JPS6140252Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cooking device that performs cooking heating, that is, uneven heating at a high temperature, after the completion of cooking rice.

Embodiments of the present invention shown in the drawings will be described in detail below.

First, FIG. 1 is a schematic cross-sectional view of the cooking device according to the present invention, and the heat-retaining rice cooker is roughly divided into a main body 1, an inner pot 2, an inner lid 3, an outer lid 4, and the like.

The container body 1 includes an outer body 5, a bottom lid 6 that constitutes an exterior body with the body 5, an outer pot 7 located inside the outer body 5, and an outer pot 7 disposed between the upper ends of the outer body 5 and the outer pot 7. It consists of an upper ring 8, and a heat insulating material (not shown) loaded between the outer body 5, the outer pot 7, and the upper ring 8.

The outer circumferential body 5 is equipped with a hinge angle 9 and a hinge receiver 10 on one side of the upper part, and a dew receiver 12 is detachably provided below a flow hole 11 formed by vertically penetrating the hinge receiver 10. This dew receiver 12 receives the dew that is received by the upper ring 8 and drips through the flow hole 11. or,
The outer body 5 is provided with a hook angle 13, a latch hook 14, and a hook bar 15 at an upper position opposite to the position of the hinge angle 9, etc.

The bottom cover 6 is made of a synthetic resin molded product, and the upper end of the outer periphery is fitted into the lower end opening of the outer periphery body 5. This bottom cover 6 has a plurality of support legs 16 projecting downward at the peripheral edge of the lower surface, a cord reel storage recess 17 formed on the lower surface with the central portion bulging upward, and the recess 17.
A terminal accommodating portion 18 formed by further bulging upward at the center thereof and a plurality of mounting bosses 19 formed at the peripheral edge of the accommodating recess 17 by bulging upward are integrally molded. A cord reel 20 is stored in the storage recess 17, and a cord (not shown) pulled out from the cord reel 20 is led out through a notch 21 in the peripheral wall of the storage recess 17. Therefore, the installation of the cord reel 20 is as follows:
This is done by inserting a plurality of mounting tongues 24 erected around the periphery of the lid 23 of the storage case 22 into long holes 25 formed in the bottom lid 6, and then bending or twisting them. connection terminal 2
6 portions are set so as to face inside the terminal storage portion 18. The connection terminal 26 is used to electrically connect the cord to the electrical components on the device body 1 side, and a lead wire (not shown) on the device body 1 side is wired in a part of the terminal housing 18. A connection port 27 is formed for this purpose. A large number of small holes 28 for heat dissipation are bored in appropriate places on the lower surface of the bottom cover 6 except for the storage recess 17.

Also, a switch panel 29 is attached at a suitable location where the outer body 5 and the bottom cover 6 are joined. This switch panel 29 is made of a synthetic resin molded product, and has an operation port 30 for a switch mechanism (to be described later), three display holes 31 arranged vertically on one side of the operation port 30, and a peripheral edge of the lower half. It has a flange 32 located at the periphery of the upper half, and a plurality of locking ribs 33 located at a predetermined interval from each other on the periphery of the upper half. On the other hand, notches 34 and 35 are formed in both the outer peripheral body 5 and the bottom cover 6, and the notches 34 and 35 form an opening into which the switch panel 29 is fitted when the two are connected and fitted. A fitting groove 36 is formed on the periphery of the notch 35 of the bottom cover 6, and a plurality of rattling prevention ribs 37 are formed on the outer wall surface of the fitting groove 36.
Of course, the fitting groove 36 and the rib 37 are integrally molded into the bottom cover 6 when it is molded.

Thus, the switch panel 29 is in a state in which the periphery of the notch 34 of the outer body 5 is held between the front upper half periphery 29a and the locking rib 33, and the flange 32 is fitted into the fitting groove 36 of the bottom cover 6. This attached state is reliably maintained by the joint fit between the outer body 5 and the bottom cover 6.

The outer pot 7 has a wide upper groove 38 on the outer surface and a narrow lower groove 39 located below the upper groove 38, which are formed around the entire circumference. Integrated cooking heater 41
A heat-retaining heater 42 is disposed and fixed at both ends by tightening with fastening means such as screws 43, and another heat-retaining heater 44 is similarly fixed in the lower groove 39. are doing.
Further, a mounting surface 45 is formed on the outer surface of the outer pot 7 at a suitable location between the upper and lower concave grooves 38 and 39, and a heat-retaining heat-sensitive element, such as a thermal reed switch 47, is mounted on this mounting surface 45 via a heat-sensitive element mounting angle 46. is installed.

On the other hand, the bottom of the outer pot 7 has a through hole 4 in the center.
8 is bored, and a plurality of bulging attachment portions 49 are formed around this through hole 48 as a center. The bulging mounting portion 49 has one side open to form a locking hole 50, and has a through hole 51 in the center. The bulging mounting portion 49 of the outer pot 7 is provided with a ring-shaped hot plate 5 having a rice cooking heater 53 integrally cast therein.
2 and heater angle 54 with screws (not shown)
It is installed by

The heating plate 52 has a screw hole 55 formed opposite to the through hole 51 of the bulging mounting portion 49, and the upper and lower ends of the heater angle 54 are bent in opposite directions as shown in FIG. 56 and 57, a locking pawl 58 is provided protrudingly provided at the tip of the upper mounting piece 56, a through hole 59 is provided protrudingly provided, and a screw hole 60 is formed in the lower mounting piece 57. Then, the hot plate 52 is arranged on the inner bottom surface of the outer pot 7 so that the screw hole 55 and the through hole 51 match, and the upper mounting piece 56 of the heater angle 54 is brought into contact with the lower surface of the bulging mounting portion 49. Locking claw 5
8 into the engagement hole 50 and the through holes 51 and 59.
The outer pot 7, the hot plate 52, and the heater angle 54 are fixed by inserting the through holes 59 and 51 and screwing a screw into the screw hole 55 in a state where the outer pot 7, the hot plate 52, and the heater angle 54 are aligned.

The attachment boss 19 of the bottom cover 6 comes into contact with the lower attachment piece 57 of the heater angle 54, and the boss 19 is attached with a screw (not shown). That is, the bottom cover 6 is fixed to the heater angle 54 with a screw that passes through the mounting boss 19 and is screwed into the screw hole 60. At this time, although the heater angle 54 is attached to the outer pot 7 side with a single screw, it is prevented from rotating and positioned by the engagement of the locking pawl 58 and the engagement hole 50, so the heater angle 54
The attachment boss 19 of the bottom cover 6 can be easily matched with the lower attachment piece 57 of the bottom cover 6, and the attachment work of the bottom cover 6 can be easily performed.

The terminal portion of the rice-cooking heater 53 cast into the hot plate 52 is led out to the outer bottom surface side through a lead-out hole 61 formed in the bottom surface of the outer pot 7. Additionally, a rice cooking thermostat 6 is exposed on the top surface of the heating plate 52.
2 passes through the through hole 48 so as to be vertically movable, and is elastically supported by the outer pot 7 by a spring 63. Furthermore, a heat-sensitive element for cooking, such as a thermal reed switch 64, is installed on the outer bottom surface of the outer pot 7.
This thermal reed switch 64 has an appropriate distance from the outer bottom surface of the outer pot 7 due to a heat-sensitive element mounting angle 64'.

A switch mechanism assembly 65 is installed in the space between the bottom cover 6 and the outer bottom surface of the outer pot 7. The assembly 65 includes a shaped base plate 66, a rice cooking lever 68 whose intermediate portion is rotatably supported by a shaft 67 between the opposing side walls of the base plate 66, and a rice cooking lever 68 which is rotatably supported between the side walls of the base plate 66. The middle part arranged in parallel with the rice cooking lever 68 is connected to the shaft 6.
Power supply lever 69 rotatably supported with 7
and one common fixed contact plate 71 and two movable contact plates 72, 7, which are attached between the free edge of the side wall of the substrate 6.
3 is interposed between the cold board 66 and the power lever 69, and the biasing direction is reversed during rotation of the power lever 69, and the power lever 69
A reversing spring 74 selectively holds the rice cooker in the upper position and the lower position, and an insulating plate 7 protruding from the rice cooking lever 68.
An actuator (not shown) that extends through the power supply lever 69 and moves the movable contact plate 72 toward and away from the fixed contact plate 71 as the rice cooking lever 68 rotates; It has an actuator (not shown) that moves the movable contact plate 73 toward and away from the fixed contact plate 71 as the lever 69 rotates, and an appropriate number of through holes 76 fixed on the substrate 66 at both side edges. It is composed of a mounting angle 75, and both levers 68, 69 are connected to each other.
Knobs 77 and 78 are respectively attached to the same side ends of the rice cooking lever 68, and the other end of the rice cooking lever 68 is connected to a rod 79 of the rice cooking thermostat 62. Further, when the levers 68 and 69 are pressed down, the power lever 69 rotates in the same direction, and the lever 78 of the power lever 69 rotates in the same direction when the lever 77 side of the rice cooking lever 68 is pushed down. The rice cooking levers 68 are set in such a relationship that when the side is pushed up, the rice cooking levers 68 rotate back together in the same direction, and during operations other than the above, both levers 68 and 69 rotate independently. The switch mechanism assembly 65 thus constructed is attached to the outer bottom surface of the outer pot 7, and in the attached state, the knobs 77, 78 are exposed to the operation port 30 of the switch panel 29. That is, the mounting angle 75 is fixed to the mounting surface 80 formed by expanding inward on the outer bottom surface of the outer pot 7 with a screw (not shown) that is inserted through the through hole 76 and screwed onto the outer pot 7. do.

The fixed contact plate 71 and the movable contact plate 72 constitute a rice cooking switch to be described later, and the fixed contact plate 71 and the movable contact plate 73 constitute a power switch to be described later.

The inner lid 3 closes the opening by bringing its outer peripheral edge into close contact with the opening step of the inner pot 2, and is curved upward so that the center is higher as shown in FIG. The reason for this curve is to prevent the inner lid 3 from curving downward and lifting the periphery when the temperature inside the inner pot 2 drops and the internal pressure drops after rice cooking is completed. Hot air and steam will no longer escape from the periphery of the lid 3.

Further, a flat heat receiving surface 81 is formed at the center of the inner lid 3, and a retaining ring 82 is fixed to the heat receiving surface 81 surrounding the heat receiving surface 81. This retaining ring 82 is partially equipped with a locking means consisting of a locking body 83 that can freely appear and retract from the heat-receiving surface 81 and a spring 84 that always biases the locking body in the outward direction.

Further, the inner lid 3 has a mounting surface 85 formed at a position closer to the side than the heat receiving surface 81, and a valve hole 86 is formed in the center of this mounting surface 85, and a steam cylinder is formed surrounding the valve hole 86. 87 will be erected. This steam cylinder 8
7 is fixed to the inner cover 3 so as to form a small gap between the lower end and the upper surface of the inner cover 3, that is, the mounting surface 85,
There is a valve hole 86 inside according to the internal pressure fluctuation of the inner pot 2.
It is equipped with a ball valve 88 that opens and closes. Further, the mounting surface 85 is formed flat so that the steam cylinder 87 can be vertically installed.

It consists of a lid main body 89 of the outer lid 4, a lid cover 90 in which a heat insulating material (not shown) is inserted between the main body 89, and a handle cover 91, and a lid hinge 92 fixed to one side is attached to a hinge receiver. 10 with a shaft 93, the upper part of the inner cover 3 can be opened and closed. Further, a latch metal fitting 94 is fixed to the outer lid 4 at a position opposite to the lid hinge 92, and a latch lever 96 is rotatably supported on the latch metal fitting 94 with a shaft 95, so that the tip of the latch lever 96 is connected to the latch lever 14. The operation button 97 of the latch lever 96 penetrates through the handle cover 91 and projects outward.

The lid cover 90 has a central portion bulged upward to form an assembly storage portion 98 on the lower surface, that is, the inner surface thereof, and a heat transfer assembly 99 is disposed in the storage portion 98.

The heat transfer assembly 99 has a cylindrical shape and has a partition wall 1 inside.
01 into an upper chamber 102 and a lower chamber 103, and a lower chamber 103 of the main body 100.
It is composed of a thermistor 104 that acts as a heat-retaining heater housed in the chamber, and a heat transfer plate 105 that closes the lower opening of the lower chamber 103 and holds the thermistor 104. The assembly main body 100 has two through holes 106 formed in the partition wall 101 at an interval of 180 degrees, and a fitting portion 107 of a hexagonal nut, for example, at the end of the through hole 106 on the upper chamber 102 side.
form. Therefore, the lower chamber 10 of the assembly main body 100
Heat exchanger plate 10 with the thermistor 104 housed in
5 is attached by a screw 108 that is screwed into a hexagonal nut (not shown) in a fitting part 107 through a through hole 106.

Further, a terminal hole 109 is formed in the partition wall 101 of the assembly main body 100 for allowing the terminal of the thermistor 104 to emerge toward the upper chamber 102 side, and an arc-shaped rib is formed on the outside of the terminal hole 109 on the upper chamber 102 side. 110 is installed protrudingly. Further, a pair of upper and lower flanges 111 are formed at the upper end of the outer peripheral surface of the assembly main body 100, and an annular packing 112 is fitted between the upper and lower flanges 111. As shown in FIG. 18, this annular packing 112 has a seal portion 113 projecting obliquely downward on the outer periphery of the upper end.

Therefore, such a heat transfer assembly 99 is a lid cover 9.
A presser ring 1 is fitted into the assembly storage section 98 of 0 in a vertically movable manner and is attached to the lid cover 90 in this fitted state.
14. Also, in this state, the heat transfer assembly 99 has a spring 132 which is located around the outer periphery of the rib 110 and is compressed between the lid cover 90 and the heat transfer assembly 99 .
It is always urged downward, that is, in the protruding direction.
On the other hand, a lead wire to be connected to the terminal of the thermistor 104 is wired through a connection port 115 formed in the upper wall of the assembly storage portion 98 and biased toward the hinge side.

Here, the advantages of the shape of the annular packing 112 will be described. Seal portion 1 of annular packing 112
13 is very easily deformed because it protrudes diagonally downward, and when the heat transfer assembly 99 is inserted into the assembly storage part 98 and moved up and down, the resistance is small, and the insertion work can be easily performed and the up and down movement is smooth. Moreover, the elastic contact of the seal portion 113 with the wall surface of the assembly storage portion 98 is ensured, and the heat transfer assembly 99 is
It is possible to reliably prevent moisture from entering the interior.

The presser ring 114 has three through holes 1 facing each other to three screw holes 116 formed at 120 degree intervals around the assembly storage portion 98 of the lid cover 90.
17 and is inserted through the through hole 117 and screwed into the screw hole 116 to attach the lid cover 90.
Fixed. A rotation preventing means is interposed between the presser ring 114 and the assembly main body 100. This anti-rotation means includes a plurality of ribs 119 formed vertically on the outer peripheral surface of the assembly main body 100,
The ribs 119 are configured by grooves 120 formed on the inner peripheral edge of the retainer ring 114, and all the ribs 119 and grooves 120 fit together only at one location in the circumferential direction. ing. That is, when all the ribs 119 and grooves 120 are fitted together, the assembly main body 100 and the presser ring 114 are always in a constant positional relationship, and the rotation preventing means is fixed to the assembly main body 100, that is, the heat transfer assembly. It also performs 99 positioning functions.

Therefore, by marking both the lid cover 90 and the retaining ring 114 and determining in advance the through holes 117 that match each screw hole 116, the outer lid 4 can be aligned with the shaft 9.
19, the heads of the screws 108, 118 that appear on the inside of the screws 108, 118 can be arranged in an orderly manner as shown in FIG.
Even though it is exposed, you can still look relatively good.

In FIG. 19, arrow A indicates the latch side, and arrow B indicates the hinge side. Of course, since the heat transfer assembly 99 is prevented from rotating, the internal lead wires will not be twisted.

Thus, the inner cover 3 is removably fitted to the lower end of the heat transfer assembly 99 attached to the outer cover 4 as described above.
A locking protrusion 121 is formed on the outer periphery of the lower end of the assembly main body 100 to engage with the locking body 83 when the retaining ring 82 of the inner lid 3 is fitted to the lower end.
3 and the locking protrusion 121 to attach the inner cover 3 to the outer cover 4 side. In this attached state, the heat transfer plate 105 and the heat receiving plate 81 come into contact with each other, and the thermistor 1
04 will be transferred to the inner lid 3.

Further, a guide tube 1 is provided for the steam tube 87 to pass through the lid main body 89 and the lid cover 90 of the outer lid 4 and to extend outward.
22 and 123 are formed, respectively. A flange 124 extending inward is formed on the opening edge of the guide tube 122 of the lid main body 98, and the flange 124 allows the steam tube 87 to
The gap around the area is made to appear as small as possible. Therefore, this allows the guide tubes 122, 12
3 does not create a large gap around the steam cylinder 87 on the outer surface, and since the inner diameter of the guide cylinders 122 and 123 can be made large, the steam cylinder 87 can be tilted slightly when the inner cover 3 is attached. The steam cylinder 87 can be easily inserted into the guide cylinders 122, 123 even if the steam cylinder 87 is inserted into the guide cylinders 122, 123.
123 There is also less risk that the attachment part to the inner lid 3 will break if it hits a wall.

The thermal rice cooker is configured as described above.
The electrical circuit is as shown in Figure 21. That is, the rice cooking heater 53, the rice cooking switch 125,
A rice cooking circuit connected to a power source consisting of a series circuit of a power switch 126 and a temperature fuse 127, a series circuit of a thermal reed switch 47 and a heat-retaining heater 42, a heat-retaining heater 44, and a thermistor 1.
04 connected in parallel to each other and connected in parallel to the rice cooking switch 125 via a current fuse 128, and a series circuit of the rice cooking heater 41 and the thermal reed switch 64. A cooking circuit that is connected in parallel to the series circuit of the switch 125, a rice cooking display circuit that has a rice cooking lamp 129 that is connected in parallel to the rice cooking heater 53, and a heat retention display that has a heat retention lamp 130 that is connected in parallel to the heat retention circuit. The circuit and a cooking indicator circuit having a cooking lamp 131 connected in parallel to the cooking heater 41 form an electric circuit of a heat-retaining rice cooker. The above lamps 129, 130, 131 are connected to the switch panel 2.
9 are arranged in each of the display holes 31 . The thermal reed switch 47 controls the supply of electricity to the warming heater 42 to keep the cooked rice at a temperature suitable for keeping it warm. Further, the thermal reed switch 64 is closed at a predetermined temperature or higher, and the rice finishing heater 41 performs uneven heating at a high temperature after the rice is cooked, so that the temperature of the outer bottom of the outer pot 7 is lowered to a predetermined temperature. It opens at a certain time to end uneven heating. In the above-mentioned embodiment, since the rice cooking circuit and the cooking circuit are connected in parallel, the rice cooking heater 41 starts generating heat in the middle of rice cooking and performs cooking after the rice is cooked.

In the case of the cooking device of the present invention having the above-mentioned configuration, it is possible to perform the cooking heating after the completion of cooking, that is, the uneven heating at high temperature, using the cooking heater, and the uneven heating from the side prevents the bottom of the rice from being burnt. In addition to being able to cook rice deliciously without causing the rice to cook more than necessary, the heat-sensitive element for finishing the rice can be placed outside the outer pot, where the temperature changes significantly after the rice is cooked, without being affected by the heat of the finishing heater. By installing it on the bottom surface, even if there is a slight variation in the set temperature of the heat-sensitive element, the variation in the cooking time can be suppressed to a minimum, and the operating temperature can be easily set, which is very beneficial.

[Brief explanation of the drawing]

Figure 1 is a schematic cross-sectional view of the proposed cooking device, Figure 2 is a bottom view of the top and bottom lid, Figure 3 is A, B in Figure 2,
C, D, E, F, G, H, I, J sectional views. Fig. 4 is a configuration explanatory diagram showing the mounting structure of the cord reel, Fig. 5 is a sectional view showing the terminal storage section of the upper bottom cover, Fig. 6a is a front view of the switch panel, Fig. 6b is A, A sectional view of Fig. 6a, Fig. 7 is a plan view of the same outer pot, Fig. 8 is A, B, C of Fig. 7,
O, D, E, F, H cross-sectional views, Figure 9 is a configuration explanatory diagram showing the tightening structure of the heater for cooking and keeping warm, Figures 10 a and b are a plan view and a longitudinal sectional view of the heater angle as above. , FIGS. 11a and 11b are a side view and a bottom view showing the switch mechanism assembly as above, FIGS. 12 and 13 are a bottom view and a sectional view showing the inner cover as above,
Figures 14 and 15 are cross-sectional views showing the upper lid cover at different positions; Figures 16a, b, and c are plan views, left half sectional side views and bottom views of the assembly; Figure 17; a, b are a plan view and a sectional view showing the right half of the same presser ring, FIG. 18 is a sectional view showing the annular packing, FIG. 19 is an explanatory view showing the installed state of the above heat transfer assembly, and FIG. 20. 21 is a sectional view showing a part of the main body of the upper lid, and FIG. 21 is an electric circuit diagram of the same. 2: Inner pot, 5: Outer pot body, 7: Outer pot, 41: Heater for cooking, 53: Heater for cooking rice, 6
4: Thermal reed switch (thermal element for tightening the rice), 125: Rice cooking switch.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. An exterior body, an outer pot disposed within the exterior body, and an inner pot disposed at the inner bottom of the inner pot that can be moved in and out of the outer pot and connected to a power source via a rice cooker switch. In the rice cooker equipped with a rice cooking heater, a rice cooking heater is provided on the outer surface of the outer pot to heat the rice after the rice has been cooked. A cooking appliance characterized in that a heat-sensitive element for cooking is installed on the outer bottom surface of the outer pot, which terminates the cooking heating when the temperature reaches a predetermined temperature due to a decrease in temperature. 2. The cooking appliance according to claim 1, which has an appropriate distance between the outer bottom surface of the outer pot and the heat-sensitive element for cooking. 3. Utility model registration as set forth in claim 1, in which a switch that closes at a predetermined temperature or higher is used as a heat-sensitive element for cooking, and the switch is connected in series with a heater for cooking to form a cooking circuit. Cooking device.