JP2012176194A - Rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice cooker configured to restrict the deformation or the like of a shell member of a lid and to further increase the temperature of superheated steam.SOLUTION: The rice cooker includes: a pot housed in a rice cooker body; a lid having a hollow structure and opening/closing a top opening of the pot; a superheated steam generator for producing the superheated steam by heating steam; a steam supply tube for supplying steam to the superheated steam generator; and a superheated steam injection tube for discharging the superheated steam produced in the superheated steam generator into the pot. The superheated steam generator and the steam supply tube, and the superheated steam generator and the superheated steam injection tube are connected through an elastic heat insulating member, respectively, and the superheated steam generator is disposed in an inner space of the lid, and mounted to the shell member of the lid through a fixing member so as not to make direct contact with the shell member of the lid.

Description

  The present invention relates to a rice cooker provided with a superheated steam generator for supplying superheated steam exceeding 100 ° C. into the pot from an opening of the pot.

  Conventionally, various types of rice cookers have been known. For example, Patent Document 1 (see Japanese Patent No. 4203995) discloses a rice cooker in which a heater is attached around a steam pipe (steam path) disposed in an internal space of a lid. According to the rice cooker of patent document 1, the steam which passes the inside of a steam pipe can be heated by heating a steam pipe with a heater, and the superheated steam exceeding 100 degreeC can be produced | generated.

Japanese Patent No. 4203995

  However, in the rice cooker of patent document 1, there exists a subject that the temperature of superheated steam cannot be made high (for example, 130 degreeC or more). That is, in a configuration in which a heater is disposed around the steam pipe and the steam passing through the steam pipe is heated, the steam and the heater are not in direct contact with each other, so the thermal efficiency of transferring the heat of the heater to the steam is low. Moreover, in the said structure, the heat of a heater diffuses to the whole steam pipe. Since the steam pipe has many portions that come into contact with air, the heating efficiency of the steam is deteriorated. For this reason, in order to raise the temperature of superheated steam in the said structure, it is necessary to make the output (work volume) of a heater high.

  However, when the output of the heater is increased, the heater itself becomes high temperature, so that the heat around the heater is transmitted to the outer member of the lid, and the outer member of the lid becomes high temperature. Thus, for example, when the outer member of the lid is made of resin, the outer member of the lid may be deformed or melted. Further, when the outer shell member of the lid is made of metal, the risk of burns increases.

  Accordingly, an object of the present invention is to provide a rice cooker that solves the above-described problems and can further suppress the deformation of the outer member of the lid and further increase the temperature of the superheated steam.

According to the present invention, the pan stored in the rice cooker body,
A hollow lid capable of opening and closing the upper opening of the pan;
A superheated steam generator for heating the steam to generate superheated steam;
A steam supply pipe for supplying the steam to the superheated steam generator;
A superheated steam input pipe for discharging the superheated steam generated by the superheated steam generator into the pan;
With
The superheated steam generator and the steam supply pipe, and the superheated steam generator and the superheated steam input pipe are each connected via a heat insulating member having elasticity,
The superheated steam generator is disposed in the inner space of the lid, and is attached to the outer member of the lid via a fixing member so as not to directly contact the outer member of the lid.
Provide rice cooker.

  According to the rice cooker according to the present invention, the superheated steam generator and the steam supply pipe, and the superheated steam generator and the superheated steam input pipe are connected via the heat insulating member having elasticity. It is possible to suppress the generated heat from diffusing throughout the steam supply pipe and the superheated steam input pipe. In addition, since the superheated steam generator is attached to the outer shell member of the lid via a fixing member so that it does not directly contact the outer shell member of the lid, a part of the heat generated by the superheated steam generator is diffused by the fixing member. Thus, the amount of heat transferred to the outer shell member of the lid can be reduced. Therefore, the deformation of the outer member of the lid can be suppressed and the temperature of the superheated steam can be further increased (for example, 200 ° C. or higher).

It is a schematic cross section of the rice cooker concerning embodiment of this invention. It is a top view which shows typically the state which notched some lids of the rice cooker concerning embodiment of this invention. It is a perspective view showing the state where a steam supply pipe and a superheated steam input pipe were attached to a superheated steam generator with which a rice cooker concerning an embodiment of the present invention is provided. It is a schematic cross section which shows the state by which the steam supply pipe and the superheated steam injection pipe were attached to the superheated steam generator with which the rice cooker concerning embodiment of this invention is provided. It is a perspective view which shows the attachment structure of the superheated steam generator of FIG. It is a schematic cross section which shows the attachment structure of the superheated steam generator of FIG. It is a schematic cross section which shows the state which has arrange | positioned the sheet-like heat insulation member around the superheated steam generator of FIG. 6, and a fixing member. It is a perspective view which shows the modification of a fixing member. It is a schematic cross section which shows the modification of the attachment structure of the superheated steam generator of FIG.

In order to achieve the above object, the present invention is configured as follows.
According to the first aspect of the present invention, the pan stored inside the rice cooker body;
A hollow lid capable of opening and closing the upper opening of the pan;
A superheated steam generator for heating the steam to generate superheated steam;
A steam supply pipe for supplying the steam to the superheated steam generator;
A superheated steam input pipe for discharging the superheated steam generated by the superheated steam generator into the pan;
With
The superheated steam generator and the steam supply pipe, and the superheated steam generator and the superheated steam input pipe are each connected via a heat insulating member having elasticity,
The superheated steam generator is disposed in the inner space of the lid, and is attached to the outer member of the lid via a fixing member so as not to directly contact the outer member of the lid.
Provide rice cooker.

  According to the second aspect of the present invention, the superheated steam generator has an engaging portion, and the engaging member engages with an engaged portion provided in the fixing member, whereby the fixing member The rice cooker as described in a 1st aspect attached to is provided.

  According to the 3rd aspect of this invention, the said superheated steam generator provides the rice cooker as described in a 2nd aspect which is contacting the said fixing member only in the said engaging part.

According to the fourth aspect of the present invention, the fixing member is a plate-like member fixed to a plurality of bosses erected on the outer member of the lid,
The said superheated steam generator provides the rice cooker as described in any one of the 1st-3rd aspect suspended by the said fixing member so that substantially the whole may be covered with the said fixing member in planar view.

  According to the 5th aspect of this invention, the said fixing member provides the rice cooker as described in a 4th aspect which has a substantially cylindrical part which covers the outer peripheral surface of the said superheated steam generator.

  According to the 6th aspect of this invention, the rice cooking as described in any one of the 1st-5th aspect by which the sheet-like heat insulation member is arrange | positioned between the said overheated steam generator and the outer shell member of the said lid | cover. Provide a bowl.

  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>
The whole structure of the rice cooker concerning embodiment of this invention is demonstrated using FIG. 1 or FIG. FIG. 1 is a schematic cross-sectional view of a rice cooker according to an embodiment of the present invention. Drawing 2 is an upper surface figure showing typically the state where a part of lid of the rice cooker concerning the embodiment of the present invention was notched.

  As shown in FIG. 1, the rice cooker concerning this embodiment is accommodated in the substantially bottomed cylindrical rice cooker main body 1 in which the pot accommodating part 1a was formed, and the pot accommodating part 1a, and rice and water are contained. It has a pan 2 that can be put in. A lid 3 having a hollow structure capable of opening and closing the upper opening of the rice cooker body 1 is attached to the top of the rice cooker body 1. A substantially disc-shaped inner lid (also referred to as a heating plate) 4 capable of sealing the upper opening of the pan 2 is detachably attached to the inside of the lid 3 (the side covering the opening of the pan 2).

  The pot storage part 1a of the rice cooker body 1 is composed of an upper frame 1b and a coil base 1c. The upper frame 1b has a cylindrical portion 1ba that is arranged so that a predetermined gap is provided with respect to the side wall of the stored pan 2, and an upper opening of the rice cooker body 1 that protrudes outward from the upper portion of the cylindrical portion 1ba. And a flange portion 1bb fitted to the inner peripheral portion. The flange portion 1bb is formed with a water tank storage portion 1bc for storing the water tank 5. The water tank 5 is a bottomed cylindrical container that holds water for generating steam. A water tank heating coil 6, which is an example of a water tank heating device for heating (induction heating) the water tank 5, is attached to the outer peripheral surface of the water tank housing 1 bc. Instead of the water tank heating coil 6, the water tank 5 may be heated by a heater. When the water tank heating coil 6 heats the water tank 5, the water in the water tank 5 boils and steam of about 100 ° C. is generated. In addition, an opening is provided in the side portion of the water tank storage portion 1bc. In the opening portion, a water tank temperature sensor 7 for measuring the temperature of the water tank 5 is disposed so as to be able to contact a side portion of the water tank 5 stored in the water tank storage portion 1bc.

  The coil base 1c is formed in a bottomed cylindrical shape corresponding to the shape of the lower portion of the pan 2, and the upper portion is attached to the lower end portion of the cylindrical portion 1ba of the upper frame 1b. A pan bottom heating unit 8 which is an example of a pan heating device for heating (induction heating) the pan 2 is attached to the outer peripheral surface of the coil base 1c. The pan bottom heating unit 8 includes an in-bottom heating coil 8a and an out-bottom heating coil 8b. The in-bottom heating coil 8a is disposed so as to face the periphery of the center of the bottom of the pan 2 via the coil base 1c. The outside bottom heating coil 8 b is disposed so as to face the corner portion of the bottom of the pan 2 through the coil base 1.

  An opening is provided in the central portion of the bottom of the coil base 1c. In the opening portion, a pan temperature sensor 9 which is an example of a pan temperature detecting unit for measuring the temperature of the pan 2 is disposed so as to be able to contact the bottom of the pan 2 stored in the pan storage unit 1a. . Since the temperature of the pan 2 is substantially the same as the temperature of the cooked rice in the pan 2, the pan temperature sensor 9 can detect the temperature of the cooked rice in the pan 2 by detecting the temperature of the pan 2. .

  The lid 3 includes an upper outer member 3 a and a lower outer member 3 b that constitute the outer shell of the lid 3. The lid 3 includes a hinge shaft 3A. The hinge shaft 3A is an opening / closing shaft for the lid 3, and both ends of the hinge shaft 3A are rotatably fixed to the upper frame 1b of the rice cooker body 1. The lid 3 is provided with a through hole 3c so as to penetrate the vicinity of the center portion in the thickness direction of the lid 3, and the steam cylinder 10 is detachably attached to the through hole 3c. Steam escape holes 10a and 10b are provided on the upper and bottom walls of the steam cylinder 10 so that excess steam in the pot 2 can be discharged to the outside of the rice cooker. An annular packing 11 is attached around the through hole 3 c on the inner lid 4 side of the lid 3. The packing 11 is provided so as to be in close contact with the periphery of the steam escape hole 4 a provided in the inner lid 4 when the inner lid 4 is attached to the lid 3.

  In addition, an inner lid temperature sensor 12, which is an example of an inner lid temperature detection unit that detects the temperature of the inner lid 4, is attached to the lid 3. An inner lid heating coil 13, which is an example of an inner lid heating device for inductively heating the inner lid 4, is attached to the inner surface (inner side of the lid) of the lower outer member 3 b serving as the bottom wall of the lid 3.

  The inner lid 4 is made of a magnetic metal such as stainless steel capable of induction heating. An annular packing 14 is attached to the surface of the outer peripheral portion of the inner lid 4 on the pan 2 side. The packing 14 is provided in close contact with the flange portion of the pan 2 when the lid 3 is in the closed state.

  In addition, a superheated steam generator 15 for introducing superheated steam exceeding 100 ° C. into the pot 2 is provided inside the lid 3. The mounting structure of the superheated steam generator 15 will be described in detail later. The superheated steam generator 15 is configured to be able to generate superheated steam by heating steam at about 100 ° C. generated in the water tank 5. A steam supply pipe 16 and a superheated steam input pipe 17 are connected to the superheated steam generator 15. In addition, the superheated steam generator 15 is in contact with a superheated steam temperature sensor 18 that is an example of a superheated steam temperature detection unit that detects the temperature of the superheated steam generated by the superheated steam generator 15.

  The steam supply pipe 16 communicates with the inside of the water tank 5 when the lid 3 is in a closed state, and is provided so as to guide the steam generated in the water tank 5 to the superheated steam generator 15. An annular packing 19 is attached to the end of the steam supply pipe 16 on the water tank 5 side. The packing 19 is provided in close contact with the flange portion of the water tank 5 when the lid 3 is in the closed state.

  The superheated steam input pipe 17 communicates with the inside of the pan 2 through the superheated steam input hole 4b provided in the inner lid 4 when the lid 3 is in the closed state, and the superheated steam generated by the superheated steam generator 15 is stored in the pan 2. It is provided to be put in. An annular packing 20 is attached to the end of the superheated steam input pipe 17 on the pan 2 side. The packing 20 is provided in close contact with the periphery of the superheated steam supply hole 4b of the inner lid 4 when the lid 3 is in the closed state.

  In addition, the lid 3 has a display unit 21 such as a liquid crystal display that displays various information such as a rice cooking course and rice cooking time, and a plurality of rice cooking courses such as a white rice course, a brown rice course, and a white rice (softer) course. The operation part 22 which is an example of the rice cooking course selection part which can select this rice cooking course is provided. The operation unit 22 includes a plurality of buttons such as a rice cooking start button so that instructions for starting, canceling, or making a reservation for cooking can be given in addition to selecting a rice cooking course. The user can select a specific rice cooking course with the operation unit 22 while referring to the display content of the display unit 21 and instruct the start of rice cooking.

  A rice cooker control unit 23 is mounted inside the rice cooker body 1. The rice cooking control unit 23 includes a storage unit that stores a plurality of rice cooking sequences for cooking rice. Here, the “rice cooking sequence” is mainly composed of four steps of preheating, temperature rising, boiling maintenance, and steaming. In performing each step in turn, the energizing time, heating temperature, heating time, heating output, etc. This is a predetermined cooking procedure. Each rice cooking sequence corresponds to one of a plurality of rice cooking courses. The rice cooking control unit 23 controls the driving of each unit and each device based on the rice cooking course selected by the operation unit 22 and the detected temperatures of the temperature sensors 7, 9, and 12, and executes the rice cooking process. In addition, the rice cooking control unit 23 causes the superheated steam generator 15 to generate superheated steam based on the rice cooking course selected by the operation unit 22 and the detected temperature of the superheated steam temperature sensor 18.

  Next, the mounting structure and internal structure of the superheated steam generator 15 will be described in more detail with reference to FIGS. FIG. 3 is a perspective view showing a state where the steam supply pipe 16 and the superheated steam input pipe 17 are attached to the superheated steam generator 15, and FIG. 4 is a schematic cross-sectional view thereof. FIG. 5 is a perspective view showing a mounting structure of the superheated steam generator 15, and FIG. 6 is a schematic cross-sectional view thereof.

  As shown in FIGS. 3 and 4, the superheated steam generator 15 is connected to the steam supply pipe 16 and the superheated steam input pipe 17 via heat insulating members 31 and 32 having elasticity such as rubber. With this configuration, heat generated in the superheated steam generator 15 is not transmitted to the steam supply pipe 16 and the superheated steam input pipe 17.

  The superheated steam generator 15 includes a cylindrical case 41 and a rod-shaped heater 42. The heater 42 is disposed in the case 41 coaxially with the central axis A1 of the case 41. The superheated steam generator 15 heats the steam supplied into the case 41 with the heater 42 to generate superheated steam.

  The heater 42 is provided so as to penetrate the one side wall 41 a of the case 41 so that the heat generating portion 42 B is disposed in the case 41, and the tip end portion 42 A is in contact (fitted) with the other side wall 41 b of the case 41. ing. The case 41 is provided with a steam intake port 41 c that takes in the steam supplied through the steam supply pipe 16 and a superheated steam discharge port 41 d that discharges the superheated steam to the superheated steam input pipe 17. The steam intake port 41 c and the superheated steam discharge port 41 d are disposed in the vicinity of the heat generating portion 42 </ b> B of the heater 42. More specifically, the steam intake port 41 c and the superheated steam discharge port 41 d are disposed so as to face the heat generating portion 42 </ b> B of the heater 42. Further, around the heat generating part 42B of the heater 42, fins 43 made of a metal plate or the like are spirally provided.

  As shown in FIGS. 5 and 6, an engagement claw 44 that is an example of an engagement portion is formed on the outer peripheral surface of the case 41. The engagement claw 44 is engaged with an engagement hole 33 a which is an example of an engaged portion provided in the fixing member 33. The fixing member 33 is a metal (preferably inorganic) plate-like member formed so as to cover substantially the entire case 41 in plan view. The fixing member 33 is fixed to a plurality of bosses 3d erected on the lower outer member 3b of the lid 3 by fastening members 34 such as screws. That is, the superheated steam generator 15 is attached to the lower outer member 3b of the lid 3 via the fixing member 33 so as not to directly contact the upper outer member 3b and the lower outer member 3b. Further, the superheated steam generator 15 is in contact with the fixing member 33 only by the engaging claw 44 and is suspended by the fixing member 33.

  According to the present embodiment, the superheated steam generator 15 and the steam supply pipe 16 and the superheated steam generator 15 and the superheated steam input pipe 17 are connected via the heat insulating members 31 and 32 having elasticity. It is possible to suppress the heat generated by the steam generator 15 from diffusing throughout the steam supply pipe 16 and the superheated steam input pipe 17. Further, since the superheated steam generator 15 is attached to the lower outer member 3b via the fixing member 33 so as not to directly contact the upper outer member 3b and the lower outer member 3b, the heat generated in the superheated steam generator 15 Can be diffused by the fixing member 33 to reduce the amount of heat transferred to the lower outer member 3b. Accordingly, the deformation of the outer member of the lid 3 can be suppressed, and the temperature of the superheated steam can be further increased (for example, 200 ° C. or higher).

  Moreover, according to this embodiment, since the superheated steam generator 15 contacts with the fixing member 33 only by the engaging claw 44, the contact area between the fixing member 33 and the superheated steam generator 15 can be reduced. it can. Further, since the superheated steam generator 15 is suspended by the fixing member 33, heat can be diffused also from the outer peripheral surface of the case 41. Thereby, it is possible to suppress the temperature of the fixing member 33 from rising excessively, and to further suppress deformation of the outer member of the lid 3.

  Further, according to the present embodiment, since the fixing member 33 is formed so as to cover substantially the entire case 41 in plan view, the heat generated by the superheated steam generator 15 is transmitted to the upper outer member 3a. The fixing member 33 can function as a shielding plate that suppresses the above. Thereby, even if it is during rice cooking, it can suppress that the upper outer member 3a which a user can touch becomes high temperature. Therefore, the risk of burns can be further suppressed.

  In addition, according to the present embodiment, since the steam at 100 ° C. is generated by a device different from the superheated steam generator 15, the output of the heater 42 can be lowered, and the superheated steam generator 15 Downsizing can be realized. Moreover, since it is not necessary to supply water in the case 41 of the superheated steam generator 15, it is possible to suppress the adhesion of scale in the case 41 and the decrease in thermal efficiency.

  Further, according to the present embodiment, since the tip end portion 42A of the heater 42 is provided so as to contact the side wall 41b of the case 41, the heat of the heater 42 is directly transmitted to the case 41, and the steam in the case 41 is Heating can be efficiently performed from both the heater 42 and the inner surface of the case 41. Thereby, it is possible to further increase the temperature of the superheated steam and reduce the size of the apparatus. In addition, when the front-end | tip part 42A of the heater 42 and the side wall 41b of the case 41 are contacted, compared with the case where they are not contacted, the temperature of the case 41 can be raised about 70-80 degreeC, for example.

  Since the heater 42 and the case 41 have different shapes from each other, the connection portion between the heater 42 and the case 41 may be broken due to expansion or contraction due to thermal stress when the heat is cooled. For this reason, it is preferable that the front end portion 42 </ b> A of the heater 42 is fitted or brought into contact with the side wall 41 b of the case 41 instead of being integrally fixed. Thereby, it can suppress that the connection part of the heater 42 and the case 41 breaks.

  Further, according to the present embodiment, the steam intake port 41c and the superheated steam discharge port 41d are arranged in the range of the heat generating part 42B of the heater 42, so that the steam taken in from the steam intake port 41c and the heat generating part Heat exchange is performed efficiently due to the large temperature difference from 42B. Further, the temperature can be efficiently raised by the sensible heat action in the range of the heat generating portion 42B until the superheated steam is discharged from the superheated steam discharge port 41d. On the other hand, when the steam intake port 41c and the superheated steam discharge port 41d are provided in places other than the heat generating portion 42B, the temperature of the steam is lowered, and the heating efficiency is lowered. In the present embodiment, a configuration with good heating efficiency is taken in consideration of downsizing the heater 42.

  Further, according to the present embodiment, since the fins 43 are spirally provided around the heater 42, the steam can be spirally moved along the fins 43, and the steam movement path can be lengthened. it can. Further, since the steam is also heated from the fins 43 to which the heat of the heater 42 is transmitted, the contact area between the steam and the heat source (the heaters 42 and the fins 43) increases. Therefore, the heat of the heater 42 can be efficiently applied to the steam, and the steam heating efficiency can be further improved. In addition, the heater 42 can be downsized.

  When the case 41 and the fins 43 are configured to come into contact with each other, dimensional variation is likely to occur particularly in the contact portion between the case 41 and the fins 43 during mass production. In this case, the temperature of the superheated steam discharged from the superheated steam discharge port 41d varies. For this reason, it is preferable that the case 41 and the fin 43 are non-contact. However, if the gap between the case 41 and the fins 43 is increased, the amount of steam that flows through the gaps without flowing along the fins 43 increases, and the steam heating efficiency decreases. For this reason, it is preferable to make the gap between the case 41 and the fin 43 as small as possible (for example, 1.5 mm or less).

  In addition, when the vapor contains components such as calcium chloride and magnesium chloride, if those components adhere to and accumulate on the case 41 and the fins 43, the vapor hardly flows (or does not flow). For this reason, as materials for the fins 43 and the case 41 that are in contact with the steam, it is preferable to select an all-stenitic high corrosion-resistant material so that oxidation, corrosion, stress corrosion cracking, and the like due to steam do not occur.

  Further, when superheated steam is generated in the case 41, the inside of the case 41 becomes a high pressure (about 1.02 atm). For this reason, it is preferable that the member for sealing each connection portion such as the connection portion between the case 41 and the heater 42 is brazed using nickel wax or the like instead of a commonly used rubber member such as silicon or fluorine.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect. For example, in the above description, the steam supplied to the superheated steam generator 15 is generated by heating the water in the water tank 5, but the present invention is not limited to this. For example, steam generated in the pan 2 during rice cooking may be supplied to the superheated steam generator 15.

  In the above description, the air layer is formed between the case 41 and the lower outer member 3b, but the present invention is not limited to this. For example, a sheet-like (preferably inorganic physical) heat insulating member having a lower thermal conductivity than air, such as a silica heat insulating member, may be provided between the case 41 and the lower outer member 3b. Further, as shown in FIG. 7, a sheet-like heat insulating member 35 may be provided so as to cover the entire case 41 and the fixing member 33. In this case, since the heat insulating member 35 is disposed between the case 41 and the upper outer member 3a and between the case 41 and the lower outer member 3b, the deformation of the upper outer member 3a and the lower outer member 3b can be further suppressed. Therefore, the temperature of the superheated steam can be further increased. Moreover, since the superheated steam generator 15 is suspended by the fixing member 33, the heat insulation member 35 is not subjected to its own weight. Therefore, the heat insulating member 35 is not compressed by the dead weight of the superheated steam generator 15 and the heat insulating performance is not deteriorated.

  In the above description, the fixing member 33 is disposed only between the upper outer member 3a and the lower outer member 3b. However, the present invention is not limited to this. For example, as shown in FIG. 8, the fixing member 33 may be configured to have a substantially cylindrical portion 33 </ b> A that covers the outer peripheral surface of the superheated steam generator 15. In this case, since a part of the heat transmitted from the superheated steam generator 15 to the upper outer member 3a and the lower outer member 3b can be shielded by the substantially cylindrical portion 33A, the upper outer member 3a and the lower outer member 3b. Can be further suppressed.

  In the above description, the superheated steam generator 15 is suspended by the fixing member 33, but the present invention is not limited to this. For example, as shown in FIG. 9, the superheated steam generator 15 may be attached to a boss 33 </ b> Aa that is erected on the bottom of the substantially cylindrical portion 33 </ b> A of the fixing member 33.

  In the above description, the fixing member 33 is formed so as to follow the shape of the case 41 for miniaturization. However, the present invention is not limited to this. For example, the fixing member 33 may be flat.

  Since the rice cooker concerning this invention can suppress the deformation | transformation of the outer member of a lid | cover, etc., and can make the temperature of superheated steam still higher, it is useful as a household rice cooker for business use, etc.

DESCRIPTION OF SYMBOLS 1 Rice cooker body 1a Pan storage part 2 Pan 3 Lid 3A Hinge shaft 4 Inner lid 5 Water tank 6 Water tank heating coil (water tank heating device)
7 Water tank temperature sensor 8 Pan bottom heating unit (pan heating device)
9 Pan temperature sensor (pan temperature detector)
10 Steam cylinder 11, 14, 19, 20 Packing 12 Inner lid temperature sensor (inner lid temperature detector)
13 Inner lid heating coil (Inner lid heating device)
DESCRIPTION OF SYMBOLS 15 Superheated steam generator 16 Steam supply pipe 17 Superheated steam injection pipe 18 Superheated steam temperature sensor (superheated steam temperature detection part)
21 display part 22 operation part 23 rice cooking control part 31, 32 heat insulation member 33 fixing member 33a engagement hole (engaged part)
34 fastening member 35 heat insulating member 41 case 41a, 42b side wall 41c steam intake port 41d superheated steam discharge port 42 heater 42A tip portion 42B heat generating portion 43 fin 44 engaging claw (engaging portion)

Claims (6)

A pot stored inside the rice cooker body,
A hollow lid capable of opening and closing the upper opening of the pan;
A superheated steam generator for heating the steam to generate superheated steam;
A steam supply pipe for supplying the steam to the superheated steam generator;
A superheated steam input pipe for discharging the superheated steam generated by the superheated steam generator into the pan;
With
The superheated steam generator and the steam supply pipe, and the superheated steam generator and the superheated steam input pipe are each connected via a heat insulating member having elasticity,
The superheated steam generator is disposed in the inner space of the lid, and is attached to the outer member of the lid via a fixing member so as not to directly contact the outer member of the lid.
rice cooker.   The said superheated steam generator has an engaging part, The said engaging part is attached to the said fixing member by engaging with the to-be-engaged part provided in the said fixing member. rice cooker.   The rice cooker according to claim 2, wherein the superheated steam generator is in contact with the fixing member only at the engaging portion. The fixing member is a plate-like member fixed to a plurality of bosses erected on the outer member of the lid,
The rice cooker according to any one of claims 1 to 3, wherein the superheated steam generator is attached to the fixing member so as to be substantially entirely covered with the fixing member in a plan view.   The said fixed member is a rice cooker of Claim 4 which has a substantially cylindrical part which covers the outer peripheral surface of the said superheated steam generator.   The rice cooker as described in any one of Claims 1-5 by which the sheet-like heat insulation member is arrange | positioned between the said overheated steam generator and the outer shell member of the said lid | cover.

Images