JP3341197B2 - Cooking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooker such as an electric rice cooker used for cooking in ordinary households.

[0002]

2. Description of the Related Art FIG. 21 is a sectional view showing the structure of a conventional cooking device, and FIG. 22 is an enlarged sectional view of a part of FIG. First,
The outline of the configuration of the conventional cooking device will be described based on FIG. 1 is a main body of the cooker, and 2 is an outer lid attached to the upper part of the main body 1 so as to be opened and closed. 5 is an outer case of the main body 1, 1
Reference numerals 3 and 9 denote a bottom frame and an upper frame which are arranged inside the outer case 5 and serve as storage portions for the pan 15. Reference numeral 6 denotes a radiation tube arranged so as to surround the outer periphery of the upper portion of the pot 15, which is formed by bending a thin metal plate into a cylindrical shape. Reference numeral 8 denotes a heat insulating heater provided on the outer peripheral portion of the radiation tube, 23 denotes an induction heating coil appropriately disposed on the outer bottom of the bottom frame 13, 25 denotes ferrite disposed outside the induction heating coil 23, and 21 denotes a bottom frame 13 This is a storage frame cover for storing the data. Next, the configuration of the heat retaining heater 8 will be described with reference to FIG. The insulation heater 8 is made of an aluminum tape 8 for heat reflection using a resistance wire 8a coated with insulation.
The b is attached to the outer peripheral surface of the radiation tube 6.

The operation of assembling the heat retaining heater 8 in the conventional cooking device configured as described above will be described. First, the protective paper on one side of the double-sided adhesive tape is peeled off, and a resistance wire 8
a. Next, with the resistance wire 8a adhered to the double-sided adhesive tape facing inside, the radiation tube 6 is wound so as to be at the same height at a predetermined position on the outer periphery of the radiation tube 6. The resistance wire 8 a is pressed from above the wound double-sided adhesive tape protection paper, and the resistance wire 8 a is firmly adhered to the radiation tube 6. Next, the remaining protective paper of the double-sided adhesive tape is peeled off, and an aluminum tape 8b is attached to the surface. When attaching the aluminum tape 8b, care should be taken so that the widths of the upper and lower sides of the resistance wire 8a are equal and wrinkles are not formed.

[0004] The heat retaining heater 8 incorporated as described above
The operation of the radiation tube 6 will now be described.
The pot 15 is heated by the radiant heat, and the food in the pot 15 is kept warm. Therefore, since the heat of the heat retaining heater 8 is transmitted to the pan 15 with a wide width through the metal radiation tube 6, there is a feature that the body of the pan 15 is relatively uniformly heated.

[0005]

However, the above-mentioned conventional heat retaining heater 8 has the following problems. In other words, the work of attaching the resistance wire 8a and the aluminum tape 8b to the outer peripheral surface of the radiation tube 6 must be performed manually, which is extremely troublesome. In addition, since the resistance wire 8a is stronger than the double-sided adhesive tape,
In some cases, a part of the resistance wire 10a did not fit into the circumferential surface of the radiation tube 6 and the resistance wire 10a floated up or shifted in position. When the resistance wire 8a rises, a gap is formed between the resistance wire 8a and the radiation tube 6, so that heat cannot be sufficiently transmitted. Further, if the mounting position of the resistance wire 8a is displaced, it may cause unevenness in the heat retention. As a result, troubles such as waste of electric power and a decrease in heat retention (cooking) accuracy have occurred.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to realize an economical cooker in which the positioning and assembly of the heat source for keeping heat is easy, and the heat transfer speed is high. It is intended for.

[0007]

In a cooking device according to the present invention, a pot is stored in a storage frame formed by combining a plurality of vertically divided frames, and a line arranged around the storage frame.
In the thing which keeps the cooking thing in the pot by the heat source of a shape, the storage part which stores the heat source body in the perimeter of any of the plurality of frames is provided, and it is combined with the frame provided with the storage part. A frame body is formed so as to be able to fit into the storage section, and the storage section is provided with a cylindrical body disposed through a gap in which the heat source body can be installed, and an inward formed at a lower end portion of the cylindrical body. It is formed of a projection and a partition wall that divides a gap between the cylindrical body and the storage frame into two in the axial direction and integrates the cylindrical body and the storage frame.

[0008]

[0009]

[0010]

[0011]

In the cooker constructed as described above, the line
Since the storage and holding portion for storing the heat source in the form of a two-tiered upper and lower structure by the partition wall, the outer periphery of the storage frame can be heated over a wide range, and the occurrence of temperature unevenness can be prevented.

[0012]

[0013]

[0014]

[0015]

[Embodiment 1] Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating the configuration of an embodiment of the present invention. FIG. 2 is an enlarged view of a main part of FIG. 1, and portions corresponding to the conventional example are denoted by the same reference numerals. In FIG. 1, reference numeral 1 denotes a substantially cylindrical cooker main body, and reference numeral 3 denotes a lid attached to an upper portion of the main body 1 so as to be openable and closable. The lid 3 is connected to the main body 1 by a hinge (not shown) provided at the upper end of the main body 1, and pivots around the hinge (not shown) to open and close the upper part of the main body 1. . 5 is an outer case of the main body 1, 7 is an annular upper frame 9
And a storage frame constituted by a cylindrical side frame 11 and a pan-bottomed bottom frame 13. The configuration of each frame forming the storage frame 7 will be described later in detail. Reference numeral 15 denotes a pan which is removably stored in the storage frame 7. The outer case 5, the upper frame 9, the side frames 11, and the bottom frame 13 are all formed of a heat-resistant synthetic resin. Further, a metal clad material is used for the pot 15, and its configuration is such that, for example, the outside is formed of a stainless steel having magnetic properties, and the inside is formed of a material having relatively good heat conductivity such as aluminum or copper. It has a layer structure.

The upper frame 9 has a substantially annular dew receiving groove 9a on its upper surface for storing dew falling from an inner lid described later.
An annular projection 9b is formed on the lower surface. Further, as shown, the side frame 11 has an annular upper groove 11a and a lower groove 11b, and has a substantially H-shaped cross section.
Further, the upper end portion 13a of the bottom frame 13 is formed to be thick and has a flange portion 13b. The connection structure of the upper frame 9, the side frame 11, and the bottom frame 13 will be described with reference to FIG. The protrusion 9b of the upper frame 9 is fitted into the upper groove 11a of the side frame 11, and the upper end 13a of the bottom frame 13 is in contact with both banks of the lower groove 11b of the side frame 11. In addition, as shown in FIG. 1, the upper frame 6 includes the upper end of the outer case 5 and the side frame 1.
The upper end of the main body 1 is connected to eliminate the gap around the upper part of the main body 1.

Reference numeral 17 denotes a heat retaining heater inserted into the lower groove 11b of the side frame 11, and is formed by covering a resistance wire 17a made of nickel-chrome steel. Heating heater 17
A gap g is formed between the upper surface of the heater 1 and the side frame 11.
This is because the depth of the lower groove 11b is set deep. The heat retaining heater 17 serves as a heat source for keeping heat, and uses a resistance wire made of nickel-chrome steel. Reference numeral 19 denotes a temperature detector installed at the bottom or center of the pot 15.

The temperature detector 19 is constantly urged upward by a spring (not shown), and is pressed against the pot 15 to make contact therewith. The temperature detector 19 is disposed in a detection hole 13a formed in the center of the bottom frame 13, and is fitted so as to be movable up and down within a certain range. 21 is a storage frame cover for storing the bottom frame 13, 23 is provided between the bottom frame 23 and the storage frame cover 21, and is an inner pot induction heating coil for heating the pan 15, 25 is an inner pot induction heating coil 23
Ferrites 27 for absorbing the magnetic lines of force generated from the main body 1 so as not to affect the outside of the main body 1 are mounting legs.

Although not shown, a control board, a code reel, and the like are mounted on the bottom of the main body 1, and an operation unit including a plurality of displays and touch keys is provided on the front. I have. Next, the configuration of the lid 3 will be outlined. Lid 3
Has an outer lid 31, a cylindrical inner lid 33 disposed inside the outer lid 31, and a disk-shaped inner lid 45 disposed below the inner lid 33. Also, as other components, the inner lid 3
3, a heat insulator 37 disposed below the heat insulator 37, a radiator plate 41 disposed below the lid heater 39, and an inner lid 45 fixed to the radiator plate 41 and detachable. And a rubber packing disposed between the inner lid 33 and the inner lid 45. The outer peripheral surface of the inner lid 45 is in close contact with the opening edge 15a of the pan 15 with the lid 3 closed, as shown in the figure. Reference numeral 47 denotes a steam discharge port provided through the outer lid 31, the heat insulating material 37, and the heat radiating plate 41.

Next, a method for assembling the heat retaining heater 17 of the embodiment of the present invention having the above-described configuration will be described. Prior to assembling the heat retaining heater 17, the upper frame 9 and the side frame 11 having the shape shown in FIG.
Then, a warming heater 17 to which a bottom frame 13 and a lead wire (not shown) are connected is prepared.

First, the prepared upper frame 9 is placed upside down on a work table. Next, the side frame 11 which is turned upside down in the same manner is placed from above the upper frame 9 on the work table, and the upper frame 11a of the side frame 11 is fitted into the protrusion 9b of the upper frame 9 to thereby put the side frame 11 into place. It is connected to the upper frame 9. At this time,
The side frame 11 which is connected upside down on the upper frame 9 is provided with the lower groove 1.
1b is open upward. Next, the opened lower groove 11
Inside b, only the heater 17 is inserted while leaving the lead wire.

After the heat retaining heater 17 is inserted, the inverted bottom frame 13 is fitted on the side frame 11. Side frame 11
The heater 17 is connected to the lower groove 1 by the connection of
It is stored in a closed space (gap G) formed by 1b and the front end surface of the bottom frame 13. For bonding the side frame 11 and the bottom frame 13 described above, a heat-resistant adhesive is used as necessary. The storage frame 7 is assembled by the upper frame 9, the side frame 11, and the bottom frame 13 which are thus connected in three stages, whereby the inner peripheral surface follows the shape of the pot 15 and corresponds to the body of the pot 15. Pot 15 with heat insulation heater 17 placed in place
Is formed. The storage frame 7 to which the heat retaining heater 17 is attached is assembled to the main body 1 as shown in FIG. 1, and a lead wire is led out from a predetermined drawing position of the side frame 11 at the time of this assembly.

The heater 17 is assembled as described above, and other components are attached to complete the rice cooker. When the cooked rice is cooked by the completed rice cooker, the rice is cooked, and the process proceeds to a heating process, in which the heater 17 is energized.
Generates heat. The heat generated by the heater 17 is stored in the storage frame 7.
The pot 15 is heated to keep the food inside warm.

According to the first embodiment, the housing frame 7 is formed by fitting the ends of the resin-molded upper frame 9, side frame 11, and bottom frame 13 to each other.
At the same time when the side frame 11 and the bottom frame 13 are assembled, the heat retaining heater 17 is inserted and mounted in the gap G of the joint. As described above, in this embodiment, since the storage frame 7 is formed of three parts of the same material, the manufacturing process can be simplified as compared with the conventional example in which different materials are combined. In addition, the troublesome manual work of the conventional example in which the heat source body is wound and adhered by using an adhesive tape or the like is eliminated, and the assembling and positioning can be performed at once. Furthermore, since the heater 17 is surrounded by the housing frame 7 made of resin, the heater 17 can be made of a resistance wire without an insulating coating. In this case, the material cost can be reduced and the gap can be reduced. Since the portion G can be made smaller, there is also an advantage that the storage frame 7 can be made more compact.

When the heater 17 is energized, the heater 17 generates heat and its entire length is extended by thermal expansion. At this time, in the present embodiment, since the depth of the gap G is set to be larger than the outer diameter of the heat retaining heater 17, the thermal expansion of the heat retaining heater 17 can be sufficiently absorbed. For this reason, the thermal insulation of the thermal insulation heater 17 is caused by the thermal expansion of the thermal insulation heater 17 seen in the conventional example.
There is no problem that the tape 7 is peeled off from the adhesive tape or the aluminum tape 10b. If the external dimensions of the heat retaining heater 17 are set to be substantially the same as the width of the gap G during energization, the heat retaining heater 17
Is in contact with the wall surface of the gap G, and the wall surface can be reliably heated.

In the first embodiment, an example is shown in which the heat-retaining heater 17 is used as a heat-retaining heat source. However, the heat source is not limited to the heat-retaining heater, and may be, for example, an induction heating coil (not shown). And so on. Also, the storage frame 7
Has been described as an example in which the upper frame 9 or the lower frame 1 is formed by two components, namely, the side frame 11 and the bottom frame 1.
3, the same effect as in the first embodiment can be obtained even if the gap G is provided at the joint between the united part and the remaining part.

Embodiment 2 FIG. FIG. 3 is a perspective view of a main part of another embodiment of the present invention, and FIG. 4 is a sectional view of the main part. The side frame 50 in the present embodiment includes a cylindrical inner cylinder 50a and an outer cylinder 50b having a larger diameter than the inner cylinder 50a provided outside the inner cylinder 50a via a partition wall 50c. . The partition wall 50c substantially divides the outer cylinder 50b in the axial direction, thereby forming an upper groove 51 and a lower groove 52 between the inner cylinder 50a and the outer cylinder 50b. The upper groove 51 and the lower groove 52 accommodate a heat retaining heater 53 constituting a heat source body. Also, as shown in FIG. 4, the upper groove 51 in which the heat retaining heater 53 is housed,
The protrusion 55a of the upper frame 55 is fitted. Further, a plurality of inward projections 50B protruding toward the inner cylinder 50a are formed at a lower end of the outer cylinder 50b at predetermined intervals. The heat retaining heater 53 is configured so as not to protrude from the upper groove 51 or the lower groove 52 by the protrusion 55a and the inward protrusion 50B. The partition wall 50c is provided with a plurality of notches 50d communicating between the upper groove 51 and the lower groove 52.

According to the present embodiment configured as described above, the heat retaining heater 53 is provided with the upper groove 51 formed in two upper and lower stages.
The side frame 50 can be heated widely, and can be used to prevent unevenness in the temperature of the pan 15. Further, since the inward projection 50B protrudes from the lower groove 52, the heater 53 can be held in the lower groove 52 only by inserting the heat retaining heater 53 over the inward projection 50B into the lower groove 52. Further, a part of the heat of the heat retaining heater 53 housed in the lower groove 52 is transferred to the notch portions 50 provided on the partition wall 50c.
d, and enters the upper groove 51. And this heat,
This is useful for warming the upper frame 55 which is in contact with the outside air and easily radiates heat.

The heat source is not limited to the heat retaining heater 53. Further, the side frame 50 and the bottom frame (not shown) may be formed integrally. Further, in order to previously store and hold the heat retaining heater 53 in the upper groove 51, a plurality of inward projections projecting toward the inner cylinder 50a are formed at the upper end of the outer cylinder 50b at predetermined intervals, similarly to the lower end of the outer cylinder 50b. You may.

Embodiment 3 FIG. FIG. 5 is a perspective view of a main part of another embodiment of the present invention, and FIG. 6 is a partial view of FIG. 5 viewed from above. The side frame 60 in this embodiment includes a cylindrical inner cylinder 60a and an outer cylinder 60b provided on the outer side of the inner cylinder 60a and having a larger diameter than the inner cylinder 60a. A bottom portion 60B extending inward is provided at a lower end portion of the outer cylinder 60b, and an end of the bottom portion 60B is formed so as to be joined to an outer peripheral surface of the inner cylinder 60a. Therefore, a gap G is formed between the inner cylinder 60a and the outer cylinder 60b, and a warming heater 65 described later is inserted into the gap G. The bottom portion 60B is provided with both ends of the heat retaining heater 65 and through holes 63 through which lead wires 67 connected to both ends of the heater 65 can pass. The heat retaining heater 65 is set to have substantially the same length as or slightly shorter than the entire length of the annular gap portion G.
Is connected.

In the present embodiment configured as described above, the heat retaining heater 65 is disposed in the gap G,
Is inserted through the passage hole 63, the heat retaining heater 65 can be reliably held in the gap G, and the assembling work can be stabilized. If the thickness and shape of the heat retaining heater 65 and the lead wire 67 are made different and the outer shape of the lead wire 67 and the shape of the passage hole 63 are made the same, the heat retaining heater 65 can be more reliably held in the gap G. Can be. Note that the heat source is not limited to the heat retaining heater 65.

Embodiment 4 FIG. FIG. 7 is a perspective view of a main part of another embodiment of the present invention, and FIG. 8 is a plan view of another embodiment of the present invention. In this embodiment,
A cutout portion 60c is provided in a part of the outer cylinder 60b shown in the third embodiment, and a notch 60c is further provided with a partition plate 60d for partitioning the outer cylinder 60b to the left and right, and a pressing wall 60e for preventing the lead wire 67 from floating. Things. The inner cylinder 60a is provided with a concave portion 60f into which a part of a connecting portion 69 between a heat retaining heater 65 and a lead wire 67 described later is fitted. The length of the heat retaining heater 65 in this embodiment is set to be slightly shorter than the entire length of the annular gap G, and lead wires 67 are connected to both ends of the heater via connection portions 69.

In this embodiment constructed as described above, the heat retaining heater 65 is inserted into the gap G, and a part of the connecting portion 69 is fitted into the concave portion 60f. Then, the lead wire 67 is bent downward along the partition plate 60d, and its end is extended below the outer cylinder 60b. At this time, the lead wire 67 passes through the inside of the holding wall 60e, and is prevented from being bent outward by the holding wall 60e. As described above, in the present embodiment, since a part of the connection portion 69 is fitted into the recess 60f, the heat retaining heater 65 is stably housed in the gap G. The gap G is formed by the partition plate 60d.
, It is possible to prevent the left and right lead wires 67 from becoming entangled. Further, the pressing wire 60e prevents the lead wire from being bent outward. As a result, even if vibrations or impacts that are likely to occur during transportation of the product are applied, the heat retaining heater 65 and the lead wires do not move from the predetermined positions. In addition,
The heat retaining heater 65 may be constituted by another heat source.

Embodiment 5 FIG. 9 and 10 are a perspective view and a sectional view of a main part of another embodiment of the present invention, respectively. In this embodiment, the storage frame is constituted by the upper frame 70 and the bottom frame 75. The bottom frame 75 includes a cylindrical inner cylinder 75a and an inner cylinder 75.
and an outer cylinder 75b provided on the outer side of the inner cylinder 75a and having a larger diameter than the inner cylinder 75a. An inner middle portion of the outer cylinder 75b is provided with a corrugated bottom surface 75B extending inward, and an end of the bottom surface 75B is formed so as to be joined to the outer peripheral surface of the inner cylinder 75a. Therefore, the inner cylinder 75a
A gap G is formed between the outer cylinder 75b and the outer cylinder 75b.
A warming heater 65 to be described later is inserted.

On the other hand, the upper frame 70 is basically formed in a cylindrical shape, and its lower end 70a is formed into a waveform that fits into the waveform of the bottom surface 75B of the bottom frame 75. With the above-described structure, the heat retaining heater 65 inserted into the gap G is formed in a waveform between the lower end portion 70a of the upper frame 70 and the bottom surface portion 75B of the bottom frame 75. Thereby, the heat retention heater 6
5 comes into contact over a wide area of the side surface of the bottom frame 75, and the bottom frame 75 will be extensively heated.
As a result, the temperature unevenness of the pot 15 is reduced, and the heat retention performance is improved.

Embodiment 6 FIG. FIG. 11 is a sectional view of a main part of another embodiment of the present invention. In this embodiment, similarly to the fifth embodiment, the storage frame is configured by the upper frame 80 and the bottom frame 85, and the bottom frame 85
Is composed of a cylindrical inner cylinder 85a and an outer cylinder 85b provided outside the inner cylinder 85a and having a larger diameter and a smaller height than the inner cylinder 85a. The outer cylinder 85b is joined to the inner cylinder 85a by a joint 85c formed at the upper end. Further, an inward projection 85d is provided at the lower end of the outer cylinder 85b.
Is formed, and the heat retaining heater 1 housed in the gap G is provided.
7 is held.

The heater 17 is inserted into the gap G by pushing it in from the opening side of the gap G. When the heater 17 is pushed in, the outer cylinder 85b bends outward,
The heat retaining heater 17 is housed in the gap G over the inward projection 85d. After the storage, the bending of the outer cylinder 85b is restored, and the heater 17 is held by the inward projection 85d and does not fall. Therefore, according to the present embodiment, it is not necessary to close the opening with a separate component in order to prevent the heater 17 from dropping, and the heater 1 has a simple structure.
7 can be mounted on the bottom frame 85.

The outer cylinder b is not limited to the bottom frame 85 but may be the upper frame 80 or the outer side of the side frame 11 shown in FIG. By the way, reference numeral 85e denotes a passage hole for pulling out a mold for forming the inward projection 85d. Since the heat of the heater 17 passes through this hole and is quickly transmitted to the upper frame 80, the upper frame 80e is provided. Has the effect of warming up quickly. As shown in FIG. 12, it goes without saying that an electromagnetic induction coil 10e may be used in place of the heater 17 for keeping heat.

Embodiment 7 FIG. FIG. 13 is a sectional view of a main part of another embodiment of the present invention. The storage frame in the present embodiment includes a bottom frame 95 provided in the cooking device main body and configured to store a side portion from the bottom of the pan 15 and a bottom frame 9.
5 and the pan 1 in combination with the bottom frame 95.
5 and an upper frame 90 for storing the upper part from the side. A groove 90 a in which the heat retaining heater 17 can be housed is formed at the lower end of the upper frame 90. Also,
A locking piece 90c that locks with a locking portion of a bottom frame 95 described later is formed at a lower end portion of the outer side wall 90b of the two side walls forming the groove 90a. On the other hand, the bottom frame 95
At the upper end portion, a protruding end 9 fitted into the groove 90a of the upper frame 90 is provided.
5at is formed, and a locking portion 95b for locking the locking piece 90c of the upper frame 90 is formed at the lower end of the protruding end 95a.

Next, assembling of the storage frame and the heater 1 for keeping warmth
7 will be described. First, the upper frame 90 is placed with the groove 90a of the upper frame 90 facing upward, and the groove 90a
In the annular gap G formed by the above, a heat retaining heater 10 or an induction heating coil (not shown), which is a heat source for keeping heat, is housed. Next, the protruding end 95 a of the bottom frame 95 is fitted into the groove 90 a of the upper frame 90. As a result, the heat retaining heater 10 is pushed into the gap G and is reliably housed and held in the gap G. At this time, the locking pieces 90c formed on the upper frame 90 are locked to the locking portions 95b of the bottom frame 95,
The upper frame 90 and the bottom frame 95 are integrated to form a storage frame.

As described above, according to this embodiment, the upper frame 9
0 is inserted into the groove 90a.
By simply fitting the protruding end 95a of the bottom frame 95 into 0a, the attachment of the storage frame and the heater for keeping heat can be extremely easily performed.
Further, although a part of the upper frame 90 is in contact with the outside air and heat is easily dissipated, the bottom of the groove 90 a of the upper frame 90 is
Temperature contact can be prevented from lowering. Furthermore, since the heater for keeping heat is provided in the vicinity of the dew receiving groove 90d provided for recovering the steam generated from the pot 15 during the cooking of rice, the evaporation of the water in the dew receiving groove 90d is promoted. There is also an effect.

Embodiment 8 FIG. FIG. 14 is a sectional view of a main part of another embodiment of the present invention. The storage frame in this embodiment includes a bottom frame 100 that is provided in the cooking device main body and stores the side from the bottom of the pan 15, and a side that is disposed above the bottom frame 100 and stores the side of the pan 15. It is composed of a combination of a frame 103 and an upper frame 105 that is disposed above the side frame 103 and stores the upper portion of the pot 15. At the periphery of the upper end of the bottom frame 100, locking portions 100a as shown in the figure are formed at intervals of, for example, 120 °. In this case, the locking portions 100a are formed at three places. ), The locking portion 100a has an outward flange 100b at the upper end. As a result, the upper end surface of the locking portion 100a has a fixed area, and is configured to be able to mount a part of a heater 17 for keeping heat described later.

The bottom frame 10 on the outer side of the side frame 103
0 at the position corresponding to the locking portion 100a.
a locking piece 103a for locking to the outward flange 100b of FIG.
Are formed at a predetermined distance from the outside of the side frame 103. Therefore, a gap G is formed between the outer portion of the side frame 103 and the locking piece 103a.
In addition, a convex portion 105a that protrudes downward and can be fitted into the gap G is provided on the upper surface portion of the upper frame 105.
An exposure receiving groove 105b that is recessed downward from the upper surface is formed in 5a.

Next, an assembling procedure of the embodiment constructed as described above will be described. First, the side frame 103 is placed upside down on the workbench, and then the heater 17 is inserted into the gap G. After the insertion, the locking portions 100a provided at three places of the bottom frame 100 are arranged in accordance with the positions of the locking pieces of the side frame 103. In this state, the bottom frame 1 is attached to the side frame 103.
00 and lightly press the bottom frame 100. At this time, first, the inclined surface of the locking piece 103a and the outward flange 10
0b comes into contact and spreads outward from the locking piece 103a. further,
When the bottom frame 100 is pressed, the locking piece 103a gets over the outward flange 100b and is locked to the outward flange 100b. Then, as shown in the figure, the heat retaining heater 17 is pressed against the upper surface of the locking portion 100a to be sandwiched in the gap G, and the side frame 103 and the bottom frame 100 are joined. At this time, the heater 17 for heat retention is pressed against the upper surface of the locking portion 100a and bends.
a is given an appropriate elastic force, and the locking portion 10
0a is prevented from being broken.

At this time, the sandwiching state of the heater 17 is as follows.
By lifting the combined side frame 103 and bottom frame 100, the gap G can be seen through from above the side frame 103. If, as a result of visual inspection, a failure in assembling the heat retaining heater 17 is found, the locking piece 103a is pushed and spread in the direction of the arrow to disengage the locking piece 103a from the outward flange 100b, and the side frame is removed. 103 and the bottom frame 100 can be separated, and the heater 17 can be taken out of the gap G and can be reassembled or replaced. After the side frame 103 and the bottom frame 100 are joined, the upper frame 105 and the side frame 103 are joined by inserting the convex portion 105a of the upper frame 105 into the gap G to form a storage frame. At this time, the warming heater comes into contact with the convex portion 105a of the upper frame 105. According to the present embodiment, all the frame portions of the upper frame 105, the side frame 103, and the bottom frame 100 come into contact with the heat retaining heater 17, so that it is possible to prevent the occurrence of temperature unevenness in the storage frame.

Embodiment 9 FIG. FIG. 15 is a sectional view of a main part of another embodiment of the present invention. In the present embodiment, the storage frame is provided in the cooking device main body, and a bottom frame 110 for storing the side portion from the bottom of the pan 15 is disposed above the bottom frame 110 and combined with the bottom frame 110 to form a pan. 15 and an upper frame 115 for storing the upper part from the side. A groove 110a is formed in the upper portion of the bottom frame 110 to accommodate the heater 17 for heat retention, and an upper surface of the upper frame 115 is formed with a groove 115a recessed downward from the upper surface. Receiving groove 115a
Is formed so that it can be fitted into the groove 110a of the bottom frame 110. In addition, the flange portion 15a of the pot 15 stored in the storage frame abuts on the upper frame 115, and the metal inner lid 45 is placed on the flange portion 15a in FIG.
Is the same as

To assemble the storage frame and assemble the heater 17 for heat retention, the bottom frame 110 is placed on a workbench such that the groove 110a is located at the top, and the heater 17 is stored in the groove 110a. Next, the bottom surface 115b of the dew receiving groove 115a of the upper frame 115 is fitted into the groove 110a.
At this time, the bottom surface portion 115b connects the heat retaining heater 17 with the groove portion 110.
a and pressed against the bottom surface.

In this embodiment constructed as described above, when the heat retaining heater 17 generates heat, the heat is generated by the bottom portion 11.
5b and vaporizes the dew accumulated in the dew receiving groove 115a. In addition, this heat is applied to the pot 15 placed on the upper frame 115.
Is quickly transmitted to the metal inner lid 45 through the flange. Therefore, the heated inner lid 45 keeps the food in the pot 15 warm from above. As described above, according to the present embodiment, the heat retaining heater 17 allows the exposure receiving groove 1 to be exposed.
In addition to evaporating the dew accumulated in 15a, a heat retention function replacing the lid heater 39 (see FIG. 1) is achieved. As a result, it is possible to omit the lid heater 39, and it becomes unnecessary to supply power to the lid 2 for the purpose of keeping heat, so that an effect of simplifying electric wiring via the hinge mechanism can be expected.

Embodiment 10 FIG. FIG. 16 is a sectional view of a main part of another embodiment of the present invention. In the present embodiment, the combination of the bottom frame 120 and the side frame 125 is configured such that a part of each side surface of the bottom frame 120 and the upper frame 125 is in surface contact, and the combination of the side frame 125 on the contact surface. A spiral groove 125a having a U-shaped cross section for housing the heater 17 is formed on the inner peripheral surface.
The spiral protruding end 120 that fits into the spiral groove 125a
a is provided.

In this embodiment, the spiral groove 125a functions as a gap G accommodating the heat retaining heater 17. The heat retaining heater 17 is wound around the inner peripheral surface of the side frame 125 for two turns. As a result, the side frame 125 is warmed widely, and the entire storage frame is quickly warmed. Furthermore, if the number of turns of the heat retaining heater 17 wound spirally is increased, the width of the heat radiation surface is widened and the heat retaining power is enhanced. Although the illustration of the upper frame is omitted in FIG. 16, the upper frame and the side frame 125 may be formed integrally.

Embodiment 11 FIG. FIG. 17 is a sectional view of a main part of another embodiment of the present invention. In the figure, 130 is a bottom frame, and 135 is a side frame arranged on the outer surface of the bottom frame 130. A spiral groove 135a having three turns is formed on the inner peripheral surface of the side frame 135, and the groove 135a is formed.
Constitutes a gap G for the heat retaining heater 17. 137 is a heat transfer plate installed on the bottom frame 130 so as to face the heat retaining heater 17. A cutout portion 130a is provided in a portion of the bottom frame 130 where the heat transfer plate is installed. An upper frame 139 has an engagement groove 139a formed on the lower surface thereof, and is engaged with the upper ends of the bottom frame 130 and the side frames 135. At this time, the side wall 13 inside the engagement groove 139a
9b is formed with an outwardly protruding portion 139c at the lower end thereof. This protruding portion 139c engages with an engaging groove 130b formed on the inner peripheral surface of the upper end portion of the bottom frame 130, and the upper frame 139 and the bottom portion are formed. Engagement with the frame 130 is ensured.

In this embodiment, a ring-shaped heat transfer plate made of copper, beryllium, or the like having a high thermal conductivity is used as the heat transfer member 137. To assemble the storage frame in this embodiment, the upper frame 139 is placed upside down, and the spiral groove 1 of the side frame 135 is mounted.
The heat retaining heater 17 is inserted into 35a, and the heat transfer plate 137 is put on the spiral groove 135a. Place the heat transfer plate 137 on the side frame 1
35 and the bottom frame 130 in a sandwich shape.
35 and the upper ends of the bottom frame 130 are pressed from above into the engagement grooves 139a of the upper frame 139 placed upside down.
Then, the projection 139c of the upper frame 139 is engaged with the engagement groove 130a of the bottom frame 13, and the storage frame is assembled.

In this embodiment, when the heat retaining heater 17 generates heat, the pan 15 is rapidly heated through the heat transfer plate 137 having high thermal conductivity. For this reason, the heat transfer speed is significantly increased, energy loss is prevented, and the amount of consumed electricity is reduced, which is useful for households.

Embodiment 12 FIG. FIG. 18 is a sectional view of a main part of another embodiment of the present invention. In the present embodiment, the notch 130 in the eleventh embodiment is used.
A resin molded piece 141 in which a small piece of metal or a heat transfer piece made of powder is mixed is installed at a portion a. According to the present embodiment, the heat transfer speed can be significantly increased further than in the eleventh embodiment, and the power consumption can be further reduced. In FIG. 18, it is needless to say that the efficiency can be further improved by molding the entire storage frame with a resin mixed with heat transfer pieces.

Embodiment 13 FIG. FIG. 19 is a cross-sectional view showing the entirety of the thirteenth embodiment. In FIG. 19, reference numeral 501 denotes a storage frame for storing the pan 15, and an inverted U-shaped section for storing the induction heating coil 151 for heat insulation wound in a plurality of stages on the upper outer side of the storage frame 501.
A letter-shaped gap 503 is formed. Reference numeral 153 denotes a plate-shaped ferrite body, and a plurality of the ferrite bodies are attached to the storage frame 501 at equal intervals by standing walls 504 provided outside the gap 503. Reference numeral 155 denotes a fixing piece formed on the storage cover 21 for fixing the induction heating coil 151 and the ferrite body 153 to the storage frame 501.
A plurality is provided at a position facing 53.

Reference numeral 281 denotes an inner lid made of a magnetic material having a plurality of vapor passage holes 282, for example, a stainless steel material, and is closely mounted on the opening edge 15 of the pan 15. 157 is the inner lid 28
An induction heating coil for heating 1, which is formed in a circle around the knob 300 and is provided inside the outer lid 31. 1
Numeral 59 denotes a ferrite body for absorbing magnetic lines of force generated from the induction heating coil 157.
Is provided in the vicinity of the upper surface.

Next, the assembling operation of the induction heating coil 151 and the ferrite body 153 having the above-described configuration in this embodiment will be described. The storage frame 501 with the gap 503 facing upward is placed on the workbench, the induction heating coil 151 is placed in the gap 503, and the ferrite body 153 is placed in the gap 50.
3 between the outside and the standing wall 504. After that, the storage cover 2 covers the storage frame 501.
1, the fixing piece 155 is attached to the induction heating coil 15.
1 and the ferrite body 11531, and each is fixed at a predetermined position.

As described above, the induction heating coil 15 for keeping heat is used.
1 and the assembly of the ferrite body 153 that absorbs the magnetic lines generated outside the main body among the magnetic lines generated when the induction heating coil 151 is energized can be easily performed simply by inserting the ferrite bodies 153 into the predetermined positions of the storage frame 501, respectively. it can. For this reason, the ferrite body 153 is located near the induction heating coil 151 and reliably absorbs the magnetic lines of force generated toward the outside of the main body. As a result, even if the magnetic body is located near the main body, the magnetic body does not generate heat.

The induction heating coils 23, 151, and 157, which are heat sources for heating the food in the pot 15, are respectively provided on the outer bottom face and the outer face of the pot 15, and in the outer lid 31 adjacent to the lid 281. Since the food is provided, the cooked food can be heated from the entire surface, and a cooker free from uneven heating can be provided. In order to efficiently heat the food, for example,
The amount of heat generated by the induction heating coil 23 provided on the outer bottom surface of the induction heating coil 5 may be larger than those of the other induction heating coils 151 and 157.
Also, the mounting of the induction heating coil 151 and the ferrite body 153 to the storage frame 501 is performed not by using the storage cover 12 but by providing a protrusion on the opening side of the gap 503 in the same manner as described in the sixth embodiment. Is also good.

Embodiment 14 FIG. FIG. 20 is an enlarged sectional view of a main part of the fourteenth embodiment. In the present embodiment, a gap 503 formed in the storage frame 501 is used.
An induction heating coil 151 is wound around the inside, and a plurality of ferrite bodies 153 are respectively housed at equal intervals in contact with the induction heating coil 151 outside the induction heating coil 151.
The lower end of the ferrite body 153 is fixed by the storage cover 21. Therefore, in this embodiment, as in Embodiment 14, assembly can be easily performed, and the ferrite body 153 contacts the induction heating coil 1151,
Since a plurality of magnetic lines are provided at equal intervals, magnetic lines of force generated outward around the main body are surely absorbed by the ferrite body 141, and even when the magnetic body is located near the main body, the magnetic body generates heat. There is no.

Further, since the ferrite body 153 is provided outside the induction heating coil 151, it is useful to prevent the induction heating coil 151 from being deformed by vibration or high heat. Needless to say, the fixing of the induction heating coil 151 or the ferrite body 153 housed in the gap 503 is not limited to the housing cover 21.

[0062]

The present invention is configured as described above and has the following effects.

In the present invention, since the storage holding portion for storing the linear heat source is formed in a two-stage structure with the partition walls, the outer periphery of the storage frame can be heated over a wide range, and the temperature unevenness can be reduced. Occurrence can be prevented.

[0064]

[0065]

[0066]

[Brief description of the drawings]

FIG. 1 is a configuration explanatory diagram of a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part of the first embodiment of the present invention.

FIG. 3 is a perspective view showing a main part of a second embodiment of the present invention.

FIG. 4 is an enlarged sectional view of a main part of a second embodiment of the present invention.

FIG. 5 is a perspective view showing a main part of a third embodiment of the present invention.

FIG. 6 is an enlarged sectional view of a main part of a third embodiment of the present invention.

FIG. 7 is a perspective view showing a main part of a fourth embodiment of the present invention.

FIG. 8 is an enlarged plan view of a main part of a fourth embodiment of the present invention.

FIG. 9 is a perspective view showing a main part of a fifth embodiment of the present invention.

FIG. 10 is an enlarged sectional view of a main part of a fifth embodiment of the present invention.

FIG. 11 is an enlarged sectional view of a main part of a sixth embodiment of the present invention.

FIG. 12 is an enlarged sectional view of a main part of a sixth embodiment of the present invention.

FIG. 13 is an enlarged sectional view of a main part of a seventh embodiment of the present invention.

FIG. 14 is an enlarged sectional view of a main part of an eighth embodiment of the present invention.

FIG. 15 is an enlarged sectional view of a main part of a ninth embodiment of the present invention.

FIG. 16 is an enlarged sectional view of a main part of a tenth embodiment of the present invention.

FIG. 17 is an enlarged sectional view of a main part of an eleventh embodiment of the present invention.

FIG. 18 is an enlarged sectional view of a main part of a twelfth embodiment of the present invention.

FIG. 19 is a sectional view of Embodiment 13 of the present invention.

FIG. 20 is an enlarged sectional view of a main part of a fourteenth embodiment of the present invention.

FIG. 21 is a diagram illustrating a configuration of a conventional cooking device.

FIG. 22 is an enlarged sectional view of a main part of a conventional cooking device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cooker main body, 9 top frame, 13 side frame, 7 storage frame, 13 bottom frame, 15 pan, 17 warming heater, 50
a, 60a, 75a Inner cylinder, 50b, 60b, 75b
Outer cylinder, 50c partition wall, 60B bottom surface, 60e holding wall, 63 passage hole, 85d inward projection, 90a groove,
103a Locking piece, 115a Exposure groove, spiral groove 125
a, 137 heat transfer member, 151 dielectric heating coil, 15
3 Ferrite body.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Koji Fukuda 1728 Koeda, Oaza, Hanazono-cho, Osato-gun, Saitama 1 Inside Mitsubishi Electric Home Equipment Co., Ltd. (72) Toshio Koike 1728 Koeda, Oaza, Hanazono-cho, Osato-gun, Saitama 1 (56) References JP-A-5-261016 (JP, A) JP-A-5-337045 (JP, A) JP-A-6-284962 (JP, A) JP-A-7- 265195 (JP, A) JP-A-61-272012 (JP, A) JP-A-4-319317 (JP, A) JP-A-5-88424 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47J 27/00

Claims (1)

(57) [Claims] 1. A pot is stored in a storage frame formed by combining a plurality of vertically divided frames, and the food in the pan is kept warm by a linear heat source disposed around the storage frame. In the cooking device, a storage portion for storing the heat source body is provided on an outer periphery of any of the plurality of frame members, and a frame combined with the frame provided with the storage portion can be fitted to the storage portion. While forming, the storage portion, a cylindrical body disposed via a gap in which the heat source body can be installed, an inward protrusion formed at a lower end portion of the cylindrical body, and the cylindrical body and the storage frame A cooking device characterized in that a gap between the two is divided in the axial direction into two, and a partition wall is formed to integrate the cylindrical body and the storage frame.