JP2009153772A - Rice cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the inside of a pot from becoming excessively pressurized. <P>SOLUTION: During operation of a rice cooker, when a steam discharge passage is clogged and the steam can not be discharged, the inside of the pot 2 is prevented from becoming excessively pressurized by discharging steam inside the pot 2 with the use of a seal releasing part (a projection 17) arranged in a pot packing 32 , and also a steam generation amount in the pot is reduced or the generation is stopped by reducing or stopping heating the pot and the discharge of the steam from the seal releasing means is reduced or stopped, thereby safety of the user of the rice cooker is enhanced. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rice cooker having a structure for sealing a lid and a pan.

  The structure of the conventional common rice cooker is shown in FIG. 10 (refer patent document 1). As shown in FIG. 10, the rice cooker main body 101 is formed in a substantially cylindrical shape having an upper surface opened, and a protective frame 103 serving as a pan storage portion is disposed inside the rice cooker main body 101. In the protective frame 103, a pan 102 having a water level line drawn on the inner peripheral surface is detachably disposed. A pan heating means 104 for heating the pan 102 is disposed outside the protective frame 103, and a pan side heating means 105 is disposed outside the side surface of the pan 102.

  A lid 106 is attached to the upper part of the rice cooker body 101 so as to be freely opened and closed. The lid body 106 is rotatably supported via a pin 109 on a hinge part 108 formed integrally with the rear part of the upper frame 107 constituting the upper surface of the rice cooker body 101, and is urged by a hinge spring 110. The other end of the lid 107 is provided with a hook button 111 pivotally supported in front of the upper frame 107 that prevents the lid 107 from being opened, and the hook button 111 is fitted to the lid 106. The lid 106 is held by the hook button 111 without opening and is closed.

  An inner lid 113 having an inner lid steam port 112 for discharging steam generated during rice cooking and heat insulation is provided at the lower portion of the lid body 106, and the inner lid 113 is heated at the upper portion thereof. A cylindrical steam discharge passage 115 communicating with the inner lid heating means 114 and the outside of the product for discharging steam generated during rice cooking and heat retention in the pan 102 is provided. A steam port packing 116 is disposed between the steam discharge passage 115 and the inner lid 113 to prevent steam from flowing into the lid body 106.

In addition, on the outer peripheral portion of the inner lid 113, a pot packing 118, which is an elastic body with a substantially U-shaped cross section that contacts the upper surface of the flange portion 117 of the pot 102, is opened to the inner side of the inner lid support 119. It arrange | positions in the form pinched | interposed between the lid | cover 113, and it prevents that the vapor | steam generate | occur | produced during rice cooking and a heat retention flows out outside from the inner lid | cover vapor | steam port 112 (for example, refer patent document 1).
JP 2005-130992 A

  However, in such a conventional rice cooker, when cooking materials such as cooked rice and cooked rice in the pot 102 block the inner lid steam port 112 and the steam discharge passage 115 for discharging steam during cooking, The steam generated in 102 cannot be discharged, and the inside of the pot 102 is in an excessive pressure state. When the inside of the pan 2 is in an excessive pressure state, a stress is exerted on the lid body 106 to open, and an excessive load that the lid body 106 tries to open on the hook button 111 holding the lid body 106 in a closed state. Join. When the hook button 111 is disengaged from the lid body 106 due to an excessive load, the lid body 106 is opened. At this time, since the inside of the pan 102 is in a heated state, the hot water and the cooking utensils are contained, and the hot water and the cooking utensil in the pan 102 due to the impact of the opening of the lid 106 is the rice cooker. There has been a problem that the body 101 may be scattered around.

  The present invention solves the above-mentioned conventional problem, in a state where the steam in the pan does not discharge from the steam discharge passage during cooking, the lid does not open by preventing the pan from becoming an overpressure state, And it aims at ensuring the safety of the rice cooker user by reducing or stopping the amount of steam generated in the pan by lowering or stopping the heating of the pan.

  In order to solve the above-mentioned conventional problems, the rice cooker of the present invention includes a pot packing formed by an elastic member that seals the pan and the lid on the lower surface of the lid, and a pan and pan when the inside of the pan becomes excessive pressure. A seal releasing part for releasing the seal of the packing and releasing steam, and a body temperature detecting means or a lid temperature detecting means in the vicinity of the seal releasing part of the body, and a detection temperature of the body temperature detecting means or the lid temperature detecting means When the temperature is higher than a predetermined temperature, the rice cooker is configured to perform heating reduction or stop control of the pot heating means by the control unit.

  By this, when the pressure in the pan becomes excessive, the steam in the pan is prevented from being brought into an excessive pressure state by discharging the steam in the pan by the seal release means, and the steam of the main body temperature detecting means or the lid temperature detecting means is prevented. It is possible to reduce the amount of steam to be released and to improve the safety of the rice cooker user by lowering or stopping the heating of the pan by detection.

  The rice cooker of this invention can provide the rice cooker which improved safety.

  The first invention includes a main body, a pan that is detachably housed in the main body, a lid that covers the upper surface opening of the main body so as to be openable and closable, and a pan heating means that heats the pan. And a controller for controlling the pan heating means, a pot packing formed by an elastic member for sealing the pan and the lid on the lower surface of the lid, and the pan when the inside of the pan becomes excessive pressure And a seal releasing part for releasing the seal of the pot packing and releasing steam, and a body temperature detecting means in the vicinity of the seal releasing part of the body, and a detection temperature of the body temperature detecting means is predetermined. If the temperature is higher than the temperature, the control unit performs heating reduction or stop control of the pan heating means, so that the seal release unit changes the sealing state of the pan and pan packing in a state where the steam discharge passage is blocked and steam cannot be discharged. Collapse The inside of the pan is prevented from being over-pressurized by allowing the steam in the pan to be released, and by controlling the heating of the pan or stopping by detecting the steam by the body temperature detecting means. The safety of the rice cooker user can be improved by lowering or stopping the amount of steam generated and reducing or stopping the release of steam from the seal release portion.

  The second invention is a main body, a pan that is detachably housed in the main body, a lid that covers the upper surface opening of the main body so as to be openable and closable, and a pan heating means that heats the pan. And a controller for controlling the pan heating means, a pot packing formed by an elastic member for sealing the pan and the lid on the lower surface of the lid, and the pan when the inside of the pan becomes excessive pressure And a seal releasing part for releasing the seal of the pot packing and releasing steam, and a lid temperature detecting means in the vicinity of the seal releasing part of the main body, the detection temperature of the lid temperature detecting means being predetermined. When the temperature is higher than the predetermined temperature, the controller releases the heat or stops the pan heating means, so that the steam release passage is blocked and the steam cannot be discharged. Broken state The inside of the pan is prevented from being over-pressurized by allowing the steam in the pan to be released, and by controlling the heating of the pan or stopping by detecting the steam by the lid temperature detecting means. The safety of the rice cooker user can be improved by reducing or stopping the amount of steam generated and reducing or stopping the release of steam from the seal release portion.

  In the third invention, in particular, by providing a notification means in the main body of the first and second inventions, the inside of the pan becomes excessive pressure, the sealing state of the pan and pan packing is released, and the steam in the pan is released. This can be notified to the rice cooker user and the safety of the rice cooker user can be further improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
FIGS. 1-6 shows the rice cooker in the 1st Embodiment of this invention.

  In FIG. 1 to FIG. 6, a detachable pan 2 is provided in the main body 1 of the rice cooker. The pan 2 has a heat generating layer 27 on the outer surface, a fluorine coating 42 on the heat conductive layer 30 on the inner surface, the heat generating layer 27 is made of stainless steel, and the heat conductive layer 30 is made of aluminum. The side surface of the pan 2 and the flange portion 11 are connected to each other with a uniform curved surface. The pan 2 is arranged evenly at three locations, and the lower surface of the flange portion 11 is supported by a member 25 that supports the pan protruding from the main body 1. The outer shell of the main body 1 is composed of a body 24 having an intake port 28 and an exhaust port 29 for cooling the internal components of the main body 1. The pan 2 storage part is composed of a protective frame 23 formed of a heat-resistant resin, a pan temperature detecting means 15 having a pressing force in the direction of the pan 2 by a spring for detecting the temperature of the pan 2 at the center of the bottom, and the protective frame 23. The heating coil of the electromagnetic induction heating system which is the pan heating means 33 is provided in the lower surface of this, and the heating coil is comprised by the inner heating coil 13 and the outer heating coil 14 which were divided | segmented and arrange | positioned inside and outside. A plurality of ferrites 34 are provided outside the inner heating coil 13 and the outer heating coil 14 to prevent the magnetic flux from leaking outside the main body 1 and to promote induction heating to the pan 2. By this electromagnetic induction heating method, the heat generating layer 27 constituting the outer surface of the pan 2 generates heat. Here, the inner heating coil 13 and the outer heating coil 14 are arranged separately, but are driven simultaneously to heat the pan 2. An electromagnetic induction side heating means 44 for heating the side of the pan 2 is disposed on the side of the protective frame 23 to heat the side of the pan 2. On the upper surface of the main body 1 facing the lid 3, main body temperature detection means 40 is provided by a thermistor that detects the temperature of the upper surface of the main body 1.

  Above the main body 1, a lid 3 that covers the upper surface of the pan 2 and includes an operation display unit 6 is axially engaged with a hinge portion 7 configured at the rear of the main body 1 so as to be freely opened and closed. The upper surface of the operation display unit 6 of the lid 3 is formed so as to be visible so that the display content can be visually recognized. The operation display unit 6 displays the function and operation state and notifies the buzzer 22 to operate and stop the rice cooker. The starting means 4 comprised by the button to operate is arrange | positioned, and it has the control part 5 which controls rice cooking operation | movement. The lid 3 is provided with lid open / close detection means 18 constituted by a magnet that operates according to the open / closed state of the lid 3 and a reed switch that detects the magnet, and the open / closed state of the lid 3 can be detected. The hinge portion 7 is provided with a hinge spring 20 that urges the lid 3 in the opening direction, and the lid 3 is automatically opened by the hinge spring 20. A hook button 19 having a pressing force by a spring is provided in a direction opposite to the hinge portion 7 of the main body 1, and the lid 3 is held in the closed state by holding the hook 21 on the lid 3 side from above with the hook button 19. . Furthermore, a heating plate 8 that heats the inside of the pot 2 and is detachable from the lid 3 is disposed on the surface of the lid 3 facing the pan 2, and an electromagnetic induction heating type heating plate that heats the heating plate 8 inside the lid 3. A heating plate temperature detecting means 16 having a pressing force to the heating plate 8 by a spring for detecting the temperature of the heating means 26 and the heating plate 8 is provided. The heating plate 8 is provided with a pot packing 32 formed of an elastic member that presses against the flange portion 11 of the pot 2 and seals the pot 2 and the heating plate 8, and a heating plate support 31 that holds the pot packing 32. Here, the pot packing 32 is formed of silicon rubber. The pot packing 32 includes a fixing part 35 that is fixed to the heating plate support 31, an elastic deformation part 36 that is elastically deformed when stress is applied, a seal part 37 that comes into contact with and seals the flange part 11, and the seal part 37 in the pot 2. A distal end portion 38 extending toward the side and a convex portion 17 (seal release portion) having a spherical protrusion shape on the flange portion 11 side of the distal end portion. Here, the shape of the elastically deforming portion 36 is a shape in which the cross-sectional shape is substantially U-shaped and opened to the inside of the pan 2, and the convex portions 17 are arranged at two obliquely rear sides on both sides of the main body 1, avoiding the hinge portion 7 of the main body 1. ing. The heating plate 8 includes a steam hole 9 that communicates the inside of the pan 2 and the lid 3, and the lid 3 includes a steam cylinder 10 that communicates the outside air and the steam hole 9. Further, a side surface of the main body 1 is provided with a handle 12 that is pivotally supported by the main body 1 used when carrying the rice cooker.

  About the rice cooker comprised as mentioned above, the operation | movement and effect | action in rice cooking and heat retention are demonstrated below. Put 2 pots of rice to be cooked and water corresponding to the amount of rice, and set the main body 1 in a predetermined state. When the operation start operation is performed by the activation means 4 provided in the operation display unit 6, the rice cooking process set in the control unit 5 in advance is performed. The rice cooking process is roughly divided into water immersion, cooking, and steaming processes, temperature detection by the pan temperature detection means 15 and the heating plate temperature detection means 16, the internal heating coil 13, the external heating coil 14, and the side surface heating means 44, Rice is cooked in a predetermined rice cooking process by heating the pan 2 and the heating plate 8 with the heating plate heating means 26. In addition, when the rice is kept warm, the temperature of the rice in the pan 2 is maintained within a range from about 75 ° C., which is the temperature at which it is eaten, to about 55 ° C., which is a slightly lower temperature that reduces drying and deterioration of the rice.

  In the heating configuration, the pot 2 is heated, but in the heating by the inner heating coil 13 and the outer heating coil 14, the heating layer 27 facing the inner heating coil 13 and the outer heating coil 14 mainly generates heat in the pot 2. The heat conduction layer 30 having high thermal conductivity on the inner surface transmits heat to the entire pan 2 to heat the heat of the heat generation layer 27 that has generated heat. The side surface heating means 44 also heats the rice by causing the heat generating layer 27 on the side surface portion of the pan 2 to generate heat. Moreover, although it is heating of the heating plate 8, the heating plate 8 is heated by the heating plate heating means 26, and the rice in the pan 2 is heated from above the pan 2.

  The steam generated by cooking the pan 2 is discharged from the pan 2 through the steam hole 9 and the steam cylinder 10 and out of the main body 1. Although it is the shape of the steam hole 9 and the steam cylinder 10, it is better that the opening area is small in order to maintain the temperature in the pan 2 and reduce the water evaporation of the rice during the heat retention. In this embodiment, the steam hole 9 and the steam cylinder The 10 holes on the outer lid 3 side have a shape in which four rectangular holes of 2.5 mm × 15 mm are provided.

  Although it is a seal with the flange part 11 of the pot packing 32, the pot packing 32 is pressed against the flange part 11 from above the pot 2 by closing the lid 3. Since the flange part 11 is a metal member and has rigidity, the pot packing 32 is deformed. Although it is a deformation | transformation of the pot packing 32 at this time, since the fixing | fixed part 35 is being fixed to the heating-plate support 31, it does not deform | transform, and the substantially U-shaped elastic deformation part 36 becomes small in the pan 2 outer side direction, and height becomes small. Deform in the direction. The seal part 37 is pushed upward by the flange part 11, and the tip part 38 is also pushed upward like the seal part 37. At this time, although it is the convex part 17 provided in the front-end | tip part 38 and the front-end | tip part 38, it is set as the shape which does not contact the pan 2 in the state which closed the cover body 2 and the pan packing 32 pressed against the flange part 11. FIG.

  In recent rice cookers, not only cooked white rice, but also cooked rice with ingredients such as meat and vegetables and stewed cooking menus, etc. is there. At this time, in rare cases, the ingredients placed in the pan 2 may adhere to the steam hole 9 and close the steam hole 9, and the steam hole 9 that discharges steam while the pan 2 is heated closes. May be in a high temperature and high pressure state. When the inside of the pan 2 is in an excessive pressure state, stress acts on the lid 3 in the direction of opening the lid 3, and the pan packing 32, which is an elastic member, is further deformed by the pressure. The deformation of the pan packing 32 in the excessive pressure state is that the fixing portion 35 is fixed to the heating plate support 31, but the hinge portion 7 and the hook 21 that hold the lid 3 in the closed state are caused by pressure. The lid 3 is slightly deformed upward, and the fixing portion 35 moves upward. The elastic deformation portion 36 is deformed outward from the pan 2, and the seal portion 37 is moved outward from the flange portion 11 when the elastic deformation portion 36 is deformed outward. The distal end portion 38 rides on the flange portion 11 and presses against the flange portion 11 when the seal portion 37 moves outward of the flange portion 11 and the elastic deformation portion 36 is deformed outward. The tip portion 38 is in pressure contact with the flange portion 11 to form a seal with the flange portion 11, but the portion where the convex portion 17 is arranged as shown in FIG. A gap 39 is generated between the portion 11, the tip portion 38, and the convex portion 17, and the steam in the pot 2 is released from the gap 39, and the pressure in the pot 2 decreases. The steam released from the gap 39 is released from the space between the upper part of the main body 1 and the lid 3 to the outside of the main body 1. At this time, as shown in FIG. 6, the steam released by arranging the convex portion 17 obliquely rearward on both sides of the main body 1 avoiding the hinge portion 7 of the main body 1 is released obliquely rearward on both sides of the main body 1. Therefore, there is no danger of steam hitting the user who is in front of the main body 1 who uses the rice cooker, and is safe.

  In addition, by providing the main body temperature detection means 40 on the upper surface of the main body 1, it is possible to detect the temperature of the steam discharged from the gap 39. When the steam is released by the convex portion 17 (seal release portion), the upper surface of the main body 1 becomes hot due to the steam. For example, when the temperature becomes 80 ° C. (predetermined predetermined temperature) or more, the main body temperature detecting means 40 It can be detected that it has been released, and the controller 5 can reduce or stop the heating of the pot 2, and can reduce or stop the generation of steam in the pot 2. By reducing or stopping the generation of steam in the pan 2, the amount of steam released from the gap 39 can be reduced, and the safety of the rice cooker user can be ensured. Further, if a large amount of steam is continuously released from between the main body 1 and the lid 3 that are not used as a steam discharge passage in normal use, the shape is deformed by the heat of the steam and a gap is generated between the parts. There is a risk that steam may enter the body 3 and reach electronic parts or charged parts, resulting in a dangerous state. However, by reducing or stopping the generation of steam, the steam enters the body 1 and the lid 3. The rice cooker can be prevented and the rice cooker can be kept safe.

  Furthermore, by providing the notification means 41 by the operation display unit 6 and the buzzer 22, it is possible to inform the rice cooker user of the release of the steam from the gap 39 by the display by the operation display unit 6 and the sound by the buzzer 22. By informing the rice cooker user of the release of the steam from the gap 39, it is possible to avoid danger due to the steam and to inform the safety of the rice cooking operation safely.

  As described above, in the present embodiment, when the inside of the pan 2 is in a high temperature and high pressure state due to the steam hole 9 that discharges steam while the pan 2 is heated, The rice cooker user can be made safe by lowering the pressure in the pan 2 by releasing the steam and making the direction of releasing the steam diagonally backward on both sides of the main body 1.

  Furthermore, it has detected that the vapor | steam discharge | released from the clearance gap 39 by providing the main body temperature detection means 40, the heating of the pan 2 is reduced or stopped by the control part 5, and the generation | occurrence | production of the vapor | steam in the pan 2 is reduced or stopped. Thus, the amount of steam released from the gap 39 can be reduced to make the rice cooker user safe.

  Further, in the present embodiment, the means for detecting the release of steam from the gap 39 is the body temperature detection means 40 provided on the upper surface of the body 1, but the means for detecting the release of steam from the gap 39. Is not limited to the upper surface of the main body 1, and the same effect can be obtained in a configuration in which the vapor is detected by the lid body temperature detection means 43 provided on the body 1 side of the lid 3.

  Further, the means for detecting the steam discharged from the gap 39 is the main body temperature detecting means 40 or the lid body temperature detecting means 43, but is limited to the detection of the steam temperature by the main body temperature detecting means 40 or the lid body temperature detecting means 43. Instead, the same effect can be obtained even in a configuration in which the humidity of the steam is detected by means for detecting the humidity and the steam discharged from the gap 39 is detected.

  Moreover, although it was supposed that the heating of the pan 2 was reduced and the amount of steam was reduced by detecting the released steam, the heating of the pan 2 is not limited to the reduction, but the heating of the pan 2 is stopped and the cooking of rice is stopped. Even if the operation is stopped, the same effect can be obtained in avoiding danger.

  Further, although the heating of the pan 2 is reduced, the heating control is not limited to the pan 2, and even if the heating by the heating plate heating means 26 for heating the heating plate 8 is reduced, Since the temperature can be reduced, the generation of steam in the pan 2 can be reduced, whereby the same effect can be obtained.

  Further, the convex portion 17 is provided at the tip portion 38, and when the internal pressure of the pan 2 is increased, the convex portion 17 rides on the flange portion 11 to release the steam, but the seal releasing portion is not limited to the convex portion 17, As shown in FIG. 4, a recess 45 having a semicircular cross section is formed, and the recess 45 is disposed on the flange 11 side of the tip 38, and the tip 38 and the recess 45 are flanged with the lid 3 closed. When the pan 2 is pushed up from the portion 11 and floats without contact, and the internal pressure of the pan 2 becomes an excessive pressure state, the tip portion 38 rides on the flange portion 11 by deformation of the pan packing 32 as shown in FIG. The same effect can be obtained in a configuration in which the seal structure is released by the recess 45 and the steam in the pan 2 is released from the recess 45 to reduce the pressure in the pan 2.

  Moreover, although the alerting | reporting means 41 was made into the display by the operation display part 6, and the alerting | reporting by the buzzer 22, the means to alert | report is not restricted to the operation display part 6 and the buzzer 22. The same or more effects can be obtained if the state or cause is notified.

(Embodiment 2)
FIGS. 7-9 shows the rice cooker in the 2nd Embodiment of this invention.

  7-9, the basic structure of a rice cooker is the same as that of the said Embodiment 1, and the pot packing 46 which is a different location is demonstrated. The pot packing 46 includes a fixing portion 47 that is fixed to the heating plate support 31, a seal portion 49 that comes into contact with and seals the flange portion standing surface 50 positioned below the flange portion 11, an elastically deformable portion 48 that has elasticity, and a seal portion. 49, a tip portion 51 extending downward from the pan 2 and tilting inward to the pan 2 so as not to come into contact with the pan 2, and a convex portion 52 having a spherical protrusion shape on the flange surface 50 side of the tip portion 51 ( The seal release part). Here, the pot packing 46 is formed of silicon rubber, which is an elastic member, and the convex portions 52 are disposed obliquely rearward on both sides of the main body 1 avoiding the hinge portion 7 of the main body 1.

  The pot packing 46 is a seal with the pot 2. By closing the lid 3, the pot packing 46 is pressed against the flange portion 11 from above the pot 2. Since the flange portion 11 is a metal member and has rigidity, the pot packing 46 is deformed. Although it is a deformation | transformation of the pot packing 46 at this time, since the fixing | fixed part 47 is being fixed to the heating plate support 31, it does not deform | transform, and the elastic deformation part 48 deform | transforms into the pot 2 inner side by the flange part 11. FIG. The seal portion 49 forms a seal configuration with the flange portion elevation surface 50. At this time, although it is the front-end | tip part 51 and the convex part 52 provided in the front-end | tip part 51, it is set as the shape which does not contact the pan 2 in the state which closed the cover body 2. FIG.

  In recent rice cookers, not only cooked white rice, but also cooked rice with ingredients such as meat and vegetables and stewed cooking menus, etc. is there. At this time, in rare cases, the ingredients placed in the pan may block the steam hole 9, and the steam hole 9 that discharges steam while the pan 2 is heated closes, so that the inside of the pan 2 is in a high temperature and high pressure state. There was a case. When the inside of the pan 2 is in a high pressure state, stress acts on the lid 3 in the direction of opening the lid 3, and the pan packing 46, which is an elastic member, is further deformed by the pressure. The deformation of the pot packing 46 in the excessive pressure state is that the fixing portion 35 is fixed to the heating plate support 31, but the hinge portion 7 and the hook 21 that hold the lid 3 in the closed state depend on the pressure. The lid 3 is slightly deformed upward, and the fixing portion 47 moves upward. As shown in FIG. 8, the seal portion 49 is dropped from the flange portion elevation surface 50 to the flange portion 11 side by the upward movement of the fixing portion 47 and the deformation of the elastic deformation portion 48 due to the increase in the internal pressure of the pan 2, The sealing structure of the pot 2 and the pot packing 46 is constituted by a flange part elevation 50 and a tip part 51. At this time, by providing the convex portion 52 at the tip portion 51, the seal structure constituted by the flange portion standing surface 50 and the tip portion 51 generates a gap 54 by the convex portion 52, and the convex portion 52 and the flange portion stand up. The steam in the pot 2 is released from the gap 54 formed between the surface 50 and the tip 51, and the pressure in the pot 2 decreases. The steam released from the gap 54 is released from the upper part of the main body 1 and the lid 3 to the outside of the main body 1. At this time, the steam emitted from the convex portion 52 disposed obliquely rearward on both sides of the main body 1 avoiding the hinge portion 7 of the main body 1 is discharged obliquely rearward on both sides of the main body 1, thereby using a rice cooker. The user who is in front of the main body 1 is safe without the danger of being exposed to steam.

  As described above, in the present embodiment, when the inside of the pan 2 is in a high temperature and high pressure state by closing the steam hole 9 that discharges steam while heating the pan 2, The rice cooker user can be made safe by lowering the pressure in the pan 2 by releasing the steam and making the direction of releasing the steam diagonally backward on both sides of the main body 1.

  Moreover, the convex part 52 is provided in the front-end | tip part 38, and when the pan 2 internal pressure rises, the convex part 52 climbs on the flange part standing surface 50, and it was set as the seal release part which discharge | releases steam, However, Seal release means is not restricted to the convex part 52 As shown in FIG. 9, a recess 53 having a semicircular cross-section is formed, and the recess 53 is disposed on the flange surface 50 side of the tip 38 and the tip 3 and the lid 3 are closed. When the concave portion 53 is pushed up from the flange surface 50 and floats without contact, and when the internal pressure of the pan 2 becomes a high pressure state, the tip portion 38 rides on the flange surface 50 due to the deformation of the pan packing 46, At this time, the sealing structure is released by the concave portion 53 and the steam in the pan 2 is released from the concave portion 53, and the same effect can be obtained in the configuration for reducing the pressure in the pan 2.

  As described above, the rice cooker according to the present invention releases steam from the pot packing to reduce the pressure in the pot, and further reduces the heating amount of the pot even when the inside of the pot becomes excessive pressure. Since the amount of rice cooker can be reduced to ensure the safety of the rice cooker user and the rice cooker can be maintained safely, the rice cooker is useful for home and business use.

Sectional drawing of the seal | sticker part of the pot packing in Embodiment 1 of this invention Sectional drawing of the rice cooker in Embodiment 1 of this invention. Sectional drawing of the seal | sticker part of the pot packing in Embodiment 1 of this invention Sectional drawing of the seal | sticker part of the pot packing in Embodiment 1 of this invention Sectional drawing of the seal | sticker part of the pot packing in Embodiment 1 of this invention The figure of the rice cooker in Embodiment 1 of this invention Sectional drawing of the seal part of the pot packing in Embodiment 2 of this invention Sectional drawing of the seal part of the pot packing in Embodiment 2 of this invention Sectional drawing of the seal part of the pot packing in Embodiment 2 of this invention Cross section of conventional rice cooker

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Pan 3 Lid 5 Control means 11 Flange part 17, 52 Convex part (seal release part)
32, 46 Pot packing 35, 47 Fixing part 36, 48 Elastic deformation part 37, 49 Seal part 38, 51 Tip part 40 Body temperature detecting means 41 Notifying means 43 Lid body temperature detecting means 45, 53 Recessed part (seal releasing part)

Claims (3)

A main body, a pan that is detachably housed in the main body, a lid that covers the upper surface opening of the main body so as to be openable and closable, a pan heating means that heats the pan, and a pan heating means A control unit for controlling the pot, a pot packing formed of an elastic member for sealing the pan and the lid on the lower surface of the lid, and a seal between the pan and the pot packing when the inside of the pan becomes excessive pressure When a seal release unit that releases the steam and releases steam, and a body temperature detection unit in the vicinity of the seal release unit of the body, the detection temperature of the body temperature detection unit is higher than a predetermined temperature The rice cooker which performs heating reduction or stop control of the pan heating means by the control unit. A main body, a pan that is detachably housed in the main body, a lid that covers the upper surface opening of the main body so as to be openable and closable, a pan heating means that heats the pan, and a pan heating means A control unit for controlling the pot, a pot packing formed of an elastic member for sealing the pan and the lid on the lower surface of the lid, and a seal between the pan and the pot packing when the inside of the pan becomes excessive pressure A seal release part that releases steam and releases steam, and a lid body temperature detection means in the vicinity of the seal release part of the main body, and the detection temperature of the lid body temperature detection means is higher than a predetermined temperature. In the case, the rice cooker which performs heating reduction or stop control of the pan heating means by the control unit. The rice cooker according to claim 1 or 2, wherein the main body includes a notification unit.

Images