JP5492646B2 - Induction heating cooker - Google Patents

Description

  The present invention relates to a high-frequency cooking device including a magnetron that generates microwaves and a heater as a heating means for heating food.

  Conventionally, microwave ovens have been equipped with microwave ovens that generate food in a short period of time using microwaves that are heated from the inside, grill heating that is heated from the surface of foods using electric heaters, and oven heating. In particular, range heating is used to warm food, oven heating is used to heat the whole food, and grill heating is used to cook the food surface by baking.

  Moreover, it is known that heating time can be shortened by using together range heating, grill heating, and oven heating.

  Furthermore, in Patent Document 1, food is placed on a saucer (cooking dish) to which a high-frequency heating element (heating element) that generates heat by absorption of high-frequency (microwave) is closely attached, and range heating (microwave heating) and a heating chamber are placed. By simultaneously performing the heater heating (grill heating) provided at the top, the high-frequency heating element of the saucer generates heat due to the range heating, and the surface of the food that is in contact with the saucer is colored by baking, A cooking utensil for a high-frequency heating cooking appliance is disclosed in which both the front and back surfaces of food are burnt simultaneously by heating the front side of the article to be heated by heater heating.

JP 2006-52932 A

  In recent years, cooking methods capable of efficiently cooking and reducing cooking time without taking time and effort in a cooking device have been preferred.

  Therefore, as shown in Patent Document 1, when range heating is performed on a saucer with a high-frequency heating element adhered thereto, the closer the distance between the saucer and the high-frequency supply unit, the higher the frequency is absorbed by the high-frequency heating element and the higher the temperature of the high-frequency heating element. When the distance between the tray and the high-frequency supply section increases, the output of the high-frequency wave decreases until it is absorbed by the high-frequency heating element, so that the temperature of the high-frequency heating element also decreases.

  Therefore, when food is heated by using a saucer with a high-frequency heating element in close contact with the range heating and heater heating provided in the upper part of the heating chamber, the upper rail close to the upper part of the heating chamber is placed on the saucer on which the food is placed. Then, the distance between the food and the heating means provided at the upper part of the heating chamber is close, and the heating power to bake the upper surface of the food is strong, and conversely, the lower surface side of the food is far away from the high-frequency supply section provided below Therefore, the loss of the high frequency generated below the heating chamber partitioned by the tray is increased. Therefore, there is a problem that the heating temperature of the high-frequency heating element is lowered and the thermal power is weakened.

  In addition, if the tray on which food is placed is placed on the lower rail near the lower part of the heating chamber, the distance between the food and the heating means provided at the upper part of the heating chamber is far away, and the heating power to bake the upper surface of the food is weak. Since the distance from the supply part of the high frequency provided below to the saucer becomes close to the lower surface side of the high frequency, the high frequency is efficiently absorbed by the high frequency heating element. Therefore, there is a problem that the heat generation temperature becomes high and the thermal power becomes strong.

  Furthermore, since heating is performed only by heat conduction from the surface of the food to heat the food, there is a problem of requiring a long time for heating.

The present invention is made in order to solve the above-mentioned problems. In claim 1, a heating chamber for storing food, a cooking dish for placing the food, a table plate for placing the cooking dish, A magnetron for generating microwaves for heating the food; a waveguide for guiding the microwaves to the bottom of the heating chamber; and an opening for passing the microwaves through the waveguide and the bottom of the heating chamber. And a rotating antenna for radiating the microwave that has passed through the opening to the heating chamber, the cooking dish is made of a metal dish part on which the food is placed, and the metal dish A heating element that absorbs microwaves adhered to the back side of the part and generates heat; a rotating shaft that supports the metal plate part; and a high-position grounding part and a low position that are different in two directions from the rotating axis A metal metal leg provided with a grounding part and a rotating shaft of the metal leg are rotated. And a microwave control means portion serving as an antenna between the rotating shaft of the metal leg portion and the high position grounding portion, and the cooking plate is mounted on the table plate. when location, if the high position ground portion was open to the outside is placed in contact with the table plate, the high position the ground portion of the microwave controller unit be located outside the outer periphery of the rotating antenna To capture the microwave radiated from the rotating antenna, efficiently transmit the captured microwave to the heating element , close the high position grounding portion on the inside, and place the low position grounding portion in contact with the table plate. If you location, the heating temperature of the microwave controller unit inhibits the absorption of microwaves to the heating element be located between the rotating antenna and the heating element the heating element In which was set to be Kusuru.

In Claim 2, the cooking dish which mounts a foodstuff, the table plate which mounts this cooking dish, the heating chamber equipped with this table plate in the bottom face, the magnetron which generate | occur | produces a microwave, It generate | occur | produced in this magnetron A waveguide that guides the microwave to the heating chamber; and a rotating antenna that diffuses the microwave guided to the heating chamber through the waveguide; and the cooking dish includes a metal dish part; A heating element that is provided on the back side of the metal dish part and generates heat by absorbing microwaves; and a first leg part that supports the metal dish part when the metal dish part is used at a low position; When the metal dish part is used at a high position, the second leg part is configured to support the metal dish part, and when the metal dish part is used at a low position, the second leg part is configured. Is disposed between the rotating antenna and the heating element. And in, it is an the second antenna to suppress the absorption of microwaves to lower the heating temperature of the heating element of the leg portion to the heating element.

  According to the present invention, when heating an object to be heated placed on a cooking pan, heating from the upper surface by grill heating, heating from the lower surface by a heating element that generates heat by microwave heating, and the inside of the object to be heated by microwaves Cooking time can be shortened by using heating from the combination.

  Further, even when the cooking dish is placed and heated at a position far from the microwave supply unit, microwave loss can be reduced and the microwave can be efficiently supplied to the heating element of the cooking dish.

  Furthermore, even when the cooking pan is placed and heated at a position closer to the microwave supply unit, an excessive supply amount of microwave to the heating element can be prevented.

It is the perspective view which looked at the heating-cooker main body of this invention from the front side. It is AA sectional drawing of FIG. It is a perspective view in the state where the metal leg part of the cooking pan of the cooking-by-heating machine by a 1st example was opened. It is a front view of the state which opened the metal leg part of the cooking plate of the heating cooker by 1st Example. It is the perspective view which looked at the state which opened the metal leg part of the cooking plate of the heating cooker by 1st Example from the back surface. It is a perspective view of the state where the metal leg part of the cooking plate of the cooking-by-heating machine by a 1st example was closed. It is a front view of the state which closed the metal leg part of the cooking plate of the heating cooker by 1st Example. It is the perspective view which looked at the state which closed the metal leg part of the cooking plate of the heating cooker by 1st Example from the back surface. It is explanatory drawing which opened and installed the metal leg part of the cooking plate in the heating chamber (BB sectional drawing of FIG. 1) of the heating cooker by 1st Example. It is explanatory drawing which closed and placed the metal leg part of the cooking plate in the heating chamber (BB sectional drawing of FIG. 1) of the heating cooker by 1st Example. It is a perspective view of the state where the metal leg part of the cooking plate of the cooking-by-heating machine by a 2nd example was closed. It is a front view of the state which closed the metal leg part of the cooking plate of the heating cooker by 2nd Example. It is a side view of the state which opened the metal leg part of the cooking plate of the heating cooker by 2nd Example.

  Hereinafter, the cooking device of the present invention will be described by taking as an example an electric microwave oven provided with a heater and a magnetron as heating means.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 10 described above.

  In the figure, the main body 1 of the heating cooker is provided with a heating chamber 28 in which food to be heated is placed, and the food in the heating chamber 28 is cooked by the microwave generated from the magnetron 33 or the heat of the heater.

  The door 2 opens and closes to put food in and out of the heating chamber 28. By closing the door 2, the heating chamber 28 is hermetically sealed to prevent leakage of high frequency used when heating the food, and the heat of the heater This makes it possible to heat efficiently.

  The handle 9 is attached to the door 2 and facilitates opening and closing of the door 2, and has a shape that can be easily grasped by a hand.

  The glass window 3 is attached to the door 2 so that the state of food being cooked can be confirmed, and uses glass that can withstand high temperatures due to heat generated by a heater or the like.

  The display unit 5 and the operation unit 6 are provided on the operation panel 4 below the front surface of the door 2, and the operation unit 6 includes a microwave heating setting key 6a for setting high-frequency heating, and a heater capable of selecting grill heating or oven heating. A heating setting key 6b, a setting dial 6d for inputting the heating intensity and heating time of the high-frequency output, and a start key 6c for starting heating are provided, and the contents inputted from the operation unit 6 and cooking are displayed on the display unit 5. The progress status is displayed.

  The outer frame 7 is a cabinet that covers the upper surface and the left and right side surfaces of the main body 1 of the heating cooker.

  The rear plate 10 forms the rear surface of the outer frame 7, and an external exhaust duct 18 is attached to the upper portion of the rear plate 10 to discharge steam discharged from food and cooling air after cooling the components inside the main body 1. .

  The external exhaust duct 18 exhausts the exhaust in the upper direction of the main body 1 and exhausts the exhaust toward the front side, so that the exhaust does not contaminate the wall even when the back is brought close to the wall.

  The machine room 20 is provided in a space between the heating chamber bottom surface 28a and the bottom plate 21 of the main body 1, and a magnetron 33 for heating food on the bottom plate 21, a waveguide 47 connected to the magnetron 33, The inverter board 22 that supplies power to the magnetron 33 and the control means (not shown) for controlling the heating means and the heating time are incorporated.

  The heating chamber bottom surface 28a has a concave shape in the substantially central portion, and the rotating antenna 26 is installed therein, and the microwave radiated from the magnetron 33 is output to the waveguide 47 and the output shaft 46a of the rotating antenna driving means 46. Flows into the lower surface of the rotating antenna 26 through the opening 47a that penetrates, and is diffused by the rotating antenna 26 and radiated to the heating chamber 28. The rotating antenna 26 is connected to the output shaft 46 a of the rotating antenna driving means 46.

  A hot air unit 11 is attached to the rear of the heating chamber 28, and a hot air fan 32 that efficiently circulates the air in the heating chamber 28 is attached in the hot air unit 11. An intake hole 31 and a blowout hole 30 are provided.

  The hot air fan 32 rotates by driving a hot air motor 13 attached to the outside of the hot air case 11 a and heats the air circulating in the hot air heater 14.

  An upper heater 12 is attached to the back side of the top surface of the heating chamber 28. The upper heater 12 is formed in a flat shape by wrapping a heater wire around a mica plate, pressing and fixing the mica plate against the back side of the top surface of the heating chamber 28, and heating the top surface of the heating chamber 28 to radiate heat to the food in the heating chamber 28. It is something to bake.

  Further, a plurality of weight detection means 25 are provided on the heating chamber bottom surface 28a. For example, a right weight sensor 25a and a left weight sensor 25b are provided on the front left and right, and a back weight sensor 25c is provided on the rear center, and a table plate 24 is placed on the weight detection means 25.

  The weight of the food is determined by the total food weight detected by each weight detection means 25.

  The table plate 24 is for placing the cooking dish 16 and food items described later, has heat resistance so that it can be used for both heater heating and microwave heating, and has good microwave permeability. It is molded from materials such as porcelain that are not sanitary.

  The cooking pan 16 has a heating element 35, which will be described later, in close contact with the back surface of a metal plate portion 34 obtained by unevenly processing the surface of a metal plate having high thermal conductivity such as aluminum, and further, a metal leg portion 37 made of metal is a support member portion. 36 is rotatably attached.

  Further, when the cooking dish 16 is placed on the table plate 24, a gap is provided between the heating chamber wall surface 28c and the microwave supplied from the heating chamber bottom surface 28a side so that a microwave can be supplied above the cooking dish 16. It is said.

  The size of the gap is such that the wavelength of the microwave used for heating is λ (in the case of a microwave with a frequency of 2.45 GHz, the microwave wavelength λ is about 120 mm), and the gap is not less than the cutoff wavelength λ / 2 (60 mm). (Space) is required. Here, one side of the gap corresponds to the respective dimensions of the depth and width of the heating chamber 28. The depth dimension of the heating chamber 28 of this embodiment is 322 mm, the width dimension is 400 mm, which is sufficient for the cutoff wavelength λ / 2 or more. Therefore, the gap between the cooking pan 16 and the heating chamber wall surface 28c is sufficient to allow the cooking pan 16 to enter the heating chamber 28. In reality, the cooking pan 16 and the heating chamber 28 are heated. A distance that does not cause a spark is provided between the chamber wall surface 28c.

  The heating element 35 is an object that absorbs microwaves and generates heat. In this embodiment, a material in which ferrite powder is mixed with silicon is processed in accordance with the shape of the metal dish portion 34 as shown in FIGS. It adheres to the back surface of the metal dish part 34, and is affixed.

  The support part 36 is made of a resin such as PPS having no electrical conductivity and high heat resistance, and is fixed to the metal dish part 34 and rotatably supports a metal leg part 37 to be described later.

  The metal leg portion 37 is formed by bending a metal round bar, and can be adjusted in two directions from the rotatable rotation shaft 37a so that the height of the cooking pan 16 can be adjusted to two different heights. As shown in the front sectional view of FIG. 4, the high-position grounding portion 37b and the low-position grounding portion sandwich the rotating shaft 37a. Reference numeral 37c denotes a substantially square shape.

  Further, the length of one side from the rotating shaft 37a to the high-position grounding portion 37b is set to λ / 2 of the microwave wavelength λ (in the case of a microwave having a frequency of 2.45 GHz, the microwave wavelength λ is about 120 mm). This is a microwave control means unit that is set to an integral multiple (60 mm, 120 mm, 180 mm) and set to a length that facilitates transmission and control of microwaves.

  Further, when the high position grounding portion 37b of the metal leg 37 is opened to the outside with respect to the cooking pan 16 (FIGS. 3, 4, and 5), the high position grounding portion 37b is placed in contact with the table plate 24. The high-position grounding portion 37b of the microwave control means is set so as to be located outside the outer periphery of the rotating antenna 26 (on the inner wall side of the heating chamber 28) (FIG. 9). At this time, the height of the cooking pan 16 is high when viewed from the table plate 24.

  Further, the high position grounding portion 37b of the metal leg 37 is closed to the inside with respect to the cooking pan 16 (FIGS. 6, 7, and 8), and the high position grounding portion 37b is stored below the cooking pan 16 so that the low When the position grounding part 37c is placed in contact with the table plate 24, the microwave control means part including the high position grounding part 37b is set so as to be positioned between the heating element 35 and the rotating antenna 26 (FIG. 10). Yes. At this time, the height of the cooking pan 16 is low as viewed from the table plate 24.

  Furthermore, since the cooking pan 16 is made of a material having high heat resistance, it can also be used for cooking using an electric heater such as an oven or a grill where the heating chamber 28 becomes hot.

  When the cooking pan 16 is stored, the high position grounding portion 37b of the metal leg portion 37 is closed to the inside with respect to the cooking pan 16, so that the cooking tray 16 can be stored at a low height.

  The present embodiment is configured as described above, and the operation will be described next with reference to FIG.

  In cooking, grill heating and microwave heating are used to scorch both surfaces of the object to be heated 15, and at the same time, the interior is heated and baked.

  Since the hamburger of the object to be heated 15 is thin, it can be cooked sufficiently to the inside in the process of scoring both surfaces, and cooking without the need to increase the heating from the inside. Therefore, the high position grounding portion 37 b of the metal leg 37 is opened with respect to the cooking plate 16 and placed on the table plate 24 so that the cooking plate 16 is brought close to the upper heater 12.

  Although the heating time can be set manually, the weight of the cooking pan 16 placed on the table plate 24 is tared by using the weight sensor 25, so that the net weight of the article 15 to be heated is obtained. It is also possible to detect and set the heating time according to the weight of the article 15 to be heated.

  When cooking starts, grill heating starts energizing the upper heater 12, heats the top surface of the heating chamber 28, and directly burns the surface on the upper surface side of the heated object 15 to the inside of the heated object 15. Heat.

  Further, in microwave heating, the microwave radiated from the magnetron 33 passes through the waveguide 47 and passes through the opening 47a through which the output shaft 46a of the rotating antenna driving means 46 provided on the heating chamber bottom surface 28a passes. It flows into the lower surface of the rotating antenna 26, is diffused by the rotating antenna 26, and is radiated into the heating chamber 28. The radiated microwave is absorbed by the heating element 35 attached to the back surface of the cooking pan 16, so that the heating element 35 generates heat and is baked on the surface of the object to be heated 15 that is in contact with the metal dish portion 34. While scorching. Moreover, it passes from the clearance gap provided between the cooking pan 16 and the heating chamber wall surface 28c, and is heated also from the inside of the to-be-heated material 15 by being absorbed by the to-be-heated material 15 mounted in the cooking pan 16. To do.

  The movement of the microwave will be described in detail. The microwave diffused and radiated from the rotating antenna 26 provided on the bottom surface 28a of the heating chamber is absorbed by the heating element 35 attached to the back surface of the cooking dish 16. And the metal legs 37 placed outside the outer periphery of the rotating antenna 26 and the heating plate 35 passing through the gap between the cooking pan 16 and the heating chamber wall surface 28c. It is divided roughly into what is radiated to the upper surface.

  The microwave transmitted and controlled by the metal leg 37 is generated by the microwave control means on one side from the rotation axis 37a of the metal leg 37 to the high-position grounding part 37b, and from the rotation axis 37a of the metal leg 37. The length of one side to the high-position grounding portion 37b is an integral multiple (60 mm, 120 mm, 180 mm) of λ / 2 of the wavelength λ of the microwave (in the case of a microwave having a frequency of 2.45 GHz, the microwave wavelength λ is about 120 mm). ). The function of the microwave control means is to capture the microwave diffused from the rotating antenna 26 provided on the heating chamber bottom surface 28a and radiated in the direction of the heating chamber wall surface 28c, and between the cooking dish 16 and the heating chamber wall surface 28c. The amount of microwaves radiated to the upper surface of the cooking dish 16 through the cooking plate 16 is suppressed, and the captured microwaves are efficiently transmitted to the heating element 35 of the cooking dish 16. Loss of microwaves generated on the heating chamber bottom surface 28a side is reduced.

  Moreover, the gap between the cooking pan 16 and the heating chamber wall surface 28c can pass through because the dimension of one side of the clearance is 322 mm in depth of the heating chamber 28 and the width is 400 mm, which is sufficient for the microwave cutoff wavelength λ / 2 or more. This is because a sufficient dimension is ensured and a gap is provided between the cooking pan 16 and the wall surface 28c so that no spark is generated.

  However, the length from the rotating shaft 37a of the metal leg portion 37a to the high position grounding portion 37b and the gap between the wall surface 28c and the cooking pan 16 need to be adjusted according to the conditions required to bake both surfaces of the heated object 15. There is. The condition is that the heating power of the upper heater 12 with respect to the object to be heated 15, the distance from the upper heater 12, the amount of heat generated by the heating element 35 due to the microwave output intensity of the range heating, and the object to be heated 15 are heated from the inside. It is determined by the microwave output required to do.

  When the object to be heated 15 is thin like a hamburger or the like, even if the output of the microwave heated from the inside of the object to be heated 15 is weak, if there is time to bake both surfaces, heat conduction from the surface The inside is also heated moderately. Therefore, the output of the microwave that passes between the cooking pan 16 and the heating chamber wall 28 c and is radiated to the upper surface of the cooking pan 16 is suppressed by the metal legs 37 placed outside the outer periphery of the rotating antenna 26. doing.

  The cooking is baked deliciously while discharging excess moisture and fat contained in the heated object 15 by the wavy concave and convex recesses forming the surface of the cooking pan 16.

  Next, the baking of grilled pork will be described with reference to FIG.

  As described above, cooking is performed by using grill heating and range heating, scoring both sides of the object to be heated 15 while simultaneously heating from the inside, and even when making large meat, it is baked in a short time. In this case, it is a dish that needs to be baked by increasing the heating from the inside while suppressing the burning of the surface.

  In such a case, the heating power is weakened by increasing the distance between the upper heater 12 and the heated object 15 placed on the cooking dish 16, the heating temperature of the heating element 35 of the cooking dish 16 is lowered, and the upper surface of the cooking dish 16. Therefore, the high position grounding portion 37b of the metal leg 37 of the cooking pan 16 is closed inward with respect to the cooking tray 16, and the low position grounding portion 37c is attached to the table plate 24. Place it in contact.

  When cooking is started, the grill heating directly burns the heated object 15 while scoring the surface of the heated object 15, and the range heating is diffused and radiated from the rotary antenna 26 provided on the bottom surface 28a of the heating chamber. Microwaves are suppressed by the metal legs 37 of the microwave control means that closes the high-position grounding part 37 b to the cooking dish 16 and absorbed by the heating element 35 attached to the back surface of the cooking dish 16. The microwave output is weakened to lower the heat generation temperature of the heating element 35, and the suppressed microwave is transmitted in the direction of the heating chamber wall surface 28c by the metal legs 37 serving as a closed antenna, 16 is passed through the gap between the heating chamber wall surface 28 c and radiated to the upper surface of the cooking pan 16.

  The movement of the microwave at this time will be described in detail. The microwave diffused and radiated from the rotating antenna 26 provided on the heating chamber bottom surface 28a is directly applied to the heating element 35 attached to the back surface of the cooking pan 16. What is absorbed and efficiently transmitted to the heating chamber wall surface 28c direction by the metal leg portion 37 of the microwave control means section in which the high position grounding portion 37b is closed to the inside with respect to the cooking pan 16, and the cooking pan 16 and the heating chamber. It is divided roughly into what passes between the wall surfaces 28c and is radiated | emitted to the upper surface of the cooking pan 16. FIG.

  Therefore, even if the cooking pan 16 is placed low relative to the table plate 24 and the distance between the heating chamber bottom surface 28a and the cooking pan 16 is narrow, the emitted microwaves are absorbed more than necessary by the heating element 35. And is efficiently transmitted to the object to be heated 15 placed on the cooking pan 16.

  A cooking device according to a second embodiment of the present invention will be described with reference to FIGS.

  The difference from the first embodiment is that the metal leg portion 37 is provided with a rotating shaft 37a serving as a microwave control means portion and one side of the high position grounding portion 37b, and the low position grounding portion 37c is provided on the support portion 36 side. However, when cooking and baking with increased heating from the inside while suppressing the burning of the surface, the metal legs 37 are closed to the inner side with respect to the cooking dish 16, so that the resin made below the cooking dish 16 is made of resin. The support tool part 36 has a protruding shape, and the low position grounding part 37 c of the support tool part 36 is placed in contact with the table plate 24. Also, in the process of scoring both surfaces, the metal legs 37 are opened to the outside with respect to the cooking pan 16 in the case of cooking that sufficiently passes through the inside and does not require much heating from the inside by microwaves. Thus, the high position grounding portion 37 b of the metal leg portion 37 is placed in contact with the table plate 24.

  Since the description of the operation is the same as that of the first embodiment, the description is omitted.

  As described above, according to the present embodiment, when heating an object to be heated placed on a cooking pan, heating from the upper surface by grill heating, heating from the lower surface by a heating element that generates heat by microwave heating, and micro Cooking time can be shortened by using heating from the inside of the object to be heated by waves.

  Further, even when the cooking dish is placed and heated at a position far from the microwave supply unit, microwave loss can be reduced and the microwave can be efficiently supplied to the heating element of the cooking dish.

  Furthermore, even when the cooking pan is placed and heated at a position closer to the microwave supply unit, it is possible to prevent an excessive supply amount of microwave to the heating element.

Main body of 1 cooking device
2 Door 12 Upper heater 15 Heated object 16 Cooking dish 26 Rotating antenna 28 Heating chamber 34 Metal dish part 35 Heating element 36 Supporting part 37 Metal leg part

Claims (3)

A heating chamber for storing food,
A cooking dish on which the food is placed;
A table plate on which the cooking dish is placed;
A magnetron that generates microwaves to heat the food;
A waveguide for guiding the microwave to the bottom surface of the heating chamber;
An opening for communicating microwaves through the waveguide and the bottom of the heating chamber;
A rotating antenna for radiating the microwave passing through the opening to the heating chamber;
The cooking dish is
A metal metal dish portion on which the food is placed;
A heating element that generates heat by absorbing the microwave adhered to the back side of the metal dish,
A metal metal leg provided with a rotating shaft and a high position grounding portion and a low position grounding portion having different distances in two directions from the rotating shaft, supporting the metal dish portion;
A support part that rotatably supports the rotation shaft of the metal leg part,
The microwave control means that plays the role of an antenna between the pivot axis of the metal leg and the high position grounding part,
When placing the cooking dish on the table plate,
When the high position grounding part is opened outside and placed in contact with the table plate, the high position grounding part of the microwave control means part is located outside the outer periphery of the rotating antenna, so that the rotating antenna The microwave radiated from is captured, the captured microwave is efficiently transmitted to the heating element ,
If the low position ground portion closes the high position grounding portion on the inner side was placed in contact with the table plate, the microwave controller unit said by located between the rotating antenna and the heating element A high frequency heating cooker characterized in that absorption of microwaves to a heating element is suppressed and a heating temperature of the heating element is lowered . A cooking dish on which food is placed;
A table plate on which the cooking dish is placed;
A heating chamber provided with the table plate on the bottom surface;
A magnetron that generates microwaves;
A waveguide for guiding the microwave generated by the magnetron to the heating chamber;
Through the waveguide anda rotating antenna for diffusing the microwaves guided into the heating chamber,
The cooking dish is
A metal dish,
A heating element that is provided on the back side of the metal dish part and generates heat by absorbing microwaves;
A first leg for supporting the metal dish when the metal dish is used at a low position;
A second leg for supporting the metal dish when the metal dish is used at a high position;
Consists of
When the metal dish is used at a low position, the second leg is disposed between the rotating antenna and the heating element, so that the second leg can be microwaved to the heating element. A high-frequency heating cooker characterized by being an antenna for suppressing absorption and lowering the heating temperature of the heating element.   The high frequency heating cooker according to claim 2,
  The high-frequency heating cooker, wherein the second leg is a metal leg.

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