2 is the structural schematic diagram according to the heating device of the electromagnetic oven of the utility model one embodiment；
Fig. 3 is the circuit topology figure according to the temperature detector of the utility model one embodiment；
Fig. 4 is the process according to the method for heating and controlling of the heating device of the kind electromagnetic oven of the utility model one embodiment
Figure.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to explain the utility model, and should not be understood as to the utility model
Limitation.
The electromagnetic heating system and electricity for electric cooking device of the utility model embodiment described with reference to the accompanying drawing
Cooking equipment.
Fig. 1 is the circuit topology figure according to the heating device of the electromagnetic oven of the utility model one embodiment.Such as Fig. 1 institute
Show, which includes: coil panel L1, mainboard 10, temperature detector 20, heater circuit.
Wherein, coil panel L1 has first terminal and Second terminal, and mainboard 10 has and first terminal and Second terminal phase
First contact point A and the second contact point B even.The temperature detector 20 placed close to first contact point A or the second contact point B
(in Fig. 1 close to for the A of first contact point).Heater circuit be arranged on mainboard 10, heater circuit respectively with coil panel and temperature
It spends detector 20 to be connected, heater circuit controls the heating power of coil panel L1 according to the temperature that temperature detector 20 detects
System.
Further, as shown in Fig. 2, temperature detector 20 can be centered on first contact point A or the second contact point B
Preset range in place.Preset range can be 5-25mm.
Specifically, the structure of heating device can refer to shown in Fig. 2, and temperature detector 20 can be set with first contact point
A or the second contact point B is the center of circle, using R1 as radius in the range of, R1 can be 5-25mm, preferably 10mm, and temperature detection
Device is not electrically connected with first contact point A or the second contact point B.Temperature detector 20 can be with real-time detection first contact point
The temperature of A or the second contact point B, heater circuit 20 can be according to heating of the temperature that temperature detector 20 detects to coil panel L1
Power is controlled, for example, can control heating power reduction if temperature is higher；If temperature is excessively high, it can control and add
Thermal stops heating work.The device is being by placing temperature detector close to first contact point or the second contact point as a result,
The temperature of coil disc terminal can be monitored in real time, and the heating power of coil panel is controlled in terminal overtemperature, so as to
It is control effectively with the temperature to terminal, avoids on fire, the burning plate phenomenon due to caused by terminal high temperature, and then electricity can be improved
The safety that magnetic furnaceman makees.
One embodiment according to the present utility model, as shown in Figure 1, heater circuit may include: rectifier bridge D1, inductance
L2, resonant capacitance C1, switching tube Q1, driving circuit 301, control chip IC.
Wherein, the first end of rectifier bridge D1 is connected with power supply AC.The second end phase of the first end of inductance L2 and rectifier bridge D1
Even, the second end of inductance L2 is connected with first contact point A.Resonant capacitance C1 is in parallel with coil panel L1.The first end of switching tube Q1
It is connected with the second contact point B, the second end ground connection of switching tube Q1.Driving circuit 301 is connected with the control terminal of switching tube Q1.Control
Chip IC is connected with driving circuit 302.
Specifically, as shown in Figure 1, heater circuit can also include, filter capacitor C2, protective tube F1, the one of rectifier bridge D1
A input terminal is connected to the firewire L of power supply by protective tube F1, and another input terminal of rectifier bridge D1 is connected to the zero curve of power supply
An output end of N, rectifier bridge D1 are connected to resonant element (coil panel L1 and resonant capacitance C1), another output by L2
Ground connection, provides resonant energy so that AC rectification is supplied electricity to resonant element as pulsating direct current by D1.L2 can be effectively inhibited altogether
Mould interference signal (thunderous electrical interference).Filter capacitor C2, to be filtered to Rectified alternating current.
The magnetic field that alternation can be generated when coil panel L1 work, when being placed in above L1 if there is a magnetic conductive metal face,
Metal covering will induced current at this time.Because there is resistance on metal covering, the electric current of induction will make metal covering generate thermal energy,
To be heated to food.Switching tube can (Insulated Gate Bipolar Transistor, insulated gate be double for IGBT
Bipolar transistor), control chip IC can issue PPG (Programme Pulse Generator, PPG programme pulse generator) control
PPG control pulse is converted IGBT driving arteries and veins by pulse (voltage magnitude is about 5V) processed to driving circuit 301, driving circuit 301
It rushes (voltage magnitude is about 18V), to drive the conducting of IGBT.Wherein, PPG control arteries and veins pulse width by control chip IC according to
The target power of electromagnetic heating system controls.In the case of normal output, in resonance potential zero crossing, control chip IC is issued
PPG pulse signal, so that IGBT is connected, the pulse width that control chip IC can control arteries and veins by changing PPG changes coil panel
The heating power of L1.
One embodiment according to the present utility model, as shown in Figure 1, above-mentioned heater circuit can also include: that voltage is adopted
Sample circuit 302.Voltage sampling circuit 302 is connected with rectifier bridge D1, voltage sampling circuit 302 to the input voltage of rectifier bridge D1 into
Row voltage sample.
Specifically, voltage sampling circuit 302 can input voltage (supply voltage) to rectifier bridge carry out voltage sample, with
Control control chip IC to heating device according to sampled voltage.For example, control chip IC can be sentenced according to sampled voltage
Power-off source whether over-voltage, if it is, control heater stop work, lead to opening in heating device to avoid overtension
Close device failure.
One embodiment according to the present utility model, as shown in figure 3, temperature detector 20 may include: thermistor RT
With filter circuit 201.Filter circuit 201 is connected with thermistor RT and heater circuit.
Specifically, as shown in figure 3, thermistor RT can be PTC (Positive Temperature
Coefficient, posive temperature coefficient thermistor), the characteristic increased with resistivity with temperature raising.The control of heater circuit
Chip IC processed can be by obtaining the voltage of point D to obtain the voltage V at the both ends thermistor RTRT, and then temperature is obtained according to voltage
Degree.Filter circuit 201 may include third capacitor C3, resistance R1 and default power supply VCC, and specific connection type is referring to Fig. 3, herein
It repeats no more.Filter circuit 201 can be to the V of acquisitionRTIt is filtered.
One embodiment according to the present utility model controls chip, and the temperature for being also used to detect in temperature detector 20 is big
When the first preset threshold T1, heating power is reduced；When the temperature that temperature detector 20 detects is greater than the second preset threshold T2,
Stop heating, wherein the second preset threshold T2 is greater than the first preset threshold T1.
Specifically, the first preset threshold T1 and the second preset threshold T2 can be preset according to the actual situation, and first is pre-
If threshold value T1's may range from 90~120 DEG C, preferred value is 100 DEG C；The range of second preset value T2 can be with 100 DEG C~150
DEG C, preferred value is 120 DEG C, but need to guarantee that the second preset threshold T2 is greater than the first preset threshold T1.Controlling chip IC can basis
The temperature of temperature detector detection controls heating device.If it is default that the temperature that temperature detector 20 detects is greater than first
Threshold value T1, then heating power can be reduced by changing the width of PPG pulse signal by controlling chip IC, to reduce fever；If
The temperature that temperature detector 20 detects is greater than the second preset threshold T2, then controls chip IC and stop issuing PPG pulse signal, so that
Heater stop heating, and issue high temperature warning message.Thus, it is possible to monitor the temperature of coil disc terminal in real time, and holding
The heating power of coil panel is controlled when sub- overtemperature, is control effectively so as to the temperature to terminal, avoid due to
On fire caused by terminal high temperature, burning plate phenomenon, and then the safety of electromagnetic oven work can be improved.
In conclusion according to the heating device of the electromagnetic oven of the utility model embodiment, temperature detector is positioned towards
First contact point or the second contact point, the temperature that heater circuit is detected according to temperature detector carry out the heating power of coil panel
Control, control effectively so as to the temperature to terminal, avoids on fire, the burning plate phenomenon due to caused by terminal high temperature, into
And the safety of electromagnetic oven work can be improved.
In addition, the utility model also proposes a kind of electromagnetic oven comprising the heating device of above-mentioned electromagnetic oven.
The electromagnetic oven of the utility model embodiment, by the heating device of above-mentioned electromagnetic oven, temperature detector is placed on
Close to first contact point or the second contact point, the heating power of temperature that heater circuit is detected according to temperature detector to coil panel
It is controlled, is control effectively so as to the temperature to terminal, on fire, the burning plate due to caused by terminal high temperature is avoided to show
As, and then the safety of electromagnetic oven work can be improved.
Based on the heating device of above-mentioned electromagnetic oven, the embodiments of the present invention also propose a kind of heating dress of electromagnetic oven
The method for heating and controlling set.Fig. 4 is the computer heating control according to the heating device of the kind electromagnetic oven of the utility model one embodiment
The flow chart of method, as shown in figure 4, method includes the following steps:
S1 obtains the temperature of temperature detector detection.
S2 reduces heating power if the temperature of temperature detector detection is greater than the first preset threshold T1.
S3 stops heating if the temperature of temperature detector detection is greater than the second preset threshold T2.Wherein, second is default
Threshold value T2 is greater than the first preset threshold T1.
It is understood that the method for heating and controlling of the heating device of the electromagnetic oven of the utility model embodiment is based on upper
The heating device for the electromagnetic oven stated.For details undisclosed in embodiment of the method, Installation practice, the utility model can refer to
In repeat no more.
According to the method for heating and controlling of the heating device of the electromagnetic oven of the utility model embodiment, and can be to the temperature of terminal
Degree control effectively, and avoids on fire, the burning plate phenomenon due to caused by terminal high temperature, and then the peace of electromagnetic oven work can be improved
Quan Xing.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside",
The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is based on the figure
Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.
In addition, term " first ", " second " only to describe purpose, are not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (7)
1. a kind of heating device of electromagnetic oven characterized by comprising
Coil panel, the coil panel have first terminal and Second terminal；
Mainboard, the mainboard have the first contact point and the second contact point being connected with the first terminal and Second terminal；
The temperature detector placed close to the first contact point or the second contact point；
Heater circuit on the mainboard is set, the heater circuit respectively with the coil panel and the temperature detector
It is connected, the temperature that the heater circuit is detected according to the temperature detector controls the heating power of the coil panel.
2. the heating device of electromagnetic oven as described in claim 1, which is characterized in that the temperature detector includes:
Thermistor；
Filter circuit, the filter circuit are connected with the thermistor and the heater circuit.
3. the heating device of electromagnetic oven as described in claim 1, which is characterized in that the temperature detector is with described first
It is placed in preset range centered on contact point or the second contact point.
4. the heating device of electromagnetic oven as claimed in claim 3, which is characterized in that the preset range is 5-25mm.
5. the heating device of electromagnetic oven as described in claim 1, which is characterized in that the heater circuit includes:
The first end of rectifier bridge, the rectifier bridge is connected with power supply；
Inductance, the first end of the inductance are connected with the second end of the rectifier bridge, the second end of the inductance and described first
Contact point is connected；
Resonant capacitance, the resonant capacitance are in parallel with the coil panel；
Switching tube, the first end of the switching tube are connected with second contact point, the second end ground connection of the switching tube；
The driving circuit being connected with the control terminal of the switching tube；
Chip is controlled, the control chip is connected with the driving circuit.
6. the heating device of electromagnetic oven as claimed in claim 5, which is characterized in that the heater circuit further include:
Voltage sampling circuit, the voltage sampling circuit are connected with the rectifier bridge, and the voltage sampling circuit is to the rectification
The input voltage of bridge carries out voltage sample.
7. a kind of electromagnetic oven, which is characterized in that including heating device as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820963558.3U CN208273289U (en) | 2018-06-20 | 2018-06-20 | Heating device, the electromagnetic oven of electromagnetic oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820963558.3U CN208273289U (en) | 2018-06-20 | 2018-06-20 | Heating device, the electromagnetic oven of electromagnetic oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208273289U true CN208273289U (en) | 2018-12-21 |
Family
ID=64690052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820963558.3U Active CN208273289U (en) | 2018-06-20 | 2018-06-20 | Heating device, the electromagnetic oven of electromagnetic oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208273289U (en) |
-
2018
- 2018-06-20 CN CN201820963558.3U patent/CN208273289U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104770061B (en) | Induction heating cooking instrument | |
| CN105103652B (en) | An induction heating cooktop | |
| CN109100037B (en) | Applied to the cooking bottom temperature measurement method of electromagnetic oven, apparatus and system | |
| CN101462348B (en) | Electromagnetic heating system of injection mould machine | |
| EP3481147A1 (en) | Induction heating device and method for determining loaded-object on the induction heating device | |
| EP2642820A1 (en) | Induction heating cooker and method of controlling same | |
| US20170223780A1 (en) | Induction cooking apparatus | |
| CN107990995A (en) | A kind of method for measuring assessment vessel for electromagnetic cooker temperature | |
| CN107436198A (en) | Pot temperature detection system and method and induction cooker | |
| CN209562837U (en) | Electromagnetic heating system and its control circuit and electric cooking pot | |
| CN111385927B (en) | Electromagnetic heating appliance and control method and control device thereof | |
| JP2008119417A (en) | Induction heating rice cooker | |
| CN112839398B (en) | Electromagnetic heating device and dry burning detection method thereof | |
| CN208273289U (en) | Heating device, the electromagnetic oven of electromagnetic oven | |
| CN105230120B (en) | An induction heating cooktop | |
| CN109519983A (en) | Electromagnetism cooking system and its cookware recognition methods and cookware identification device | |
| CN103167656A (en) | Chip circuit for commercial induction cooker and commercial induction cooker | |
| CN103179711B (en) | Control system of commercial induction cooker | |
| EP3836754B1 (en) | Cooking apparatus | |
| CN109041312A (en) | Induction heating cooker | |
| CN110617505B (en) | Heating device of induction cooker, heating control method of heating device and induction cooker | |
| JP3907674B2 (en) | Induction heating device | |
| CN109699095A (en) | Electromagnetic heating apparatus and its method for heating and controlling and device | |
| CN209448919U (en) | Electromagnetic heating system and its current detection circuit and electric cooking pot | |
| CN111385929B (en) | Electromagnetic heating appliance and control method and device thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |