WO2005103569A1 - 加熱調理器及び加熱調理方法 - Google Patents
加熱調理器及び加熱調理方法 Download PDFInfo
- Publication number
- WO2005103569A1 WO2005103569A1 PCT/JP2005/007241 JP2005007241W WO2005103569A1 WO 2005103569 A1 WO2005103569 A1 WO 2005103569A1 JP 2005007241 W JP2005007241 W JP 2005007241W WO 2005103569 A1 WO2005103569 A1 WO 2005103569A1
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- WIPO (PCT)
- Prior art keywords
- heating chamber
- heating
- steam
- temperature
- fan
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/647—Aspects related to microwave heating combined with other heating techniques
- H05B6/6473—Aspects related to microwave heating combined with other heating techniques combined with convection heating
- H05B6/6479—Aspects related to microwave heating combined with other heating techniques combined with convection heating using steam
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
- F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
- F24C15/327—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation with air moisturising
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/08—Arrangement or mounting of control or safety devices
Definitions
- the present invention relates to a heating cooker and a heating cooking method for heating and cooking by supplying steam to a heating chamber.
- heating cookers that can perform high-frequency heating and steam heating simultaneously or independently by adding a steam generation function to a microwave oven that can perform high-frequency heating have become widely used as mass-produced products.
- Became When cooking by steam heating in this type of cooking device, ideally the steam density is close to 100% and the temperature is suitable for food (for example, 80 ° C for eggs, meat for meat) It is important to keep the temperature at 98 ° C or 100 ° C or more for steamed potatoes in order to ensure quick and reliable cooking.
- Patent Document 1 discloses a steam heating cooker in which the ambient temperature in a heating chamber is set by adjusting the partial pressure of steam (volume ratio occupied by steam) in the heating chamber.
- Patent Document 1 JP-A-63-254320
- cooking the bowl crockfish 202 by oven heating that circulates high-temperature hot air in the heating chamber 201 requires a longer time than cooking by steam heating, and the finished state is not good.
- the heating temperature is set at 150 ° C and the final temperature is about 96 ° C to 98 ° C when cooking (F)
- the cooking is done by steam heating. (F) (see Fig. 7)
- the central portion 205b is not solidified, resulting in insufficient heating.
- heating is performed using air as a heat transfer medium, so that there is a limit to increasing the amount of heat transfer to the object 202 to be heated, and there is a large temperature difference between the surface and the inside of the object 202 to be heated. Is generated, and it is often difficult to quickly and uniformly heat the object to be heated 202.
- the ambient temperature in the heating chamber is reduced to a temperature lower than 100 ° C, such as 90 ° C, by mixing outside air with steam at 100 ° C. Is set.
- outside air is introduced through a hole (outside air communication part) provided in a part of the heating chamber, and diffusion with steam is only diffusion due to the rising action of the supplied steam. Had a small and difficult to obtain a sufficient diffusion state. Therefore, it has not been possible to quickly and accurately set the desired atmospheric temperature in the heating chamber, and it has been still difficult to stably and successfully carry out the above-mentioned cooking.
- the present invention has been made in view of the above circumstances, and when heating an object to be heated using steam, the atmosphere temperature in the heating chamber is quickly and accurately set to a temperature suitable for cooking. It is an object of the present invention to provide a heating cooker and a heating cooking method capable of cooking an object to be heated by uniform steam heating.
- a heating controller for supplying steam to a heating chamber for accommodating an object to be heated and heating the object to be heated comprising: steam supply means for supplying steam to the heating chamber; A fan for stirring the supplied steam; and a temperature control for controlling the ambient temperature in the heating chamber to a temperature lower than the temperature of the supplied steam by rotating the fan. And a cooking device.
- the steam supplied into the heating chamber by the steam supply means is agitated by the rotation drive of the fan by the temperature control means, whereby the temperature of the atmosphere in the heating chamber is supplied.
- the temperature can be controlled to be lower than the temperature of the steam. That is, it is possible to set the heating chamber to an arbitrary temperature suitable for cooking, and it is possible to quickly and reliably perform heating cooking such as egg cooking that requires accurate temperature setting.
- the provision of the heating means for raising the ambient temperature in the heating chamber can reduce the dew condensation due to the generated steam, and also reduce the ambient temperature in the heating chamber. It can be maintained above the desired temperature.
- the heating chamber is partitioned via a partition plate from a circulation fan chamber in which the fan is disposed, and the partition plate has a ventilation hole communicating the heating chamber and the circulation fan chamber.
- the steam rising from the evaporating dish is sucked by the ventilation fan for the suction provided in the partition plate and circulated by the circulating fan, and is sent to the partition plate via the circulating fan chamber. It is blown out from the ventilation hole for wind into the heating chamber. The blown-out steam is stirred in the heating chamber, and is again sucked into the side of the circulation fan chamber for ventilation of the partition plate, thereby forming a circulation path between the heating chamber and the circulation fan chamber.
- the outside air supply means is a blowing means for sucking outside air to generate a wind, an air supply ventilation passage for guiding the wind from the blowing means to the heating chamber, and an inside of the heating chamber.
- the cooking device according to any one of (1) to (3), further comprising: an exhaust ventilation passage for discharging the air.
- An air supply side shutter for limiting a flow rate is provided upstream of a connection position of the air supply ventilation passage with the heating chamber, the air supply side shutter being provided. Heating cooker.
- the flow rate of the air supply ventilation path can be freely changed by providing the air supply side shutter on the upstream side of the flow path of the air supply ventilation path, and the outside air supply to the heating chamber is achieved.
- the amount can be changed.
- An exhaust-side shutter for limiting a flow rate is provided downstream of the connection position of the exhaust ventilation passage with the heating chamber, the exhaust-side shutter being provided (5) or (6). ).
- An upper / lower dividing plate for vertically dividing the space in the heating chamber is provided, and a communicating portion connecting the upper and lower spaces is formed between the heating chamber and the upper / lower dividing plate.
- the heating chamber is divided by the upper and lower partitioning plates, and steam is supplied to the lower space below, so that the steam supplied to the lower space rises, and the communication section Gather in the upper space through. This action promotes the agitation of the steam and makes the steam density in the space above the heating chamber uniform.
- the heating and cooking method is characterized in that the steam supplied into the heating chamber is agitated to control the ambient temperature in the heating chamber to a temperature lower than the temperature of the supplied steam.
- the steam supplied into the heating chamber is driven by rotating the fan.
- the temperature of the atmosphere in the heating chamber can be controlled to be lower than the temperature of the supplied steam. That is, the heating chamber can be set to any temperature suitable for cooking, and heating cooking such as egg cooking that requires accurate temperature setting can be performed quickly and reliably.
- the effect of lowering the ambient temperature in the heating chamber can be enhanced by increasing the rotation speed of the fan.
- the rotation speed it becomes possible to control the ambient temperature in the heating chamber.
- the effect of lowering the ambient temperature in the heating chamber is enhanced by shortening the rotation drive cycle of the fan.
- the rotation drive cycle it becomes possible to control the ambient temperature in the heating chamber.
- the temperature of the atmosphere in the heating chamber is set lower than the temperature of the supplied steam by stirring the steam supplied into the heating chamber.
- the temperature of the atmosphere in the heating chamber can be quickly and accurately lowered to a temperature suitable for cooking the object to be heated.
- FIG. 1 is a front view showing a state in which an open / close door of a cooking device according to the present invention is opened.
- FIG. 2 is an explanatory diagram of a basic operation of the cooking device.
- FIG. 3 is a block diagram of a control system of the cooking device.
- FIG. 4 is a graph showing a time change of an ambient temperature in a heating chamber with respect to each rotation speed of a circulation fan.
- FIG. 5 A chart showing a heating and cooking pattern of teacup steaming by “steam supply + heater heating”. It is.
- FIG. 6 is an example in which the ambient temperature in a heating chamber is sequentially set to different temperatures by switching the rotation speed of a circulating fan, and is a chart in the case where the set temperature is gradually lowered as time passes.
- FIG. 7 This is an example in which the ambient temperature in the heating chamber is sequentially set to different temperatures by switching the rotation speed of the circulating fan.
- Fig. 7 is a chart diagram when an arbitrary set temperature is set according to the passage of time. It is.
- FIG. 8 is a chart showing an example in which the ambient temperature in the heating chamber is set to a different temperature by switching the rotation driving cycle of the circulation fan.
- FIG. 9 is an explanatory diagram showing a state of steam when a space in a heating chamber is divided into upper and lower portions by a tray.
- FIG. 10 is a perspective view showing a modification of the tray.
- FIG. 11 is a cross-sectional view illustrating a state in which the tray illustrated in FIG. 10 is accommodated in a heating chamber.
- FIG. 12 is a plan view showing a schematic configuration of a supply / exhaust mechanism of the cooking device.
- FIG. 13 is an explanatory diagram showing a case in which tea bowl steaming is regulated by oven heating in which high-temperature hot air is circulated in a conventional heating chamber.
- Fig. 14 is a plan view of chawanmushi in which the surroundings of the bowl have been nested by conventional heating and cooking.
- Fig. 15 is a plan view of steamed teacup in a state where the central portion is not solidified without being heated by conventional cooking.
- FIG. 1 is a front view showing a state in which an opening / closing door of a heating cooker according to the present invention is opened
- FIG. 2 is an explanatory diagram of a basic operation of the cooking device
- FIG. 3 is a block diagram of a control system for controlling the cooking device. It is.
- the heating cooker 100 is a heating cooker that supplies at least one of a high frequency wave (microwave) and steam S to a heating chamber 11 that accommodates an object to be heated, and heats the object to be heated.
- a tray 22 which is detachably disposed on the upper side and serves as a partition plate for vertically dividing the heating chamber 11 into upper and lower portions.
- the heating chamber 11 is formed inside a box-shaped main body case 10 having an open front, and a heated object outlet of the heating chamber 11 is provided on the front surface of the main body case 10.
- Open and close An opening / closing door 21 with a translucent window 21a is provided.
- the opening / closing door 21 can be opened and closed in the vertical direction by having its lower end hinged to the lower edge of the main body case 10.
- a predetermined heat insulating space is secured between the wall surfaces of the heating chamber 11 and the main body case 10, and a heat insulating material is loaded in the space as needed.
- the magnetron 13 is disposed, for example, in a space below the heating chamber 11, and a stirrer blade 33 (or a rotating antenna or the like) as a radio wave stirring means is provided at a position receiving the high frequency generated by the magnetron 13. Is provided. Then, by irradiating the rotating stirrer blades 33 with the high frequency from the magnetron 13, the high frequency is supplied into the caro heat chamber 11 while being stirred by the stirrer blades 33.
- the magnetron 13 ⁇ stirrer blades 33 may be provided not only at the bottom of the heating chamber 11 but also at the upper surface or the side surface of the heating chamber 11.
- a circulation fan chamber 25 containing a circulation fan 17 and its driving motor 23 is arranged, and a wall force on the rear surface of the heating chamber 11 is provided.
- An inner wall surface 27 that defines the heating chamber 11 and the circulation fan chamber 25 is provided.
- Each ventilation hole 29, 31 is formed as a number of punch holes.
- the hot-air generator 14 includes a circulation fan 17 and a competition heater 19. That is, the circulation fan 17 is arranged at a substantially central position of the rectangular inner wall surface 27. In the circulation fan chamber 25, a rectangular annular competition heater 19 is provided so as to surround the circulation fan 17. Then, the ventilation holes 29 for intake formed in the rear side wall surface 27 are arranged on the front surface of the circulation fan 17, and the ventilation holes 31 for ventilation are arranged at a position along the rectangular annular competition heater 19. .
- the steam supply unit 15 includes an evaporating dish 35 having a water recess 35a that generates steam S by heating, and an evaporating dish 35 provided below the evaporating dish 35.
- An evaporating dish heating heater 37 for heating is provided.
- the evaporating dish 35 is, for example, an elongated shape in which a concave portion is formed in a stainless steel plate material.
- the evaporating dish 35 has a longitudinal direction along the back side wall surface 27 on the back side bottom surface of the heating chamber 11 opposite to the outlet of the object to be heated. It is arranged in the right direction.
- the evaporating dish heating heater 37 has a configuration in which a heat block made of an aluminum die cast in which a heating element such as a force sheath heater not shown is embedded is brought into contact with the evaporating dish 35.
- a plate heater or the like that can heat the evaporating dish 35 with radiant heat from a glass tube heater or a sheathed heater may be attached to the evaporating dish 35.
- a water storage tank 53 for storing water to be supplied to the evaporating dish 35, a water pump 55, and a discharge port face the evaporating dish 35 in the main body case 10.
- the water supply line 57 is located.
- the water stored in the water storage tank 53 is appropriately supplied to the evaporating dish 35 via the water supply pipe 57 in a desired amount.
- the water storage tank 53 is compactly buried in the side wall of the main body case 10 where the temperature is relatively low, so that the apparatus itself does not become large when assembled into the apparatus.
- the water storage tank 53 is detachably attached by being pulled out from the side of the main body case 10 to the outside.
- the water storage tank 53 may be configured to be disposed on the lower surface side which may be disposed on the upper surface side of the apparatus by performing heat insulation treatment.
- the upper heater 16 is a plate heater, such as a my heater, for preheating the heating chamber 11 and heating for grill cooking, and is disposed above the heating chamber 11. Further, a sheathed heater may be used instead of the plate heater.
- the thermistor 20 is provided on the wall surface of the heating chamber 11 and detects the temperature in the heating chamber 11. Further, on the wall surface of the heating chamber 11, an infrared sensor 18 capable of simultaneously measuring the temperature at a plurality of locations (for example, eight locations) is swingably disposed. The scanning operation in which the infrared sensor 18 is swung allows the temperature of a plurality of measurement points in the heating chamber 11 to be measured. The placement position can also be known.
- a tray 22 as a partition plate for upper and lower divisions was formed on the side wall surface 11a, lib of the heating chamber 11. It is detachably supported by the locking portion 26.
- the locking portions 26 are provided in a plurality of stages so as to support the tray 22 at a plurality of height positions of the heating chamber 11. By locking the tray 22 to the locking portion 26, the heating chamber 11 is divided into an upper space 11A and a lower space 11B.
- FIG. 3 is a block diagram of a control system of the heating cooker 100.
- This control system is mainly configured by a control unit 501 including, for example, a microphone processor.
- the control unit 501 mainly exchanges signals with the input operation unit 507, the display panel 509, the high-frequency generation unit 12, the steam supply unit 15, the hot air generation unit 14, the upper heater 16, the shutter opening / closing drive unit 50, and the like. And control these parts.
- the temperature control section 501 functions as a temperature control means for controlling an atmosphere temperature in the heating chamber 11 described later.
- the input operation unit 507 is provided with various keys such as a start switch, a heating method switching switch, and an automatic cooking switch. And heat cook.
- the high-frequency generator 12 is connected to a motor (not shown) for driving a magnetron 13 stirrer blade 33, and a cooling fan 32 for cooling the magnetron.
- An evaporating dish heater 37 and a water pump 55 are connected to the steam supply section 15, and a circulation fan 17 and a competition heater 19 are connected to the hot air generation section 14.
- the shutter opening / closing drive unit 50 is connected to an air supply-side shutter 51 and an exhaust-side shutter 52.
- the food to be heated M is placed on a dish or the like, enters the heating chamber 11, and the opening / closing door 21 is closed.
- Various settings such as a heating method, a heating time, and a heating temperature are performed by operating the input operation unit 507, and when the start button is pressed, the heating is automatically performed by the operation of the control unit 501.
- the temperature of the steam S circulating in the heating chamber 11 can be set to a higher temperature. . Therefore, so-called superheated steam is obtained, and cooking with browning the surface of the object to be heated M is also possible.
- the magnetron 13 is turned on, and the stirrer blades 33 are rotated to supply high-frequency waves into the heating chamber 11 while stirring uniformly, so that there is no unevenness and high-frequency heating cooking is performed. It can be carried out.
- the heating cooker 100 uses the magnetron 13, the hot air generator 14, the steam supply unit 15, and the upper heater 16 individually or in combination to provide a heating method most suitable for cooking.
- Heated object M can be heated.
- the temperature in the heating chamber 11 during cooking is measured by the infrared sensor 18 and the thermistor 20, and based on the measurement result, the control unit 501 controls the magnetron 13, the upper heater 16, and the competition.
- the cushion heater 19 and the like are appropriately controlled. If the infrared sensor 18 that can measure the temperature of a plurality of locations at the same time is used, the temperature of a plurality of measurement points in the heating chamber 11 can be quickly measured by swinging the infrared sensor 18 and scanning the inside of the heating chamber 11. Accurate measurement is possible.
- the infrared sensor 18 measures the temperature by the thermistor 20 in a case where the temperature in the heating chamber 11 may not be measured correctly when the heating chamber 11 is filled with the steam S.
- the heating cooker 100 of the present invention drives the circulation fan 17 to rotate so that the ambient temperature in the heating chamber 11 is lower than the temperature of the supplied steam.
- V has a function to control the temperature!
- Figure 4 shows the change over time of the ambient temperature in the heating chamber for each rotation speed of the circulation fan.
- the heating fan 11 Tends to decrease as the rotation speed increases.
- the temperature of the steam S generated from the evaporating dish 35 is about 100 ° C. because the water is boiled and taken out, but the steam S and the air in the heating chamber 11 are stirred.
- the temperature of the generated gas mixture G is below 100 ° C.
- the circulating fan 17 is rotated, gaps formed on the wall and upper and lower surfaces of the heating chamber 11 (seam of sheet metal, gaps between the door 21 and the like), holes (holes for detecting the temperature of the infrared sensor 18). , Etc.), a small amount of outside air is introduced into the heating chamber 11, and the introduced outside air is stirred with the steam S in the heating chamber 11, so that the temperature of the mixed gas G decreases. Therefore, by rotating and driving the circulation fan 17, it becomes possible to control the ambient temperature in the heating chamber 11 to a desired temperature optimal for cooking at 100 ° C. or less.
- the heating time when heating at an ambient temperature close to 100 ° C., if the heating time is not set correctly, cooking will end up failing, especially when temperature management of egg dishes or the like is difficult.
- the rotation of the circulation fan 17 is controlled and the ambient temperature in the heating chamber 11 is set in advance to a temperature suitable for adjustment (a temperature lower than 100 ° C.)
- the cooking time may be longer than a specified time. If you continue cooking, cooking will not fail.
- Fig. 5 shows the cooking pattern of tea bowl steaming by “steam supply + heater heating”.
- the bowl containing the material to be heated M is placed on the tray 22 (partitioning plate for upper and lower divisions), put into the heating chamber 11, and the opening / closing door 21 is closed.
- the user operates the input operation unit 507 to set the heating method, heating time, heating temperature, and the like, and starts cooking by pressing the start button.
- the circulation fan 17 is rotated to circulate hot air through the heating chamber 11 for a predetermined time (for example, one minute) while generating heat in the competition heater 19 as a preheating step.
- a predetermined time for example, one minute
- Preheating can also be carried out by means of the heater 13.
- the upper heater 16 is heated to maintain a predetermined time (for example, 30 seconds). Thereby, the inside of the heating chamber 11 is heated to a preheating temperature of 45 ° C to 50 ° C.
- the evaporating dish heater 37 is heated to heat and evaporate the water in the water recess 35a of the evaporating dish 35 to generate steam S. Then, the temperature inside the heating chamber 11 is gradually increased by the steam S supplied to the heating chamber 11, and the temperature of the bowl, which is the object to be heated M, is gradually increased accordingly. Note that, in order to make the temperature distribution uniform by heating, the circulation fan 17 may be intermittently rotated according to the temperature rise in the heating chamber 11 during this heating period.
- heating set temperature here is set to a temperature lower than the temperature of the generated steam 100 ° C, and the generated steam S is cooled to a temperature of 100 ° C or less by the stirring of the steam by the rotation of the circulation fan 17.
- the circulation fan 17 is rotationally driven by the drive motor 23 to generate a circulation airflow in the heating chamber 11.
- the steam S filled in the heating chamber 11 is sucked into the circulation fan chamber 25 from the airflow introduced into the heating chamber 11 through the ventilation holes 31 on the back side wall surface 27 and the ventilation holes 29 on the suction side.
- the air flow actively agitates and heat exchange takes place, causing the temperature to drop.
- the supply amount of the steam S is reduced, and the upper heater 16 is instead heated. This prevents the amount of steam from becoming excessive and causing condensation on the door and the wall of the heating chamber. Further, the inside of the heating chamber 11 is maintained at a predetermined set temperature by compensating for the decrease in the steam supply amount by the heat generated from the upper heater 16.
- the power supply amount of the steam supply at this time is set by a load distribution or duty control so that the sum of the power supply amount to the upper heater 16 and the power supply amount does not exceed the range of the rated power. It should be noted that a competition heater 19 may be used or used in place of the upper heater 16.
- the heating by the upper heater 16 and the heating by the steam S are used together to While the heating process is continued, the temperature inside the heating chamber 11 is maintained at a predetermined set temperature by rotating the circulation fan 17.
- the freezing point temperature of the egg is approximately 78 ° C to 82 ° C
- the cooking is terminated when the temperature of the tea bowl steaming 90 exceeds the freezing point region.
- the time required to complete the cooking of the chawanmushi 90 is about 20 minutes.
- the main heat transfer medium is steam S, so that the amount of energy transferred when the heat transfer medium is air as in the case of oven heating is smaller. growing. Therefore, the object to be heated M can be heated more quickly, and further, the heat exchange effect is good, so that the object to be heated M can be uniformly heated from the periphery to the inside thereof. In this way, it is possible to prevent insufficient coagulation due to the occurrence of nesting and insufficient heating, particularly in the heating cooking of chawanmushi 90.
- the heating set temperature is set to a temperature lower than the temperature of the generated steam 100 ° C, the temperature of the atmosphere in the heating chamber 11 becomes longer for the egg to pass through the freezing point region of the egg. As a result, heat penetrates into the object to be heated M, so that a good-quality tea bowl steaming can be stably obtained. Also, even if the cooking time is exceeded with heating, the temperature will not be excessively high, so it will not be affected by this and cooking will not fail.
- Fig. 6 and Fig. 7 are charts showing examples in which the ambient temperature in the heating chamber is sequentially set to different temperatures by switching the rotation speed of the circulating fan, and Fig. 6 is an example in which the set temperature is gradually lowered over time.
- FIG. 7 shows an example in which the temperature is set arbitrarily according to the passage of time.
- the ambient temperature in the heating chamber 11 when the rotation speed of the circulation fan 17 is controlled to increase or decrease in the order of na, then nc, and then nb, the ambient temperature in the heating chamber 11 also changes accordingly.
- the temperature is raised and lowered. That is, by changing the rotation speed of the circulation fan 17, the ambient temperature in the heating chamber 11 can be reduced to an arbitrary temperature.
- the atmospheric temperature in the heating chamber 11 can be freely changed by controlling the rotation speed of the circulation fan 17 to increase or decrease. Can be quickly and accurately adjusted to the desired heating chamber temperature below 100 ° C
- FIG. 8 is a chart showing an example in which the ambient temperature in the heating chamber is set to a different temperature by switching the rotation driving cycle of the circulation fan.
- the rotation drive cycle means the time until the next ON time when the ON / OFF of the rotation of the circulation fan is duty-controlled.
- the ambient temperature in the heating chamber will also rise accordingly. -Cool down. That is, by shortening the rotation driving cycle of the circulation fan 17, the effect of lowering the ambient temperature in the heating chamber 11 is enhanced. According to this method as well, the atmosphere temperature in the heating chamber 11 can be freely changed, as described above, and the desired heating room temperature of 100 ° C. or less can be quickly and accurately adjusted.
- the vapor density means the occupied density of water vapor in a gas mixture of water vapor generated from the evaporation H35 and air.
- the amount of water vapor present per unit volume increases as a result, the temperature of the gas mixture G approaches 100 ° C.
- the vapor density decreases, the amount of water vapor per unit volume decreases, and the temperature of the mixed gas G decreases.
- This steam density can be arbitrarily controlled by adjusting the rotation speed of the circulation fan 17.
- the mixed gas G in which the steam S is mixed has a lower specific gravity than the outside air, and thus tends to move upward in the heating chamber 11. Therefore, the mixed gas G having a uniform vapor density generated in the lower space 11B of the heating chamber 11 flows between the edge of the tray 22 and the inner wall of the heating chamber 11 (sidewall surfaces 11a, lib and the inner wall surface 27). Gather in the upper space 11A through the gap. Therefore, in the upper space 11A above the tray 22, the mixed gas G having a predetermined temperature lower than 100 ° C. is collected by agitation, and substantially the whole of the space becomes a predetermined constant temperature atmosphere.
- the lower space 11B mainly functions as a space for stirring the steam S
- the upper space 11A is a conditioning space in which a uniform temperature is maintained.
- the mixed gas G having a uniform vapor density in the lower space 11B is uniformly supplied to the upper space 11A along the gap between the tray 22 and the inner wall of the heating chamber.
- the temperature in A is a uniform predetermined temperature regardless of the location.
- the steam S is supplied into the heating chamber 11 while the circulation fan 17 blows the inside of the heating chamber 11, so that the heating chamber 11
- the supplied steam S is actively stirred, and the inside of the heating chamber 11 can be set to a desired atmospheric temperature. That is, a mixed gas G in which the steam S is sufficiently diffused into the air in the heating chamber 11 is generated, and the mixed gas G becomes lower than the temperature of the supplied steam S. Therefore, the inside of the heating chamber 11 can be set to any temperature suitable for cooking, and heating cooking such as egg cooking that requires accurate temperature setting can be performed quickly and reliably.
- a tray 22 that divides the heating chamber 11 into upper and lower portions is provided, and the steam S is supplied to the lower space 11B below the tray 22, so that the supplied steam S is supplied from the lower space 11B.
- the steam S from the evaporating dish 35 provided in the heating chamber 11 is supplied. Is supplied into the heating chamber 11, the configuration can be simplified as compared with the case where a boiler device is provided outside the heating chamber 11, and dirt such as scale attached to the evaporating dish 35 can be easily wiped off. And maintain a sanitary environment easily.
- the above-described tray 22 may have the following configuration!
- FIG. 10 is a perspective view showing a modification of the tray
- FIG. 11 is a cross-sectional view showing a state where the tray shown in FIG. 10 is housed in the heating chamber.
- a plurality of opening holes 40b penetrating vertically are formed in an edge portion 40a on the back side and the front side.
- the opening 40b need not be formed on both the back side and the near side as long as it is provided at a position facing the steam supply unit 15, but by providing the opening 40b on both sides, the direction of the tray 40 can be improved. It can be attached to the heating chamber 11 without being aware of the temperature, improving handling and performance.
- the mixed gas G generated by stirring the steam and the outside air in the lower space 11B of the heating chamber 11 is reliably supplied to the upper space 11A through the opening 40b of the tray 40. Therefore, the object to be heated M placed on the tray 40 may be heated in an atmosphere in which the entire object to be heated M is enveloped in the vapor S without locally strongly blowing the mixed gas G to the object to be heated M. It will be possible. Further, the rising steam S flows through the upper and lower spaces due to the opening holes 40b of the tray 40, and the stagnation of the steam S in the upper space 11A is eliminated. In addition to the provision of the opening hole 40b in the tray 40, a concave portion may be formed in the wall surface of the heating chamber 11, and a flow may be formed from the concave portion through the upper and lower spaces.
- the heating cooker 200 of the present embodiment is provided with a supply / exhaust mechanism that adds the configuration of the heating cooker 100 of the above-described first embodiment and actively introduces outside air and actively discharges air in the heating chamber. Have.
- FIG. 12 is a plan view showing a schematic configuration of a supply / exhaust mechanism of the cooking device.
- the heating cooker 200 of the present embodiment includes an air supply ventilation passage 81 for guiding outside air to the heating chamber 11, an exhaust ventilation passage 85 for exhausting the air in the heating chamber 11, It is equipped with an intake side shutter 51, an exhaust side shutter 52, and a shutter opening / closing drive unit 50 (see FIG. 3).
- the configuration is provided with an exhaust unit that exhausts the steam supplied to the caro heat chamber 11 from the heating chamber 11. Yes.
- the air supply port 82 connected to the air supply ventilation passage 81 is located at the lower side of the side wall surface 11a on the left side of the heating chamber 11 close to the opening / closing door 21 shown in FIG. And is open to the lower space 11B of the heating chamber 11. Further, an exhaust port 86 is provided at a lower end of the right side wall surface lib of the heating chamber 11 on the far side of the heating chamber 11 shown in FIG. 1 and opens to the lower space 11B of the heating chamber 11.
- the air supply port 82 is provided between the outer surface of the main body case 10 and the side wall surface 11a of the heating chamber 11, and between the outer surface of the main body case 10 and the inner side wall surface 27.
- an air supply-side shirt 51 that can be freely opened and closed is provided in the middle of the air supply ventilation passage 81. Then, the air from the cooling fan 32 for cooling the magnetron provided integrally with the magnetron 13 is blown into the heating chamber 11 from the air supply port 82 via the air supply ventilation passage 81 by switching the air supply side shutter 51. I can put it out.
- the cooling fan 32 may be used by separately providing a blower fan 60 as shown in the block diagram of Fig. 3 which is not limited to the fan for magnetron cooling. If the outside air is directly supplied to the heating chamber 11 by the blower fan 60, the temperature in the heating chamber 11 may be rapidly cooled. The air heated by cooling the magnetron 13 with the heater is supplied to the heating chamber 11.
- the exhaust port 86 communicates with an exhaust ventilation passage 85 secured between the outer surface of the main body case 10 and the side wall surface l ib of the heating chamber 11, and in the middle of the exhaust ventilation passage 85.
- An openable / closable exhaust side shirt 52 is provided.
- the exhaust ventilation passage 85 communicates with the outside through a discharge port 87. Then, by opening the exhaust-side shutter 52, the air in the heating chamber 11 can be exhausted to the outside together with the supply of air into the heating chamber 11!
- the air supply side shutters 51 and the exhaust side shutters 52 are formed of, for example, dampers that are constantly urged in one direction by springs or the like, and the dampers are oscillated by electromagnetic force or the like, and the air supply ventilation passages 81 and The exhaust ventilation passage 85 can be selectively held in an open or shielded state.
- the damper may be configured to be in the closed state and the open state by the wind pressure, and in this case, the shutter mechanism is further simplified.
- Supply side shirt 51 and exhaust side shirt 52 In order to prevent the steam in the heating chamber 11 from suddenly leaking to the outside, the heating chamber 11 is closed except when air supply and exhaust are required.
- the outside air sucked from the outside by the cooling fan 32 is blown into the heating chamber 11 from the air supply port 82 through the air supply ventilation passage 81 and the air supply side shutter 51.
- the air in the heating chamber 11 is exhausted from the exhaust port 86 to the outside through the exhaust ventilation passage 85, the exhaust side shutter 52, and the discharge port 87.
- the air in the heating chamber 11 flows on a substantially diagonal line of the heating chamber 11, so that the air is efficiently stirred and ventilated.
- this heating cooker 200 while steam is supplied into the heating chamber 11, the air from the blowing means is introduced into the heating chamber 11 through the air supply ventilation passage 81, and the exhaust ventilation passage is provided. Since the air in the heating chamber 11 is discharged from 85, the steam supplied into the heating chamber 11 is positively stirred by the outside air, so that the inside of the heating chamber 11 can have a desired steam density. That is, a mixed gas G in which the steam is sufficiently diffused into the air in the heating chamber 11 is generated, and the temperature of the mixed gas G is lower than the temperature of the supplied steam. Therefore, even in the heating cooker 200 of the present embodiment, it is possible to more efficiently set the heating chamber 11 to an arbitrary temperature suitable for cooking at 100 ° C. or lower, and it is necessary to set an accurate temperature. Heating such as egg cooking can be performed quickly and reliably.
- the air supply side shutter 51 and the exhaust side shutter 52 are not limited to those maintained in an open state or a shielded state, and the degree of opening of the air supply ventilation path 81 and the exhaust ventilation path 85 is arbitrary. It may be one that can be set to. In this case, fine temperature control can be realized, and the degree of freedom in cooking is further improved.
- the ambient temperature in the heating chamber is reduced to a temperature lower than the temperature of the supplied steam.
- the temperature in the heating chamber can be quickly and accurately lowered to a temperature suitable for cooking the object to be heated.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electric Ovens (AREA)
- Cookers (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05730528A EP1741986A4 (en) | 2004-04-22 | 2005-04-14 | COOKING APPARATUS AND COOKING METHOD |
US10/599,817 US20070221070A1 (en) | 2004-04-22 | 2005-04-14 | Cooker and Cooking Method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004126434A JP4472412B2 (ja) | 2004-04-22 | 2004-04-22 | 加熱調理器 |
JP2004-126434 | 2004-04-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005103569A1 true WO2005103569A1 (ja) | 2005-11-03 |
Family
ID=35197063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/007241 WO2005103569A1 (ja) | 2004-04-22 | 2005-04-14 | 加熱調理器及び加熱調理方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070221070A1 (ja) |
EP (1) | EP1741986A4 (ja) |
JP (1) | JP4472412B2 (ja) |
CN (1) | CN1942711A (ja) |
WO (1) | WO2005103569A1 (ja) |
Cited By (1)
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EP1975515A1 (en) * | 2006-01-17 | 2008-10-01 | Matsushita Electric Industrial Co., Ltd. | High-frequency heating device |
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EP1975515A4 (en) * | 2006-01-17 | 2011-03-23 | Panasonic Corp | HIGH FREQUENCY HEATING DEVICE |
Also Published As
Publication number | Publication date |
---|---|
EP1741986A1 (en) | 2007-01-10 |
JP4472412B2 (ja) | 2010-06-02 |
JP2005308312A (ja) | 2005-11-04 |
CN1942711A (zh) | 2007-04-04 |
US20070221070A1 (en) | 2007-09-27 |
EP1741986A4 (en) | 2010-09-08 |
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