CN102644946B - Cooking device - Google Patents

Abstract

The invention relates to a cooking device comprising a body, a microwave generator, a rotable antenna, a current/voltage detection unit and a control unit, wherein the body forms a cooking box incluing a plurality of zones; each one of the zones is used for containing the objects; the microwave generator generates the microwave; the rotable antenna radiates the microwave generated by the microwave generator to the cooking box, and has directivity; the current/voltage detection unit and a control unit detects the change of the current or voltage of the microwave generating unit related with the position of the rotable antenna when the rotable antenna performs on rotation; and the control unit determines the position of the rotable antenna when the microwave generator gets the operation efficiency being greater than the preset value according to the change of the current or voltage detected by the current/voltage detection unit, and suspends the rotable antenna at the determined position.

Description

Cooker

Technical field

The present invention relates to culinary art (cooking) device.

Background technology

Cooker (heating/cooker) such as micro-wave oven comprises polytype heating unit, utilize the microwave cooking of the microwave being provided by magnetron, utilization cook and utilize the steam cooking of steam by the hot baking box of heater radiation, and can cook object with various types of cooking methods such as those.

For example, JP2009-257634A discloses a kind of cooking methods, and wherein heating simultaneously has the object (heating simultaneously) of different temperatures.Adopt the method, can each object be heated to suitable temperature by once heating simultaneously.

And JP2000-164335A discloses a kind of technology, the wherein temperature equably heating target in the case of considering the shape of object and the position of placing objects, the variation of the current value based on magnetron, the rotating disk that is used in diffusion microwave suspends.

In recent years, specified to have the regulation of closing energy-saving, and energy-conservation target level was just revised with reference to the level of the leading enterprise in industry every several years.For the cooker such as micro-wave oven, exist development based on energy-conservation idea in the urgent need to.

For this object, the above-mentioned technology that rotating disk is controlled in the variation based on impedance can be applied to heating technique simultaneously.But, even if rotating disk is suspended, still there is local heat, thereby cause more or less inhomogeneous of generating object temperature.Therefore,, in reality, heating target in rotating rotating disk, causes the variation of impedance.Specifically, there is trade-off relation eliminating the problem of non-uniform temperature and improve between the problem of operating efficiency, and therefore, add at the same time that to hanker realizing energy-conservation be difficult.

Summary of the invention

In view of situation above, complete the present invention, and target of the present invention is to provide the cooker that can simultaneously heat equably with the good efficiency of heating surface and temperature multiple objects.

Can realize this target and other target according to the present invention, the invention provides a kind of cooker, described cooker comprises main body, and this main body forms the cooking box that comprises multiple regions, and each in multiple regions is for holding therein object; The microwave that generates microwave generates equipment; Rotable antenna, this rotable antenna is by the described microwave being generated by described microwave generation equipment to described cooking box, and described rotable antenna is set up has directionality; Current/voltage detecting unit, described current/voltage detecting unit, during described rotable antenna rotates at least one times, detects the variation of the curtage of the described microwave generation unit being associated with the position of described rotable antenna; And control module, the described variation of the curtage of described control module based on being detected by described current/voltage detecting unit, the position of rotable antenna described in determining when described microwave generation equipment obtains the operating efficiency that is greater than predetermined value, and described control module suspends in determined position described rotable antenna.

According to the present invention, even if add and hanker at the same time, also can realize energy-conservation and heating target and there will not be non-uniform temperature advantageously.

Brief description of the drawings

In the accompanying drawings:

Fig. 1 is according to the front view of the micro-wave oven of the embodiment of cooker of the present invention;

Fig. 2 is the vertical cross-section of observing the micro-wave oven Fig. 1 from front;

Fig. 3 is the outside drawing of the cooking box bottom surface of the cooking box of micro-wave oven;

Fig. 4 is the outside drawing that specifically illustrates the rotable antenna of micro-wave oven;

Fig. 5 is the functional-block diagram illustrating according to the electrical configurations of the micro-wave oven of the present embodiment;

Fig. 6 is the allocation plan for the circuit of magnetron setting;

Fig. 7 is the transition diagram that the setting program for heat is simultaneously shown;

Fig. 8 is the exemplary plot illustrating for use the demonstration that adds another setting program that hot key heats simultaneously simultaneously;

Fig. 9 is the exemplary plot illustrating for use the demonstration that adds the another setting program that hot key heats simultaneously simultaneously;

Figure 10 is the flow chart that the flow process of heating by carrying out according to the micro-wave oven of the present embodiment when is shown; And

Figure 11 is the flow chart that another flow process of heating by carrying out according to the micro-wave oven of the present embodiment when is shown.

Detailed description of the invention

Describe according to the embodiment of cooker of the present invention (heating/cooker) hereinafter with reference to accompanying drawing.

Fig. 1 is according to the front view of the micro-wave oven 1 of the embodiment of cooker of the present invention.

Fig. 2 is the vertical cross-section of observing the micro-wave oven 1 Fig. 1 from front.

Fig. 3 is the outside drawing of the cooking box bottom surface 15 of the cooking box 14 of micro-wave oven 1.

Fig. 4 is the outside drawing that specifically illustrates the rotable antenna 36 of micro-wave oven 1.

Fig. 5 is the functional-block diagram illustrating according to the electrical configurations of the micro-wave oven 1 of the present embodiment.

As shown in fig. 1, micro-wave oven 1 comprises main body 10 and door 11.

As shown in Figure 2, main body 10 comprises inner casing 12 and exterior case 13.Inner casing 12 forms the cooking box 14 that is configured to hold object.The outward appearance (external frame) of exterior case 13 covering internal casings 12 and formation micro-wave oven 1.This cooking box 14 is included in the positive opening portion of micro-wave oven 1, by this opening portion, object is put into/is taken into cooking box 14 or takes out/take out from cooking box.

As shown in fig. 1, door 11 is attached to the front of main body 10.Carried out the opening portion of close/open cooking box 14 via the hinge (not shown) of positive bottom that is arranged on main body 10 by door 11.

As shown in Figure 3, cooking box bottom surface 15 comprises the face of placing objects on it.Cooking box bottom surface 15 comprises that two for putting down the region of two objects thereon.For example, as shown in Figure 3, cooking box bottom surface 15 comprises high temperature side region 15a and low temperature side region 15b.High temperature side region 15a is the region of placing an object, and this object has high temperature while being compared to each other aspect the temperature of two objects.Low temperature side region 15b is the region of placing the object with low temperature.Cooking box bottom surface 15 comprises indicates respectively the high temperature side of high temperature side region 15a and low temperature side region 15b to place mark 16 and low temperature side placement mark 17, and mark 16 and 17 is arranged on to cooking box bottom surface 15 symmetrically.High temperature side is set and places mark 16 and low temperature side and place mark 17 and make the region of object to be placed clear, thereby can prevent that user from misplacing object and preventing from carrying out mistakenly because of misplacing of user heating simultaneously.

As shown in fig. 1, operating unit 20 and display unit 21 are arranged to the right side of door 11 in the drawings.

Operating unit 20 comprises menu option key DIAL, rotating disk/determine key 26, start key 27 and cancel key 28.

Menu option key 25 comprises for providing instruction to set respectively the key of microwave cooking, baking box culinary art and steam cooking; And for providing instruction for example, to set the key of specific culinary art option (, " beverage heating " and " thaw and heat "), for this specific culinary art option pre-programmed such as output and the condition of time.Menu option key 25 comprises and adds hot key 29 simultaneously.Add hot key 29 is that this key will be in following description for providing instruction to set the key of heating simultaneously simultaneously.

In the time being rotated, rotating disk/determine that key 26 receives the selection of manually setting or automatically setting, and the selection of for example heating condition or automatic cooking option.And in the time being pressed, rotating disk/determine key 26 receives determining of the selection made by rotation.

Based on determined culinary art option, heating mode and heating condition, start key 27 receives instruction with start-up operation.Cancel key 28 receives instruction to cancel the selection being received and to determine, or receives instruction to suspend the heating operation having started.For example, while being pressed between the selecting period of heating option or heating condition, cancel key 28 receives instruction with the previously definite selection of resetting.

Display unit 21 display cases are as culinary art option with for the setting of cooking option, and this culinary art option and the setting for culinary art option are selected and make via the mode of operation of operating unit 20 and micro-wave oven 1 by user.

As shown in Figure 5, main body 10 comprises the heating unit with heater 32 and steam generation heater 33 such as magnetron 31 in precalculated position.By such heating unit, micro-wave oven 1 can carry out for example microwave, baking box and Steam Heating/culinary art (culinary art) to the object of putting in cooking box 14.

As shown in Figure 2, for example magnetron 31, waveguide 35 and rotable antenna 36 are arranged in main body 10.

Magnetron 31 (microwave generation unit) is arranged in the bottom between exterior case 13 and the inner casing 12 of main body 10, and provides microwave to cooking box 14 via the bottom of cooking box 14.Control microwave output according to the power providing from inverter 40.The command operating of inverter 40 based on providing from control module 30.

The microwave sending from magnetron 31 is through the waveguide 35 that is connected to magnetron 31.Microwave flows into the bottom of rotable antenna 36, and this rotable antenna 36 is arranged on the basic center of cooking box bottom surface 15 via the coupling aperture 35a of waveguide 35.The microwave being stirred by rotable antenna 36 passes cooking box bottom surface 15, and is entered cooking box 14 by radiation.

Rotable antenna 36 shown in Fig. 4, in the situation that being rotated by antenna driver element 41 or suspending (stopping), is applied to microwave the object being placed in cooking box 14.Rotable antenna 36 is directional aerials, and this directional aerial has the shape of the box of for example bottom surface and its horizontal ends opening, and has the directionality in the direction of horizontal ends opening.Determine the setting for the horizontal ends of opening according to the various factors such as required directionality intensity.

Rotable antenna 36 is set to be positioned at the basic center of cooking box bottom surface 15.Thereby in the time that this rotable antenna 36 is rotated, microwave is provided in cooking box 14 equably.

Antenna driver element 41 shown in Fig. 2 comprises motor, and antenna driver element 41 makes rotable antenna 36 have for example three rotations per second.Antenna driver element 41 is based on rotate/suspend this rotable antenna 36 from the control signal of control module 30.

Aerial position detecting unit 42 comprises, for example microswitch or optical chopper (photointerrupter), and this aerial position detecting unit 42 detects the anglec of rotation of rotable antenna 36 and/or the position of rotable antenna 36.Testing result is offered control module 30 by aerial position detecting unit 42.

Magnetron 31 is provided with current detection circuit.

Fig. 6 is the allocation plan of the circuit that arranges for magnetron 31.

The voltage of the power providing from inverter 40 is provided high frequency transformer secondary windings 51.To there is the alive power of increasing and offer magnetron 31, and magnetron 31 launched microwaves.The connecting terminals of resistance 52 is received to the connection wire of the anode current Ib that wherein flows.By another terminal ground connection of resistance 52, and control module 30 based in resistance 52 produce voltage detect the anode current Ib in magnetron 31, this resistance is current detecting unit 43.

Heater 32 shown in Fig. 5 is arranged on the top (roof) of cooking box 14, and carries out baking box culinary art by sending heat.Steam generates heater 33 and is arranged on the precalculated position between exterior case 13 and inner casing 12, and the water that heating provides from water tank (not shown) carrys out generating steam.The steam generating provides port to offer cooking box 14 via being arranged on for example steam of the side of inner casing 12.

As shown in Figure 2, infrared ray sensor 45 is arranged on the position of cooking box 14 tops.Infrared ray in infrared ray sensor 45 sensing cooking box 14, to detect the temperature in cooking box 14.Infrared ray sensor 45 comprises simple eye infrared ray sensor or compound eye infrared ray sensor.

Based on the instruction from controlling simple eye 30, buzzing unit 46 is with scheduled timing output buzzer, to generate the notice for user.

Via aforesaid when adding hot key 29 and receiving instruction simultaneously, the micro-wave oven 1 of above-mentioned configuration can be with good efficiency of heating surface heating target and there will not be non-uniform temperature simultaneously.To the concrete operations of micro-wave oven 1 be described below.

First, description use is added to hot key 29 simultaneously and set the method for heating simultaneously.Setting this while heating simultaneously, can from user obtain by describe afterwards for object for controlling the information of rotable antenna 36.Control module 30 can be controlled microwave, with according to the kind of object and advantageously heating target of temperature.

Fig. 7 illustrates the transition diagram of the setting program of heating simultaneously.The demonstration (A) to (C) of Fig. 7 is illustrated in operating period display unit 21 the demonstration example that simultaneously adds hot key 29.Display unit 21 comprises that this viewing area shows multiple options that simultaneously heat for the viewing area of " heating simultaneously ".On the left side of this viewing area, show the possible state of temperature of the object on the high temperature side region 15a that is placed on cooking box bottom surface 15.On the right side of this viewing area, show that the object being placed on the 15b of low temperature side region may state of temperature.For each, this heats option simultaneously, and selector marker 61 is indicated the option (black circles instruction selection mode in Fig. 7, and colourless circle instruction nonselection mode) of having been selected by user.

In in menu option key 25, add hot key 29 is pressed to provide instruction to set while heating simultaneously, control module 30 shows display unit 21 to heat the selecteed state of option simultaneously, and this heats option simultaneously and is placed on respective regions for heating simultaneously and has room temperature and freezing object.User adds the necessary number of times of hot key 29 simultaneously and selects to heat option when expectation by pressing.

Subsequently, in the time of user's started by press key 27, control module 30 starts to heat based on the selected option that heats simultaneously simultaneously.Control module 30 based on selected describe after heating option simultaneously and carrying out add thermal control, to complete the heating to being placed on the corresponding object in high temperature side region 15a and low temperature side region 15b simultaneously.

Fig. 8 is the demonstration exemplary plot illustrating for use another setting program of heating when adding hot key 29 simultaneously.

In Fig. 7, the viewing area for " heating simultaneously " in display unit 21, possible high temperature object oriented is presented at left side, and possible low temperature object oriented is presented at right side.More particularly, in the left side of viewing area, the title and the state of temperature thereof that are placed on the possible object in the high temperature side region 15a of cooking box bottom surface 15 are shown as " room temperature curry/stew ", " room temperature companion's dish (accompanying dish) " and " room temperature rice ".On right side, title and the state of temperature thereof that is placed on the possible object in the 15a of low temperature side region is shown as " freezing rice ", " chilled rice ", " freezing companion's dish ", " refrigeration botargo " and " refrigeration curry/stew ".

And, arrange two add hot key 29 in the situation that simultaneously, can set as follows heating simultaneously.

Fig. 9 illustrates the demonstration exemplary plot that simultaneously adds the another setting program that hot key 29 heats simultaneously for using.

The viewing area for " heating simultaneously " in display unit 21, the title of possible high temperature object is presented at left side, and the title of possible low temperature object is presented at right side.With respect to the setting program in Fig. 7 and Fig. 8, user can freely set the combination that is placed on the object in high temperature side region 15a and low temperature side region 15b.

More particularly, in the left side of viewing area, the title and the state of temperature thereof that are placed on the possible object in the high temperature side region 15a of cooking box bottom surface 15 can be selected via add hot key 29a simultaneously, and this adds hot key 29a simultaneously and first adds hot key (simultaneously adding hot key 1) simultaneously.More particularly, provide as the demonstration of " chilled rice ", " freezing rice " and " room temperature rice ".On right side, the title and the state of temperature thereof that are placed on the possible object in the 15b of low temperature side region can be selected via add hot key 29b simultaneously, and this adds hot key 29b simultaneously and second adds hot key (simultaneously adding hot key 2) simultaneously.More particularly, provide as the demonstration of " companion's dish-refrigeration ", " botargo-room temperature ", " curry/stew-refrigeration ", " curry/stew-room temperature ", " raw fish-thaw ".

As the situation in Fig. 7, in the setting program for heating simultaneously shown in Fig. 8 and Fig. 9, add hot key 29 simultaneously or add hot key 29a and 29b sequentially selects to heat option simultaneously simultaneously by pressing.Subsequently, in the time of started by press key 27, start heating simultaneously based on selected one or more options that heat simultaneously.

Heat accordingly option according to what can be set by the user, control module 30 retains the heating condition such as output and/or heat time in advance simultaneously.For example, for be placed at " room temperature " object high temperature side region 15a neutralization " freezing " object be placed on low temperature side region 15b in the situation that time heat option, the output ratio between high temperature side region 15a and low temperature side region 15b is set as 1: 3.Alternatively, be placed on when heating option in high temperature side region 15a neutralization " refrigeration " object is placed on low temperature side region 15b and being set at " room temperature " object, the output ratio between high temperature side region 15a and low temperature side region 15b is set as 1: 1.5.In addition, be placed on when high temperature side region 15a neutralization " freezing " object is placed on low temperature side region 15b and heat option for " refrigeration " object, the output ratio between high temperature side region 15a and low temperature side region 15b is set as 1: 2.Be set so that for the heat time of respective regions 15a and 15b the heating that is placed on the object in high temperature side region 15a and low temperature side region 15b is completed simultaneously.

Heat option for providing in the method for describing with reference to Fig. 8 and Fig. 9 when, calculated by rule of thumb in advance the required output of suitable heating and heat time, and control module 30 retains such heating condition.

The difference of firing rate not only depends on the state of temperature of object, and depends on the water content of object.For example, differ from one another with the firing rate of the object such as rice with little water content for the firing rate of the object such as curry or stew with large water content, although their state of temperature is identical.Therefore,, as in the establishing method with reference to Fig. 8 and Fig. 9 description, use adds hot key 29 simultaneously and comprises those settings for object oriented, makes control module 30 identifying object titles, and therefore, can more advantageously under condition, heat simultaneously.

Heat option based on being selected as mentioned above by user when, control module 30 is controlled rotable antenna 36 and is rotated or suspend in controlling microwave output, heats to carry out effective power.

Figure 10 is the flow chart of the flow process of heating when illustrating according to being carried out by micro-wave oven 1 of the present embodiment.

Whether, in step S1, control module 30 determines whether to set and heat option simultaneously via add hot key 29 simultaneously, and provided in order to start the instruction of heating simultaneously via start key 27 by user.Do not provide in order to start the instruction of heating simultaneously if control module 30 is determined, control module 30 is waited for and is received such instruction.

Provide in order to start the instruction of heating simultaneously if control module 30 is determined, in step S2, control module 30 activates magnetron 31.In step S3, control module 30 starts the rotation of rotable antenna 36.

In step S4, control module 30 obtains the value of the anode current Ib being detected by current detecting unit 43.Control module 30 for example obtains the value of anode current Ib every predetermined amount of time.In step S5, the result of control module 30 based on being detected by aerial position detecting unit 42 determines whether rotable antenna 36 once rotates.In other words, control module 30 determines whether to have detected anode current Ib for all position of rotation that can be obtained by rotable antenna 36.If control module 30 determines that rotable antenna 36 once rotates, control module 30 is back to current value and obtains step S4, and continues to obtain the value of anode current Ib, until rotable antenna 36 has once rotated.

If control module 30 is determined this rotable antenna 36 and has been carried out once rotation, in step S6, have towards the situation of the directionality of high temperature side region 15a and rotable antenna 36 and have each situation in the situation of the directionality of low temperature side region 15b for rotable antenna 36, control module 30 obtains the position of the rotable antenna 36 of anode current Ib maximum.This position of anode current Ib maximum is the little position of impedance in cooking box 14.In other words, the position of the rotable antenna 36 of anode current Ib maximum is the position that micro-wave oven 1 can valid function.

Rotable antenna 36 has towards the situation of the directionality of high temperature side region 15a and means that the opening horizontal ends of rotable antenna 36 points to the situation of a left side half edge regions in Fig. 3.Rotable antenna 36 has towards the situation of the directionality of low temperature side region 15a and means that the opening horizontal ends of rotable antenna 36 points to the situation of the right side half edge regions in Fig. 3.

The value that control module 30 can obtain anode current is not less than the position of the rotable antenna 36 of predetermined value, and anode current Ib has little variation with respect to the anode current of the position of the rotable antenna 36 detecting immediately before or after detecting this position.

In JP 2000-164335A, describe in detail according to the relation between the anode current of the position of rotable antenna 36 and the efficiency of heating surface, therefore omit its detailed description at this.

In the detecting step S6 of position, conventionally, can obtain the anode current Ib changing according to the position of rotable antenna 36.But the electric circuit in micro-wave oven 1 for example occurs that when abnormal, anode current Ib does not change.Therefore, in the time that anode current Ib does not change, control module 30 can provide wrong instruction in display unit 21, and output buzzer to notify user, this is abnormal.

In step S7, control module 30 suspends in low temperature side region 15b Anodic current Ib rotable antenna 36 to have peaked position.Therefore the object, being placed in the 15b of low temperature side region is concentrated because of the directionality of rotable antenna 36 and heating effectively.

In step S8, control module 30 provides the instruction of " antenna time-out " in display unit 21.Alternatively, can be together with instruction " antenna time-outs " or for example substitute instruction " antenna time-out " and show needle, to carrying out the instruction of effect of valid function (, echo operates and carries out).In step S9, control module 30 bases heat option when being set by the user and carry out control inverter 40, to change the output of magnetron 31, to be suitable for being placed on the object in the 15b of low temperature side region.

In step S10, control module 30 determines whether to have passed through according to heat option simultaneously predefined scheduled time T1.Scheduled time T1 is the time period of setting for the object being placed in the 15b of low temperature side region in order to be conducive to heating, and scheduled time T1 for example determines in advance by rule of thumb.Also do not pass through scheduled time T1 if control module 30 is determined, control module 30 is back to step display S8 and repeating step S8 to S10, until elapsed time T1.

If control module 30 is determined elapsed time T1, in step S11, control module 30 suspends in high temperature side region 15a Anodic current Ib rotable antenna 36 to have peaked position.Therefore the object, being placed in the 15a of high temperature side region is concentrated because of the directionality of rotable antenna 36 and heating effectively.

In step S12, control module 30 provides the instruction of " antenna time-out " in display unit 21.The content of step S12 is identical with the content of step display S8.In step S13, control module 30 bases heat option when being set by the user and carry out control inverter 40, to change the output of magnetron 31, to be suitable for being placed on the object in the 15a of high temperature side region.

In step S14, control module 30 determines whether to have passed through according to heat option simultaneously predefined scheduled time T2.Scheduled time T2 is the time period of setting for the object being placed in the 15a of high temperature side region in order to be conducive to heating, and this scheduled time T2 for example determines in advance by rule of thumb.Also there is no elapsed time T2 if control module 30 is determined, control module 30 is back to step display S12 and repeating step S12 to S14, until elapsed time T2.

If control module 30 is determined elapsed time T2, in step S15, control module 30 rotates with the inside of heating cooking case 14 equably this rotable antenna 36.In antenna rotation step S15, rotate this rotable antenna, thereby can suppress because object is locally heated the non-uniform temperature causing.

In step S16, control module 30 has determined whether the heating of object.If the object temperature for example being detected by infrared ray sensor 45 reaches predetermined temperature, control module 30 is determined the heating that has completed object.Also do not complete heating if control module 30 is determined, control module 30 is back to antenna pause step S7, and processing in repeating step S7 and later step thereof.If also do not complete heating, control module 30 can be back to antenna rotation step S15, and carries out heating to rotate this rotable antenna 36, instead of is back to antenna pause step S7.

If control module 30 determines that heating completes completing in determining step S16, control module 30 makes buzzing unit 46 export buzzer, to notify user to heat.

Comprise antenna rotation step S15 although this heats simultaneously, also can not rotate this rotable antenna 36, suspend rotable antenna 36 and heat.And, can omit inverter control step S9 and S13.And, can measure anode voltage Eb but not anode current Ib, to obtain the time-out position that efficient operation is provided of this rotable antenna 36.

In describing with reference to Figure 10, add and hanker, the region of heat intensive is according to switching through scheduled time T1 and T2.The detected temperatures of the object that in addition, the region of heat intensive can be based on as described below is switched.

Figure 11 is the flow chart of another flow process of heating when illustrating according to being undertaken by micro-wave oven 1 of the present embodiment.

Step S21 is similar to startup determining step S1 in Figure 10 to inverter control step S9 substantially to step S29, and therefore at this, the descriptions thereof are omitted.

In step S30, control module 30 determines that whether the temperature that is placed on the object in low temperature side region is higher than the temperature that is placed on the object in high temperature side region.The testing result of the temperature of the object of control module 30 based on obtaining from infrared ray sensor 45 is determined temperature.In other words, control module 30 is carried out, and whether the relation of the temperature levels between object is contrary with the Relationship Comparison before heating.If control module 30 determines that the temperature that is placed on the object in the 15b of low temperature side region is lower than the temperature that is placed on the object in the 15a of high temperature side region, control module 30 is back to step display S28, and repeating step S28 to S30, becomes higher than the temperature that is placed on the object in the 15a of high temperature side region until be placed on the temperature of the object in the 15b of low temperature side region.

If control module 30 determines that the temperature that is placed on the object in the 15b of low temperature side region is higher than the temperature that is placed on the object in the 15a of high temperature side region, in step S31, control module 30 suspends in high temperature side region 15a Anodic current Ib rotable antenna 36 to have peaked position.

Step S32 and step S33 are similar to step display S12 and the inverter control step S13 in Figure 10, and therefore at this, the descriptions thereof are omitted.

In step S34, control module 30 determines that whether the temperature that is placed on the object in the 15a of high temperature side region is higher than the temperature that is placed on the object in the 15b of low temperature side region.The testing result of the temperature of the object of control module 30 based on providing from infrared ray sensor 45 is determined temperature.If control module 30 determines that the temperature that is placed on the object in the 15a of high temperature side region is lower than the temperature that is placed on the object in the 15b of low temperature side region, control module 30 is back to step display S32 and repeating step S32 to S34, becomes higher than the temperature that is placed on the object in the 15b of low temperature side region until be placed on the temperature of the object in the 15a of high temperature side region.

If control module 30 determines that the temperature that is placed on the object in the 15a of high temperature side region is higher than the temperature that is placed on the object in the 15b of low temperature side region,, in step S35, control module 30 determines whether to complete the heating of object.If control module 30 determines heating and also do not complete, control module 30 is back to antenna pause step S27, and processing in repeating step S27 and later step thereof.

If control module 30 determines that heating completes completing in determining step S35, control module 30 makes buzzing unit 46 export buzzer, to notify this heating of user to complete.

In in Figure 11, add and hanker, at random rotate this rotable antenna 36, thereby can prevent because local heat causes occurrence temperature inhomogeneous.

Although whether heating has completed is that temperature according to the object that obtains from infrared ray sensor 45 is determined, but such determining also can be carried out with vapor sensor.The steam that detects cooking box 14 interior generations by vapor sensor makes it possible to determine completing of object heating.Provide cheap vapor sensor to substitute infrared ray sensor 45 and make it possible to reduce manufacturing cost.

According in the micro-wave oven 1 of the present embodiment, for each in high temperature side region 15a and low temperature side region 15b, micro-wave oven 1 heats to suspend in the rotable antenna 36 of the position that efficient operation is provided, and therefore, even if micro-wave oven 1 makes to add at the same time, hanker also can be energy-conservation and temperature heating target equably advantageously.

And micro-wave oven 1 can be by add hot key 29 state and the kind of identifying object in advance simultaneously, thereby determine the microwave output that is suitable for corresponding object in high temperature side region 15a and low temperature side region 15b.Therefore, more advantageously heating target of this micro-wave oven 1.

Although some embodiment of the present invention described above, these embodiment only propose by way of example, and are not intended to limit scope of the present invention.In fact, the embodiment of innovation described here can embody with various other forms; And, in the situation that not departing from spirit of the present invention, can make various omissions, replacement and change to embodiment described herein.Claims and its equivalent are intended to cover the such form or the amendment that fall in scope and spirit of the present invention.

Claims (5)

1. a cooker, comprising:

Main body, described main body forms the cooking box that comprises multiple regions, and each in described multiple regions is for holding therein object;

Microwave generates equipment, and described microwave generation equipment generates microwave;

Rotable antenna, described rotable antenna is by the described microwave being generated by described microwave generation equipment to described cooking box, and described rotable antenna is set up has directionality;

Current/voltage detecting unit, described current/voltage detecting unit, during described rotable antenna rotates at least one times, detects the variation of the curtage of the described microwave generation equipment being associated with the position of described rotable antenna; And

Control module, the described variation of the curtage of described control module based on being detected by described current/voltage detecting unit, the position of rotable antenna described in determining when described microwave generation equipment obtains the operating efficiency that is greater than predetermined value, and described control module suspends in determined position described rotable antenna.

2. cooker according to claim 1, wherein, if passed through predetermined amount of time, described control module switches the described position that described rotable antenna is suspended between described region.

3. cooker according to claim 1, wherein, described cooker also comprises the infrared ray sensor for detection of the temperature in these regions in described cooking box, if there is the predetermined change of the temperature of respective regions, described control module switches the described position that described rotable antenna is suspended between described region.

4. cooker according to claim 1, wherein, described control module comprises display unit, described display unit provides and shows that described rotable antenna is suspended or carries out the demonstration of valid function in the time that described rotable antenna is suspended.

5. cooker according to claim 1, wherein, described microwave generates equipment different output is offered to respective regions.