JP4059166B2 - High-frequency heating device with steam generation function - Google Patents

Description

  The present invention relates to a high-frequency heating apparatus with a steam generation function for heating an object to be heated by combining high-frequency heating and steam heating, and particularly relates to the steam heating.

The conventional high-frequency heating apparatus, and a microwave oven having a microwave generator for heating, there is a con-bi Nation range or the like by adding a convection heater for generating heated air to the microwave oven. In addition, steamers that introduce steam into a heating chamber and heat them, steam convection ovens in which a convection heater is added to the steamer, and the like are also used as heating cookers.

When cooking food or the like with the above-described cooking device, the cooking device is controlled so that the heating finish of the food becomes the best. That is, cooking combining high frequency heating and hot air heating can be controlled by a combination range, and cooking combining steam heating and hot air heating can be controlled by a steam convection oven, respectively. However, cooking that combines high-frequency heating and steam heating requires time and effort such as transferring the heated food between separate heating cookers. In order to eliminate the inconvenience, there is one in which high-frequency heating, steam heating, and electric heating are realized with one heating cooker ( see, for example, Patent Document 1 ).
JP 54-115448 A

  However, according to the configuration of the above publication, a vaporizing chamber for generating heated steam is buried below the heating chamber, and water is always supplied from the water storage tank at a constant water level. Therefore, it is difficult to perform daily cleaning work around the heating chamber. Especially in the vaporization chamber, calcium, magnesium, etc. in the water are concentrated in the process of vapor generation, and settled and settled in the bottom of the vaporization chamber and in the pipe. As a result, there is a problem that an unsanitary environment in which molds and the like are easy to breed.

  In addition, as a method of introducing steam into the heating chamber, a method of generating steam by a heating means such as a boiler arranged outside the heating chamber and supplying the generated steam to the heating chamber can be considered. In particular, it is difficult to disassemble and clean the heating means because of the propagation of germs, breakage due to freezing, contamination due to rust, etc. In a cooking device that needs to be used, it is difficult to adopt a method of introducing steam from the outside.

  In addition, the cooking device is often provided with a temperature sensor such as an infrared sensor for measuring the temperature of the object to be heated, but when the steam fills the heating chamber, the infrared sensor is not the temperature of the object to be heated but the temperature of the object to be heated. The temperature of suspended particles of vapor existing between objects is measured. For this reason, it becomes impossible to accurately measure the temperature of the object to be heated. Then, the heating control performed based on the temperature detection result of the infrared sensor does not operate normally, for example, a problem such as insufficient heating or excessive heating occurs, particularly when automatic cooking is performed in a sequential procedure. The process proceeds to the next step as it is, and cannot be dealt with by simple reheating, cooling, etc., and cooking may end in failure.

  Moreover, according to each temperature state, such as the kind of to-be-heated material, frozen goods, refrigerated goods, etc., it was not necessarily able to heat with a heating pattern with high heating efficiency, and there existed a problem that heating time became long.

  Therefore, in consideration of the above circumstances, the present applicant, as a prior invention, can easily keep the steam generating part clean and always hygienic, and accurately measure the temperature of the object to be heated. We have developed a high-frequency heating device with a steam generation function that enables proper heat treatment and increases heating efficiency.

  FIGS. 1-7 has shown the high frequency heating apparatus with a steam generation function provided with the steam generation part which concerns on the prior invention of this applicant.

  FIG. 1 is a front view showing a state in which the open / close door of the high-frequency heating apparatus is opened, FIG. 2 is a perspective view showing an evaporating dish of a steam generating unit used in this apparatus, and FIG. The perspective view which shows a board, FIG. 4 is sectional drawing of a steam generation part.

  The high-frequency heating device 60 with a steam generating function is a heating cooker that supplies a high-frequency (microwave) and steam to a heating chamber 62 that houses the object to be heated to heat the object to be heated. A magnetron 70 serving as a high-frequency generating unit for generating a high frequency; a steam generating unit 69 for generating steam in the heating chamber 62; a circulation fan 64 for stirring and circulating the air in the heating chamber 62; A convection heater 66 as an indoor air heater that heats the air circulating through the heating chamber 62, and an infrared sensor 63 that detects the temperature in the heating chamber 62 through a detection hole provided in the wall surface of the heating chamber 62.

  The heating chamber 62 is formed inside a box-shaped main body case 61 that is open on the front surface, and an open / close door 71 with a translucent window 71 a that opens and closes a heated object outlet of the heating chamber 62 on the front surface of the main body case 61. Is provided. The open / close door 71 can be opened and closed in the vertical direction by the lower end being hinged to the lower edge of the main body case 61. A predetermined heat insulating space is secured between the wall surfaces of the heating chamber 62 and the main body case 61, and a heat insulating material is loaded in the space as necessary. In particular, the space behind the heating chamber 62 is a circulation fan chamber 67 that accommodates the circulation fan 64 and its drive motor 84 (see FIG. 7), and the rear wall of the heating chamber 62 is the heating chamber 62 and the circulation fan. A partition plate 68 that defines the chamber 67 is formed. The partition plate 68 has an intake vent hole 65 for sucking air from the heating chamber 62 side to the circulation fan chamber 67 side, and an air vent hole 72 for blowing air from the circulation fan chamber 67 side to the heating chamber 62 side. Different formation areas are provided. The ventilation holes 65 and 72 are formed as a number of punch holes.

  The circulation fan 64 is arranged with the center of rotation positioned at the center of the rectangular partition plate 68, and a rectangular annular convection heater 66 is provided in the circulation fan chamber 67 so as to surround the circulation fan 64. It has been. The intake vent hole 65 formed in the partition plate 68 is disposed in front of the circulation fan 64, and the blower vent hole 72 is disposed along the rectangular annular convection heater 66. When the circulation fan 64 is turned, the wind is set so as to flow from the front surface side of the circulation fan 64 to the rear surface side where the drive motor 84 is located, so that the air in the heating chamber 62 passes through the intake vent hole 65 and the circulation fan 64. Then, the air passes through the convection heater 66 in the circulation fan chamber 67 and is sent out from the blower vent hole 72 into the heating chamber 62. Therefore, by this flow, the air in the heating chamber 62 is circulated through the circulation fan chamber 67 while being stirred.

  The magnetron 70 is disposed, for example, in a space below the heating chamber 62, and a stirrer blade 73 is provided at a position for receiving a high frequency generated from the magnetron. By irradiating the rotating stirrer blade 73 with the high frequency from the magnetron 70, the high frequency is supplied into the heating chamber 62 while being stirred by the stirrer blade 73. The magnetron 70 and the stirrer blade 73 are not limited to the bottom of the heating chamber 62 but can be provided on the upper surface or the side surface of the heating chamber 62.

  As shown in FIGS. 3 and 4, the steam generating unit 69 is disposed on the lower side of the evaporating dish 75 having a water reservoir recess 75 a that generates steam by heating, as shown in FIG. 2. An evaporating dish heater 76 that heats the evaporating dish 75 and a reflecting plate 77 having a substantially U-shaped cross section that reflects the radiant heat of the heater toward the evaporating dish 75. The evaporating dish 75 is, for example, an elongated plate made of stainless steel, and is disposed on the back bottom surface of the heating chamber 62 on the side opposite to the heated object outlet, with the longitudinal direction along the partition plate 68. Yes. As the evaporating dish heater 76, a glass tube heater, a sheathed heater, a plate heater, or the like can be used.

  FIG. 5 is a block diagram of a control system for controlling the high-frequency heating device 60 with a steam generation function. This control system is mainly configured of a control unit 701 including a microprocessor, for example. The control unit 701 mainly exchanges signals with the power supply unit 703, the storage unit 705, the input operation unit 707, the display panel 709, the heating unit 711, the cooling fan 81, and the like.

  The input operation unit 707 includes various operations such as a start switch 719 for instructing the start of heating, a changeover switch 721 for switching a heating method such as high-frequency heating and steam heating, and an automatic cooking switch 723 for starting a program prepared in advance. The switch is connected.

  The heating unit 711 is connected to a high frequency generator 70, a steam generator 69, a circulation fan 64, an infrared sensor 63, and the like. The high frequency generator 70 operates in cooperation with a radio wave agitator (stirler blade drive unit) 73. The steam generator 69 includes an evaporating dish heater 76, an indoor air heater 66 (convection heater), and the like. Is connected. The block diagram includes elements other than the mechanical components described above (for example, a water pump 80, a door blower damper 82, an exhaust damper 83, etc.). This will be described in the embodiment.

  Next, the basic operation of the above-described high-frequency heating device 60 with a steam generation function will be described with reference to the flowchart of FIG.

  As an operation procedure, first, food to be heated is placed on a dish or the like and placed in the heating chamber 62, and the open / close door 71 is closed. Then, the heating method, the heating temperature, or the time is set by the input operation unit 707 (step 10; hereinafter abbreviated as S10), and the start switch is turned on (S11). Then, the heating process is automatically performed by the operation of the control unit 701 (S12).

  That is, the control unit 701 reads the set heating temperature / time, selects and executes the optimum cooking method based on the read temperature / time, and determines whether the set heating temperature / time has been reached (S13). When the set value is reached, each heating source is stopped and the heating process is terminated (S14). In S12, steam generation, room air heater, circulation fan rotation, and high frequency heating are performed individually or simultaneously.

  In the above operation, for example, an operation when the mode of “steam generation + circulation fan ON” is selected and executed will be described. When this mode is selected, as shown in the operation explanatory diagram of the high-frequency heating device 60 in FIG. 7, when the evaporating dish heater 76 is turned on, water in the evaporating dish 75 is heated and steam S is generated. . The steam S rising from the evaporating dish 75 is sucked into the central portion of the circulation fan 64 from the intake vent hole 65 provided in the substantially central portion of the partition plate 68, and passes through the circulation fan chamber 67 to surround the partition plate 68. It blows out toward the inside of the heating chamber 62 from the ventilation hole 72 for ventilation provided in the part. The blown-out steam is stirred in the heating chamber 62 and again sucked into the circulation fan chamber 67 side from the intake vent hole 65 at the substantially central portion of the partition plate 68. Thereby, a circulation path is formed in the heating chamber 62 and the circulation fan chamber 67. The generated steam is guided to the intake vent hole 65 without providing the ventilation vent hole 72 below the arrangement position of the circulation fan 64 of the partition plate 68. Then, as shown by the white arrow in the figure, the steam circulates through the heating chamber 62, so that the steam is blown onto the article to be heated M.

  At this time, since the steam in the heating chamber 62 can be heated by turning on the indoor air heater 66, the temperature of the steam circulating in the heating chamber 62 can be set to a high temperature. Therefore, so-called superheated steam is obtained, and heating cooking with a burnt surface on the surface of the article to be heated M is also possible. In addition, when performing high-frequency heating, the magnetron 70 is turned on and the stirrer blade 73 is rotated, so that high-frequency cooking can be performed without unevenness by supplying high-frequency into the heating chamber 62 while stirring.

Thus, according to the high-frequency heating device of the prior invention, since the steam is generated not inside the heating chamber 62 but inside, the evaporation generating steam is performed similarly to the case where the inside of the heating chamber 62 is cleaned. The dish 75 can be easily cleaned. For example, in the process of generating steam, calcium, magnesium, chlorine compounds, etc. in the water may be concentrated and settled and fixed to the bottom of the evaporating dish 75. However, the material adhering to the surface of the evaporating dish 75 is wiped off with a cloth or the like. Just wipe clean. In addition, as described with reference to FIG. 4, the evaporating dish installed inside the high-frequency heating apparatus is radiantly heated by the heater, and the radiant heat from the heater is reflected to the evaporating dish by the reflector. Therefore, heating efficiency is improved .

FIG. 9 is an exploded perspective view of the flat heater device.

  In (A), 20 is a metal evaporating dish, and a side part 21 and a bottom part 22 of the dish constitute a dish part, and a screw hole 23 is opened.

  In (B1), 11 is a heater device made of aluminum die-casting, 111 is a contact portion to the evaporating dish bottom 11, 112 is a mounting portion, and 113 is a cast U-shaped sheathed heater. The screw hole 117 and the screw hole 23 of FIG.

  In (B2), the same reference numerals as in (B1) indicate the same items, and the description thereof will be omitted. Here, it can be seen that the sheathed heater 113 is U-shaped and cast. In addition, two raised portions 11a and 11b are formed on the back side of the aluminum die cast, and an insertion hole for inserting a thermistor described later is formed in the first raised portion 11a on the left side in the drawing. Yes.

Moreover, the water supply pipe 114 mentioned later is being fixed to the 2nd protruding part 11b on the right side in the figure. With this configuration, the heat generated by the sheathed heater 113 is directly conducted from the aluminum die cast contact portion 111 to the evaporating dish 20, so that the conventional tube shown in FIG. Compared with the radiant heating device 15 using the heater 13 and the reflecting plate 14, the heat conduction is remarkably increased, so that cooking by steam is accelerated .

The good Unishi Te, in the prior invention, heating efficiency is significantly improved over conventional apparatus, and was able to perform even simple clean.

  However, the present applicant was not satisfied with this yet, and further increased the heating efficiency. Further, since the reflecting plate was bulky, it was not suitable for the trend of miniaturization, so it was considered not to use it.

In addition , the heater device is directly fixed to the evaporating dish with screws in the miniaturized configuration of the prior invention in which the speed until evaporation of the dripped water is drastically increased when the water is dripped is the same wattage. since had been, as shown in (a) to FIG. 13 (b), the the evaporating dish 206 by the heat of the heater device 208 is deformed, a gap is generated at the contact surface between the heater device 208 evaporating dish 206 . When the gap occurs, the contact between the evaporating dish 206 and the heater device 208 becomes poor, the temperature of the heater device 208 becomes difficult to conduct heat to the evaporating dish 206, and the efficiency of steam generation decreases, and the temperature of the heater device 208 increases. Since it continued, the energization of the heater device 208 was turned off by the thermistor, and the generation of steam worsened.

Moreover, the temperature difference between the steam temperature in the heating chamber when there is a gap on the contact surface between the heater device and the evaporating dish and when there is no gap (90 ° C or more after 10 minutes without the gap) is several tens of degrees. ringing intends island.

The present invention solves the above-mentioned conventional problems as well as the problems of the prior invention, improves the close contact between the evaporating dish and the heater device, eliminates the power supply to the heater device of the thermistor, and provides the best steam generation. The purpose is to do.

To solve the above problems, the invention of high frequency heating apparatus with steam generation function according to claim 1 includes a heating chamber that houses an object to be heated, and a high-frequency generator supplying a high frequency into the heating chamber, the heating chamber comprising a steam generator for generating steam in the heating chamber is composed of a heating device for heating the evaporation dish and the evaporated Hatsusara provided on the bottom surface, and a holding plate for holding the heater device, said heating device The heater device is formed by embedding a sheathed heater in an aluminum die cast, and the holding plate is disposed so as to press the heater device against the back side of the evaporating dish, and the elongating axis of the evaporating dish is along the longitudinal direction of the heater apparatus. It is characterized by being formed in a shape that is convex toward the surface .

  The invention of a high-frequency heating device with a steam generation function according to claim 2 is provided on a heating chamber that accommodates an object to be heated, a high-frequency generator that supplies a high frequency to the heating chamber, and a bottom surface of the heating chamber. A steam generating unit configured to generate steam in the heating chamber, and a holding plate that holds the heater device, the heater device being sheathed in an aluminum die cast. The heater device is formed by embedding a heater, and the holding plate is formed in a shape in which the longitudinal axis along the longitudinal direction of the heater device is convex toward the heater device, and the heater device is elastically pressed against the evaporating dish. It is characterized by that.

With such a configuration, high-frequency heating and steam heating can be realized with a single heating device, and the heater device is always in close contact with the evaporating dish while keeping the evaporating dish cleaning work easy. Thus, the heat of the heater device is transferred to the water in the evaporating dish .

As described above, according to the present invention, high-frequency heating and steam heating can be realized by a single heating device, and the heater device is always in close contact with the evaporating dish while facilitating cleaning of the evaporating dish. ready, by transfer our of heat is improved, despite the same wattage, it is possible to significantly increase the speed up to the evaporation of the dropped water when water was added dropwise .

A first invention is a high frequency generation unit, a heating chamber for accommodating an object to be heated, and a high-frequency generator supplying a high frequency to the heating chamber, the evaporating dish and the evaporated Hatsusara provided on the bottom surface of the heating chamber a steam generator for generating steam in the heating chamber is composed of a heating device for heating, and a holding plate for holding the heater device heater device comprising the heater device embeds the sheathed heater in an aluminum die-cast And the holding plate is disposed so as to press the heater device against the back side of the evaporating dish, and the evaporating dish is formed in a shape in which the longitudinal axis along the longitudinal direction of the heater device is convex toward the heater device side. And a 2nd invention heats the heating chamber which accommodates a to-be-heated material, the high frequency generating part which supplies a high frequency to the heating chamber, the evaporating dish provided in the bottom of the heating chamber, and the evaporating dish A steam generator configured to generate steam in the heating chamber and a holding plate for holding the heater device, the heater device being a heater device in which a sheathed heater is embedded in an aluminum die-cast, The holding plate is formed in a shape in which a longitudinal axis along the longitudinal direction of the heater device is convex toward the heater device side, and the heater device is elastically pressed against the evaporating dish. Since the heater is in close contact with the evaporating dish and the heat of the heater device is transmitted to the water in the evaporating dish and is not turned off by the thermistor, a stable amount of steam can be secured.

According to the third aspect of the present invention, in particular, by attaching the holding plate of the first and second aspects of the invention to the heating chamber without screwing the evaporating dish, the heater device is pressed against the back side of the evaporating dish . The evaporating dish and the heater device are always interlocked, and even when the evaporating dish is deformed due to the heat of the heater device and a gap is generated, the holding plate can press the heater device to ensure close contact with the evaporating dish.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments .

Figure 8 is a side sectional view showing a schematic configuration of a heating device according to the present invention, A1 represents a first embodiment of the present invention, B is a thing of the prior invention was above mentioned, respectively.

(Embodiment 1)
In FIG. 8A1 showing the first embodiment, reference numeral 10 denotes an apparatus main body housing, and 11 denotes a flat heater device. The flat-plate heater device 11 is a heater device in which a U-shaped sheathed heater is embedded in an aluminum die-cast, and is finished in a flat plate shape. This flat plate portion is directly attached to the back side of an iron plate evaporating dish. It is.

This flat heater device is the same as the flat heater device of FIG. 9 described above, and the heat generated by the sheathed heater 113 is directly conducted from the aluminum die-cast contact portion 111 to the evaporating dish 20. Therefore, heat conduction is remarkably faster than that of the radiant heating device 15 using the tube heater 13 and the reflector 14 of the prior invention shown in FIG.

  FIG. 10 is a perspective view in which a holding plate is attached to the flat heater device according to the embodiment.

10, a configuration of attaching the heater unit 208 to the holding plate 209, fixed or by screws or the like, may be such as by a fixed fitting. FIG. 12 shows a cross-sectional view of the periphery of the evaporating dish and the heater device according to the first embodiment of the present invention.

In FIG. 12, the evaporating dish 206 is located at the lower rear part of the heating chamber 207 and has a convex shape in which the longitudinal axis along the longitudinal direction of the heater device 208 is convex toward the heater device 208 side. The plate 209 is pressed against the evaporating dish 206 . The holding plate 209 is fastened to the left and right of the evaporating dish 206 and the heating chamber 207 with screws 210. The evaporating dish 206 and the heater device 208 are in close contact with each other, but are not directly and mechanically fixed by the screws 210 or the like. It has not been.

Furthermore the holding plate 209 with a convex shape in which the longitudinal axis is convex toward the heater 208 side along the longitudinal direction of the heater device 208 As is clear from FIG. 12, so as to press the heater device 208 resiliently Yes. In the experiment, the height of the convex shape of the evaporating dish 206 / heater device 208 was 0.5 mm to 1.5 mm, and the optimum contact state could be maintained.

Here will be described with reference to the case evaporation pan 206 and the heater 208 is no gap have close contact, to FIGS. 14 and 15 the temperature difference between the heating chamber when there is a gap not in close contact.

FIG. 14 is a diagram illustrating the heater temperature and the temperature in the heating chamber in a state where a gap is generated between the heater device 208 and the evaporating dish 206.

FIG. 15 is a diagram illustrating the heater temperature and the temperature in the heating chamber when the heater device 208 and the evaporating dish 206 are in close contact with each other.

As shown in the graph of FIG. 14 , when there is a gap, the heat of the heater device 208 cannot conduct heat to the evaporating dish 206 due to the gap, and the temperature of the heater device 208 rises, and the heater OFF level for protecting the heater. As a result, the temperature of the heating chamber becomes about 70 ° C to 80 ° C and can be cooked with steam (the temperature required for coagulation of the egg liquid of tea fumigation is 82 ° C or higher). ) Can not be cooked.

As shown in the graph of FIG. 15 , when there is no gap and the heater device 208 and the evaporating dish 206 are in close contact, the heat of the heater device 208 is conducted to the evaporating dish 206 and is converted into water in the evaporating dish 206. Therefore, the temperature of the heater device 208 itself does not rise to the heater OFF level and is always energized, water can be efficiently converted into steam, and the temperature of the heating chamber becomes 90 ° C. or more, which is sufficient for cooking with steam. The temperature can be secured.

Further, the heater equipment 208 and has a configuration which is pressed against the evaporating dish 206 by the holding plate 209, even if the deformed evaporating dish 206 by the heat of the heater device 208, the heater 208 and the evaporation dish 206 with screws 210 or the like Is not fixed, and can be pressed by the holding plate 209 to maintain close contact. Further, the evaporating dish 206 and the holding plate 209 are convex so as to face each other, so that the degree of contact can be further increased.

As described above , the holding plate 209 is disposed so as to press the heater device 208 against the evaporating dish 206, so that the heater device 208 is always in close contact with the evaporating dish 206, and the heat of the heater device 208 evaporates. Since the thermistor is not turned off by being transmitted to the water in the plate 206, a stable amount of steam can be provided, and steamed dishes like steam can be provided.

  When the time from when an electric current was supplied to the heater device to when evaporation started was measured, it took about 60 seconds in the conventional example, but according to the present invention, about 30 seconds could be shortened by about 30 seconds.

  Further, regarding the amount of steam generated, it is 10 cc per minute in the conventional example, whereas it is 12 to 13 cc per minute according to the present invention, and it can be evaporated as much as 20 to 30%. Thus, the cooking time can be shortened by shortening the start time and increasing the evaporation amount.

  In addition, about the attachment position and number of heater apparatuses with respect to an evaporating dish, many structures can be considered by the use application of a cooking appliance. An example is introduced in FIG.

  FIG. 11 is a diagram for explaining the installation location and the number of evaporating dishes in the high-frequency heating device according to the present invention. FIG. 11 (a) is a front view showing a state in which the open / close door of the high-frequency heating device is opened, and FIG. It is a schematic front view which shows a position.

  In FIG. 11A, 40 is a high-frequency heating device with a steam generating function, 41 is an upper ceiling of the heating chamber, 42 is a right side wall, 43 is a left side wall, 44 is a bottom surface, 45 is a metal plate with an evaporating dish, and 46R is a right side. An evaporating dish, 46L is a left evaporating dish, 47R is a right water supply port, 47L is a left water supply port, and 49 is a circulation fan.

As described above, the evaporating dish 46 according to the present invention has a large evaporating capacity, and therefore, it is not necessary to be provided horizontally across the depth of the conventional microwave oven (see 15 in FIG. 1). In this way, one place ((b) (b)) or two places on the left and right corners of the back of the microwave oven may be provided at the right or left corner of the microwave oven.

  In this case, one piece is sufficient as long as an evaporation capability comparable to the conventional one is obtained.

  However, if you need a lot of steam instantaneously depending on the type of food, it is convenient to have two. In that case, you can use both, and if you do not need much steam, you only need one steam. You will be able to control. As another usage, it is also possible to perform steam adjustment by operating one of them continuously and stopping or intermittently operating the other.

  For example, when baked by applying steam (conventional example) by radiant heat to steam (conventional example) and steam (conducted by the present invention) by conduction heat to frozen shumai, the rate of weight change is 0.9% in the conventional example, In the present invention, it increased by 1.6%. In other words, when steam is warmed together with radio waves that are evaporated at high speed due to conduction heat, the steam spreads faster in the cabinet and attaches to the food surface than by radiant heat, so it can be heated while giving moisture to the food. More moisture (1.6% increase) than steam increase due to radiant heat (0.9% increase) will result in a more moist Shumai.

In addition, in the cooking of the yakitori, in the conventional example, it was reduced by 2.6%, whereas in the present invention, it was reduced by 2.3%. In other words, when the heat of steam vaporized at high speed by conduction heat and radio waves are combined and heated, steam spreads faster in the cooking chamber than cooking by radiant heat and cooking is completed earlier. It can be stopped quickly, and the dryness is less (2.3 % decrease) than the weight loss (2.6% decrease) due to the drying of the conventional apparatus, so that the feeling of dryness is reduced.

Thus, according to the present invention, since the time required for heating is shorter than before, the time for heating with radio waves is also shortened. Therefore, the time during which the moisture of the object evaporates is also shortened, and the moisture of the object is reduced. How to decrease decreases .

As described above, the high-frequency heating apparatus with a steam generation function according to the present invention can remarkably increase the speed until evaporation of water dropped when water is dropped, and stabilize the amount of steam. Therefore, the steam heating method according to the object to be heated can be easily realized, and can be applied to uses such as a heater that heat-treats the object to be heated in combination with steam heating.

The front view which shows the state which opened the door of the high frequency heating apparatus with a steam generation function of 1st Embodiment of this invention and a prior invention . The perspective view which shows the evaporating dish of the steam generation part used for the high frequency heating apparatus with a steam generation function of FIG. The perspective view which shows the evaporating dish heater of a steam generation part, and a reflecting plate Sectional view of the steam generation section of the equipment Block diagram of control system for controlling high-frequency heating device with steam generation function Flow chart explaining basic operation of high-frequency heating apparatus with steam generation function Operation explanatory diagram of high-frequency heating device with steam generation function BRIEF DESCRIPTION OF THE DRAWINGS It is side sectional drawing which shows schematic structure of the heating apparatus which concerns on this invention and prior invention , (A1) is side sectional drawing which shows the 1st Embodiment of this invention, (B) is sectional side view which shows the thing of a prior invention BRIEF DESCRIPTION OF THE DRAWINGS It is a disassembled perspective view of the flat heater apparatus which concerns on embodiment, (A) is a figure which shows an evaporating dish (B1) is a perspective view from the attachment side to the evaporating dish of a heater apparatus (B2) is seen from the back side of the heater apparatus Perspective view The perspective view which attached the holding plate to the flat heater apparatus which concerns on embodiment It is a figure explaining the installation location and number of evaporating dishes in the high frequency heating apparatus which concerns on embodiment, (a) is a front view which shows the state which opened the opening-and-closing door of the high frequency heating apparatus, and (b) shows the position of an evaporating dish. Outline front view Sectional drawing around the evaporating dish and heater device according to the embodiment It is sectional drawing (AA cross section of FIG. 1) explaining the malfunction at the time of fixing a heater apparatus to an evaporating dish, (a) Sectional drawing which shows the state before an evaporating dish deform | transforms (b) After an evaporating dish deform | transforms Sectional view showing the state of The figure which shows the heater temperature in the state which the clearance gap generate | occur | produced in the heater apparatus and the evaporating dish, and the temperature in a heating chamber The figure which shows the heater temperature and the temperature in a heating chamber in a state with which a heater apparatus and an evaporating dish contact | adhere

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Apparatus main body 11 Flat heater device 20 Metal evaporating dish 45 Evaporating dish
50 Thermistor 62 Heating chamber 113 U-shaped sheathed heater 206 Evaporating dish
207 Heating chamber
208 Heater device
209 Holding plate
210 screw

Claims (3)

A heating chamber that houses an object to be heated, said heating said a high-frequency generator supplying a high frequency into the heating chamber, is constructed by the heater unit for heating the evaporating dish and the evaporated Hatsusara provided on the bottom surface of the heating chamber a steam generator for generating steam in a room, and a holding plate for holding the heater device, the heater device and the heater unit comprising embed sheathed heater in an aluminum die-casting, evaporating dish the holding plate heater device A high-frequency heating apparatus with a steam generating function is provided so as to be pressed against the back side of the heater , and the evaporating dish is formed in a shape in which the longitudinal axis along the longitudinal direction of the heater device is convex toward the heater device side . The heating chamber is configured by a heating chamber that accommodates an object to be heated, a high-frequency generating unit that supplies a high frequency to the heating chamber, an evaporating dish provided on a bottom surface of the heating chamber, and a heater device that heats the evaporating dish. A steam generation unit that generates steam in a room and a holding plate that holds the heater device, wherein the heater device is a heater device in which a sheathed heater is embedded in an aluminum die cast, and the holding plate is in the longitudinal direction of the heater device. A high-frequency heating apparatus with a steam generating function is formed so that the longitudinal axis extending along the line is convex toward the heater device, and the heater device is elastically pressed against the evaporating dish . The high frequency heating apparatus with a steam generating function according to claim 1 or 2, wherein the holding plate is attached to the heating chamber without being screwed to the evaporating dish, thereby pressing the heater device against the back side of the evaporating dish .

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