CN202636677U - Electromagnetic heating cooker with high electromagnetic compatibility - Google Patents
Electromagnetic heating cooker with high electromagnetic compatibility Download PDFInfo
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- CN202636677U CN202636677U CN 201220126919 CN201220126919U CN202636677U CN 202636677 U CN202636677 U CN 202636677U CN 201220126919 CN201220126919 CN 201220126919 CN 201220126919 U CN201220126919 U CN 201220126919U CN 202636677 U CN202636677 U CN 202636677U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 83
- 239000002184 metal Substances 0.000 claims abstract description 32
- 230000005611 electricity Effects 0.000 claims description 19
- 235000007164 Oryza sativa Nutrition 0.000 abstract description 6
- 235000009566 rice Nutrition 0.000 abstract description 6
- 238000010411 cooking Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 4
- 230000006698 induction Effects 0.000 abstract description 2
- 240000007594 Oryza sativa Species 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 10
- 230000005855 radiation Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 241000209094 Oryza Species 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 235000005911 diet Nutrition 0.000 description 2
- 230000037213 diet Effects 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The utility model discloses an electromagnetic heating cooker with high electromagnetic compatibility, which relates to the technical field of kitchen cooking equipment and solves the problem in the prior art that electromagnetic interference with a power grid is large. The electromagnetic heating cooker with high electromagnetic compatibility comprises a cooker body, an inner pot, an electromagnetic wire coil and an electric control device, wherein a cavity for containing the inner pot is arranged in the cooker body; the electric control device comprises a master control panel and an operating panel, a strong and weak power insolating device is arranged between the operating panel and the master control panel, a signal detecting device is arranged in the cooker body, the signal detecting device penetrates through the electromagnetic wire coil and is connected with the operating panel by a weak power signal wire, the signal detecting device comprises a metal piece not provided with a grounding wire, and the metal piece can protrude into the cavity; and the rating heating power of the electromagnetic wire coil is 100W-3000W. The design scheme is mainly used for the electromagnetic heating cooker, such as an induction heating (IH) pressure cooker, an IH rice cooker, an electromagnetic heating stewpot and the like. The electromagnetic interference with the power grid can be lowered.
Description
Technical field
The utility model relates to the kitchen cooking equipment technical field, relates in particular to a kind of electromagnetic heating pot made with high electrical-magnetic compatibility.
Background technology
Development along with science and technology, electromagnetic heating technique is further used in kitchen cooking equipment, such as: Electromagnetic Heating rice cooker (IH rice cooker), electromagnetic heating pressure pot (IH pressure cooker), Electromagnetic Heating saucepan etc., all belong to the category of electromagnetic heating pot made.Owing to producing more magnetic field during Electromagnetic Heating, the circuit board that these magnetic fields can be by electromagnetic heating pot made inside, electronic devices and components, wire etc. conduct to the power supply of electromagnetic heating pot made, cause the electromagnetic interference to electrical network.
Realizing and using in the process of above-mentioned electromagnetic heating pot made, the inventor finds that there are the following problems at least in the prior art:
1, in the prior art electromagnetic heating pot made in order to shield the electromagnetic interference that electrical network is caused, except the design filter circuit, also need to twine the filtering ring at the power line of supply socket place, the filtering ring generally adopts magnet ring or electric capacity or inductance, these accessory costs of using as the filtering ring are higher, cause the cost of electromagnetic heating pot made higher.
2, adopt more excellent heating power of the general existence of Electromagnetic Heating, when adopting lower heating power to heat, need to be with IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) control electric current is forced to drag down, cause in the circuit signal frequency composition more, cause the electromagnetic interference of electrical network larger, so, electromagnetic heating pot made is larger to the electromagnetic interference of electrical network when adopting low-power to carry out the slow fire heating, is difficult to pass through Electromagnetic Interference Test.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art and a kind of electromagnetic heating pot made with high electrical-magnetic compatibility is provided, and reduces the electromagnetic interference to electrical network.
For achieving the above object, the utility model adopts following technical scheme:
A kind of electromagnetic heating pot made with high electrical-magnetic compatibility comprises a pot body, pot courage, electromagnetic wire coil and electric control gear, is provided with the inner chamber of placing the pot courage in the pot body; Described electric control gear comprises master control borad and controls plate, described controlling is provided with the strong and weak electricity isolating device between plate and the master control borad, be provided with signal supervisory instrument in the described pot body, signal supervisory instrument pass the electromagnetic wire coil setting and through the weak electric signal line with control plate and be connected, signal supervisory instrument comprises the metalwork without earth connection, and metalwork can protrude in inner chamber; The specified heating power of described electromagnetic wire coil is 100W～3000W.
Described strong and weak electricity isolating device is optocoupler or isolating transformer.
Described electromagnetic wire coil comprises magnetic stripe, and described weak electric signal line is arranged on the magnetic stripe outside and connects up along magnetic stripe.
Described signal supervisory instrument comprises temperature sensor and/or thermal cut-off.
Described inner chamber comprises metal inner surface, and metal inner surface passes through ground connection.
Described earth connection is fixed on the electromagnetic wire coil top.
Described master control borad is installed in a pot body top, and described earth connection passes between master control borad and pot body top, so that earth connection is fixed on the electromagnetic wire coil top.
Described electric control gear also comprises filter band, and described filter band is provided with electromagnetic interference filter circuit.
Described master control borad and filter band are wholely set.
Described pot body is provided with power input, and described master control borad is provided with the Electromagnetic Heating power circuit, and described Electromagnetic Heating power circuit is connected to power input by electromagnetic interference filter circuit.
Described master control borad, filter band and power input are arranged on the same side of pot body.
The inventor is by research, experiment discovery, and the important factor in order that electric network electromagnet is disturbed is earth connection, and earth connection is directly connected to electrical network, easily receives again the magnetic field radiation of electromagnetic wire coil, and the electromagnetic interference that conducts to electrical network is larger.
Behind the electromagnetic heating pot made with high electrical-magnetic compatibility that employing the utility model provides; owing to being provided with the strong and weak electricity isolating device between plate and the master control borad controlling; can prevent that by the strong and weak electricity isolating device electric current of forceful electric power on the master control borad from by controlling the light current circuit electric leakage on the plate, playing preferably safeguard protection effect.Controlling under the prerequisite that is provided with the strong and weak electricity isolating device between plate and the master control borad, through the weak electric signal line with control plate and be connected the situation that the forceful electric power electric leakage just can not appear in signal supervisory instrument, so, the utility model will protrude from the metalwork of the metalwork employing of inner chamber without earth connection in the signal supervisory instrument, saved direct signal supervisory instrument earth connection across electromagnetic wire coil, can significantly reduce electromagnetic heating pot made by the electromagnetic interference of earth connection to electrical network so that electromagnetic heating pot made can be better test by electromagnetic interference.
In addition, through checking, adopt after the utility model, if adopt lower power to heat, cause that the signal frequency composition increases in the circuit, its to the electromagnetic interference of electrical network still in safe range, thereby so that adopt the electromagnetic heating pot made of this programme can adopt low-power to carry out the slow fire culinary art, so that the cooking method of electromagnetic heating pot made is abundanter, and slow fire culinary art more meets the habits and customs of modern's health diet, has the preferably market demand.
After adopting the utility model scheme, because the weak electric signal line is arranged on the magnetic stripe outside and connects up along magnetic stripe, and the magnetic field major part concentrates in the magnetic stripe so that the magnetic field of weak electric signal line position a little less than, so will further reduce the electromagnetic interference that electrical network forms by the weak electric signal line.
The earth connection that connects on the metal inner surface in the utility model scheme is fixed on the electromagnetic wire coil top, mainly refer to earth connection is fixed on the upper direction of electromagnetic wire coil, be not refer in particular to electromagnetic wire coil directly over, the magnetic field radiation of electromagnetic wire coil mainly concentrates on below and the side of electromagnetic wire coil, can so that earth connection is avoided the concentrated position of electromagnetic wire coil magnetic field radiation, can reduce by the electromagnetic interference of earth connection to electrical network after adopting this scheme.
After adopting the utility model scheme, because electric control gear comprises the filter band that is provided with electromagnetic interference filter circuit, and master control borad and filter band are wholely set, can connect by the wiring of circuit board between master control borad and the filter band, save in terms of existing technologies the connection wire, can reduce the electromagnetic interference that electrical network is formed by wire.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of the required use of embodiment, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the electromagnetic heating pot made schematic diagram that removes among the utility model embodiment behind the shell;
Fig. 2 is the pot body cutaway view of electromagnetic heating pot made among the utility model embodiment;
Fig. 3 is I part partial enlarged drawing among Fig. 2;
Fig. 4 is electromagnetic heating pot made assembly relation schematic diagram among the utility model embodiment;
Fig. 5 is earth connection schematic diagram among the utility model embodiment;
Fig. 6 is IH rice cooker schematic diagram among the utility model embodiment.
Reference numeral:
20 pots of courage 30 electromagnetic wire coils of 10 pots of bodies
40 supply sockets, 50 pot covers, 60 handles
11 master control borads, 12 signal supervisory instruments, 13 metalworks
14 holding wires, 15 metal inner surfaces, 41 earth connections
411 splicing ears, 412 terminals, 31 magnetic stripes
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment provides a kind of electromagnetic heating pot made with high electrical-magnetic compatibility, as depicted in figs. 1 and 2, this electromagnetic heating pot made comprises pot body 10, pot courage 20, electromagnetic wire coil 30 and electric control gear, be provided with the inner chamber of placing pot courage 20 in the pot body 10, can carry out electromagnetic induction heating to pot courage 20 by electromagnetic wire coil 30.Electric control gear comprises master control borad 11 and controls plate among the utility model embodiment, control plate in the accompanying drawing not shown, and be provided with the strong and weak electricity isolating device between plate and the master control borad controlling, so that the forceful electric power electric current can not drain in the light current circuit of controlling plate, guaranteed the security that the user operates by controlling plate.As shown in Figure 3, the utility model embodiment is provided with signal supervisory instrument 12 in pot body 10, and signal supervisory instrument 12 passes that electromagnetic wire coil 30 arranges and through weak electric signal line 14 with control plate and be connected, in order to reduce the utility model embodiment electromagnetic heating pot made to the electromagnetic interference of electrical network, the utility model embodiment signal supervisory instrument 12 comprises the metalwork 13 without earth connection, and metalwork 13 can protrude in inner chamber.
The specified heating power of the electromagnetic wire coil among the utility model embodiment is 100W～3000W, adopts generally speaking the specified heating power of 1000W～1800W comparatively suitable, can adopt the specified heating power of 400W～800W when slow fire heats.
In order to guarantee user's safety, the metalwork that protrudes in inner chamber in the prior art needs ground connection, and the electromagnetic interference to electrical network is easily caused in the radiation areas of earth connection process electromagnetic wire coil.The utility model embodiment is controlling under the prerequisite that is provided with the strong and weak electricity isolating device between plate and the master control borad, through the weak electric signal line with control plate and be connected the situation that the forceful electric power electric leakage just can not appear in signal supervisory instrument, the utility model embodiment will protrude from the metalwork of the metalwork employing of inner chamber without earth connection in the signal supervisory instrument, saved direct signal supervisory instrument earth connection across electromagnetic wire coil, can significantly reduce electromagnetic heating pot made by the electromagnetic interference of earth connection to electrical network so that electromagnetic heating pot made can be better test by electromagnetic interference.
Master control borad among the utility model embodiment mainly comprises control Electromagnetic Heating power circuit, so that the eddy-current heating to electromagnetic wire coil is controlled, mainly be operation control function and control plate, can the input control function by controlling plate such as the user, perhaps can show some information to the user by controlling plate.
Strong and weak electricity isolating device among the utility model embodiment can adopt optocoupler, particularly optocoupler and other electrical equipments can be connected into the strong and weak electricity buffer circuit, so that form the effect of isolation between forceful electric power and the light current, repeat no more the concrete scheme of strong and weak electricity buffer circuit by this strong and weak electricity buffer circuit herein.Certainly, those skilled in the art can be replaced with optocoupler other original papers in addition with the strong and weak electricity isolating device according to the specific design needs, for example adopt the mode of isolating transformer to carry out the strong and weak electricity isolation.Though the effect of buffer circuit is also arranged between general transformer primary, the auxiliary winding, in the situation that frequency is higher, the electric capacity between two windings still can make between two lateral circuits and electrostatic interference occur.For avoiding this interference, the former and deputy winding of isolating transformer generally is placed on the different stems, to reduce electric capacity between the two; Also have and adopt former and deputy winding to place with one heart, put electrostatic screen but between winding, add, to obtain high noiseproof feature.
The strong and weak electricity isolating device can be arranged on the master control borad among the utility model embodiment, also can be arranged on and control on the plate, also can increase in addition a circuit board strong and weak electricity isolating device is set.In order to reduce the circuit board cost, and guarantee to reduce controlling the impact of plate, the utility model embodiment preferably is arranged on the strong and weak electricity isolating device on the master control borad.
As shown in Figure 1, for the magnetic field radiation that reduces electromagnetic wire coil reaches electrical network by wire, the electromagnetic wire coil 30 of the utility model embodiment includes magnetic stripe 31, magnetic stripe 31 mainly plays the effect of poly-magnetic, magnetic stripe 31 can be gathered in magnetic stripe inside with the magnetic field major part that induction coil in the electromagnetic wire coil produces, and prevents the magnetic field energy leakage.The weak electric signal line 14 of the utility model embodiment signal supervisory instrument is located at magnetic stripe 31 outsides of described electromagnetic wire coil 30, and weak electric signal line 14 connects up along magnetic stripe, that is to say that weak electric signal line 14 is positioned at magnetic stripe 31 outsides and is positioned at the regional extent at magnetic stripe 31 places, since the magnetic field in the regional extent at magnetic stripe 31 places relatively a little less than, can reduce the magnetic field radiation that the weak electric signal line 14 of signal supervisory instrument 12 receives, further reduce the utility model embodiment electromagnetic heating pot made to the electromagnetic interference of electrical network.
Signal supervisory instrument 12 includes but not limited to temperature sensor or thermal cut-off among the utility model embodiment, certainly signal supervisory instrument 12 can also be to be provided with simultaneously temperature sensor and thermal cut-off structure, as thermistor and hot melt resistance break are set under same metalwork.Signal supervisory instrument can also be the element that detects other signals when practice, repeats no more herein.
As shown in Figure 1, under normal circumstances, the inner chamber of placing the pot courage on the pot body generally has metal inner surface 15, and in order to guarantee user's use safety, described metal inner surface 15 is by ground connection, to prevent the metal inner surface electric leakage.Particularly, metal inner surface 15 operated by rotary motion among the utility model embodiment and are provided with thermal insulator at metal inner surface 15 above electromagnetic wire coil, such as resistive heater or heating tape etc., by metal inner surface 15 heat that thermal insulator produces is conducted to a pot courage, be incubated.
The inventor finds, the electromagnetic interference that electrical network is formed by earth connection is one of electromagnetic heating pot made main interference source of electrical network being formed electromagnetic interference, the utility model is for the main interference source of electromagnetic interference, and solving it to the problem that electric network electromagnet disturbs, concrete scheme is: the earth connection 41 that will be connected to metal inner surface 15 is fixed on the electromagnetic wire coil top.Here the top of indication refers to the electromagnetic wire coil superjacent air space, mainly refers to the top of electromagnetic wire coil sidepiece, be not refer in particular to electromagnetic wire coil directly over.After adopting this scheme, earth connection 41 is connected to apart from nearest one section of metal inner surface 15 and is positioned at electromagnetic wire coil 30 tops, in order to avoid the larger positions of magnetic field radiation such as electromagnetic wire coil 30 sides, below, greatly reduce the magnetic field radiation that earth connection is subject to electromagnetic wire coil 30, thereby reduce electromagnetic induction heating to the electromagnetic interference of electrical network so that electromagnetic heating pot made can be better test by electromagnetic interference.
In order better earth connection 41 to be laid along electromagnetic wire coil 30 tops, the utility model embodiment preferably lays earth connection to the external side of pot, so that earth connection 41 can be installed in a pot body top, difficult drop-off easily along pot body 10 tops from metal inner surface 15.
As shown in Figure 4, the utility model embodiment can be installed in master control borad 11 a pot body top, for the wiring of simplifying earth connection 41 is installed, earth connection 41 passes between master control borad 11 and pot body top among the utility model embodiment, so that earth connection 41 is fixed on the electromagnetic wire coil top, so that earth connection 41 is not easy to come off, also prevent from transporting, cause in the use procedure earth connection of electromagnetic wire coil top to come off and cause electric network electromagnet disturbed increasing, the part of the earth connection bottommost of wherein expressing among Fig. 4 is pressed on the master control borad 11.
In order to reduce electromagnetic heating pot made to the electromagnetic interference of electrical network, the electric control gear of the utility model embodiment also comprises filter band, and at filter band electromagnetic interference filter circuit is set.
In order further to reduce the electromagnetic interference to electrical network, the utility model embodiment can be wholely set master control borad 11 and filter band, also just be equivalent on master control borad 11, arrange simultaneously Electromagnetic Heating power circuit and electromagnetic interference filter circuit, for Electromagnetic Heating power circuit and electromagnetic interference filter circuit in the prior art are separately positioned on two schemes on the circuit board, after adopting this scheme, the wire that is exposed in the electromagnetic wire coil radiation areas can be reduced, thereby the utility model embodiment electromagnetic heating pot made can be reduced to the electromagnetic interference of electrical network.
Certainly, filter band and master control borad also can divide and be arranged among the utility model embodiment, for the anti-electromagnetic interference that improves master control borad and reduce electromagnetic interference to electrical network, in the situation that dividing, filter band and master control borad be arranged, the utility model embodiment may be selected in filter band and the close setting of master control borad, as adopt filter band and master control borad to be arranged side by side in lateral location, perhaps adopt filter band and master control borad to overlap in lateral location, in order to can shorten the wire between filter band and the master control borad, reduce the electromagnetic interference that electrical network is produced to by wire.
The pot body of the utility model embodiment is provided with power input, as shown in Figure 1 and Figure 4, concrete power input can adopt but be not limited to supply socket 40 among the figure, described master control borad 11 is provided with the Electromagnetic Heating power circuit, and described Electromagnetic Heating power circuit is connected to power input by electromagnetic interference filter circuit.
No matter whether master control borad is wholely set with filter band, the utility model embodiment all can be arranged on master control borad 11, filter band and power input the same side of pot body, in order to shorten from supply socket 40 to master control borad the earth connection 11, reduce the magnetic field radiation that earth connection receives, reduce electromagnetic heating pot made to the electromagnetic interference of electrical network.
The Electromagnetic Heating power circuit generally comprises such as lower module among the utility model embodiment: switch power module, IGBT control module, bridge heap rectification module, DC filtering module, LC oscillation module, Electromagnetic Heating special chip control module, realize the control of Electromagnetic Heating by above-mentioned module.
In order to filter electromagnetic interference as much as possible, the utility model embodiment is electrically connected metal inner surface 15 with the earth terminal of electromagnetic interference filter circuit, so that metal inner surface 15 can by the earth terminal ground connection of electromagnetic interference filter circuit, can also reduce the electromagnetic interference to electrical network when preventing from leaking electricity.
Adopt after the utility model embodiment, reduce by the electromagnetic interference of earth connection to electrical network, experimental studies have found that through the inventor, adopt after the utility model embodiment, saving in the situation of the filtering ring that power line twines, the test request that still can meet electromagnetic interference, thereby the cost of reduction electromagnetic heating pot made.
In addition, through checking, adopt after the utility model embodiment, if adopt lower power to heat, form that the signal frequency composition increases in the circuit, its to the electromagnetic interference of electrical network still in safe range, thereby so that adopt the electromagnetic heating pot made of this programme can adopt low-power to carry out the slow fire culinary art, so that the cooking method of electromagnetic heating pot made is abundanter, and slow fire culinary art more meets the habits and customs of modern's health diet, has the preferably market demand.
As shown in Figure 1 and Figure 4, supply socket 40 operated by rotary motion are in the external side of pot, earth connection is drawn from the ground terminal of supply socket 40 in the present embodiment, ground terminal in the utility model embodiment supply socket 40 also is electrically connected with the earth terminal of electromagnetic interference filter circuit, conductor, the metal inner surface in pot body 10 shells by earth connection 41, in order to guarantee the safety of master control borad 11, and can be by the conductor in the shell and metal inner surface electric leakage.Particularly, conductor is the reinforcement metal support at pot body rear portion and/or the metal shell of pot side section in the utility model embodiment housing, and the reinforcement metal support here generally is used for the jointed shaft at supporting pan body rear portion; Specifically can adopt but be not limited to following scheme:
The first, earth connection directly is electrically connected with this reinforcement metal support, then the reinforcement metal support is electrically connected with other conductor parts in the shell, form unified ground protection.
The second, earth connection directly is electrically connected with the metal shell of this pot side section, then the metal shell with pot side section is electrically connected with other conductor parts in the shell, forms unified ground protection.
Three, just earth connection is electrically connected with the metal shell of this reinforcement metal support, pot side section simultaneously.
In order to simplify the wiring of connecting wires, earth connection is connected with the metal inner surface 15 of conductor and inner chamber in the earth terminal of ground terminal, electromagnetic interference filter circuit, the shell successively among the utility model embodiment, main cause is as follows: the first, generally with the position of filter band design in close supply socket, so that earth connection is electrically connected with the earth terminal of electromagnetic interference filter circuit first after out through the ground terminal of bottom, can simplify earth connection; The second, the earth terminal of electromagnetic interference filter circuit is generally towards shell, be directly connected to the shell conductor from the earth terminal of electromagnetic interference filter circuit and can simplify earth connection, be connected at last the metal inner surface of inner chamber by conductor in the shell, can be from the wiring of electromagnetic wire coil top.
As can be seen from Figure 4, be connected to that the earth connection between the conductor strides across master control borad 11 in the earth terminal of electromagnetic interference filter circuit and the shell, master control borad 11 is formed the semi-surrounding structure, so that earth connection can with master control borad on segment conductor form electric capacity, can absorb a part to the electromagnetic interference of electrical network by this electric capacity.In addition; even also can there be the fraction leakage magnetic field in electromagnetic wire coil after shielding; after adopting earth connection to stride across the scheme of master control borad formation semi-surrounding structure; earth connection forms larger receiving area in the master control borad exterior lateral area; thereby absorb the magnetic field that a part is leaked; prevent from interference is caused to the electronic devices and components on the master control borad in the magnetic field of leaking, play certain protective effect.
For installation and the production that makes things convenient for earth connection, earth connection as shown in Figure 5 among the utility model embodiment, this earth connection 41 comprises three section leads that connect successively and four splicing ears that are located at wire termination, and the end of two wires that wherein are connected shares a binding post.The splicing ear 411 that is connected with ground terminal in the supply socket on the earth connection in the present embodiment can adopt flag terminal, can make things convenient for the plug of terminal, and on flag terminal sheathed garment bag.Other 412 of terminals can adopt circular terminal on the earth connection, by screw circular terminal are fixed to corresponding position, and it is firm to guarantee to install.
The utility model embodiment is mainly used in electromagnetic heating pot made, can reduce the electromagnetic interference to electrical network, such as: apply to IH pressure cooker, IH rice cooker, Electromagnetic Heating saucepan etc., wherein the external structure of IH rice cooker can be referring to shown in Figure 6, and this IH electric cooker comprises pot body 10, pot cover 50 and handle 60.
The above; it only is the specific embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (11)
1. the electromagnetic heating pot made with high electrical-magnetic compatibility comprises a pot body, pot courage, electromagnetic wire coil and electric control gear, is provided with the inner chamber of placing the pot courage in the pot body; It is characterized in that, described electric control gear comprises master control borad and controls plate, described controlling is provided with the strong and weak electricity isolating device between plate and the master control borad, be provided with signal supervisory instrument in the described pot body, signal supervisory instrument pass the electromagnetic wire coil setting and through the weak electric signal line with control plate and be connected, signal supervisory instrument comprises the metalwork without earth connection, and metalwork can protrude in inner chamber; The specified heating power of described electromagnetic wire coil is 100W～3000W.
2. electromagnetic heating pot made according to claim 1 is characterized in that, described strong and weak electricity isolating device is optocoupler or isolating transformer.
3. electromagnetic heating pot made according to claim 1 is characterized in that, described electromagnetic wire coil comprises magnetic stripe, and described weak electric signal line is arranged on the magnetic stripe outside and connects up along magnetic stripe.
4. electromagnetic heating pot made according to claim 1 is characterized in that, described signal supervisory instrument comprises temperature sensor and/or thermal cut-off.
5. the described electromagnetic heating pot made of any one in 4 according to claim 1 is characterized in that, described inner chamber comprises metal inner surface, and metal inner surface passes through ground connection.
6. electromagnetic heating pot made according to claim 5 is characterized in that, described earth connection is fixed on the electromagnetic wire coil top.
7. electromagnetic heating pot made according to claim 6 is characterized in that, described master control borad is installed in a pot body top, and described earth connection passes between master control borad and pot body top, so that earth connection is fixed on the electromagnetic wire coil top.
8. the described electromagnetic heating pot made of any one in 4 according to claim 1 is characterized in that, described electric control gear also comprises filter band, and described filter band is provided with electromagnetic interference filter circuit.
9. electromagnetic heating pot made according to claim 8 is characterized in that, described master control borad and filter band are wholely set.
10. according to claim 8 or 9 described electromagnetic heating pot mades, it is characterized in that, described pot body is provided with power input, and described master control borad is provided with the Electromagnetic Heating power circuit, and described Electromagnetic Heating power circuit is connected to power input by electromagnetic interference filter circuit.
11. electromagnetic heating pot made according to claim 10 is characterized in that, described master control borad, filter band and power input are arranged on the same side of pot body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220126919 CN202636677U (en) | 2012-03-29 | 2012-03-29 | Electromagnetic heating cooker with high electromagnetic compatibility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220126919 CN202636677U (en) | 2012-03-29 | 2012-03-29 | Electromagnetic heating cooker with high electromagnetic compatibility |
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| CN202636677U true CN202636677U (en) | 2013-01-02 |
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| CN 201220126919 Expired - Lifetime CN202636677U (en) | 2012-03-29 | 2012-03-29 | Electromagnetic heating cooker with high electromagnetic compatibility |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105125049A (en) * | 2014-05-28 | 2015-12-09 | 佛山市顺德区美的电热电器制造有限公司 | Electric rice cooker |
| CN106051840A (en) * | 2016-07-08 | 2016-10-26 | 肇庆市天宇进出口贸易有限公司 | Electromagnetic heating device |
| CN109106191A (en) * | 2017-06-26 | 2019-01-01 | 佛山市顺德区美的电热电器制造有限公司 | Cooking machine and its control device |
| CN112369927A (en) * | 2020-11-06 | 2021-02-19 | 珠海格力电器股份有限公司 | Multi-segment IH electric cooker control method and device, multi-segment IH electric cooker and storage medium |
| CN113940550A (en) * | 2020-07-16 | 2022-01-18 | 浙江苏泊尔家电制造有限公司 | Electric assembly and electric cooking utensil with same |
-
2012
- 2012-03-29 CN CN 201220126919 patent/CN202636677U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105125049A (en) * | 2014-05-28 | 2015-12-09 | 佛山市顺德区美的电热电器制造有限公司 | Electric rice cooker |
| CN106051840A (en) * | 2016-07-08 | 2016-10-26 | 肇庆市天宇进出口贸易有限公司 | Electromagnetic heating device |
| CN109106191A (en) * | 2017-06-26 | 2019-01-01 | 佛山市顺德区美的电热电器制造有限公司 | Cooking machine and its control device |
| CN109106191B (en) * | 2017-06-26 | 2021-09-21 | 佛山市顺德区美的电热电器制造有限公司 | Cooking machine and control device thereof |
| CN113940550A (en) * | 2020-07-16 | 2022-01-18 | 浙江苏泊尔家电制造有限公司 | Electric assembly and electric cooking utensil with same |
| CN112369927A (en) * | 2020-11-06 | 2021-02-19 | 珠海格力电器股份有限公司 | Multi-segment IH electric cooker control method and device, multi-segment IH electric cooker and storage medium |
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