CN1809229A - Heating cooker - Google Patents
Heating cooker Download PDFInfo
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- CN1809229A CN1809229A CNA2006100048379A CN200610004837A CN1809229A CN 1809229 A CN1809229 A CN 1809229A CN A2006100048379 A CNA2006100048379 A CN A2006100048379A CN 200610004837 A CN200610004837 A CN 200610004837A CN 1809229 A CN1809229 A CN 1809229A
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- heating
- infrared heater
- load coil
- infrared
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
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- Induction Heating Cooking Devices (AREA)
- Electric Stoves And Ranges (AREA)
Abstract
The present invention provides a heating cooker capable of further efficiently heating cookware to be heated that is made of a low-permeability material. This heating cooker comprises an induction heating coil 6 and an infrared heater 19 for heater heating. A heating power controller determines the material of the cookware 8 to be heated and controls an inverter and a heating element conducting section according to the material determined, thereby controlling the heating ratio between the induction heating coil 6 and the infrared heater 19. A temperature detection part 11 is disposed inside the infrared heater 19 forming a ring-like shape; and a heater installation member 17 is so structured that its side wall 17a prevents an infrared ray radiated from the infrared heater 19 from reaching the temperature detection part 11.
Description
Technical field
The present invention relates to possess the heating device of the heating unit that contains the load coil that is useful on the cooking-vessel on the top board that heating is positioned in the upper surface that constitutes housing and infrared heater.
Technical background
In the induction heating cooking instrument, how to heat the sort of cooking-vessel that constitutes by low permeability and high conductivity material of aluminum pot or copper pot and become a problem.As the conventional art that solves this problem, disclose a kind of formation in the patent documentation 1, detect floating or moving of pot that the repulsion that takes place when carrying out induction heating produces, the electric current of load coil is supplied with in restriction.In addition, disclose a kind of formation in the patent documentation 2, between load coil and pot, insert aluminium sheet, pot is heated indirectly by this aluminium sheet of induction heating.
[patent documentation 1] spy opens clear 61-230289 communique
No. 3465712 communique of [patent documentation 2] special permission
In the technology that patent documentation 1 is disclosed, the problem of existence is, when being difficult to suppress repulsion because of pot in light weight, limits the supply of electric current significantly, and firepower is low as a result, can not carry out sufficient cooking.
In addition, in the technology that patent documentation 2 discloses since by aluminium sheet to the pot indirect, the efficiency of heating surface is reduced.That is, though make aluminium sheet and pot induction heating similarly, its power is all supplied with by the induction heating equipment that is made of inverter and load coil etc.Therefore, strengthened the switch element of supplying with the IGPT that constitutes inverter etc., and the power of resonant capacitor, smmothing capacitor, inductor etc., these size of component are maximized, high price becomes.And the coil section of also having to strengthen load coil is long-pending, makes that induction heating equipment is whole to maximize.In addition, during the heating aluminum pot, as mentioned above, the repulsion that the magnetic flux of load coil produces moves pot.Move for suppressing this, be necessary to improve the frequency of the electric current that flows through load coil, strengthened the loss that produces because of skin effect.Be to suppress the loss that skin effect causes, be necessary for example in the 2kW output more than 1000, for example the superfine litz wire about 50 μ m constitutes load coil with many of twisteds.In addition, as patent documentation 2, bigger because the electrorheological that aluminium sheet also the time flows through load coil in heating gets, the bar number that constitutes the superfine wire of litz wire must be more, have to remain the formation of high price.
In addition, because aluminium is nonmagnetic material, permeability is low, and the leakage flux of load coil is big, and the number of turn of coil is many, and the voltage height of coil.So the electrostatic capacitance between pot and the load coil just has through pot high voltage is added on the human body, flows through the danger of high-frequency current.For preventing this class accident, be necessary between load coil and top board, to insert barricade and make it ground connection, there is further complicated problem of structure.
Summary of the invention
The present invention does in view of the above fact, and its purpose is to provide the heating device that can heat the cooking-vessel that constitutes with low-permeability material more efficiently.
Heating device of the present invention is characterized in that having: housing constitutes the upper surface of this housing and the top board of mounting cooking-vessel; Have the load coil that the efficiency of heating surface is well constituted, and with the annular infrared heater of infrared radiation, and can heat described cooking-vessel by at least one side wherein and the heating unit that disposes; Be configured in the inboard of the ring of described exothermal infrared body formation, the temperature detection part that the temperature of detection cooking-vessel is used; Between this temperature detection part and described infrared heater, stop the baffle of the infrared radiation of this infrared heater radiation to described temperature detection part, high-frequency current is supplied with the high-frequency current supply part of described load coil; Described infrared heater is switched on and the energized components of the usefulness of generating heat; And by controlling the power of supplying with described high-frequency current supply part and described energized components respectively, control is to the heating control section part of described cooking-vessel heating.
According to such formation,, also may heat by at least one side in load coil and the infrared heater even the material of cooking-vessel has nothing in common with each other.And, during its efficiency of heating surface reduces in induction heating material, as long as with infrared heater just heat can, the efficiency of heating surface is good in the time of therefore constituting load coil and make the high resistance material, raising induction heating efficient.In addition, because temperature detection part is configured in the inboard of the ring that infrared heater makes, simultaneously, baffle stops the infrared radiation of infrared heater radiation to temperature detection part, the energy precision is carried out the temperature detection of cooking-vessel well when therefore, carrying out radiation heating.
In addition, the profile of so-called here " ring " shape is not limited to annular, for example also can be ellipse or rectangle.In addition, so-called temperature detection part " is configured in the inboard of the ring that infrared heater makes ", is positioned at the inboard meaning the plan position approach relation when being meant from the top board top, and it is consistent that the position on both short transverses of definiteness that differ reaches.
According to the present invention, by with at least a side in load coil and the infrared heater, can carry out the good heating of efficient that the material with cooking-vessel adapts, can reduce the number of turn and the minimizing twisted line number of load coil, with formation at low cost.In addition, when utilizing the infrared heater infrared radiation to heat, the area that is provided with of heater needn't correspondingly strengthen, so can do one's utmost to avoid the configuration interference with load coil.In addition, the energy precision is carried out the temperature detection when radiation heating well.
Description of drawings
Fig. 1 is the 1st embodiment of the present invention, and vertical profile illustrates the front view of the part of heating device body with looking.
Fig. 2 is the side's of Fig. 1 the enlarged drawing of mounting portion side.
Fig. 3 illustrates the functional block diagram that control system constitutes.
Fig. 4 illustrates the flow chart of control content of the firepower control device of major part of the present invention.
Fig. 5 (a) illustrates according to the input current ip of the material of cooking-vessel and the graph of a relation of coil current ic, (b) is the equivalent circuit diagram of load coil.
The temperature rising degree difference figure of Fig. 6 after for explanation cooking-vessel beginning in the situation of nonmetallic materials and uncharge situation from heating.
Fig. 7 illustrates the figure suitable with Fig. 2 of the present invention the 2nd embodiment.
Fig. 8 illustrates the figure suitable with Fig. 2 of the present invention the 3rd embodiment.
Fig. 9 illustrates the figure suitable with Fig. 2 of the present invention the 4th embodiment.
Figure 10 illustrates the figure suitable with Fig. 2 of the present invention the 5th embodiment.
Figure 11 illustrates the figure suitable with Fig. 4 of the present invention the 6th embodiment.
Label declaration
1 housing, 3 top boards, 6,7 load coils, 8 cooking-vessels
11,12 temperature detection parts, 17,18 infrared heater supports
19,20 infrared heaters, 21 firepower control device, 22 operating portions
24 inverters, 28 heaters energising control part, 31 load coils
32 infrared heater support 33a, 33b infrared heater
34 infrared heater supports, 35 infrared tape shape heating elements
36,37 load coils, 38 infrared heater supports
39 infrared heaters, 40 load coils
41 infrared heaters, 60～64 heating units
Embodiment
(the 1st embodiment)
Below referring to figs. 1 through Fig. 6 the 1st embodiment of the present invention is described.Fig. 1 looks the front view of the part that heating device 1 is shown for vertical profile.In the heating device 1, shell is a housing 2, and top board 3 is positioned at its top, constitutes the upper surface of housing.The inside of housing 2, the mounting portion 4,5 that is positioned at described top board 3 just below configuration load coil 6,7, like this, make induction heating respectively be positioned in cooking-vessel 8 (with reference to Fig. 2) in the mounting portion 4,5.In addition, Fig. 2 amplifies the part of the mounting portion 4 that Fig. 1 is shown.
The front of housing 2 is provided with the door 10 of operation panel 9 and oven, and by operation panel 9 wherein, the user can carry out the operation of above-mentioned load coil 6,7, and the inside of housing 2 at the rear of baking fire door 10 connects stove (not shown).In addition, in the lower surface of top board 3, specific central part in described mounting portion 4,5 under the position on, the temperature detection part 11,12 that is made of thermistor etc. is set.Load coil 6,7, by 13,14 supports of load coil support, on the lower face side of load coil support 13,14, the ferrite 15,16 that the magnetic circuit of the magnetic flux of configuration formation load coil 6,7 is used.
In addition, as shown in Figure 2,2 sections up and down of load coil 6,7 coileds are divided into the configuration of 2 parts simultaneously separately.That is, have separately with minor diameter and be positioned at all lateral coil 6a, the 7a of all sides and outer circumferential side coil 6b, the 7b of the outer circumferential side that is positioned at major diameter.And between interior all lateral coil 6a, 6b, between outer circumferential side coil 7a, the 7b, dispose the annular infrared heater support 17,18 that section slightly is the W font respectively, configuration forms infrared heater 19a, 19b, 20a, the 20b of annular in this infrared heater support 17,18.
Sidewall 17a, the 18a of infrared heater support 17,18 determine and form it highly to make as the protection walls of the infrared radiation that prevents infrared heater 19a, 19b, 20a, 20b radiation to temperature detection part 11,12 and play a role.Specifically, the height of setting sidewall 17a, 18a is the height that covers the straight line of the outer rim that connects infrared heater 19a, 19b, 20a, 20b and temperature detection part 11,12 upper ends.
That is to say that load coil 6,7 and infrared heater 19a, 19b, 20a, 20b make the lower surface ground configuration that faces top board 3.The material of top board 3, the near-infrared that is chosen in infrared heater 19a, 19b, 20a, 20b radiation is to the middle good glass of transmissivity of infrared scope (wavelength 0.8 μ m～4 μ m).
Fig. 4 illustrates the functional block diagram that control system constitutes.Firepower control device (heating control section part, material control assembly) 21 is arranged on the inside of housing 2, is made of microcomputer.To firepower control device 21, input is imported the temperature detection signal from temperature detection part 11,12 simultaneously from the operation signal of the operating portion 22 that is configured in operation panel 9.Then, firepower control device 21 is according to the control program of these inputs and pre-stored, control is configured in the action of the display part 23 of operation panel 9, and control inverter (high-frequency current supply part) 24 is controlled and by inverter 24 high-frequency current supplied with load coil 6 (and 7) simultaneously.
In addition, resonant capacitor 25 is connected in series in load coil 6.Adjust load coil 6 or resonant capacitor 24, when making material at cooking-vessel 8 be high resistance (high permeability) material such as iron, induction heating efficient is good.Here, so-called " high resistance " be meant material with the situation of aluminium as benchmark (for example about the bottom of a pan thickness 1mm) high situation of resistance value when comparing.
In addition, when supposing the such low electrical resistant material of also induction heating aluminium, as previously mentioned, be necessary or the twisted number that makes litz wire more than or equal to 1000, or make about 3 times of the corresponding situation of turn ratio iron of coil.Relative therewith, as the induction heating object is reduced into high-resistance material in advance, then twisted line number be about tens just can, also needn't increase the number of turn of coil, therefore, constitute load coil 6,7 for more low-cost be possible.
To be transformed into direct current by rectification circuit 27 from the alternating current of commercial ac power source 26, supply with inverter 24 as the driving power supply.In addition, also supply with heater conducting parts (energized components) 28 from the alternating current of commercial ac power source 26.28 pairs of infrared heaters 19 of heater energising control part (and 19) energising AC power, its energising amount is controlled by heater energising control part 28 by firepower control device 21.
In addition, at the input side of rectification circuit 27 and the outlet side of inverter 24, dispose current transformer 29,30 respectively, their detection signal is supplied with firepower control device 21.Then, firepower control device 21 is coil current ic with regard to detecting the input current ip of heating device and the output current of inverter 24.In addition, load coil 6 and 7, inverter 24, infrared heater 19 and 20, heater energising control part 28 constitutes above-mentioned heating unit 60.
The effect of present embodiment is described below with reference to Fig. 4 to Fig. 6.Fig. 4 illustrates the flow chart that the firepower control device 21 of major part of the present invention is produced control content.Firepower control device 21 at first reads in the set point (step S1) of the input power of user's setting by operating portion 22, carry out the material of cooking-vessel and judge (step S2).At step S3, judge to be the high-resistance metal material among the S5 respectively then, or middle resistance metal material.
For example judging to be the such high-resistance metal material of iron, the middle resistance metal material that non magnetic SUS (stainless steel) is such, the low-resistance metal material that aluminium or copper are such, or in the such nonmetallic materials of marmite or glass, when supplying with load coil 6 by inverter 24 high-frequency current that voltage and frequency is certain, shown in Fig. 5 (a), be that the relation of coil current ic is judged according to the output current of input current ip and inverter 24.
That is, when the material of cooking-vessel 8 was the magnetic of iron etc., the magnetic flux that load coil 6 takes place passed through through cooking-vessel 9 easily, and easily with cooking-vessel 8 interlinkages, the leakage flux minimizing is so the equivalent inductance L of coil 6 (with reference to Fig. 5 (b)) reduces.Because of the magnetic resistivity of material is big, skin effect (eddy current concentrates on the effect of load coil 6 sides in the bottom of a pan) is also big again, so the equivalent resistance R of coil 6 increases.
On the other hand, during aluminium and copper are like that non magnetic and resistivity is little material, the magnetic flux that coil 6 takes place is difficult to arrive cooking-vessel 8, and leakage flux increases, so the equivalent inductance L of coil 6 increases.And because resistivity is little, skin effect is also little, so equivalent resistance R also reduces.Non magnetic SUS presents the value of the centre of iron and aluminium.In addition during marmite etc. nonmetal, when perhaps zero load, because of there not being induced current flow fully, thus equivalent inductance L maximum, equivalent resistance R minimum.
In addition, the equiva lent impedance Z of coil current ic and load coil 6 is inversely proportional to, and input current ip is directly proportional with coil current ic, R/Z.As a result, according to the material of cooking-vessel 8, such relation shown in Fig. 5 (a) is arranged.That is,
| Material | Coil current ic | Input current ip |
| The non magnetic SUS aluminium of iron nonmetal (marmite) | (among the R → Z in) big (R little → Z is little) little (ω L big → Z is big) in little (R big → Z is big) | (among the R/Z) little (R/Z is little) little (R/Z is little) in (R/Z is big) greatly |
Thereby, can judge the material of cooking-vessel 8 according to the magnitude relationship of input current ip, coil current ic.
Then, when step S3 judges that material is the high-resistance metal material (" YES "), the input power set point that firepower control device 21 reads in step S1 is as the input power of inverter 24 is carried out induction heating cooking (step S4).It promptly is the common induction heating cooking that in the past carried out.
On the other hand, if material is middle resistance metal material (step S5, " YES "), then firepower control device 21 carries out induction heating cooking (step S6) with the unlikely excessive level of the electric current that flows through load coil 6.Then when step S6 adjusts the firepower of induction heating cooking, (step S7 when between the input power set point that this heating power and step S1 read in, there are differences, " YES "), then firepower control device 21 carries out infrared ray heating (step S8) with this difference power section supply heater energising control part 28.In addition, when low-resistance nonmagnetic material, because the equivalent resistance R of load coil 6 reduces, so adjust or make when being added to the high-resistance magnetic material of voltage ratio of load coil 6 lower by inverter 24, or frequency is risen, to improve the efficiency of heating surface (step S9).
Again at step S5, material be non-in during the metal material of resistance (" NO "), material is the such low-resistance nonmagnetic material of aluminium, or such nonmetallic materials or the uncharge situation of marmite.At this moment do not carry out induction heating cooking, and the power supply heater energising control part 28 that will be equal to the input power set point that step S1 reads in carries out infrared ray heating (step S10).As mentioned above, can not make nonmetallic materials and uncharge differentiation according to the relation of input current ip and coil current ic.Therefore utilize the temperature rising degree (step S11) after the infrared ray heating of temperature detection part 11,12 detections in step S9 begins.
That is, as shown in Figure 6, for example in the mounting portion 4 of top board 3 during mounting marmite etc., because the thermal capacity of load is big, the temperature rising degree (rising) after the heating beginning relatively relaxes.In contrast, when zero load, owing to have only the thermal capacity of top board 3, the temperature-rise ratio after the heating beginning is rapider.Based on the difference of this temperature rising degree, differentiate nonmetallic materials with
Zero load.Then, (step S12:YES ") stops infrared ray heating (step S13), and (" NO ") just remains untouched and return step S1 and continue the infrared ray heating when being judged to be nonmetallic materials when firepower control device 21 is judged to be when zero load.
According to above-mentioned present embodiment, heating and cooking appliance is fully felt answer heater coil 6 and infrared heater 19, firepower control device 21 is judged the material of cooking-vessel, according to the material control inverter 24 and heater energising control part 28 of judgement, control is by the add thermal ratio of load coil 6 with infrared heater 19 generations.
Therefore, when the cooking-vessel 8 of the material of decrease in efficiency heats in to induction heating, by the add thermal ratio of relative raising by infrared heater 19 generations, but the heating that implementation efficiency is high, can select the heating balance of induction heating and infrared ray heating according to the material of cooking-vessel 8, so can add the cooking-vessel 8 of various materials such as hot iron, SUS, aluminium, copper with high efficiency.
Specifically, for example judge the high resistance material of cooking-vessel 8 grades, or the middle resistance material of non magnetic SUS etc., or the low resistance material or the nonmetallic materials of aluminium etc., when the high resistance material, only carry out induction heating, when middle resistance material, use the heating of induction heating and infrared ray in the lump, when low resistance material or nonmetallic materials, only carry out the infrared ray heating.And, constitute load coil 6 owing to reduce the number of turn and reduce twisted line number, make when the high resistance material efficiency of heating surface good, therefore can constitute and improve induction heating efficient with low cost.
In addition, reduce the power that load coil 6 and inverter 24 are supplied with, can select small-sized and cheap element power component, resonant capacitor 5, not shown smmothing capacitor or the inductor of the IGBT that constitutes inverter 24 etc.In addition because the supply power of load coil 6 is reduced, so reduce the high-frequency current that flows into human body through pot, there is no need and top board between insertion barricade etc.And infrared heater 19 infrared radiations can be heated to the temperature more than or equal to 500, so needn't area be set corresponding increase, can do one's utmost to avoid the configuration interference with load coil 6.In addition, because the sectional area of infrared heater 19 reduces,, thereby can prevent the decline of induction heating efficient so infrared heater 19 itself almost is not subjected to induction heating.
In addition, when firepower control device 21 is nonmetal in the material of judging cooking-vessel 8, controls and make the electric current supply that stops by 24 pairs of load coils 6 of inverter, heat by infrared heater 19 specially.That is to say that when the nonmagnetic material of aluminium, steel etc., the magnetic flux that load coil 6 takes place is because of being difficult to absorption, magnetic flux leaks easily in the induction heating.On the other hand, the magnetic flux that utilizes infrared heater 19 energising to take place is few and be low frequency, therefore can heat under the state that does not almost have flux leakage.Even the cooking-vessel 8 of non-metallic material such as marmite or glass boiler also can be corresponding in addition, at this moment can suppress the supply of the power that is helpless to heat.
According to present embodiment, configuration load coil 6 makes the lower surface that all faces top board with infrared heater 19, so can shorten and the standoff distance of cooking-vessel 8, efficient is carried out induction heating and infrared ray well and heated.Therefore, this also becomes load coil 6 does not have the configuration of interfering with infrared heater 19, so do not finish infrared ray heating and induction heating mutually simultaneously, can improve the efficiency of heating surface.In addition, because of load coil 6 is configured in the center side of heating unit 60, so in the pot footpath hour also energy efficiency well carry out induction heating.
In addition, load coil 6 is divided into 2, disposes infrared heater 19 betwixt, form the direction of cancelling out each other so be positioned at the magnetic flux that the load coil 6 of the both sides of infrared heater 19 takes place, so infrared heater 19 is difficult to be subjected to induction heating.In addition, coiling load coil 6 makes and forms 2 sections, can increase the number of turn and does not account for too large space.
In addition, temperature detection part 11 is configured in the inboard of the infrared heater 19 that forms annular, form the sidewall 17a of infrared heater support 17, make to have as the function of the infrared radiation that stops infrared heater 19 radiation to the protection walls of temperature detection part 11, the energy precision detects the temperature of cooking-vessel 8 well when infrared ray heats.
(the 2nd embodiment)
Fig. 7 illustrates the 2nd embodiment of the present invention, and the label that the part identical with the 1st embodiment mark is identical, and omit its explanation below only illustrates different parts.The 2nd embodiment is different with the configuration of infrared heater at the load coil of the lower side of top board 3.That is, it constitutes as is equivalent to the shown in Figure 7 of Fig. 2, and the load coil 31 that coiled is two sections is configured in the center side of mounting portion 4, and infrared heater support 32 and 2 infrared ray annular heating element 33a, 33b are configured in its outer circumferential side.Load coil 31 and infrared ray annular heating element 33A, 33b constitute heating unit 61.
When utilizing the 2nd embodiment of above-mentioned formation, also can obtain the effect same with the 1st embodiment.
(the 3rd embodiment)
Fig. 8 illustrates the present invention the 3rd embodiment.The 3rd embodiment also is illustrated in the load coil of top board 3 lower side and the different example of configuration of infrared heater equally with the 2nd embodiment.That is, as shown in Figure 8.Infrared heater support 34 is configured in the center side of mounting portion 4, in the inside of infrared heater support 34 with the infrared tape shape of the state configuration of coiled multi-turn heating element 35.Two sections load coils 36 of outer circumferential side configuration coiled at infrared tape shape heating element 35.
In addition, form the sidewall of infrared heater support 34, the same with the infrared heater support 17,32 among the 1st, the 2nd embodiment, make to have as the function of the infrared radiation that stops 35 radiation of infrared tape shape heating element to the protection walls of temperature detection part 11.In addition, infrared tape shape heating element 35 and load coil 36 constitute heating unit 62.
According to the 3rd embodiment of above-mentioned formation because infrared tape shape heating element 35 is configured in the center side of heating unit 62, therefore in the pot footpath hour also energy efficiency carry out the infrared ray heating well.
(the 4th embodiment)
Fig. 9 illustrates the present invention the 4th embodiment.Among the 4th embodiment, the same two of 37a, the 37b that are divided into of the load coil 37 that coiled is 2 sections with the 1st embodiment, configuration infrared heater support 38, make between load coil 37a, 37b and form to have the shape of recess, cover the top of load coil 37a, 37b at the outer circumferential side of load coil 37b.
In addition, infrared heater (radiation heater) 39 also is divided into two of 39a, 39b, be contained in the recess of infrared heater support 38, make infrared heater 39a between load coil 37a, 37b, infrared heater 39b is positioned at the outer circumferential side of load coil 37b.Promptly, alternately arrange ground configuration load coil 37a, infrared heater 39a, load coil 37b, infrared heater 39b from the central side of mounting portion 4.In addition, load coil 37 and infrared heater 39 constitute heating unit 63.In addition, infrared heater 39 is contained in the recess of infrared heater support 38, does not make the infrared ray of radiation arrive temperature detection part 11, and this is identical with the various embodiments described above.
The 4th embodiment according to above-mentioned formation, alternately arrange load coil 37 and infrared heater 39 that the ground configuration is divided into 2 separately, no matter, can make the heating distribution in the bottom of a pan better simultaneously so pot footpath size can both efficient be carried out the heating of induction heating and infrared ray well.
(the 5th embodiment)
Figure 10 illustrates the 5th embodiment of the present invention.Among the 5th embodiment, load coil 40 is divided into three of inner coil 40a, intermediate coil 40b, outer coil 40c, inner coil 40a, outer coil 40c are positioned at same section, and will the intermediate coil 40b between them be configured on one section the position of descending among Figure 10, become 2 sections formation.Thereby load coil support 41 corresponding above-mentioned formations are formed with the shape of recess with the residing part of intermediate coil 40b, above intermediate coil 40b, dispose infrared heater support 17 and the infrared heater 19 the same with the 1st embodiment.In addition, below load coil support 41, configuration ferrite 42a, 42b, 42c.In addition, infrared heater 19 constitutes heating unit 64 with coil 40.
According to the 5th embodiment of above-mentioned formation, because the part of load coil 40 is the lower side that 40b partly is configured in infrared heater 19.Increase the number of turn of load coil 40 so can not account for configuration space.
(the 6th embodiment)
Figure 11 is the 6th embodiment of the present invention, and the 6th embodiment is an example of the control form among the 1st embodiment being done some distortion and enforcement.That is, Figure 11 and Fig. 4 are suitable, but deletion step S5～S9 when being judged as " NO " among the step S3, just moves on to step S10.Thereby,, just all carry out the infrared ray heating with infrared heater 17 if at this moment the material of cooking-vessel 8 is not the such high resistance material of iron.
When using the 6th embodiment of above-mentioned formation, also can obtain the effect identical in fact with the 1st embodiment.
The present invention is not only limited to the described embodiment of above-mentioned accompanying drawing, below such distortion be possible.
In infrared heater support 17 grades, employing has as the material of the heat conduction that infrared heater 19 is taken place to the character of the heat-barrier material of load coil 6 and load coil support 13 sides, perhaps, employing has as the material that makes described heat reflection to the character of the reflecting plate of top board 3 sides, in addition, adopt and to have the material of characteristic that has influence on the magnetic screen of infrared heater 19 sides as the magnetic flux that load coil 6 is taken place.The also material of available suitable composite attribute as required.
Also can constitute and make the weight that detects cooking-vessel, when middle resistance material, the ratio that heats according to the Weight control induction heating and the heater of cooking-vessel.
When the such low resistance material of aluminium, also can in the scope that does not produce " pot floats " phenomenon, carry out induction heating (that is, being willing to the identical control of Fig. 5 of 2004-248371) in the lump with the spy.In addition, what is called " specially " in " when the material of judgement is the low resistance material; be controlled to specially to described energized components supply power " of claim 2, for example comprising does not have the level of contribution in fact simultaneously to high-frequency current supply part side supply power with the heating to the low resistance material yet.
In addition,, also can change the quantity of power of supplying with separately, heat inverter 24, heater energising control part 28 even do not control the ratio of induction heating and infrared ray heating.
Temperature detection part also can constitute with infrared ray sensor.
In addition, also can detect load coil, infrared heater or with the temperature of certain part of their temperature correlation, or add thermal control, or carry out temperature and cross and rise control.
The material of cooking-vessel is not limited to the heating device side and automatically judges, also can be that for example the user imports material and sets.
Claims (9)
1. heating device is characterized in that having:
Housing;
Constitute the upper surface of this housing and the top board of mounting cooking-vessel;
Have the load coil that the efficiency of heating surface is well constituted, and with the annular infrared heater of infrared radiation, and can heat described cooking-vessel by at least one side wherein and the heating unit that disposes;
Be configured in the inboard of the ring of described exothermal infrared body formation, the temperature detection part that the temperature of detection cooking-vessel is used;
Between this temperature detection part and described infrared heater, stop the baffle of the infrared radiation of this infrared heater radiation to described temperature detection part;
High-frequency current is supplied with the high-frequency current supply part of described load coil;
Described infrared heater is switched on and the energized components of the usefulness of generating heat; And
By controlling the power of supplying with described high-frequency current supply part and described energized components respectively, control is to the heating control section part of described cooking-vessel heating.
2. heating device as claimed in claim 1 is characterized in that,
The material judging part that possesses the material of judging cooking-vessel,
When the material that described heating control section part is judged at described material judging part is the low resistance material, be controlled to specially to described energized components supply power.
3. heating device as claimed in claim 1 or 2 is characterized in that,
Configuration load coil and infrared heater, the feasible lower face side that all faces top board.
4. heating device as claimed in claim 3 is characterized in that,
Load coil is configured in the center side of heating unit.
5. heating device as claimed in claim 3 is characterized in that,
Infrared heater is configured in the center side of heating unit.
6. heating device as claimed in claim 3 is characterized in that,
Be divided into a side who disposes in load coil and the infrared heater a plurality ofly, alternately dispose both simultaneously.
7. heating device as claimed in claim 6 is characterized in that,
Infrared heater is configured between 2 load coils.
8. heating device as claimed in claim 1 is characterized in that,
The coiling load coil makes at least a portion form multistage.
9. heating device as claimed in claim 1 is characterized in that,
Load coil at least a portion is configured in the lower side of infrared heater.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005007761 | 2005-01-14 | ||
| JP2005007761A JP4342451B2 (en) | 2005-01-14 | 2005-01-14 | Cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1809229A true CN1809229A (en) | 2006-07-26 |
| CN100531480C CN100531480C (en) | 2009-08-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100048379A Expired - Fee Related CN100531480C (en) | 2005-01-14 | 2006-01-13 | Heating cooker |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4342451B2 (en) |
| KR (1) | KR100831458B1 (en) |
| CN (1) | CN100531480C (en) |
| TW (1) | TW200640300A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105380497A (en) * | 2014-08-22 | 2016-03-09 | 松下知识产权经营株式会社 | Superheated steam generating device and cooking device |
| CN106813271A (en) * | 2015-11-27 | 2017-06-09 | 佛山市顺德区美的电热电器制造有限公司 | A kind of low-power laser heating electromagnetic oven |
| CN106813269A (en) * | 2015-11-27 | 2017-06-09 | 佛山市顺德区美的电热电器制造有限公司 | A kind of electromagnetic heating apparatus |
| CN109874181A (en) * | 2017-12-05 | 2019-06-11 | 佛山市顺德区美的电热电器制造有限公司 | The control method of heating platform and heating platform |
| CN109936882A (en) * | 2017-12-15 | 2019-06-25 | 佛山市顺德区美的电热电器制造有限公司 | Method for heating and controlling, device, heating utensil and computer readable storage medium |
| CN109936881A (en) * | 2017-12-15 | 2019-06-25 | 佛山市顺德区美的电热电器制造有限公司 | Method for heating and controlling, heating control apparatus and heating utensil |
| CN112248289A (en) * | 2019-07-22 | 2021-01-22 | 财团法人精密机械研究发展中心 | Infrared ray material drying machine |
| CN112352468A (en) * | 2018-06-14 | 2021-02-09 | 三菱电机株式会社 | Induction heating cooker |
| US10976055B2 (en) * | 2015-11-27 | 2021-04-13 | Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co., Ltd. | Electromagnetic heating device |
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| TWI415729B (en) * | 2009-02-27 | 2013-11-21 | 私立中原大學 | Mold with the uniform heating and cooling structure |
| JP5147773B2 (en) * | 2009-03-30 | 2013-02-20 | 三菱電機株式会社 | Electromagnetic cooker |
| CN104206005B (en) * | 2012-03-22 | 2015-12-02 | 三菱电机株式会社 | Induction heating cooking instrument |
| CN204707300U (en) * | 2012-08-29 | 2015-10-14 | 三菱电机株式会社 | Induction heating cooking instrument |
| CN110876213B (en) * | 2018-09-03 | 2021-12-17 | 佛山市顺德区美的电热电器制造有限公司 | Control method and system of heating device and cooking appliance |
| JP7486347B2 (en) | 2020-05-19 | 2024-05-17 | 三菱電機株式会社 | Induction Cooker |
| KR102468069B1 (en) * | 2020-12-31 | 2022-11-18 | 재경전광산업 주식회사 | Temperature control apparatus |
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| JPH09135771A (en) * | 1995-11-15 | 1997-05-27 | Matsushita Electric Ind Co Ltd | Rice cooker |
| JPH11126682A (en) * | 1997-10-24 | 1999-05-11 | Toshiba Corp | Electromagnetic cooking device |
| JP2003249341A (en) * | 2002-02-26 | 2003-09-05 | Matsushita Electric Ind Co Ltd | Induction heating cooker |
| KR20040010014A (en) * | 2002-07-19 | 2004-01-31 | 미츠비시덴키 가부시키가이샤 | An inductive heating appliance for cooking |
| JP3975865B2 (en) * | 2002-08-30 | 2007-09-12 | 松下電器産業株式会社 | Induction heating cooker |
| JP4077285B2 (en) * | 2002-09-13 | 2008-04-16 | 三菱電機株式会社 | Cooker |
| JP3465712B2 (en) * | 2002-10-11 | 2003-11-10 | 松下電器産業株式会社 | Induction heating device |
| JP4331071B2 (en) * | 2004-08-27 | 2009-09-16 | 株式会社東芝 | Cooker |
-
2005
- 2005-01-14 JP JP2005007761A patent/JP4342451B2/en active Active
-
2006
- 2006-01-02 TW TW095100039A patent/TW200640300A/en unknown
- 2006-01-13 CN CNB2006100048379A patent/CN100531480C/en not_active Expired - Fee Related
- 2006-01-13 KR KR1020060003740A patent/KR100831458B1/en active IP Right Grant
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105380497B (en) * | 2014-08-22 | 2019-03-08 | 松下知识产权经营株式会社 | Superheated steam generation device and cooker |
| CN105380497A (en) * | 2014-08-22 | 2016-03-09 | 松下知识产权经营株式会社 | Superheated steam generating device and cooking device |
| CN106813269B (en) * | 2015-11-27 | 2020-06-19 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating equipment |
| CN106813271A (en) * | 2015-11-27 | 2017-06-09 | 佛山市顺德区美的电热电器制造有限公司 | A kind of low-power laser heating electromagnetic oven |
| CN106813269A (en) * | 2015-11-27 | 2017-06-09 | 佛山市顺德区美的电热电器制造有限公司 | A kind of electromagnetic heating apparatus |
| US10976055B2 (en) * | 2015-11-27 | 2021-04-13 | Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co., Ltd. | Electromagnetic heating device |
| CN106813271B (en) * | 2015-11-27 | 2019-07-30 | 佛山市顺德区美的电热电器制造有限公司 | A kind of low-power laser heating electromagnetic oven |
| CN109874181A (en) * | 2017-12-05 | 2019-06-11 | 佛山市顺德区美的电热电器制造有限公司 | The control method of heating platform and heating platform |
| CN109936881A (en) * | 2017-12-15 | 2019-06-25 | 佛山市顺德区美的电热电器制造有限公司 | Method for heating and controlling, heating control apparatus and heating utensil |
| CN109936882A (en) * | 2017-12-15 | 2019-06-25 | 佛山市顺德区美的电热电器制造有限公司 | Method for heating and controlling, device, heating utensil and computer readable storage medium |
| CN109936882B (en) * | 2017-12-15 | 2021-07-13 | 佛山市顺德区美的电热电器制造有限公司 | Heating control method, heating control device, heating appliance and computer-readable storage medium |
| CN112352468A (en) * | 2018-06-14 | 2021-02-09 | 三菱电机株式会社 | Induction heating cooker |
| CN112352468B (en) * | 2018-06-14 | 2023-07-07 | 三菱电机株式会社 | Induction heating cooker |
| CN112248289A (en) * | 2019-07-22 | 2021-01-22 | 财团法人精密机械研究发展中心 | Infrared ray material drying machine |
| CN112248289B (en) * | 2019-07-22 | 2022-10-11 | 财团法人精密机械研究发展中心 | Infrared material drying machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4342451B2 (en) | 2009-10-14 |
| KR100831458B1 (en) | 2008-05-21 |
| CN100531480C (en) | 2009-08-19 |
| JP2006194539A (en) | 2006-07-27 |
| KR20060083151A (en) | 2006-07-20 |
| TW200640300A (en) | 2006-11-16 |
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