CN1099860C - Rice insulating method and rice insulating device - Google Patents

Abstract

To prevent cooked rice from putrefaction for reducing the degradation of taste accompanying heat retaining irrespective of cooked rice amount by repeating low heat retaining temperature and high heat retaining temperature while retaining the high heat temperature according to the pint amount of received cooked rice in the heat retaining process. When a first heat retaining process is selected until 12 hours elapse after the completion of rice cooking and an amount of cooked rice in a vessel is less than 1.905 pints (S. 105), low heat temperature retaining is started for five hours and 30 minutes and the temperature of the vessel is detected (S. 107) by a control means until that time elapses (S. 106). When the temperature is not more than 60 deg.C, a heating means, lid heater and temperature retaining heater are electrified (S. 108) to maintain the temperature at 60 deg.C. Next, high temperature heat retaining is started and the temperature retaining heater is electrified (S. 111) until a set heating time elapses (S. 110). S105-S108 are again repeated until 12 hours elapse. After the high temperature heat retaining corresponding to the judgement of the number of pints is carried out (S112, 113) when 11 hours elapse after the rice cooking (S109), the heat retaining is shifted to the normal one.

Description

Rice heat preserving method and rice attemperator

The present invention relates to the pot type rice attemperators such as meal device of cooking a meal.

Existing pot type is cooked a meal in the rice attemperators such as meal device, the temperature of the rice that is being incubated uses the pot temperature detector that contacts with the bottom of a pan to detect, this information is sent to control part, to heater coil power supply to reach predetermined insulation design temperature, for example 72 ℃ and the stainless steel that constitutes pot and the stainless steel layer that is laminated with material of aluminium are heated with the electromagnetic induction mode of heating.And control part adopts electronic control mode to the input of the heater of heat retaining and exothermal body and lid, adds heat when irrespectively giving certain, insulation with the insulation amount of rice, and the rice temperature remains in 72 ℃ of insulation design temperatures.

With this existing rice attemperator, warmth sensation is arranged when having a meal, but can not prevent rice deterioration at high temperature, in fact, long-time insulation down the rice deterioration, become yellowish-brown, or have distinctive insulation smell, and an also variation of edible rerum naturas such as viscosity, elasticity.

In order to solve this problem, and use the low temperature holding temperature lower to be incubated, to prevent to cause that owing to the rice oxidation method that the situation of insulation smell, flavescence, edible rerum natura variation takes place has been understood by people than used up to now insulation design temperature, but, with this method can cause corruption thereby, smell but also method that can sterilization are made up, not only prevented to be incubated to new the proposition with the low temperature insulation with soak.

Adopt the insulation of this method to be illustrated according to Figure 14.Now, make temperature when the low temperature holding temperature rises to the soak temperature, the temperature of pot temperature detector for example be set in 80 ℃ carry out common insulation, pot temperature detector more than to 80 ℃ then, the heater coil of pot promptly cuts off the power supply, drop to i.e. energising below 80 ℃, the rice in the pot is controlled in 80 ℃ gradually.

In this case, as shown in figure 14, under the few situation of rice amount (closing number), for example 1 close, the bottom of a pan reached 80 ℃ and the rice temperature inside reached 80 ℃ after 30 minutes in about 1 minute.The bottom of a pan reached 80 ℃ in about 3 minutes under 5 situations of closing, and rice inside reach 80 ℃ will be with 2 hours.The bottom of a pan reached 80 ℃ in 5 minutes under 10 situations of closing, and will spend 4 hours and rice inside reaches 80 ℃.

Make its saturated temperature-controlled process that the temperature of rice is sharply risen at design temperature like this.And under the different situation of the appetite (closing number) of insulation, when adopting identical heating input, under the few situation of the appetite (closing number) of insulation, heat too much, heating is very few under the many situations of appetite (closing number).Thereby the 1st problem of existence is that the fat components in the rice, protein and carbohydrate generation oxidation, decomposition, combination reaction show as the rice flavescence, the insulation smell arranged, the phenomenon that edible rerum natura degenerates.

And second problem is, is raised to the soak temperature in a flash, keeps the regular hour under this temperature, then reduces to the low temperature holding temperature rapidly, can improve the taste of meal.But the too high or overlong time of soak temperature, result be just like insulation at high temperature, or the insulation deterioration improves effect and diminish, or variation on the contrary.

The 3rd problem be, the temperature of rice descends and when keeping certain temperature, or when judging the appetite (closing number) of insulation when rice heats up, the influence owing to being subjected to factors such as room temperature, variation in voltage has the situation that can not accurately judge appetite.

The objective of the invention is to solve the problem of above-mentioned existence, provide, reduce the rice heat preserving method and the rice warmer of the taste deterioration of the meal that causes owing to insulation no matter the rice amount how much, can prevent that rice is putrid and deteriorated.

In order to reach this purpose, the 1st kind of way of the present invention is to have the soak temperature that at high temperature rice is incubated, with low temperature holding temperature with the temperature insulation lower than described soak temperature, be incubated the rice heat preserving method that the soak of this insulation operation is simultaneously carried out according to the appetite (closing number) of the rice that holds repeatedly repeatedly in described low temperature holding temperature and described soak temperature.

And the 2nd kind of way is, has the soak temperature that the rice temperature is remained in high temperature, low temperature holding temperature with the temperature insulation lower than described soak temperature, and the common holding temperature between described soak temperature and described low temperature holding temperature, insulation under described low temperature holding temperature and the described soak temperature is carried out within a certain period of time, at regular intervals repeatedly once, through behind the certain hour, be set in common holding temperature, judge the rice amount of holding in this insulation operation (closing number) simultaneously, carry out the rice heat preserving method of corresponding soak according to appetite.

The 3rd kind of way then is different from the 1st insulation operation that is set in low temperature holding temperature, soak degree and common holding temperature, is the rice heat preserving method with the 2nd insulation operation that usually is set in common holding temperature.

And the 4th kind of way is to select the rice heat preserving method of the 1st insulation operation and the 2nd insulation operation.

The 5th kind of way is to have the soak temperature that at high temperature keeps the rice temperature, the low temperature holding temperature that is incubated under than the low temperature of described soak temperature, and the common holding temperature between described soak temperature and described low temperature holding temperature, tool and be equipped with described low temperature holding temperature and described soak temperature under insulation in the regular hour, carry out, per regular hour repeatedly, behind certain hour, be set in the 1st insulation operation of common retening temperature, different with the 1st insulation operation, usually be set in the second insulation operation of common holding temperature, and the amount (closing number) of judging the rice that holds in the 1st insulation operation, by the rice heat preserving method of appetite (closing number) the judgement operation of the requirement output of carrying out corresponding soak.

The 6th kind of way is to select the rice heat preserving method of the 1st insulation operation and the 2nd insulation operation in the predefined stipulated time arbitrarily.

The 7th kind of way is to have the output of judging operation according to appetite (closing number), selects the rice heat preserving method of the insulation operation selection operation of the 1st insulation operation and the 2nd insulation operation arbitrarily.

The 8th kind of way is, the insulation under the 1st insulation operation, low temperature holding temperature and soak temperature is carried out within a certain period of time, at regular intervals repeatedly, behind certain hour, the rice heat preserving method that before being set in common holding temperature, under the soak temperature, is incubated.

The 9th kind of way is after the 1st insulation operation reaches the low temperature holding temperature, then transfers to the rice heat preserving method of soak temperature through certain hour.

But the 10th kind of way is to use the lid with switch, the container that holds rice, heat the heater of described container, detect the temperature-detecting device of the temperature in the described container, control aforementioned heater according to the output of aforementioned temperature checkout gear, rice is carried out the control device of preservation and controlling, the selecting arrangement of selecting arbitrarily to use the insulation operation of described control device to use, and described control device comprises and has the soak temperature, the 1st insulation operation of low temperature holding temperature and the common holding temperature between them, with be different from the 1st the insulation operation, often be set in the rice warmer of the 2nd insulation operation of common holding temperature.

The 11st kind of way is to use has the rice amount (closing number) that judgement is held in the 1st insulation operation, judges the rice warmer of operation corresponding to the appetite that requires output power (closing number) of the soak of appetite (closing number) according to implementation.

The 12nd kind of way is to use has the rice warmer of insulation operation display unit that shows the state that is the 1st insulation operation or the 2nd operation in the 1st insulation operation or the 2nd insulation operation.

And the 13rd kind of way of the present invention is to use the rice attemperator with following feature; This device has the pot that holds rice, but the lid of switch, detect the room temperature detector of room temperature, the heater of the rice in the heating kettle, detect the pot temperature checkout gear of the temperature of pot, and control the control device that described heater is incubated according to the temperature that the pot temperature checkout gear detects; Aforementioned control device has low temperature holding temperature and two holding temperatures of doing after meal of soak temperature, when doing temperature decline after meal, judge the appetite (closing number) of insulation according to drop to information that needed time of the 2nd design temperature and room temperature detector come from the 1st design temperature, make rice add thermal control with the heating condition of formulating according to appetite (closing number) determination information when the low temperature holding temperature rises to soak and spends.

The 14th kind of way of the present invention is to use the rice attemperator with following feature: possess the pot that holds rice, lid to be opened/closed, the voltage check device of the input voltage of checkout gear, the heater of the rice in the heating kettle, detect the pot temperature checkout gear of the temperature of pot, according to controlling the control device that aforementioned heater is incubated with the detected temperature of pot temperature checkout gear; This control device has low temperature holding temperature and two holding temperatures of doing after meal of soak temperature, judge insulation appetite (closing number) according to making rice be raised to the required time of the 4th design temperature from the 3rd design temperature when the low temperature holding temperature is warmed up to the soak temperature with the information that obtains from voltage check device, add thermal control according to the heating condition that with this appetite (closing number) determination information is foundation.

The 15th kind of way of the present invention is to use the rice attemperator with following feature: possess the pot that holds rice, lid to be opened/closed, make the power supply stabilising arrangement of the input electrical power stabilization of device, the heater of the rice in the heating kettle, detect the pot temperature checkout gear of the temperature of pot, control the control device that described heater is incubated according to the detected temperature of pot temperature checkout gear; This control device, have two holding temperatures of doing after meal of low temperature holding temperature and soak temperature, according to making rice make it be warmed up to the appetite (closing number) that information that required time of the 4th design temperature and voltage check device obtain is judged insulation with certain electric power heating when the low temperature holding temperature is warmed up to the soak temperature, add thermal control with the heating condition that draws according to this appetite (closing number) from the 3rd design temperature.

The 16th kind of way of the present invention is to use the rice attemperator that possesses following feature: possess the pot that holds rice, but the lid of switch, detect the room temperature detector of room temperature, the heater of the rice in the heating kettle, detect the pot temperature checkout gear of the temperature of pot, control the control device that described heater is incubated according to the detected temperature of pot temperature checkout gear; The holding temperature that control device has low temperature holding temperature and two of soak temperature after finishing the cooking, in the certain hour of low temperature insulation with the pot temperature checkout gear according to being the amount (closing number) that the information that keeps power-on time that the low temperature holding temperature powers and room temperature detector to obtain is judged the rice that is incubated, make rice when the low temperature holding temperature is warmed up to the soak temperature being that the heating condition of foundation adds thermal control according to appetite (closing number) determination information.

Adopt the 1st kind of way, because implementation and the corresponding soak of rice amount (closing number) no matter the rice amount how, can both prevent that rice is putrid and deteriorated, reduce the degree that is incubated the rice taste deterioration that causes.

Adopt the 2nd kind of way, except the effect that the 1st kind of way arranged, can also carry out the insulation under soak temperature, low temperature holding temperature and common three kinds of conditions of holding temperature.

Adopt the 3rd kind of way, be different from the 1st insulation operation, have the 2nd insulation operation that usually is set in common holding temperature, so can carry out best insulation.

Adopt the 4th kind of way can freely select the 1st insulation operation and the 2nd insulation operation, can carry out more suitable insulation.

Adopt the 5th kind of way, low temperature holding temperature and described soak temperature are between certain hour, each is fixed time repeatedly, behind certain hour, be set in common holding temperature, in the 1st insulation operation and the 2nd heat insulating work, judge the rice amount of in the 1st insulation operation, holding (closing number) simultaneously, carry out corresponding soak according to the aforementioned rice amount (closing number) that records.Can alleviate rice with this descends because of the rice quality that the low temperature insulation causes, and owing to carry out and the corresponding soak of rice amount (closing number), therefore no matter what can suppress because the rice taste variation that superheated causes the rice amount, and also can sterilization when in rice, having putrefactivebacteria, can prevent the propagation of putrefactivebacteria.

Adopt the 6th kind of way, can in predetermined certain hour, select the 1st, the 2nd insulation operation arbitrarily, reach effective insulation.

Adopt the 7th kind of way, can select, set the 1st insulation operation or the 2nd insulation operation automatically corresponding to the rice amount of holding.

Adopt the 8th kind of way, can before being transformed into the common holding temperature that the rice putrefactivebacteria is difficult to breed, carry out sterilization, therefore can set incorrupt temperature retention time to greatest extent.

Adopt the 9th kind of way, owing to the low temperature holding temperature can be set in the incorrupt limit of rice, thereby can suppress to be incubated the rice quality deterioration that causes to greatest extent.

Adopt the 10th kind of way can obtain to alleviate because the rice quality deterioration that insulation causes, simultaneously no matter the rice amount what, can both suppress because the rice taste variation that causes of superheated, even and have spoilage organisms in the rice, also can sterilization, prevent the rice warmer of spoilage organisms breeding.

Adopt the 11st kind of way, can obtain to implement the rice warmer of the appropriate soak that adapts with rice amount (closing number).

Adopt the 12nd kind of way, can obtain to show, confirming with insulation operation display unit the rice warmer of insulation operation.

Adopt the 13rd kind of way, judge the appetite (closing number) that is incubated with the information of room temperature detector from the 1st design temperature to the 2 design temperatures required time that descends when descending according to the back temperature of finishing the cooking.Is that the best heating condition of foundation add thermal control in order to appetite (closing number) determination information making rice when the low temperature holding temperature as the holding temperature after finishing the cooking rises to the soak temperature.Suppress to be incubated shoddyization of meal that causes and carry out sterilization with this, can in insulation, keep the well tasting of rice.

Adopt described the 14th kind of way, make rice when the low temperature holding temperature rises to the soak temperature, according to rising to the needed time of the 4th design temperature from the 3rd design temperature and detecting the number that closes that information that the voltage check device of the input voltage of input unit obtains is judged the insulation appetite, making rice when the low temperature holding temperature rises to the soak temperature rapidly, use the heating condition that draws according to appetite (closing number) determination information to add thermal control.Suppress in insulation, to keep the well tasting of rice with this owing to be incubated shoddyization of meal that causes and carry out sterilization.

Adopt described the 15th kind of way, make rice when the low temperature holding temperature rises to the soak temperature, make from the 3rd design temperature by the electrical power stabilization device to rise to the required time stabilisation of the 4th design temperature, thereby can not be subjected to input voltage change ground to judge insulation appetite (closing number).According to this appetite (closing number) determination information, control heating with best heating condition, can suppress because shoddyization of meal that insulation causes carried out sterilization with this, and in insulation, keep the well tasting of rice.

Fig. 1 is to use the profilograph of the rice warmer of rice heat preserving method of the present invention.

Fig. 2 represents the block diagram of the structure relevant with the control device of the same rice warmer.

Fig. 3 is the flow chart of above-mentioned control device.

Fig. 4 is the flow chart of other examples of the above-mentioned control device of expression.

Fig. 5 is the insulation program of above-mentioned rice heat preserving method of expression and rice warmer.

Fig. 6 is the cook a meal profile of meal device of the pot type of the present invention the 13rd embodiment.

Fig. 7 is cook a meal the low temperature insulation of meal device and the process chart of soak operation of the same pot type.

Fig. 8 is the cook a meal figure of appetite (the close number) decision method of meal device when temperature descends of the same pot type of expression.

Fig. 9 be the pot type of the present invention the 14th embodiment cook a meal the meal device want portion's profile.

Figure 10 represents the same appetite (the close number) decision method of meal device when heating up of cooking a meal.

Figure 11 represents the relation of insulation appetite (closing number) with the heating-up time and the input voltage of the same meal device of cooking a meal.

Figure 12 be the pot type of the present invention the 15th embodiment cook a meal the meal device want portion's profile.

Figure 13 is the same pot type each is fixed time when cooking a meal insulation appetite (closing number) and the low temperature insulation of meal device the heating graph of a relation of input time.

The relation that Figure 14 represents to cook a meal existing pot type amount (closing number) and the temperature of meal device when heating rice rise.

With reference to the accompanying drawings one embodiment of the invention are illustrated.In Fig. 1, the 1st, hold the container of rice; The 2nd, thus heater carries out preservation and controlling to rice control device controlled with the output of following temperature-detecting device, have rice is incubated soak temperature under high temperature, low temperature holding temperature that is incubated under than the low temperature of described high-temperature temperature and the common holding temperature between soak temperature and aforementioned low temperature holding temperature, insulation under aforementioned low temperature holding temperature and the aforementioned soak temperature is between certain hour, each is fixed time repeatedly once, through behind the certain hour, be set in the 1st insulation operation of common holding temperature, different with the 1st insulation operation, often be set in the 2nd insulation operation of common holding temperature and judge the rice amount of holding in the 1st insulation operation (closing number), output power is judged operation to carry out with the appetite (closing number) of the corresponding soak of the rice amount of judging (closing number).

Described appetite (closing number) is judged operation, and the method for considering has: the method for observing the thermograde in the certain hour; Observation reaches needed time method till certain temperature; Or after ending energising midway, observe temperature and get back to that to end required time of temperature etc. various, what method can.

The 3rd, heat the heater of described container 1, also can use sealed heater, constitute by load coil in the present embodiment.The 4th, the lid heater, 5 are provided in a side of the heat retaining and exothermal body of the upper periphery of container 1, the 6th, touch with the bottom connection of described container 1, detect the temperature-detecting device of inner rice temperature, the 7th, the temperature-detecting device of the temperature of detection lid, the 8th, but the lid of switch, the 9th, the operation inputting part that machine is operated, the firing switch with machine etc. have the selecting arrangement 11 that the 1st insulation operation and the 2nd that is used for any device for selection controlling 2 is incubated operation again.The 10th, when being in the 1st insulation operation or the 2nd insulation operation, show it is the insulation operation display unit that the 1st insulation operation or the 2nd is incubated the state of operation.

And described control device 2 is the numbers that close that are used for judging the rice amount held, select described the 1st insulation operation or the 2nd insulation operation according to this result, and have from described the 1st insulation operation and be incubated insulation operation relay switching time of switching automatically to described the 2nd insulation operation, holding temperature relay switching time that also has automatic switchover low temperature holding temperature and soak temperature, and is set the time that detect to arrive the low temperature holding temperature again, make the insulation pickup time relay of action beginning, in the actuating of relay of described insulation pickup time, control heating make its between low temperature holding temperature and soak temperature repeatedly.

And control low temperature holding temperature is in 55 ℃-70 ℃, and the soak temperature is in 75 ℃-95 ℃, and holding temperature is in 71 ± 6 ℃ usually, the concrete design temperature of each among Fig. 5 in the illustrative embodiments.

Secondly, as shown in Figure 2, control device 2 holds the temperature of the container 1 of rice from temperature-detecting device 6 inputs, covers 8 temperature from temperature-detecting device 7 inputs.Then these input data are judged, send energising or cold order to heater 3, lid heater 4, heat retaining and exothermal body 5.Be incubated the keeping warm mode of operation and demonstration on this display unit 10 to described the 1st insulation operation of insulation operation display unit 10 outputs or the 2nd again.

The cook a meal insulation action of meal device is illustrated to the pot type of the present invention, embodiment below with reference to Fig. 3, Fig. 5.

At first, meal one carries out, be incubated promptly and begin, measure meal with control device 2 and carry out the back elapsed time, judged whether to have selected the 1st insulation operation (step 101,102) with control device 2 in the past in 12 hours at effluxion always, passed through 12 hours or non-selected the 1st the insulation operation situation under, transfer to common holding temperature the 2nd the insulation operation.Detect the temperature (step 103) of container 1 at the 2nd insulation process temperature checkout gear 6, feed back to control device 2 on one side, the temperature of the container 1 that temperature-detecting device 6 records less than 72 ℃ situation under, on one side to heater 3, lid heater 4,5 energisings (step 104) of heat retaining and exothermal body, the temperature maintenance of the container 1 that temperature-detecting device 6 is measured is in 72 ℃.When being in this state, control device 2 is to 10 outputs of insulation operation display unit and show the situation that is in the 2nd insulation operation.

Under the situation of step 102, selection the 1st insulation operation, by means of the rice amount (closing number) (step 105) in the control device 2 judgement containers 1.In this embodiment, carrying out twice rice amount as shown in Figure 5 judges.Here, the rice amount is closed 5 and is entered above-mentioned the 2nd insulation operation under the above situation; Close next the 1st insulation operation that enters of following situation 5.The 1st insulation operation at first begins the insulation in the low temperature holding temperature.The time of low temperature insulation is 5 and a half hours, before passing by during this period of time (step 106), detect the temperature (step 107) of container 1 on one side with temperature-detecting device 6, feed back to control device 2, on one side under the temperature of the container 1 that temperature-detecting device 6 records is lower than 60 ℃ situation, the temperature of the container 1 that records with holding temperature checkout gear 6 to heater 3, lid heater 4,5 energisings (step 108) of heat retaining and exothermal body is in 60 ℃.

Then, after through the low temperature temperature retention time, promptly begin the high-temperature temperature insulation.In abovementioned steps 105, according to the rice amount of judging close number in predetermined heat time heating time (step 110), by 2 pairs of heaters 3 of control device, lid heater 4, the predefined thermopower (step 111) that adds of heat retaining and exothermal body 5 energising outputs.In case, before setting-up time, the meal of the 1st insulation operation are carried out past back 12 hours, repeat appetite (closing number) judgement, abovementioned steps 106, step 107, the step 108 of abovementioned steps 105 once more through the high-temperature temperature temperature retention time.After meal is carried out through (step 109) in 11 hours, carry out judge the soak (step 112,113) that draws according to described appetite (closing number) after, transfer to the 2nd insulation operation of above-mentioned common insulation.In the 1st insulation operation, the situation that will be in the 1st insulation operation by control device 2 outputs to insulation operation display unit 10 and is shown.

Moreover, in the process of the 2nd insulation operation,, shown in Fig. 5 dotted line, during from selection, carry out the 1st insulation operation in case selecting arrangement 11 is selected the 1st insulation operation (the arrow A of Fig. 5).And the insulation program of Fig. 3 is an example, and time, holding temperature, pattern etc. are all considered various variation.

Below with reference to Fig. 4, Fig. 5 the insulation action of the pot type kitchen device of other embodiment is illustrated.

At first, rice one is carried out, insulation promptly begins, control part 12 is measured the elapsed time after rice is carried out, control device 2 judges whether to have selected the 1st insulation operation (step 201,202) before through 12 hours, passed through 12 hours or non-selected the 1st the insulation operation situation under, transfer to the 2nd the insulation operation.In the 2nd insulation operation, detect the temperature (step 203) of container 1 on one side with temperature-detecting device 6, feed back to control device 2, on one side in the temperature of the container 1 that temperature-detecting device 6 records below 72 ℃ the time, to heater 3,5 power supplies (step 204) of lid heater 4, heat retaining and exothermal body, the temperature of the container 1 that records with holding temperature checkout gear 6 is in 72 ℃.In this state, control device 2 will be in the situation of the 2nd insulation operation to 10 outputs of insulation operation display unit, be shown.

Under the situation of selecting the 1st insulation operation, with the rice amount (closing number) (step 205) in the control device 2 judgement containers 1.In the rice amount is 5 to close under the above situation, enters above-mentioned the 2nd insulation operation; Close under the following situation 5, enter the 1st operation.The 1st insulation operation is from the insulation of low temperature holding temperature.The low temperature temperature retention time is the time, promptly 5 and a half hours that the accumulation till 60 ℃ to 72 ℃ of the temperature that may breed from the rice spoilage organisms is calculated, at first, with the temperature (step 206) of temperature-detecting device 6 detection containers 1.Calculate the accumulated time after arriving below 72 ℃, (step 207) temperature-detecting device 6 detects the temperature of containers 1 before through 5 and a half hours, if temperature in (step 208) below 60 ℃ then to heater 3,5 energisings (step 209) of lid heater 4, heat retaining and exothermal body, with the temperature of temperature-detecting device 6 mensuration containers 1, it is maintained at 60 ℃.

Then, low temperature temperature retention time one promptly begins to be incubated at high-temperature temperature in the past.The rice amount of judging corresponding to described step 205 (closing number) predefined heat time heating time in the past before (step 201), by control device 2 to heater 3, lid heater 4, the 5 energising outputs of heat retaining and exothermal body predetermined add thermopower (step 211).High-temperature temperature temperature retention time one in the past, the setting-up time of the 1st insulation operation, be meal carry out back 12 hours in the past before, the appetite (closing number) that repeats above-mentioned steps 205 once more judges and abovementioned steps 206, step 207, step 208.After meal is carried out through (step 212) in 11 hours, through after the above-mentioned high-temperature temperature insulation (step 213,214), transfer to above-mentioned the 2nd insulation operation.In the 1st insulation operation, control device 2 will be in the situation of the 1st insulation operation and export, makes its demonstration to insulation operation display unit 10.

With reference to the accompanying drawings the 13rd embodiment of the present invention is illustrated.Present embodiment is that heat preservation technology is used for the pot type meal device of cooking a meal.

In Fig. 6, the pot made from the composite of stainless steel and aluminium 61 has been adorned Mi Yushui heating and has been cooked.Pot temperature checkout gear 64 is set at the end of the inside casing 63 of main body 62 to be contacted with the bottom of pot 61.On the end of inside casing 63, be provided with again constitute by electromagnetic induction heating coil, be used for heater 65 that the rice in the pot 61 is heated.And equip control device 66 with high frequency electric source, this high frequency electric source can be controlled aforementioned heater 65 according to pot temperature checkout gear 64 detected temperature and be incubated.

Above-mentioned control device 66 has the holding temperature after low temperature holding temperature (for example 60 ℃) and two meals of soak temperature (for example 92 ℃) are carried out, drop to the 2nd design temperature (for example 61 ℃) the needed time and judge appetite (closing number) from the 1st design temperature (for example 72 ℃, identical) when descending from the information of room temperature detector 612 with common insulation design temperature according to temperature after carrying out at meal, make rice when the low temperature holding temperature rises to the soak temperature, add thermal control according to the heating condition that with appetite (closing number) determination information is foundation.Describe in detail to omit, insulation is identical with prior art usually, is that temperature with rice is controlled in and is incubated 72 ℃ of design temperatures.

Again at the top of inside casing 63 equipment heat retaining and exothermal body 67.Be located on the main body 62, switchably cover on the heat liberation board 69 of lid 68 of pot 61 tops, be provided with and cover heater 610 and cover temperature-detecting device 611.In the bottom of main body 62 room temperature detector 612 is set again.And in the top of main body 62 setting operation panel part 614.

In said structure, in case select low temperature insulation-soak process, as shown in Figure 7, the insulation after meal is carried out in low temperature insulation operation, for example 60 ℃, will suppress insulation by insulation and cause the situation of shoddyization of meal to take place.Appetite when descending (closing number) criterion about temperature, as shown in Figure 8, when 60 ℃ of low temperature holding temperatures descended, the temperature of test example such as pot temperature checkout gear 64 dropped to the temperature fall time of 61 ℃ of the 2nd design temperatures from 72 ℃ of the 1st design temperatures from 72 ℃ of design temperatures of insulation.Simultaneously by room temperature detector 612 detections room temperature at this moment.

Table 1 expression room temperature detector 612 detects the appetite (closing number) of the detected temperatures that obtains, insulation, from fall time of the 1st design temperature to the 2 design temperatures.

Table 1. insulation appetite (closing number) and fall time (branch) from the 1st design temperature to the 2 design temperatures

Appetite (closing)	The temperature that room temperature detector records
					-5℃	5℃	20℃	35℃
	1 closes	4.0 divide	5.0 divide	7.5 divide					12.0 divide
3 close					8.0 divide	9.5 divide	13.5 divide	20.0 divide
	5 close	11.0	13.0 divide	19.0 divide					30.0 divide

And the relation of table 2. expression insulation appetite (closing number) and heating condition.

Table 2 appetite (closing number) and heating condition (heat time heating time, branch)

Appetite (closing)	Heating condition (heat time heating time)
		1 closes	9.0 divide
3 close	21.0 divide
		5 minutes	32.0 divide

For example, when table 1, room temperature detector 612 were measured as-5 ℃, when being 4.0 minutes fall time from the temperature of the 1st design temperature to the 2 design temperatures, the insulation appetite was judged to be 1 and closes, and heated in 9 minutes with being suitable for the heating condition that one in the table 2 close.Again, room temperature detector 12 is measured as 20 ℃, judge when temperature is 19 minutes fall time that the insulation appetite is 5 to close, and carries out 32 minutes heating.Like this, by means of room temperature detector 612 and the temperature appetite (closing number) that fall time, judgement was incubated, owing to be fit to the suitable heating of insulation appetite (closing number), do not make heating surpass the needs of sterilization, suppressed so be incubated shoddyization of meal that causes.

In addition, the same with prior art in common insulating process, the rice temperature is controlled in 72 ℃ of insulation design temperatures.

The 14th embodiment of the present invention is with the different of the 13rd embodiment, as shown in Figure 9, the voltage check device 613 of the input voltage of checkout gear is set.

In this embodiment, in case select low temperature insulation-soak process, holding temperature for example drops to 60 ℃ and can suppress to be incubated shoddyization of meal that causes from for example being incubated 72 ℃ of design temperatures.Keep certain hours at 60 ℃, suppress shoddyization of meal that insulation causes, still, in order to prevent because assorted microbial corruption, from 60 ℃ of beginnings of the 3rd design temperature for example by control device 66 to heater 65 power supplies, to pot 61 and inner rice heating.Shown in appetite (the closing number) criterion during as the intensification of Figure 10, measure pot temperature checkout gear 64 and measure temperature is raised to 92 ℃ of the 4th design temperatures from 60 ℃ of the 3rd design temperatures heating-up time.Detect the voltage of input unit at this moment by voltage check device 613 again.

Figure 11 represents to be incubated appetite (closing number) and is warmed up to the heating-up time of the 4th design temperature and the relation of voltage from the 3rd design temperature.For example under input voltage is 100 volts situation, insulation appetite (closing number) and pot temperature checkout gear 4 record from 60 ℃ to 92 ℃ heating-up time and have proportionate relationship, 1 fashionable be 200 seconds, 5 fashionable be 255 seconds, thereby might judge appetite (closing number) according to the heating-up time.According to this appetite (closing number) determination information, as shown in table 2, be to carry out 32 minutes heating under 5 situations of closing for example at the insulation appetite.By means of this; Can be fit to the heating (closing number), suitable of insulation appetite, thus the heating of sterilization needs do not surpassed, so the meal poor qualityization that insulation can be caused suppresses in Min..

Also have, even from 60 ℃ to 92 ℃ heating-up time be 255 seconds, judge that at input voltage the insulation appetite is 5 to close during for 100V, be judged to be 3.5 at voltage during for 90V and close, close and when 110V, be judged to be 6.5.Under the situation of input voltage change, the input electric power during heating is such change, thereby appetite (closing number) can not get accurate judgement.Thereby voltage check device 613 is set, because based on this information, for example under the situation of 90V, the heating-up time is 275 seconds, is judged to be 5 and closes, and can judge appetite (closing number) very accurately.With this, even under the situation of input voltage change, also can be suitable for being incubated the suitable heating of appetite, thereby when pasteurization, can not surpass and need heating, shoddyization of the meal inhibition subthreshold that can cause insulation.

The 15th embodiment of the present invention is different with the 14th embodiment to be, as shown in figure 12, is provided for making the electrical power stabilization device 615 of the electrical power stabilization of input unit.

Shown in the 14th embodiment, when heating up heating, if the input voltage change, even insulation appetite (closing number) is identical, the heating-up time also will change, and electrification stabilising arrangement 615 can often stably be supplied electric power, thereby the influence of variation in voltage is eliminated.Can obtain in a word the 100V example of insulation appetite shown in Figure 11 and the relation of heating-up time such, not the insulation appetite of influence by voltage and the relation of heating-up time, thereby can judge appetite exactly.By means of this, even under the situation that input voltage changes, also can be fit to be incubated the suitable heating of appetite, so when pasteurization, do not add heat, shoddyization of the meal inhibition subthreshold that insulation can be caused above the sterilization needs.

The structure of present embodiment 16 identical with shown in the embodiment 13, the pot temperature checkout gear 64 and the room temperature detector 612 that detects room temperature that possess the temperature of perception pot 61, be determined at 60 ℃ of the 3rd design temperatures, when being incubated with uniform temperature, keep 60 ℃ of heating input times required, each (for example 15 minutes) lining of fixing time, judge rice insulation amount (closing number) according to two information of room temperature that keep required heating input time of cryogenic temperature and record.

Figure 13 represents to be incubated the heating input time in appetite (closing number), the certain hour and the relation of room temperature, for example, in 20 ℃ of room temperatures, heating is input time that the insulation appetite is judged to be 1 and closes, and is as shown in table 2 by the 1 heating condition heating of closing 9 minutes under 10 seconds the situation.Again, in 5 ℃ of room temperatures, heating be input time that the insulation appetite is judged as 5 and closes under 22 seconds the situation, the heating condition that closes by 5 of table 2 carries out 32 minutes heating.By means of this, under the situation of room temperature change, also can be fit to be incubated the suitable heating of appetite, thereby can when pasteurization, be no more than and need superheated, thus shoddyization of the meal inhibition subthreshold that can cause insulation.

As mentioned above, the present invention has soak temperature and low temperature holding temperature, according to the insulation under rice amount (closing number) the implementation soak temperature of holding.By means of This move, because the low temperature holding temperature is low, thereby can alleviate shoddyization of rice that insulation causes, and owing to be provided with and the corresponding soak temperature of rice amount (closing number), no matter the rice amount how much, can suppress the rice taste deterioration that superheated causes, and exist under the situation of spoilage organisms also can sterilization in rice, can prevent the propagation of spoilage organisms.

And the insulation operation has the 1st insulation operation and the 2nd insulation operation, thereby can realize best insulation.

Can select the 1st, the 2nd insulation operation again arbitrarily, thereby can more effectively be incubated.

Can also select, set the 1st insulation operation or the 2nd insulation operation automatically according to the rice amount of holding, and easy to use.

And carry out sterilization transferring to the normal temperature holding temperature eve that the rice spoilage organisms is not easy to breed, thereby can set to greatest extent corrupt temperature retention time does not take place.

Because the low temperature holding temperature can be set to rice always corrupt boundary not taking place again, thereby can suppress to be incubated shoddyization of meal that causes to greatest extent.

Can alleviate shoddyization of meal that insulation causes again, simultaneously no matter what all can suppress because the situation that the rice taste that superheated causes degenerates the rice amount, and existing in rice under the situation of putrefactivebacteria also can sterilization, is the rice warmer that can prevent spoilage organisms propagation.

This rice warmer can also be carried out the appropriate soak that adapts with rice amount (closing number).

This rice warmer can also show, confirm the insulation operation with insulation operation display unit.

As mentioned above, the present invention can carry out the back temperature according to meal and drop to the needed time of the 2nd design temperature from the 1st design temperature, and these two kinds of information of room temperature detector is judged insulation appetite (closing number) by means of the 13rd kind of way.By means of this, can be with causing that the little low temperature holding temperature of shoddyization of meal degree is incubated, make the rice temperature rapidly when this low temperature holding temperature rises to the soak temperature, can be that the only heating condition of foundation adds thermal control in order to the appetite determination information, can suppress to be incubated shoddyization of meal that causes, and can carry out sterilization, guarantor's meal rice of features good taste can be provided.

And use the 14th kind of way, make the rice temperature when the low temperature holding temperature rises to the soak temperature rapidly, according to the voltage detecting of the voltage check device that rises to needed time of the 4th design temperature and checkout gear input voltage from the 3rd design temperature as a result these two information judge insulation appetite (closing number), in view of the above, can be that the only heating condition of foundation adds thermal control when the low temperature holding temperature rises to the soak temperature rapidly making the rice temperature in order to the appetite determination information, can suppress to be incubated shoddyization of meal that causes and carry out sterilization, the insulation rice of features good taste is provided.

Use the 15th kind of way, make the rice temperature when the low temperature holding temperature rises to the soak temperature rapidly, in order to prevent that the rice temperature from rising to the needed time of the 4th design temperature from the 3rd design temperature and changing because of input voltage, setting makes the electrical power stabilization device of the heating electrical power stabilization of input, thereby can be when heating up judges the insulation appetite from the heating-up time of the 3rd design temperature to the 4 design temperatures.By means of this, promptly when rising to the soak temperature, the low temperature holding temperature can add thermal control in the rice temperature with the best heating condition that draws according to the appetite determination information, can suppress shoddyization of rice and the sterilization that insulation causes, and the insulation rice of features good taste is provided.

Use the 16th kind of way, the insulation appetite that the pot temperature checkout gear records in the certain hour when being incubated according to low temperature, keep required electric power input time of low temperature holding temperature and two information judgements of room temperature detected value rice, when heating up rapidly, the soak temperature can add thermal control from the low temperature holding temperature at rice according to the best heating condition that the appetite determination information draws, thereby can suppress rice matter because of insulation deterioration and sterilization, the insulation rice of features good taste can be provided.

Claims (11)

1. rice heat preserving method, it is characterized in that, the low temperature holding temperature that has the soak temperature that at high temperature keeps the rice temperature and be incubated under than the low temperature of described soak temperature, intersection is incubated under described low temperature holding temperature and described soak temperature repeatedly with official hour, described soak temperature is the number that closes according to the rice amount simultaneously, the heating of change in the stipulated time set input time, adds heat so that add the sterilization that heat is no more than needs.

2. rice heat preserving method, it is characterized in that, possess the soak temperature that at high temperature keeps the rice temperature is arranged, the low temperature holding temperature that is incubated under than the low temperature of described soak temperature, and the common holding temperature between described soak temperature and described low temperature holding temperature; Described low temperature holding temperature and insulation under the described soak temperature in official hour, intersect carry out repeatedly after, transfer to the 1st insulation operation that described common holding temperature is incubated, simultaneously, judge the number that closes of the described rice amount of holding, described soak temperature is the number that closes according to the described rice amount of holding, the heating of change in the stipulated time set input time, adds heat so that add the sterilization that heat is no more than needs.

3. rice heat preserving method according to claim 2 is characterized in that, has the 2nd insulation operation that often is set in common holding temperature.

4. rice heat preserving method according to claim 3 is characterized in that, has the 1st insulation operation and the 2nd is incubated the selecting arrangement that operation is selected.

5. according to claim 3 or 4 described rice heat preserving methods, it is characterized in that having and in predefined certain hour, select the insulation operation of the 1st insulation operation and the 2nd insulation operation to select operation arbitrarily.

6. according to claim 3 or 4 described rice heat preserving methods, it is characterized in that, close number at the rice that holds and surpass under the predefined situation, carry out the 2nd insulation operation.

7. rice heat preserving method according to claim 2 is characterized in that, is incubated with the soak temperature before transferring to common holding temperature at least.

8. rice heat preserving method according to claim 1 is characterized in that, guarantees that at least official hour carries out the insulation under the low temperature holding temperature.

9. rice warmer, it is characterized in that, have can switch lid, the container that holds rice, heat the heater of described container, detect the temperature-detecting device of the temperature in the described container, described heater is controlled and is carried out the control device of rice preservation and controlling according to the output of described temperature-detecting device, the selecting arrangement that any selection is used with the insulation operation of described control device control, described control device possesses, and the soak temperature is arranged, the 1st insulation operation of the common holding temperature of low temperature holding temperature and between and be different from the 1st insulation operation, often be set in the second insulation operation of common holding temperature.

10. rice warmer according to claim 9 is characterized in that, has judgement and closes number at the 1st rice that holds of insulation operation, and output is carried out the rice that closes the required electric power of soak that number adapts with rice and closed number and judge operation.

11. rice warmer according to claim 10 is characterized in that, has the insulation operation display unit that shows in the 1st insulation operation or the 2nd insulation operation under the state that is in the 1st insulation operation or the 2nd insulation operation.

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