JP2012192052A - Electric rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To utilize a ventilation structure for performing direct ventilation to a rice cooking area to perform a more proper assist to an optional process of the whole rice cooking including heat insulation.SOLUTION: This electric rice cooker includes: a rice pot 2; a cooker body 1 storing the rice pot 2, and equipped with a lid 5 having a steam passage 11 discharging steam 3 outward, for performing lidding; a heater 4 heating the rice pot 2 stored in the cooker body 1; an air supply unit 22 heating air 21 and blowing the air 21 into the rice cooking area performed with the rice cooking or the heat insulation through a ventilation part 19 provided in the rice pot 2; and a controller 7 drive-controlling the heater 4 and the air supply unit 22 to perform the rice cooking.

Description

  The present invention relates to an electric rice cooker, and more particularly, to an electric rice cooker capable of cooking rice, including keeping warm, by ventilating a rice cooking area.

  Patent Document 1 below uses the function of blowing air only to the upper part of the gap between the rice cooker and the rice cooker body that houses and covers the rice cooker and cooks the rice, and after cooking, By forcibly cooling and shortening the temperature of the rice to the heat retention temperature range, the oxidation of fatty acids is prevented, and then when the natural temperature is lowered to the predetermined heat retention temperature, the rice is exposed to high temperatures for a long time and deteriorated. Discloses a technique for preventing discoloration.

  Moreover, the following patent document 2 is provided with the 1st ventilation path toward the heat-emitting component from the ventilation fan, and the 2nd ventilation path toward the rice-cooker side, and is a stage at the stage which transfers to a heat retention process from a steaming process. In addition to cooling by blowing air to the rice cooker side through 2 air passages, by closing the first air passage, the static pressure in the second air passage is increased to cool the rice slowly and quickly. Disclosed is a technique for preventing the rice from being deteriorated such as yellowing because it takes too much time to lower the temperature to the heat retention temperature.

  Furthermore, the following patent document 3 has a function of sucking outside air into the lid and blowing it to the upper space in the rice cooker, and blowing the outside air into the upper space of the rice cooker after the completion of cooking, thereby forcibly air-cooling the rice directly. In addition, a technique for preventing deterioration of the taste of rice by lowering the temperature to a predetermined temperature for a short time is disclosed. Patent Document 3 is also based on a technology that detects and cools the blower fan when it reaches a predetermined temperature higher than the optimum temperature to prevent the surface of the rice from being dried by direct forced air cooling. Technology that controls air cooling by the blower fan and prevents forced air cooling beyond the proper humidity, function to circulate the air inside the rice cooker as cooling air in the lid, and circulation air in the circulation path in the lid Each of them discloses a technology that has a function of dissipating heat and prevents the rice from drying without circulating water to the outside during forced air cooling.

  On the other hand, Patent Documents 4 to 6 below mainly describe housings for electronic parts, control boards, etc., such as automotive lamps, automotive electrical parts such as ECU (Electrical Control Unit), OA equipment, home appliances, and medical equipment. Discloses a ventilation structure for mitigating pressure fluctuations in the housing and for ventilation. This ventilation structure has a ventilation path that is fixed to the opening of the casing and communicates with the inside and outside of the casing, and a support body that supports a ventilation membrane, specifically a resin porous membrane, in the ventilation port of the ventilation path; A cover body that has a ventilation gap on the ventilation membrane and is mounted around the ventilation hole of the support body, and has a communication opening between the ventilation gap and the outer circumference at a position biased toward the support side of the ventilation gap. It is configured.

  The ventilation membrane prevents intrusion of foreign matter into the housing while ensuring ventilation, and reduces the pressure fluctuations inside the housing by the ventilation function and prevents intrusion of foreign matter into the housing while allowing ventilation. To do.

Japanese Patent No. 3058148 Japanese Patent No. 3109434 JP 2001-87126 A International Publication No. 2009/122785 JP 2005-349362 A JP 2009-129557 A

  By the way, although the technique disclosed in Patent Documents 1 and 2 is indirect cooling as Patent Document 3 says, the technique described in Patent Document 2 achieves gentle early cooling. Moreover, the technique of patent document 3 is preventing the drying of the surface of the rice by forced cooling, aiming at direct forced cooling of rice.

  However, the technique described in Patent Document 3 is the direct forced cooling, but the whole rice, that is, the heat-retaining area of the rice, from the outside in a limited range of the upper space in the rice cooker. Only it is. In this sense, in the cooling technologies described in Patent Documents 1 to 3, the moisture retention inside the rice is rejected due to the temperature difference between the outside of the heat-reserved region and the outside of the non-cooled region and the inside of the heat-retained region. This may cause stickiness and odor due to dew condensation, and hinder the pursuit of further deliciousness of rice. In particular, there is a problem that the folding fan mechanism cannot be used for proper assist in any process of cooking rice in general.

  In addition, the ventilation technique disclosed in Patent Documents 4 to 6 does not disclose any problems, configurations, and effects for performing appropriate assistance to any process of rice cooking in general. The present applicant can improve rice cooking conditions more actively and effectively, including the heat insulation, by a simple ventilation structure that directly ventilates the rice cooking area where rice cooking and heat insulation are performed from the ventilation part provided in the rice cooker, Patent Documents 1 to The rice cooking technique superior to the technique disclosed in No. 3 has been previously proposed (Japanese Patent Application Nos. 2010-49775 and 2010-49812), but it is still insufficient for proper assistance in any process. .

  In view of such a problem, the present invention provides an electric rice cooker capable of providing more appropriate assistance to any process of general rice cooking including heat insulation by making use of a ventilation structure for direct ventilation to the rice cooking area. With the goal.

  In order to achieve the above object, an electric rice cooker of the present invention includes a rice cooker, a rice cooker that contains the rice cooker, and a steam passage that discharges the steam to the outside. A body equipped with a lid to heat, a heating means for heating the rice cooker housed in the bowl, and an air supply that blows air by blowing air into the rice cooking area where rice cooking and heat insulation are performed through the ventilation part provided in the rice cooker And a control means for performing rice cooking by drivingly controlling the heating means and the air supply means.

  In such a configuration, the energization control by the control means of the heating means automatically performs rice cooking while releasing steam to the outside, and if necessary, keeping the rice after cooking at a predetermined temperature. In the drive control by the control means of the air supply means according to the necessity of heating in each rice cooking process, the heated air is sent from the outside through the ventilation part other than the opening of the rice cooker, and directly into the rice cooking area Necessary for the process such as water absorption process or cooking process by aeration, direct contact and efficient heat exchange or humidity transfer by making more detailed contact with rice grains and rice grains The temperature environment is automatically and auxiliaryly adjusted, and the auxiliary adjustment when the rice cooking area is in a fluid environment such as the initial stage of the water absorption process and the cooking process is particularly accompanied by convection and disturbance due to aeration force. Can be made to work more evenly.

  The electric rice cooker of the present invention also includes a rice cooker, a bowl equipped with a lid for covering the cooked rice cooker, having a steam passage for discharging steam to the outside, A heating means for heating the rice cooker housed in the body, a ventilation portion provided in the rice cooker to ventilate the rice cooking area where rice cooking and heat insulation are performed, an air supply means for blowing air into the rice cooking area through this ventilation section, Steam supply means for blowing steam generated by heating water into the rice cooking area through the vent, and heating means, air supply means, and control means for performing rice cooking by controlling the steam supply means. Is another feature.

  In such a configuration, rice cooking while discharging steam to the outside, and keeping the rice cooked after cooking at a predetermined temperature as needed, are automatically performed. Drive control by the control means sends air and / or steam from the outside to the inside through the ventilation part provided in addition to the opening of the rice cooker, and directly ventilates the rice cooking area to make more detailed contact with rice grains and rice grains The direct, efficient and even heat exchange, humidity transfer, and / or humidification automatically and auxiliaryly adjusts the temperature or humidity environment required for the process, and the cooking area is Auxiliary adjustment when in a fluid environment is accompanied by convection and disturbance caused by aeration force, so that auxiliary adjustment can be applied more evenly.

  The electric rice cooker of the present invention also includes a rice cooker, a bowl equipped with a lid for covering the cooked rice cooker, having a steam passage for discharging steam to the outside, A heating means for heating the rice cooker contained in the bowl, a ventilation part provided in the rice cooker to ventilate the rice cooking area where rice cooking and heat insulation are performed, and air heated or not heated through the ventilation part is blown into the cooking area. An air supply means, a steam supply means for blowing steam generated by heating water into the rice cooking area through the ventilation section, a control means for performing rice cooking by drivingly controlling the heating means, the air supply means, and the steam supply means; The other characteristic is that

  In such a configuration, rice cooking while discharging steam to the outside, and keeping the rice cooked after cooking at a predetermined temperature as needed, are automatically performed. Drive control by the control means, send air and / or steam heated or not heated from the outside through the ventilation part other than the opening part of the rice cooker, and directly ventilate the rice cooking area, with rice grains and rice grains Direct, efficient and even heat exchange, dehumidification, and humidification with contact in detail automatically and substituting the temperature or humidity environment necessary for the process, and cooking, Auxiliary adjustment when the rice cooking area is in a fluid environment is accompanied by convection and disturbance due to aeration force, and the auxiliary adjustment can be applied more evenly.

  The electric rice cooker of the present invention also includes a rice cooker, a bowl equipped with a lid for covering the cooked rice cooker, having a steam passage for discharging steam to the outside, A heating means for heating the rice cooker housed in the bowl, a ventilation part provided in the rice cooker for ventilating the rice cooking area where rice cooking and heat insulation are performed, and a first supply for blowing heated air into the cooking area through this ventilation part Gas supply means, second air supply means for blowing unheated air, steam supply means for blowing steam generated by heating water into the rice cooking area through the vent, heating means, first air supply means, and second supply Another feature is that it includes control means for performing rice cooking by controlling the gas means and the steam supply means according to each process including heat retention of the whole rice cooking according to programs and selections.

  In such a configuration, the first and second air supply means, in addition to automatically performing the rice cooking while releasing steam to the outside, the rice cooked at a predetermined temperature after cooking as needed, In the drive control by the control means according to the initial setting or selection of the steam supply means, heated air, unheated air, steam are appropriately sent from the outside to the inside through the ventilation part other than the opening of the rice cooker, A direct, efficient and even heat exchange, dehumidification, and humidification by directly ventilating the rice cooking area and making more detailed contact with rice grains and rice grains. The auxiliary adjustment when the cooking and cooking area is in a fluid environment is accompanied by convection and disturbance due to aeration force, and the auxiliary adjustment can be applied more evenly.

  According to the electric rice cooker of the present invention, by performing ventilation by blowing heated air, especially in the water absorption process or the initial cooking process where heating is required, with convection due to aeration force, disturbance, water, Electrical heating and adjustment of the temperature environment required for the process by direct, efficient, and even heat exchange through contact with cooking ingredients or rice grains and rice grains in detail It is possible to carry out rice cooking where the rice cooking environment is better prepared and more delicious rice can be obtained than when only heating adjustment is performed alone.

  According to another feature of the electric rice cooker of the present invention, by performing aeration with blowing steam, particularly in a water absorption process or a cooking process that requires heating, convection due to aeration force, disturbance, water, Electrical heating and adjustment of the temperature environment required for the process by direct, efficient, and even heat exchange through contact with cooking ingredients or rice grains and rice grains in detail It is possible to carry out rice cooking where the rice cooking environment is better prepared and more delicious rice can be obtained than when only heating adjustment is performed alone.

  In addition, by performing ventilation by blowing in air that is not heated, especially in heat-retaining processes that do not require heating, direct heat exchange with direct, efficient, and uniform heat exchange with the rice grains is possible. The freshly cooked rice can be quickly cooled down to the prescribed temperature range, exposed to high temperatures for a long time until the temperature is lowered to the prescribed temperature range, and the rice is prevented from degrading and changing in quality, such as yellowing. Can keep warm to quality. In addition, by using the difference in humidity between the blown air and rice to perform the ventilation by blowing steam that is not burnt, such as non-burning rice, in particular, the humidity difference between the rice grains being kept warm in the warming process, Humidity proportional to the aeration time can be evenly moistened based on detailed contact with moisture using the temperature difference, and it is possible to moderately prevent rice thirst and browning during long-term heat retention.

  According to the electric rice cooker of another feature of the present invention, the rice cooker while discharging steam to the outside and the rice cooker after cooking the rice at the predetermined temperature as needed are automatically performed. In the drive control by the control means of the gas means and the steam supply means, air or steam heated or not heated from outside through the ventilation part other than the opening part of the rice cooker, and directly ventilated into the rice cooking area, rice grains Direct, efficient and even heat exchange, dehumidification and / or humidification with more detailed contact with rice grains and automatically assisting in the temperature or humidity environment required for the process In addition, the auxiliary adjustment when the cooking and cooking area is in a fluid environment is accompanied by convection and disturbance due to the aeration force, and the auxiliary adjustment can be applied more evenly.

  According to the electric rice cooker of the present one feature of the present invention, according to the initial setting program and selection, heated air, unheated air, steam, from the outside through a vent provided in addition to the opening of the rice cooker, Necessary for the process by direct, efficient and even heat exchange, dehumidification, and humidification by feeding the rice cake properly, venting directly to the rice cooking area, and making more detailed contact with rice grains and rice grains The temperature and humidity environment is automatically and supplementarily adjusted, and when the cooking and cooking area is in a fluid environment, the supplementary adjustment is accompanied by convection and disturbance due to the aeration force, making the supplemental adjustment more even. To act on.

Sectional drawing which shows one specific example of the electric rice cooker which concerns on embodiment of this invention. Sectional drawing which shows another specific example of the electric rice cooker which concerns on embodiment of this invention. Sectional drawing which changes the direction of the electric rice cooker. Sectional drawing of the principal part which shows the other specific example of the electric rice cooker which concerns on embodiment of this invention. Sectional drawing of the principal part which shows the rice cooker use state without the ventilation part of the electric rice cooker. Sectional drawing of the ventilation | gas_flowing part which shows another example of the electric rice cooker which concerns on embodiment of this invention. Sectional drawing of the ventilation part which shows another specific example of the electric rice cooker which concerns on embodiment of this invention.

  About the electric rice cooker which concerns on embodiment of this invention, it demonstrates, referring FIGS. 1-7, and uses for an understanding of this invention. The following description is a specific example of the present invention and does not limit the matters described in the claims.

  As shown in FIG. 1, the electric rice cooker according to the present embodiment is generated by performing energization control for heating the rice cooker 2 in the covered rice cooker 2 housed in the container 1. The rice is cooked with the release of steam 3 to the outside, and the cooked rice is kept warm if necessary. In the illustrated example, a metal rice cooker 2 is housed in a hollow container 1 so as to be suspended by its flange, and the rice cooker 2 is mounted by electromagnetic induction from a heating coil 4 provided in the hollow part of the container 1. Generate heat and heat for cooking rice. However, heating for cooking rice or keeping warm may be performed by heating a heating element provided on the outer surface of a non-metallic rice cooker 2 such as a clay pot by electromagnetic induction, or by heating the cooker 2 with a heater. it can. Moreover, irrespective of the material of the rice cooker 2, electromagnetic induction heating and heating by a heater can be used in combination.

  The lid of the rice cooker 2 closes the container lid 5 provided so that it can be opened and closed on the container 1 and locks the metal inner lid 6 in the closed state by various known methods. This is done by pressing against the opening 2a of the vessel 2 and keeping it closed. However, it is not limited to this. The energization control of rice cooking and heat retention is performed based on temperature information from the temperature sensor 9 of the rice cooker 2 in a mode initially set by the microcomputer 7 and selected by the operation panel 8, for example.

  The steam 3 generated in the rice cooker 2 during rice cooking is released to the outside through the steam discharge path 11 so that at least no abnormal pressure increase occurs in the rice cooker 2 and its cover area. For this purpose, the steam discharge path 11 needs to penetrate the lid area from the inside of the rice cooker 2 to the outside of the lid area. However, the penetration path can be freely selected. In the illustrated example, the inner lid 6 and the inner lid 6 are closed via the sealing member 14 from the inside of the rice cooker 2 where the inner lid 6 is closed via the sealing material 12, through the vent hole 13 of the inner lid 6. The inside of the vessel lid 5 is connected to a metal reservoir 15 between the inner surface of the vessel lid 5 and the metal heat dissipation plate 15, and the vessel lid 5 passes through the vessel reservoir 16.

  In addition, the part which penetrates the container lid | cover 5 of the vapor | steam discharge path 11 is the pressure regulation part 17 which opens and discharge | releases the vapor | steam 3 when the inside of a cover area becomes more than predetermined pressure with the vapor | steam 3 which generate | occur | produces. Further, a body heater 18 that faces the body portion of the rice cooker 2 in the body portion of the body 1 and is mainly used for heat insulation and is used alone or together with a lid heater or the like on the body lid 5 side (not shown) as necessary. Is provided, and energization is controlled by the microcomputer 7.

  In one specific example of the present embodiment shown in FIG. 1, as described above, the rice cooker 2, the rice cooker 2 is housed, and the housed rice cooker 2 is discharged with steam 3 to the outside. In addition to the vessel 1 equipped with the vessel lid 5 having the path 11 and the lid, the heating coil 4 as an example of a heating means for heating the rice cooker 2 accommodated in the vessel 1, etc. The microcomputer 7 as an example of the control means is provided with an air supply means 22 that blows or ventilates the air 21 with or without heating the air 21 in the rice cooking area where rice cooking or heat insulation is performed through the ventilation portion 19 provided in the heating means. A certain heating coil 4 or the like and the air supply means 22 are driven and controlled to cook rice, and the cooked rice is kept warm if necessary.

  Thereby, by energization control by the microcomputer 7 as a control means of the heating means such as the heating coil 4, the rice cooking while releasing the steam 3 to the outside, and the heat preservation at a predetermined temperature of the cooked rice as needed are automatically performed. To be carried out. In addition to this, in particular, by the drive control by the microcomputer 7 of the air supply means 22 according to the presence or absence of heating in each rice cooking process, the inside is heated from the outside through the ventilation portion 19 provided outside the opening 2a of the rice cooker 2 In direct or efficient heat exchange or humidity transfer by feeding air 21 that has been heated or not heated, venting directly to the rice cooking area, and making contact with rice grains or rice grains in more detail , The temperature or humidity environment required for the process is automatically and auxiliaryly adjusted, and the auxiliary adjustment when the cooking area is in a fluid environment is accompanied by convection and disturbance due to aeration force. Can be made to work more evenly.

  In this way, by carrying out aeration by blowing heated air 21, especially in a water absorption process or a cooking process that requires heating, there are convection and disturbance due to aeration force, and details of water, rice grains, and rice grains In the case of heating adjustment alone, with direct, efficient, and even heat exchange, the temperature environment required for the process is assisted in parallel with electrical heating adjustment. As mentioned above, cooking rice environment can be prepared better and more delicious rice can be obtained.

  In addition, by performing ventilation by blowing in air 21 that is not heated, the direct, efficient, and even, especially in the initial heat-retaining process after cooking rice that does not require heating, in contact with the rice grains in detail. With this heat exchange, the temperature of freshly cooked rice is rapidly lowered to the prescribed temperature range, and the rice is exposed to high temperatures for a long time until it falls to the prescribed temperature range. It can prevent and keep warm with good quality. In this case, due to the difference in humidity between the blown air 21 and the rice, the excess air that may still remain in the steaming process such as non-burning rice is carried over the blown air 21 and taken away. As you can keep warm. You may enable it to adjust the humidity of the blowing air 21 according to the presence or absence of such dehumidification.

  The air supply means 22 should just be able to supply at least the heated air 21. However, in this example, the air pump 24 in the container body 1 sucks the air 21 outside the container body 1, configures the air supply path 26 that is heated by the heating unit 25 and then blown into the ventilation unit 19. And the heating unit 25 are individually driven by a microcomputer 7 as a control means so that the heated air 21 or the unheated air 21 can be appropriately supplied by selecting operation or non-operation of the heating unit 25. The heating unit 25 heats the supplied air 21 by exchanging heat with the heater 25a, but the heating method is not particularly limited.

  The ventilation part 19 means that only ventilation is possible, and prevents water from passing therethrough. For this purpose, as shown in the example shown in FIG. 1, the example shown in FIGS. 2 and 3, a plurality of vent holes 19a drilled by using the metal rice cooker 2 can be formed. If such a vent hole 19a has a hole diameter of 100 μm or less, water cannot pass through due to surface tension. Therefore, the air holes 19a are processed to have a hole diameter of 100 μm. If comprised in this way, the special member, components, and assembly structure will become unnecessary for the ventilation | gas_flowing part 19. FIG. However, it has been suggested that it is preferable to limit the wall thickness to about 10 × 10 in terms of productivity. In the unlikely event that the thickness limit is exceeded, the thickness of the hole processing area can be partially reduced, or only the bottom diameter on the side facing the water can be regulated to a predetermined diameter.

In addition, the ventilation | gas_flowing part 19 can apply the porous film | membrane called a semipermeable membrane (semipermeable membrane). This has, for example, hundreds of millions of fine pores of 0.1 μm to 10 μm per cm ² , and has selective permeability that prevents water flow and allows only ventilation. Such a porous membrane is known to be made of ethylene tetrafluoride, and there is no problem in heat resistance and food hygiene due to its material.

  In this example, the air supply port 26a of the air supply path 26 is connected to the bottom of the interior case 1a of the container body 1 from the inside of the interior case 1a to the outside, that is, through the interior of the container body 1a. The air supply port 26a is formed of a seal member such as silicon rubber, and is elastically fitted to the bottom of the interior case 1a to ensure airtightness with the interior case 1a. Connection is easily realized. Further, the air supply port 26a is hermetically connected to the ventilation portion 19 by a sealing lip directed toward the inside of the vessel body 1 being pressed against the outer periphery of the ventilation portion 19 at the bottom of the rice cooker 2 accommodated in the vessel body 1. Air 21 from the air path 26 is blown into the rice cooker 2, that is, into the rice cooking area through the ventilation part 19 without leakage.

  In another specific example shown in FIG. 2 and FIG. 3, in addition to the ventilation part 19 provided in the rice cooker 2 and ventilating the rice cooking area where rice cooking and heat insulation are performed, the air supply 21 is blown into the cooking area through the ventilation part 19. 1 and a steam supply means 32 for blowing the steam 31a generated by heating the water 31 into the rice cooking area through the ventilation part 19, and by the microcomputer 7 as the control means as shown in FIG. The heating coil 4 as the heating means, the air supply means 122, and the steam supply means 32 are driven and controlled so as to heat the rice after cooking and, if necessary, the cooked rice.

  Thereby, the rice cooking while releasing the steam 31a to the outside, and the heat retention at a predetermined temperature of the cooked rice as needed are automatically performed. At the same time, the air supply means 122 and / or the steam supply means 32 are driven and controlled by the microcomputer 7 so that the air 21 and / or the steam 31a are sent from the outside to the inside through the ventilation part 19 provided in addition to the opening 2a of the rice cooker 2. The temperature required for the process in direct, efficient and even heat exchange, humidity transfer, and / or humidification by directly ventilating the area and making more detailed contact with the rice grains and rice grains Or, the humidity environment is automatically and auxiliaryly adjusted, and the auxiliary adjustment when the cooking area is in a fluid environment is accompanied by convection and disturbance due to aeration force, and the auxiliary adjustment can be applied more evenly. .

  In this way, by carrying out aeration with blowing steam 31a, especially in the initial stage of the water absorption process or the cooking process that requires heating, there are convection and disturbance due to the aeration force, and the details of water, rice grains and rice grains In the case of heating adjustment alone, with direct, efficient, and even heat exchange, the temperature environment required for the process is assisted in parallel with electrical heating adjustment. As mentioned above, cooking rice environment can be prepared better and more delicious rice can be obtained.

  In addition, by performing ventilation by blowing air 21 that is not heated, in particular, in a heat-retaining step that does not require heating, direct heat exchange is achieved with high efficiency and even heat contact with the rice grains in detail. In addition, the temperature of the freshly cooked rice is rapidly lowered to the predetermined temperature range, and the rice is exposed to high temperatures for a long time until the temperature is lowered to the predetermined temperature range, so that the rice is prevented from degrading and changing in quality, such as yellowing. High quality can be kept warm. Furthermore, using the difference in humidity between the blown air 21 and rice, the excess air that may still remain in the steaming process such as non-burning rice is multiplied by the blown air 21 and taken away. You can keep warm as delicious rice. You may enable it to adjust the humidity of the blowing air 21 according to the presence or absence of such dehumidification. For this purpose, the presence / absence of simultaneous blowing of the steam 31a and the adjustment of the simultaneous blowing amount are effective.

  Here, the air supply means 122 supplies air 21 that is not heated, and it is only necessary to provide the air pump 24 in the air supply path 26 in the example shown in FIG. The steam supply means 32 heats the water 31 by the heater 34 in the steam supply passage 33 for supplying the steam 31a to the vent 19 and generates the steam 31a in an instantaneous water heating manner, thereby performing the check and one-way vent. 19 is provided with a steam generating boiler 35 that is ventilated, and a water supply pump 36 that supplies water 31 dropwise to the steam generating boiler 35 is connected to the steam generating boiler 35. The water 31 supplied to the steam generating boiler 35 is instantly vaporized. It can be sent out. As a result, the steam generating boiler 35 rises at the same time as driving by the microcomputer 7, and the start timing and end timing of the steam 31 a, and the blowing time can be accurately controlled by the driving timing of the microcomputer 7 of the water supply pump 36. it can.

  Further, the ventilation portion 19 has a supply air introduction path 37 that is shared with the air 21 and the steam 31a, and an air supply path 26 and a steam supply path 33 are connected to the supply air introduction path 37. 31 a is blown into the ventilation portion 19 through the air supply introduction path 37 so as to be ventilated. Further, it is conceivable that the air 21 and the steam 31a that use the air supply introduction path 37 and the like are used for the structure, and the air 21 and the steam 31a enter the other passage, and the steam 31a is supplied to the air pump 24. The intrusion of the air affects the durability and life of the air pump 24 and becomes a problem.

  Therefore, in this example, an electromagnetic valve 38 is provided between the air supply path 37 of the air supply path 26 and the air pump 24, and after the driving of the air pump 24 by the microcomputer 7 is started, the electromagnetic valve 38 is opened and closed. Then, the start, stop, and supply time of the air 21 can be accurately controlled, and the steam 31a enters the supply path 26 when the steam 31a is supplied by closing the solenoid valve 38 when the supply of the air 21 is stopped. Thus, it is possible to avoid such a situation that it reaches the air pump 24.

  The water supply pump 36 is connected to a water receiving port 36a to which a water supply tank 39 is attached and detached, receives water 31 supplied from the water supply tank 39 attached to the water receiving port 36a, and supplies water to the steam generating boiler 35 to generate steam 31a. The air can be supplied to the ventilation portion 19. The water receiving port 36 a allows the water supply tank 39 to be attached and detached from the outside of the container body 1. For this purpose, the water receiving port 36a is provided facing the outside such as the side of the vessel body 1 or the water supply tank 39 is taken in and out from the outside of the vessel body 1 and a tank housing recess 41 that can be attached to and detached from the water receiving port 36a is provided. Good. If the tank housing recess 41 is provided with a lid 42 that can be opened and closed or detached, the appearance of the container 1 can be adjusted, and the water tank 39 can be prevented from being unintentionally detached.

  The water supply tank 39 only needs to have a capacity commensurate with the air supply amount of the steam 31a necessary for one rice cooking, and can be made very small, for example, one tenth or less of the capacity of the rice cooker 2. . However, if the water supply tank 39 and the housing structure thereof adapted to the dead space in the container body 1 are adopted, the water tank 39 having a relatively large capacity with the normal size and form of the container body 1 is provided. Can do.

  A check valve 44 is provided on the screw cap 43 that closes the mouth of the water supply tank 39 so that the water supply tank 39 can be easily handled and detached and there is no fear of water leakage. Thus, when the cap 43 is closed, the check valve 44 remains closed and water leakage is prevented even when the water supply tank 39 is turned upside down.

  When the water supply tank 39 finishes screwing and attaching the cap 43 to the water receiving port 36a, the check valve 44 is pushed open by the projection 36b on the water receiving port 36a, and the water 31 in the water supply tank 39 passes through the water receiving port 36a. Water is supplied to the water supply pump 36 side. On the contrary, when the water supply tank 39 is removed from the water receiving port 36a, the check valve 44 is released from the pushing action by the protrusion 36b at the initial stage of the removal, and closes the mouth of the water supply tank 39. It is prevented that the residual water in the water supply tank 39 flows out to be removed from the water receiving port 36a.

  When the water 31 supplied from the water supply tank 39 reaches a predetermined water level or higher, the water receiving port 36a closes the downwardly-facing opening of the water supply tank 39 with the water surface of the water 31, so that the water 31 in the water supply tank 39 This prevents natural outflow toward the water receiving port 36a. Accordingly, the water 31 in the water supply tank 39 is automatically supplied by the amount that the surface of the water 31 supplied to the water receiving port 36a falls below the mouth of the water supply tank 39, so there is no problem of excessive water supply.

  The other configurations are not particularly different from the case shown in FIG. 1, and common members are denoted by the same reference numerals, and redundant descriptions are omitted.

  By the way, under the control of the microcomputer 7, it is possible to carry out ventilation by blowing the steam 31 a alone or together with the air 21. Humidity proportional to the aeration time can be evenly distributed based on detailed contact with humidification using the difference, and it is possible to moderately prevent rice thirst and browning during long-term heat retention.

  Moreover, as an electric rice cooker of this Embodiment, the rice cooker which equips the rice cooker 2 provided with the ventilation part 19 as shown in FIG. 4, and the rice cooker which does not have the ventilation part 19 as shown in FIG. Both rice cooking with 102 can be selectively performed by changing or switching the control program for rice cooking and heat retention in a common electric rice cooker. Such selection is usually provided as an electric rice cooker equipped with a combination of the rice cooker 2 and the rice cooker 102, and is a selection item when using the electric rice cooker on the user side. However, the present invention is not limited to this, and the electric rice cooker equipped with the rice cooker 2 and the electric rice cooker equipped with the rice cooker 102 are separately provided, and the electric rice cooker purchased on the user side is purchased. It can also be a matter of time.

  In the electric rice cooker, when the rice cooker 2 is used and when the rice cooker 102 is used, if the control program related to the use or selection of the ventilation portion 19 in the rice cooking or heat insulation process depends on the selection at the time of use on the user side In particular, there is a problem that rice cooking and heat insulation are executed in a mode that does not match.

  Therefore, in the example of the electric rice cooker shown in FIGS. 4 and 5, the magnet 61 is attached to a part of the rice cooker 2 shown in FIG. 4 having the ventilation part 19, but the ventilation part 19 is not provided. Such a magnet is not provided in the rice cooker 102 shown in FIG. In addition to this, a reed switch 62 corresponding to the magnet 61 attached to the rice cooker 2 is provided on the side of the body 1 so that the reed switch 62 corresponds to the magnet 61 at the start of cooking. Whether the rice cooker 2 or the rice cooker 102 is mounted is determined by the microcomputer 7 for rice cooking control as shown in FIG. 1 depending on whether or not the relationship is detected.

  In accordance with such determination, the microcomputer 7 permits and executes any mode setting or selection using the vent 19 only in the case of the rice cooker 2, and uses the vent 19 in the case of the cooker 102. Do not allow any mode setting or selection to be performed. As a result, when the rice cooker 2 is actually mounted, not only normal cooking without using the vent 19 but also cooking with various modes can be performed properly using the vent 19. . In addition, when the rice cooker 102 is actually mounted, the rice cooking using the ventilation part 19 and the control of the heat retention are not performed unnecessarily, thereby causing no problem. In addition, at this time, if the attached rice cooker is set and displayed with characters or voices that do not match the selected rice cooking mode, the user is prompted to change the rice cooker or rice cooking mode, Proper use can be achieved without causing confusion to the user.

  In addition to prompting the user to change the setting of the rice cooker and rice cooking mode, such proper use can also be handled by automatic switching to the rice cooking mode that does not use the ventilation unit 19 and is suitable for the attached rice cooker 102. it can.

  Both the example shown in FIG. 6 and the example shown in FIG. 7 employ a porous membrane 51 as a semipermeable membrane as described above that passes only gas without passing water or liquid through the ventilation portion 19. The aeration part 19 faces the rice cooking area where rice cooking and heat insulation are performed in the rice cooker 2 including the examples of FIG. 1, FIG. 2, and FIG. 3, and therefore, is illustrated as an example at least a part below the minimum water level. Provide at the bottom. For this reason, the porous membrane 51 is easily damaged by receiving an external force particularly during cleaning.

  In view of this, the porous film 51 is housed and attached in a protective case 52 in the illustrated example. Specifically, the protective case 52 is formed by forcibly fitting the through-cylinder portion 55b from the inner surface side so that the flange portion 55a is pressure-bonded to the mounting hole 53 of the rice cooker 2 via the seal member 54, and a nut as in the illustrated example. 59 is fixed to the upper end flange surface with the porous membrane 51 attached upward, and the outer periphery of the flange portion 55a of the vent passage base portion 55 or the peripheral wall of the outer periphery The cap 56 is configured so as to be detachable by fitting, such as irregularities, helicoids, screws, and the like, and a cap 56 that covers the sticking area of the porous film 51 from around.

  Thereby, the air 21 and / or the steam 31a blown into the ventilation part 19 are ventilated into the rice cooking area of the rice cooker 2 from the lateral communication holes 56a disposed on the peripheral wall of the cap 56 after passing through the porous film 51. The rice cooker is allowed to pass through the rice cooking area while diffusing due to the collision with water during cooking, the rice grains in the water, and the rice grains during heat insulation. The ventilation part 19 by such a porous membrane 51 and the protective case 52 is applicable not only to the rice cooker 2 made of metal in the illustrated example but also to a non-metal cooker 2 represented by a clay pot.

  Further, the cap 56 makes it difficult for the rice cake 2 and the suspended matter 58 to reach the porous film 51. In particular, the communication hole 56a is open to the side lower than the porous film 51 so as to vent into the rice cooker 2. An air pocket 57 as shown in FIG. Therefore, not only the suspended matter 58 in the rice cooker 2 but also the flowing water and rice balls are difficult to reach by the porous membrane 51, and even if it reaches, it is suppressed to a very small amount. 51 is less likely to be clogged for a longer period of time. Even if the porous membrane 51 is clogged, the cap 56 can be removed and the porous membrane 51 can be replaced.

  In the example shown in FIG. 7, in the steam supply structure in which the steam generating boiler 35 as shown in FIGS. 2 and 3 is connected to the lower end of the through cylinder portion 55 b, the steam generating boiler 35 side of the through cylinder portion 55 b is provided. A slit 55c is formed on the surface. As a result, even if condensed water accumulates from the porous membrane 51 of the through-cylinder portion 55b on the steam generation boiler 35 side, the air is immediately vaporized through the slit 55c through the slit 55c along with the ventilation through the slit 55c and is vaporized. To be ventilated.

  Although not shown, in the electric rice cooker according to the present embodiment, in the basic structure for cooking rice and keeping warm, the ventilation portion provided in the rice cooker and ventilating the rice cooking area where cooking and keeping warm are performed, and this ventilation portion A first air supply means for blowing air heated into the rice cooking area through, a second air supply means for blowing air not heated, a steam supply means for blowing water generated by heating water into the rice cooking area through the vent, The heating means, the first air supply means, the second air supply means, and the steam supply means, provided with a control means for performing rice cooking by driving and controlling the steam supply means according to each process including heat retention of the whole rice cooking according to the program and selection. Can be.

  Thereby, the air heated from the outside to the inside through the ventilation part provided in addition to the opening of the rice cooker by the drive control by the control means according to the initial setting or selection of the first and second air supply means and the steam supply means. Directly and efficiently, uniform heat exchange, dehumidification, and humidification by sending air and steam appropriately without heating, venting directly to the rice cooking area, and making more detailed contact with rice grains and rice grains Then, the temperature or humidity environment necessary for the process is automatically and auxiliaryly adjusted. In addition, auxiliary adjustment when the cooking and cooking area is in a fluid environment involves convection and disturbance due to aeration force. Auxiliary adjustment can be applied more evenly.

DESCRIPTION OF SYMBOLS 1 Body 2 Rice bowl 3 Steam 4 Heating coil 5 Body lid 6 Inner lid 7 Microcomputer 8 Operation panel 9 Temperature sensor 11 Vapor discharge path 13 Vent hole 19 Ventilation part 21 Air 22, 122 Air supply means 24 Air pump 25 Heating Unit 26 Air supply path 31 Water 31a Steam 32 Steam supply means 33 Steam supply path 37 Supply air introduction path 38 Solenoid valve 39 Water supply tank 51 Porous membrane 52 Protective case 61 Magnet 62 Reed switch

Claims (4)

  The rice cooker, the cooker containing the cooker, the cooker equipped with a lid for covering the cooked rice cooker with a steam passage for discharging steam to the outside, and the cooker housed in the cooker are heated. Heating means, air supply means for heating and blowing air to the rice cooking area where rice cooking and heat insulation are performed through the ventilation part provided in the rice cooker, and control for performing rice cooking by drivingly controlling the heating means and the air supply means And an electric rice cooker.   The rice cooker, the cooker containing the cooker, the cooker equipped with a lid for covering the cooked rice cooker with a steam passage for discharging steam to the outside, and the cooker housed in the cooker are heated. The heating means, the ventilation section that is provided in the rice cooker and ventilates the rice cooking area where rice cooking and heat insulation are performed, the air supply means that blows air into the rice cooking area through this ventilation section, and the steam generated by heating water is An electric rice cooker comprising steam supply means for blowing into a rice cooking area through a vent, heating means, air supply means, and control means for performing rice cooking by drivingly controlling the steam supply means.   The rice cooker, the cooker containing the cooker, the cooker equipped with a lid for covering the cooked rice cooker with a steam passage for discharging steam to the outside, and the cooker housed in the cooker are heated. Heating means, a ventilation part that is provided in the rice cooker and ventilates the rice cooking area where rice cooking and heat insulation is performed, an air supply means that blows air that is heated or not heated into the rice cooking area through this ventilation part, and water is heated Electricity characterized by comprising steam supply means for blowing generated steam into the rice cooking area through the ventilation section, heating means, air supply means, and control means for driving and controlling the steam supply means. rice cooker.   The rice cooker, the cooker containing the cooker, the cooker equipped with a lid for covering the cooked rice cooker with a steam passage for discharging steam to the outside, and the cooker housed in the cooker are heated. A heating means, a ventilation part provided in the rice cooker for venting a rice cooking area where rice cooking and heat insulation are performed, a first air supply means for blowing heated air into the rice cooking area through this ventilation part, and a first blowing air for heating. 2 air supply means, steam supply means for blowing steam generated by heating water into the rice cooking area through the vent, heating means, first air supply means, second air supply means, and steam supply means, An electric rice cooker comprising: a control means that performs drive control according to each process including heat retention of the whole rice cooking according to a program and selection.