TWI627906B - Heating conditioner - Google Patents

Abstract

The heating conditioner of the present disclosure includes: a heating chamber to heat the object to be conditioned; a planar heater provided on the top wall of the heating chamber, and an inner heater disposed directly above a central portion of the top wall and surrounding the inner heater The heater outside the heater becomes a heat source; and the control unit controls the inside heater and the outside heater of the plane heater respectively. The top wall of the heating chamber has a three-dimensional curved surface on the side of the heating chamber which will become a concave surface, and the entire surface of the planar heater is closely fixed to the top wall.

Description

Heating conditioner

FIELD OF THE INVENTION The present disclosure relates to a heating conditioner for heating and conditioning a food to be conditioned in a heating chamber, and more particularly to a heating conditioner for heating a conditioned object by a planar heater provided on a top wall of the heating chamber.

BACKGROUND OF THE INVENTION As a heating conditioning mechanism of a heating conditioner, there have been used: an infrared heating unit that directly heats food by radiating heat rays, a microwave heating unit that heats food by irradiating microwaves, a steam heating unit that heats food by water vapor, and allows hot air to pass through. A hot air circulation unit for circulating food inside to heat food.

In addition, as a heating conditioner of the heating conditioner, there is a structure in which a planar heater is provided on a top wall of a heating chamber of a cuboid, and the top wall is heated, and the inside of the heating chamber is heated indirectly by the top wall (see Patent Documents 1 and 2). Prior art literature

Patent Literature Patent Literature 1: Japanese Patent Laid-Open No. 3-103206 Patent Literature 2: Japanese Patent Laid-Open No. 2010-54124

SUMMARY OF THE INVENTION As described above, in the heating conditioner, in order to perform the most appropriate heating and conditioning of the food to be conditioned in the heating chamber according to the cooking, an appropriate heating and conditioning mechanism can be selected. When the heating conditioner is used for heating conditioning, it is important to make the interior of the heating chamber reach the set conditioning temperature (set temperature) in a short time and keep the set temperature constant for a predetermined time. It is also important to shorten the conditioning time.

In the heating conditioner, in the configuration using a planar heater provided on the top wall as a heating conditioning mechanism, the top wall is heated, and the interior of the heating chamber is heated to a setting by the heat radiated from the heated top wall. temperature. Therefore, it is necessary to efficiently transfer the heat from the planar heater to the interior of the heating chamber. However, since the top wall repeatedly expands and contracts due to the heat of the flat heater, it is difficult to maintain the top wall surface and the flat heater in a close contact state frequently. Thereby, a gap (air layer) is generated between the top wall surface and the flat heater, and there is a problem that the heat transfer efficiency from the flat heater to the top wall is deteriorated.

The heat source (heating wire) of the planar heater is covered with an electrically insulating member. The heat from the heat source of the flat heater is transmitted to the top wall through the electrically insulating member to heat the top wall, and the indoor temperature of the heating chamber is raised to the set temperature by the heat of the heated top wall. In the conventional heating conditioner, a temperature detection mechanism is used to detect the indoor temperature, and an on / off control for the flat heater is performed based on the detected indoor temperature, so that the heating chamber interior becomes a set temperature. If, in such a conventional heating conditioner, a planar heater is used to heat the heating chamber until the indoor temperature reaches the set temperature, the flat heater when the indoor temperature reaches the set temperature will be higher than the set temperature, depending on The situation may exceed the heat-resistant temperature of the flat heater. Therefore, in the conventional heating conditioner, in consideration of safety and reliability, the flat heater is temporarily turned off before the indoor temperature reaches the set temperature, and the on and off operation of the flat heater is repeated afterwards. In this way, the indoor temperature gradually approaches the set temperature. As described above, in the conventional heating conditioner, since the planar heater is controlled to reach the set temperature based on the detected indoor temperature, it is difficult to achieve the set temperature with high accuracy, and it takes time until the set temperature is reached.

In addition, in the conventional heating conditioner, since the control of simply turning on and off the planar heater is repeated to maintain the indoor temperature at a set temperature, the indoor temperature fluctuates up and down, which is difficult. Maintained at a certain temperature.

Furthermore, for example, a heating conditioner used in a general home has a predetermined rated power, and therefore there is a problem that an input power is limited. Therefore, as the heat source installed in the heating conditioner, it must be designed within the rated power. In particular, when a flat heater is used as a heating conditioning mechanism, considering other heating conditioning mechanisms, it is difficult to rapidly heat the interior of the heating chamber with a desired power to perform heating conditioning.

The present disclosure is based on the provision of a heating conditioner that rapidly raises the indoor temperature of a heating chamber to a set temperature in a configuration that uses at least a planar heater as a heating conditioning mechanism to perform heating conditioning, and can maintain the indoor temperature at the set temperature. Topic.

A heating conditioner of the present disclosure includes a heating chamber to heat the object to be conditioned, and a planar heater provided on the top wall of the heating chamber, and an inner heater disposed directly above the central portion of the top wall. And a heat source that surrounds the outer heater of the inner heater and becomes a heat source; and the control unit controls the inner heater and the outer heater of the flat heater, respectively. The top wall of the heating chamber has a three-dimensional curved surface on the side of the heating chamber which will become a concave surface, and the entire surface of the planar heater is closely fixed to the top wall.

According to the present disclosure, since at least a planar heater is used as the heating conditioning mechanism, the indoor temperature can reach the set temperature in a short period of time, and the indoor temperature can be reliably maintained at the set temperature. Therefore, it is possible to provide a user capable of A heating conditioner that performs desired heating conditioning in a short time.

Form for Implementing the Invention The first aspect of the heating conditioner of the present disclosure includes: a heating chamber to heat the object to be conditioned; and a planar heater provided on the top wall of the heating chamber and disposed at the center of the top wall. The inner heater directly above the part and the outer heater surrounding the inner heater become a heat source; and the control unit controls the inner heater and the outer heater of the flat heater, respectively. The top wall of the heating chamber has a three-dimensional curved surface on the side of the heating chamber which will become a concave surface, and the entire surface of the planar heater is closely fixed to the top wall.

The first heating conditioner constructed in this way will use a planar heater as the heating conditioning mechanism, and the indoor temperature (top plate temperature) will reach the set temperature in a short time, and the indoor temperature (top plate temperature) ) A structure that is reliably maintained at a set temperature.

In the heating conditioner of the second aspect of the present disclosure, the three-dimensional curved surface of the top wall surface of the heating chamber in the first aspect has a rectangular plan view, and the curvature of the long side is different from the curvature of the short side. Composition is also possible.

In the heating conditioner according to the third aspect of the present disclosure, the top wall of the heating chamber in the first aspect may include a plurality of regions that absorb the expansion / contraction deformation force caused by the heat of the planar heater.

In the fourth aspect of the heating conditioner of the present disclosure, the top wall of the heating chamber in the first aspect has a plurality of regions that absorb the expansion / contraction deformation force caused by the heat of the planar heater, and the plurality of regions are respectively It is also possible to have the same shape.

In the fifth aspect of the heating conditioner of the present disclosure, the top wall of the heating chamber in the first aspect may have a plurality of polygonal shaped regions that absorb the expansion / contraction deformation force caused by the heat of the planar heater. .

In the heating conditioner of the sixth aspect of the present disclosure, the top wall of the heating chamber in the first aspect may include a plurality of honeycomb-shaped regions that absorb the expansion / contraction deformation force caused by the heat of the planar heater.

In the seventh aspect of the heating conditioner of the present disclosure, the planar heater of the first aspect may be configured to be held by a heat-insulating material by a pressing plate having a three-dimensional curved surface mounted with a movable range to the top wall. .

In the heating conditioner of the eighth aspect of the present disclosure, the pressing plate of the seventh aspect is formed in each area facing the inner heater and the outer heater so as to protrude in the direction of the inner heater and the outer heater. The pressing portion may be configured to press the inner heater and the outer heater through the heat insulating material by the pressing portion.

The ninth aspect of the heating conditioner of the present disclosure may have a configuration in which the total of the maximum heater outputs of the inner and outer heaters of the first aspect exceeds the rated power of the heating conditioner. The control unit is configured to control the power input to the inner heater so that the total output of the heaters of the inner heater and the outer heater does not exceed the rated power of the heating conditioner.

The heating conditioner according to the tenth aspect of the present disclosure may include a heater temperature detector for detecting a temperature of a region directly heated by the inner heater of the first aspect. The control unit is configured to perform control based on the heater temperature information detected by the heater temperature detector so as to raise the inner heater to a set temperature of the heating chamber (including the vicinity of the set temperature).

In the heating conditioner of the eleventh aspect of the present disclosure, at least the surface on the heater side of the top wall of the heating chamber of the first aspect may be configured to have a black silicon film.

In the heating conditioner of the twelfth aspect of the present disclosure, at least the heating chamber side surface of the top wall of the first aspect of the heating chamber may be configured to have a self-cleaning film.

Hereinafter, as an embodiment of the heating conditioner of the present disclosure, a heating conditioner using at least a planar heater as a heating conditioner will be described with reference to the drawings. The heating conditioner disclosed in the present disclosure is not limited to the configuration of the heating conditioner described in the following embodiment, and includes a heating conditioner equivalent to the technical idea described in the following embodiment. The embodiment described below is an example showing the present disclosure, and the structures, functions, operations, etc. shown in the embodiment are examples and are not intended to limit the present disclosure. Among the constituent elements of the following embodiments, constituent elements that are not described in the independent claim indicating the highest-level concept will be described as arbitrary constituent elements.

Hereinafter, the heating conditioner of this embodiment of this disclosure is demonstrated with reference to drawings. FIG. 1 is a perspective view showing an appearance of a heating conditioner according to this embodiment. FIG. 2 is a perspective view showing a state in which a door in the heating conditioner of the embodiment of FIG. 1 is opened.

As shown in FIGS. 1 and 2, the heating conditioner is configured such that a front opening of the heating chamber 4 provided inside the main body 1 can be opened and closed by a door 2. A handle 3 is provided at the upper end of the door 2, and a user will hold the handle 3 to rotate the door 2 to open and close the front opening of the heating chamber 4. The interior of the heating chamber 4 is substantially closed by the closing of the door 2, and the to-be-heated object, which is disposed inside the heating chamber 4, is heated and conditioned in the substantially closed state.

As shown in FIG. 1, on the front of the heating conditioner, a setting unit 5 is provided on the upper door 2 for setting various conditioning conditions, such as a setting temperature setting, a conditioning time setting, and the like of the heating condition. The setting unit 5 provided on the front of the heating conditioner includes a display portion that displays various conditioning conditions, heating conditions during heating conditioning, and the like.

As the heating conditioning mechanism in the heating conditioner of this embodiment, in addition to a flat heater, a microwave heating unit that heats food by irradiating microwaves, a steam heating unit that heats food by water vapor, and hot air in a heating chamber 4 internal circulation to heat food by a hot air circulation unit. The microwave heating unit is a structure in which an antenna for radiating microwaves is provided under the bottom wall of the heating chamber 4, and the microwave is radiated to the inside of the heating chamber 4 in a desired direction by an antenna having directivity. The steam heating unit has a water tank inside the main body 1, and the water is heated to a high temperature by a steam heater of a boiler, and the generated steam is concentratedly sprayed into the heating chamber 4. The hot air circulation unit has a configuration in which the air sucked by the heating chamber 4 is heated by a back surface heater provided on the back side of the heating chamber 4 and hot air is supplied to the inside of the heating chamber 4.

The heating conditioner of the present embodiment is provided with a plurality of heating conditioning mechanisms, and is a configuration in which a user selects a desired heating conditioning mechanism, or a user selects a conditioning content, and selects an appropriate heating conditioning mechanism. The user arranges food to be conditioned in the heating chamber 4 of the heating conditioner, and then closes the door 2 and sets a heating conditioning mechanism or conditioning content in the setting unit 5 and presses the start button to start the conditioning operation.

As shown in FIG. 2, the heating conditioner of the present embodiment is configured to be capable of accommodating a heating plate 6 capable of placing an object to be heated inside the heating chamber 4. The side walls on both sides of the heating chamber 4 are formed to allow the heating plate 6 to slide, and can support the drop of the heating plate 6 so that the heating plate 6 can be arranged in the upper layer, the middle layer, or the lower layer inside the heating chamber 4. A heating body (not shown) is embedded in the mounting surface 33 of the heating plate 6. The heating element is a person that absorbs microwaves and generates heat, and uses ferrite.

Furthermore, in this embodiment, an example has been described in which ferrite is embedded in the heating plate 6 as a heating body, but as long as the heating body is a person that absorbs microwaves and generates heat, the heating body is coated on the heating plate. It can be constructed on the back. In addition, as the main material of the heating plate 6, any material having excellent heat conduction may be used, and it may be made of metal or ceramic.

In the present embodiment, the configuration in which the heating plate 6 is supported by the drop in the side wall of the heating chamber 4 has been described, but it may be a structure in which the top wall is suspended, or the heating plate 6 is provided to protrude from The lower leg part is configured to be placed on the bottom wall of the heating chamber 4.

An antenna (not shown) for radiating microwaves into the heating chamber 4 is disposed directly below the center of the bottom wall of the heating chamber 4. The antenna of this embodiment has a structure that has directivity in a radiation direction of microwaves and can circulate a circular polarized wave directly above the antenna. Therefore, the antenna in this embodiment is provided with a rotation mechanism capable of radiating microwaves evenly toward the inside of the heating chamber 4, and the radiation opening of the antenna is configured to be rotatable. In addition, the antenna in this embodiment is configured so that the heating element of the heating plate 6 disposed directly above the antenna also emits circularly polarized waves for dielectric heating.

The bottom wall of the heating chamber 4 is formed of a microwave-transmittable material from the antenna, and the other wall surfaces of the heating chamber 4 namely the side wall, the back wall, and the top wall are aluminum plating using iron steel or stainless steel (SUS). Steel plate. Further, a non-adhesive coating layer such as a fluororesin or a silicone resin may be formed on each wall surface. By forming such a coating layer, it is possible to prevent the adhesion of dirt such as grease components and conditioning chips scattered during conditioning, and to easily wipe off the dirt even if there is dirt attached. Furthermore, a coating layer having a self-cleaning function for decomposing the grease components scattered during conditioning by heating during conditioning can be formed on each wall surface of heating chamber 4. As a method for providing the coating layer with a self-cleaning function, for example, a method in which a manganese oxide-type catalyst species that promotes oxidative decomposition and the like is compounded in the coating layer can be used. Platinum or palladium with high activity in the medium and high temperature range. Furthermore, a method of adding cerium or the like having an adsorption effect may be used.

As described above, although the object to be heated (food) placed on the heating plate 6 housed inside the heating chamber 4 is heated to a high temperature heating plate 6 by the heat of a heating body dielectrically heated by microwaves, Heating conditioning, but in this embodiment, it has the structure which heats the upper surface of the to-be-heated object (food) mounted on the heating pan 6 by the planar heater unit 8 provided in the upper part of the ceiling wall of the heating chamber 4.

FIG. 3 is a perspective view showing a state where an outer cover of the main body 1 of the heating conditioner according to the embodiment is removed. As shown in FIG. 3, a planar heater unit 8 is provided on the top side of the body 1 of the heating conditioner, that is, a portion including the top wall of the heating chamber 4. Fig. 4 is a front view showing the upper side of the heating conditioner of the embodiment in a cross section. As shown in FIG. 4, the upper part of the heating chamber 4 showing the heating conditioner is constituted by a flat heater unit 8. As an indoor temperature detecting device for detecting an indoor temperature inside the heating chamber 4, the indoor temperature detecting section 9, such as a thermistor, is provided in a corner portion inside the right side of the heating chamber 4. The indoor temperature information detected by the indoor temperature detecting section 9 is transmitted to a control section 7 (see FIG. 18) described later, and is used for controlling various heating conditioning operations. [Flat heater unit]

FIG. 5 is an exploded perspective view showing the planar heater unit 8 in an exploded state. As shown in FIG. 5, the flat heater unit 8 starts from the lower side of FIG. 5, and includes a heating chamber upper plate 10 constituting a top wall of the heating chamber 4, and planar heating that is in close contact with the upper surface of the heating chamber upper plate 10. Device 11, pressing tool 12 formed of mica as a pressure plate, first heat insulating material 13 for blocking heat conduction from the plane heater 11 upward, and pressing the plane heater 11 to the heating chamber through the first heat insulating material 13 The pressing plate 14 of the upper plate 10. In addition, the planar heater unit 8 is provided with an insulating sheet 15 that electrically insulates the terminal portion 24 (see FIG. 16) of the planar heater 11 and blocks the heat of the planar heater unit 8 from being transmitted to the outer cover of the body 1. The heat shielding plate 16 and the second heat insulating material 17. In this way, the flat heater unit 8 has a stacked assembly structure, and during maintenance, all parts can be replaced, and maintenance performance can be improved. Furthermore, the planar heater unit 8 is provided with a heater temperature detecting unit 18 which is a heater temperature detecting mechanism that detects a temperature of a heating area directly heated by the planar heater 11. Hereinafter, each component in the planar heater unit 8 will be described in detail. [Heating chamber upper plate]

FIG. 6 is a view showing a heating chamber upper plate 10 constituting a ceiling wall of the heating chamber 4 in the planar heater unit 8. FIG. 6A is a plan view of the upper plate 10 of the heating chamber. FIG. 6B is an end view of line 6B-6B in the upper plate 10 of the heating chamber shown in FIG. 6A. FIG. 6C is an end view of line 6C-6C in the upper plate 10 of the heating chamber shown in FIG. 6A.

The heating chamber upper plate 10 is a person constituting the top wall of the heating chamber 4, and a central portion other than the outer periphery of the heating chamber upper plate 10 has a rectangular shape (10a) in a plan view. This rectangular shape has a curved surface shape in which the heating chamber side (lower side) becomes a concave surface, and becomes a heat generating region 10 a in which the planar heater 11 is closely arranged. The heating chamber 4 in this embodiment has a rectangular parallelepiped shape with the front side becoming a long side, and the heating area 10 a covers a slightly entire surface of the top wall of the heating chamber 4. A rectangular planar heater 11 corresponding to the shape of the heating chamber 4 is arranged on the entire surface in close contact with the heat generating area 10 a having a curved shape. Therefore, substantially the entire surface of the heating chamber upper plate 10 constituting the top wall of the heating chamber 4 becomes a heating body heated by the flat heater 11.

As shown in the end view of FIG. 6B, the cross-section in the long-side direction (the left-right direction in FIG. 6A) of the heating region 10a of the upper plate 10 of the heating chamber is formed by a curve. Similarly, as shown in the end view of FIG. 6C, the cross-section in the short-side direction (upper and lower directions in FIG. 6A) of the heating region 10a of the upper plate 10 of the heating chamber is also formed by a curve. Therefore, the heating area 10a of the heating chamber upper plate 10 has a three-dimensional curved surface that becomes a concave surface on the heating chamber side. In this embodiment, the curvature of the curve in the long-side direction of the heating region 10a is different from the curvature of the curve in the short-side direction of the heating region 10a, and the curvature in the long-side direction is greater than the curvature in the short-side direction. Not limited to this, the curvature in the long side direction of the heat generating region 10a may be smaller than the curvature in the short side direction.

As shown in the plan view of FIG. 6A, in the heating chamber upper plate 10, the heat generating area 10a in which the planar heater 11 is closely arranged is provided with a plurality of regular hexagonal shapes (honeycomb shapes) (honeycomb areas) 10b. In this embodiment, the boundary of the honeycomb region 10b in the heating chamber upper plate 10 is formed by a groove protruding from the heating chamber side, and each honeycomb region 10b has substantially the same area. The heating chamber upper plate 10 configured as described above is formed by press working.

The heating region 10a of the heating chamber upper plate 10 as described above is formed by having a plurality of honeycomb regions 10b. Therefore, although the heating area 10a expands due to the heat of the flat heater 11 or shrinks when the flat heater 11 is in the closed state where the power is blocked, the expansion / contraction deformation in this direction occurs at all times. The force can be absorbed in each of the honeycomb regions 10b. Although the heat generating area 10a is heated by the close plane heater 11, the entire surface of the heat generating area 10a is not evenly heated by the plane heater 11, and the heat distribution of the heat generating area 10a becomes uneven. Therefore, there is a possibility that the deformation force of the expansion / contraction in the heat generating region 10a becomes different in each region. If the top wall of the heating chamber 4, that is, the upper plate of the heating chamber, is flat and there is no area that can absorb the deformation force of expansion / contraction, the top wall will be locally heated and deformed and distorted unevenly. A gap is formed between the plate and the planar heater, and a structure in which heat from the planar heater is difficult to transfer is formed.

In the heating conditioner of this embodiment, a plurality of regions (honeycomb regions) 10b are formed in the heating region 10a of the upper plate 10 of the heating chamber, which are separated by grooves. Therefore, the expansion / contraction deformation force will be dispersed and absorbed by each of these honeycomb regions. On the top wall, the heating region 10a will not have a large local deformation and distortion, and the curved surface shape that becomes a concave surface on the heating chamber side will become smooth overall Uplifted state. As a result, the heat generating region 10a is maintained in a state of being in close contact with the planar heater 11 and becomes a person who can efficiently and reliably receive heat from the planar heater 11.

As described above, in this embodiment, since the heating area 10a of the upper plate 10 of the heating chamber can be prevented from being locally deformed, and the entire heating area 10a can be maintained in the same shape as a whole, the flat heater can be reliably maintained. 11 is in a state of being in close contact with the heat generating area 10a.

In addition, in this embodiment, although the configuration is described by using a plurality of regular hexagonal (honeycomb) honeycomb regions 10b to separate the heating region 10a of the heating chamber upper plate 10, the region 10b is not a honeycomb The shape is specified as long as it is constituted by a plurality of regions capable of dispersing and absorbing local expansion / contraction deformation forces of the heat generating region 10a. As a plurality of regions that absorb the deformation force of expansion / contraction, it is also possible to respond by using polygonal shaped regions such as triangles and four corners, or regions formed by curves.

In the heating chamber upper plate 10 of this embodiment, a pressing plate locking portion 10c for arranging a later-described pressing plate 14 in a floating direction is provided at a position slightly in the center of the heating chamber upper plate 10. The pressing plate locking portion 10c is provided with a locking screw 19, ie, a shoulder screw, to which the pressing plate 14 is attached. In addition, a plurality of fixtures 10d are provided on the upper plate 10 of the heating chamber so as to closely mount the flat heater 11 thereon. The fixture 10d is a small piece protruding from the upper surface of the heat generating area 10a, and is a piece that fixes a bendable plate to the upper surface of the heat generating area 10a.

The heating chamber upper plate 10 of this embodiment is an aluminum-plated steel plate using iron steel or stainless steel (SUS). On both surfaces of the heating chamber upper plate 10, black film bodies made of, for example, silicone resin are formed. By forming the black film body on the surface on the side of the flat heater in this way, it is possible to efficiently absorb heat from the flat heater 11. Furthermore, in the present embodiment, a coating layer having a self-cleaning function for decomposing the oil and fat components scattered during conditioning by heating during conditioning is formed on the heating chamber side surface of the heating chamber upper plate 10. The method of forming the coating layer having a self-cleaning function is omitted here because it has already been described above. Furthermore, in this embodiment, a coating layer having a self-cleaning function is also formed on both side walls and the back wall of the heating chamber 4. [Flat heater]

FIG. 7 is an exploded perspective view showing the flat heater 11 which is closely packed and installed in the heat generating area 10 a of the upper plate 10 of the heating chamber. As shown in FIG. 7, the heater 25, which is a heat source of the flat heater 11, is divided into an inner heater (inner heater) 20 and an outer heater (outer heater 21). FIG. 8 is a plan view showing a heat source, that is, a heater 25 including an inner heater 20 and an outer heater 21. The inner heater 20 and the outer heater 21 are disposed substantially on the same plane. The outer heater 21 is disposed so as to surround the inner heater 20 and is individually driven and controlled. In the present embodiment, the inner heater 20 is configured to be steplessly variable within a range of 300W to 900W, and the outer heater 21 is configured to be turned on and off by 700W.

The inner heater 20 and the outer heater 21 are formed by winding a heating wire on an insulating plate, which is mica. By making a conventional 650W heater output 900W, the heater output per unit area is increased by 1.6 times. In this embodiment, for example, it is a structure which can reach the heater output of 3.0 W / cm <^2> (inside heater). In this embodiment, a belt-shaped heating wire having a thickness of 0.144 mm is used as the heating wire of the inner heater 20, and a belt-shaped heating wire having a thickness of 0.10 mm is used as the heating wire of the outer heater 21. By forming the heating wire with high density, it is possible to average the temperature rise of the upper plate 10 in the heating chamber.

As shown in FIG. 7, the flat heater 11 is a mica sheet of two sheets of the upper insulating material 22 and the lower insulating material 23, which are sandwiched on both sides and constituted as a heat source by the inner heater 20 and the outer heater 21. The heater 25 is formed. FIG. 9 is a plan view of the flat heater 11 and shows the upper insulating material 22. FIG. 10 is a rear view of the flat heater 11 and the lower insulating material 23 is shown.

As shown in FIG. 9 and FIG. 10, the upper insulating material 22 and the lower insulating material 23 are separated by slits 22 a and 23 a between the heating lines of the inner heater 20 and the outer heater 21. . Therefore, in a region where the upper insulating material 22 and the lower insulating material 23 are heated by the heating wires of the inner heater 20 and the outer heater 21, heat transfer from other regions is blocked. The effect of the separation by the slits 22a and 23a is that it can prevent the adhesion of the upper plate 10 of the heating chamber due to mutual expansion when the inner heater 20 and the outer heater 21 are simultaneously energized. Furthermore, the upper insulating material 22 and the lower insulating material 23 sandwiching the heater 25 are each formed with a pressing plate locking portion 10c and a plurality of fixtures 10d provided on the heating chamber upper plate 10 and inserted therein. Openings 22b, 23b. The planar heater 11 has a terminal portion 24, and terminals connected to the heating wires of the inner heater 20 and the outer heater 21 are provided in the terminal portion 24.

FIG. 11 is a perspective view showing a state where a planar heater 11 is mounted on the upper surface of the heating chamber upper plate 10. As shown in FIG. 11, the planar heater 11 is closely mounted on the heating area 10 a of the curved surface of the upper plate 10 of the heating chamber. The fixture 10d formed on the upper plate 10 of the heating chamber is bent, and the planar heater 11 is tightly installed at a predetermined position on the heat generating area 10a. At this time, the fixture 10d of the upper plate 10 of the heating chamber will be bent through the openings (22b, 23b) formed to penetrate the planar heater 11 up and down, and the holes of the pressing tool 12 formed by the mica as the pressure plate, and will be bent. The planar heater 11 is closely mounted on the upper surface of the heat generating area 10a. In addition, a center plate pressing plate locking portion 10c of the heating chamber upper plate 10 is disposed in an opening (22b, 23b) formed in the center of the flat heater 11. [First heat insulation material]

As shown in FIG. 5, a first heat insulating material 13 is provided to cover the planar heater 11. The first heat insulating material 13 has a function of blocking heat from the upper surface of the flat heater 11 and is formed of, for example, glass wool. The first heat insulating material 13 has a shape that can cover at least the entire heating area 10 a of the heating chamber upper plate 10, has a substantially same thickness, and has an elastic force (restoring force) at least in the thickness direction.

As shown in FIG. 5 described above, a plurality of openings are formed in the first heat insulating material 13. The opening formed in the center of the first heat insulating material 13 is an opening 13 a for a locking portion that can accommodate the pressing plate locking portion 10 c protruding from the heating chamber upper plate 10. In addition, the first heat insulating material 13 includes a fixture opening 13b for accommodating the fixture 10d provided on the heating plate 10, a terminal opening 13c through which the heating wire of the flat heater 11 passes, and a detectable opening 13c. A temperature detection opening 13d accommodated in a detection end portion 18a (see FIG. 15) of the heater temperature detection unit 18, which is a heater temperature detection device of a temperature of a heating area directly heated by the planar heater 11 described later. [Press board]

FIG. 12 is a diagram showing a pressing plate 14 that covers the upper portion of the first heat insulating material 13 and is installed on the heating chamber upper plate 10. FIG. 12A is a plan view of the pressing plate 14. FIG. 12B is an end view of line 12B-12B of the pressing plate 14 shown in FIG. 12A. FIG. 12C is an end view of line 12C-12C of the pressing plate 14 shown in FIG. 12A.

As shown in FIG. 12, the pressing plate 14 mounted on the heating chamber upper plate 10 is formed with a curved surface region 14 a having the same curved surface as the heating region 10 a formed with a curved surface of the heating chamber upper plate 10. The pressing plate 14 has a function of pressing the flat heater 11 against the heat generating area 10 a of the upper plate 10 of the heating chamber through the first heat insulating material 13, and makes the entire surface of the flat heater 11 closely contact the heat generating area 10 a without a gap. In the pressing plate 14, a pressing portion 14 b is formed at a position facing the inner heater 20 and the outer heater 21 of the flat heater 11. The pressing portion 14 b is formed as a continuous convex portion protruding from the plane heater 11 side, and presses the inner heater 20 and the outer heater 21 of the plane heater 11 through the first heat insulating material 13. As described above, since the pressing portion 14 b is formed on the pressing plate 14, the rigidity as the pressing plate 14 is improved. In addition, if there is a portion with poor adhesion, improvement can be achieved by providing the pressing portion 14b in this portion, and the average temperature of the upper plate 10 of the heating chamber can be increased.

As shown in the end view of FIG. 12B, the cross-section in the long-side direction (left-right direction in FIG. 12A) of the curved area 14a of the pressing plate 14 is substantially formed by a curve. Similarly, as shown in the end view of FIG. 12C, the cross-section in the short-side direction (upper-lower direction in FIG. 12A) of the curved area 14a of the pressing plate 14 is also substantially formed by a curve. Therefore, the curved area 14a of the pressing plate 14 has a three-dimensional curved surface on which the heating chamber side (lower side) becomes a concave surface. In this embodiment, the curvature of the curve in the long-side direction of the curved area 14a is different from the curvature of the curve in the short-side direction of the curved area 14a, and the curvature in the long-side direction is smaller than the curvature in the short-side direction. Not limited to this, the curvature in the long side direction of the curved area 14a may be larger than the curvature in the short side direction. As described above, the curved area 14 a of the pressing plate 14 has the same curved surface as the heating area 10 a of the heating chamber upper plate 10.

Further, as shown in FIG. 12A, a locking portion mounting hole 14c is formed in the center of the pressing plate 14, and the locking portion mounting hole 14c can be used to press against the pressing plate locking portion provided on the upper plate 10 of the heating chamber. 10c The bolt portion 19c (see FIG. 13) of the locking fixture (with shoulder screw) 19 to be screwed is penetrated.

FIG. 13 is a view of the pressing plate locking portion 10c of the upper plate 10 of the heating chamber screwed with the shoulder screw 19, which is a locking device, and the pressing plate 14 is installed in a floating manner with respect to the upper plate 10 of the heating chamber. Method to illustrate the cross section. In FIG. 13, (a) shows the state where the shoulder screw 19 is screwed onto the pressing plate locking portion 10c, and (b) shows the state where the shoulder screw 19 is screwed onto the pressing plate locking portion 10c. status. As shown in FIG. 13, the shoulder screw 19 includes a head portion 19 a, a cylindrical portion 19 b, and a bolt portion 19 c. The diameter of the cylindrical portion 19 b is larger than the diameter of the bolt portion 19 c.

As shown in FIG. 13 (a), when the shoulder screw 19 is screwed onto the pressing plate locking portion 10 c, the head 19 a of the shoulder screw 19 comes into contact with the pressing plate 14. In the configuration of this embodiment, as shown in FIG. 13 (a), after the head 19a of the shoulder screw 19 abuts against the pressing plate 14, only a predetermined distance is screwed in, and the cylindrical portion 19b of the shoulder screw 19 The pressing plate locking portion 10c abuts against the upper plate 10 of the heating chamber, and the shoulder screw 19 is screwed to the pressing plate locking portion 10c to complete the installation.

FIG. 14 shows a state where the heating conditioner 10a expands and bulges when the heating conditioner 10a is heated to a high temperature by the planar heater 11 when the heating conditioner is used. As shown in FIG. 14, even if the heat generating area 10 a expands and bulges, the cylindrical portion 19 b of the shoulder screw 19 can slide upward inside the locking portion mounting hole 14 c of the pressing plate 14. Therefore, even if the heat generating area 10 a expands and bulges, the pressing plate 14 will not be lifted upwards in the same way, and the flat heater 11 will maintain the state where the heat generating area 10 a is constantly pressed by the pressing plate 14 with a predetermined pressure or more. . As described above, in the heating conditioner of this embodiment, the planar heater 11 is often pressed by the pressing plate 14 against the heating area 10a. Therefore, the planar heater 11 can be kept in close contact with the heating area 10a during the conditioning operation. Of the state.

As shown in a plan view of the pressing plate 14 of FIG. 12A, the temperature detecting installation portion 14 d and the terminal installation portion 14 e are provided on the pressing plate 14. The temperature detection installation portion 14d is a portion that can be installed with a heater temperature detection portion 18 that detects a temperature of an area directly heated by the heat from the flat heater 11, such as a thermistor. The terminal installation portion 14 e may be provided with a terminal portion 24 including terminals of the inner heater 20 and the outer heater 21 of the flat heater 11. Each terminal of the terminal section 24 is connected to a power supply section that is driven and controlled by the control section 7 of the heating conditioner.

15 is an enlarged sectional view showing a state in which a heater temperature detection unit 18 (thermistor) is mounted on the temperature detection mounting unit 14d of the pressing plate 14. The cross-sectional view shown in FIG. 15 is an enlarged display of the area indicated by the symbol XV in FIG. 4. As shown in FIG. 15, the detection end portion 18 a of the heater temperature detection portion 18 is disposed inside the temperature detection opening 13 d formed in the first heat insulating material 13. The temperature detection opening 13d forms a heating area (heating space) directly heated by the flat heater 11. Therefore, the detection end portion 18 a of the heater temperature detection portion 18 is disposed in a heating area (heating space) directly heated by the flat heater 11. In this embodiment, the heating area (heating space) is formed directly above the inner heater 20 of the planar heater 11 and is directly heated by the inner heater 20. The heater temperature detection unit 18 detects the temperature of the heating area directly heated by the inner heater 20, and therefore, based on the heater temperature information and the indoor temperature from the indoor temperature detection unit 9 that detects the temperature inside the heating chamber 4 Information, the control unit 7 drives and controls the heat sources of various heating conditioning mechanisms of the heating conditioner used in the planar heater 11 and the like.

16 is a perspective view showing a planar heater unit 8 in which a planar heater 11, a first heat insulating material 13, a pressing plate 14 and the like are mounted on the heating chamber upper plate 10. As shown in FIG. 16, the flat heater unit 8 is provided with a pressing plate 14 to cover the heat generating area 10 a of the upper plate 10 of the heating chamber.

FIG. 17 is a diagram showing the planar heater unit 8. FIG. 17A is a plan view showing the planar heater unit 8. FIG. 17B is a sectional view taken along line 17B-17B in the planar heater unit 8 shown in FIG. 17A. FIG. 17C is a sectional view taken along line 17C-17C in the planar heater unit 8 shown in FIG. 17A.

As shown in FIG. 17, the planar heater unit 8 is substantially integrated, and the top wall of the heating chamber 4 is configured by the planar heater unit 8. As shown in the cross-sectional view of FIG. 17B, the cross-section in the long-side direction (left-right direction in FIG. 17A) of the flat heater unit 8 is a curved surface having substantially the same thickness (length in the up-down direction). Similarly, as shown in the cross-sectional view of FIG. 17C, the cross-section of the flat heater unit 8 in the short-side direction (the up-down direction in FIG. 17A) is also formed by a curved surface having substantially the same thickness (length in the up-down direction). Therefore, the planar heater unit 8 has a three-dimensional curved surface that becomes a concave surface on the heating chamber side (lower side) as a whole. In the cross-sectional view shown in FIG. 17B, the area surrounded by the symbol A shows a portion where the shoulder screw 19, which is the locking device shown in FIG. 13 and FIG. 14, is screwed. [Heating control]

In the heating conditioner of this embodiment, as the other heating conditioning mechanism of the planar heater unit 8 configured as described above, a microwave heating unit is provided, which is provided with a magnetron that forms a microwave. The microwave passes through the waveguide and is radiated from the antenna. The antenna that radiates microwaves to the heating chamber 4 is arranged below the bottom wall of the heating chamber 4 and has a structure that radiates microwaves such as circularly polarized waves to the heating chamber 4 from below. In addition, the antenna has a structure capable of radiating microwaves having directivity, and has a structure in which the inside of the heating chamber 4 can be evenly heated by rotating the antenna.

In addition, as other heating conditioning mechanisms of the heating conditioner of this embodiment, a steam heating unit for injecting water vapor into a heating chamber for heating conditioning is provided, and hot air is circulated inside the heating chamber 4 for heating conditioning. Hot air circulation unit for food. The steam heating unit has a water tank inside the main body 1, and the water is heated to a high temperature by a steam heater of a boiler, and the generated steam is concentratedly sprayed into the heating chamber 4. The hot air circulation unit has a configuration in which the air sucked by the heating chamber 4 is heated by a back surface heater provided on the back side of the heating chamber 4 and hot air is supplied to the inside of the heating chamber 4.

As described above, as the heating conditioning mechanism of the heating conditioner of this embodiment, a planar heater unit 8, a microwave heating unit, a steam heating unit, and a hot air circulation unit are provided, and each heating conditioning mechanism is selected according to the conditioning content, and it is determined as In some cases, a plurality of heating and conditioning mechanisms are driven simultaneously or in combination. In this embodiment, the heating control performed by the planar heater unit 8 will be mainly described.

As shown in FIG. 15 described above, the detection end portion 18 a of the heater temperature detection portion 18 is housed inside the temperature detection opening 13 d formed in the first heat insulating material 13, and the detection end portion of the heater temperature detection portion 18 18a is arranged in a heating area (heating space) directly heated by the heater 20 inside the flat heater 11. The heater temperature detection unit 18 detects the temperature of the space directly heated by the inner heater 20, and transmits the detected temperature to the control unit 7 as heater temperature information (see FIG. 18). The control unit 7 is a heat source that controls the heating conditioning operation according to the conditioning content set by the user based on the heater temperature information and the indoor temperature information from the indoor temperature detection unit 9 from the detected indoor temperature of the heating chamber 4. And drive source.

In this embodiment, since the heater temperature detecting section 18 detects the temperature of the heating area (heating space) directly heated by the inner heater 20, the control section 7 can detect the temperature from the heater temperature detecting section 18 with high accuracy. The heater temperature information controls the temperature of the heating conditioning operation performed by the inner heater 20. In this embodiment, as will be described later, since the inside heater 20 having a large heater output is used to perform a rapid heating operation for rapidly increasing the temperature of the heating chamber 4, the heater temperature information is changed during this rapid heating operation. very effective.

As explained in the aforementioned [Inventive Content] field, in the conventional heating conditioner, a structure for performing on / off control of the flat heater based on the detected indoor temperature so that the interior of the heating chamber becomes a set temperature . Therefore, in the conventional heating conditioner, the flat heater is temporarily turned off before the indoor temperature reaches the set temperature, and the on and off operation of the flat heater is repeated thereafter, thereby gradually increasing the indoor temperature. Ground close to the set temperature. Therefore, it is difficult to use a flat heater to accurately set the indoor temperature to a set temperature, and it takes time to reach the set temperature.

The heating conditioner of this embodiment has a configuration in which the control unit 7 performs temperature control in the heating conditioning operation based on the heater temperature information and the room temperature information from the heater temperature detection unit 18. In particular, in a rapid heating operation that rapidly increases the temperature of the heating chamber 4 and reaches a set temperature in a short time, the control operation is performed based on the heater temperature information showing the temperature of the heating area heated by the inner heater 20 Composition. Therefore, the control unit 7 can rapidly heat the temperature of the heating area heated by the inner heater 20 to a set temperature, and can rapidly increase the indoor temperature of the heating chamber 4. As will be described later, the inner heater 20 in this embodiment has a configuration that can control the input current to a desired value, and can output the heater to a desired value. Therefore, after the indoor temperature reaches the set temperature, the control unit 7 can control the input current of the inner heater 20 based on the indoor temperature information and the heater temperature information, so that the indoor temperature can be maintained at the set temperature with high accuracy. As a result, in the heating conditioner of this embodiment, the time until the indoor temperature reaches the set temperature can be greatly shortened, and the indoor temperature can be maintained at the set temperature for a predetermined time with high accuracy. [Heating conditioning action]

FIG. 18 is a part of a circuit diagram for controlling a heating conditioning mechanism in the heating conditioner of this embodiment. As the heat source of the heating conditioning mechanism of the heating conditioner of this embodiment, there are the inner heater 20 and the outer heater 21 in the flat heater unit 8, the steam heater 26 in the steam heating unit, and the back heating in the hot air circulation unit. Heater 27 and a magnetron 28 in a microwave heating unit (see FIG. 18). In the hot air circulation unit, a circulation fan motor 29 is used.

As shown in the circuit diagram of FIG. 18, in order to control the opening and closing of the inner heater 20, the outer heater 21, the steam heating gas 26, the back heater 27, and the circulation fan motor 29, these are connected to respective corresponding switching elements. . In addition, the magnetron 28 that is a microwave generating device in the microwave heating unit is connected to an inverter circuit that is a driving power source. In the present embodiment, the driving control of the inner heater 20 uses a triac 30 as a switching element, and has a configuration capable of controlling the current input to the inner heater 20 to a desired value. In the outer heater 21, a relay 31 is used as a switching element that simply switches on / off. In this embodiment, the outer heater 21 is described using a relay 31 as a switching element that simply switches on / off, but a bidirectional triode may be used in the same way as the inner heater 20 A configuration in which the input power can be controlled steplessly as a switching element.

The heating conditioner has a rated power determined in advance, and power higher than this rated power cannot be used. The heating conditioner of this embodiment has a structure in which heating conditioning can be performed by using a plurality of heating conditioning mechanisms, and is controlled by the control unit 7 so that the power consumption of the heat source to be started is always within the rated power. In particular, the planar heater unit 8 of the heating conditioner of the present embodiment performs characteristic control.

Although the heater 25 of the planar heater unit 8 uses the inner heater 20 and the outer heater 21 to form a heat source, in this embodiment, the maximum heater output of the inner heater 20 is, for example, 900 W. The maximum output is, for example, 700W. Therefore, the total of the maximum heater outputs of the inner heater 20 and the outer heater 21 exceeds the rated power of a general household (1500W = 15A (rated current) × 100V). As shown in FIG. 18, the heating conditioner of this embodiment has a structure in which the inner heater 20 is driven and controlled by a bidirectional triode 30 as a switching element. Therefore, the inner heater 20 can be driven by a heater output that can be infinitely variable in the range of 300 to 900 W by inputting a control signal of the bidirectional triode 30.

Hereinafter, a specific heating conditioning operation using the heating conditioning mechanism in the heating conditioner of this embodiment will be described by way of example.

When the heating chamber 4 is heat-conditioned by using only the flat heater unit 8 with a slightly entire surface of the top wall as a heating element, for example, by driving the inner heater 20 of the flat heater 11 to a heater output of 700 W, By setting the outer heater 21 as a heater output of 700 W as the on state, the heating chamber 4 can be heated by a total of 1400 W heater outputs of the planar heater 11.

When using the planar heater unit 8 and the microwave heating unit to heat the heating chamber 4 with microwaves from the top and bottom surfaces, for example, the inner heater 20 of the planar heater 11 is 900 W. The maximum heater output is set to the off state (0W) of the outer heater 21, and the heater output of the total of 900W from the flat heater 11 above is used to heat the heating chamber 4. On the other hand, in a microwave heating unit used as another heating and conditioning mechanism, as the power consumption of the magnetron 28 and the like, for example, 450 W can be used to heat the heating plate 6 stored in the heating chamber 4 to heat the conditioning and placing Food for heating dish 6.

As another example, the outside heater 21 can be turned off (0W), the inside heater 20 can be used as a 430W heater output, and 550W can be used as the heating power of the magnetron 28 of the microwave heating unit for heating. The food placed on the heating pan 6 is prepared. As mentioned above, even when using the flat heater 8 and the microwave heating unit for heating conditioning, the desired conditioning action can be performed with the power consumption of the general household's rated power (1500W = 15A (rated current) × 100V) .

In the heating conditioner of this embodiment, the central portion of the heating chamber 4 can be heated centrally by using the planar heater unit 8 and the microwave heating unit. In the planar heater 11, the heater output per unit area is 1.6 times by making the heater output of 650W conventionally 900W. In particular, the inner heater 20 is configured to have a higher heater output than the outer heater 21. Therefore, in the configuration of this embodiment, since the central portion of the top wall surface of the heating chamber 4 can be rapidly heated by the inner heater 20 having a large heater output, the central portion of the top wall surface becomes a heating element, and the heating element The central portion of the heating chamber 4 can be radiated in a concentrated manner. In addition, by heating the heating wire at a high density, it is possible to uniformize the temperature rise of the upper plate 10 of the heating chamber.

On the other hand, the configuration of the present embodiment has a configuration in which microwaves (circular polarized waves) can be collectively radiated toward the central portion of the heating chamber 4 from the antenna of the microwave heating unit from below the heating chamber 4. A heating plate 6 capable of placing food, that is, a food to be heated, is housed inside the heating chamber 4, and a heating body that absorbs microwaves and generates heat is embedded in the mounting surface 33 of the heating plate 6. As a result, the food on the mounting surface of the heating plate 6 is heated by the microwave heating unit, the heating plate 6 heated by the heating element is heated from below, and the central portion of the top wall is heated by the planar heating unit 8, so that The upper part is heated centrally by receiving heat radiation from the central part. That is, in the heating conditioner of this embodiment, the food stored in the heating pan 6 of the heating chamber 4 can be heated rapidly from the top and the bottom to a high temperature.

FIG. 19 is a perspective view showing a heating pan 6 used in the heating conditioner of the present embodiment. FIG. 20 is a plan view of the heating pan 6 shown in FIG. 19. As shown in FIGS. 19 and 20, the plan view has a rectangular shape and has a flange shape that expands outward in the outer edge portion 34. A central portion surrounded by the outer edge portion 34 is concave, and a bottom surface thereof becomes the mounting surface 33. The mounting surface 33 has an uneven shape. The concave-convex shape on the mounting surface 33 is formed alternately with a valley portion and a peak portion which are inclined with respect to the left-right direction of the mounting surface 33 (the left-right direction of the heating conditioner). In this embodiment, the valley portion and the peak portion of the oblique line are extended to have an angle of approximately 45 degrees with respect to the left-right direction.

In addition, an area boundary mark 32 showing a rectangular shape is provided at a central portion of the mounting surface 33 of the heating plate 6. The inside of the area boundary mark 32 is the fast heating area B, which shows the area where the object to be heated is rapidly heated and conditioned by using the microwave heating performed by the inside heater 20 of the planar heater unit 8 and the microwave heater unit. . Therefore, the user can place the food to be conditioned on the rapid heating area B inside the area boundary mark 32 in the heating pan 6 to perform rapid heating conditioning. In addition, as the area boundary mark 32, any configuration may be used as long as it is convex, concave, or printed, and can be easily confirmed visually and tactually.

As described above, the heating conditioner of this embodiment has a configuration in which heating conditioning is performed using at least a planar heater as a heating conditioning mechanism. While the indoor temperature can be quickly raised, the indoor temperature (heating) can also be increased. The chamber upper plate temperature) is maintained at a constant temperature.

Since the heating conditioner of this embodiment can set the indoor temperature (the upper temperature of the heating chamber) to a set temperature with high accuracy, and can shorten the time until the indoor temperature reaches the set temperature, it has a structure that can shorten the conditioning time.

Furthermore, although the heating conditioner of this embodiment, especially a heating conditioner for general household use, although it has a predetermined rated power, it has a plurality of power devices that use a total of power consumption exceeding the rated power, and can be used. A structure in which the desired high thermal power rapidly heats the interior of the heating chamber to rapidly heat the conditioning. Industrial availability

The heating conditioner of the present disclosure has a structure that can quickly raise the indoor temperature to a desired temperature, and can shorten the conditioning time, and can be a high-value conditioning device.

1‧‧‧ Ontology

2‧‧‧ gate

3‧‧‧handle

4‧‧‧ heating chamber

5‧‧‧Setting Department

6‧‧‧ heating dish

7‧‧‧Control Department

8‧‧‧ flat heater unit

9‧‧‧Indoor temperature detection department

10‧‧‧ Upper plate of heating chamber (top wall)

10a‧‧‧heating area

10b‧‧‧ hive area

10c‧‧‧Press plate locking part

10d‧‧‧Fixture

11‧‧‧ flat heater

12‧‧‧Press

13‧‧‧The first insulation material

13a‧‧‧ opening for locking part

13b‧‧‧Opening for fixture

13c‧‧‧Terminal opening

13d‧‧‧Opening for temperature detection

14‧‧‧Pressing plate

14a‧‧‧ surface area

14b‧‧‧Pressing section

14c‧‧‧Mounting hole

14d‧‧‧Temperature detection installation department

14e‧‧‧Terminal Installation Department

15‧‧‧Insulation sheet

16‧‧‧heat shield

17‧‧‧The second insulation material

18‧‧‧Heater temperature detection unit (Thermistor)

18a‧‧‧ Detection end

19‧‧‧Stopper (with shoulder screw)

19a‧‧‧Head

19b‧‧‧Cylinder

19c‧‧‧Bolt

20‧‧‧Inside heater

21‧‧‧Outside heater

22‧‧‧upside insulating material

22a, 23a‧‧‧Slit

22b, 23b‧‧‧ opening

23‧‧‧ underside insulating material

24‧‧‧Terminal

25‧‧‧heater

26‧‧‧Steam heater

27‧‧‧Back heater

28‧‧‧ Magnetron

29‧‧‧Circular fan motor

30‧‧‧Bidirectional Triode

31‧‧‧ Relay

32‧‧‧Regional junction mark

33‧‧‧mounting surface

34‧‧‧ outer edge

A, XV‧‧‧ symbols

B‧‧‧Fast heating area

FIG. 1 is a perspective view showing an appearance of a heating conditioner according to this embodiment. Fig. 2 is a perspective view showing a state in which a door in the heating conditioner of the embodiment is opened. FIG. 3 is a perspective view showing a state where an outer cover of the heating conditioner according to the embodiment is removed. Fig. 4 is a front view showing the upper side of the heating conditioner of the embodiment in a cross section. Fig. 5 is an exploded perspective view of a planar heater unit in the heating conditioner of the embodiment. FIG. 6A is a plan view of an upper plate of a heating chamber of a planar heater unit in the heating conditioner of the present embodiment. FIG. 6B is an end view of line 6B-6B in FIG. 6A. FIG. 6C is an end view of line 6C-6C in FIG. 6A. Fig. 7 is an exploded perspective view showing a planar heater in the heating conditioner of the embodiment. Fig. 8 is a plan view showing a heater in the heating conditioner of the present embodiment. Fig. 9 is a plan view showing a planar heater in a heating conditioner according to this embodiment. Fig. 10 is a rear view showing a planar heater in the heating conditioner of the present embodiment. FIG. 11 is a perspective view showing a state where a planar heater is mounted on a heating chamber in the heating conditioner of this embodiment. FIG. 12A is a plan view of a pressing plate in the heating conditioner of this embodiment. FIG. 12B is an end view of line 12B-12B of FIG. 12A. FIG. 12C is an end view of line 12C-12C of FIG. 12A. 13 (a)-(b) are cross-sectional views illustrating a method for mounting a pressing plate on a heating chamber upper plate in the heating conditioner of the present embodiment. FIG. 14 is a cross-sectional view showing an installation state of the pressing plate to the upper plate of the heating chamber when the upper plate of the heating chamber is at a high temperature in the heating conditioner of this embodiment. FIG. 15 is an enlarged cross-sectional view showing a state where a heater temperature detecting section is installed in the heating conditioner of this embodiment. Fig. 16 is a perspective view showing a planar heater unit in the heating conditioner of the embodiment. FIG. 17A is a plan view of a planar heater unit in the heating conditioner of this embodiment. FIG. 17B is a sectional view taken along line 17B-17B in FIG. 17A. FIG. 17C is a sectional view taken along line 17C-17C in FIG. 17A. FIG. 18 is a circuit diagram of a heating conditioner in the heating conditioner of this embodiment. FIG. 19 is a perspective view showing a heating pan used in the heating conditioner of this embodiment. FIG. 20 is a plan view of the heating pan shown in FIG. 19. FIG.

Claims (10)

A heating conditioner includes: a heating chamber for heating an object to be conditioned; a planar heater provided on a top wall of the heating chamber, and an inner heater and a surrounding heater disposed directly above a central part of the top wall. The inner heater is an external heater and becomes a heat source; and the control unit controls the inner heater and the outer heater of the planar heater, respectively, and the top wall of the heating chamber has a heating chamber side which becomes a concave surface. A three-dimensional curved surface, and the entire surface of the planar heater is tightly fixed relative to the top wall, and the top wall of the heating chamber has a plurality of polygonal shapes that absorb the expansion / contraction deformation force caused by the heat of the planar heater region. A heating conditioner includes: a heating chamber for heating an object to be conditioned; a planar heater provided on a top wall of the heating chamber, and an inner heater and a surrounding heater disposed directly above a central part of the top wall. The inner heater is a heat source outside the heater; and the control unit controls the heating conditioner of the inner heater and the outer heater of the planar heater, and the top wall of the heating chamber has a heating chamber side. It will become a concave three-dimensional curved surface, and the entire surface of the planar heater is closely fixed to the top wall. The top wall of the heating chamber has a plurality of deformation forces that absorb expansion / contraction caused by the heat of the planar heater. Honeycomb shaped area. A heating conditioner includes: a heating chamber for heating an object to be conditioned; a planar heater provided on a top wall of the heating chamber, and an inner heater and a surrounding heater disposed directly above a central part of the top wall. The inner heater is a heat source outside the heater; and the control unit controls the heating conditioner of the inner heater and the outer heater of the planar heater, and the top wall of the heating chamber has a heating chamber side. It will become a concave three-dimensional curved surface, and the entire surface of the planar heater is closely fixed to the top wall. The top wall of the heating chamber has a plurality of deformation forces that absorb expansion / contraction caused by the heat of the planar heater. In the area, the top wall has a heat generating area where the planar heater is closely mounted, and the heat generating area is formed with a plurality of areas separated by a groove. The heating conditioner according to claim 3, wherein the three-dimensional curved surface on the top wall surface of the heating chamber is rectangular in plan view, and the curvature in the long side direction is different from the curvature in the short side direction. The heating conditioner according to claim 3, wherein the planar heater is held by a heat insulating material by a pressing plate having a three-dimensional curved surface mounted with a movable range with respect to the top wall. The heating conditioner according to claim 5, wherein the pressing plate is formed with a pressing portion protruding in a direction of the inner heater and the outer heater in each region facing the inner heater and the outer heater, and It is comprised so that the said inner heater and the said outer heater may be pressed through the said heat insulation material by the said pressing part. If the heating conditioner of claim 3 has a configuration in which the total of the maximum heater output of the inside heater and the outside heater exceeds the rated power of the heating conditioner, the control unit is configured to control the input to the inside heater. Power so that the total output of the heaters of the inner heater and the outer heater does not exceed the rated power of the heating conditioner. For example, the heating conditioner of claim 3 includes a heater temperature detector for detecting a temperature of an area directly heated by the inner heater, and the control unit detects the heater based on the heater detected by the heater temperature detector. The temperature information is controlled to raise the inner heater to a set temperature of the heating chamber. The heating conditioner according to claim 3, wherein at least the surface on the heater side of the top wall of the heating chamber is configured to have a black silicon film. The heating conditioner according to claim 3, wherein at least the heating chamber-side surface of the heating chamber is configured to have a self-cleaning film.