JP2016027930A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooker that improves condensation efficiency of steam.SOLUTION: A heating cooker comprises a heat storage material that is provided on at least a portion of the periphery of a steam duct part and that absorbs heat from steam passing through the steam duct part, and the heat storage material is provided at least on the upper side of the steam duct part and on the lower side of an operation display part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heating cooker that heats an inner pot containing an object to be heated (rice, water, etc.) and condenses and recovers the generated steam.

  Conventionally, in a cooking device such as a rice cooker, there has been a configuration in which steam is condensed and recovered (see, for example, Patent Document 1). In the rice cooker described in Patent Document 1, the cooling means is brought into close contact with the surface of the steam pipe to cool the steam conducted through the steam pipe. In addition, Patent Document 1 discloses an example in which a steam passage configured in a spiral shape is immersed in a regenerator material, and steam that is conducted through the steam passage is cooled, in a steam passage configured in a meandering manner. Describes an example in which steam is collided with an inner wall to cool the steam conducted through the steam passage.

JP-A-4-117920 (FIGS. 1, 3, and 5)

  However, in the rice cooker described in Patent Document 1, since the capacity of the water receiver is fixed, the steam cannot be recovered when the generated steam is larger than the expected amount. . Moreover, there is a possibility that the water temperature in the water receiver rises higher than the expected temperature. That is, in a rice cooker that condenses and recovers steam, further improvement in the efficiency of condensing and recovering steam is desired.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a heating cooker designed to improve steam condensation efficiency.

  A heating cooker according to the present invention covers an inner pan in which an object to be heated is put, a container cover for storing the inner pan and a heating device for heating the inner pan, and the inner pan so as to be freely opened and closed. An inner lid, an outer lid that covers the main body so as to be freely opened and closed, and an inner lid that is detachably mounted, and is provided on the inner pan side of the outer lid or the inner lid, during a heating operation by the heating device Stores the tobacco component generated from the object to be heated and returns it to the inner pot, and the outer part so as to communicate with the tobacco return part on the opposite side of the inner pot from the inner pot. A steam conduit portion provided on the lid for guiding the steam generated from the object to be heated during the heating operation by the heating device to a water tank stored outside or in the main body; and provided on an outer peripheral portion of the steam conduit portion. A heat storage agent that absorbs heat from the steam conducted through the steam conduit portion; An operation display unit that is provided above the steam conduit unit and displays various information, and the heat storage agent is provided at least above the steam conduit unit and below the operation display unit. is there.

  According to the cooking device of the present invention, by installing the heat storage agent, it is possible to absorb heat from the steam that is conducted through the steam conduit portion, and it is possible to improve the steam condensation efficiency.

It is a side cross-sectional schematic diagram which shows schematically the structure of the heating cooker which concerns on Embodiment 1 of this invention. It is a drive circuit figure which shows schematically the electric structure of the heating cooker which concerns on Embodiment 1 of this invention. It is a graph which shows the temperature change curve of each position at the time of melting a thermal storage agent in contact with a heat source. It is a side surface cross-section schematic diagram which shows schematically the structure of the heating cooker which concerns on Embodiment 2 of this invention. It is a side cross-sectional schematic diagram which shows schematically the structure of the heating cooker which concerns on Embodiment 3 of this invention. It is a side cross-sectional schematic diagram which shows schematically the structure of the heating cooker which concerns on Embodiment 4 of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a schematic side cross-sectional view schematically showing a configuration of a heating cooker 100 according to Embodiment 1 of the present invention. FIG. 2 is a drive circuit diagram schematically showing an electrical configuration of the cooking device 100 according to the first embodiment. Based on FIG.1 and FIG.2, the structure of the heating cooker 100 is demonstrated. The heating cooker 100 cooks an object to be heated by heating the inner pot 5 containing the object to be heated (rice, water, etc.) with the heating device 3. The present invention is not limited to the embodiments described below. Moreover, in the following drawings including FIG. 1, the relationship of the size of each component may be different from the actual one.

  The cooking device 100 is provided on the main body 1 having an open top and the container cover 2 fixed inside, the container cover 2 in which the inner pot 5 is detachably accommodated, and the outer wall portion of the container cover 2. A heating device 3 composed of a heating coil or the like for electromagnetic induction heating 5 from the outer surface, and a magnetic metal that has an opening on the upper surface and is housed in the container cover 2 and generates heat by an induction current from the heating device 3. A bottomed cylindrical inner pot 5 including an outer lid 9 that covers the upper opening of the main body 1 so as to be openable and closable, and is connected to the inner lid 7 by a locking member 11; And a substantially disk-shaped inner lid 7 that is detachably attached to the side covering the inner pan 5 and can seal the opening of the inner pot 5.

  The heating cooker 100 includes a temperature sensor 4 provided so as to penetrate through a hole formed in the bottom center portion of the container cover 2, a compression spring 4 a that supports the temperature sensor 4 from below, and a container cover 2. Provided on the upper flange portion, provided on the support member 6 for supporting the inner pot 5 accommodated in the container cover 2 and the peripheral portion of the inner lid 7 (the surface on the inner pan 5 side of the outer peripheral portion of the inner lid 7), A lid packing 8 which is a sealing material that seals between the inner lid 7 and the flange portion of the inner pot 5 to obtain adhesion, and a hinge 10 that is provided on the main body 1 and to which the outer lid 9 is attached in an openable and closable manner. Have. The support member 6 may be formed as a convex portion that is convex upward, for example. And this support member is good to provide in three places of the upper flange part of container cover 2, for example, and to support inner pot 5.

  Furthermore, the heating cooker 100 has a return part 12 a and a steam conduit part 12 b, a cartridge 12 that is in communication with the inner pot 5 and is detachably provided on the outer lid 9, and a steam conduit part 12 b of the cartridge 12. A steam discharge path 14 that leads the steam that has been conducted through the steam conduit portion 12b to the water tank 13, and a water tank 13 that houses the steam discharge path 14 and condenses and recovers the steam guided through the steam discharge path 14; In addition to providing buttons for starting, canceling, or making reservations for cooking rice, at least one of the operation / display unit 15 for displaying various information such as the menu and time of cooking, and the outer periphery of the steam conduit 12b And a control unit 30 (see FIG. 2) that performs a rice cooking operation by drivingly controlling each unit and each device. In FIG. 1, the control unit 30 is not illustrated.

  The steam discharge passage 14 extends radially outward from a steam discharge pipe portion 14a accommodated in the water tank 13 and one end side (end portion side opposite to the tip side) of the steam discharge pipe portion 14a. And a water tank lid portion 14b. That is, in a state where the steam discharge path 14 is mounted, the water tank lid portion 14 b covers the upper end portion of the water tank 13, and the steam discharge pipe portion 14 a is accommodated in the water tank 13. Here, an example in which the steam discharge pipe portion 14a and the water tank lid portion 14b are integrally configured is shown, but the steam discharge pipe portion 14a and the water tank lid portion 14b may be configured separately. .

  The cartridge 12 separates the steam containing the tortoise component that has flowed into the towel return portion 12a attached to the hole (steam port 7a) formed in the inner lid 7 into the tough ingredient and the steam, and separates them. The rice balls are returned to the inner pot 5 and the separated steam is guided to the water tank 13.

  A part of the return portion 12a of the cartridge 12 is attached to a steam port 7a partially penetrating through the inner lid 7, collects a tobacco component generated during rice cooking, and removes this tobacco component from the inner pot 5. It comes to return to. In this onset return part 12a, in order to return the amount of spillage in the inner pot 5, an inclined surface inclined so as to descend toward the inner pot 5 is provided (inclined surface 12f shown in FIG. 1). Further, when the cartridge 12 is mounted on the inner lid 7, the inner lid 7 and the cartridge 12 are hermetically sealed with packing. Note that a steam inlet 12d is formed in the return part 12a, and the steam inlet 12d faces the steam hole 7a formed through the inner lid 7 when the cartridge 12 is attached to the outer lid 9. To do.

  One end of the steam conduit portion 12b of the cartridge 12 communicates with the return portion 12a, and the other end communicates with the steam discharge path 14 via the packing, and guides steam generated during rice cooking into the water tank 13. The steam conduit portion 12b is provided on the downstream side of the generally return portion 12a. The steam conduit portion 12b is partially provided with an inclined surface that is inclined so as to fall in the direction of the water tank 13 in order to collect the dew condensation that has occurred inside the water tank 13 (an inclined surface 12g shown in FIG. 1). In addition, as shown in FIG. 1, it is good to make the shielding board 12c stand up in the connection part of the return part 12a and the vapor | steam conduit | pipe part 12b, and to make the weir of the toy component generated with steam. The steam inlet 12d is provided with an on-off valve 12e. The on-off valve 12 e is a valve for returning to the inner pot 5 the bean components that are moved up and down by the pressure of the steam in the inner pot 5 and accumulated in the return unit 12 a.

  The control unit 30 includes a control circuit 31 including a microcomputer mounted on a control board and an inverter unit 20 controlled by the control circuit 31, and performs drive control of each unit constituting the heating cooker 100. That is, when the operation / display unit 15 is operated, the control unit 30 executes a program built in advance, and operates and stops the heating device 3 in accordance with the progress of the rice cooking program, and performs rice cooking. In addition, the detection information of the temperature sensor 4 is input into the control part 30 according to progress of a rice cooking program. Here, the case where the operation / display unit 15 is integrally configured is shown as an example, but the operation unit and the display unit may be configured separately.

  The temperature sensor 4 is a thermistor, for example, and detects the temperature of the inner pot 5 and outputs it to the control unit 30. The lid packing 8 is made of an elastic body such as a substantially annular rubber that is in close contact with the inner pot 5 when the outer lid 9 is in a closed state. Although not shown, a hook portion that can be engaged with a hook portion (not shown) of the outer lid 9 is provided on the upper portion of the front wall of the main body 1 (upper right side in FIG. 1).

  As described above, the control unit 30 includes the control circuit 31 and the inverter unit 20. In addition, the control circuit 31 contains a program required for cooking rice in advance. The control circuit 31 is connected to the temperature sensor 4 and the operation / display unit 15 so that temperature information from the temperature sensor 4 and input information from the operation / display unit 15 are input. And the control circuit 31 controls the heating apparatus 3 via the inverter part 20 according to the input information from the operation / display part 15 and the program built in beforehand. At this time, temperature information from the temperature sensor 4 is appropriately input to the control unit 30, and the program is advanced based on the temperature information.

  A power source 32 is connected to the inverter unit 20, and the inverter unit 20 supplies a high-frequency current to the heating device 3 under the control of the control circuit 31. That is, the control circuit 31 adjusts the input power to the heating device 3 by controlling the inverter unit 20.

Next, the operation of the heating cooker 100 will be described with reference to FIGS.
First, the user puts a specified amount of water into the water tank 13, attaches a steam discharge passage 14 that also serves as a lid of the water tank 13, and sets the water tank 13 together with the main body 1. Further, the user puts a predetermined amount of rice into the inner pot 5 and then puts water corresponding to the amount of rice into the inner pot 5. Thereafter, the user places the inner pot 5 on the container cover 2 and closes the outer lid 9. If it does so, the lid packing 8 of the inner lid 7 will be press-contacted to the flange part of the inner pot 5, and the inner pot 5 will be sealed hermetically. In this state, the user turns on the rice cooking process switch from the operation / display unit 15 to start the rice cooking process.

  When the rice cooking process starts, the control unit 30 adjusts the high-frequency current supplied to the heating device 3 via the inverter unit 20. When a high frequency current is supplied to the heating device 3, a high frequency magnetic field is generated, the opposing surface of the heating device 3 of the inner pot 5 magnetically coupled to the heating device 3 is excited, and an eddy current is induced on the bottom surface of the inner pot 5. The Joule heat is generated by the resistance of the eddy current and the inner pot 5, and the bottom surface of the inner pot 5 generates heat to be heated. The heating cooker 100 has a cartridge 12 inside the outer lid 9, and has a structure in which the inner pot 5 and the water tank 13 communicate with each other through the cartridge 12.

  When the inner pot 5 is heated and a liquid such as water enclosed in the inner pot 5 boils, steam is generated. This steam flows into the return part 12a of the cartridge 12 in which the steam inlet 12d is formed. The steam that has flowed into the return part 12a conducts through the steam conduit part 12b connected to the return part 12a. The steam conduit portion 12 b communicates with the steam discharge pipe portion 14 a of the steam discharge path 14 attached to the water tank 13. Therefore, the steam conducted through the steam conduit portion 12b is guided to the water sealed in the water tank 13 through the steam discharge pipe portion 14a, and is cooled and condensed by this water. When the steam is cooled, the latent heat of the steam is absorbed by the cooling water, and the temperature of the water in the water tank 13 rises according to the steam condensation amount.

  As described above, the cartridge 12 includes the generally return portion 12a and the steam conduit portion 12b. For example, when the rice and water put into the inner pot 5 are heated and boiled, the starch of the rice must be dissolved in the water, which is likely to spill over. This rice cake becomes a bubble with boiling and rises in the inner pot 5, and when it reaches the inner lid 7, it first flows into the rice cake returning portion 12 a. By providing the shielding plate 12c between the return section 12a and the steam conduit section 12b, it is possible to separate the stomach and the steam. In other words, by providing the shielding plate 12c, it is possible to prevent the twisted component from being blocked by the shielding plate 12c and to guide the twisted component toward the steam conduit portion 12b. And the vapor | steam guide | induced to the vapor | steam conduit | pipe part 12b is guide | induced into the water tank 13 through the steam discharge pipe part 14a.

  As described above, the heat storage agent 16 is disposed on at least a part of the outer peripheral portion of the steam conduit portion 12b. The heat storage agent 16 can absorb heat from part of the heat of the steam. A part of the steam absorbed by the heat storage agent 16 is condensed and condensed. The heat storage agent 16 is disposed at least above the steam conduit portion 12b and below the operation / display portion 15, that is, between the steam conduit portion 12b and the operation / display portion 15. Further, as shown in FIG. 1, the heat storage agent 16 may be disposed on at least a part of the outer peripheral portion of the steam discharge path 14. As the heat storage agent 16, for example, a phase transition heat storage agent composed of an alcohol-based polymer or the like may be applied.

  The heat storage agent 16 may be made of a material having a melting point of not less than room temperature and not more than the surface temperature of the steam conduit portion 12b when steam is generated, in a range of 35 ° C. to 80 ° C. By applying the heat storage agent 16 having such a melting point, it is possible to efficiently absorb heat from a part of the steam by the latent heat when the heat storage agent 16 melts. Moreover, the temperature rise of the part (steam conduit | pipe part 12b) arrange | positioned by arrange | positioning the thermal storage agent 16 can be suppressed. Therefore, even when the steam conduit portion 12b is made of resin, it is possible to avoid the steam conduit portion 12b from being heated to 80 ° C. or more, softened and deformed, and the sealing degree being lowered.

  In order to suppress the risk of burns when the user touches the vicinity of the component to be heated (steam conduit portion 12b), it is desirable to set the melting point of the heat storage agent 16 to 60 ° C. or less. Moreover, the vapor | steam which dew condensation in the vapor | steam conduit | pipe part 12b is guide | induced into the water tank 13 by the provided inclined surface 12g, and will be collect | recovered.

  In addition, when the heat storage agent 16 is arrange | positioned on the outer periphery of the bed return part 12a, not only the bed but also the steam which wants to discharge | emit from the inner pot 5 will be condensed and will return to the inner pot 5, and cooking is completed. May become watery. Therefore, in the heating cooker 100, the heat storage agent 16 is arranged on the outer peripheral portion of the steam conduit portion 12b through which the steam is separated and the steam passes. In this way, not only the taste is improved, but also the steam condensation efficiency is improved. Further, since the steam moves upward, heat is easily transmitted to the upper part in the steam conduit portion 12b. Therefore, the heat storage agent 16 is moved to the upper side of the steam conduit portion 12b in order to efficiently absorb heat. It is effective to arrange.

The cooking device 100 configured as described above has the following effects.
When the heating cooker 100 condenses the same amount of steam as the heating cooker in which the heat storage material is not installed because the heat storage agent 16 is installed, the amount of heat to be absorbed in the water tank 13 is reduced. . Therefore, in the heating cooker 100, the water temperature rise in the water tank 13 can be suppressed. Thereby, when a user throws away the water of the water tank 13, the possibility of the situation where the water tank 13 is hot and cannot be held will also be reduced, and handling will become easy.

  In addition, the heating cooker 100 is set to have a water temperature that does not cause burns even if the water in the water tank 13 is accidentally applied to the hand when the water in the water tank 13 is thrown away after cooking rice by installing the heat storage agent 16. It is possible to reduce the amount of water in the water tank 13 as compared to a heating cooker in which no heat storage material is installed. Therefore, the capacity of the water tank 13 can be reduced, and as a result, the main body 1 can be reduced in size.

  Furthermore, it can be said that the cooking device 100 increases the amount of steam that can be condensed before the water temperature in the water tank 13 reaches a specified temperature by installing the heat storage agent 16. Therefore, when the same amount of water is set in the heating cooker 100 as in the heating cooker in which no heat storage material is installed, the amount of steam that can be condensed increases, so that the heat storage material is not installed. It is possible to mount cooking control with a heating power stronger than a cooker, and to improve the deliciousness of cooked rice.

  The heating cooker 100 is configured such that the cartridge 12 is mounted inside the outer lid 9, and includes an operation / display unit 15 above the cartridge 12. Since the cartridge 12 serves as a steam passage, the wall surface temperature of the cartridge 12 is increased by the steam. Therefore, the temperature of the operation / display unit 15 installed above the cartridge 12 is likely to rise. Since a substrate is incorporated in the operation / display unit 15, a rise in temperature may cause failure of the operation / display unit 15, a shortened life, and a malfunction. Therefore, the heating cooker 100 is provided with the heat storage agent 16 at least between the cartridge 12 and the operation / display unit 15. Therefore, in the cooking device 100, the temperature rise of the operation / display unit 15 can be suppressed by the heat absorption effect as well as the condensation of the steam, and the occurrence of a failure or the like can be reduced.

  The heat storage agent 16 may be installed not only on the steam conduit portion 12 b but also on a part of the outer peripheral portion of the steam discharge path 14 in the water tank 13. In particular, by arranging the heat storage agent 16 in the submerged portion of the water tank 13 of the steam discharge path 14, not only from the wall surface of the steam discharge path 14, but also from the water in the water tank 13 whose water temperature rises in proportion to the amount of steam condensation. In addition to being able to absorb heat, condensation is also an effective measure because it surely enters the water tank 13. That is, it is efficient to install the heat storage agent 16 in contact with the steam conduit portion 12b and absorb heat by heat conduction. However, when the heat storage agent 16 is installed in the steam discharge tube portion 14a, the heat transfer coefficient is higher than that in contact with the steam conduit portion 12b. Since it is high, the endothermic effect can be exhibited even when the heat storage agent 16 is not in contact with the steam conduit portion 12b.

  In order to efficiently absorb heat, it is also effective to dispose the heat storage agent 16 on the water tank 13 where the water temperature is high, for example, on the bottom surface of the water tank 13 facing the tip of the steam discharge path 14. Moreover, since water with a high water temperature collects above the water tank 13, the heat storage agent 16 may be installed near the water surface of the water tank 13.

  Although the heat storage agent 16 absorbs heat efficiently at the time of melting, even if the contact portion with the heat storage agent 16 has a temperature higher than the melting point, a certain melting time is required until the heat is transmitted and the melting is completed. Therefore, it is desirable to install it by molding it as thin as possible. In addition, the amount of water in the water tank 13 is designed so as not to exceed 60 ° C. as a temperature at which the water tank 13 is not burned even if it is accidentally put on the hand when discarded after the completion of rice cooking. Therefore, the thickness of the heat storage agent 16 is designed so that, for example, the time until all of the heat storage agent 16 is melted when boiled at 60 ° C. is shorter than the rice cooking time.

  FIG. 3 is a graph showing a temperature change curve at each position when the heat storage agent is melted in contact with the heat source. Based on FIG. 3, the design of the thickness of the heat storage agent 16 used for the heating cooker 100 will be described. In FIG. 3, the horizontal axis represents the elapsed time required for melting, and the vertical axis represents the temperature of the heat storage agent. Note that the test shown in FIG. 3 was conducted by molding the heat storage agent 16 to a thickness of 10 mm and bringing it into contact with a heat source. FIG. 3 shows the results when the distance from the heat source is 1.00 mm (line 1), 2.20 mm (line 2), 3.50 mm (line 3), and 4.10 mm (line 4).

  It was confirmed that the heat storage agent 16 was completely melted in the time indicated by the broken line in FIG. 3, but it can be seen that a certain time is required until the heat storage agent 16 reaches the melting point until the melting point. Moreover, although it changes with heat conductivity of the thermal storage agent 16, it can be said that temperature is hard to raise and it is hard to melt | dissolve, so that it is thick and it is far from a heat source. Therefore, the heat storage agent 16 is preferably designed to have the above thickness after investigating the melting rate.

  As mentioned above, according to the heating cooker 100, by installing the heat storage agent 16, it is possible to suppress an increase in the water temperature in the water tank 13 without using a complicated configuration or mounting complicated cooking control. Therefore, the capacity of the water tank 13 can be reduced, and a very excellent effect that cooking control with a strong heating power is possible can be achieved.

Embodiment 2. FIG.
FIG. 4 is a side cross-sectional schematic view schematically showing the configuration of the heating cooker 200 according to Embodiment 2 of the present invention. Based on FIG. 4, the structure and operation | movement of the heating cooker 200 are demonstrated. In the second embodiment, the difference from the first embodiment will be mainly described, and the description of the same parts as those in the first embodiment will be omitted.

  The second embodiment is different from the first embodiment in that the return portion 41 is provided on the side facing the inner pot 5 of the inner lid 40, that is, in the upper space of the inner pot 5. Further, unlike the inner lid 7 of the first embodiment, the inner lid 40 of the second embodiment has a double structure. The space formed inside the inner lid 40 functions as a steam passage 40d that allows the return part 41 and the steam conduit part 42 to communicate with each other. The inner lid 40 is provided with a hole (steam hole 40 a) that communicates the inside of the inner lid 40 with the generally returning portion 41, and guides the steam generated in the inner pot 5 into the inner lid 40. ing. Further, a steam port 40 b communicating with the steam conduit portion 42 is provided in a part of the outer lid side wall surface of the inner lid 40 (the outer lid side wall surface on the left side in FIG. 4). The steam port 40 b and the steam conduit portion 42 are hermetically sealed via a packing 45. The steam conduit portion 42 is provided on the downstream side of the generally return portion 41.

  Further, a part of the inner lid 40 located below the steam conduit portion 42 has a recess capable of holding water, and this is called a dew condensation holding portion 43. The heat storage agent 44 is in contact with the upper side of the outer lid side wall surface of the inner lid 40 or is incorporated in the outer lid side wall surface of the inner lid 40. The steam conduit part 42 communicates the steam port 40b and the water tank 13. That is, the steam conduit portion 42 performs the same function as the steam conduit portion 12b described in the first embodiment. As the heat storage agent 44, for example, a phase transition type heat storage agent composed of, for example, an alcohol polymer may be applied as in the case of the heat storage agent 16.

Next, the flow of steam in the heating cooker 200 will be described.
When the rice cooking process starts, the control unit 30 adjusts the high-frequency current supplied to the heating device 3 via the inverter unit 20 and heats the bottom surface of the inner pot 5 to heat it. When the inner pot 5 is heated and a liquid such as water enclosed in the inner pot 5 boils, steam is generated. This steam flows into the return part 41. In addition, the return part 41 has an inlet 41a into which steam flows. Further, an opening / closing valve 41e is provided at the inflow port 41a. The on-off valve 41 e is a valve that is moved up and down by the pressure of the steam in the inner pot 5 to return to the inner pot 5 the components of the stick that have accumulated in the stick return portion 41.

  The steam that has flowed into the return part 41 is separated into components and steam in the return part 41. Then, the steam separated by the return part 41 passes through the inside of the inner lid 40 (steam passage 40d) and is discharged to the water tank 13 through the steam conduit 42. As described above, the heat storage agent 44 is disposed so as to be in contact with the upper side of the outer lid side wall surface of the inner lid 40 or to be incorporated in the outer lid side wall surface of the inner lid 40. By the action of the heat storage agent 44, heat can be absorbed from a part of the heat of the steam that is conducted through the inner lid 40. A part of the steam absorbed by the heat storage agent 44 is condensed and held as condensed water in the condensation holding part 43 provided on the inner pan side of the inner lid 40. Thereby, the amount of heat absorbed in the water tank 13 is suppressed, and an increase in water temperature and water level in the water tank 13 can be suppressed.

  In the internal passage of the inner lid 40, an inclined surface that is inclined so as to fall in the direction of the condensation holding portion 43 is provided at the bottom in order to collect the condensation generated inside the condensation holding portion 43 (the inclined surface shown in FIG. 4). 40c). By this inclined surface 40c, the dew condensation generated in the internal passage of the inner lid 40 is reliably guided to the dew condensation holding part 45 and is not returned into the inner pot 5.

  The dew holding part 43 provided in the inner cover 40 communicates with the inner pot 5 so that the water held in the dew holding part 43 does not return to the inner pot 5 when the outer lid 9 is opened after the rice cooking is finished. It is good to prepare in the part closer to the hinge 10 than the return part 41. Moreover, since the thermal storage agent 44 absorbs and retains the heat of steam, it is possible to suppress the temperature of the contents of the inner pot 5 from decreasing after the completion of rice cooking. Therefore, the provision of the heat storage agent 44 is also effective for energy saving. As in the first embodiment, a heat storage agent may be provided in the steam discharge path 14 or the water tank 13.

  As described above, according to the heating cooker 200, by installing the heat storage agent 44, as in the heating cooker 100 according to the first embodiment, complicated cooking control can be performed without a complicated configuration. Without mounting, the water temperature rise in the aquarium 13 can be suppressed, the capacity of the aquarium 13 can be reduced, and the cooking control by strong thermal power is possible. become.

Embodiment 3 FIG.
FIG. 5 is a side cross-sectional schematic view schematically showing the configuration of the cooking device 300 according to Embodiment 3 of the present invention. Based on FIG. 5, the structure and operation | movement of the heating cooker 300 are demonstrated. In the third embodiment, the difference from the first and second embodiments described above will be mainly described, and the description of the same parts as those in the first and second embodiments will be omitted. Shall.

  The heating cooker 300 according to the third embodiment has a return portion 41 on the inner pot 5 side of the inner lid 40 as in the heating cooker 200 according to the second embodiment, and further dew condensation on the inner lid 40. Although the structure provided with the holding | maintenance part 43 is employ | adopted, the vapor | steam conduit | pipe part 51 communicates with external air through the hole (discharge hole 51a) with which the outer cover 9 was equipped, and employ | adopts the structure which discharge | releases vapor | steam outside. Yes. The steam port 40b and the steam conduit portion 51 are hermetically sealed through the packing 45. The steam conduit portion 51 is provided on the downstream side of the generally return portion 41. Note that the steam conduit 51 communicates the steam port 40b and the discharge hole 51a. That is, unlike the first and second embodiments, the steam conduit portion 51 does not lead the steam generated in the inner pot 5 to the water tank but releases it to the outside air. In addition, the vapor | steam conduit | pipe part 51 is equipped with the inclined surface which was made to go down toward the condensation holding | maintenance part 43 in part (inclined surface 51b shown in FIG. 5). Therefore, the steam condensed in the steam conduit part 51 flows and is held on the dew condensation holding part 43 side.

  The heat storage agent 52 is disposed at the same position as the heat storage agent 44 described in the second embodiment, at least a part of the outer peripheral portion of the steam conduit 51, or both. By providing the heat storage agent 52, a part of the steam generated during rice cooking is absorbed by the heat storage agent 52 and condensed, and the condensed water is held in the condensation holding unit 43. Thereby, the vapor | steam amount discharge | released to external air reduces, and it can suppress the raise of the humidity of a room | chamber interior (space where the heating cooker 300 is put). In addition, as the heat storage agent 52, it is good to apply the phase transition type heat storage agent etc. which comprised the alcohol type polymer etc. similarly to the heat storage agent 16, for example.

  As described above, according to the heating cooker 300, by installing the heat storage agent 52, the amount of steam released to the outside air is reduced without using a complicated configuration and without installing complicated cooking control. Therefore, it is possible to provide a very excellent effect that cooking control with strong heating power can be installed.

Embodiment 4 FIG.
FIG. 6 is a side cross-sectional schematic view schematically showing a configuration of a heating cooker 400 according to Embodiment 4 of the present invention. Based on FIG. 6, the structure and operation | movement of the heating cooker 400 are demonstrated. In the fourth embodiment, the differences from the first to third embodiments described above will be mainly described, and the description of the same parts as those in the first to third embodiments will be omitted. Shall.

  The cooking device 400 according to the fourth embodiment employs a configuration in which the inside of the inner pot 5 communicates with the outside air via the cartridge 60. Unlike the cartridge 12 of the heating cooker 100 according to Embodiment 1, the cartridge 60 of the heating cooker 400 is configured to be attachable from the outside of the outer lid 9, and the outer lid 9 remains closed. Detachable. The cartridge 60 is mounted so as to face a hole (steam port 61a) formed in the inner lid 61. The steam port 61 a and the cartridge 60 are hermetically sealed by the packing 62.

  The cartridge 60 includes a generally return portion 60a and a steam conduit portion 60b. In addition, a dew condensation holding part 63 is connected to the end of the steam conduit part 60b opposite to the generally return part 60a side. In the return part 60a, an inlet 65 through which steam flows is formed. The inlet 65 is provided with an opening / closing valve 65a. The on-off valve 65 a is a valve that is moved up and down by the pressure of the steam in the inner pot 5 to return to the inner pot 5 the components of the stick that have accumulated in the stick return portion 60 a.

  The steam conduit portion 60 b communicates the inflow port 65 and the discharge hole 66. That is, the steam conduit portion 60b is configured to release steam generated in the inner pot 5 to the outside air as in the third embodiment. The steam conduit portion 60b is provided on the downstream side of the generally return portion 60a. The discharge hole 66 is formed through a part of the upper wall surface of the steam conduit portion 60b. Note that the steam conduit portion 60b partially includes an inclined surface that is lowered toward the dew condensation holding portion 63 (an inclined surface 67 shown in FIG. 6). Therefore, the steam condensed in the steam conduit portion 60b flows and is held on the dew condensation holding portion 63 side.

  In the heating cooker 400, the heat storage agent 64 is disposed on at least a part of the outer peripheral portion of the steam conduit portion 60b, which is the subsequent stage of the return portion 60a. By providing the heat storage agent 64, a part of the steam generated during rice cooking is absorbed by the heat storage agent 64 and condensed, and the condensed water is held in the condensation holding unit 63. Further, if the heat storage agent 64 is provided on the upper side of the outer peripheral portion of the steam conduit portion 60b, the heat of the steam can be absorbed more efficiently. Thereby, the vapor | steam amount discharge | released to external air reduces, and it can suppress the raise of the humidity of a room | chamber interior (space where the heating cooker 400 is put). In addition, as the heat storage agent 64, it is good to apply the phase transition type heat storage agent etc. which comprised the alcohol type polymer etc. similarly to the heat storage agent 16, for example.

  Further, in the case where the cartridge 60 is mounted from the outside of the outer lid 9 as in the fourth embodiment, the steam path component (specifically, the steam conduit portion 60b) is exposed to the outside, and the steam passes through the temperature. Because it is easy to go up, there is a possibility that the user touches and burns. Therefore, in the heating cooker 400, the heat storage agent 64 is provided in the steam conduit portion 60b to absorb the heat of the steam, so that not only can the steam be condensed and reduced, but also an increase in the component temperature can be suppressed, and burns can be prevented. Generation can be reduced.

  Furthermore, in order to reliably lead the condensed water to the dew condensation holding part 63, the dew condensation holding part 63 is provided at a position lower than the steam conduit part 60b. In addition, when the outer lid 9 is opened and closed with the cartridge 60 mounted, the condensate holding part 63 and the steam conduit part 60b are connected so that the condensed water held in the condensation holding part 63 does not return into the inner pot 5. It is desirable that the position be provided in a portion closer to the hinge 10 where the outer lid 9 rotates than to the approximate return portion 60a of the cartridge 60.

  Although the dew condensation holding part 63 is described as a separate body from the cartridge 60 in the fourth embodiment, it may be integrated. Further, the condensation holding part 63 may be provided in the main body 1 or the outer lid 9.

  As described above, according to the heating cooker 400, by installing the heat storage agent 64, the amount of steam released to the outside air is reduced without using a complicated configuration and without installing complicated cooking control. Therefore, it is possible to provide a very excellent effect that cooking control with strong heating power can be installed.

  In addition, the "welcome return part" demonstrated in Embodiment 1-4 is a part with the function to return the inflowing spill into the inner pot 5, and even if it integrates with a steam conduit part, it is a separate body. It may be. Moreover, although Embodiment 1-4 demonstrated the case where the heating cooker of this invention is a rice cooker, it does not limit a heating cooker to a rice cooker, and a vapor | steam generate | occur | produces in an inner pot. The present invention is also applicable to such an apparatus (for example, a cooker for stew).

  DESCRIPTION OF SYMBOLS 1 Main body, 2 Container cover, 3 Heating device, 4 Temperature sensor, 4a Compression spring, 5 Inner pan, 6 Support member, 7 Inner lid, 7a Steam port, 8 Lid packing, 9 Outer lid, 10 Hinge, 11 Locking material , 12 Cartridge, 12a Stick return part, 12b Steam conduit part, 12c Shield plate, 12d Steam inlet, 12e Open / close valve, 12f Inclined surface, 12g Inclined surface, 13 Water tank, 14 Steam exhaust passage, 14a Steam exhaust pipe part, 14b Water tank lid part, 15 Operation / display part, 16 Thermal storage agent, 20 Inverter part, 30 Control part, 31 Control circuit, 32 Power supply, 40 Inner lid, 40a Steam hole, 40b Steam port, 40c Inclined surface, 40d Steam passage, 41 Stick return part, 41a Inlet, 41e On-off valve, 42 Steam conduit part, 43 Condensation holding part, 44 Thermal storage agent, 45 Packing, 51 Steam guide Pipe part, 51a discharge hole, 51b inclined surface, 52 heat storage agent, 53 condensation holding part, 60 cartridge, 60a screw return part, 60b steam conduit part, 61 inner lid, 61a steam port, 62 packing, 63 condensation holding part, 64 heat storage agent, 65 inlet, 65a on-off valve, 66 discharge hole, 67 inclined surface, 100 heating cooker, 200 heating cooker, 300 heating cooker, 400 heating cooker.

Claims (7)

An inner pot where the object to be heated is placed
A main body comprising a container cover for storing the inner pot and a heating device for heating the inner pot;
An inner lid covering the inner pan so as to be freely opened and closed;
An outer lid that covers the main body so as to be freely opened and closed, and the inner lid is detachably mounted;
The outer lid or the inner lid is provided on the inner pot side, stores the tomb components generated from the heated object during the heating operation by the heating device, and returns to the inner pot.
Provided in the outer lid so as to communicate with the towel return unit on the side opposite to the inner pot of the tongue return unit, and steam generated from the object to be heated during the heating operation by the heating device is externally or A steam conduit that leads to a water tank contained in the body,
A heat storage agent that is provided on the outer periphery of the steam conduit portion and absorbs heat from the steam conducted through the steam conduit portion;
An operation display unit that is provided above the steam conduit unit and displays various types of information;
The heat storage agent is
The cooking device characterized by being provided at least above the steam conduit and below the operation display. The heat storage agent is
It is comprised with the material whose melting | fusing point is in the range of 35 to 80 degreeC. The heating cooker of Claim 1 characterized by the above-mentioned. The heat storage agent is
The cooking device according to claim 1 or 2, wherein the cooking device is provided at least on an upper side of an outer peripheral portion of the steam conduit portion. In what guides the steam generated from the object to be heated during the heating operation by the heating device to the water tank accommodated in the main body,
Provided in the water tank a steam discharge path communicating with the steam conduit portion and discharging steam into the water tank,
The heat storage agent is
It is provided also in at least one part of the outer peripheral part of the said steam exhaust path. The heating cooker as described in any one of Claims 1-3 characterized by the above-mentioned. The heat storage agent is
The cooking device according to claim 4, wherein the cooking device is provided at least in a submerged portion of the periphery of the steam discharge path. In what provides the outer return part on the outer lid,
The heating cooker according to any one of claims 1 to 5, wherein the first return portion and the steam conduit portion are configured as a single cartridge detachably attached to the outer lid. In the one that provides the return portion on the inner pot side of the inner lid,
The heating cooker according to any one of claims 1 to 5, wherein a steam passage that communicates the return portion and the steam conduit is formed inside the inner pot.

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