JP2001304563A - High frequency heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain the most suitable positions of a temperature detecting means and an electrical supplying port in such a way that a low-temperature item to be heated of is concentrically heated while a rotation of a mounting table is being stopped and a detecting of temperature can be carried out properly by the temperature detecting means with a substantial radius portion of the mounting table being applied as an angle of field of view. SOLUTION: Heating of an item to be heated is carried out under a combination of both a uniform heating under a rotation of a mounting table 3 and a concentrated heating in which a rotation of the mounting table 3 is stopped and an item to be heated 22 at a low temperature side near the electrical supplying port 13 is heated with a high electric wave, wherein a location near an upper segment of an electrical supplying port 13 is provided with a temperature detecting means 14 in which a substantial radius portion of the mounting table 3 is applied as an angle of sight view in respect to the electrical supplying port 13 positioned at the side surface wall of a heating chamber. With such an arrangement as above, it is possible to perform a heating operation while monitoring the item to be heated 22 at the low temperature side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency heating device for stopping the rotation of a mounting table and intensively heating an object to be heated in the vicinity of a power supply port. It is related to what has been planned.

[0002]

2. Description of the Related Art Conventionally, this type of heating apparatus is disclosed in, for example, Japanese Patent Application Laid-Open Nos. Hei 6-201137 and Hei 9-27389.
Is disclosed in Japanese Unexamined Patent Application Publication No. 2000-205,878.

FIG. 13 and FIG.
No. 7 discloses a temperature detecting means 2 for an object to be heated 1
And the rotating mounting table 3. FIG. 14 includes a mounting table 3 on which the object to be heated 1 is rotated and a temperature detecting means 2 for the object to be heated 1, and an infrared sensor is used as the temperature detecting means 2. With viewing angle. FIG. 15 is a view in which the radius of the mounting table 3 which rotates by rotating the infrared sensor by the driving means 4 is set to the viewing angle. In any case, the temperature detecting means 2 is located on the upper surface of the heating chamber 5.

FIGS. 15 to 17 show Japanese Patent Application Laid-Open No. 9-27389.
As described in Japanese Patent Application Laid-Open No. H10-209, the temperature detecting means 2 of the object to be heated 1 is combined with the non-rotating mounting table 6, and the infrared sensor as the temperature detecting means 2 makes the entire non-rotating mounting table 6 a viewing angle. It was done. Further, a shield plate 8 having an opening as a power supply port 7a and a shield plate 9 having an opening as a power supply port 7b are provided, and the shield plates 8, 9 are rotated in combination. When the temperature of the portion becomes high, the central portion of the power supply port 7a is switched to be an opening, and when the temperature of the central portion of the article to be heated 1 is high, the peripheral portion of the power supply port 7a is switched to be an opening. That is, the power supply port 7
a and 7b are located directly below the lower surface wall of the mounting table 6, and the temperature detecting means 2 is located on the upper surface of the heating chamber 5.

[0005]

However, in the conventional configurations, the objects to be heated are heated under the same conditions (the same temperature, the same type, and the same heat absorption amount). Therefore, the positional relationship between the power supply port and the temperature detecting means has not been particularly problematic.

However, according to the present invention, when a temperature difference is determined when a plurality of different objects to be heated are simultaneously heated, the rotation of the mounting table is stopped and concentrated so that the object to be heated on the low temperature side is located near the power supply port. It uses a new heating method of heating. Therefore, the temperature of the object to be heated on the mounting table located near the power supply port must be detected by the temperature detecting means. That is, in the heating method according to the present invention, in the case of the temperature detecting means in which the viewing angle is substantially the radius of the mounting table as the specific place, the position of the power supply port and the position of the temperature detecting means are not appropriate places, and the object to be heated is not suitable. A new problem arises in that the temperature cannot be detected. SUMMARY OF THE INVENTION The present invention solves the above-mentioned problem, and aims at optimizing the position of a temperature detecting means with respect to a power supply port.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention solves the above problem by uniformly heating the rotation of the mounting table, stopping the rotation of the mounting table, and centrally heating the low-temperature-side object to be heated near the power supply port. Combining with the above, the heating control for discriminating the temperature difference by occasionally rotating the mounting table during the centralized heating is added to the temperature detecting means having a viewing angle of approximately the radius of the mounting table during the concentrated heating, The temperature detection means is provided near the upper part of the power supply port with respect to the power supply port located on the side wall of the heating chamber to optimize the positions of the temperature detection means and the power supply port.

According to the above invention, the uniform heating and the centralized heating are combined to form a plurality of objects to be heated, such as a case where the heating start temperature is different or a case where the amount of heat absorption is different, which is impossible with the conventional high frequency heating apparatus. It is very convenient because it realizes simultaneous heating and heating finish to the same temperature. In addition, the temperature detection means is provided near the upper part of the power supply port on the side wall of the heating chamber. Good thing.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides a power supply port for supplying high-frequency power to a heating chamber and a plurality of objects to be heated. A mounting table for performing centralized heating that applies more high-frequency power to the object to be heated near the power supply port than the object to be heated at another position when the rotation is stopped, and Temperature detection means for detecting the temperature of a plurality of objects to be heated for the uniform heating with a viewing angle of approximately the radius, and for monitoring the temperature change of the object to be heated near the power supply port during the concentrated heating, and detecting the temperature during the uniform heating. Means for detecting the temperatures of the plurality of objects to be heated, and determining a temperature difference between the objects to be heated based on the detection results; and A system that stops and concentrates heating when a heated object comes near the power supply port A high-frequency heating apparatus and means for the feeding port located on the side wall of the heating chamber, and configured to include the temperature detecting means at the top of the side wall.

The temperature detecting means is provided near the upper side of the power supply port on the side wall of the heating chamber. Even in the case of an object to be heated such as a cup, the liquid in the cup can be fully exposed, so that the temperature of the food can be reduced. The accuracy is better. Furthermore, in terms of comparative theory, dirt due to vapor or scattering from the object to be heated may be smaller than that provided on the upper wall of the heating chamber.

As another example of the power supply port located on the side wall of the heating chamber, the temperature detection means is provided on the side wall which is different from the side wall provided with the power supply port by 90 degrees.

Since the temperature detecting means is provided at a portion distant from the power supply port, the temperature detecting means is positioned at an upper portion so as to make a viewing angle approximately the radius of the mounting table slightly distant from the side wall. In addition, although there is a constraint condition that enables the entire appearance of a heated object such as a cup, the influence of radio wave noise can be neglected.

Further, as another example of the power supply port located on the side wall of the heating chamber, the power supply port is provided with a temperature detecting means having a function of preventing contamination on the upper wall of the heating chamber.

The cost is added to the prevention of contamination due to vapor or scattering from the object to be heated, but the accuracy of the food temperature is the best because the influence of radio noise can be neglected and the contents of the object to be heated can be directly seen.

Further, in the case of the power supply port located on the upper surface wall or the lower surface wall closer to the peripheral portion with respect to the center of the heating chamber, the temperature detecting means is provided on the side wall surface of the heating chamber near the power supply port. .

Although the width of the left and right sides is slightly increased, the influence of radio wave noise can be neglected, and the amount of dirt due to vapor and scattering from the object to be heated can be smaller than that provided on the upper wall of the heating chamber.

Further, in the case of the power supply port located on the upper surface wall near the peripheral portion with respect to the center portion of the heating chamber, a configuration is provided in which a temperature detecting means having a stain prevention function is added to the center portion of the upper surface wall of the heating chamber. And

[0018] In addition, the cost is added to the prevention of contamination due to the vapor or scattering from the object to be heated, and a protective cover is added to the temperature detecting means so as not to be affected by the noise of the radio wave from the power supply port. Although it is necessary, the contents of the object to be heated are directly viewed and the temperature accuracy is the best.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view showing the structure of a high-frequency heating apparatus according to an embodiment of the present invention, FIG. 2 is an operation block diagram, FIG. 3 is a number map provided on a mounting table, and FIG. FIG. 5 is a conceptual diagram of a plurality of objects to be heated having different heating start temperatures during uniform heating, FIG. 6 is a conceptual diagram of concentrated heating, and FIG. 7 is a position diagram of a power supply port and a temperature detecting unit. It is.

In FIG. 1, reference numerals 1a and 1b denote objects to be heated such as food, which are mounted on a mounting table 3 of a heating chamber 5.
The mounting table 3 is configured to rotate in the heating chamber 5 by the rotation mechanism 10 to rotate the objects to be heated 1a and 1b. The high-frequency generator 11 is coupled to the heating chamber 5 via the waveguide 12 and is supplied with power from the power supply port 13. A temperature detecting means 14 is provided above the waveguide 12. The temperature detecting means 14 detects the temperature of the heated objects 1a and 1b by detecting infrared rays and the like from the heated objects 1a and 1b passing through the opening 16 provided on the wall surface of the heating chamber 5. The temperature detecting means 14 includes a plurality of elements and is provided so as to detect infrared rays and the like from four points corresponding to substantially the radius of the mounting table 3.

FIG. 2 shows an operation block in which a temperature difference is determined by a determination means 16 such as a microcomputer based on a signal from the temperature detection means 14. The control means 17 functions based on the information to control the high frequency generator 11 and the rotating mechanism 10.

FIG. 3 shows the mounting table 3 equally divided in the circumferential direction to which addresses are added. For example, address 20 is set. The temperature of the object to be heated is detected by the temperature detecting means 14, and the temperature of the object to be heated is used as the temperature of the address. In general, one object to be heated extends over a plurality of addresses.

In the sectional view of the main part of the temperature detecting means 14 shown in FIG. 4, four elements 19 for detecting infrared rays are provided in a metal case 18 and a window 20 made of silicon or the like is provided.
Detects infrared light passing through. A lens 21 made of plastic or the like that transmits infrared rays is provided outside the window 20. The lens 21 detects the temperatures of four points of approximately the radius of the mounting table 3 on which the elements 19 rotate. It is configured as follows.

Next, the operation and operation will be described.

When uniform heating by rotation of the mounting table 3 is started, the temperature detecting means 14 detects infrared rays and the like from four points corresponding to substantially the radius of the mounting table 3, and if the mounting table 3 rotates once, the temperature on the mounting table 3. The temperature of the objects to be heated 1a and 1b can be detected. At this time, the user looks at the address and replaces the object with the object to be heated.

When the control means 17 determines the temperature difference by the determining means 16 based on the detected signals of the temperatures of the plurality of objects to be heated 1a and 1b, the address on the low temperature side (the object to be heated) is the most electric field. The rotation mechanism 10 of the mounting table 3 is controlled so as to stop when it comes to the vicinity of the power supply port 13 where the strength is strong, thereby performing concentrated heating.

Thus, the objects to be heated 1a, 1b on the low temperature side are
Is temporarily concentrated, thereby reducing the temperature difference and simultaneously heating a plurality of objects to be heated 1a, 1b, and realizing the same temperature.

As shown in FIGS. 5 and 6, a case where frozen rice (minus 20 ° C.) 22 and cold miso soup (plus 5 ° C.) 23 are placed on the mounting table 3 and heated simultaneously will be described. Immediately after the mounting table 3 starts heating while rotating, the temperatures of the plurality of objects to be heated 22 and 23 can be detected. When the temperature difference is determined, the mounting table 3 is stopped near the power supply port 13 where the frozen rice 22 has the strongest electric field strength, and the concentrated heating is temporarily performed. This reduces the temperature difference. For example, when the temperature difference becomes equal to or less than a predetermined value, the heating mechanism 22 is controlled to rotate the mounting table 3 so as to uniformly heat both the objects 22 and 23 to be heated. And heat to the same temperature.

When the plurality of objects to be heated 22 and 23 are simultaneously heated, the temperature detecting means 14, which has a viewing angle substantially equal to the radius of the mounting table 3, rotates the mounting table 3 during uniform heating. The temperatures of the plurality of objects to be heated 22 and 23 can be detected. Therefore, there is no particular condition for the position of the temperature detecting means 14 provided in the heating chamber 5 when the mounting table 3 is rotated and heated, and the temperature detection means 14 may be provided at the upper part where the objects to be heated 22 and 23 can be seen as much as possible.

On the other hand, during the concentrated heating,
In order to stop the rotation of the mounting table 3 so that either one of the power supply ports 2 and 23 is located near the power supply port 13, in the temperature detecting unit 14 having a viewing angle substantially equal to the radius of the mounting table 3, Otherwise, the temperature cannot be detected.

For example, as shown in FIG. 7, the position of the temperature detecting means 14 is
When the viewing angle is set to be substantially equal to the radius of the mounting table 3 toward the center of the mounting table 3 in preparation for the facing side wall surface, the object 22 to be heated on the mounting table 3 during uniform heating by rotation of the mounting table 3, Although the temperature of 23 can be detected by the temperature detecting means 14, the rotation of the mounting table 3 is stopped so as to be located near the power supply port 13 at the time of concentrated heating, and the object to be heated on the low temperature side is heated. At this time, the temperature of the low-temperature-side heated object 22 cannot be detected. That is, in the case of the temperature detecting means 14 in which the viewing angle is set to substantially the radius of the mounting table 3, there is a correlation between the position of the temperature detecting means 14 and the position of the power supply port 13. It is important to look at the line connecting the.

As described above, the concentrated heating is performed by stopping the rotation of the mounting table 3 so that the low-temperature-side heated object 22 is positioned near the power supply port 13. It is located on a line connecting the mouth 13 and the center of the mounting table 3. Therefore, there are four means for detecting the temperature of the object to be heated on the low temperature side as much as possible by the temperature detecting means 14. This embodiment is one of them. That is, in the case of the power supply port 13 located on the side wall of the heating chamber 5, the power supply port 13
The upper side wall surface or the lower side wall surface of the power supply port 13 which is parallel to the line connecting the power supply port 13 and the center of the mounting table 3.
The upper side wall surface of No. 3 is good.

In this embodiment, the temperature detecting means 14 is provided above the power supply port 13, and the temperature detecting means 1 is provided so as not to be affected by radio noise from the power supply port 13.
4 is provided with a protective cover 24.

According to the present invention, the cost of the infrared sensor as the temperature detecting means can be significantly reduced. Further, the temperature detection means is provided above the power supply port,
If the protection cover is added to the temperature detecting means so as not to be affected by the noise of the radio wave from the power supply port, the whole structure becomes the simplest.

(Embodiment 2) FIG. 8 is a conceptual diagram at the time of concentrated heating in which the positions of the power supply port and the temperature detecting means are different by 90 degrees according to the embodiment of the present invention.

The difference from the first embodiment will be described.

This is another example of the case where the power supply port 13 is located on the side wall of the heating chamber 5, and the other side wall surface of the heating chamber 5 is different by 90 degrees (perpendicular to) the side wall surface provided with the power supply port 13. 25 is provided with a temperature detecting means 14. The viewing angle of the temperature detecting means 14 is different from the power supply port 13 and the mounting table 3.
The line of sight from the center of the mounting table 3 toward the power supply port 13 is defined as the viewing angle.

However, since the temperature detecting means 14 is provided at a portion distant from the power supply port 13, for example, in the case of heating foods placed on a plate, the temperature detecting means 14 is required to view all the foods. Although there is no problem, in the case of heating a cup or the like, the temperature detection means is positioned at the top so that the food (liquid) in the cup can be seen as much as possible so that the whole picture can be seen. Although there are some restrictions on the structure, the influence of the radio wave noise can be neglected because it is provided in a portion distant from the power supply port 13.

According to the present invention, since the temperature detecting means is provided at a portion distant from the power supply port, a substantially radius of the mounting table is viewed from a line connecting the power supply port and the center of the mounting table. In order to form a corner, there is a constraint condition that the temperature detecting means is positioned at the upper part so that the whole body can be seen even in the case of an object to be heated such as a cup, but the influence of radio wave noise can be ignored.

(Embodiment 3) FIG. 9 shows a combination of a power supply port provided on a side wall surface and a temperature detecting means provided on an upper wall according to an embodiment of the present invention when a plurality of objects to be heated having different heating start temperatures are concentratedly heated. It is a conceptual diagram.

The differences from the first and second embodiments will be described.

This is another example of the case where the power supply port 13 is located on the side wall of the heating chamber 5. The temperature detection means 14 is provided on the upper wall (90 degrees different) perpendicular to the side wall surface provided with the power supply port 13. It is provided. The viewing angle of the temperature detecting means 14 is on a line connecting the power supply port 13 and the center of the mounting table 3, and the viewing angle is substantially the radius from the center of the mounting table 3 toward the power supply port 13. .

However, the temperature detecting means 14 is provided on the upper wall of the heating chamber 5, and the temperature of the object 2 to be heated at the time of heating is increased.
For example, the surface of the lens 21 made of plastic or the like that transmits infrared rays shown in FIG. 25, for example.

According to the present invention, the cost is added to the prevention of contamination, but the influence of radio noise can be neglected, and the contents of the object to be heated can be viewed directly from the upper surface of the heating chamber, so that the temperature accuracy is the best.

(Embodiment 4) FIG. 10 is a conceptual diagram of a plurality of objects to be heated having different heating start temperatures in combination with a power supply port on the upper wall and temperature detecting means on the side wall according to the embodiment of the present invention. Reference numeral 11 is a conceptual diagram of a combination of a power supply port on the lower surface wall and a temperature detecting means on the side wall surface when a plurality of objects to be heated having different heating start temperatures are concentratedly heated.

The difference from the first to third embodiments will be described.

The heating chamber 5 is closer to the periphery than the center (FIG. 10).
In the case of the power supply port 13 located on the upper surface wall 26 (closer to the left), the side wall 27 of the heating chamber 5 that is different (orthogonal) by 90 degrees from the line connecting the power supply port 13 and the center of the mounting table 3.
(A left side wall in FIG. 10) provided with a temperature detecting means 14.

Further, in the case of the power supply port 13 located directly below the lower surface wall 28 closer to the peripheral part (rightward in FIG. 11) than the center part of the heating chamber 5, the power supply port 13 and the center part of the mounting table 3 are connected. The temperature detecting means 1 is attached to a side wall 29 (right side wall in FIG. 11) of the heating chamber 5 which is different (orthogonal) by 90 degrees from the connecting line.
Those with 4

The viewing angle of the temperature detecting means 14 is substantially the radius from the center of the mounting table 3 toward the side wall provided with the temperature detecting means 14.

In this example, FIGS.
It is to be noted that the power supply ports can be provided in both the X direction and the Y direction with respect to the position shown in (1), and the position of the temperature detecting means is also provided in the X direction and the Y direction according to this. .

According to the present invention, the size is slightly larger in the vertical direction than in the first embodiment, but the effect of radio wave noise is not negligible.

(Embodiment 5) FIG. 12 is a conceptual diagram of concentrated heating of a plurality of objects to be heated having different heating start temperatures when both a power supply port and a temperature detecting means according to an embodiment of the present invention are provided on an upper wall. .

The differences from the first to fourth embodiments will be described.

The power supply port 13 located on the upper surface wall 26 closer to the periphery (closer to the left in FIG. 12) with respect to the center of the heating chamber 5.
In this case, the temperature detecting means 14 is provided at a central portion near the upper surface wall 26 near the peripheral portion where the power supply port 13 is located.

The viewing angle of the temperature detecting means 14 is set to be substantially the radius of the power supply port 13 from the center of the mounting table 3.

However, since the temperature detecting means 14 is provided on the upper wall 26 of the heating chamber 5, it is conceivable that steam adheres from the objects to be heated 22, 23 during heating, and food splashes adhere. The surface of the lens 21 made of plastic or the like that transmits infrared rays shown in FIG. 4 is protected by, for example, performing a superhydrophilic treatment 25.

According to the present invention, it is necessary to add a protection cover to the temperature detecting means so that the cost is added to the prevention of dirt and the influence of the radio noise from the power supply port is not affected. Since the contents of the object to be heated are directly viewed from the upper wall of the heating chamber, the temperature accuracy is the best.

[0059]

As described above, according to the present invention, the following effects are obtained.

According to the present invention, the combination of uniform heating by rotation of the mounting table and the concentrated heating of the low-temperature-side object to be heated near the power supply port by stopping the rotation of the mounting table is achieved. In the case of the power supply port located on the side wall of the heating chamber, the temperature detection means is provided near the upper part of the power supply port in the case where the heating control for discriminating the temperature difference is added to the temperature detection means having a viewing angle of It is.

Further, even in the case of a heated object such as a cup, the liquid in the cup can be entirely exposed, so that the accuracy of the food temperature is better. Further, from a comparative theory, it is possible to reduce the amount of dirt due to vapor and scattering from the object to be heated as compared with that provided on the upper wall of the heating chamber, and the simplest overall configuration can be obtained.

Another example of the power supply port located on the side wall of the heating chamber is a configuration in which a temperature detecting means is provided on the other side wall which is different from the side wall of the heating chamber provided with the power supply port by 90 degrees. belongs to.

Since the temperature detecting means is provided at a position distant from the power supply port, the temperature detecting means is positioned at the upper part so as to make the viewing angle approximately the radius of the mounting table slightly distant from the side wall. In the case of an object to be heated such as a cup, there is also a constraint condition that the entire image can be obtained, but the influence of radio wave noise can be neglected.

Further, another example of the power supply port located on the side wall of the heating chamber has a structure provided with a temperature detecting means provided with a stain preventing function on the upper wall of the heating chamber.

The cost is added to the prevention of contamination due to vapor or scattering from the object to be heated, but the accuracy of the food temperature is the best because the influence of radio noise can be neglected and the contents of the object to be heated can be directly seen.

In the case of the power supply port located on the upper surface wall or the lower surface wall near the peripheral portion with respect to the center of the heating chamber, the temperature detection means is provided on the side wall surface of the heating chamber near the power supply port. Things.

The right and left widths are slightly increased due to the provision of the temperature detecting means, but the influence of radio noise can be neglected. Less dirt due to scattering.

Further, in the case of the power supply port located on the upper surface wall near the peripheral portion with respect to the center portion of the heating chamber, a temperature detecting means provided with a stain preventing function is provided at the center portion of the upper surface wall of the heating chamber. It is of a configuration.

[0069] The cost is added to the prevention of contamination due to vapor or scattering from the object to be heated, and a protective cover is added to the temperature detecting means so as not to be affected by the noise of radio waves from the power supply port. Although it is necessary, the contents of the object to be heated are directly viewed and the temperature accuracy is the best.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a high-frequency heating device according to a first embodiment of the present invention.

FIG. 2 is an operation block diagram of the high-frequency heating device.

FIG. 3 is a number map provided on a mounting table of the high-frequency heating device.

FIG. 4 is a sectional view of a main part of a temperature detecting means of the high-frequency heating device.

FIG. 5 is a conceptual diagram when a plurality of objects to be heated having different heating start temperatures of the high-frequency heating device are uniformly heated.

FIG. 6 is a conceptual diagram of the high-frequency heating device during concentrated heating.

FIG. 7 is a diagram showing a positional relationship between a power supply port of the high-frequency heating device and a temperature detecting unit.

FIG. 8 is a conceptual diagram of a high-frequency heating device according to a second embodiment of the present invention during concentrated heating in which the positions of a power supply port and a temperature detection unit are different by 90 degrees.

FIG. 9 is a conceptual diagram of the power supply port on the side wall surface and the temperature detecting means on the top wall during concentrated heating in the high frequency heating apparatus according to the third embodiment of the present invention.

FIG. 10 is a conceptual diagram of a high-frequency heating device according to a fourth embodiment of the present invention, in which a power supply port on an upper wall and a temperature detector on a side wall surface are concentratedly heated.

FIG. 11 is a conceptual diagram of a power supply port on a lower wall of the high-frequency heating device and temperature detection means on the side wall surface during concentrated heating.

FIG. 12 is a conceptual diagram of a high-frequency heating apparatus according to a fifth embodiment of the present invention in which a power supply port on an upper wall and a temperature detector on the upper wall are concentratedly heated.

FIG. 13 is a block diagram of a conventional heating device.

FIG. 14 is a block diagram of the driving means type.

FIG. 15 is a block diagram of another conventional heating device.

FIG. 16 is a plan view of the shielding plate.

FIG. 17 is a plan view of the shielding plate.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 heated object 3 mounting table 5 heating chamber 13 power supply port 14 temperature detecting means 22 low-temperature-side heated object 25 dirt prevention function 26 top wall 27, 29 side wall 28 bottom wall

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H05B 6/68 310 H05B 6/68 310Z 320 320Q F term (Reference) 3K086 AA01 AA03 BB02 CA04 CB04 CB15 CC01 CC06 CD04 CD11 CD19 CD27 DA02 3K090 AA01 AA06 AB02 AB03 BA01 BB01 CA02 DA01 DA19 EB02 EB16 EB29 3L086 AA02 AA04 BB04 BF07 CB06 CB08 CB17 CC03 CC06 CC07 CC12 CC14 DA08 DA12 DA29

Claims (5)

[Claims] A power supply port for supplying high-frequency power to the heating chamber;
A plurality of objects to be heated are placed, and when rotating, uniform heating is performed so that high-frequency power from the power supply port is evenly applied to the plurality of objects to be heated. A mounting table that performs centralized heating that gives more high-frequency power than other objects to be heated, and a viewing angle that is approximately the radius of the mounting table described above. At the time of heating, a temperature detecting means for monitoring a temperature change of the object to be heated near the power supply port, and at the time of uniform heating, the temperature detecting means detects the temperatures of the plurality of objects to be heated. Determination means for determining a temperature difference between the two, and control means for stopping and heating the rotating mounting table when the object to be heated on the low-temperature side comes near the power supply port based on the determination by the determination means. A high-frequency heating device, which is located on a side wall of the heating chamber. To the feed port, high frequency heating apparatus the temperature detecting means of the structures provided on top of the side wall. 2. A temperature sensor according to claim 1, further comprising a temperature detecting means on a side wall which is different from the side wall having a power supply port by 90 degrees.
The high-frequency heating device as described. 3. The high-frequency heating apparatus according to claim 1, further comprising a temperature detecting means provided with a contamination preventing function on the upper surface of the heating chamber with respect to a power supply port located on a side wall of the heating chamber. 4. In the case where the power supply port is located on the upper surface wall or the lower surface wall closer to the peripheral portion with respect to the center of the heating chamber, the temperature detection means is provided on the side wall surface of the heating chamber near the power supply port. The high-frequency heating device according to claim 1. 5. In the case of a power supply port located on the upper surface wall near the peripheral portion with respect to the center portion of the heating chamber, the power supply port is provided with a temperature detecting means having a stain prevention function added to the central portion of the upper surface of the heating chamber. The high-frequency heating device according to claim 1.