CN101616517A - The electrification method of electrical network power source of heating device and heating device - Google Patents
The electrification method of electrical network power source of heating device and heating device Download PDFInfo
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- CN101616517A CN101616517A CN200910146350A CN200910146350A CN101616517A CN 101616517 A CN101616517 A CN 101616517A CN 200910146350 A CN200910146350 A CN 200910146350A CN 200910146350 A CN200910146350 A CN 200910146350A CN 101616517 A CN101616517 A CN 101616517A
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Abstract
The object of the present invention is to provide: though undertaken by control circuit with mains switch with slight contact constitute the control of the power-supply system of supplying with to each one the time, also can not make circuit constitute complicated and carry out the heating device and the electrification method of electrical network power source thereof of automatic anti-fault countermeasure.Power connection switch (9) and power supply cut-off switch (10) are made of the switch of prompt type.Be provided with the opening operation test section (36) of the mode of operation of the making operation test section (35) of the mode of operation that detects power connection switch (9) and detection power supply cut-off switch (10).To drive signal from the inverter of control microcomputer (33) output and allow that via vibration circuit (49) offers inverter circuit (30,31).Vibration allows that circuit (49) is allowed according to the mode of operation of power supply cut-off switch (10) or the transmission of disables inverter drive signal.
Description
Technical field
The present invention relates to possess and be used to make the heating device of being established by cable the power operation portion of beginning and stopping of electric network source and the electrification method of electrical network power source of this heating device.
Background technology
The heating device that uses induction heating, electric heater (electrical fire) that the heating object of pot etc. is heated and cook, have and do not use fire, possess the advantage of temperature controlled function etc. safely, popularize fast as the induction heating cooking heater that is assembled into system's kitchen tools (custom kitchen) (induction-heating cooking heater).In such heating device, be provided with the mains switch (power on/off switch) that is used for electric network source is subjected to electricity, the many uses of this mains switch are mechanical.
But, common mechanical type mains switch, the certain above power of its action need is so operability is good inadequately.Therefore, can consider to use for example as sensitive switch (microswitch), promptly can operate with slight contact, work (momentarily operating) at once, that is, can self-recovery after operation to the switch (switch) (for example with reference to patent documentation 1) of initial condition.In addition, the heating device that patent documentation 1 is put down in writing, under the situation that power supply cut-off switch (power-off switch) has been operated, no matter the state of a control of control part (microcomputer) how, can both force to stop the heating work that heating arrangements carried out of heater coil, electric heater etc.That is, for the electronic unit of microcomputer of control part etc. break down or situation out of control under automatic anti-fault countermeasure (fail-safe measure), consider to some extent.
Patent documentation 1: TOHKEMY 2007-200657 communique
But the heating device that patent documentation 1 is put down in writing constitutes, and forms the holding circuit be applied in electric network source, detects the mode of operation of power supply cut-off switch accordingly with the hold mode of this holding circuit.And in order to form this holding circuit, a plurality of relays (relay) of power on/off can be directly carried out in use to electric network source.Therefore, above-mentioned heating device, its circuit constitutes complicated, has the high shortcoming of cost.
Summary of the invention
The present invention In view of the foregoing makes, its purpose is, provide a kind of:, also can not make circuit constitute complicated and carry out the heating device of automatic anti-fault countermeasure and the electrification method of electrical network power source of this heating device even undertaken by control part with the constituting under the situation of each of mains switch with slight contact for the control of the power-supply system of power supply power.
Heating device of the present invention is characterized in that, possesses: the heating arrangements that heats; The control part that the heating that described heating arrangements carried out is controlled; By electric network source generation work with power supply and the power supply unit supplied with to described control part; Power connection switch (power-on switch) is carried out operation in order to begin being subjected to electricity of described electric network source, form first supply path from described electric network source to described power supply unit under its mode of operation; The making operation test section (turn-on operation detecting section) that the mode of operation of described power connection switch is detected; Controlled the self-sustaining mechanism of the "on" position of second supply path that maintenance and described first supply path are arranged in parallel from described electric network source to described power supply unit by described control part; The power supply cut-off switch is carried out operation in order to stop being subjected to electricity of described electric network source, can the output function signal under its mode of operation; With when when described power supply cut-off switch is exported described operation signal, forbid that mechanism is forbidden in the heating of the heating undertaken by described heating arrangements.
In addition, the electrification method of electrical network power source of heating device of the present invention, this heating device possesses: the heating arrangements that heats; The control part that the heating that described heating arrangements carried out is controlled; By electric network source generation work with power supply and the power supply unit supplied with to described control part; The power connection switch is operated in order to begin being subjected to electricity of described electric network source, forms first supply path from described electric network source to described power supply unit under its mode of operation; The making operation test section that the mode of operation of described power connection switch is detected; Controlled the self-sustaining mechanism of the "on" position of second supply path that maintenance and described first supply path are arranged in parallel from described electric network source to described power supply unit by described control part; The power supply cut-off switch is operated in order to stop being subjected to electricity of described electric network source, can the output function signal under its mode of operation; Forbid mechanism with the heating of the heating of forbidding perhaps being undertaken by described heating arrangements, this electrification method of electrical network power source is characterised in that: when described power connection switch is operated, described power supply unit generation work is supplied with power supply and to described control part, described control part is accepted described work and is started working with the supply of power supply, and described self-sustaining mechanism begins being subjected to of described electric network source with hold mode; When described power supply cut-off switch was operated, the heating that mechanism disables is undertaken by described heating arrangements was forbidden in described heating, and described control part is removed the hold mode of described self-sustaining mechanism, stops to be subjected to of described electric network source.
According to the present invention, power connection switch and power supply cut-off switch are by constituting with the switch that slight contact is operated, so the operability of mains switch improves.And, even break down at control part, under the situation out of control, as long as the operating power cut-off switch just can stop to heat forcibly.That is, it is complicated that circuit is constituted, and carry out the automatic anti-fault countermeasure.
Description of drawings
Fig. 1 is the block diagram that the electricity of the heating device of expression expression an embodiment of the invention constitutes.
Fig. 2 is the figure that at length represents the formation relevant with induction heating work.
Fig. 3 is the figure that at length represents the formation relevant with heater heats work.
Fig. 4 is the stereoscopic figure of heating device.
Description of reference numerals
1 heating device, 5,6 load coils (heating arrangements)
7 electric heaters (heating arrangements), 8 operating surface boards (operating portion)
9 power connection switches, 10 power supply cut-off switch, 33 control microcomputers (control part)
34 power circuits (power supply unit), 35 making operation test sections, 36 opening operation test sections,
43DC (direct current) relay (self-sustaining mechanism) 44 constitutes the cooling fan of cooling device
49 vibrations allow that circuit (mechanism is forbidden in heating) 55 heater heats allow circuit (mechanism is forbidden in heating) 60 optical couplers 71 capacitors (noise filter portion)
Embodiment
Below, for an embodiment of the invention, describe with reference to accompanying drawing.
Fig. 4 is the stereogram of outward appearance of heating device of representing to be assembled into the state of cooking table.Heating device 1 comprises: be received upon the rectangular box shape in the peristome 2a of cooking table 2 housing 3 and with the mode of the upper surface of covering shell 3 install, with the top board (top plate) 4 of heat resistant glass (heat-resistant glass) system of the state configuration on cooking table 2, exposed.
In housing 3, dispose a plurality of heating arrangements that comprise 2 load coils (attached drawings mark 5,6 is represented in Fig. 1) and electric heater (attached drawings mark 7 is represented in Fig. 1) etc., and be provided with the operation that is used to cook on its front surface right side, operate the operating surface board (operation panel) 8 (suitable) of corresponding various demonstrations with operating portion with this.In addition, the position above the right side that is positioned at guidance panel portion 8 is provided with the power connection switch 9 and the power supply cut-off switch 10 that are made of moment type of switch (momentary type switch).The user, by operate these switches 9 and 10 can carry out electric network source be subjected to the electricity beginning and stop.
At the upper surface of top board 4, demonstrate expression for pot etc. being heated cooking appliance (not shown) heats and the mounting frame 11,12,13 of the toroidal of the position of mounting by the method for printing with thermal endurance China ink (thermally stable ink) etc.Wherein, about the place ahead in the mounting frame 11,12 at 2 places, become and be used for being heated left induction heating district (induction-heating firing zone) 14, the right induction heating district 15 that cooking appliance carries out induction heating by 5,6 pairs of load coils (induction heating coil).On the other hand, be positioned at the mounting frame 13 of rear central authorities, become be used for by 7 pairs of electric heaters be heated cooking appliance conduct heat the heating the central heater thermal treatment zone 16.The user is by operating above-mentioned operating surface board 8, comes heating to each thermal treatment zone 14～16 to begin, heat and stop and firepower (input electric power) is set.
In the left induction heating thermal treatment zone 14, the place ahead of the right induction heating thermal treatment zone 15, be respectively arranged with the firepower display part 17,18 of the firepower that shows these thermals treatment zone 14,15.The formation of firepower display part 17,18 comprises: be arranged on a plurality of LED in the housing 3 and the transmission transmissive portions from the top board 4 of the light of these LED irradiations.Between a left side induction heating thermal treatment zone 14 and the right induction heating thermal treatment zone 15, being provided with and notifying the thermal treatment zone to the user is that the high temperature of high temperature is noted display part 19.High temperature notices that the formation of display part 19 comprises: be arranged on LED in the housing 3 and the transmission transmissive portions from the top board 4 of the light of this LED irradiation.In addition, about top board 4 rears, be formed with the air that is used for the electric parts of cooling load coil 5,6, electric heater 7 etc. and carry out air entry 20 and exhaust outlet 21 air-breathing, exhaust.
Fig. 1 is a block diagram (block diagram) of roughly representing the electricity formation of heating device.Heating device 1 possesses: be used for the load coil 5 of the below that is configured in the left induction heating thermal treatment zone 14 and the right induction heating thermal treatment zone 15 and 6 supply high frequency electric currents and carry out left inverter circuit (the inverter circuit) 30 and the right inverter circuit 31 of induction heating and carry out to the control of the electric heater 7 (suitable with heater) that is configured in 16 belows, the central heater thermal treatment zone, inverter circuit 30,31 (suitable with inverter with induction heating) and to control circuit 32 of energising control of electric heater 7 etc. etc.In addition, this control circuit 32 has: control microcomputer 33 (suitable with control part), to the power circuit 34 (with power supply unit suitable) of control microcomputer 33 supply work with power supply, the making operation test section 35 of the mode of operation of detection power connection switch 9 and the opening operation test section 36 that detects the mode of operation of power supply cut-off switch 10.
A pair of power source bus 37,38, the noise filter of using via noise remove (noise filter) 40 is connected in electric network source 39.Power connection switch 9 is double-throw shape (three contact types) sensitive switches (microswitch) with the sub-NO of common terminal COM, Chang Kaiduan and normally closed terminal NC.Power connection switch 9, during carrying out pressing operation by the user, conducting between the sub-NO of common terminal COM and Chang Kaiduan, during not carrying out pressing operation, conducting between common terminal COM and the normally closed terminal NC.The sub-NO of the Chang Kaiduan of power connection switch 9 is connected in power source bus 37.
Power supply cut-off switch 10 is switches of moment type, constitutes, and only becomes the state of closing in the operating period that is pressed.One side's of power supply cut-off switch 10 terminal ground connection (ground-potential terminal) (the earth of control circuit 32 sides), the opposing party's terminal is connected to opening operation test section 36.
The common terminal COM of power connection switch 9 is connected in power source bus 41, and normally closed terminal NC is connected in power source bus 42.Between power source bus 42 and power source bus 38, be connected making operation test section 35.Between power source bus 37 and power source bus 41, be connected with DC relay (DC relay) 43.Therefore, make the state and the power connection switch 9 of junction closure of the DC relay 43 of junction closure not have to apply alternating voltage to making operation test section 35 under the operated state by drive coil being supplied with dc voltage.
In the present embodiment, the path that arrives power circuit 34 from electric network source 39 via power source bus 37, power connection switch 9, power source bus 41 is suitable with first supply path, and suitable with second supply path via the path of power source bus 37, DC relay 43, power source bus 41 arrival power circuits 34 from electric network source 39.In addition, DC relay 43 is suitable with the self-sustaining mechanism of the "on" position that keeps second supply path.
Between power source bus 41 and power source bus 38, constitute the cooling fan (coolingfan) of cooling device and the series circuit and the power circuit 34 of optical coupler (photo-coupler) 45 and be connected in parallel mutually.Therefore, under power connection switch 9 operated states, perhaps under the state of the junction closure of DC relay 43, the series circuit and the power circuit 34 of cooling fan 44 and optical coupler 45 applied alternating voltage, make 33 work of control microcomputer.In addition, cooling fan 44 under this state, by the fans drive signal from 33 outputs of control microcomputer, when optical coupler 45 is switched on, is started working.The switching of the contact of DC relay 43 is undertaken by relay drive circuit (relay drive circuit) 46 by the relay drive signal control from control microcomputer 33.
The oscillatory work of right inverter circuit 31 is subjected to allow circuit 49 via vibration and inverter driving signal (the inverter driving signal) control of input from control microcomputer 33.Circuit 49 is allowed in this vibration, opening operation signal (the turn-off operation signal) Sa that correspondingly changes from the mode of operation with power supply cut-off switch 10 of opening operation test section 36 outputs is provided.Circuit 49 is allowed in vibration, becomes and " allowing " corresponding significant level (activelevel) by opening operation signal Sa, can be to right inverter circuit 31 output inverter drive signals.
In addition, has DC relay 50 with relay drive circuit 51 and the left inverter circuit 30 that constitutes also becomes the formation same with right inverter circuit 31.Circuit 49 is allowed in vibration, whether transmits inverters to inverter circuit 30,31 by control and drives signals, allows or the oscillatory work of disables inverter circuit 30,31, forbids that with said heating among the present invention mechanism is suitable.In addition, these inverter circuits 30,31 all constitute as the semi-bridge type inverter that is made of upper arm switching element and underarm switch element (all not shown).
One end of electric heater 7 is connected in power source bus 37 via DC relay 52.The other end of electric heater 7 is connected in power source bus 38 via DC relay 53 (suitable with relay with the heater energising).DC relay 52 is driven via relay drive circuit 54 by the drive signal control from control microcomputer 33.That is, control microcomputer 33 by the switching of DC relay 52 is controlled, is supplied with thereby control to the power supply of electric heater 7.
The switching of DC relay 53 is subjected to allow the heater-driven signal controlling that circuit 55 and relay drive circuit 56 are imported from control microcomputer 33 via heater heats.This heater heats is allowed circuit 55, provide from the opening operation signal Sa of opening operation test section 36 outputs.Heater heats is allowed circuit 55, becomes and " allowing " corresponding significant level by opening operation signal Sa, and can be to relay drive circuit 56 output heater-driven signals.Control microcomputer 33, by the switching of DC relay 53 is controlled, thereby control is to the energising amount of electric heater 7.Heater heats is allowed circuit 55, whether transmits the heater-driven signals to relay drive circuit 56 by control, thus the heating of allowing or forbidding being undertaken by electric heater 7, and said heating forbids that mechanism is suitable among itself and the present invention.
To control microcomputer 33, from operating surface board 8 input expression with heating, heat stop, the signal of indication (setting) that the cooking of firepower setting etc. is relevant, and import temperature detection signal from the temperature sensor 57,58,59 that is arranged at the left induction heating thermal treatment zone 14, the right induction heating thermal treatment zone 15, the central heater thermal treatment zone 16 respectively.
Next, describe for the formation relevant with the induction heating work of heating device 1.Fig. 2 is the figure that at length represents above-mentioned formation.Making operation test section 35 constitutes as main body with two-way imported optical coupler 60, and a side's of optical coupler 60 input terminal is connected in power source bus 37 via the resistance 61 of electric current restriction usefulness, and the opposing party's input terminal is connected in power source bus 38.The transistorized emitter of the outlet side of optical coupler 60 is connected in the ground wire 62 of the reference potential (earthing potential) that becomes control circuit 32 sides, and collector electrode is connected in power line 65 via resistance 63 and resistance 64.Power line 65 is applied the work power Vcc that generates by power circuit 34.In the present embodiment, the voltage of work with power Vcc for example is made as+5V.
Be connected with capacitor 66 interconnecting between node N1 and the ground wire 62 of resistance 63,64.Interconnect node N1, be connected in the SWON terminal of control microcomputer 33 as the lead-out terminal of making operation signal (the turn-on operation signal) Sb of the mode of operation of expression power connection switch 9.Control microcomputer 33 detects based on the level of the making operation signal Sb mode of operation to power connection switch 9.The resistance value of resistance 64, be set compare with the resistance value of resistance 63 very high.By such formation, under the state that has applied alternating voltage between the input terminal to optical coupler (opto-isolator) 60 (power connection switch 9=non-operating state), optical coupler 60 is connected, so making operation signal Sb becomes the L level.On the other hand, under the state that does not apply alternating voltage between the input terminal of optical coupler 60 (power connection switch 9=mode of operation), optical coupler 60 disconnects, so making operation signal Sb becomes the H level.
Capacitor (capacitor) the 66th, for: be provided with even still making operation signal Sb can be maintained the L level under near the situation above-mentioned alternating voltage is zero friendship (zero-crossing).That is, constitute at optical coupler 60 when on-state is changed to off-state, carry out charging, by making operation signal Sb being maintained the L level with the corresponding scheduled time in this charging interval for capacitor 66.In the present embodiment so that at alternating voltage be under near zero the state handing over, mode that making operation signal Sb can not be changed to the H level, the static capacity of setting capacitor 66 and the resistance value of resistance 64.
Opening operation test section 36 has transistor (resistive transistor) 67, resistance 68～70 and the capacitor 71 that possesses resistance.One side's of power supply cut-off switch 10 terminal is connected in ground wire (ground-potential line) 62, and the opposing party's terminal is connected in power line 65 via resistance 68.That is, power supply cut-off switch 10 is present in the electrical path (with detection with electrical path suitable) of the work that is applied in power Vcc.In addition, the opposing party's of power supply cut-off switch 10 terminal is connected in the base stage (base) of transistor 67.
The emitter of transistor 67 (emitter) is connected in ground wire 62, and collector electrode (collector) is connected in power line 65 via resistance 69 and resistance 70.Interconnecting between node (interconnection node) N2 and the ground wire 62 of resistance 69,70, be connected with capacitor 71.Interconnect node N2, as the lead-out terminal of the opening operation signal Sa of the mode of operation of expression power supply cut-off switch 10, circuit 49 is allowed in the SWOFF terminal and the vibration that are connected in control microcomputer 33.Control microcomputer 33 detects based on the level of the opening operation signal Sa mode of operation to power supply cut-off switch 10.The resistance value of resistance 70, be set compare with the resistance value of resistance 69 very high.
By such formation, under power supply cut-off switch 10 operated states, transistor 67 ends, and therefore allows that to control microcomputer 33 and vibration the opening operation signal Sa of circuit 49 outputs becomes the H level.On the other hand, under the not operated state of power supply cut-off switch 10, therefore transistor 67 conductings allow that to control microcomputer 33 and vibration the opening operation signal Sa of circuit 49 outputs becomes the L level.
Capacitor 71 (portion is suitable with noise filter) is to survey for the flase drop of the mode of operation that prevents to cause owing to the extraneous noise that will enter opening operation test section 36 (exogenous noise) etc. to be provided with.That is, constitute at transistor 67 when conducting state is changed to cut-off state, carry out charging for capacitor 71, by and the corresponding scheduled time in its charging interval, make and will allow that the opening operation signal Sa of circuit 49 outputs is maintained the L level to vibration.In the present embodiment, the noise that makes opening operation signal Sa can not have nothing to do owing to the operation with power supply cut-off switch 10 is changed to H level ground, sets the static capacity of capacitor 71 and the resistance value of resistance 70.
One end of induction heating heating beginning switch 72,73 all is connected in power line 65, and the other end is connected in ground wire 62 via resistance 74,75 respectively and is connected in RSB terminal, the LSB terminal of control microcomputer 33.Therefore, for example when right induction heating heating beginning switch 72 was pressed operation, the heating commencing signal of input RSB terminal was changed to the H level from the L level.Control microcomputer 33 by the variation of such signal level, can detect right induction heating heating beginning switch 72 and be operated.In addition, control microcomputer 33, the operation for left induction heating heating beginning switch 73 detects equally with above-mentioned.
The induction heating heating begins the other end of switch 72,73, also is connected in the base stage of the NPN transistor 78 of resistance respectively via diode (diode) 76,77.The grounded emitter of this transistor 78, its collector electrode are connected in vibration and allow circuit 49.Therefore, when any one of induction heating heating beginning switch 72,73 was pressed operation, transistor 78 conductings allowed that the collector electrode that circuit 49 connects becomes the L level thereby make to vibration.In addition, the type of following each transistor and this transistor 78 same " resistance is arranged ".
By controlling inverter driving signal RU, the RD that microcomputer 33 generates waveforms, is used to drive right inverter circuit 31, from RU terminal, the output of RD terminal of control microcomputer 33, be provided for the base stage of the NPN transistor (NPN transistor) 81,82 of right inverter circuit 31 respectively via the resistance 79,80 of electric current restriction usefulness.These transistors 81,82, drive signal RU, RD control by inverter, make upper arm switching element (upper arm switching element) and underarm switch element (lower arm switching element) hocket conducting by driving (on-off drive), thereby produce the high-frequency current of supplying with to load coil 6 via the drive circuit that comprises optical coupler (all not shown).
In addition, the inverter that is used to drive left inverter circuit 30 drives signal LU, LD, and also to drive the situation of signal RU, RD same with above-mentioned inverter, respectively from the LU terminal of control microcomputer 33, the LD terminal is provided for the NPN transistor 85,86 of left inverter circuit 30 via the resistance 83,84 of electric current restriction usefulness base stage.
Therefore, if opening operation signal Sa is a L level then transistor 89 becomes cut-off state, transistor 88 is ended by the conducting of ENB signal controlling.On the other hand, if opening operation signal Sa is a H level then transistor 89 becomes conducting state, then how the level of transistor 88 ENB signals all becomes cut-off state.
In addition, the emitter of transistor 88 is connected in ground wire 62, and its collector electrode is connected in power line 65 via thyristor 90 (to keep mechanism suitable with oscillatory regime) and resistance 91.The grid of thyristor 90 are connected in power line 65 via resistance 92 and PNP transistor (PNP transistor) 93.Be connected with the collector electrode of the transistor 78 of above-mentioned operating surface board 8 in the base stage of transistor 93, when in the induction heating heating beginning switch 72,73 any one is pressed operation and when making transistor 78 conductings, transistor 93 also becomes conducting state, and provides triggering signal (trigger signal) to the grid of thyristor (thyristor) 90.
The base stage of the transistor 81,85 in each inverter circuit 30,31 is connected in ground wire 62 via diode 94,95 and NPN transistor 96 respectively.The base stage of transistor 96 is connected in the anode (anode) of thyristor 90.Therefore, the conducting of transistor 96 ends, by the conducting state control of thyristor 90 and transistor 88.
By above-mentioned formation, when transistor 89 by and the level of ENB signal when becoming the H level, transistor 88 conductings.And when transistor 93 conductings under the state of transistor 88 conductings, when providing triggering signal to the grid of thyristor 90, thyristor 90 becomes conducting state.So transistor 96 ends, inverter drives signal RU and LU is transmitted to inverter circuit 30,31.That is, circuit 49 is allowed in vibration, and inverters drive signal RU and LU allows or the oscillatory work of disables inverter circuit 30,31 thereby whether control transmits to inverter circuit 30,31.
Next, describe for the formation relevant with the heater heats work of heating device 1.Fig. 3 is the figure that at length represents above-mentioned formation.In addition, for the part mark same Reference numeral identical, omit it and constitute explanation with Fig. 2.Also be provided for heater heats from the opening operation signal Sa of opening operation test section 36 output and allow circuit 55.
Be provided with by can similarly carrying out the heater heats that the switch of the open type of moment work constitutes at operating surface board 8 and begin switch 103 with power supply cut-off switch 10.Operating surface board 8, the operation that begins switch 103 with heater heats correspondingly, the signal that the CSB terminal and the heater heats of control microcomputer 33 are allowed circuit 55 output expression heating beginnings.In addition, be used to export the circuit of this signal, by with Fig. 2 in resistance 74, diode 76 and suitable resistance 104, diode 105 and the NPN transistor 106 of NPN transistor 78 similarly constitute.
Therefore, be pressed when operation when heater heats begins switch 103, control microcomputer 33 according to the variation of the signal level of input CSB terminal, detects heater heats and begins switch 103 and be operated.In addition, transistor 106 conductings are connected in heater heats and allow that the collector electrode of the transistor 106 of circuit 55 becomes the L level thereby make.
The heater-driven signal that is used to drive DC relay 53 by 33 outputs of control microcomputer, be output from the HEAT terminal of control microcomputer 33, be provided for the base stage of the NPN transistor that constitutes relay drive circuit 56 via the resistance 107 of electric current restriction usefulness.This transistorized emitter is connected in ground wire 62, and its collector electrode is connected in power line 65 via the relay coil 53b of DC relay 53.In addition, the end of the relay tip 53a of DC relay 53 is connected in power source bus 37 via electric heater 7 and DC relay 52, and the other end is connected in power source bus 38.
Heater heats is allowed circuit 55, by allowing the resistance 87,91,92 of circuit 49 with vibration, NPN transistor 88,89,96, thyristor 90, the resistance 108,109,110 that PNP transistor 93 and diode 94 are suitable, NPN transistor 111,112,113, thyristor 114, PNP transistor 115 and diode 116 allow that with vibration circuit 49 similarly is configured.
The transistorized base stage of relay drive circuit 56, same with the base stage of transistor among Fig. 2 81, be connected in ground wire 62 via diode 116 and NPN transistor 113, the conducting of transistor 113 is by the conducting state control by thyristor 114 and transistor 111.
By above-mentioned formation, when transistor 112 by and ENB signal when becoming the H level, transistor 111 conductings.And under the state of transistor 111 conductings, when transistor 115 conductings, when providing triggering signal to the grid of thyristor 114, thyristor 114 becomes conducting state.So transistor 113 ends, the heater-driven signal is transmitted to relay drive circuit 56.That is, heater heats is allowed circuit 55, whether transmits the heater-driven signal to relay drive circuit 56 by control, thus the heating of allowing or forbidding being undertaken by electric heater 7.
Next, the effect for present embodiment describes.
(1) induction heating work
In order to begin the electricity that is subjected to of electric network source, when power connection switch 9 was pressed operation, the common terminal COM of power connection switch 9 was connected with the sub-NO of Chang Kaiduan, and power circuit 34 is applied electric network source.Thus, control microcomputer 33, be supplied to work with power Vcc (+5V) start.So, the DC relay 43 that control microcomputer 33 is used via relay drive circuit 46 closed self-sustainings immediately.Thus, even power connection switch 9 operation that is not pressed later on still continues to control microcomputer 33 supply work power Vcc, control microcomputer 33 can be as required cut-out work power Vcc automatically.In addition, at this moment, control microcomputer 33 is lighted power supply display part 97.
Under the holding state that has only dropped into power supply as described above, output to vibration from opening operation test section 36 and allow that the opening operation signal Sa of circuit 49 is L level, transistor 89 ends, and the ENB signal of exporting from control microcomputer 33 is the L level, and therefore transistor 96 conductings of circuit 49 are allowed in vibration.Therefore, drive under the situation of signal RU, RD or LU, LD, also become the vibration illegal state that inverter circuit 31,30 can not carry out oscillatory work even sent inverter mistakenly at control microcomputer 33.In addition, control microcomputer 33 is because opening operation signal Sa is the L level, so be judged as the not operated state of power supply cut-off switch 10.
Next, carry out cooking in order to bring into use for example right induction heating thermal treatment zone 15, if right induction heating heating beginning switch 72 is carried out pressing operation, then the signal of the expression heating beginning of the RSB terminal of input control microcomputer 33 is changed to the H level.At this moment, during right induction heating heating beginning switch 72 was pressed, transistor 78 conductings so transistor 93 also becomes conducting state, provided triggering signal to the gate terminal of thyristor 90.In addition, control microcomputer 33 when the variation of the signal level by being input to the RSB terminal detects the heating sign on of the right induction heating thermal treatment zone 15, makes the ENB signal be changed to the H level and makes transistor 88 conductings.Time till making these transistor 88 conductings begins the time of switch 72 till discharge and compares from pushing right induction heating with user for example, and is short fully.
That is, during the gate terminal to thyristor 90 provides triggering signal, make transistor 88 conductings, thereby make thyristor 90 become conducting state.Then, if thyristor 90 becomes conducting state, even then right induction heating heating beginning switch 72 disconnects, as long as transistor 88 conductings just can keep this state.When thyristor 90 became conducting state, transistor 96 ended.Thus, can not force to make right inverter to drive signal RU, RD and reduce to the L level, right inverter circuit 31 becomes the vibration that can carry out oscillatory work and allows state.
Under above-mentioned state, control microcomputer 33 is supplied with AC power via relay drive circuit 48 closed DC relays 47 to right inverter circuit 31, sends inverter and drives signal RU, RD.And control microcomputer 33 drives signal RU, RD to inverter and carries out conducting by control, and feasible input electric power (firepower) to load coil 6 becomes the value of being set by the user.In addition, and begin induction heating in this wise side by side, control microcomputer 33 makes optical coupler 45 conductings and drives cooling fan 44.
Next, for cooking is finished, when right induction heating is heated shutdown switch (induction heating termination switch) (not shown) when operating, control microcomputer 33 detects right induction heating heating shutdown switch and has been operated, just stop the transmission that inverter drives signal RU, RD, make the ENB signal be changed to the L level afterwards and transistor 88 is ended.Thus, thyristor 90 becomes nonconducting state, and transistor 96 conductings, returns above-mentioned holding state.In addition, heating device 1 is even about using the left induction heating thermal treatment zone 14 to carry out the situation of cooking, also carry out the same work of situation with the above-mentioned right induction heating thermal treatment zone 15.
Next, after cooking finished, in order to stop the electricity that is subjected to of electric network source, when power supply cut-off switch 10 was carried out pressing operation, opening operation signal Sa became the H level.Control microcomputer 33 is judged power supply cut-off switch 10 according to the level variation of opening operation signal Sa and has been operated.So, control microcomputer 33, power supply display part 97 is extinguished, and how the variation of importing the signal level of RSB terminal and LSB terminal all become the state (not accepting the state to the operation of each induction heating heating beginning switch 72,73) that the ENB signal is maintained the L level.Control microcomputer 33 utilizes temperature sensor 58 to detect the temperature of the employed right induction heating thermal treatment zone 15.In addition, opening operation signal Sa becomes the H level, so transistor 89 conductings, vibration allows that circuit 49 becomes heating illegal state (even if also being forced to stop) under the situation that continues heating.
Be higher than in this detected temperatures under the situation of predetermined temperature, control microcomputer 33 continues the conducting state of DC relay 43 and high temperature is noticed that display part 19 sends the LED drive signal, impel the user to note, and the conducting state of optical coupler 45 is continued and continuation driving cooling fan 44.Then, control microcomputer 33 after having confirmed that detected temperatures becomes below the predetermined temperature, disconnects DC relay 43.Thus, stop to use the supply of power Vcc, disconnect the power supply of heating device 1 integral body for the work of control microcomputer 33.In addition, in the present embodiment, the above-mentioned predetermined temperature person of being to use touches under the situation of the thermal treatment zone and is regarded as safe temperature.
But, in above-mentioned work, during cooling fan 44 works on,, in the existing device that constitutes, can not detect this operation than predetermined temperature height even power connection switch 9 is operated in detected temperatures.Therefore, for example after the user operates primary power source cut-off switch 10, before the temperature of heating device 1 becomes below the predetermined temperature, even carry out once more can not beginning cooking once more under the situation of cooking in hope.
With respect to this, in the present embodiment, in 43 conduction periods of DC relay, when power connection switch 9 was operated, control microcomputer 33 can change according to the level from the making operation signal Sb of making operation test section 35 outputs, detect this operation.And, control microcomputer 33, when detecting the operation of power connection switch 9, power supply display part 97 is lighted once more, and become and state (not accepting state) that the variation of importing the signal level of RSB terminal and LSB terminal correspondingly makes the ENB signal change the operation of each induction heating heating beginning switch 72,73.That is, control microcomputer 33 returns above-mentioned holding state, so after the operation of power supply cut-off switch 10, even before the temperature of heating device 1 becomes below the predetermined temperature, also can begin cooking once more.
In addition, after cooking finished, even forget that for example user the situation of operating power cut-off switch 10 is inferior, the electricity that is subjected to that heating device 1 is carried out electric network source as described as follows quit work.That is, after cooking finishes, control microcomputer 33, with above-mentioned power supply cut-off switch 10 operated situations similarly, confirm that the temperature of the employed thermal treatment zone has become enough low.Afterwards, not carrying out in the operating surface board 8 heating at the fixed time in (for example 1 hour) begins under the situation of operation of the operation that waits or power connection switch 9, control microcomputer 33 extinguishes power supply display part 97 and DC relay 43 is disconnected, and stops to be subjected to of electric network source.
(2) heater heats work
In order to begin the electricity that is subjected to of electric network source, when power connection switch 9 is subjected to pressing operation, similarly become holding state with the situation of induction heating work.Under this holding state, same with the situation of induction heating work, heater heats is allowed transistor 113 conductings of circuit 55, even, still become and to carry out the energising illegal state that heats by electric heater 7 so sent mistakenly under the situation of heater-driven signal at control microcomputer 33.
Next, carry out cooking in order to use the central heater thermal treatment zone 16, when heater heats begins switch 103 when being subjected to pressing operation, the signal of the CSB terminal of input control microcomputer 33 is changed to the H level.At this moment, begin during switch 103 pushed in heater heats, transistor 106 conductings so transistor 115 also becomes conducting state, provide triggering signal to the gate terminal of thyristor 114.In addition, control microcomputer 33 when the variation according to the signal level of input CSB terminal, when detecting the heating sign on of the central heater thermal treatment zone 16, makes the ENB signal be changed to the H level and makes transistor 111 conductings.Time till making these transistor 111 conductings begins the time of switch 103 till discharge and compares from pushing heater heats with user for example, and is short fully.
That is, during the gate terminal to thyristor 114 provides triggering signal, make transistor 111 conductings, thyristor 114 becomes conducting state thus.And, if heater heats begins switch 103 disconnections even thyristor 114 becomes conducting state, as long as transistor 111 conductings then still can keep this state.So, when thyristor 114 becomes conducting state, transistor 113 is ended,, become and to carry out allowing state by the energising that electric heater 7 heats so can not force the heater-driven signal is reduced to the L level.
Under above-mentioned state, control microcomputer 33 with DC relay 52 closures, makes an end of electric heater 7 be connected in power source bus 37 via relay drive circuit 54, and sends the heater-driven signal.And 33 pairs of heater-driven signals of control microcomputer are connected and are disconnected control, and feasible input electric power (firepower) to electric heater 7 becomes the value of being set by the user.In addition, and begin heater heats so side by side, control microcomputer 33 makes optical coupler 45 connect and drive cooling fan 44.
Next, in order to finish cooking, to heater heats shutdown switch (not shown) when operating, control microcomputer 33 detects this mode of operation and stops the transmission of heater-driven signal.Afterwards, control microcomputer 33 makes the ENB signal be changed to the L level and transistor 111 is ended.Thus, thyristor 114 becomes nonconducting state, so above-mentioned holding state is returned in transistor 113 conductings.
In addition, after cooking finishes, about under the situation of the operation that is pressed at power supply cut-off switch 10 and the user forget the work of the heating device 1 under the situation of operating power cut-off switch 10, similarly carry out with the situation of induction heating work.
As mentioned above, can access following such effect according to present embodiment.
In the heating device 1, power connection switch 9 and power supply cut-off switch 10 are made of the switch that can carry out moment work, so the user can carry out the operation of the access disconnection of power supply with slight contact, compares with the prior mechanical mains switch, operability significantly improves.
To drive signal from the inverter of control microcomputer 33 outputs, allow that via vibration circuit 49 offers inverter circuit 30,31, allow in the circuit 49 in vibration and correspondingly allow with the mode of operation of power supply cut-off switch 10 or the transmission of disables inverter drive signal.In addition, will be from the heater-driven signal of control microcomputer 33 outputs, allow that via heater heats circuit 55 offers relay drive circuit 56, allows the transmission of correspondingly allowing or forbid the heater-driven signal in the circuit 55 with the mode of operation of power supply cut-off switch 10 in heater heats.Therefore, even it is for example 33 out of control, break down etc. at the control microcomputer, continue under the situation of inverter circuit 30,31 transmission inverters driving signals or under the lasting situation relay drive circuit 56 transmission heater-driven signals, as long as user's operating power cut-off switch 10, the transmission that just can make inverter drive signal and heater-driven signal is under an embargo, so can force to finish induction heating work and heater heats work.
Be provided with the making operation test section 35 that the mode of operation to power connection switch 9 detects.As mentioned above, power connection switch 9 can be operated with slight contact, and therefore its operating time is short usually.Therefore, keeping under the situation of H level comparing in the extremely long time, can be judged as at power connection switch 9 and take place unusually with the above-mentioned common operating time from the making operation signal Sb of making operation test section 35 output.That is, for example can detect because the fault of the operation part of switch etc. cause the power connection switch 9 such malfunction of operation that continues to be pressed.
The operation even power supply cut-off switch 10 is pressed still keeps supplying with to the power supply of control microcomputer 33 via DC relay 43, and control microcomputer 33 is cut off the electricity supply automatically thereby disconnect DC relay 43 afterwards as required.Therefore, finish, power supply cut-off switch 10 carried out under the situation of pressing operation at cooking by the user, control microcomputer 33, the temperature of the employed thermal treatment zone 14～16 high during, notice that by high temperature display part 19 impels the user to note, thereby can prevent user's Contact Heating district 14～16.In addition, becoming up to the temperature of the thermal treatment zone drives cooling fan 44 till enough low, thereby can cool off the thermal treatment zone that becomes high temperature at short notice.
During DC relay 43 was connected, when power connection switch 9 was operated, control microcomputer 33 can change according to the level of the making operation signal Sb that exports from making operation test section 35, detects this operation.Therefore, for example after the user has operated power supply cut-off switch 10,, cooking is begun once more thereby connect switch 9 by operating power even before the temperature of heating device 1 reaches below the predetermined temperature.Therefore, the temperature that need not to wait for heating device 1 reaches following just can the beginning once more of predetermined temperature cooks, and has improved convenience.In addition, with the operation of power connection switch 9 of this moment power supply display part 97 is lighted once more, so the user can go out to begin cooking once more by visual identity.
Power supply cut-off switch 10 be present in for example be applied in+work of 5V is with the electrical path of power Vcc.Therefore, power supply cut-off switch 10 can adopt and hang down switch withstand voltage, the low current capacity, for example touches (tact) switch, compares with the switch of the existing formation of using sensitive switch, can reduce cost.
In opening operation test section 36, be provided with capacitor 71, this capacitor 71 be used for make transistor 67 from conducting switch to by the time opening operation signal Sa be maintained the L level on schedule.Thus, can suppress and the influence of the noise of path overlap for opening operation signal Sa from power supply cut-off switch 10 to node N2.For example, power supply cut-off switch 10 is being configured under the situation of operating surface board 8, the wiring that is used for its terminal is connected in making operation test section 35 is elongated, then need be for the noise countermeasure in this wiring.Even under these circumstances, making operation test section 35 has improved the noise resistance performance as mentioned above like that, so can prevent the mistake output of opening operation signal Sa.
Be subjected to simultaneously under the situation of pressing operation at power connection switch 9 and power supply cut-off switch 10, control microcomputer 33 is preferentially discerned the situation that power supply cut-off switch 10 has been subjected to pressing operation, so can improve fail safe.
When induction heating heating beginning switch 72 or 73 is pressed operation, thereby vibration allows that the thyristor 90 of circuit 49 becomes the oscillatory work that conducting state is allowed inverter circuit 30,31.In addition, when heater heats begins switch 103 when being subjected to pressing operation, thereby heater heats allows that the thyristor 114 of circuit 55 becomes conducting state and allows energising to electric heater 7.Therefore, even transient operation induction heating heating beginning switch 72,73 or heater heats begin switch 103, because oscillatory work allows that state or energising allow that state can continue, so induction heating heating beginning switch 72,73 and heater heats begin switch 103 and can be made of the switch of slight contact, have improved operability.
Use optical coupler 60 to constitute making operation test section 35, this making operation test section 35 will represent to constitute the signal of mode of operation of the power connection switch 9 of the input side be applied in electric network source, offer the work of being applied in and allow circuit 49, so can separate the earth of input side and the earth of control circuit 32 sides with the control microcomputer 33 and the vibration of control circuit 32 sides of voltage vcc.
In addition, the present invention is not limited to execution mode above-described and that accompanying drawing is put down in writing, can carry out following such distortion or expansion.
Be used to heat the induction heating heating beginning switch 72,73 of the operation of beginning, heater heats begins switch 103 and is made of the switch that can work moment, but for these, also can be by the switch formations such as (rotary encoder type switch) of the rotary encoder formula that can carry out push operation, the additional function of adjusting firepower.So, also just there is no need to be provided with separately the dial of firepower adjustment usefulness, the formation of the panel part that can simplify the operation 8.
Constituted making operation test section 35 with optical coupler 60 as main body, but under the situation of the earth of the earth that there is no need to separate input side and control circuit 32 sides, also can constitute as main body with the thyristor of transistor etc.In addition, making operation test section 35 and opening operation test section 36 are not limited to the circuit shown in the above-mentioned execution mode and constitute, and get final product so long as can detect the formation of the mode of operation of power connection switch 9 and power supply cut-off switch 10.The capacitor 71 of opening operation test section 36 gets final product according to the influence degree setting of noise for opening operation signal Sa.
Self-sustaining mechanism is not limited to DC relay 43, so long as can keep the mechanism of the "on" position of second supply path to get final product.For example also can use thyristor (semiconductorswitching element) to constitute self-sustaining mechanism.
(in the above-described embodiment) constitute, after cooking finishes, the temperature of the employed thermal treatment zone 14～16 high during, notice that by high temperature display part 19 impels the user to note, and becoming up to the temperature of the thermal treatment zone drives cooling fan 44 till enough low, but this is provided with as required and gets final product.
In the above-described embodiment, for with use load coil 5,6 to carry out under the situation of induction heating cooking or use central electric heater 7 to carry out power supply under the situation of the heater heats cooking and supply with relevant control and be illustrated, even but for as other one of heating arrangements roaster (roaster) thus also can adopt same formation can access same effect.In addition, heating device there is no need to have above-mentioned all heating arrangements, as long as have arbitrary heating arrangements.
In the present embodiment, the heating device 1 of lifting the built in type that is assembled in cooking table 2 is for example is illustrated, but the present invention is not limited to this, also can be applicable to the heating device of the mounting type that placement is used on the table etc.
Claims (9)
1. heating device is characterized in that having:
The heating arrangements that heats;
The control part that the heating of being undertaken by described heating arrangements is controlled;
Accept the external electrical network power supply and power supply unit that generation work is supplied with power supply, to described control part;
The power connection switch, it is used to begin being subjected to electricity of described electric network source and is operated, under its mode of operation its between from described electric network source power receiving section to first supply path of described power supply unit;
The making operation test section that the mode of operation of described power connection switch is detected;
Self-sustaining mechanism, it is controlled by described control part, keeps "on" position that be arranged in parallel with described first supply path, second supply path from described electric network source power receiving section to described power supply unit;
The power supply cut-off switch, it is used to stop being subjected to electricity of described electric network source and is operated, can the output function signal under its mode of operation; With
Reception forbids that from the described operation signal of described power supply cut-off switch output the heating of the heating undertaken by described heating arrangements forbids mechanism.
2. the heating device of putting down in writing according to claim 1 is characterized in that:
Have and be used for the cooling device that comprises cooling fan that this heating device is cooled off;
Described cooling device is by being worked by described control part control, even also work under the situation of having exported described operation signal from described power supply cut-off switch.
3. according to claim 1 or 2 heating devices of being put down in writing, it is characterized in that:
Has the operating portion that is used to carry out the setting relevant with the cooking;
Described control part, under the state of the "on" position that keeps described second supply path by described self-sustaining mechanism, when described in the given time operating portion is not operated and when not detecting the operation of described power connection switch via described making operation test section in the given time, remove the maintenance of the described "on" position of being undertaken by described self-sustaining mechanism.
4. according to each heating device put down in writing in the claim 1 to 3, it is characterized in that:
Described power supply cut-off switch is set to, uses in the electrical path with the detection of power supply between being applied in described work,
Described heating device has: based on the terminal voltage of described power supply cut-off switch, detect the opening operation test section of the described operation signal of this power supply cut-off switch.
5. the heating device of putting down in writing according to claim 4 is characterized in that:
It is the noise filter portion of input that described opening operation test section has with the terminal voltage of described power supply cut-off switch, detects described operation signal based on the output of this noise filter portion.
6. according to claim 4 or 5 heating devices of being put down in writing, it is characterized in that:
Described control part under the state that described power connection switch and described power supply cut-off switch have been operated simultaneously, preferentially carries out the detection of being undertaken by described opening operation test section.
7. according to each heating device put down in writing in the claim 1 to 6, it is characterized in that:
Described making operation test section has: the signal of mode of operation that will represent described power connection switch is to the optical coupler of described control part output.
8. the electrification method of electrical network power source of a heating device, this heating device has: the heating arrangements that heats; The control part that the heating of being undertaken by described heating arrangements is controlled; The power supply unit of supplying with power supply, to described control part by electric network source generation work; The power connection switch, it is used to begin being subjected to electricity of described electric network source and is operated, and forms first supply path from described electric network source to described power supply unit under its mode of operation; The making operation test section that the mode of operation of described power connection switch is detected; By described control part control, the self-sustaining mechanism that keeps "on" position that be arranged in parallel with described first supply path, second supply path from described electric network source to described power supply unit; The power supply cut-off switch, it is used to stop being subjected to electricity of described electric network source and is operated, can the output function signal under its mode of operation; With forbid or allow that the heating of the heating of being undertaken by described heating arrangements forbids mechanism that the electrification method of electrical network power source of this heating device is characterised in that:
When described power connection switch is operated, described power supply unit generation work power supply, supply with to described control part, described control part is accepted described work and is started working with the supply of power supply, and making described self-sustaining mechanism is that hold mode begins being subjected to of described electric network source;
When described power supply cut-off switch was operated, the heating that mechanism disables is undertaken by described heating arrangements was forbidden in described heating, and described control part is removed the hold mode of described self-sustaining mechanism, stops to be subjected to of described electric network source.
9. the electrification method of electrical network power source of the heating device of being put down in writing according to Claim 8 is characterized in that:
Described heating device also has: the cooling device that comprises cooling fan that is used to carry out the operating portion of the setting relevant with the cooking and is used for described cooking device self is cooled off;
Described control part is controlled the heating of being undertaken by described heating arrangements based on the operation of described operating portion,
When described power supply cut-off switch was operated, described control part became the state of the operation of not accepting described operating portion, and described cooling device is worked on,
During described cooling device worked on, when detecting the operation of described power connection switch via described making operation test section, described control part became the state of the operation of accepting described operating portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008164428A JP5253902B2 (en) | 2008-06-24 | 2008-06-24 | Heating cooker and power supply method to heating cooker |
| JP164428/2008 | 2008-06-24 |
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| Publication Number | Publication Date |
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| CN101616517A true CN101616517A (en) | 2009-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910146350A Pending CN101616517A (en) | 2008-06-24 | 2009-06-24 | The electrification method of electrical network power source of heating device and heating device |
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| JP (1) | JP5253902B2 (en) |
| CN (1) | CN101616517A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110073720A (en) * | 2016-12-23 | 2019-07-30 | Bsh家用电器有限公司 | Cooking apparatus device |
| CN111750387A (en) * | 2019-03-29 | 2020-10-09 | 林内株式会社 | Heating cooker |
| CN111750387B (en) * | 2019-03-29 | 2024-05-24 | 林内株式会社 | Heating Cooker |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102885160B (en) * | 2012-05-12 | 2014-03-12 | 九阳股份有限公司 | Electromagnetic heating cooking equipment capable of preparing soybean milk |
| CN112856481B (en) * | 2021-01-28 | 2022-06-28 | 华帝股份有限公司 | Igniter control method for preventing electrification automatic ignition and igniter applying igniter control method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2663771B2 (en) * | 1991-10-22 | 1997-10-15 | いすゞ自動車株式会社 | Vehicle brake energy regeneration device |
| JPH11339952A (en) * | 1998-05-28 | 1999-12-10 | Matsushita Electric Ind Co Ltd | Heating cooking device |
| JP3598988B2 (en) * | 2001-04-06 | 2004-12-08 | 松下電器産業株式会社 | Cooking device |
| JP4854311B2 (en) * | 2006-01-25 | 2012-01-18 | 株式会社東芝 | Cooker |
| JP2008128295A (en) * | 2006-11-17 | 2008-06-05 | Iseki & Co Ltd | Working vehicle |
-
2008
- 2008-06-24 JP JP2008164428A patent/JP5253902B2/en active Active
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110073720A (en) * | 2016-12-23 | 2019-07-30 | Bsh家用电器有限公司 | Cooking apparatus device |
| CN110073720B (en) * | 2016-12-23 | 2022-02-15 | Bsh家用电器有限公司 | Cooking appliance device |
| CN111750387A (en) * | 2019-03-29 | 2020-10-09 | 林内株式会社 | Heating cooker |
| CN111750387B (en) * | 2019-03-29 | 2024-05-24 | 林内株式会社 | Heating Cooker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5253902B2 (en) | 2013-07-31 |
| JP2010009767A (en) | 2010-01-14 |
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Application publication date: 20091230 |