JP2020065679A - Gas rice cooker - Google Patents

Abstract

To provide a gas rice cooker that can minimize the effect of heat when cooking rice, to a resin casing.SOLUTION: A casing of a gas rice cooker is made of resin and includes a lower casing 7 and an upper casing. The lower casing 7 accommodates a burner 10 therein. The upper casing is arranged above the lower casing 7, and accommodates a support cylinder 80 therein. The support cylinder 80 supports an inner pot. At the bottom of the lower casing 7, a ring-shaped plate member 50 and four first fixed cylinder parts 47 are provided upright, independently of the ring-shaped plate member 50. A bottom plate 89 of the support cylinder 80 is fixed to the upper surface of the ring-shaped plate member 50 with screws. The upper casing is fixed to the four first fixed cylinder parts 47 with screws. Accordingly, the upper casing can be arranged around the support cylinder 80 in a state of not contacting the support cylinder 80 heated during rice cooking. Therefore, direct heat transfer from the support cylinder 80 to the upper casing can be prevented. Thereby, it is possible to minimize the influence of heat during rice cooking on the resin casing.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a gas rice cooker.

  A combustion type rice cooker including a casing having a pot attachment portion into which the rice cooker is detachably inserted, and a burner attached to the casing to heat the rice cooker attached to the pot attachment part. Is known (for example, refer to Patent Document 1). The casing is a tubular casing composed of an outer frame and a lower frame, and an inner body that is inserted into the inner side of the outer frame with a space in a state where the upper end portion of the space between the outer frame and the self is closed. Composed of. The casing is generally made of metal due to heat resistance, but there is a need to make at least one of the casings that can be seen by the consumers visible from the viewpoint of weight reduction and flexibility in design. .

JP-A-2000-350657

  In the gas rice cooker, the combustion exhaust gas generated by the burner combustion is passed between the inner pot and the inner cylinder arranged outside the inner pot. Therefore, at the time of cooking rice, the inner case becomes high in temperature due to combustion exhaust, so that it is indispensable to fix the resin case without contacting the inner case. However, it is difficult to resinize the outer frame because the inner body is in a state in which it is in contact with the outer frame and closed at the upper end portion.

  An object of the present invention is to provide a gas rice cooker capable of suppressing the influence of heat during rice cooking on a resin casing to a minimum.

  The gas rice cooker according to claim 1 is formed in a cylindrical shape with a burner and a bottom, the flame mouth of the burner is faced inside an opening provided in the bottom, and an inner pot is supported above the burner. A housing surrounding the inner pot, and a housing for housing the burner and the support inside, and supporting the inner pot into which water and rice are put, on the housing. In a gas rice cooker that closes a lid provided on a body, burns the burner, and passes combustion exhaust gas of the burner to a space between the inner pot and the support body to cook rice, the housing is made of resin. A lower housing that houses the burner inside, and an upper housing that is disposed above the lower housing and housing the support body inside, wherein the lower housing supports the support. The first fixing part to which the bottom of the body is fixed and the first fixing part are provided independently. Is characterized in that the lower end of the upper casing and a second fixing portion fixed.

  It is preferable that at least a part of the inner surface of the upper casing of the gas rice cooker according to claim 2 is provided with a protruding portion that protrudes toward the inside of the upper casing.

  According to the gas rice cooker of claim 1, since the support body and the upper case body are independently fixed to the lower case body, the upper case body is not contacted with the support body heated during rice cooking. It can be arranged around the support. As a result, heat can be prevented from being directly transferred from the support body to the upper housing, so that in a gas rice cooker including a resin housing, the influence of heat during rice cooking can be suppressed to a minimum.

  According to the gas rice cooker of claim 2, even if a shock such as a drop is applied during transportation or a secular change occurs, the contact between the upper housing and the support body is minimized and the upper housing is It is possible to efficiently prevent heat transfer and melting.

It is a perspective view of the gas rice cooker 1. It is a front view of the gas rice cooker 1. It is a right view of the gas rice cooker 1. It is a perspective view of the gas rice cooker 1 in the state which opened the cover body 3. FIG. 3 is a sectional view taken along line I-I of FIG. FIG. 4 is a sectional view taken along line II-II shown in FIG. 3. 4 is an exploded perspective view of the upper housing 8. FIG. FIG. 4 is a cross-sectional view of the upper housing 8 taken along line II-II in FIG. FIG. 7 is an exploded perspective view of a lower housing 7, a ring-shaped plate member 50, an outer heat shield cylinder 60, an inner heat shield cylinder 70, and a support cylinder 80. FIG. 6 is a partially enlarged view of a W1 area shown in FIG. 5. FIG. 7 is a partially enlarged view of a W2 area shown in FIG. 6.

  Embodiments of the present invention will be described below. Unless otherwise specified, the structure and the like of the device described below are not intended to be limited thereto and are merely illustrative examples. The drawings are used for explaining the technical features that can be adopted by the present invention. In the following description, left and right, front and rear, and up and down indicated by arrows in the drawing are used.

  The external structure of the gas rice cooker 1 will be described with reference to FIGS. 1 to 9. As shown in FIGS. 1 to 3, the gas rice cooker 1 includes a housing 2 and a lid 3. The housing 2 is formed in a substantially cylindrical shape with a bottom that opens upward. The housing 2 includes a lower housing 7 and an upper housing 8, both of which are resin molded products.

  The lower housing 7 is formed in a substantially cylindrical shape with a bottom, and an operation panel 175 is provided on the front surface. A burner 10 (see FIG. 5) is housed in a substantially central portion inside the lower housing 7. A through hole 16 is provided on the rear side of the right side surface of the lower housing 7. The gas supply pipe 19 projects rearward from the through hole 16. A gas hose (not shown) is connected to the gas supply pipe 19. A plurality of legs 177 are provided on the bottom of the lower housing 7.

  The upper casing 8 is formed in a substantially cylindrical shape extending in the vertical direction, and is coaxially attached to the upper portion of the lower casing 7. An inner pot 9 (see FIG. 5) is housed inside the upper housing 8 and supported immediately above the burner 10. Rice and water are stored in the inner pot 9. A notch 125 having a rectangular shape in a side view is provided at the upper end of each of the right side portion and the left side portion of the upper housing 8. A part of an outer peripheral surface portion 84 of a collar portion 82 of the support cylinder 80, which will be described later, is arranged inside the cutout portion 125 and is exposed to the outside. A pair of exhaust ports 841 are arranged in the part exposed to the right side, and a pair of exhaust ports 842 (see FIG. 2) are provided in the part exposed to the left side. The combustion exhaust gas from the burner 10 is discharged to the outside from these exhaust ports 841 and 842. A handle 5 having a substantially semi-arcuate shape is rotatably supported on upper portions of both left and right sides of the upper housing 8.

  The lid body 3 is formed in a substantially circular shape in a plan view, and its outer shell portion is made of resin. The lid 3 is provided with a rear protruding portion 301 at the rear portion and a front protruding portion 302 at the front portion. The rear protruding portion 301 is formed in a substantially rectangular shape in a plan view and protrudes rearward from the rear portion of the lid body 3, and is rotatably supported by the rear end portion of the upper portion of the upper housing 8. As a result, the lid 3 can open and close the upper portion of the upper housing 8 that opens (see FIGS. 1 and 4). The front protruding portion 302 is formed in a substantially rectangular shape in plan view protruding forward from the front portion of the lid body 3. An engaging portion 303 is provided at a substantially central portion in the left-right direction of the front protruding portion 302. The engaging portion 303 engages with a projection 112 (see FIG. 4), which will be described later, provided on the upper front side of the upper housing 8. When the engaging portion 303 is pushed down, the engagement with the projection 112 is released, and the lid body 3 is pushed upward by the spring 308 described later. An inner lid 6 (see FIG. 4) is attached to the lower surface of the lid 3. When the lid body 3 is closed with respect to the upper housing 8, the inner lid 6 can seal the open upper portion of the inner pot 9.

  The external structure of the lower housing 7 will be specifically described with reference to FIGS. The right side wall and the left side wall of the lower housing 7 include a curved portion 171, a front side protruding portion 172, and a rear side protruding portion 173, respectively. The curved portions 171 are formed in the front-rear center portions of the right side wall and the left side wall, respectively, and are gently curved outward in a substantially arc shape. The front protrusion 172 linearly extends forward from the front end of the curved portion 171. The rear protrusion 173 linearly extends rearward from the rear end of the curved portion 171. The rear wall of the lower housing 7 is connected between the rear ends of the right side wall and the left side wall. A substantially rectangular opening 174 is formed on the front side of the lower housing 7. An operation panel 175 is attached to the opening 174. The operation panel 175 inclines downward from the upper part to the lower part with respect to the front. Thereby, the visibility and operability of the operation panel 175 can be improved.

  The through hole 16 is provided in the rear portion of the curved portion 171 on the right side surface of the lower housing 7, and opens rearward in a substantially circular shape. The gas supply pipe 19 projects rearward from the inside of the lower housing 7 through the through hole 16 in a substantially straight line shape. As a result, as shown in FIG. 3, when the housing 2 is viewed from the right, the gas supply pipe 19 protruding rearward from the through hole 16 has a rear protruding portion 173 protruding rearward in the lower housing 7. And overlap. Further, as shown in FIG. 2, when the housing 2 is viewed from the front, the gas supply pipe 19 is hidden by the curved portion 171 of the lower housing 7 and cannot be seen. Thereby, in the gas rice cooker 1, the gas supply pipe 19 can be made inconspicuous, and an obstacle can be less likely to be caught in the gas supply pipe 19.

  The structure of the upper housing 8 will be specifically described with reference to FIGS. 7 and 8. As shown in FIG. 7, the upper housing 8 is formed into a substantially tubular shape extending in the vertical direction by assembling four resin molded products of a front side plate member 11, a right side plate member 12, a left side plate member 13, and a rear side plate member 14 to each other. Composed. Since the upper housing 8 is made of a resin molded product, it can be made lighter than a metal housing.

  The front side plate member 11 is formed in a vertically long substantially rectangular shape in a front view. At the upper end of the front plate member 11, an upper surface portion 111 that projects rearward in a substantially horizontal direction is provided. The rear end portion of the upper surface portion 111 is curved forward in a substantially arcuate shape so as to correspond to the outer peripheral surface shape of the support cylinder 80 described later. A protrusion 112 protruding upward is provided at a substantially central portion of the upper surface of the upper surface portion 111. The engaging portion 303 of the lid 3 is engaged with the projection 112 from above. A pair of fitting portions 113 is provided at the right end portion and the left end portion of the lower surface of the upper surface portion 111 (see FIG. 8). Each fitting portion 113 projects downward. A pair of contact portions 115 are provided on the lower surface of the upper surface portion 111. The pair of contact portions 115 are substantially L-shaped when viewed from the side, and are separated from each other in the left and right directions. A pair of fitting portions 114 are provided in the lower right portion and the lower left portion on the rear surface of the front plate member 11. Each fitting portion 114 projects downward. A ridge portion 31 is provided on the upper right portion of the rear surface of the front plate member 11, and a ridge portion 32 is provided below the ridge portion 31. The ridges 31 and 32 are formed in a straight line extending in the vertical direction. A ridge portion 33 is provided on the upper left portion of the rear surface of the front plate member 11, and a ridge portion 34 is provided below the ridge portion 33. The ridges 33 and 34 are also formed in a straight line extending in the vertical direction.

  The rear plate member 14 has a front-rear substantially symmetrical shape with the front plate member 11. The rear plate member 14 is formed in a generally vertically long rectangular shape in rear view. An upper surface portion 141 that projects substantially horizontally to the front is provided at the upper end portion of the rear plate member 14. The front end portion of the upper surface portion 141 is curved rearward in a substantially arcuate shape so as to correspond to the outer peripheral surface shape of the support cylinder 80 described later. A rotary shaft support 142 is provided on the upper surface of the upper surface 141. The rotation shaft support portion 142 is formed in a substantially half-cylindrical shape in cross section extending in the left-right direction, and the rotation shaft 307 (see FIG. 5) is attached to the inside thereof. The rearward projecting portion 301 of the lid 3 is rotatably supported on the rotating shaft 307. A spring 308 (see FIG. 5) is provided so as to surround the rotation shaft 307. The spring 308 constantly biases the lid body 3 so as to push it upward.

  A pair of fitting portions 143 are provided at the right end portion and the left end portion of the lower surface of the upper surface portion 141. Each fitting portion 143 projects downward. A pair of contact portions 145 is provided on the lower surface of the upper surface portion 141. The pair of contact portions 145 are substantially L-shaped in a side view, and are separated from each other in the left and right directions. A pair of fitting portions 144 are provided on the lower right portion and the lower left portion on the front surface of the rear plate member 14. Each fitting portion 144 projects downward. A ridge portion 35 is provided on the upper right portion of the front surface of the rear plate member 14, and a ridge portion 36 is provided below the ridge portion 35. The ridges 35 and 36 are formed in a straight line extending in the vertical direction. A ridge portion 37 is provided on the upper left portion of the front surface of the rear plate member 14, and a ridge portion 38 is provided below the ridge portion 37. The ridges 37 and 38 are formed in a straight line extending in the vertical direction.

  A handle locking portion 101 (see FIG. 3) is provided on the upper portion of the rear surface of the rear plate member 14. The handle locking portion 101 is a plate-shaped portion that projects rearward substantially horizontally. On the upper surface of the handle locking portion 101, the handle 5 rotated backward can be placed. As a result, the handle 5 rotated rearward does not come into contact with the rear surface of the rear plate member 14 and is in a state of being supported substantially horizontally, so that the user can easily grasp the handle 5.

  The right side plate member 12 is formed in a substantially rectangular shape that is long in the front-back direction when viewed from the right side. The right side plate member 12 includes a curved portion 121, a front flat surface portion 122, and a rear flat surface portion 123. The curved portion 121 is formed at the central portion in the front-rear direction of the right side plate member 12, and is gently curved toward the right side in a plan view in a substantially arc shape. The front flat surface portion 122 extends substantially linearly forward from the front end portion of the bending portion 121. The rear flat surface portion 123 extends rearward from the rear end portion of the bending portion 121 in a substantially linear shape. The respective shapes of the curved portion 121, the front flat surface portion 122, and the rear flat surface portion 123 correspond to the respective shapes of the curved portion 171, the front protruding portion 172, and the rear protruding portion 173 of the lower housing 7.

  The upper end of the curved portion 121 is lower than the height of the upper end of each of the front flat surface portion 122 and the rear flat surface portion 123. Therefore, the cutout portion 125 is formed by the upper end portion of the curved portion 121, the upper rear end portion of the front flat surface portion 122, and the upper front end portion of the rear flat surface portion 123. The notch 125 is formed in a substantially U-shape that opens upward in right side view. A rib 128 protruding inward in the radial direction is provided at the upper end of the curved portion 121. A pair of fixing portions 129 are provided on the lower portion of the inner surface of the bending portion 121 at positions separated in the front-rear direction. The fixing portion 129 protrudes substantially horizontally inward, and a hole (not shown) penetrating in the vertical direction is provided in the central portion thereof. An insertion piece 127 is provided at the lower end of the curved portion 121 along the lower end. The insertion piece 127 projects downward. A handle hole 17 is provided in the vicinity of the upper end of the curved portion 121 and in a substantially central portion in the front-rear direction. One end of the handle 5 is rotatably supported by the handle hole 17 so as to be rotatable.

  A front engagement portion 21 is provided on an inner surface (a surface facing left) of the front flat surface portion 122 along the front end side of the inner surface. The front engagement portion 21 has a base portion protruding leftward in the shape of a rib, and is provided with a pair of hook-shaped portions 211 and 212 on the upper and lower portions of the base portion. The hook-shaped parts 211 and 212 are further protruded leftward from the base part of the front side engaging part 21, and the protruding tip ends are formed in a rear view substantially L-shape. Therefore, inside the hook-shaped portions 211 and 212, groove portions extending downward from above are formed.

  At the lower front part of the inner surface of the front flat surface part 122, a fitting part 251 and a fixing part 271 protruding leftward are provided. The fitted portion 251 includes a plate-shaped portion that projects substantially horizontally to the left, and a hole (not shown) that penetrates in the vertical direction in the center thereof. The fixed portion 271 is provided so as to be adjacent to the rear of the fitted portion 251. The fixed portion 271 includes a plate-shaped portion that extends substantially horizontally to the left from the inner surface of the front flat surface portion 122, and has a hole (not shown) penetrating in the up-down direction at the tip end side thereof. A fitted portion 261 (see FIG. 8) is provided on the inner surface of the front flat surface portion 122 and behind the front engagement portion 21. The fitted portion 261 includes a plate-shaped portion that projects substantially horizontally to the left, and a hole (not shown) that penetrates in the vertical direction in the center thereof.

  Although not described in detail, the rear engaging portion 22, the fitted portion 252, the fixed portion 272, and the fitted portion 262 are also formed on the inner surface of the rear flat portion 123 in a front-rear symmetrical shape with respect to the respective parts of the front flat portion 122. Each is provided (see FIG. 7). The rear engaging portion 22 is provided with a pair of hook-shaped portions 221 and 222.

  The left-side plate member 13 has a substantially left-right symmetrical shape with the right-side plate member 12, and thus will be briefly described. The left side plate member 13 also includes a curved portion 131, a front flat surface portion 132, and a rear flat surface portion 133, similarly to the right side plate material 12. A cutout portion 135 (see FIG. 2) is formed by the upper end portion of the curved portion 131, the rear end portion of the upper portion of the front flat surface portion 132, and the front end portion of the upper portion of the rear flat surface portion 133. A rib 138 protruding inward in the radial direction is provided at the upper end of the curved portion 131. A pair of fixing portions 139 are provided on the lower portion of the inner surface of the bending portion 131 at positions separated in the front-rear direction. The fixing portion 139 projects inwardly in a substantially horizontal direction, and a hole (not shown) penetrating in the vertical direction is provided in the central portion thereof. An insertion piece 137 is provided at the lower end of the curved portion 131 along the lower end. A handle hole 18 is provided in the vicinity of the upper end of the curved portion 131 and in a substantially central portion in the front-rear direction. The other end of the handle 5 is rotatably supported by the handle hole 18.

  A front engagement portion 23 is provided on an inner surface (a surface facing rightward) of the front flat surface portion 132 along the front end side of the inner surface. The front side engaging portion 23 has a base portion that protrudes rightward in a rib shape, and includes a pair of hook-shaped portions 231 and 232 on the upper and lower portions of the base portion. The hook-shaped parts 231 and 232 are further protruded rightward from the base part of the front side engagement part 23, and the protruding tip end side is formed in a rear view substantially L-shape bent upward. Therefore, inside the hook-shaped portions 231, 232, a groove portion extending downward from above is formed.

  At the lower portion on the front end side of the inner surface of the front flat surface portion 132, a fitting portion 253 and a fixing portion 273 protruding leftward are provided. The fitted portion 253 includes a plate-shaped portion that projects substantially horizontally to the right, and has a hole (not shown) that penetrates in the vertical direction in the center thereof. The fixing portion 273 is provided so as to be adjacent to the rear of the fitted portion 253. The fixing portion 273 includes a plate-shaped portion that extends substantially horizontally to the right from the inner surface of the front flat surface portion 132, and has a hole 273A that penetrates in the up-down direction on the tip end side thereof. A fitted portion 263 is provided on the inner surface of the front flat surface portion 122 and behind the front engagement portion 23. The fitted portion 263 includes a plate-shaped portion that projects substantially horizontally to the right, and has a hole (not shown) that penetrates in the vertical direction in the center thereof.

  Although not described in detail, the rear engagement portion 24, the fitting portion 254, the fixing portion 274, and the fitting portion 264 are also formed on the inner surface of the rear flat surface portion 133 so as to be symmetrical with respect to the respective parts of the front flat surface portion 132. It is provided (see FIG. 7). The rear engaging portion 24 is provided with a pair of hook-shaped portions 241 and 242. The fixing portion 274 is provided with a hole 274A.

  An example of a method of assembling the front side plate member 11, the right side plate member 12, the left side plate member 13, and the rear side plate member 14 will be described with reference to FIGS. 7 and 8. First, the worker stands the right side plate 12 and the left side plate 13 on both left and right sides and arranges them so as to face each other. In order to connect the front side plate member 11 and the right side plate member 12, to the respective groove portions of the hook-shaped portions 211 and 212 of the front side engaging portion 21 provided on the front side flat surface portion 122 of the right side plate member 12, the right side of the rear surface of the front side plate member 11 is provided. The ridges 31 and 32 (see FIG. 8) are inserted from above into below. At this time, the fitting portion 113 provided at the right end portion of the lower surface of the upper surface portion 111 of the front plate member 11 is fitted from above into the hole of the fitted portion 261 provided at the upper portion of the inner surface of the front flat surface portion 122 of the right plate member 12. Further, the fitting portion 114 provided in the lower right portion of the rear surface of the front plate member 11 is fitted from above into the hole of the fitted portion 251 provided in the lower portion of the inner surface of the front flat surface portion 122 of the right plate member 12. As a result, the front plate member 11 and the right plate member 12 are firmly connected to each other.

  Further, in order to connect the front side plate member 11 and the left side plate member 13, the rear surface of the front side plate member 11 with respect to the respective groove portions of the hook-shaped portions 231 and 232 of the front side engaging portion 23 provided on the front side flat surface portion 132 of the left side plate member 13. The left protrusions 33 and 34 (see FIG. 8) are inserted from above into below. At this time, the fitting portion 113 provided at the left end of the lower surface of the upper surface portion 111 of the front plate member 11 is fitted from above into the hole of the fitted portion 263 provided at the upper portion of the inner surface of the front flat surface portion 132 of the left plate member 13. Further, the fitting portion 114 provided in the lower left portion of the rear surface of the front plate member 11 is fitted from above into the hole of the fitted portion 253 provided in the lower portion of the inner surface of the front flat surface portion 132 of the left plate member 13. As a result, the front plate member 11 and the left plate member 13 are firmly connected to each other.

  Furthermore, in order to connect the rear side plate member 14 and the right side plate member 12, the rear side of the hook-shaped portions 221 and 222 of the rear side engaging portion 22 provided on the rear side flat surface portion 123 of the right side plate member 12 The ridges 35 and 36 on the right side of the front surface of the plate member 14 are inserted from above into below. At this time, the fitting portion 143 provided at the right end portion of the lower surface of the upper surface portion 141 of the rear plate member 14 is fitted into the hole of the fitted portion 262 provided at the upper portion of the inner surface of the rear flat surface portion 123 of the right plate member 12 from above. . Further, the fitting portion 144 provided at the lower right portion of the front surface of the rear plate member 14 is fitted from above into the hole of the fitted portion 252 provided at the lower portion of the inner surface of the rear flat surface portion 123 of the right plate member 12. As a result, the rear plate member 14 and the right plate member 12 are firmly connected to each other.

  Further, in order to connect the rear side plate member 14 and the left side plate member 13, to the rear side of the respective groove portions of the hook-shaped portions 241, 242 of the rear side engaging portion 24 provided on the rear side flat surface portion 133 of the left side plate member 13. The ridges 37 and 38 on the left side of the front surface of the plate member 14 are inserted from above to below. At this time, the fitting portion 143 provided at the left end portion of the lower surface of the upper surface portion 141 of the rear plate member 14 is fitted from above into the hole of the fitted portion 264 provided at the upper portion of the inner surface of the rear flat surface portion 133 of the left plate member 13. . Further, the fitting portion 144 provided in the lower left portion of the front surface of the rear plate member 14 is fitted from above into the hole of the fitted portion 254 provided in the lower portion of the inner surface of the rear flat surface portion 133 of the left plate member 13. As a result, the rear plate member 14 and the left plate member 13 are firmly connected to each other.

  In this manner, the front side plate member 11, the right side plate member 12, the left side plate member 13, and the rear side plate member 14 are firmly connected to each other to form the upper housing 8. As described above, with respect to the hook-shaped portions 211 and 212 of the front side engaging portion 21 of the right side plate member 12 and the hook-shaped portions 231 and 232 of the front side engaging portion 23 of the left side plate member 13, the right side protruding portion of the front side plate member 11 is formed. It is possible to insert 31, 32 and the left protrusions 33, 34 at the same time from above. Further, with respect to the hook-shaped portions 221 and 222 of the rear side engaging portion 22 of the right side plate material 12 and the hook-shaped portions 241 and 242 of the rear side engaging portion 24 of the left side plate material 13, the right side protruding strip of the rear side plate material 14 is provided. The parts 35 and 36 and the left side protrusions 37 and 38 can be simultaneously inserted from above. Thereby, the upper housing 8 can be easily assembled.

  The internal structure of the lower housing 7 will be specifically described with reference to FIG. 9. As described above, the lower housing 7 is formed in a substantially cylindrical shape with a bottom and an open top. Inside the lower housing 7, a support base 41, a burner 10, a gas amount adjusting device 40, a temperature sensor 42, an igniter electrode 44, a thermocouple 45, four first fixed cylinder parts 47, and four locking protrusions. 48 (only two are shown in FIG. 9), three second fixed tubular portions 49 (only one is shown in FIG. 9), a ring-shaped plate member 50 and the like are provided.

  The support base 41 is made of metal and is formed in a plate shape having a substantially horizontal plane, and is supported at a position spaced apart upward from the upper surface of the bottom portion of the lower housing 7. The gas amount adjusting device 40 is fixed to the lower side of the support base 41. The gas supply pipe 19 is connected to the gas amount adjusting device 40 via a gas pipe (not shown). A control device (not shown) that controls the operation of the gas rice cooker 1 based on the operation of the operation panel 175 is fixed to the support base 41. The gas amount adjusting device 40 adjusts the amount of gas supplied to the burner 10 based on a control signal from the control device.

  The burner 10 has a ring-shaped burner head 10A in the upper part, and is fixed so as to be vertically inserted into an opening (not shown) provided in a substantially central portion of the support base 41. The temperature sensor 42 is supported inside the burner head 10A so as to be able to move in and out in the vertical direction. The temperature sensor 42 is constantly urged upward by a spring (not shown) and can come into contact with the bottom of the inner pot 9. The temperature sensor 42 is surrounded by a cylindrical cover 42A. The igniter electrode 44 and the thermocouple 45 are fixed to the support base 41 and supported near the burner head 10A. The igniter electrode 44 ignites the burner 10 by generating a spark discharge according to a control signal from the control device. The thermocouple 45 detects the misfire of the burner 10 and outputs a detection signal to the control device.

  The four first fixed tubular portions 47 are located at one location near the front end of the curved portion 171 on the right side wall of the lower housing 7, at one location near the front end of the curved portion 171 on the left side wall, and at both left and right ends of the rear wall. They will be erected at two nearby locations. The four first fixed cylinder portions 47 are integrally molded with the lower housing 7. The first fixed cylindrical portion 47 is formed in a substantially cylindrical shape that protrudes upward from the upper surface of the bottom portion of the lower housing 7, and a fixing hole (not shown) is formed inside the upper portion thereof. The respective positions of the four first fixed cylindrical portions 47 correspond to the respective positions of the fixing portions 271, 272 of the right side plate member 12 and the fixing portions 273, 274 of the left side plate member 13 of the upper housing 8. The fixing portions 271, 272 of the right side plate member 12 of the upper housing 8 and the fixing portions 273, 274 of the left side plate member 13 are fixed to the corresponding four first fixing cylindrical portions 47 with screws (not shown).

  The two locking protrusions 48 of the four locking protrusions 48 are between the two first fixed cylindrical portions 47 located on the right side of the lower housing 7 and are located on the right side wall of the lower housing 7. It is erected near the inner surface. The remaining two locking projections 48 are erected between the two first fixed cylindrical portions 47 located on the left side of the lower housing 7 and near the inner surface of the left side wall of the lower housing 7. . These four locking protrusions 48 are integrally molded with the lower housing 7. The locking projection 48 is formed in a substantially columnar shape that projects upward from the bottom surface of the lower housing 7, and a gap is formed between the locking projection 48 and the upper end of the inner surface of each of the right side wall and the left side wall.

  The three second fixed tubular portions 49 are provided at the bottom of the lower housing 7 at equal intervals in the circumferential direction of a circle centered on the burner 10, and are integrally molded with the lower housing 7. The second fixed cylinder portion 49 is formed in a substantially cylindrical shape that protrudes upward from the bottom surface of the lower housing 7, and a fixing hole (not shown) is formed inside the upper portion thereof. The height of the second fixed cylinder portion 49 is lower than the height of the first fixed cylinder portion 47.

  The ring-shaped plate member 50 is made of metal and formed in a substantially ring shape in a plan view, and is fixed to the lower housing 7 while being supported above the support base 41. A circular opening 52 penetrating in the vertical direction is provided in the center of the ring-shaped plate member 50. The burner head 10A of the burner 10 is inserted and arranged inside the opening 52 (see FIGS. 5 and 6). An outer locking portion 53 is provided on the outer peripheral edge of the upper surface of the ring-shaped plate member 50. The outer locking portion 53 is formed along the outer peripheral edge of the ring-shaped plate member 50 and projects upward in the shape of a rib. An inner locking portion 54 is provided at the inner edge of the opening 52. The inner locking portion 54 is formed along the inner edge of the opening 52 and projects upward in a rib shape.

  Three recessed portions 501 cut out in a concave shape are provided at three locations on the outer peripheral edge of the ring-shaped plate member 50 that are spaced apart from each other at equal intervals. Each of these three recesses 501 is provided with a substantially L-shaped fixing piece 55 (only one is shown in FIG. 9). The fixing piece 55 hangs downward from the recess 501, and the lower end portion bends outward. A hole 55A penetrating in the vertical direction is formed at the lower end portion of the fixing piece 55 that is bent outward. The holes 55A of these three fixing pieces 55 correspond to the respective positions of the three second fixing cylindrical portions 49 provided on the bottom of the lower housing 7 and are fixed with screws (see FIG. 5). Accordingly, the three fixing pieces 55 are fixed on the three second fixing cylindrical portions 49, so that the ring-shaped plate member 50 is fixed to the bottom portion of the lower housing 7.

  The ring-shaped plate member 50 is provided with three fixing holes 56 penetrating in the up-down direction at three positions spaced apart from each other at equal intervals in the circumferential direction. The support cylinder 80 is fixed to the three fixing holes 56 with screws. Further, two locking holes 57 are provided in the vicinity of the outer peripheral edge of the ring-shaped plate member 50 and at positions displaced from each other in the circumferential direction. The two locking holes 57 are formed in a slit shape that is long in the circumferential direction. Further, a ring-shaped warm heater 58 is arranged and attached to the upper surface of the ring-shaped plate member 50 so as to be along the outer surface of the inner locking portion 54.

  The internal structure of the upper housing 8 will be described with reference to FIG. 9. Inside the upper housing 8, an outer heat shield cylinder 60, an inner heat shield cylinder 70, a support cylinder 80, etc. are coaxially housed.

  The outer heat shield cylinder 60 is made of metal and is formed in a substantially cylindrical shape extending in the vertical direction. The outer heat shield tube 60 has a size corresponding to the outer peripheral edge portion of the ring-shaped plate member 50. The outer heat shield tube 60 is placed on the upper surface of the ring-shaped plate member 50.

The inner heat shield cylinder 70 is also made of metal and is formed into a substantially tubular shape having a smaller diameter than the outer heat shield cylinder 60. The inner heat shield cylinder 70 is coaxially inserted inside the outer heat shield cylinder 60. At the upper end of the inner heat shield cylinder 70, a pair of protrusions 71 are provided on the front side and the rear side facing each other. The pair of projecting portions 71 each project upward in a substantially rectangular shape. A pair of recesses 72 is provided between the pair of protrusions 71. The pair of recesses 72 are arranged so as to face each of the cutouts 125 and 135 of the upper housing 8. At the lower end of the inner heat shield 70, two locking protrusions 75 are provided at positions separated from each other. The locking projection 75 projects downward from the lower end portion in a substantially rectangular shape. The positions of the two locking protrusions 75 correspond to the positions of the two locking holes 57 provided in the ring-shaped plate member 50.
The inner heat shield cylinder 70 is also placed on the upper surface of the ring-shaped plate member 50.

  The support cylinder 80 is also made of metal, and is formed in a generally cylindrical shape with a flange extending in the vertical direction. The support cylinder 80 includes a cylinder portion 81, a collar portion 82, and a bottom plate 89. The tubular portion 81 is formed in a substantially tubular shape having a smaller diameter than the inner heat shield tube 70. A protruding portion (not shown) protruding inward in the radial direction is provided at the lower end portion of the tubular portion 81 that is open. The projecting portion is provided with three fixing holes (not shown) at positions at equal intervals in the circumferential direction. These three fixing holes correspond to the respective positions of the three fixing holes 56 of the ring-shaped plate member 50.

  The flange portion 82 is provided on the upper end portion of the tubular portion 81, and projects outward in the radial direction in a substantially flange shape. The brim portion 82 includes an upper surface portion 83, an outer peripheral surface portion 84, and a lower surface portion 85. The upper surface portion 83 projects radially outward from the upper end portion of the tubular portion 81, and is formed in a substantially ring shape in plan view. The outer peripheral surface portion 84 hangs from the outer peripheral portion of the upper surface portion 83 and forms the outer peripheral surface of the flange portion 82. In the outer peripheral surface portion 84, a pair of concave portions 86 (only the concave portion 86 on the front side portion is shown in FIG. 9) cut out in a substantially rectangular shape from the lower portion upward are provided in the front side portion and the rear side portion facing each other. . As a result, the outer peripheral surface portion 84 is divided into the right side portion 84A and the left side portion 84B. A pair of exhaust ports 841 are provided side by side in the circumferential direction on the right side portion 84A. A pair of exhaust ports 842 (see FIG. 2) are provided side by side in the circumferential direction on the left side portion 84B. The exhaust ports 841 and 842 are formed in a slit shape that is long in the circumferential direction. The exhaust ports 841 and 842 communicate with the inside of the collar portion 82. The lower surface portion 85 projects radially inward from the lower end portion of the outer peripheral surface portion 84 (see FIG. 11).

  A pair of left and right outlets 87 that extend radially and are long in the circumferential direction (only the outlet 87 on the left side is shown in the figure) is provided on the left side and the right side in the upper part of the tubular portion 81. The respective positions of the pair of left and right outlets 87 correspond to the respective positions of the right side portion 84A and the left side portion 84B of the outer peripheral surface portion 84. A closing plate 88 is fixed by rivets near the lower edge of the outflow port 87 on the outer peripheral surface of the upper portion of the tubular portion 81. The closing plate 88 is formed in a substantially inverted L shape in cross section, and a portion projecting outward in the radial direction is arranged inside the flange portion 82 and directly above the lower surface portion 85 (see FIG. 11).

  A receiving portion 831 and a pair of relief portions 832 are provided on the upper surface portion 83 of the flange portion 82. The receiving portion 831 is formed to have a concave cross section along the circumferential direction of the upper surface portion 83 having a substantially ring shape in a plan view, and can receive water droplets generated in the rice cooking process. The pair of escape portions 832 are provided at the respective center portions in the circumferential direction of the right side portion and the left side portion of the upper surface portion 83, and the outer peripheral portions of the upper surface portion 83 protruding in a rib shape are cut out in a substantially rectangular shape. . The pair of escape portions 832 are connected to the receiving portion 831. The escape portion 832 can guide the water droplets accumulated in the receiving portion 831 to the outer peripheral surface portion 84 side of the right side portion 84A and the left side portion 84B.

  The bottom plate 89 is a ring-shaped metal plate in a plan view, and is fixed to the bottom of the tubular portion 81, which is open, from the inside. An insertion hole 891 penetrating in the vertical direction is provided in the central portion of the bottom plate 89. The burner head 10A of the burner 10 is inserted into the insertion hole 891 from below. On the upper surface of the bottom plate 89, a raised portion 892 having a substantially ring shape in plan view is provided so as to surround the insertion hole 891. The raised portion 892 is formed by press working or the like so as to bulge upward in a mountain shape. The raised portion 892 corresponds to the position of the warm heater 58 attached to the upper surface of the ring-shaped plate member 50, and accommodates the warm heater 58 inside. The bottom plate 89 is provided with three fixing holes 893 at positions equidistant from each other in the circumferential direction. The three fixing holes 893 correspond to the respective positions of the three fixing holes 56 provided in the ring-shaped plate member 50 and the three fixing holes provided in the protruding portion of the lower end portion of the tubular portion 81. The bottom plate 89 is fixed to the protruding portion of the tubular portion 81 with a screw.

  The support structure of the outer heat shield cylinder 60, the inner heat shield cylinder 70, and the support cylinder 80 will be described with reference to FIGS. 9 and 10. The outer heat shield tube 60 is installed on the upper surface of the ring-shaped plate member 50 fixed to the lower housing 7. The inner edge portion of the outer locking portion 53 contacts the lower portion of the outer peripheral surface of the outer heat shield tube 60 (see FIG. 10). As a result, the outer heat shield tube 60 is positioned on the upper surface of the ring-shaped plate member 50 and can be prevented from being displaced in the radial direction. The inner heat shield cylinder 70 is inserted and arranged inside the outer heat shield cylinder 60, and is installed on the upper surface of the ring-shaped plate member 50. The two locking projections 75 provided at the lower end of the inner heat shield cylinder 70 are respectively locked in the two locking holes 57 of the ring-shaped plate member 50. As a result, the inner heat shield cylinder 70 is also positioned on the upper surface of the ring-shaped plate member 50 and can be prevented from being displaced in the radial direction (see FIG. 10). A predetermined gap is formed between the inner surface of the outer heat shield tube 60 and the outer surface of the inner heat shield tube 70. The predetermined gap functions as a heat insulating layer for air.

  The support cylinder 80 is inserted and arranged inside the inner heat shield cylinder 70, and is arranged on the upper surface of the ring-shaped plate member 50. With respect to the three fixing holes 56 provided in the ring-shaped plate member 50, the three fixing holes 893 provided in the bottom plate 89 of the support cylinder 80 and the three fixing holes provided in the protruding portion of the support cylinder 80 (not shown) ) Is positioned, and a screw (not shown) is fastened from above the bottom plate 89. As a result, the support cylinder 80 is fixed to the upper surface of the ring-shaped plate member 50 via the bottom plate 89. Inside the insertion hole 851 of the bottom plate 89, the burner head 10A, the temperature sensor 42, the igniter electrode 44, and the thermocouple 45 are inserted and arranged (see FIG. 6). The warm heater 58 is housed inside the raised portion 892 of the bottom plate 89. As a result, the warm heater 58 can keep the inner pot 9 supported inside the support cylinder 80 via the bottom plate 89.

  The support cylinder 80 is surrounded by the outer heat shield cylinder 60 and the inner heat shield cylinder 70 (see FIG. 10). The pair of protrusions 71 provided on the upper end portion of the inner heat shield cylinder 70 are arranged inside the pair of front and rear recesses 86 provided on the outer peripheral surface portion 84 of the collar portion 82 of the support cylinder 80 (see FIG. 9). . Accordingly, it is possible to prevent the radiant heat from the support cylinder 80 from directly transferring to the upper portions of the front plate member 11 and the rear plate member 14 of the upper housing 8. The pair of left and right recesses 72 provided on the upper end portion of the inner heat shield cylinder 70 are arranged immediately below the right side portion 84A and the left side portion 84B of the outer peripheral surface portion 84 of the flange portion 82, respectively. As a result, the outer heat shield cylinder 60 and the inner heat shield cylinder 70 are restricted from moving upward by the flange portion 82 of the support cylinder 80.

  In the gas rice cooker 1, since the outer heat shield cylinder 60 and the inner heat shield cylinder 70 are supported by the ring-shaped plate member 50 for supporting the warm heater 58, the outer heat shield cylinder 60 and the inner heat shield cylinder 70 are supported. Since it is not necessary to separately provide a component for supporting the, it is also advantageous in terms of cost.

  As shown in FIGS. 5 and 6, the inner hook 9 is inserted into the support cylinder 80 from above. The upper flange portion 9A of the inner hook 9 contacts the upper surface portion 83 of the collar portion 82 of the support cylinder 80. As a result, the inner hook 9 is suspended inside the support cylinder 80 and positioned above the burner 10.

  The fixing structure of the upper housing 8 to the lower housing 7 will be described with reference to FIGS. 6, 7, and 9. As described above, the upper housing 8 has a substantially tubular shape in which the front plate member 11, the right plate member 12, the left plate member 13, and the rear plate member 14 are connected to each other. In the upper housing 8, a fixed portion 272 (see FIG. 7) provided on the rear side of the lower portion of the inner surface of the right side plate member 12, a front fixed portion 129 of the pair of front and rear fixing portions 129, and a lower portion of the inner surface portion of the left side plate member 13 are provided. The fixed portion 274 provided on the rear side (see FIG. 7) and the fixed portion 139 on the front side of the pair of front and rear fixed portions 139 are the four first fixed tubular portions 47 provided on the bottom surface of the lower housing 7 ( (See FIG. 9) and fixed with screws.

  Further, the insertion piece 127 (see FIG. 7) provided at the lower end portion of the right side plate member 12 includes two locking protrusions 48 (see FIG. 9) located on the right side of the bottom surface of the lower casing 7. 7 is inserted from above into the gap between the inside surface of the right side wall of 7 and pressed (see FIG. 6). On the other hand, the insertion piece 137 (see FIG. 7) provided at the lower end portion of the left side plate member 13 includes two locking protrusions 48 (see FIG. 9) located on the left side of the bottom surface of the lower housing 7, and the lower housing. It is inserted from above into the gap between the inner surface of the left side wall of 7 and the inner surface (see FIG. 6). As a result, the lower end of the upper housing 8 is fixed to the lower housing 7 while surrounding the outer heat shield cylinder 60, the inner heat shield cylinder 70, and the support cylinder 80.

  As described above, in this embodiment, the upper housing 8 and the support cylinder 80 are independently fixed to the lower housing 7. Accordingly, since the upper casing 8 can be arranged around the supporting barrel 80 in a state where the upper casing 8 is not in contact with the supporting barrel 80 heated during rice cooking, the upper casing 8 can be made of resin.

  In this embodiment, the right side plate member 12 and the left side plate member 13 are common parts. Thus, of the pair of front and rear fixing portions 271, 272 of the right side plate member 12, the one corresponding to the first fixed cylindrical portion 47 may be fixed with a screw. Similarly, in the pair of front and rear fixing portions 129, the one corresponding to the first fixing cylindrical portion 47 may be fixed with a screw. The same applies to the left side plate member 13.

  The flow of combustion exhaust gas and the flow of cooling air in the gas rice cooker 1 will be described with reference to FIGS. 6 and 11. As shown in FIG. 6, the combustion exhaust gas of the burner 10 flows upward through a gap between the outer peripheral surface of the inner pot 9 and the inner peripheral surface of the support cylinder 80. The combustion exhaust gas flows into the inside of the collar portion 82 of the support cylinder 80. Here, as shown in FIGS. 1, 2 and 11, the right side portion 84A and the left side portion 84B of the outer peripheral surface portion 84 of the collar portion 82 are provided at the upper end portions of the right side surface and the left side surface of the upper housing 8, respectively. It is arranged inside the pair of left and right cutouts 125 and is exposed to the outside. As a result, as shown in FIG. 11, the combustion exhaust flows along the inside of the collar portion 82 along the outside and is provided at the pair of exhaust ports 841 provided at the right side portion 84A of the outer peripheral surface portion 84 and the left side portion 84B. It is discharged to the outside through a pair of exhaust ports 842 (see solid line arrow P1 in FIG. 11). Therefore, it is possible to prevent the hot air of the combustion exhaust from directly contacting the upper housing 8 made of resin, so that the possibility of discoloration of the upper housing 8 can be reduced.

  On the other hand, inside the gas rice cooker 1, an outer heat shield cylinder 60 and an inner heat shield cylinder 70 are arranged between the support cylinder 80 and the upper housing 8. Cooling air flows from the lower side to the upper side in the gap between the outer heat shield cylinder 60 and the upper housing 8 due to the draft force associated with the heating by the burner 10 (see arrow P2 of the chain double-dashed line in FIG. 11). When the cooling air flows upward, the cooling air comes into contact with the lower surface portion 85 arranged below the collar portion 82 of the support cylinder 80 and is knitted outward. Here, in the pair of left and right cutouts 125 and 135 of the upper housing 8, a gap 90 is formed between the lower surface portion 85 of the flange 82 and the cutouts 125 and 135. As a result, the cooling air knitted outward is discharged to the outside through the gap 90 located below the exhaust ports 841 and 842. Therefore, the combustion exhaust gas discharged from the exhaust ports 841 and 842 can be prevented from directly contacting the upper housing 8. Further, the discharge direction (P1) of the combustion exhaust gas and the discharge direction (P2) of the cooling air are the same direction. As a result, the flow of the cooling air becomes an air curtain, so that the combustion exhaust gas is less likely to hit the cutouts 125 and 135. As a result, it is possible to more effectively prevent the heat of the combustion exhaust gas passing through the exhaust ports 841 and 842 from causing the notches 125 and 135 of the upper housing 8 to become highly heated. Therefore, it is possible to more effectively reduce the possibility of discoloration of the upper housing 8.

  Further, as shown in FIGS. 1 and 2, the outer peripheral surface portion 84 of each of the right side portion 84A and the left side portion 84B of the collar portion 82 of the support cylinder 80 is formed with the cutout portions 125 and 135 of the upper housing 8. The shape of the outer surface is the same. As a result, the gas rice cooker 1 can improve the aesthetic appearance around the notches 125 and 135 on the outer surface of the upper housing 8.

  As shown in FIGS. 5 and 6, inside the gas rice cooker 1, the outer heat shield cylinder 60 and the inner heat shield cylinder 70 are arranged outside the support cylinder 80 with a gap therebetween. Thereby, the heat transfer from the support cylinder 80 to the upper housing 8 is effectively blocked. Thereby, the upper housing 8 can be made of resin.

  In addition, in the present embodiment, the outer heat shield tube 60 and the inner heat shield tube 70 are placed and positioned on the upper surface of the ring-shaped plate member 50, and the flange portion 82 of the support cylinder 80 allows the outer heat shield tube 60 and the inner heat shield tube 60 to be positioned inside. The support cylinder 80 is inserted into the inner heat shield cylinder 70 from above so as to be located above the heat shield cylinder 70 and fixed to the upper surface of the ring-shaped plate member 50. Then, as described above, the outer heat shield cylinder 60 and the inner heat shield cylinder 70 are restricted in radial displacement by the ring-shaped plate member 50, and are prevented from moving upward by the flange portion 82 of the support cylinder 80. As a result, the outer heat shield cylinder 60 and the inner heat shield cylinder 70 can support the outer heat shield cylinder 60 and the inner heat shield cylinder 70 on the upper surface of the ring-shaped plate member 50 without undergoing steps such as caulking and screwing. . Thereby, the assembly process of the gas rice cooker 1 can be simplified.

  Further, a pair of contact portions 115 (see FIG. 8) are provided on the lower surface of the upper surface portion 111 of the front plate member 11 of the upper housing 8, and a pair of abutting portions are also provided on the lower surface of the upper surface portion 141 of the rear plate member 14. A contact portion 145 (see FIG. 7) is provided. Further, a rib 128 is provided on the upper end portion of the curved portion 121 of the right side plate member 12, and a rib 138 is provided on the upper end portion of the curved portion 131 of the left side plate member 13. The pair of contact portions 115, the pair of contact portions 145, and the ribs 128 and 138 are not in contact with the support cylinder 80 at the time of shipping. Even if a shock such as a drop is applied to the gas rice cooker 1 or a secular change occurs due to these, the upper casing 8 has the pair of contact portions 115, the pair of contact portions 145, and the ribs 128 and 138. It comes into contact with the support cylinder 80 via the. Then, in the substantially L-shaped contact portions 115 and 145, only the tip end portion that protrudes toward the inside of the upper housing 8 contacts the support cylinder 80. Therefore, since the contact between the upper casing 8 and the support casing 80 can be minimized, heat transfer from the support casing 80 to the upper casing 8 can be effectively prevented.

  Further, water droplets generated during the rice cooking process collect in the receiving portion 831 provided on the upper surface portion 83 of the collar portion 82 of the support cylinder 80 (see FIGS. 9 to 11). The water droplets collected in the receiving portion 831 are guided toward the outer peripheral surface portion 84 side of the collar portion 82 by the pair of escape portions 832. As described above, since the combustion exhaust gas and the cooling air are discharged to the outside on the outer peripheral surface 84 side of the right side portion 84A and the left side portion 84B, it is a portion that has little influence on the gas combustion in the burner 10. As a result, in the gas rice cooker 1, the water droplets accumulated in the receiving portion 831 can be guided to the outer peripheral surface portion 84 side, which is less affected by gas combustion and the like in the burner 10, by the pair of escape portions 832.

  As described above, the gas rice cooker 1 according to the present embodiment is formed in the bottomed tubular shape with the burner 10, and the flame mouth portion of the burner head 10A faces the inside of the insertion hole 891 provided in the bottom plate 89. In addition, a support cylinder 80 that supports the inner pot 9 above the burner 10 and surrounds the inner pot 9 is provided, and a housing 2 that houses the burner 10 and the support barrel 80 inside. The gas rice cooker 1 supports the inner pot 9 into which water and rice are charged by the support cylinder 80, closes the lid 3 provided in the housing 2, burns the burner 10, and burns combustion exhaust gas from the burner to the inner pot. The rice is cooked by passing it through the space between the support tube 80 and the support tube 80. The housing 2 is made of resin and includes a lower housing 7 and an upper housing 8. The lower housing 7 houses the burner 10 inside. The upper housing 8 is disposed above the lower housing 7 and houses the support cylinder 80 inside. At the bottom of the lower housing 7, a ring-shaped plate member 50 and four first fixed cylindrical portions 47 are provided upright, independently of the ring-shaped plate member 50. The upper housing 8 is fixed to the four first fixed cylinder portions 47 with screws. Thereby, the upper casing 8 can be arranged around the support cylinder 80 in a state of not contacting the support cylinder 80 heated during rice cooking. Therefore, it is possible to prevent heat from being directly transferred from the support cylinder 80 to the upper housing 8, so that in the gas rice cooker 1 including the resin housing 2, the influence of heat during rice cooking can be minimized.

  In the above description, the support cylinder 80 is an example of the “support” in the present invention. The bottom plate 89 of the support cylinder 80 is an example of the “bottom portion” in the present invention. The ring-shaped plate material 50 is an example of the "first fixing portion" in the present invention. The 1st fixed cylinder part 47 is an example of the "2nd fixed part" of the present invention. The pair of abutting portions 115 provided on the front plate member 11, the pair of abutting portions 145 provided on the rear plate member 14, the ribs 128 provided on the right side plate member 12, and the 138 provided on the left side plate member 13 are It is an example of the "projection part" of invention.

  The present invention is not limited to the above embodiment, and various modifications can be made. The housing 2 of the above-described embodiment is formed in a substantially cylindrical shape, but as long as it has a tubular shape, its outer shape can be variously changed, and may be, for example, a rectangular tubular shape. Both the lower housing 7 and the upper housing 8 are made of resin, but the lower housing 7 may be made of metal.

  In the upper housing 8, the ridges 35 to 38 are provided on the front side plate member 11 and the rear side plate member 14 side, and the hook-shaped portions 211, 212, 221, 223, 231, 232 are provided on the right side plate member 12 and the left side plate member 13 side. , 241 and 242 are provided, but they may be provided in reverse, and hook-shaped portions may be provided on the front side plate member 11 and the rear side plate member 14 side, and a protrusion may be provided on the right side plate member 12 and the left side plate member 13 side. Good.

  The hook-shaped portions 211, 212 and the like of the above-described embodiment are formed in a substantially L shape in which the tip side bends upward, so that the inside has a groove portion that can be inserted from above to below, but the tip side is below. The groove may be formed in a substantially L-shape that bends in a direction, and a groove portion that can be inserted from the lower side to the upper side may be provided inside.

  The hook-shaped portions 211, 212 and the like of the above-described embodiment are formed in a substantially L shape in which the tip side bends upward, and thus have a groove portion that can be inserted inward from the upper side to the lower side. The groove may be formed in a shape different from that of, for example, a U-shaped groove.

  Although the upper housing 8 of the above-described embodiment is configured by assembling four resin molded products with each other, it may be configured with four or more sheets, or may be configured with three or two sheets.

  In the support cylinder 80 of the above embodiment, the bottom plate 89 is fixed to the bottom of the cylinder portion 81, but the bottom plate 89 and the cylinder portion 81 may be integrally formed.

  On the upper surface of the ring-shaped plate member 50 of the above-described embodiment, the lower end portion of the outer heat shield tube 60 is positioned by the outer locking portion 53, and the pair of locking holes 57 are inserted and locked. Although the lower end of the inner heat shield cylinder 70 is positioned by doing so, it may be positioned by a structure other than these.

  In the above-described embodiment, the front side plate member 11 of the upper housing 8 is provided with the pair of contact portions 115, the rear side plate member 14 is provided with the pair of contact portions 145 (see FIG. 7), and the right side plate member 12 is provided. The ribs 128 are provided and the left side plate member 13 is provided with the ribs 138, but the number, shape, position, etc. thereof can be freely changed. Preferably, each of the front side plate member 11, the rear side plate member 14, the right side plate member 12, and the left side plate member 13 is provided with a “protruding portion”.

  In the above embodiment, the outer peripheral surface portion 84 of the right side portion 84A of the flange portion 82 of the support cylinder 80 is provided with the pair of exhaust ports 841, and the outer peripheral surface portion 84 of the left side portion 84B is provided with the pair of exhaust ports 842. However, the number, shape, arrangement, etc. of the exhaust ports can be freely changed. The outer peripheral surface portion 84 of the right side portion 84A has an outer peripheral surface shape that is a substantially rectangular shape that is long in the left-right direction, but may have another shape. In accordance with this, the shapes of the outer side surfaces of the cutouts 125 and 135 of the upper housing 8 may be changed.

  In the above-described embodiment, the receiving portion 831 and the pair of relief portions 832 are provided on the upper surface portion 83 of the collar portion 82 of the support cylinder 80, but the number and position of the relief portions 832 can be freely changed.

  In the above embodiment, the outer heat shield cylinder 60 and the inner heat shield cylinder 70 are provided inside the housing 2, but the number of heat shield cylinders may be one, or two or more.

1 Gas Rice Cooker 2 Housing 3 Lid 7 Lower housing 8 Upper housing 9 Inner kettle 10 Burner 47 First fixed cylinder part 50 Ring plate material 80 Support cylinder 89 Bottom plate 115 Contact part 128 Rib 138 Rib 145 Contact part

Claims (2)

The burner and the bottomed tubular shape are formed so that the flame opening of the burner faces the inside of the opening provided at the bottom, the inner pot is supported above the burner, and the periphery of the inner pot is surrounded. A support, and a housing for accommodating the burner and the support inside, supporting the inner pot into which water and rice are put on the support, and closing a lid provided on the housing, In a gas rice cooker which burns the burner and passes the combustion exhaust gas of the burner to a space between the inner pot and the support to cook rice,
The housing is made of resin,
A lower housing that houses the burner inside,
An upper casing that is disposed above the lower casing and accommodates the support inside,
The lower housing is
A first fixing portion to which the bottom portion of the support is fixed,
A gas rice cooker, comprising: a second fixing portion that is provided independently of the first fixing portion and to which a lower end portion of the upper housing is fixed. The gas rice cooker according to claim 1, wherein at least a part of an inner surface of the upper casing is provided with a protrusion that protrudes toward the inside of the upper casing.

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