Embodiment
Below, with reference to accompanying drawing embodiments of the present invention are elaborated.
Fig. 1 to Fig. 5 represents embodiments of the invention 1.At first, Fig. 1 is illustrated in the stereoscopic figure of the state of the heating device 2 of packing on the cabinet 1 in kitchen.Among this Fig. 1, the main body 3 of heating device 2 is deposited in the storage part 4 that is arranged on cabinet 1.Baking box 5 is established on the left side of main body 3, and operating portion 6 is established on the right.A plurality of switches are set on the operating portion 6.
On the top of main body 3, as shown in Figure 2, top heating unit 10 is set.This top heating unit 10 is in the upper tank shell 11 of the rectangular box shape of upper surface open, the configuration induction heating is with left heater coil 12 and right heater coil 13 respectively, simultaneously, be positioned at central portion rear portion one side, the central heater 14 that configuration for example is made up of pharoid.In the upper surface open portion of top heating unit 10, the top board of heat resistant glass system is set, so that cover above-mentioned heater coil 12,13 and heater 14 from the top.
Make top board 15 be positioned at the top of left and right sides heater coil 12,13 and central heater 14, be respectively circular heating part 16,17,18.And heater coil about making on the structure 12,13 is according to the state on the heating part 16,17 of being positioned over the cooking-vessel control of switching on, thereby this cooking-vessel is carried out induction heating.In addition, the structure of central heater 14 is made, and according to the state on the heating part 18 of being placed on the cooking-vessel control of switching on, this cooking-vessel is heated.Left and right sides heater coil 12,13 and central heater 14 constitute heater block respectively
Front portion in above-mentioned upper tank shell 11, front at left and right sides heater coil 12,13, firepower display part 20,21 with a plurality of LED (light-emitting diode) 19 is set respectively, simultaneously, the high temperature with LED19 is set and notes display part 22, fluorescent display tube 23 between left and right sides heater coil 12,13.Thereby above-mentioned firepower display part 20,21, high temperature display part 22 and fluorescent display tube 23 are configured in the below of above-mentioned top board 15.Each firepower display part 20,21 is configured to the periphery of the heating part 16,17 of edge correspondence in fact.In this case, for example form the film of titanium on the back side that constitutes substantially transparent glass ceramics (lower surface) of top board 15, become translucent with sputter.This top board 15 has branch light transmission characteristic as described later in the visible region.
Fig. 4 represents the concrete demonstration example of above-mentioned fluorescent display tube 23.Represent all states of luminous demonstration of all display parts among Fig. 4.As the displaying contents of fluorescent display tube 23, be specially the expression left and right sides heater coil 12,13 and the user mode display part 24 of central heater 14 user modes, the display part 25 of heating up water, cooking display part 26, fried display part 27, the display part 28 of cooking, baking box display part 29, firepower display part 30 (baking box and central heater are public).In this case, the Show Color as above-mentioned each display part 24~30 can use redness and blueness.
Also have, though not shown, lower surface one side in the above-mentioned heating part 16,17 of top board 15 is provided with temperature sensor.In addition, though not shown, the inside in aforesaid operations portion 6 is provided with the control device with microcomputer.This control device is according to the detection signal of the operation signal of the switch 7 of operating portion 6, said temperature transducer, and the control program got ready in advance, control the heater blocks such as heater (not shown) of above-mentioned left and right sides heater coil 12,13, central heater 14 and baking box 5, simultaneously, has the function that control above-mentioned firepower display part 20,21, high temperature are noted display part 22 and fluorescent display tube 23.
In the above-described configuration, the structure of firepower display part 20,21 is made and can be shown the firepower size of corresponding heater coil 12,13 according to the luminous number of LED.High temperature is noted display part 22 in the detected temperatures of temperature sensor during greater than design temperature, luminous demonstration.In addition, fluorescent display tube 23 utilizes luminous, shows various displaying contents.
Here, Fig. 5 represents the light transmission rate of top board.Among Fig. 5, characteristic line A is the characteristic line of the top board 15 (handling through the sputter titanizing) of relevant present embodiment.(about 400~700nm), the spectrophotometric transmittance of the 700nm suitable with redness becomes than big with the spectrophotometric transmittance of blue or green suitable 500nm in fact in visible region in light.
In the above-described embodiment, adopt fluorescent display tube 23 as the display unit that is arranged on top board 15 belows.Fluorescent display tube 23 is the anode light element.Compare because the visual angle is wide with LCD, the height of brightness simultaneously is so its advantage is that no matter from oblique upper, in addition, the state or the operating portion 6 of the cooking seen on the limit, can both see demonstration easily.And because top board 15 is translucent, though can see the luminous displaing part of fluorescent display tube 23 clearly, non-luminous part is difficult to see clearly.Therefore, only show required part, simultaneously, be difficult to see part not that so quite hommization in design concept, simultaneously, displaying contents is more clear.
Above-mentioned top board 15 as shown in Figure 5 because in the visible region, the in fact spectrophotometric transmittance of 700nm suitable with redness becomes than big with the spectrophotometric transmittance of blue or green suitable 500nm in fact.So have following characteristics.That is to say that fluorescent display tube is from the big several times of the brightness ratio redness of the luminous efficiency of fluorophor, blueness, green-series.Therefore, for top board 15 as previously discussed, in the visible region, the spectrophotometric transmittance that makes the in fact 700nm suitable with redness is than big with the spectrophotometric transmittance blue or 500nm in fact that green is suitable, by like this, the low redness of brightness, still the high blueness of brightness or green in fact in the same manner (brightness of all kinds in fact equably) luminous, like this, watch be more prone to, also hommization of design concept.
Again, because the demonstration that the demonstration of fluorescent display tube 23 also can illustrating property, so displaying contents is more prone to understand.
Have again,, therefore just can show an above-mentioned left side and right two heater coils 12,13 at 1 place because fluorescent display tube 23 is configured between two left and right sides adjacent left side and right heater coil 12,13.
In addition, the firepower display part 20,21 of heater coil 12,13 and high temperature notice that display part 22 is not to show by fluorescent display tube 23, but show by LED19.Especially for the high temperature of the demonstration of carrying out relevant safety note display part 22 by useful life than fluorescent display tube height, LED19 low in energy consumption, can improve fail safe and save power consumption when showing.That is to say, and be about 8000 hours the useful life of fluorescent display tube, compare about power consumption 3W that be about 5000~100000 hours, power consumption 100mw the useful life of LED.
In the above-described embodiments, top board 15 forms the film of titanium at the back side of glass ceramics, also can for example form metallic films such as silicon, and translucent formation replaces.Have again, can adopt painted glass ceramics, for example the formation of the glass ceramics of brown.The characteristic line B of Fig. 5 represents the characteristic line of painted glass ceramics.On this characteristic line B, in the visible region since the spectrophotometric transmittance of the in fact 700nm suitable with redness greater than with the spectrophotometric transmittance of blue or green suitable 500nm in fact, so can obtain the action effect same with the situation of characteristic line A.
In addition, be translucent formation for top board, also can below transparent top board, filter be set.When above-mentioned formation, setting under the situation of filter, as mentioned above, preferably it constitutes, in the visible region, the spectrophotometric transmittance of the in fact 700nm suitable with redness greater than with the spectrophotometric transmittance of blue or green suitable 500nm in fact.
The invention is not restricted to above-mentioned present embodiment, can be out of shape as described below or expand.
As heating device, be not limited to be contained in the fixing pattern of interior dress in the cabinet in kitchen, also be applicable to be placed on the platform and use.
As a kind of heater block that is arranged on top board 15 belows, be not limited to heater coil 12,13, central heater 14 that induction heating is used, also can be gas heater.
Fig. 6 to Figure 11 represents embodiments of the invention 2.At first, Fig. 9 is illustrated in pack into stereoscopic figure under the state in the cabinet in kitchen of heating device 102.In addition, Figure 10 is the vertical view of major part under the state of removing top board.The main body 103 of heating device 2 is deposited in the storage part 104 that is arranged in the cabinet 101.On the left side of main body 103 baking box 105 is set, the right setting operation portion 106.Operating portion 106 is provided with a plurality of switches 107.
On the top of main body 103, top heating unit 110 as shown in figure 10 is set.Constituting of this top heating unit 110, left heater coil 12 that induction heating is used and right heater coil 13 are configured in about respectively in the upper tank shell 111 of rectangular box shape of upper surface open, the central heater 114 that to for example be made up of pharoid is configured in rear portion one side of central portion simultaneously, peristome is provided with the top board 115 of heat resistant glass system in the above, so that cover above-mentioned coil 112,113 and heater 114 from the top.
On top board 115, above left and right sides heater coil 112,113 and central heater 114, show circular heating part 116,117,118 respectively.And, left and right sides heater coil 112,113 is according to the control of switching on of cooking-vessel the state on the heating part 116,117 of being placed on, to this cooking-vessel induction heating, in addition, central heater 114 is according to the control of switching on of cooking-vessel the state on the heating part 118 of being placed on, at this point to this cooking-vessel heating.
Front portion in upper tank shell 111, front at left and right sides heater coil 112,113, firepower display part 120,121 with a plurality of LED (light-emitting diode) 19 is set respectively, simultaneously, between left and right sides heater coil 112,113, the high temperature with LED119 is set notes display part 122, fluorescent display tube 123.Thereby above-mentioned firepower display part 120,121, high temperature display part 122 and fluorescent display tube 123 are configured in the below of above-mentioned top board 115.Each firepower display part 120,121 is configured to the periphery of the heating part 116,117 of edge correspondence in fact.In this case, for example form for example film of titanium of metal on the back side that constitutes substantially transparent glass ceramics (lower surface) of top board 115, become translucent formation, have branch light transmission characteristic in the visible region with sputter.
Figure 11 represents the concrete demonstration example of above-mentioned fluorescent display tube 123.Represent all states of luminous demonstration of all display parts among Figure 11.As the displaying contents of fluorescent display tube 123, the expression left and right sides heater coil 112,113 and the user mode display part 124 of central heater 114 user modes, the display part 125 of heating up water, cooking display part 126, fried display part 127, the display part 128 of cooking, baking box display part 129, firepower display part 130 (baking box and central heater are public) are arranged specifically.In this case, as the Show Color of above-mentioned each display part 124~130, can use redness and blueness.
In addition, the inside in aforesaid operations portion 6, though not shown, the control device with microcomputer is set.This control device is according to the detection signal of the operation signal of the switch 107 of operating portion 106, said temperature transducer, and the control program got ready in advance, control the heater blocks such as heater (not shown) of above-mentioned left and right sides heater coil 112,113, central heater 114 and baking box 105, simultaneously, has the function that control above-mentioned firepower display part 120,121, high temperature are noted display part 122 and fluorescent display tube 123.
In the above-described configuration, the structure of firepower display part 120,121 is made and can be shown the firepower size of corresponding heater coil 112,113 according to the luminous number of LED.High temperature is noted display part 122 in the detected temperatures of temperature sensor during greater than design temperature, luminous demonstration.In addition, fluorescent display tube 123 utilizes luminous, shows various displaying contents.
Fig. 6 is for vertically cutting front view open near the top board 115.A side below heating part 116,117, the central part place of heater coil 112,113 is provided with temperature sensor 131,132.Heater coil 112,113 is configured to be placed on the state of supporting on the platform 133,134 in addition.A side below support platform 133,134, many bar-shaped ferrites (high permeability body) 135,136 are radial configuration respectively.
And the fluorescent display tube 123 between left and right sides heater coil 112,113 supports by the left and right sides support member 138,139 that is fixed in printed circuit board (PCB) 137 erect to be set, make its from about clamp.In addition, Fig. 7 represents along the section (side) of the 7-7 line of the fluorescent display tube shown in Fig. 6 123.
As above-mentioned shown in Figure 7, fluorescent display tube 123 forms inner distribution on glass substrate 123f, also dispose fluorophor 123h, via hole 123i, insulating coating film 123j, anode electrode 123k etc. simultaneously, disposes grid 123c above it.Configuration filament 123e on grid 123c.Both ends, the left and right sides are erect to be provided with and separated glass 123o, 123p in Fig. 7 of glass substrate 123f, and are fixed thereon by display surface glass 123d placement, thereby form the container of box-shaped.And after utilizing the steam vent 123q that is arranged on glass substrate 123f that air is discharged, with seal cover 123l the sealing with sintered frit 123n is passed through in steam vent 123q sealing, thereby internal tank is a high vacuum state.
Inner surface of container one side at display surface glass 123d disposes transparent conducting film 123m.In addition, guide feet 123a is connected with inner distribution 123g, and after this guide feet 123a passed and separates glass 123o and cause the outside, curved downwards 90 degree were connected with printed circuit board (PCB) 137.Also have, that separates glass 123o passes part also with sintered frit 123b sealing.And between filament 123e and anode electrode 123k, for example add direct voltage about 30V, make that fluorophor 123h is luminous to be shown.
In above-mentioned, guide feet 123a, grid 123c, seal cover 123l for example constitute with magnetic metal materials such as iron-nickel-chromiums.Here referring again to Fig. 6, fluorescent display tube 123 is positioned at position below also wanting than the upper surface of ferrite 135,136 at the upper end position that is configured to above-mentioned magnetic metal material on the above-below direction.
Below, describe with reference to the effect of 8 pairs of present embodiments of accompanying drawing.Configuration fluorescent display tube 123 in side's under the top board 115, by carrying out demonstration as shown in figure 11, under the luminous situation of fluorescent display tube 123 display parts, its display light sees through the eyes that translucent top board 115 arrives the user, and the user can see its demonstration clearly easily by top board 115.In addition, as for the part beyond fluorescent display tube 123 display parts, even extraneous light sees through translucent top board 115, owing to its reverberation can not return, so the user can't see clearly.That is to say, for the user, owing to only allow it see the part of desire clearly to its demonstration, so very hommization of the design concept of induction heating.
Have, fluorescent display tube 123 makes in fact all corresponding color (purple: the 400nm~red: 700nm) luminous of light belt with visible light according to the material of the fluorophor that constitutes anode again.Therefore, become translucent minute light transmission characteristic by top board 115 is had in the visible region, thereby can show with polychrome.In addition, fluorescent display tube 123 is according to the luminous efficiency of fluorophor, and indigo plant, green-series are than the big several times of red series.Therefore, if the spectrophotometric transmittance of 700nm in fact that will be suitable with redness on top board 115 is set for than big with the spectrophotometric transmittance of blue, green suitable 500nm in fact, then can make brightness of all kinds impartial in fact.
In addition, the magnetic metal material configuration that constitutes fluorescent display tube 123 becomes to be positioned at than the upper surface of ferrite 135,136 also wants the position of below, thereby plays following effect.For example as shown in Figure 1, be placed under the situation of induction heating on the heating part 116 at the bowl 140 that magnetic material is made, by the logical high-frequency current of heater coil is produced alternating magnetic field, major part is passed through the end of pot 140 as magnetic circuit above top board 115, after this, downward while expanding in atmosphere.And major part is passed through ferrite 135 as magnetic circuit below top board 115, after this makes progress while expanding in atmosphere.
Thereby when fluorescent display tube 123 being configured to when the top board 115, the magnetic line of force that part will make progress is added on the metal material that constitutes fluorescent display tube 123, can imagine that can be to their induction heating and temperature rises.Here, if the temperature of the guide feet 123a of fluorescent display tube 123 or seal cover 123l rises, then sintered frit 123b, 123n soften because of temperature rise, airtightly lose sealing, the hot electron generation internal discharge that filament 123e produces, fluorophor 123h can disperse, filament 123e can break.
In addition, hot electron such as no show fluorophor 123h can not produce then that self is luminous.Have again,,, worsen the speed that brightness reduces during accelerated luminescence because of being heated so quicken the performance of fluorophor 123h because the temperature of the fluorophor 123h of close this grid 123c also rises if the temperature of grid 123c rises.According to the above, in the present embodiment, the upper surface that the metal material that constitutes fluorescent display tube 123 is configured to be positioned at than ferrite 135,136 is also wanted the position of below, thus can try one's best prevent since the AC magnetic field that heater coil 112,113 produces to their induction heating.
Here, be specially and make fluorescent display tube 123 be positioned to a certain degree lower position, for example as shown in Figure 8, can do quantitative evaluation to a certain extent.As shown in Figure 1, the left and right directions distance that is set in 136 on the guide feet 123a of fluorescent display tube 123 end positions and ferrite is D2 for the distance between the grid 23c of D1, ferrite 36 upper surfaces and fluorescent display tube 23.
And, as mentioned above, when pot 140 grades are carried out induction heating, with below one side of top board 115, to be that the ambient temperature of induction heating cooking instrument body interior is for example the highest rise to 60 ℃.In addition, since the alternating magnetic field that heater coil 112,113 produces, hardware how many sensed heating of fluorescent display tube 123, and therefore, the temperature section that is set at the permission rising is below 10 ℃.
In fact, the left and right directions distance D 1 that fluorescent display tube 123 and heater coil are 112,113 also influences the degree of induction heating, difficult labour is living more to increase this distance D 1 induction heating, but bigger as if distance D 1 is obtained, and then only the size of fluorescent display tube 123 will be reduced with regard to this part heart.Thereby for example its limit is set at 20mm, if make it be changed to D1=10mm, 5mm, then the rising degree of temperature improves.
That is to say, as shown in Figure 8, establish the relative datum value (± 0) of above-below direction distance D 2 for regulation, and when getting D1=10mm, if the temperature rising part that causes because of induction heating is 10 ℃ just, then be set at D1=20mm, can shortening D2 (, on), when being set at D1=5mm, distance D 2 must be obtained longer (+, down), as mentioned above, the relation that permission temperature rise part that causes according to induction heating and distance D are 1,52 can be according to the relation of separately design setting the best.
In addition, be different from above-mentioned setting, fluorescent display tube 123 is configured to surface one side of display surface glass 123d and leaves top board 115 lower surfaces more than or equal to 2mm.When for example the bowl that will increase weight etc. is placed on the top board 115, produce deflection on top board 115 last moments ground after the user will add entry.Therefore, leave more than or equal to 2mm, thereby even when top board 115 1 sides produce deflection, still can avoid this part to contact with display surface glass 123d by making both.
In above said present embodiment, its structure is made, ferrite 135,136 is configured in heater coil 112,113 belows, fluorescent display tube 123 is configured in the below of the top board 115 of trnaslucent materials formation, and at least a portion is positioned at the position of also wanting the below than the upper surface position of ferrite 135,136 in the hardware of formation fluorescent display tube 123.
Thereby, utilize fluorescent display tube 123 to show on high brightness ground, even the part that shows of top board 115 is translucent, still can see demonstration easily clearly.In addition, the angle of visibility of the such angle limitations of fluorescent display tube 123 no LCD, demonstration is big, and the design concept of induction heating cooking instrument fully takes into account user's convenience.And, below top board 115, because sending back into the magnetic flux of top board 115 tops from the side of ferrite 135,136 does not almost have influence to fluorescent display tube 123, so can avoid to the unnecessary induction heating of fluorescent display tube 123, the life-span of assurance fluorescent display tube 123.
In addition, because make the upper end position of the guide feet 123a that constitutes fluorescent display tube 123 be positioned at the position of also wanting the below than the upper surface position of ferrite 135,136, so can prevent that to bigger inscape in the hardware that constitutes fluorescent display tube 123 be the induction heating of guide feet 123, can avoid temperature to rise preferably.Have again,,, keep the good gas-tight seal of fluorescent display tube 123 so can prevent induction heating to seal cover 123l and sintered frit 123n because of the seal cover 123l of fluorescent display tube 123 is configured in the glass substrate 123f of a following side.
In addition, with constituting surface one side of the display surface glass 123d of fluorescent display tube 123, be configured to leave top board 115 lower surfaces more than or equal to 2mm, even when top board 115 1 sides produce deflection, still can avoid this part to contact, prevent fluorescent display tube 123 faults with display surface glass 123d.
The invention is not restricted to the foregoing description, following distortion also is possible.
The filament 123e that comprises fluorescent display tube 123 also can be arranged on the position of also wanting the below than the upper surface position of ferrite 135,136.
The setting of Fig. 8 is an example after all, can individually do suitably change and enforcement according to the condition of imagination.
The high permeability body is not limited to ferrite 135,136, can select the suitable material of high permeability for use.
The formation of fluorescent display tube 123 can be configured in display surface glass 123d inner surface one side with fluorophor 123h, anode electrode 123k, insulating coating film 123j, inner distribution 123g etc.
Have at top board 115 under the situation of enough rigidity, needn't make lower surface that the surface of fluorescence display surface glass 123d leaves top board 115, both are close together more than or equal to 2mm.
It is shown in Figure 9 to adopt the configuration of the display part of fluorescent display tube 123 to be not limited to, for example also configurable at top board 115 the bight or heating part 116,117 between etc.