JP4196088B2 - 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. (For example, refer to 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 applicant of the present invention, as a prior invention, can keep the steam generating part easy to clean and always keep it hygienic, and properly measure the temperature of the object to be heated. We have developed a high-frequency heating device with a steam generation function that can perform the treatment and increase the 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 said prior invention.

  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. since, the heating efficiency is up.

As this, 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, some cooking menus require a large amount of steam or a small amount, and it is necessary to improve to cope with both.

  The present invention improves these drawbacks, and has a miniaturized steam generating section that drastically increases the speed of evaporation of the dripped water when the water is dripped. The object is to provide a controllable high-frequency heating device.

In order to solve the above-mentioned problem, a high-frequency heating device with a steam generation function according to a first aspect of the present invention includes a high-frequency generation unit, a heating chamber that houses an object to be heated, an evaporating dish provided in the heating chamber, and the evaporating dish In the high-frequency heating device with a steam generation function, the heater device has a priority order. The high-frequency heating device has a water supply port for injecting water into the water, a heater device that heats the evaporating dish, and a control unit that controls the heater device. It is comprised by the two or more heaters attached , and the said control part is energized and controlled from the said evaporating dish to the heater near the said water supply opening and other heaters among the heaters according to cooking in order of high priority. The amount of steam is adjusted.

By adopting such a configuration, the wattage is larger than that of the conventional apparatus and the prior invention, the speed until evaporation of the dropped water is drastically increased when the water is dropped, and the generated steam is The amount can be large . Moreover , the amount of steam generation can be made variable according to cooking.

With a steam generating function high frequency heating equipment of the second invention, in the high frequency heating apparatus with steam generation function according to the first invention, the heater device and the heater unit comprising embedded two or more sheathed heater in an aluminum die-cast, which Is arranged on the back side of the evaporating dish.

By adopting such a configuration, the wattage is larger than that of the conventional apparatus and the prior invention, the speed until evaporation of the dropped water is drastically increased when the water is dropped, and the generated steam is The amount can be large.

Third with a steam generating function high frequency heating equipment of the present invention is directed to the high frequency heating apparatus with steam generation function of the first aspect of the invention, the heater device aluminum die upper surface of the cast evaporating dish and two or more of the sheathed heater to its lower surface The heater device is embedded, and the heater device is attached so that the evaporating dish of the heater device faces the opening corresponding to the evaporating dish.

By adopting such a configuration, heating of water is further accelerated than in the first invention.

The fourth invention is the high frequency heating apparatus with steam generation function according to the first invention, the control unit, Ri by other heating data, prior characterized by energizing the heating data close to the water inlet to.

  By controlling in this way, the water supplied from the water supply port can be quickly heated and converted into steam.

According to a fifth aspect , in the high-frequency heating device with a steam generation function according to the first aspect , the control unit alternately energizes a heater close to the water supply port and another heater .

  By controlling in this way, it becomes a heating system that is not biased to only one heater device, so that the energization time of the heater device can be suppressed and the durability can be improved, and the heater heat can be locally applied to the evaporating dish. Can be avoided and thermal deformation of the evaporating dish can be mitigated.

6th invention is the high frequency heating apparatus with a steam generation function of 1st invention, a control part interrupts | blocks or interrupts | blocks other heaters which are not heaters close to a water supply port from continuous heating operation, when it is desired to reduce the amount of steam. It is characterized by.

  By comprising in this way, a vapor | steam can be rapidly generated at the time of a cooking start, and control which reduces a steam generation amount after that can be made easy.

As described above, according to the invention of the high frequency heating device with a steam generating function of the first to sixth inventions, the wattage is larger than that of the conventional device and the preceding invention, and the water dropped when water is dropped is evaporated. The speed to reach can be remarkably increased, and the amount of generated steam can be increased. Moreover, since the said control part can adjust the vapor | steam amount from an evaporating dish by carrying out heater control of each heater apparatus according to cooking, the vapor | steam heating system according to cooking is realizable.

The first invention includes a high-frequency generator, a heating chamber that accommodates an object to be heated, an evaporating dish provided in the heating chamber, a water supply port for injecting water into the evaporating dish, and the evaporating dish. a heater device for heating, in high frequency heating apparatus with steam generation function having a control unit for controlling the heater device, said heating device is constituted by two or more heaters prioritized, wherein the control unit The amount of steam from the evaporating dish is adjusted by energizing and controlling the heaters close to the water supply port and other heaters among the heaters in order of priority according to cooking.

By adopting such a configuration, the wattage is larger than that of the conventional apparatus and the prior invention, the speed until evaporation of the dropped water is drastically increased when the water is dropped, and the generated steam is The amount can also be made large. The amount of steam generation can be made variable according to cooking.

  The second invention is characterized in that the heater device is a heater device in which two or more sheathed heaters are embedded in an aluminum die cast, and this is disposed on the back side of the evaporating dish.

By adopting such a configuration, the wattage is larger than that of the conventional apparatus and the prior invention, the speed until evaporation of the dropped water is drastically increased when the water is dropped, and the generated steam is The amount can be large.

  In a third aspect of the present invention, the heater device is a heater device in which the upper surface of an aluminum die cast is an evaporating dish and two or more sheathed heaters are embedded in the lower surface, and the evaporating dish of the heater device is disposed in the evaporating dish corresponding opening. The heater device is attached so as to face.

  With such a configuration, heating of water is further accelerated.

A fourth invention, the control unit, Ri by other heating data, prior characterized by energizing the heating data close to the water inlet to.

  By controlling in this way, the water supplied from the water supply port can be quickly heated and converted into steam.

Fifth invention, the control unit is characterized by energizing the heating data and other heater near the water inlet alternately.

  By controlling in this way, it becomes a heating system that is not biased to only one heater device, so that the energization time of the heater device can be suppressed and the durability can be improved, and the heater heat can be locally applied to the evaporating dish. Can be avoided and thermal deformation of the evaporating dish can be mitigated.

According to a sixth aspect of the present invention, the control unit intermittently or interrupts other heaters that are not heaters close to the water supply port from the continuous heating operation when it is desired to reduce the amount of steam.

  By comprising in this way, a vapor | steam can be rapidly generated at the time of a cooking start, and control which reduces a steam generation amount after that can be made easy.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a high-frequency heating device with a steam generation function of the invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 8 is a diagram for explaining an installation location of the evaporating dish and an arrangement location of a sheathed heater embedded in an aluminum die cast installed on the back side of the evaporating dish in the high-frequency heating device according to the present invention. Fig.8 (a) is a front view which shows the state which opened the opening-and-closing door of the high frequency heating apparatus.

  In FIG. 8A, 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 evaporation pan, and 46 is evaporation. A dish, 47 is a water supply port, and 49 is a circulation fan.

An embodiment in which two or more sheathed heaters are embedded in the aluminum die cast installed on the back side of the evaporating dish 46 according to the present invention will be described. 8 (b) is in view of the case of buried Shizuhi data in parallel to the aluminum die cast 50, 130a and 130b is a sheathed heater embedded in an aluminum die cast 50.

FIG. 8C is a diagram in the case where U-shaped sheathed heaters are embedded facing both ends of the aluminum die cast 50, and 131 a and 131 b are U-shaped sheathed heaters embedded in the aluminum die cast 50. . Sheathed heater 131a are those embedded in the water supply port side.

Figure 8 (d) is buried Shizuhi data laterally aluminum die casting 50, in view of the case of further embedded a U-shaped sheathed heater to the water supply port side, 132a and 132b are embedded in the aluminum die cast 50 It is a seeds heater.

If you need a lot of steam instantaneously depending on the type of food, it is convenient to have two sheathed heaters. In that case, use both, and if you do not need much steam, only one is enough. You will be able to control the steam. As another usage, it is also possible to perform steam adjustment by operating one of them continuously and stopping or intermittently operating the other. Thereafter, the Shizuhi data towards which the continuous heating operation is referred to as a Shizuhi data to prioritize.

  If it is the structure of FIG.8 (b), it is not necessary to limit the sheathed heater energized preferentially every time it cooks to either 130a and 130b, and even if the sheathed heater energized preferentially is determined alternately Good. In this case, since the use time of one sheathed heater can be reduced, durability of the sheathed heater can be improved.

  If it is the structure of FIG.8 (c), it is good to set the sheathed heater to which it energizes preferentially whenever cooking is performed to 131a near a water supply opening. By carrying out like this, the water inject | poured from a water supply port can be heated immediately, and a vapor | steam can be generated quickly.

  If it is the structure of FIG.8 (d), it is good to make the sheathed heater energized preferentially every time it cooks be the U-shaped sheathed heater 132b near a water supply opening. By carrying out like this, the water inject | poured from a water supply port can be heated immediately, and a vapor | steam can be generated quickly.

An example of a conduction type of the two Shizuhi data in FIG.

FIG. 9 (a) shows a diagram in the case where both the energization of two Shizuhi data. When a large amount of steam is required instantaneously, both of the sheathed heaters are used and a heating method as shown in FIG. In this case, when energized by adding the radio wave or other heating data, among the two Shizuhi motor, and stopping the Shizuhi data towards not Shizuhi data to give priority, radio wave used, other heating of data, when the sum of power is large, and to stop both Shizuhi data, when the radio wave, as well as other heater motor is in a state of OFF, and by energizing the Shizuhi data that has been stopped in the order of priority It can be heated by the most suitable heating method for heating food.

If you do not require as much steam in FIG. 9 (b) described energization method of Shizuhi master when energizing the only one of Shizuhi data.

In this case, it is assumed that passing a Shizuhi data to prioritize.

If you do not require as much steam in FIG. 9 (c), it shows a diagram of when energized alternately two Shizuhi data.

By energizing the Shizuhi data alternately, it is possible to reduce the amount of heat for heating the pan, yet, because the energization time of one Shizuhi data can be reduced by half, thereby improving the durability.

Incidentally, the two Shizuhi data are energized alternately, may be provided a delay time between the period from the OFF state Shizuhi other one to the other Shizuhi motor is turned ON. Since the amount of heat Shizuhi data or we Increasing the delay time is reduced, it is possible to reduce the amount of steam.

Further, it is possible to energize the high Shizuhi data priority ahead at the start energization. By carrying out like this, the water inject | poured from a water supply port can be heated immediately, and a vapor | steam can be generated quickly.

After energizing the two Shizuhi data steam cooking at the start in FIG. 9 (d), it shows a diagram of a case of OFF the low priority Shizuhi data. In this case, it is possible to heat the water injected from the water inlet immediately in two Shizuhi data can be generated quickly steam.

( Reference Example 1 )
FIG. 10 is a side sectional view showing a schematic configuration of the heating apparatus according to the present invention, in which A1 is Reference Example 1 of the present invention, A2 is Reference Example 2 , and B is that of the above-described prior invention.

In (A1) of FIG. 10 which shows the reference example 1 , 10 is an apparatus main body housing, 11 is a flat heater apparatus. 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.

  FIG. 11 is an exploded perspective view of the flat heater device, where (A) is an evaporating dish, (B1) is an attachment side of the heater apparatus to the evaporating dish, and (B2) is a perspective view of the back side of the heater apparatus.

  In (A), 20 is a metal evaporating dish, which comprises a dish part with a side surface 21 and a bottom part 22 of the dish, and screw holes 23 and 24 are 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. The other heater device 11 fixes the screw hole 117 and the screw hole 24 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. In addition, the apparatus is downsized.

  The same effect can be obtained even when one heater device in which a plurality of sheathed heaters are embedded in an aluminum die cast is installed on the back side of the evaporating dish.

( Reference Example 2 )
In (A2) of FIG. 10 which shows the reference example 2 , 10 is an apparatus main body housing | casing, 12 is a deep dish container-shaped heater apparatus. The deep dish container heater 12 finishes a heater apparatus in which a sheathed heater is embedded in an aluminum die cast into a deep dish container shape, and on the other hand, a part of an evaporating dish made of iron plate is punched out and the punched part is It is characterized by fitting a deep dish container heater device.

  FIG. 12 is an exploded perspective view of a deep dish container heater device, where (A) is a metal plate with the evaporating dish portion cut out, (B1) is the attachment side of the heater device to the metal plate, and (B2) is the heater device. It is each perspective view of a back side.

  In (A), reference numeral 30 denotes an evaporating dish-corresponding plate provided with a punched-out portion 31 obtained by punching a portion corresponding to the evaporating dish from the metal plate 32. 126 is a metal seal and 33 is a screw hole.

In (B1), reference numeral 12 denotes a heater device made of aluminum die cast, which is composed of an evaporating dish portion 121 and a mounting portion 122 that face the punched portion 31. 12 3 cast a sheathed heater, 124 is water pipe.

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 123 is cast.

  In addition, two raised portions 12a and 12b are formed on the back side of the aluminum die cast, and an insertion hole 125 for inserting a thermistor described later is formed in the first raised portion 12a on the left side in the drawing. ing.

  Further, a water supply pipe 124 described later is fixed to the second raised portion 12b on the right side in the drawing.

With such a configuration, sheathed since heat generated by the heater 12 3 will be heat conduction directly to the evaporation dish 121 in the aluminum die casting, conventional tube heater 13 shown in FIG. 8 (B) Compared with the radiant heating device 15 using the reflector 14, the heat conduction is remarkably increased, and the heat conduction loss is further reduced as compared with the first embodiment shown in FIG. By increasing, heating of water becomes faster, and thus cooking by steam becomes faster. In addition, the apparatus is downsized.

  Thus, according to the present invention, since the time required for heating is shorter than before, the time for heating by 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.

  In addition, about the arrangement | positioning position of this sheathed heater, not only the pumpless system by siphon but a pump system is effective similarly.

  When adopting a pumpless system using a siphon, a heater device in which the water supply pipe shown in FIG. 11 or 12 is fixed to an aluminum die cast may be used.

  FIG. 13 is a diagram for explaining the operation of a pumpless system using a siphon.

  In FIG. 13, the steam supply mechanism 91 includes one water storage tank 92 in which the apparatus main body 90 is detachably mounted, two metal evaporating dishes 20 provided in the heating chamber 93, and these metal evaporating dishes. A heater device 94 that evaporates water on the metal evaporating dish 20 by heating 20, a water supply path 95 that guides the water in the water storage tank 92 to the evaporating dish 20 through a heating area by the heater device 94, and a water storage tank 92. And a water stop valve 96a on the tank side and a water stop valve 96b on the water supply path side that are provided at the connection between the water supply path 95 and the water supply tank 95 to prevent leakage of water in the water storage tank 92 and the water supply path 95 when the water storage tank 92 is removed. And a check valve 97 that is disposed downstream of the water stop valve 96b on the water supply path side and prevents the reverse flow of water from the water supply path 29 to the water storage tank 92.

  The water supply path 95 is arranged below the bottom plate 98 of the heating chamber 93 so as to pass through a base end pipe portion 95a connected to the connection port 22b of the water storage tank 92 and a heating area by the heater device 94 from the base end pipe portion 95a. A horizontal piping portion 95b to be searched, a vertical piping portion 95c that rises vertically from the front end of the horizontal piping portion 95b to the side of the heating chamber 93, and an upper end of the vertical piping portion 95c that extends above the water supply tray 45. The upper pipe part 95e for dropping the water pumped from the vertical pipe part 95c onto the water supply tray 45, the air intake port 95d, and the water outlet 95f that forms the tip of the upper pipe part 95e.

  The horizontal piping portion 95b is connected to the aluminum die cast 94a of the heater device 94 so that heat from the heater device 94 is quickly conducted, and the water in the horizontal piping portion 95b expands and is supplied to the evaporating dish 94. The

  Here, the principle of steam generation will be described in detail.

  When the water storage tank 92 is inserted into the tank housing portion 35 and the horizontal piping portions 95b and 95b are filled with water and the heater device 94 generates heat, the water in the piping is heated at the contact portion with the aluminum die cast 94a. When supplied, the water expands.

  Since the check valve 97 temporarily stops the pressure of water in the expanding pipe, the pressure is directed in the direction of the vertical pipe section 95c, and the expanded water passes through the upper pipe section 95e from the water outlet 95f. It is dripped and supplied to the evaporating dish 20.

  The proximal end pipe part 95a is equipped with a pipe-side water stop valve 96b for preventing water leakage from the horizontal pipe part 95b side when the water storage tank 92 is removed, and is connected to the horizontal pipe part 95b. Is equipped with a check valve 47 for preventing a backflow from the horizontal piping portion 95b due to thermal expansion of water in the horizontal piping portion 95b.

  As shown in FIG. 13, the upper end of the vertical piping portion 95 c to which the upper piping portion 95 e is connected is set at a position higher than the highest water level position Hmax in the water storage tank 92. This is to prevent the water storage on the water storage tank 92 side from flowing out to the upper piping part 95e side carelessly and continuously due to the communication pipe action.

  Further, the water supply path 95 is connected to the water storage tank 92 via the proximal end piping portion 95a at a position further lower than the minimum water storage level Hmin in the water storage tank 92. This is because the water stored in the water storage tank 92 can be taken into the water supply channel 95 side without remaining.

  Since the water supplied to the evaporating dish 20 is heated by the heat generated by the heater device 94, the time required from the time when it is supplied to the evaporating dish 20 until the generation of steam can be shortened, and rapid steam heating is performed. Is possible.

  If the heating is interrupted, the water in the vertical pipe portion 95c in the water supply passage 95 does not expand and cannot reach the air intake port 95d, and atmospheric pressure enters the pipe from the air intake port 95d, and the water supply is stopped.

  As described above, when an electric current is passed through the sheathed heater, the aluminum die cast is heated rapidly, the water in the water supply pipe is also rapidly heated and expanded, and this expanded water passes through the atmospheric pressure inlet 95d in the pipe. Finally, the siphon operation is started by reaching a water supply port provided at a position below the reference water surface, and water from the water discharge tank is supplied to the evaporating dish from the water supply port at the tip of the water supply pipe. The water supply continues while heating is performed. If the heating is interrupted, the water in the water supply pipe does not expand and cannot reach the air intake port 95d, and atmospheric pressure enters the pipe from the air intake port 95d and the water supply is stopped.

  As described above, when the heater device according to the present invention shown in FIG. 11 or FIG. 12 is used, rapid high-temperature heating can be performed, so that water in the water supply pipe can rapidly expand greatly, and therefore pumpless drive using a siphon is the first time. It becomes possible.

  As described above, since the high-frequency heating apparatus with a steam generation function according to the present invention can adjust the amount of steam, a steam heating method according to the object to be heated can be realized. It can also be applied to uses such as a heater for heat-treating an object.

The front view which shows the state which opened the door of the high frequency heating apparatus with a steam generation function of 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 The figure explaining the installation location of the evaporating dish in the high frequency heating apparatus which concerns on 1st Embodiment, and the arrangement | positioning location of the sheathed heater embedded inside the aluminum die-casting installed in the back side of the evaporating dish, (a) High frequency heating apparatus The front view which shows the state which opened and closed the door (b) The figure which buried the sheathed heater in parallel with the aluminum die-casting (c) The figure which faced both ends of the aluminum die-casting, and the figure embedded the U-shaped sheathed heater (d ) A figure in which a sheathed heater is embedded horizontally in an aluminum die cast, and a U-shaped sheathed heater is embedded on the water supply side. FIG. 3 is an example of a timing chart for energizing two two sheathed heaters in the high-frequency heating device according to the first embodiment, where (a) is a timing chart when energized at the same time, and (b) is a high priority among the two sheathed heaters. The timing chart (c) when only the steam heater is energized is the timing chart (d) when the two sheathed heaters are alternately energized, and the two low-priority steam heaters are shut off after the two sheathed heaters are energized simultaneously. Timing chart BRIEF DESCRIPTION OF THE DRAWINGS It is side sectional drawing which shows schematic structure of the heating apparatus which concerns on this invention, (A1) is side sectional drawing which shows 1st Embodiment of this invention (A2) is side sectional drawing which shows 2nd Embodiment ( B) is a side sectional view showing the above-described prior invention. It is a disassembled perspective view of the flat heater device which concerns on 1st Embodiment, (A) is a disassembled perspective view of an evaporating dish (B1) is a perspective view (B2) which shows the attachment side to the evaporating dish of a heater apparatus (B2) is a heater Perspective view seen from the back side of the device It is a disassembled perspective view of the deep-plate container-shaped heater apparatus which concerns on the reference example 1 , (A) is a perspective view which shows the attachment side to the metal plate of a heater plate (B1) which shows the metal plate which perforated the evaporating dish part (B2) is a perspective view seen from the back side of the heater device. Schematic configuration diagram of the steam supply mechanism

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Apparatus main body housing | casing 11 Flat heater apparatus 11a, 11b Raised part 12 Deep dish container heater apparatus 12a, 12b Raised part 19 Screw 20 Metal evaporating dish 21 Side of the dish 22 Bottom part 23 Screw hole 30 Evaporating dish corresponding plate 31 Cutting out Portion 32 Metal plate 33 Screw hole 45 Evaporating dish 50 Thermistor 90 Device body 91 Steam supply mechanism 92 Water storage tank 93 Heating chamber 94 Heater device 95 Water supply path 95a Base end piping portion 95b Horizontal piping portion 95c Vertical piping portion 95d Air intake port 95e Upper portion Piping portion 95f Water outlet 96 Water stop valve 96a Tank side water stop valve 96b Water supply passage side water stop valve 97 Check valve 98 Bottom plate 111 Aluminum die-cast contact portion 111a Thermistor accommodation hole 112 Mounting portion 113 U-shaped sheathed heater 114 Water supply Pipe 117 Screw hole 121 Evaporating dish part 123 Shaped sheathed heater 124 water supply pipe 126 metal seal

Claims (6)

A high-frequency generator, a heating chamber that accommodates an object to be heated, an evaporating dish provided in the heating chamber, a water supply port for injecting water into the evaporating dish, a heater device that heats the evaporating dish, in high frequency heating apparatus with steam generation function having a control unit for controlling the heater device, said heating device is constituted by two or more heaters prioritized, the control unit, the one of the heater A high-frequency heating apparatus with a steam generating function, wherein the amount of steam from the evaporating dish is adjusted by energizing and controlling a heater close to a water supply opening and other heaters in order of priority according to cooking. The high-frequency heating device with a steam generating function according to claim 1, wherein the heater device is constructed by embedding two or more sheathed heaters in an aluminum die cast, and the heater device is disposed on the back side of the evaporating dish. The heater device is constituted by evaporating the upper surface of an aluminum die cast with two or more sheathed heaters embedded in the lower surface, and the heater device is attached so that the evaporating plate of the heater device faces the opening corresponding to the evaporating plate. The high frequency heating apparatus with a steam generating function according to claim 1. The high-frequency heating apparatus with a steam generating function according to claim 1, wherein the control unit energizes a heater near the water supply port prior to the other heaters. The high-frequency heating apparatus with a steam generating function according to claim 1, wherein the control unit alternately energizes a heater close to the water supply port and another heater. The high-frequency heating apparatus with a steam generation function according to claim 1, wherein the control unit intermittently or interrupts other heaters that are not heaters close to the water supply port from the continuous heating operation when it is desired to reduce the amount of steam.

Images