JP2013042977A - Electric cooking appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric cooking appliance which reduces a noise generated by switching a heating element to an energizing state or non-energizing state in a short time, when the heating temperature of a cooking plate is near a predetermined set temperature and not having such a bad influence as to cause a wrong operation in peripheral electric appliances.SOLUTION: In the electric cooking appliance 1, a thermosensitive rod 68 is disposed between a pair of heating element bases 22 provided in the base of the heating element 20 for supplying heat to the cooking plate 10, and switching takes place in a way that the heating element 20 is put in the energizing state when the temperature sensed by the thermosensitive rod 68 is less than the predetermined set temperature or put in the non-energizing state when the sensed temperature reaches a set temperature Ta, and the cooking appliance includes a thermal capacity increase structure La for increasing the thermal capacity, between the thermosensitive rod 68 and the heating element 20.

Description

  The present invention relates to, for example, an electric cooker such as a hot plate or an electric grilled meat cooker that heats a food to be cooked placed on a cooking plate by transmitting heat generated by a heating element to a cooking plate.

As the above-described electric cooker, for example, a cooker described in Patent Document 1 has been proposed.
The cooker disclosed in Patent Document 1 is arranged integrally with a plate, a back surface of the plate, an annular heating element that supplies heat to the plate, and a plug-in type that is inserted into the plate side and electrically connected to the heating element. It is the structure provided with the thermostat.
Here, the annular portion of the elongated heating element is set as the heating element annular portion, and both end portions in the length direction are set as the heating element base.

  The cooker has a configuration in which a heat receiving rod of the plug-in thermostat is disposed between a pair of heating element bases in a state where the plug-in thermostat is inserted into the insertion port on the plate side.

  In the cooking device disclosed in Patent Document 1, a heat sensitive rod (heat receiving rod) senses the heat generated from the heat generating element, and the heat generating element is energized when the temperature sensed by the heat sensitive bar is lower than a predetermined set temperature ( The cooking plate is kept at a predetermined temperature by switching with the plug-in thermostat to turn off when the temperature reaches the set temperature.

  Regarding a temperature control function provided in such an electric cooker, a general control method that has been conventionally performed is shown using a graph showing the relationship between the thermal temperature and time shown in the partially enlarged view of FIG. More specifically, when the heat-sensitive rod receives the heat generated from the heating element and the heat-sensing temperature reaches a predetermined temperature Ta (point a1), the thermostat turns off the supply of current to the heating element (OFF). The heating element stops heating. As a result, when the heat sensitive temperature that has risen beyond the predetermined set temperature gradually decreases and reaches the predetermined set temperature Ta (point a2), the thermostat resumes the supply of current to the heating element and is in the energized state (ON ) And heating of the heating element is resumed.

  The electric cooker maintains the temperature of the plate at a predetermined set temperature by performing temperature adjustment control for switching between the energized state and the non-energized state of the heating element based on the thermosensitive temperature by a thermostat.

  However, the heating element provided in the conventional electric cooking device includes the heating element provided in the cooking device disclosed in Patent Document 1, for example, as shown in FIG. Since the heating element is composed of a coiled heating wire, the heat generating rod generates heat, so that the heat sensitive rod is directly affected by the heat, and the heat generating part generates heat. Accordingly, the responsiveness (thermal characteristic) of the thermal temperature of the thermal rod accompanying the thermal fluctuation in which the heating element switches between the heat generation state and the non-heat generation state, such as a sudden increase in the thermal temperature of the thermal rod, becomes excessively high.

  Then, as shown in FIG. 10, when the heat sensitive temperature of the heat sensitive rod is in the vicinity of the predetermined set temperature, the number of times the heat sensitive temperature of the heat sensitive rod rises or falls with respect to the predetermined set temperature increases. The cycle of repeating the switching between the energized state and the non-energized state becomes shorter.

  In this way, noise is generated by repeating switching between the energized state and the non-energized state of the heating element in a short time, and when noise is generated from the electric cooker, for example, the radio wave of the mobile phone is disturbed, the surroundings This may cause adverse effects such as malfunction of the electrical equipment existing in the vicinity, such as disturbance of the image and sound of the television installed in the area.

JP 59-135031 A

  Therefore, the present invention prevents noise that occurs when switching the heating element to the energized state or the non-energized state in a short time when the heating temperature of the cooking plate is near a predetermined set temperature. The purpose of the present invention is to provide an electric cooker that does not adversely affect the electrical equipment existing in the factory.

  The present invention includes a cooking plate, an electric cooker body that holds the cooking plate, a heating element that generates heat when energized and supplies heat to the cooking plate, the cooking plate, and the electric cooker body. It is composed of an electrical connection plug that is inserted into an insertion port provided on at least one side, and the heating element is disposed on the lower side of the surface of the cooking plate, and is disposed in the insertion port. A pair of heat generating bases, and in the state where the electrical connection plug is inserted into the insertion port, a connection terminal electrically connected to the tip of the pair of heat generating bases, and the pair of heat generation A heat-sensitive rod arranged between the body bases, and a switching that makes the heating element energized when the temperature sensed by the heat-sensitive rod is lower than a predetermined set temperature, and de-energizes when the set temperature is reached Temperature control unit In configuration was an electric cooker, between the heat-sensitive rod up to the heating element, characterized by comprising a heat capacity increase structure to increase the heat capacity.

  With the above-described configuration, the heat generating element is affected by the heat fluctuation of the heat generating element when the heat generating element changes from the heat generating state (ON) to the non-heat generating state (OFF), or when the heat generating element changes from the non-heat generating state (OFF) to the heat generating state (ON). Since the time until transmission to the heat sensitive bar can be delayed, the switching time of the energization state of the heating element is not shortened, and the occurrence of noise due to repeated switching in a short cycle can be prevented.

  Therefore, the electric cooker can be used without adverse effects such as malfunctions occurring in the electric devices present in the vicinity.

  For example, noise generated from an electric cooker does not disturb the sound of a mobile phone or disturb the image or sound of a TV set in the vicinity, and the electric cooker is used for home use. Not only, but also when using it as a hot pot or yakiniku in restaurants, a portable information terminal with a memory function or a calculation function used when receiving orders from customers due to noise generated from the electric cooker ( It is possible to avoid malfunction of the handy terminal), the sound microphone used by the store clerk to exchange information with another store clerk, and headphones.

  In addition, it is possible to extend the life of the contacts of the temperature control unit by increasing the interval at which the heating element is switched ON and OFF and reducing the number of switching. In addition, since the heating element can be repeatedly turned on and off in a short cycle to prevent the heating element from being loaded, the life of the heating element can be prolonged and the power consumption of the heating element Can be reduced.

  Examples of the heat capacity increasing structure include a structure in which a substance having a larger heat capacity than that of air or a material of the cooking plate is interposed between the heat sensitive rod and the heating element.

  Furthermore, in the heat capacity increasing structure, in order to lengthen a heat transfer path, a material having low heat conductivity such as a heat resistant resin is interposed between the heat sensitive rod and the heating element. It is possible to delay the time until the heat generated by the heating element is transmitted to the thermal rod by increasing the heat capacity from the thermal rod to the heating element. If it is a structure, it will not specifically limit.

As an aspect of the present invention, the heating element is composed of a heating part and a non-heating part,
The heat generating portion is configured in at least a part of the heat generating body main body in the heat generating body, and the non-heat generating portion is configured in at least a part of the pair of heat generating body bases in the heat generating body, and the heat capacity The increasing structure may be a structure in which the heat generating portion is disposed at a position spaced at least a predetermined distance from the heat sensitive rod.

  As described above, the heat capacity increasing structure is a structure in which the heat generating portion is disposed at a position spaced at least a predetermined distance from the heat sensitive rod, so that the heat capacity can be increased with a simple and easy structure, and noise. Can be prevented.

  Here, the non-invention part does not mean that it does not include anything that generates heat, but includes not only the case where the amount of heat generation is zero, but also the one that generates heat even in a range that does not affect.

  As an aspect of the present invention, the heating element is formed in a long shape, and both end portions in the length direction of the heating element are constituted by the pair of heating element bases, and the pair of heating elements in the length direction of the heating element. The portion between the bases of the heating element is constituted by the heating element body, the heating element is provided with a heating wire along the length direction of the heating element, and the heating part is a coiled portion of the heating wire. A heating wire coil portion may be formed, and the non-heating portion may be formed of a heating wire non-coil portion that is a linear portion along the length direction of the heating element in the heating wire.

  In this manner, the heat generating portion and the non-heat generating portion can be easily configured by forming the heat generating portion by the heating wire coil portion and forming the non-heating portion by a heating wire non-coil portion.

  Further, as an aspect of the present invention, the heating element main body is formed in an annular shape, the pair of heating element bases, and the heat sensitive rod are arranged in parallel to each other along the insertion direction to the insertion port, and the heat generation A pair of wide side portions arranged on the body main body so as to face each other in parallel with the heating element base, on each side spaced apart from the gap between the pair of heating element bases, the heating element base, and the A connecting side portion that connects the wide side portion, and a boundary portion between the non-heat generating portion and the heat generating portion in the longitudinal direction of the heating element can be disposed on the connecting side portion.

  Thus, by arranging the boundary portion on the connection side portion, for example, the boundary portion is located at any position on the connection side portion as compared with the case of changing the arrangement position of the boundary portion on the wide side portion. Depending on whether to arrange, the influence of the thermal fluctuation which a heat sensitive rod receives from a heating wire coil part can be changed effectively.

  Therefore, it is possible to obtain the excellent heating performance of the plate when the heating element heats the plate, and from the viewpoint of preventing noise generation due to switching of the heating element ON and OFF, the heating part and the non-heating The boundary part with the part can be set appropriately and easily.

  Moreover, as an aspect of the present invention, the cooking plate is formed by being divided into a food heating region and a food heat retaining region having a heating temperature lower than the food heating region, and the heat generating portion is disposed in the food heating region. It can set to the area | region containing a part, and the said foodstuff heat insulation area | region can be set to the area | region containing the part which has arrange | positioned the said non-heat-generating part.

  According to the above configuration, because of noise generated when the heating element is repeatedly switched between ON and OFF in a short time, the heating element is separated at least by the predetermined distance between the thermal bar and the heating part. By forming the heat generating portion and the non-heat generating portion along the length direction, in the cooking plate, an area including a non-heat generating portion that does not supply heat to the cooking plate can be effectively used as the food heat insulating region. it can.

  The food is kept at an appropriate temperature by the heat transmitted from the food heating area to the food warming area by placing it in the food warming area until the food heated in the food heating area is eaten. be able to.

  Further, as an aspect of the present invention, the heating element can be integrally formed in contact with the cooking plate.

According to the above-described configuration, since the heating element is integrally configured in contact with the cooking plate, for example, an air layer is not interposed between the heating element and the cooking plate. By supplying heat directly to the cooking plate, excellent heating performance can be obtained.
Therefore, it is suitable for, for example, an electric cooker such as an electric roasting machine, which requires particularly high heating performance.

  However, when the heat transfer characteristic from the heating element to the cooking plate is improved in this way, the heat-sensitive rod is more susceptible to fluctuations in the temperature of the heating element when the heating element is turned on and off, so noise is particularly generated. However, according to the configuration of the present invention, as described above, since the heat capacity increasing structure for increasing the heat capacity is provided from the heat-sensitive rod to the heating element, such heating performance is achieved. Generation of noise can be reliably prevented even with an excellent configuration.

  According to this invention, when the heating temperature of the cooking plate is close to a predetermined set temperature, the noise that occurs when switching the heating element to the energized state or the non-energized state in a short time is prevented, It is possible to provide an electric cooker that does not have an adverse effect such as malfunction in an electric device existing in the vicinity.

The external view of the electric yakiniku device of this embodiment. The structure explanatory view of the electric yakiniku of this embodiment. The structure explanatory view of the electric yakiniku of this embodiment. Explanatory drawing explaining the arrangement | positioning relationship between a cooking plate and a heat generating body. Structure explanatory drawing which showed a part of electric grilling machine of this embodiment in the cross section. Action | operation explanatory drawing of the electric yakiniku of this embodiment. The graph which shows the time-dependent change of the heat sensitive temperature of the heat sensitive bar of the electric yakiniku of this embodiment. The graph which shows the time-dependent change of the thermal temperature of the thermal stick of the electric yakiniku of other embodiment. Action | operation explanatory drawing of the conventional electric yakiniku. The graph which shows the time-dependent change of the heat sensitive temperature of the heat sensitive stick of the conventional electric yakiniku.

An embodiment of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 to 5, the electric yakiniku 1 in the present embodiment generates heat when energized by the cooking plate 10, the electric yakinki main body 50 that holds the cooking plate 10, and heats the cooking plate 10. The heating element 20 for supplying the electric power and the plug 60 for electrical connection inserted into the socket 40 provided in the cooking plate 10 are configured.

  1 shows an external view of the electric grill 1 according to this embodiment, and FIG. 2 shows an external view of the electric grill 1 with the cooking plate 10 and the electric grill main body 50 separated from each other. 3 (a) is a configuration explanatory view showing the arrangement relationship between the heating element 20 and a thermal rod 68 described later when the electrical connection plug 60 is inserted into the socket 40, and FIG. (A) The enlarged view of X part, Y part, and Z part is shown. FIG. 4 is a plan view showing the positional relationship between the cooking plate 10 and the heating element 20, showing the cooking plate 10 with phantom lines, partially showing the heating element 20 in a broken view, and enlarging a part thereof. Show. FIG. 5 is a vertical cross-sectional view of the peripheral portion of the socket 40 of the electric roasting apparatus 1, showing a part of the heating element 20 in a cutaway manner, and the internal structure of the electric roasting apparatus main body 50. Is omitted.

As shown in FIGS. 3 and 5, the heating element 20 includes a heating element body 21 disposed on the lower side of the cooking plate 10 and a pair of heating element bases 22 disposed on the socket 40. Yes. When the electrical connection plug 60 is inserted into the socket 40, the female terminal 67 electrically connected to the male terminal 36 on the distal end side of the pair of heating element bases 22, and the pair of heating element bases 22. A heat-sensitive rod 68 disposed between the heat-generating member 20 and the heat-generating body 20 when the temperature sensed by the heat-sensitive rod 68 is lower than a predetermined set temperature Ta. The rotary temperature control lever 65 and the temperature control circuit unit 66 that perform the switching are configured.
Further, the electric grill 1 has a structure in which the heat generating portion of the heating element 20 is arranged at a position spaced apart from the heat sensitive rod 68 by at least a distance L longer than the predetermined distance La.

Hereinafter, the configuration of the electric yakiniku 1 will be described in detail. The electric yakiniku 1 is composed of a cooking plate 10, an electric yakiniku main body 50 that holds the cooking plate 10 above, an electrical connection plug 60, and a tray 70.
The electric grill 1 is formed in a substantially rectangular shape in plan view, and the short direction is set in the X direction and the long direction is set in the Y direction. Moreover, the side which has the socket 40 of the electric roasting machine main body 50 in the Y direction is set in the Y1 direction, and the side opposite to the side having the socket 40 is set in the Y2 direction.

The cooking plate 10 includes a plate body 11, a heating element 20, and a socket 40.
The socket 40 is formed of a heat resistant resin material in a cylindrical shape as an insertion port that allows insertion of the electrical connection plug 60 and is attached to the end of the cooking plate 10 in the Y1 direction.

  The plate body 11 is formed of a plate-like food material placement surface 11a having a substantially rectangular shape in plan view, and a peripheral wall portion 11b protruding upward from the outer peripheral edge of the food material placement surface 11a. The plate body 11 is integrated with the food material mounting surface 11a.

Specifically, the heating element main body 21 is embedded in the lower portion of the plate main body 11. As a result, the outer peripheral surface of the heating element body 21 is in contact with the surface of the plate body 11.
In addition, the heat generating body base part 22 mentioned later in the heat generating body 20 is arrange | positioned in the state exposed without being cast in the inside of the foodstuff mounting surface 11a.

  The cooking plate 10 is divided into a food heating region 12H and a food heat retaining region 12K having a heating temperature lower than that of the food heating region 12H. The food heating area 12H is provided at the center portion in the Y direction when the food placement surface 11a is viewed in plan, and the food heat retention area 12K is on each side with respect to the food heating area 12H in the Y direction of the food placement surface 11a. I have. A convex partition 15 that is convex with respect to the food material placement surface 11a is formed along the X direction at the boundary between the food material heating region 12H and the food material heat retaining region 12K.

  In the food heating area 12H of the food material placement surface 11a, a plurality of convex portions 16 are arranged at predetermined intervals along the Y direction. The convex part 16 is formed in a projecting shape along the X direction at a height lower than that of the convex partition part 15.

  By disposing the plurality of convex portions 16 at predetermined intervals, the foodstuff can be placed on the foodstuff placement surface 11a so as to straddle the plurality of convex portions 16, and thereby, the excess from the foodstuff can be placed. It is possible to bake the ingredients without sticking them by pouring fresh meat juice, fat, moisture, etc. into the grooves between the convex portions 16 in the ingredient placing surface 11a.

  In addition, a water injection opening 13 for water injection is formed in one of the four rectangular corners of the food heating region 12H. Thereby, when replenishing water to the saucer 70 arranged on the lower side of the cooking plate 10, the cooking plate 10 can be moved from the upper side of the food placement surface 11 a to the cooking plate 10 through the water injection opening 13 without lifting the cooking plate 10. On the other hand, water can be poured into the tray 70. Further, by visually recognizing the space below the tray 70 through the water injection opening 13, the amount of water stored in the tray 70 can be confirmed at a glance.

  In the food material heating surface 12H of the food material placing surface 11a, a communication hole row 14L is configured by a plurality of communication holes 14 arranged along the Y direction on both sides in the X direction and in the intermediate part. The communication hole row 14L includes a both-side communication hole row 14La provided at both side portions in the X direction and an intermediate communication hole row 14Lb provided at an intermediate portion in the X direction. The communication hole 14 communicates in the thickness direction of the plate body 11 between the plurality of convex portions 16 of the food material placement surface 11a, and is formed in a long hole shape that is long in the X direction.

  As shown in FIGS. 3 and 4, the heating element 20 is formed in a long shape and has a pair of heating element bases 22 at both ends in the length direction, and between the pair of heating element bases 22. It is comprised with the heat generating body main body 21 which has in a part.

  Specifically, the pair of heating element bases 22 are formed so as to protrude from the heating element body 21 in the Y1 direction so as to be arranged in parallel with each other along the insertion direction Y2 into the socket 40.

  The heating element body 21 is long in the Y direction with respect to the length in the X direction, and is formed in a substantially rectangular shape in plan view with four corners having an R shape, and has a wide side portion 25 and a connecting side portion 23. It is composed integrally with.

  The pair of wide side portions 25 are opposed to each other in parallel with the heating element base portion 22 arranged along the Y direction on each side in the X direction with a larger interval than the interval between the pair of heating element base portions 22. It is arranged.

  The connecting side portion 23 is provided on the Y2 direction side in the Y direction, specifically, the distal end side connecting side portion 23T on the opposite side to the heating element base 22 side, and the Y1 direction side in the Y direction, that is, the heating element base portion 22. It is comprised with the base side connection side part 23R which has in the side. The distal end side connecting side portion 23T is a connecting portion that connects the wide side portions 25 to each other, and the base side connecting side portion 23R includes the heating element base portion 22 and the wide side portion 25 as shown in FIG. It is the connection part which connects and. The base side connecting side portion 23R has a shape in which an R shape portion 27a connected to the wide side portion 25 side and an R shape portion 27b connected to the heating element base 22 side are connected by an inflection point. It is a part to include. Here, the inflection point is set as the intermediate inflection point 24.

  As shown in FIG. 4, the heating element body 21 described above is over the communication hole 14 in the surface direction constituting the food material placement surface 11a, that is, in the X direction and the Y direction, over the entire length in the length direction. It is arranged at a position where it does not wrap. Thereby, it is avoided that the gravy etc. dripped through the communicating hole 14 falls to the heating element main body 21 to generate smoke or damage the heating element main body 21.

  Specifically, the pair of wide side portions 25 are disposed between the above-described center side communication hole row 14Lb and both side communication hole rows 14La in the food heating region 12H, and the distal end side connection side portion 23T and the base side connection side. The part 23R is disposed on each side in the Y direction with respect to the central communication hole row 14Lb in the food heating region 12H.

  The heating element 20 has a structure in which the heating wire 32 is inserted inside the metal tube 31 and is filled with an insulating powder such as magnesia. Further, rod-like terminals 33 are provided at both ends of the heating wire 32. The opening 33 (not shown) at both ends of the metal tube 31 is sealed by the sealing material 34 in a form in which the tip of the terminal 33 protrudes to the outside of the metal tube 31 and the terminal 33 is made of metal. This is a structure that holds the tube 31 in communication with the inside and outside. In addition, an electrical connection portion 36 is configured at the distal end portion of the terminal 33.

  As shown in the enlarged view of part X in FIG. 3B, the heating wire 32 has a heating wire coil part 32a that is a coil-like part as a heat generating part, and as shown in the enlarged view of part Y in FIG. The non-heat generating portion is formed of a heating wire non-coiled portion 32b that is a linear portion along the length direction of the heating element 20, and the length of the heating element 20 as shown in the Z-part enlarged view of FIG. In the direction, the boundary portion 35 between the heating wire coil portion 32a and the heating wire non-coil portion 32b is arranged in the base side connecting side portion 23R.

  Thereby, the thermal rod 68 and the heating element 20 are arranged in a relative positional relationship in which the distance between them is equal to the predetermined distance La or a distance L longer than the predetermined distance La is secured.

  That is, the shortest distance L between the heat-sensitive rod 68 and the heating element 20 is between the tip of the heat-sensitive rod 68 and the boundary portion 35 between the heating element 20 and the non-heating element 20, as shown in FIG. The linear distance L is equal to or greater than the predetermined distance La.

  In other words, in the relative arrangement relationship between the heat-sensitive rod 68 and the heating element 20 described above, the boundary portion 35 is at least a position that does not overlap with the heat-sensitive rod 68 in the Y direction, that is, at least Y2 from the tip of the heat-sensitive rod 68. It arrange | positions so that it may be located in the direction side.

  Here, the predetermined distance La is a distance from the heating element 20 to the heat-sensitive rod 68, and a switching time in which noise is not generated when the heating state of the heating element 20 is switched between ON and OFF. In order to ensure, it is the minimum distance which can delay the heat transfer time until the heat | fever generated from the heat generating body 20 is transmitted to the said heat-sensitive rod 68. FIG.

  In other words, the predetermined distance La is the heat generated by the heat-sensitive rod 68 from the heat generated by the heating wire coil portion 32a of the heating element 20, and accordingly, the heat generated by the temperature adjusting circuit 66 near the predetermined set temperature Ta. This is the minimum distance at which the thermal rod 68 is not affected by the thermal fluctuation in which the temperature fluctuation of the thermal temperature accompanying switching between the energized state and the non-energized state of the body 20 is equal to or higher than the frequency corresponding to the noise frequency.

  As shown in FIGS. 1 and 3, the electrical connection plug 60 includes a plug body 61, a plug tip 62 inserted into the socket 40, and a power cord connection on the opposite side of the plug tip 62. It consists of the part 63.

  A power cord 64 is led out to the power cord connecting portion 63, and a power plug (not shown) is provided on the other end side in the length direction of the power cord 64.

  The plug body 61 switches the power ON and OFF, and sets the temperature when the power is ON, a rotary temperature adjustment lever 65 that sets the temperature, and the set temperature Ta adjusted by the rotary temperature adjustment lever 65 to the cooking plate 10 and a temperature adjustment circuit unit 66 for adjusting the heating temperature.

  The plug tip 62 is inserted between the female terminal 67 electrically connected to the male terminal 36 provided at the tip of the pair of heating element bases 22 and the pair of heating element bases 22 in the state of being inserted into the socket 40. The heat-sensitive rod 68 to be arranged is constituted. The heat-sensitive rod 68 is formed in a projecting shape from an intermediate portion between the pair of female terminals 67 in the X direction at the plug tip portion 62.

  The temperature adjustment circuit unit 66 switches the heating element 20 to an energized state when the temperature sensed by the heat-sensitive rod 68 is lower than a predetermined set temperature Ta, and switches to a non-energized state when the set temperature Ta is reached. Do.

  Finally, the electric grilled meat body 50 will be described. As shown in FIGS. 2 and 5, the electric roasting device main body 50 is a shallow box whose upper surface is opened by a heat-resistant resin with a rectangular bottom surface portion 51 and a peripheral wall portion 52 rising from the outer periphery. A concave tray mounting portion 53 is formed in the mold, and is set in the center of the bottom surface portion 51 in a state where the tray 70 is mounted.

  At the four corners on the outer peripheral side of the tray mounting portion 53, a support base 54 that protrudes upward to support the cooking plate 10 is erected. In addition, a socket insertion port 55 that is open to allow insertion of the socket 40 is formed in the peripheral wall portion 11b on the Y1 direction side of the electric roasting device main body 50.

  The cooking plate 10 is inserted into the socket insertion port 55 in a state where the cooking plate 10 is disposed on the upper surface of the electric grilling machine main body 50, and is projected to the outside of the electric grilling machine main body 50. Can be removably mounted.

  The saucer 70 is made of metal, and is a shallow tray-type container having an upper surface opened by a bottom surface portion 71 having a rectangular shape in plan view and a peripheral wall portion 72 rising from the outer periphery, and the saucer 70 is accommodated in the electric roasting device main body 50. It can be placed on the placement portion 53. Since the bottom surface of the electric roasting device main body 50 receives radiant heat (radiant heat) from the heating element 20, the electric roasting device main body is provided by interposing a tray 70 between the bottom surface of the electric roasting device main body 50 and the heating element 20. The bottom surface of 50 is protected from radiant heat from the heating element 20.

  The electric roasting apparatus 1 having the above-described configuration can adjust the temperature so as to maintain the predetermined set temperature Ta adjusted by the temperature adjusting lever 65 as follows, and can cook the food with desired baking. it can.

  Specifically, first, in a state where a power plug (not shown) is inserted into a power outlet, the power is turned from OFF to ON while rotating the rotary temperature adjusting lever 65 to adjust to a predetermined temperature Ta. When the contact point for energization provided in the electrical connection plug 60 is closed, the energization state (ON) is established, and current is supplied to the heating element 20. As a result, the heating element 20 generates heat, and the generated heat is supplied to the cooking plate 10 and transmitted to the heat sensitive bar 68.

  When it is detected that the heat sensitive rod 68 has reached the predetermined temperature Ta, the temperature adjustment circuit unit 66 opens the energizing contact provided in the electrical connection plug 60 to make the non-energized state (OFF), and the heating element 20 Stop fever.

  As a result, when the temperature of the heat-sensitive rod 68 decreases from a state where it exceeds the predetermined temperature Ta and reaches the predetermined temperature Ta, the temperature adjustment circuit unit 66 is again energized (ON) by closing the contact. And the heat generation of the heating element 20 is resumed.

  The electric roasting device 1 can cook the food under a predetermined temperature Ta by switching the energization state of the heating element 20 between ON and OFF.

  In the electric grill 1 according to the present embodiment, when the heating temperature of the cooking plate 10 reaches a predetermined set temperature Ta, the heating element 20 is switched to an energized state (ON) or a non-energized state (OFF). Since noise generated by performing in a short time can be prevented, it is possible to provide the electric roasting apparatus 1 that does not have an adverse effect such as malfunction in an electric device existing in the vicinity.

This point will be further described in detail with reference to FIGS. 6, 7, 9, and 10. FIG.
6 shows the arrangement relationship between the heating element 20 and the heat-sensitive rod 68 of the electric grill 1 according to this embodiment, and shows how heat generated by the heating wire coil portion 32a is transferred to the heat-sensitive rod 68. It is operation | movement explanatory drawing of the electric grilling machine 1 of embodiment.

  FIG. 7 is a graph showing the relationship between the heat sensitive temperature and the time in the heat sensitive rod 68 in the case of the electric grill 1 according to the present embodiment, and the state where the heat sensitive temperature is maintained near the predetermined set temperature Ta by temperature adjustment. It is a graph which shows. A waveform G1 shown by a solid line in FIG. 7 shows a state of temperature adjustment of the electric grill 1 according to this embodiment, and a waveform G100 shown by a broken line in FIG. Show the state.

  FIG. 9 shows the positional relationship between the heating element 200 and the heat-sensitive rod 68 of the conventional electric roasting apparatus 100, and the heat generated by the heating wire coil portion 320 a provided near the heat-sensitive rod 68 is transmitted to the heat-sensitive rod 68. It is operation | movement explanatory drawing of the conventional electric yakiniku apparatus 100 which shows a mode.

  FIG. 10 is a graph showing the relationship between the heat sensitive temperature and time of the heat sensitive bar 68 in the case of the conventional electric roasting apparatus 100, and shows how the heat sensitive temperature is maintained near the predetermined set temperature Ta by temperature adjustment. It is a graph.

  6 and 9, the arrow indicated by the symbol h schematically shows how heat is transferred from the heating wire coil portion 32a to the heat sensitive rod 68.

  First, in the case of the conventional electric roasting apparatus 100, as shown in FIG. That is, the heat-sensitive rod 68 and the heating wire coil portion 320a are arranged in a relative positional relationship with an interval Lc shorter than the predetermined interval La.

According to such a configuration, heat h generated by heating of the heating wire coil portion 320a is directly transmitted to the heat sensitive rod 68. Therefore, as shown in the waveform G100 shown in the graph of FIG. The heat sensitive temperature rises rapidly.
On the other hand, when the heat sensitive temperature of the heat sensitive rod 68 reaches a predetermined temperature Ta (point a1), this is detected by the temperature adjustment circuit unit 66, the energization to the heat generating element 20 is switched off, and the heat generation of the heat generating element 20 is reduced. Stop. When the heat sensitive temperature exceeding the predetermined temperature Ta decreases again until reaching the predetermined temperature Ta (point a2), this is detected by the temperature adjustment circuit unit 66, the energization to the heating element 20 is switched ON, and the heating element 20 is turned on. Fever. Then, since the heat sensitive rod 68 directly receives the heat generated by the heat generating element 20, the heat sensitive temperature rapidly rises and again rises to the predetermined temperature Ta (point a3).

  By repeating such temperature adjustment, in the vicinity of the predetermined temperature Ta, the heat sensitive rod 68 is directly affected by the heat fluctuation generated from the heating element 20, and accordingly, the heating element 20 is turned on. Since switching to OFF is performed in a short time, noise is generated, which is a factor that adversely affects peripheral electrical devices.

  On the other hand, as shown in FIG. 6, the electric meat roaster 1 of the present embodiment has a structure in which the heating wire coil portion 32 a is arranged at a position separated from the heat-sensitive bar 68 by at least a distance L longer than the predetermined distance La. Therefore, the time until the heat generation state of the heat generating element 20 changes from ON to OFF or the influence of the heat fluctuation of the heat generating element 20 due to turning from OFF to ON is transmitted to the heat sensitive rod 68 can be delayed.

  When the heat sensitive temperature of the heat sensitive rod 68 is in the vicinity of a predetermined set temperature Ta, the temperature adjusting circuit 66 detects that the heat sensitive temperature has reached the predetermined temperature Ta when the heat sensitive temperature rises. When the temperature control circuit 66 detects that the temperature reaches a predetermined temperature Ta when the heat sensitive temperature is lowered after the heat generation state of 20 is turned off, switching to turn on is performed.

  At this time, since it is possible to delay the time until the heat fluctuation accompanying the change in the heat generation state of the heat generating element 20 is transmitted to the heat sensitive rod 68, as shown in the waveform G1 of the graph in FIG. The switching time between the energized state from ON to OFF or from OFF to ON is not shortened as in the waveform G100, and the occurrence of noise due to repeated switching in a short cycle can be prevented.

  Therefore, the electric grill 1 can be used without adverse effects such as malfunctions occurring in electrical equipment existing in the vicinity.

  For example, noise generated from the electric roasting device 1 does not disturb the sound of the mobile phone or disturb the image or sound of the TV installed in the vicinity. Also, the electric roasting device 1 is for home use. Not only using it, but also when using it as a hot pot or yakiniku in restaurants, portable information with memory function or calculation function used when receiving orders from customers due to noise generated from the electric roasting machine 1 It is possible to avoid malfunctions in terminals (handy terminals), voice microphones and headphones used by store staff to exchange information with other store staff.

  Further, when the heating element 20 repeats ON and OFF in a short cycle, the number of times of switching between ON and OFF is reduced, so that the life of the contacts of the temperature adjustment circuit unit 66 can be prolonged.

  In addition, since it is possible to prevent a load from being applied to the heating wire 32 of the heating element 20, the life of the heating wire 32 can be extended and the heating element 20 can be repeatedly turned on and off in a short cycle. By preventing this, the power consumption of the heating element 20 can be reduced.

  Moreover, the electric grill 1 according to the present embodiment has a simple and easy structure in which the heating wire coil portion 32a is disposed at a position spaced apart from the heat sensitive rod 68 by at least a distance L longer than a predetermined distance La, and a heating element. The heat capacity between the heat sensitive bar 20 and the heat sensitive bar 68 can be increased, and the generation of noise can be prevented.

  Specifically, by separating a part of the heating element 20 from the heat-sensitive rod 68 by at least the predetermined distance La, the heat generated by the heating element 20 compared with the case where the heating element 20 is disposed at a distance Lc shorter than the predetermined distance La is generated. The time to reach the heat sensitive bar 68 can be delayed.

  Thereby, the time until the influence of the heat fluctuation of the heating element 20 due to the heating element 20 changing from ON to OFF or from OFF to ON being transmitted to the thermal bar 68 can be delayed.

  For this reason, even if the heat fluctuation of the heating element 20 fluctuates in a short cycle, it is possible to prevent the heat sensitive temperature at which the heat-sensitive rod 68 is sensitive to fluctuate in a short cycle in conjunction with the short cycle fluctuation. Can do.

  As a result, the heating element 20 is switched between ON and OFF based on the thermal temperature. At this time, the heating element 20 is turned ON and OFF in a short cycle by preventing the thermal temperature from changing in a short cycle. Can be prevented, and as a result, noise can be prevented from being generated from the electric grill 1.

  Further, as described above, the heating element 20 is formed by the heating wire coil portion 32a, and the non-heating portion is formed by the heating wire non-coil portion 32b. And can be easily configured.

  Further, by forming the non-heat generating portion by the heating wire non-coil portion 32b, the heating wire non-coil portion 32b leads the electrical connection between the electrical connection portion 36 of the electrical connection plug 60 and the heating wire coil portion 32a. Since it functions as a wire, it is not necessary to separately provide a member for supplying a current to the heat generating portion, and the configuration can be simplified as a whole.

  In addition, as described above, the heating element 20 has a configuration in which the boundary portion 35 between the heating wire coil portion 32a and the heating wire non-coil portion 32b is arranged in the connecting side portion 23 in the length direction of the heating member 20. The heating wire coil portion 32a and the heating wire non-heated so as to satisfy both of the above-described requirements that the heating performance of the cooking plate 10 due to the heat generation of the heating plate 20 can be obtained and that the noise generation associated with the ON / OFF switching of the heating element 20 is prevented. The boundary part 35 with the coil part 32b can be set appropriately and easily.

  Specifically, when the heating wire coil portion 32a is long in the lengthwise direction of the heating element 20, the heating wire coil portion 32a generates heat, so that the amount of heat supplied from the heating element 20 to the cooking plate 10 increases. The heating performance for heating the plate 10 can be improved.

  However, on the other hand, when the heating wire coil portion 32a becomes longer, the distance between the heating rod 68 and the heating wire coil portion 32a tends to be shorter than the predetermined distance La. Therefore, the heating rod 68 has the heating wire coil portion 32a. The problem that it becomes easy to receive to the influence by the heat fluctuation of the heat | fever emitted from is produced.

  On the other hand, when the length of the heating wire coil portion 32a is short, the distance between the heat sensitive rod 68 and the heat generating portion is easily separated by a distance equal to or greater than the predetermined distance La. However, on the other hand, if the length of the heating wire coil portion 32a is shortened, there arises a problem that the heating performance for heating the cooking plate 10 is lowered.

  Considering the problem of the balance between the lengths of the heating wire coil portion 32a and the heating wire non-coil portion 32b, the heating wire coil portion 32a and the heating wire non-coil portion 32b are arranged in the length direction of the heating element 20. It is important to arrange the boundary portion 35 appropriately.

  Here, in the heating element 20 having the above-described configuration, the pair of heating element bases 22 and the pair of wide side parts 25 are arranged in parallel with the heat-sensitive rod 68 along the Y direction, while the connection is made. The side portion 23 has a configuration in which the side portion 23 is disposed along the direction including the orthogonal direction (X direction) component with respect to the heat-sensitive rod 68.

  For this reason, since the distance between the heat-sensitive rod 68 and the heating element 20 can be effectively changed depending on where the boundary portion 35 is arranged in the connecting side portion 23, the boundary portion 35 is The distance L between the heat-sensitive rod 68 and the heating element 20 is easily and appropriately set at a position separated by at least a predetermined distance La according to which arrangement position the connection side portion 23 is arranged. can do.

  And since the heat generating body main body 21 can be formed by the heating wire coil part 32a over the whole length direction, sufficient heating performance of the cooking plate 10 can be ensured.

  Therefore, by arranging the boundary portion 35 between the heating wire coil portion 32a and the heating wire non-coil portion 32b in the connecting side portion 23, the cooking plate 10 is excellent when the heating element 20 heats the cooking plate 10. Heating performance can be obtained, and generation of noise associated with switching of the heating element 20 between ON and OFF can be prevented.

  In addition, as described above, the electric yakiniku 1 is formed by dividing the cooking plate 10 into the food heating region 12H and the food heat retaining region 12K having a heating temperature lower than that of the food heating region 12H. 12H can be set in a region including a portion where the heating wire coil portion 32a is disposed, and the food material heat retaining region 12K can be set in a region including a portion where the heating wire non-coil portion 32b is disposed.

  According to the above configuration, noise is generated by repeatedly switching the heating element 20 between ON and OFF in a short time, so that the heat-sensitive rod 68 and the heating wire coil portion 32a are separated by at least a predetermined distance La. By forming the heating wire coil portion 32a and the heating wire non-coil portion 32b along the length direction of the heating element 20, the heating wire non-coil portion 32b that does not supply heat to the cooking plate 10 in the cooking plate 10 is formed. Can be effectively used as the food insulation region 12K.

  The food is kept at an appropriate temperature by the heat transmitted from the food heating region 12H to the food heat retaining region 12K by placing the food heated region 12K until the food heated in the food heating region 12H is eaten. Can be kept warm.

  Further, as described above, since the electric grill 1 is configured integrally with the cooking plate 10 in contact with the cooking plate 10, it can smoothly supply heat from the heating plate 20 to the cooking plate 10. Heating performance can be obtained.

  In general, since the electric grill 1 requires heating performance, it is often configured with a high heating performance such as the electric capacity of the heating element 20. For this reason, the heat-sensitive rod 68 is particularly susceptible to fluctuations in the heat-sensitive temperature associated with ON and OFF of the heating element 20, and noise is particularly likely to occur. As described above, since the influence of the heat fluctuation transmitted from the heating element 20 to the heat sensitive rod 68 can be delayed, noise is generated even in a configuration such as an electric roasting apparatus having high heating performance and being easily affected by the heat fluctuation. Can be surely prevented.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The electric cooker body corresponds to the electric grilled meat body 50,
The electric cooker corresponds to the electric yakiniku 1
The socket corresponds to the socket 40,
The connection terminal corresponds to the female terminal 67,
The temperature control unit corresponds to the rotary temperature control lever 65 and the temperature control circuit unit 66, but the present invention is not limited to the above-described embodiment, and can be formed in various other embodiments.
For example, the electric cooker of the present invention is limited to the temperature adjustment by switching the heating element 20 to ON or OFF when the predetermined temperature Ta is reached, as in the above-described electric grill 1. First, as shown in FIG. 8, a predetermined upper limit temperature Tau for turning off the heat generation state when the predetermined temperature Ta is exceeded when the heat sensitive temperature rises, and a heat generation when the heat sensitive temperature is exceeded when the heat sensitive temperature is lowered. A method may be applied in which the temperature is adjusted by setting it in two stages with a predetermined lower limit temperature Tad that turns the state ON.
FIG. 8 is a graph showing the relationship between the heat sensitive temperature and time when the predetermined temperature Ta is provided in two stages of the upper limit temperature Tau and the lower limit temperature Tad. A waveform G100 indicated by a broken line in FIG. A state of temperature adjustment of the yakiniku device 100 is shown, and a waveform G1A shown by a solid line in FIG. 8 shows a state of temperature adjustment of the electric meat roasting device of this embodiment.

  As is apparent from FIG. 8, even when the temperature is adjusted at two stages of the upper limit temperature Tau and the lower limit temperature Tad, the electric meat roaster according to the present embodiment as described in FIG. Compared with the heat sensitive temperature of the electric grilling apparatus 100, the switching of the heating element 20 between ON and OFF can be delayed, and the temperature can be adjusted without generating noise.

DESCRIPTION OF SYMBOLS 1 ... Electric roast apparatus 10 ... Cooking plate 12H ... Food heating area | region 12K ... Ingredient heat retention area | region 20 ... Heat generating body 21 ... Heat generating body main body 22 ... A pair of heat generating body base 23 ... Connection side part 25 ... A pair of wide side part 32 ... Electricity Heat wire 32a ... Heating wire coil portion 32b ... Heating wire non-coil portion 35 ... Boundary portion 40 ... Socket 50 ... Electric roasting device body 60 ... Electrical connection plug 65 ... Rotary temperature control lever 66 ... Temperature control circuit portion 67 ... Connection terminal 68 ... Thermal stick La ... Predetermined distance Ta, Tau, Tad ... Predetermined set temperature Y1 ... Insertion direction

Claims (6)

A cooking plate, and an electric cooker body holding the cooking plate;
A heating element that generates heat when energized and supplies heat to the cooking plate;
The cooking plate and the electric connection plug to be inserted into the insertion port provided on at least one side of the electric cooker body,
The heating element,
A heating element body disposed below the surface of the cooking plate;
It is composed of a pair of heating element bases arranged in the insertion port,
The electrical connection plug;
In a state of being inserted into the insertion port, a connection terminal that is electrically connected to the distal ends of the pair of heating element bases,
A heat-sensitive rod disposed between the pair of heating element bases;
An electric cooker configured with a temperature adjusting unit that switches the heating element to an energized state when the temperature sensed by the heat-sensitive rod is lower than a predetermined set temperature and switches to a non-energized state when the set temperature is reached Because
An electric cooker having a heat capacity increasing structure for increasing a heat capacity between the heat-sensitive rod and the heating element. The heating element is composed of a heating part and a non-heating part,
The heat generating portion is configured in at least a part of the heat generating body main body in the heat generating body, and the non-heat generating portion is configured in at least a part of the pair of heat generating body bases in the heat generating body,
2. The electric cooker according to claim 1, wherein the heat capacity increasing structure is a structure in which the heat generating portion is arranged at a position separated from the heat sensitive rod by at least a predetermined distance. The heating element is formed in a long shape,
The both ends of the heating element in the length direction are constituted by the pair of heating element bases, and the portion between the pair of heating element bases in the length direction of the heating element is constituted by the heating element body,
The heating element is provided with a heating wire along the length direction of the heating element,
The heating portion is formed by a heating wire coil portion that is a coiled portion of the heating wire,
The electric cooker according to claim 2, wherein the non-heat generating portion is formed of a heating wire non-coiled portion that is a linear portion along the length direction of the heating element in the heating wire. Forming the heating element body in an annular shape;
The pair of heating element bases and the heat-sensitive rod are arranged in parallel to each other along the insertion direction to the insertion port,
A pair of wide side portions disposed on each side of the heating element body so as to face each other in parallel with the heating element base, on each side spaced apart from the gap between the pair of heating element bases;
A connecting side portion that connects between the heating element base portion and the wide side portion;
The electric cooker according to claim 3, wherein a boundary portion between the non-heat generating portion and the heat generating portion in the length direction of the heat generating element is disposed on the connecting side portion. The cooking plate,
Formed by dividing into a food heating region and a food insulation region having a heating temperature lower than the food heating region,
The food heating area is set to an area including a portion where the heat generating portion is disposed,
The electric cooker according to claim 4, wherein the food insulation region is set to a region including a portion where the non-heat generating portion is disposed. The electric cooker according to any one of claims 1 to 5, wherein the heating element is integrally formed in contact with the cooking plate.

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