JPH0417816A - electric hot plate - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electric hot plate of the type in which the cooking plate and heating element can be separated.

BACKGROUND OF THE INVENTION In recent years, electric hot plates have become mainstream in which the cooking plate and heating element can be separated and the cooking plate can be washed.

Conventionally, this type of electric hot plate has generally had a configuration as shown in, for example, Japanese Utility Model Application Publication No. 6'2-7949. The configuration will be explained below with reference to FIGS. 5 and 6.

As shown in the figure, the main body 5) includes a temperature regulator 54 which includes a rod-shaped temperature sensing part 52 that senses temperature, and electrical connection terminals 53 arranged on both sides at the same vertical height as this temperature sensing part 52. is installed. And, on the inside of the main body 5),
A cooking board 55 is disposed, and a temperature sensing receiving part 56 and a terminal part (not shown) of a heating element 57 are located in a position directly in front of the cooking board 55 relative to the temperature sensing part 52 and the electrical connection terminal 53.

The temperature sensing portion 56 has a U groove 58 at a position separated by a step from the back surface of the cooking plate 55, and the U groove edges 59 on both sides are closer to the lower end surface of the outer periphery of the temperature sensing portion 52. It is extended to the upper position. Further, a biasing spring 60 was provided below the temperature sensing portion 52 so as to bias the temperature sensing portion 52 upwardly and bring it into contact with the U-groove 58 of the cooking plate 55.

SUMMARY OF THE INVENTION However, in such a conventional electric hot plate, the temperature of the cooking plate 55 is not controlled by the temperature sensor 56 to the temperature controller 5.
The temperature is determined by the temperature supplied to the temperature sensing portion 52 of No. 4, but since that supply is conducted heat from the cooking plate 55, even though the biasing spring 60 is provided, the cooking plate 55 Main body 5) Due to a change in the contact status of the temperature sensing part 52 due to a slight deviation in the setting, the conductive heat changes significantly, and the dispersion of the set temperature becomes large. Furthermore, since the U-groove subside 59 extends to the side of the outer periphery of the temperature sensing section 52, heat is supplied to the temperature sensing section 52 mostly from above the U-groove 58. was. Therefore, the amount of heat supplied to the temperature sensing section 52 was small, resulting in a delay in temperature sensing. moreover,
Heat is supplied from the heating element 57 to the temperature sensing section 52 through the cooking plate 5.
5, the amount of heat supplied to the temperature sensing section 52 is reduced due to heat radiation during that time, resulting in an even greater delay in temperature sensing.

Further, in the shape of the heating element 57, the shape of the heating part is not close to the temperature sensing part 52, and therefore, the shape of the heating element 57 is not close to the temperature sensing part 52.
When food is placed above the temperature sensor 52 of No. 5,
Since only the temperature sensing part 52 is at a low temperature, the heating element 57 is continuously energized, and the portion of the cooking plate 55 on which no food is placed becomes hot, causing the problem of destruction of the fluororesin coating layer on the cooking surface. there were.

Furthermore, the end of the heating element 57 is generally spaced apart from the back surface of the cooking plate 55 in order to ensure an insulating distance from the cooking plate 55, and accordingly, the vertical dimensions of the temperature regulator 54 are In order to make it smaller, the temperature sensing section 52 is also located below.

Therefore, the temperature sensing receiving part 56 of the cooking plate 55 that abuts the temperature sensing part 52 is arranged to have an interior 61 from the cooking plate 55 . For this reason, the heat capacity of the temperature sensing portion 56 becomes large, and the temperature changes with a delay with respect to the temperature change of the entire cooking board 55. Accordingly, the temperature control of the temperature sensing portion 52 also operates with a delay. As a result, appropriate energization control of the heating element 57 could not be obtained.

Further, the position of the cooking plate 55 is controlled by the engagement between the U-groove 58 and the temperature sensing portion 52, and therefore, when engaged, the temperature sensing portion 52 is likely to be subjected to an excessive load. Become. Therefore, if this load is large, the temperature sensing portion 52 may be deformed, causing the set temperature to be incorrect.

The present invention solves the above-mentioned problems, and even if there are variations in the fitting state of the cooking plate with the main body due to the way the cooking plate is set, the temperature of the cooking plate is stabilized by keeping the heat supply to the temperature sensing part constant. The primary objective is to provide an electric hot plate that can be obtained.

The second purpose is to reduce variations in the temperature of the cooking plate by reducing variations in contact between the cooking plate and the temperature sensing portion.

The third object is to eliminate the delay in temperature sensing of the temperature sensing section by supplying heat to the temperature sensing section not only from the cooking plate but also from the end of the heating element.

The fourth purpose is to further eliminate the temperature sensing delay of the temperature sensor by increasing the ambient temperature near the temperature sensor.

The fifth purpose is to prevent the temperature of the cooking plate other than the surface on which the food is placed from increasing even when food is placed on the cooking plate above the temperature sensor, and the fluororesin coating layer on the cooking plate The purpose is to prevent the destruction of

The sixth purpose is to reduce the thickness of the temperature sensing portion on the back side of the cooking plate, which the temperature sensing portion comes into contact with, to reduce its heat capacity, so that the temperature of the cooking plate can be sensed quickly.

The seventh purpose is to provide a safe appliance that does not place an excessive load on the temperature sensor and prevents the set temperature from going awry by regulating the position of the cooking plate outside the temperature sensor. be.

Means for Solving the Problems In order to achieve the above first object, the present invention provides a cooking board;
A heating element placed below the cooking plate and having an end located on the side; a heat shield that holds the heating element and covers the lower part of the heating element; and a heat shield that covers the sides and bottom of the heat shield. The temperature cooker includes a covering body and a rod-shaped temperature sensing portion located below the cooking plate near the end of the heating element, and houses the temperature sensing portion provided on the lower side of the cooking plate. It is constructed by providing a gap between the U-groove and the temperature sensing section. Further, in order to achieve the second object, a protruding rib provided on the inner wall surface of the U groove is arranged in the gap between the U groove and the temperature sensing portion.

Furthermore, in order to achieve the third objective, a support member is arranged at the end of the heating element to be engaged with both ends thereof, and a sensing part guide hole into which the temperature sensing part is inserted is provided in a part of the support member. It has been set up and configured.

Further, in order to achieve the fourth object, a stepped portion is provided in the vicinity of the terminal of the heating element to separate the heating element from the cooking plate.

Furthermore, in order to achieve the fifth objective, the shape of the heating element is made into a double horseshoe shape having an outer heating part and an inner heating part, and the part of the inner heating part near the temperature sensing part is ,
It is configured to have a protruding side close to the temperature sensing section.

Furthermore, in order to achieve the sixth object, the center position of the temperature sensing portion is shifted upward from the center position of the end portion of the heating element.

Furthermore, in order to achieve the seventh objective, both ends of the heating element extend in the same direction with a gap, and the back surface of the cooking plate is provided with protruding cooking plate guide ribs that engage with the gap. This is what I did.

Function The electric hot plate of the present invention has the above-mentioned configuration, and the heat transfer to the temperature sensing part is not due to the contact between the temperature sensing part and the U-groove body, but is by the atmosphere transmission in the gap between them, so that the heat is always stable. The temperature of the cooking plate does not vary even if the state in which the main body of the cooking plate is placed varies.

In addition, the contact between the cooking plate groove and the temperature sensing portion is regulated at a predetermined position by the protruding rib provided on the inner wall of the U groove.
Even if variations occur in the placement of the main body of the cooking board, the temperature sensing portion will not directly contact the U-groove. Therefore, the temperature sensing section can always obtain a stable temperature through atmospheric transfer.

Furthermore, the amount of heat supplied to the temperature sensing section is increased because high temperature heat from the end of the heating element is introduced through the support member in addition to the U-full surrounding air of the cooking plate. There is only a delay in the temperature sensing of the temperature sensor.

Further, since the heating element is separated from the cooking plate by the stepped portion provided near the terminal, the temperature of the heating element near the temperature sensing portion is difficult to be absorbed by the cooking plate and becomes high. Therefore, the atmosphere in the vicinity of the temperature sensing section rises, and the temperature sensing delay of the temperature sensing section is further reduced.

Furthermore, by arranging a heating element with a protruding side close to the temperature sensing part, if food is placed on the cooking plate at the position of the upper force on the temperature sensing part and the temperature sensing part becomes low temperature. However, when electricity is turned on, high-temperature radiant heat is supplied from the heating element, and this radiant heat allows the temperature sensor to detect the energization status of the heating element and control the energization. This will prevent the temperature from rising.

In addition, if the temperature sensing part is placed above the center position of the end of the heating element, the thickness of the bottom of the U-groove of the cooking plate can be reduced and the heat capacity of that part can be reduced, resulting in better cooking. This makes it possible to quickly sense changes in the temperature of the board. Furthermore, both ends of the heating element extend in the same direction with a gap, and cooking plate guide ribs are provided on the back of the cooking plate to engage with the gap, thereby regulating the cooking plate's predetermined position. Since this is done in the gap between the plate guide rib and both ends of the heating element, no unreasonable load is applied to the temperature sensing section, and the set temperature does not deviate.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 4.

In the figure, reference numeral 1 denotes a cooking plate, on the lower surface of which there is a heating element heat absorption rib 3 that accommodates the heating element 2 arranged below, and on the side part of the back surface that accommodates the temperature sensing part 5 of the temperature regulator 4. A U groove 6 for storage is provided.

The heating element 2 is attached to a heat shield plate 7 that covers the lower outer surface of the cooking plate 1, and energization of the heating element 2 is controlled by a temperature regulator 4 that operates by sensing the temperature of the cooking plate 1. The outside of the heat shield plate 7 is covered with a tenon 8 which is an outer shell member, and the side wall of the body 8 is provided with a connector opening hole 9 through which the temperature regulator 4 passes.

The terminal 10 of the electrical connection part of the heating element 2 is also arranged in the connector opening hole 9, and the electric circuit with the temperature regulator 4 is connected at the same time as the tenon 8 of the temperature regulator 4 is set. Therefore, the temperature regulator 4 is a plug-in type having an electrical connection part for the heating element 2 and a rod-shaped temperature sensing part 5.

The U-groove 6 and the temperature sensing part 5 are fitted with a gap 11, and in a part of the gap 11, there are protruding ribs 12 in two places in the U-groove 6 that abut against and position the temperature sensing part 5. It is provided. Therefore, the heat transfer to the temperature sensing section 5 is U
It is transmitted from the cooking plate 1 via the air layer contained in the groove 6. The lower ends of the U-groove tap sides 13 on both sides of the U-groove 6 are
It extends further below the lower end of the outer periphery of the temperature sensing portion 5, and heat transfer to the temperature sensing portion 5 is also affected by radiant heat from below due to the action of the U-groove subside 13.

Reference numeral 14 denotes a support member that is engaged with both ends 16 of the heating element 2, and a temperature sensing section guide hole 15 into which the temperature sensing section 5 is inserted is opened in the center. Therefore, the high-temperature heat of the heating element 2 is transferred to the temperature sensing portion 5 via the support member 14 in addition to the U-groove 6 .

The vicinity of the end 16 of the heating element 2, that is, the vicinity of the temperature sensing part 5, has a stepped part 17 that is separated from the back surface of the cooking plate 1, which reduces heat conduction to the cooking plate 1 and reduces the surrounding atmosphere. is increasing. Furthermore, the heating element 2 has a substantially horseshoe-shaped double shape having an outer heating part 18 that heats the outer side of the cooking plate 1 and an inner heating part 19 that heats the inner side of the cooking plate 1.
A protruding side 20 close to the temperature sensing section 5 is provided in a portion of the inner heating section 19 near the temperature sensing section 5 . Therefore, the temperature of the temperature sensing portion 5 is significantly increased by the radiant heat from the protruding side 20, and in addition to sensing the temperature of the cooking plate 1, it is also possible to sense the energization of the heating element 2.

The vertical positions of the temperature sensing part 5 and the terminal 10 of the heating element 2 are shifted so that the temperature sensing part 5 is on the upper side closer to the cooking plate 1 (Y), and accordingly, the inside of the U groove of the cooking plate 1 2
1, the wall thickness is set to be thin. 22 are both ends 16. of the heating element 2. The tips of the cooking plate guide ribs 22 are formed into a substantially triangular shape so as to be separated from the ends 16 of the heating element 2, and are disposed on both sides of the U-groove 6. be.

Next, the operation of the configuration of this embodiment will be explained.

First, set the cooking plate 1 on the heating element 2, and then
Insert the temperature regulator 4 through the connector opening hole 9 of 8. The temperature sensing part 5 of the temperature regulator 4 passes through the temperature sensing part guide hole 15 of the support member 14 and is located below the U groove 6 of the cooking board 1. At the same time, the terminal 10 of the heating element 2 is also connected to the temperature regulator 4, and a situation is established in which electricity can be applied. When the temperature controller 4 is operated and the heating element 2 is energized, the heating element 2 generates heat and the cooking plate 1 is heated. As the temperature of the cooking plate 1 rises, the temperature sensing part 5 also gradually rises in temperature, and when the set temperature is reached, the current is finally turned off, and then the power is turned on and off at the set temperature repeatedly.

At this time, the present invention utilizes the U groove 6 of the cooking plate 1 and the temperature sensing portion 5.
Since the engagement is performed with the gap 11, heat conduction to the temperature sensing portion 5 is always performed by radiant heat via the air layer. Therefore, there is no cause for variation in conduction heat due to variations in the contact between the U-groove 6 and the temperature sensing portion 5, as in the conventional case, and stable temperature control is possible.

In addition, a protruding rib 1 is provided in the gap between the U groove 6 and the temperature sensing portion 5 ]1.
2, the position of the temperature sensing portion 5 may vary somewhat, and even if the U groove 6 and the temperature sensing portion 5 are about to come into contact, the temperature sensing portion 5 will hit the protruding rib 12 first. In this state, the contact between the protruding rib 12 and the temperature sensing part 5 can be expected to be at the tip of the protruding rib 12 or by a line contact as it is formed with a very thin wall, so that almost no heat is conducted to the temperature sensing part 5. Therefore, the temperature variation in the layer can be reduced. Moreover, the effect of the protruding rib 12 can be achieved even with a small protrusion in terms of preventing heat conduction from the U-groove 6.
The distance gap 11 between the cooking plate 1 and the temperature sensing section 5 can be reduced.

Next, the provision of the support member 14 at the end portion 16 of the heating element 2 will be explained. When the heating element 2 generates heat, the end portion 16 also heats up to, for example, 200°C due to heat conduction from the heating part of the heating element 2.
The temperature will be around. Therefore, the temperature of the support member 14 engaged with this portion also rises due to heat conduction from the end portion 16, and the temperature sensing portion guide hole 15 also becomes high temperature. Temperature sensing part 5
The base part of is inserted into the temperature sensing part guide hole 15, and the temperature sensing part 5 is caused by heat conduction from this inserted part.
It can easily become hot. Therefore, especially when the temperature rises for the first time when the whole body is cold, the temperature sensing part 1 is delayed due to the insufficient supply of heat to the temperature sensing part 5.
There is no rise in temperature, and the rise time to the predetermined temperature is shortened accordingly.

Also, a description will be given of the provision of a stepped portion 17 near the end portion 16 of the heating element 2, which is separated from the back surface of the cooking plate 1. usually,
The heating element 2 is brought into close contact with the cooking plate 1 over the entire surface of the heating element 2 in order to improve heat conduction to the cooking plate 1.

Therefore, heat conduction to the temperature sensing portion 5 is performed by heat conduction from the U-groove 6 of the cooking board 1. However, if we consider the case where the cooking plate 1 becomes larger, even if the central part of the cooking plate 1 becomes high temperature, the temperature near the temperature sensing part 5 does not reach high temperature easily, and the off time when the initial temperature rises is delayed. or occur. This is caused by the uneven temperature distribution of the cooking plate 1, but in the present invention, the heating element 2 is provided with a stepped portion 17.
Since the heating element 2 is placed away from the back surface of the cooking plate 1, the heat of the heating element 2 near the end 16 of the heating element 2, that is, the temperature sensing part 5, is
This will increase the ambient temperature in the vicinity without being affected by the cooking plate 1. Therefore, the temperature of the temperature sensing section 5 rises easily, and temperature control characteristics with no temperature sensing delay can be obtained.

Next, the provision of the protruding side 20 on the inner heating portion 19 of the substantially horseshoe-shaped and double-shaped heating element 2 will be explained.

The temperature sensing portion 5 is heated by two types of heat transfer: radiant heat from the cooking plate 1 and radiant heat from the protruding side 20 of the heating element 2. Therefore, for example, something to be cooked is placed on the temperature sensing part 5 of the cooking plate 1, and as a result, heat is taken away from the temperature sensing part and the temperature becomes low, and the heating element 2 is continuously energized. Even if an attempt is made to do so, the radiant heat from the protruding side 20 of the heating element 2 causes the temperature sensing portion 5 to rise in temperature, and this temperature prevents continuous energization. As a result, the temperature of the cooking board 1, whose heat is not buried by the food other than the cooking food placement surface, does not rise to a high temperature due to the power supply to the heating element 2 being stopped. Therefore, thermal damage to the fluororesin coating layer normally applied to the surface of the cooking plate 1 is significantly reduced, and a long-life cooking plate 1 can be obtained.

Furthermore, it will be explained that the center position of the temperature sensing part 5 is arranged above the cooking plate 1 side from the center position of the end part 16 of the heating element 2.

As mentioned above, the heat transfer path to the temperature sensing section 5 is the cooking plate 1.
It is given from the 6th part of the U groove. Therefore, heat is supplied to the temperature sensor 1 that can quickly respond thermally to the food being cooked by the U-groove 6.
Setting the shape is a major factor, and this factor is determined by the heat capacity of this portion, that is, the thickness of the bottom of the U-groove 6. Therefore, the present invention provides a heating element 1 that has a stepped portion 17 and is separated from the cooking plate 1.
By shifting the position of the temperature sensing portion 5 upward toward the cooking plate 1 side from the terminal 10 position, the plate thickness between the bottom of the U-groove 6 and the surface of the cooking plate 1, that is, the U-groove meat portion 21 can be made thinner. Therefore, the temperature of the food to be cooked quickly passes through the U-groove meat part 21 of the U-groove 6 and is transmitted to the temperature sensing part 5, making it possible to quickly respond to the temperature of the food. be.

Next, the provision of the cooking plate guide rib 22 provided on the back surface of the cooking plate 1 that engages between both ends 16 of the heating element 2 will be explained.

As shown in FIG. 3, the temperature sensing portion 5 and the U-groove 6 need to be engaged at one point on their circumferences. Therefore, the position of engagement is determined and the cooking plate 1 is set.
If the setting is slightly deviated, the U-groove subside 13 will come into contact with the temperature sensing portion 5, and an unreasonable load will be applied. Therefore, the present invention provides a substantially triangular cooking plate guide rib 22 that engages between both ends 16 of the heating element 2, so that when the cooking plate 1 is slightly misaligned, the end 16 of the heating element 2 can be guided. You will be able to place cents in the correct position. For this reason, an unreasonable load is not applied to the temperature sensing section 5, and the set temperature does not deviate.

Effects of the Invention As is clear from the above description of the embodiments, according to the electric hot plate of the present invention, the temperature sensing portion and the portion near the temperature sensing portion (U groove) of the cooking plate are engaged with each other with a gap. Therefore, stable temperature control characteristics can be obtained without variations in heat conduction due to variations in contact conditions.

In addition, a protruding rib is placed in the gap between the temperature sensing part and the U-groove to position and regulate the temperature sensing part, so the temperature sensing part does not always come into contact with the U-groove, and heat transfer is improved. Not only can the temperature be constant and more stable temperature characteristics be obtained, but the height of the protruding ribs can be made small and the vessel body can be made thinner.

Furthermore, since the temperature sensing part is set by penetrating the support member engaged with the end of the heating element, the amount of heat supplied to the temperature sensing part increases from the support member, and this heat causes the temperature sensing It is possible to improve the temperature characteristics by preventing the delay in temperature sensing of the parts and by preventing the initial temperature from rising.

In addition, because a stepped portion is provided near the end of the heating element away from the cooking plate, the temperature of the heating element near the temperature sensing part is difficult to be supplied to the cooking plate, and as a result, the atmosphere near the temperature sensing part rises. Due to this temperature, the temperature sensing portion is further supplied with heat, thereby further eliminating the temperature sensing delay.

Furthermore, the shape of the heating element is approximately a horseshoe shape with an outer heating part and an inner heating part, and a double shape, and the part of the inner heating part near the temperature sensing part has a protruding shape near the temperature sensing part. Because the edges are provided, even if food is placed on the cooking plate above the temperature sensor and the temperature sensor becomes cold, radiant heat will be supplied from the protruding sides by energization, and this radiant heat will It is possible to control the energization by sensing the energization status of the heating element with the temperature sensing portion, and it is possible to prevent the cooking plate other than the surface on which the food is placed from increasing in temperature. As a result, the fluorine resin coating layer of the cooking board will not be destroyed, and its lifespan will be extended.

In addition, by locating the center position of the temperature sensing part upward toward the cooking plate side from the center position of the end of the heating element, the thickness of the bottom of the Ua can be made thinner, so that heat transfer due to changes in the temperature of the cooking plate can be carried out quickly. The information is now transmitted to the sensor, allowing you to quickly control the heating according to the situation of the food being cooked.

Furthermore, since cooking plate guide ribs that engage both ends of the heating element are provided on the back of the cooking plate, the temperature sensing part binding groove can be smoothly set in the correct position, and unreasonable loads are not applied to the temperature sensing part. Therefore, it is possible to reduce deviations in the set temperature.

[Brief explanation of drawings]

FIG. 1 is a side cross-sectional view of the main parts of an electric hot plate according to an embodiment of the present invention, FIG. 2 is a partially cutaway plan view of the electric hot plate, and FIG. A front sectional view of the U-groove, FIG. 4 is a plan sectional view of the vicinity of the support member of the electric hot plate, FIG. 5 is a sectional view of the vicinity of the temperature controller of the conventional electric hot plate, and FIG. 6 is a sectional view of the same electric hot plate. FIG. 2 is an exploded perspective view of the vicinity of the temperature cooker. 1...Cooking board, 2...Heating element, 4...
... Temperature controller, 5 ... Temperature sensing section, 6.
... U groove, 7 ... Heat shield plate, 8 ...
・Body 11... Gap, ・12...
Projecting rib, 14...Supporting member, 15...
・Temperature sensing part guide hole, 16... End, 17...
...Stepped part, 18...Outward heating part, 19...
...Inner heating part, 20...Protruding side, 22.
...Cooking board guide rib. Name of agent Patent attorney Shigetaka Awano 1 person @ 1 figure IJ --- Tato Mitou Ro Ryoshodai 41 2+ -! lnl'! Fii! 't111fu'υediting y ding 砺兇勅d 都% item? Ya divination〕Good (add 1 to the sho logo) ( ・1, Choto station r6 □) 1 each H also ⑋ 1 Bottle 4A knowledge to section internal hole sieve Peen U Mizota Shizuka

Claims (7)

[Claims] (1) A cooking plate, a heating element placed below the cooking plate and having an end located on the side, a heat shield plate that holds the heating element and covers the lower part of the heating element, and this shielding plate. It consists of a body that covers the sides and bottom of the heating plate, and a temperature regulator that has a rod-shaped temperature sensing portion below the cooking plate near the end of the heating element, and the temperature sensing portion is provided on the cooking plate. An electric hot plate formed with a U-groove that is stored with a gap between the outer periphery and the outer periphery. (2) The electric hot plate according to claim (1), wherein a protruding rib is arranged on the inner wall surface of the U groove, and the position of the temperature sensing portion is regulated by the protruding rib. (3) At the end of the heating element, a support member that is engaged with both ends is arranged, and a temperature sensing part guide hole into which the temperature sensing part is inserted is arranged in a part of the support member. Claims (
The electric hot plate described in 1) or (2). (4) The electric hot plate according to any one of claims (1), (2), and (3), further comprising a stepped portion separated from the cooking plate near the end of the heating element. (5) The heating element is approximately horseshoe-shaped and double-shaped, having an outer heating section that heats the outer side of the cooking plate and an inner heating section that heats the inner side, and the inner heating section The portion near the temperature sensing portion of claim (1) has a protruding side near the temperature sensing portion.
The electric hot plate according to any one of 1), (2), (3), and (4). (6) Claims (1) and (2) in which the center position of the temperature sensing part is disposed higher toward the cooking plate than the center position of the end of the heating element.
, (3), (4), and (5). (7) Both ends of the heating element extend in the same direction with a gap between them, and the back surface of the cooking plate has a cooking plate guide rib that protrudes and engages with the gap (1) and (2). , (3), (4), (
The electric hot plate according to any one of 5) and (6).