JP2004347153A - Microwave heating device with steam generating function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a steam supply mechanism for continuously generating steam while supplying heat energy in well balanced relation between a heat carrier part and an evaporation part. <P>SOLUTION: The steam supply mechanism comprises a heating means body 111 in which a heating means 27 is embedded, a carrier pipe heating part 113 for boiling liquid in a carrier pipe 112, and a heat transfer control part 114 formed of a material having smaller heat conductivity than a material for the evaporation part 25. The deposition of scales with local boiling in the carrier pipe is suppressed by reducing a heat transfer amount to the carrier pipe 112 while setting the heating means at a high temperature for securing heat energy to be supplied to side of evaporation. Thus, the steam supply mechanism continuously generates the steam having a high temperature of nearly 100°C while supplying heat energy in well balanced relation between the carrier part and the evaporation part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention includes a high-frequency generation unit that outputs high-frequency waves into a heating chamber that accommodates an object to be heated, and a steam supply mechanism that supplies steam into the heating chamber, and supplies at least one of the high-frequency waves and steam to the heating chamber. High-frequency heating device with a steam generating function to heat-treat the object to be heated.
[0002]
[Prior art]
A high-frequency heating device including a high-frequency generator that outputs high-frequency waves in a heating chamber that accommodates an object to be heated can efficiently heat the object to be heated in the heating chamber in a short period of time. It has rapidly spread as a microwave oven, a device.
[0003]
However, heating by high-frequency heating alone has inconveniences such as a limited range of cooking.
[0004]
Therefore, a high-frequency heating device that enables oven heating by adding an electric heater that generates heat in the heating chamber has been proposed. In recent years, a steam supply mechanism that supplies heating steam into the heating chamber has been added, and high-temperature steam has been added. There has been proposed a high-frequency heating device with a steam generation function that also enables heating cooking by using a heating method (see, for example, Patent Document 1).
[0005]
[Patent Document 1]
JP-A-54-115448
[0006]
[Problems to be solved by the invention]
However, the steam supply mechanism in the conventional high-frequency heating device has a water storage tank detachably mounted on the device main body, a water supply tray (evaporator) provided in the heating chamber, and heats the water supply tray (evaporator). Heating means for evaporating water on the water supply tray (evaporator), and a dedicated pump means for supplying water from the water storage tank to the water receiver (evaporator). For this reason, there has been a problem that the configuration becomes complicated or large.
[0007]
Further, in the conventional steam supply mechanism using a dedicated pump means, in order to control the supply amount of steam to the heating chamber, it is necessary to control the supply amount by the pump means simultaneously with the temperature control of the heating means. In addition, there is a problem that control processing required for controlling the supply amount of steam becomes complicated.
[0008]
In addition, the water stored in the water storage tank is sent to the water supply tray (evaporator) by a dedicated pump means, without any preheating during that time (to avoid pump failure due to hot water). Since the water is supplied, the temperature of the water supplied to the water supply tray (evaporation unit) is low, and there is a problem that it takes a long time until the heating unit heats the water supply tray (evaporation unit) to generate steam.
[0009]
Further, in the case of continuously generating steam, a balance between supply of heat energy to the evaporator and supply of heat energy to the transfer pipe is an important development task.
[0010]
That is, when the heat supply to the transfer pipe side is large, water accumulation in the evaporating section occurs. Then, low-temperature steam is generated or the amount of vaporization becomes insufficient. In order to evaporate without leaving moisture in the evaporator, it is necessary to increase the heat capacity of the evaporator or to operate the heating means after stopping the supply of water. The rise time until the occurrence is long, and the latter requires a method such as temperature detection.
[0011]
On the other hand, when the heat supply to the evaporating section is large, the amount of heat supplied to the transfer pipe side is insufficient, and a transfer failure occurs. Then, if the conveyance failure occurs, the load for consuming the heat generated by the heating unit is eliminated, and the heating unit itself is heated by self-heating. As the temperature rises, the amount of heat supplied to the transfer pipe increases, and when the heat exceeds a certain threshold, sudden local boiling occurs to transfer water. As a result, the presence of a load that consumes heat in the evaporator causes the heating unit to return to the desired temperature. When the temperature is lowered to the expected temperature, the conveyance failure again occurs. By repeating these phenomena, there is a problem in that the scale adheres to the inside of the transport pipe due to rapid local boiling, causing clogging of the transport pipe.
[0012]
The present invention has been made in view of the above-described problems, and an object of the present invention is to eliminate the need for a dedicated pump means for supplying water from a water storage tank to a water supply tray (evaporator), and to omit the pump means. The structure and size of the steam supply mechanism can be simplified and downsized, and the control processing required for controlling the steam supply amount can be simplified. It is still another object of the present invention to provide a high-frequency heating apparatus with a steam generating function, which can maintain a good balance of heat energy supply between the conveying section side and the evaporating section side and continuously generate steam.
[0013]
[Means for Solving the Problems]
In order to solve the above-mentioned conventional problems, a high-frequency heating device with a steam generation function of the present invention includes a high-frequency generation unit that outputs a high frequency to a heating chamber that accommodates an object to be heated, and a steam that supplies heating steam to the heating chamber. A high-frequency heating device with a steam generating function for heating the object to be heated by supplying at least one of high-frequency waves and heating steam to the heating chamber, wherein the steam supply mechanism comprises: A water storage tank detachably mounted on the heating chamber, an evaporator provided in the heating chamber, heating means for heating the evaporator to evaporate water, and energy generated by the heating means for water in the water storage tank. A heat transfer unit that causes local boiling to transfer water to the evaporating unit, and a water supply passage that leads to the evaporating unit via the heating area, and has a lower thermal conductivity than a material forming the evaporating unit In which the heat transfer control unit comprising a charge has to control the amount of heat energy transferring heat to the heat transport unit from the heating means be interposed between the heating means and the heat transport unit.
[0014]
In the high-frequency heating apparatus with the steam generating function configured as described above, the water supply path is routed so as to pass through a heating area by the heating means, and the pump is driven by thermal expansion of water in the water supply path due to heat generated by the heating means. It has a function and does not require a dedicated pump means for supplying water from the water storage tank to the evaporator.
[0015]
Therefore, simplification and downsizing of the configuration of the steam supply mechanism can be realized by omitting the dedicated pump means.
[0016]
In addition, since the water supply to the evaporator is performed by the heat generated by the heating means, the control of the steam supply amount can be realized only by controlling the heat generation operation of the heating means, and the dedicated pump means is controlled. Compared with the conventional one which had to be performed, the control processing required for controlling the supply amount of steam can be simplified.
[0017]
Furthermore, since the water supplied to the evaporator is in a state of being heated by the heat generated by the heating means, the time required from the supply to the evaporator to the generation of steam can be shortened, and rapid steam heating can be achieved. Becomes possible.
[0018]
In addition, the temperature of the evaporator is set to a high temperature, and the temperature of the heat transfer unit can be set to a temperature range slightly higher than 100 ° C that enables boiling, so that the transferred water is surely evaporated quickly while maintaining the transfer function. It is possible to suppress the adhesion of scale in the transfer pipe, which is the heat transfer section, and to continuously generate high-temperature steam.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
The invention according to claim 1 includes a high-frequency generation unit that outputs a high-frequency wave into a heating chamber that accommodates an object to be heated, and a steam supply mechanism that supplies heating steam into the heating chamber. A high-frequency heating device with a steam generating function for supplying any one of the heating objects to the heating chamber to heat the object to be heated, wherein the steam supply mechanism includes a water storage tank detachably mounted on a device main body; An evaporating unit installed in the room, a heating unit for heating the evaporating unit to evaporate water, and locally boiling the water in the water storage tank by energy generated by the heating unit to convey water to the evaporating unit. A heat transfer unit, comprising a water supply passage leading to the evaporating unit via the heating area, and a heat transfer control unit made of a material having a smaller thermal conductivity than a material forming the evaporating unit; The heating means Since the water is supplied to the evaporating section by the generated heat of the heating means, the control of the steam supply amount is realized only by controlling the heating operation of the heating means. It is possible to simplify the control process required for controlling the supply amount of steam, and the water supplied to the evaporating section is reduced by the heating means, as compared with the conventional one which had to control a dedicated pump means. Since the temperature is raised by the generated heat, the time required from the supply to the evaporator to the generation of steam can be shortened, and rapid steam heating becomes possible.
[0020]
Further, the temperature of the heat transfer unit can be set to a temperature range slightly higher than 100 ° C. that enables boiling by the heat energy from the heating means, so that the transfer function can be maintained, and the evaporating unit has a higher temperature than the heat transfer unit. Therefore, the conveyed water can be reliably and quickly evaporated. Further, it is possible to suppress the adhesion of scale in the transfer pipe and continuously generate high-temperature steam.
[0021]
According to a second aspect of the present invention, in particular, the heat transfer control unit according to the first aspect reduces the amount of heat energy supplied to the heat transfer unit from the heating unit to 1/1 / the amount of heat energy supplied to the evaporation unit. When the water temperature is set to 8 or less, the evaporation amount can be stably performed because the amount of transported water does not exceed the evaporation amount and the evaporating section can maintain a high temperature in the water temperature range of 5 ° C to 30 ° C.
[0022]
According to a third aspect of the present invention, in particular, the heat energy of the heating means is uniformly distributed to the heat transfer section in the heat transfer control section through a material having a higher heat conduction characteristic in the surface direction than in the thickness direction. In other words, the heat transfer performance in the transfer pipe becomes uniform without causing a difference in temperature distribution, that is, the stable liquid transfer capability and the scale adhesion in the transfer pipe can be further suppressed.
[0023]
The invention according to claim 4 is particularly configured such that a sheathing heater is embedded in an aluminum die-cast in the heating means according to claims 1 to 3, and a water-repellent treatment such as fluorine having a concave evaporation portion is performed. The steel plate is joined to the top surface of the die cast, and the heat transfer unit is joined to the side or bottom surface of the aluminum die cast via a heat transfer control unit made of stainless steel. By using a material having a small thermal conductivity, a temperature gradient in the heat transfer control unit can be easily and reliably realized. Further, by covering the sheathed heater, which is a heating means, with an aluminum die-cast, the amount of heat can be maintained, and stable steam generation performance and liquid transfer capability can be secured.
[0024]
According to the fifth aspect of the present invention, in particular, by making the evaporating section according to the fourth aspect detachable from aluminum die-casting, it is possible to perform a round washing (cleaning such as washing with water) with the evaporating section removed. it can. Therefore, cleaning of the evaporating section can be performed relatively easily.
[0025]
According to a sixth aspect of the present invention, in particular, the heating means according to any one of the first to third aspects has a structure in which a sheathed heater is embedded in an aluminum die cast, and the evaporating section has an integral structure in which a concave portion is provided on an upper surface of the die cast. The transfer section is joined to the side or bottom of the aluminum die-cast through a heat transfer control section made of stainless steel. In other words, the transfer section is made by using a material with lower thermal conductivity than the evaporation section. A temperature gradient in the heat control unit can be easily and reliably realized. In addition, by forming the evaporating portion integrally with the aluminum die cast, the heat energy of the heating means can be efficiently transferred, and stable steam generation performance and liquid transfer capability can be secured.
[0026]
According to the seventh aspect of the present invention, since the surface of the evaporator according to the sixth aspect is subjected to a water-repellent treatment such as fluorine to improve the cleanability of the evaporator, the amount of heat transferred to the evaporator can be improved. It is possible to prevent the amount of heat transfer to the heat transfer unit from increasing due to the decrease. Therefore, the scale adhesion is suppressed without an excessive increase in the amount of heat transfer into the heat transfer section piping.
[0027]
The invention according to claim 8 can suppress severe local boiling in the pipe by forming the pipe of the heat transfer unit according to claim 4 from aluminum or copper having a high thermal conductivity. Therefore, the stability of the liquid transfer capacity and the generation of a boiling sound at the time of local boiling can be prevented.
[0028]
According to the ninth aspect of the invention, in particular, by increasing the inner surface area of the heat transfer unit pipe as compared with the outer surface area of the fourth to eighth aspects, severe local boiling in the pipe can be suppressed. Therefore, the stability of the liquid transfer capacity and the generation of a boiling sound at the time of local boiling can be prevented.
[0029]
According to the tenth aspect of the invention, in particular, by applying a water-repellent treatment such as fluorine to the inner surface of the pipe of the heat transfer unit according to the ninth aspect, scale adhesion in the pipe is suppressed.
[0030]
【Example】
Hereinafter, a high-frequency heating device with a steam generating function according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
[0031]
(Example 1)
1 and 2 are external views of one embodiment of a high-frequency heating device with a steam generating function according to the present invention.
[0032]
The high-frequency heating apparatus 100 with a steam generating function according to the embodiment is used as a microwave oven capable of high-frequency heating and heating by heating steam for heating and cooking foods. A high-frequency generating means (magnetron) 5 for outputting high-frequency waves into the chamber 3 and a steam supply mechanism 7 for supplying heating steam into the heating chamber 3 are provided, and at least one of the high-frequency waves and the heating steam is supplied to the heating chamber 3. Then, the object to be heated in the heating chamber 3 is heated.
[0033]
The heating chamber 3 is formed inside a box-shaped main body case 10 having an open front, and an opening / closing door 13 having a light-transmitting window 13 a for opening and closing a heated object outlet of the heating chamber 3 is provided on the front surface of the main body case 10. Is provided. The lower end of the door 13 is hinged to the lower edge of the main body case 10 so that the door 13 can be opened and closed in the up-and-down direction. Can be shown open.
[0034]
A predetermined heat insulating space is provided between the wall surfaces of the heating chamber 3 and the main body case 10, and a heat insulating material is loaded in the space as needed.
[0035]
In particular, the space behind the heating chamber 3 is a circulation fan chamber that houses a circulation fan that stirs the atmosphere in the heating chamber 3 and a drive motor (not shown) for the circulation fan. The partition wall defines the chamber 3 and the circulation fan chamber.
[0036]
Although not shown, a partition wall 15 which is a rear wall of the heating chamber 3 has a ventilation hole for taking air from the heating chamber 3 side to the circulation fan chamber side, and a suction hole from the circulation fan chamber side to the heating chamber 3 side. And a ventilation port for blowing air to the air are provided so as to distinguish the formation area. Each ventilation hole is formed as a number of punch holes.
[0037]
In the case of the present embodiment, as shown in FIG. 2, the high-frequency generation means (magnetron) 5 is disposed in a space below the heating chamber 3, and is located at a position for receiving the high-frequency generated from the high-frequency heating device 5. Is provided with a stirrer blade 17. By irradiating the rotating stirrer blade 17 with the high frequency from the high frequency generator 5, the high frequency is supplied to the heating chamber 3 while being stirred by the stirrer blade 17. The high-frequency generator 5 and the stirrer blades 17 are not limited to the bottom of the heating chamber 3 but may be provided on the upper surface or the side surface of the heating chamber 3.
[0038]
As shown in FIG. 3, the steam supply mechanism 7 includes one water storage tank 21 detachably provided in the apparatus main body, two water supply trays (evaporation units) 25 provided in the heating chamber 3, Heating means 27 for heating the water supply tray (evaporation unit) 25 to evaporate the water on the water supply tray (evaporation unit) 25, and water in the water storage tank 21 via a heating area of the heating means 27. A tank for preventing water leakage from the water storage tank and the water supply channel when the water storage tank 21 is detached when the water storage tank 21 is removed. A water stop valve 33 on the water supply side and a water stop valve 45 on the water supply path side; and a check valve 47 disposed downstream of the water stop valve 45 on the water supply path side to prevent back flow of water from the water supply path 29 to the water storage tank 21. It is comprised including.
[0039]
The characteristic configuration of the water supply channel 29 composed of the two systems described above will be described in detail later, but the distance from the heating area of each heating means 27 to the water outlet 29e at the tip of the water supply channel is set to be equal. It is in.
[0040]
In addition, as shown in FIG. 4, the steam supply mechanism 7 may be configured to supply water from one system water supply passage 29 to one water supply tray (evaporator) 25 to generate steam.
[0041]
In the present embodiment, the water storage tank 21 is a flat rectangular parallelepiped cartridge type excellent in handleability and can be easily attached to and detached from the apparatus main body (main body case 10). As shown in FIG. 1, the main body case 10 is inserted and attached to a tank storage portion 35 attached to the side surface of the main body case 10 so as to be hardly damaged.
[0042]
As shown in FIG. 5, the tank storage section 35 is hinged on the rear end side to the main body case 10. When the engagement of the front end section indicated by the arrow (a) in FIG. As shown by the arrow (b) in b), the front end side rotates outward, and the tank insertion port 36 at the front end is exposed.
[0043]
With the tank insertion opening 36 exposed, the water storage tank 21 can be withdrawn in the direction indicated by the arrow (c) in FIG.
[0044]
The mounting of the water storage tank 21 is completed by inserting the water storage tank 21 into the tank insertion port 36 in a direction opposite to the extracting direction.
[0045]
As shown in FIG. 6, the water storage tank 21 includes a flat rectangular parallelepiped container body 22 having an open top and an opening / closing lid 23 that covers an upper opening of the container body 22. The container body 22 and the opening / closing lid 23 are formed of resin.
[0046]
The container body 22 is formed of a transparent resin so that the remaining amount of water inside can be visually recognized, and scales 22a indicating the remaining water level are provided on both side surfaces of the container body 22. As shown in FIGS. 5 and 7, the portion provided with the scale 22 a is exposed to the outside through a cutout window 37 formed at the front edge of the tank storage portion 35, and is externally provided in the water storage tank 21. The remaining amount of water is made visible.
[0047]
As shown in FIG. 6, a cylindrical connection port 22 b that fits and connects to the water supply channel 29 is protruded at a position near the lower portion on the back surface of the container body 22. As shown in FIG. 8A, the connection port 22b is provided with a water stop valve 33 on the tank side for closing the connection port 22b when the water storage tank 21 is taken out of the apparatus main body and preventing outflow of stored water. Equipped.
[0048]
The water supply tray (evaporator) 25 of the present embodiment is formed by forming a depression for receiving water in a part of the bottom plate 4 of the heating chamber 3 and is integral with the bottom plate 4.
[0049]
As described above, the water supply tray (evaporator) 25 is provided on the left and right of the rear portion of the bottom plate 4 in the present embodiment.
[0050]
The heating means 27 is a sheathed heater that is arranged in contact with the lower surface of each water supply tray (evaporator) 25, and is an aluminum die-cast attached to the back surface of the water supply tray (evaporator) 25 as shown in FIG. The structure is such that the heater main body is assembled to an assembling block 27a made of aluminum. In the case of the present embodiment, a thermistor 41 as a temperature detection sensor for detecting the temperature of the heating means 27 is connected between a pair of electrodes 27b and 27c at both ends of the heater extending from the assembly block 27a.
[0051]
The thermistor 41 is buried in the assembly block 27a between the pair of electrodes 27b and 27c. The detection signal of the thermistor 41 is monitored by a control circuit (not shown), and is used for detecting the remaining amount 0 of the water storage tank 21 and controlling the operation of the heating means 27 (heat generation amount control).
[0052]
As shown in FIG. 10, as shown in FIG. 10, when water is supplied from the water storage tank 21 and the water supply tray (evaporation unit) 25 is filled with water, the detected temperature level increases as the temperature of the heating unit 27 increases. . However, when water is exhausted in the water supply tray (evaporator) 25 indicated by the symbol a in the figure, since the heating means 27 is energized, the detected temperature level sharply increases, and the upper limit reference value indicated by the b Exceeds.
[0053]
The control circuit (not shown) cuts off the power supply to the heating means 27 when the temperature exceeds the upper limit reference value. At this point, although there is an overshoot, the detected temperature level of the thermistor 41 drops. Eventually, when the detected temperature level of the thermistor 41 reaches the lower limit reference value indicated by c, the control circuit again energizes the heating means 27 to heat the heater. However, since there is no water in the water supply tray (evaporator) 25, the detected temperature level of the thermistor 41 rises again and exceeds the upper limit reference value indicated by d. At this point, the control circuit determines that there is no water in the water supply tray (evaporating section) 25 and the heating means 27 is in the state of baking, and as shown by e, cuts off the power supply to the heating means 27. Control is performed to issue an alarm and stop the steam heating process.
[0054]
In the present embodiment, as described above, a single thermistor can control the generation of the steam amount and detect an abnormality when the water in the water supply tray (evaporator) runs out.
[0055]
In addition, the above-described control makes it possible to extend the life of the heater and to use the water supply tray (evaporator) within the allowable temperature range, thereby preventing the fluororesin-coated surface of the water supply tray (evaporator) from deteriorating.
[0056]
In the present embodiment, as described above, when the thermistor detects the temperature at which the upper limit reference value is reached twice by repeating the cycle of turning on and off the heater, it is determined that there is no water in the water supply tray (evaporating section). The configuration is not limited to two times, and the detection may be performed a plurality of times to make a determination.
[0057]
Further, in the present embodiment, a sheath heater is used as the heating means 27, but a glass tube heater, a plate heater, or the like may be used instead of the sheath heater.
[0058]
As shown in FIGS. 3 and 9, the water supply passage 29 includes a base pipe portion 29 a branched and connected to the connection port 22 b of the water storage tank 21 in two systems. A horizontal pipe portion 29b routed under the bottom plate 4 of the heating chamber 3 so as to pass through the heating zone of the heating chamber 3, and a vertical pipe portion 29c which rises vertically to the side of the heating chamber 3 from the tip of the horizontal pipe portion 29b. An upper pipe section 29d extending from the upper end of the vertical pipe section 29c to above each water supply tray (evaporation section) 25, and dropping water fed from the vertical pipe section 29c into the water supply tray (evaporation section) 25; A water outlet 29e which forms the tip of each upper pipe portion 29d.
[0059]
As shown in FIG. 3, the horizontal pipe portion 29b is piped so as to be in contact with the assembly block 27a of the heating means 27, and the contact portion 30 with the assembly block 27a shown in FIG. Area.
[0060]
Therefore, the characteristic configuration of the two systems of the steam supply mechanism 7 described above indicates that the lengths of the pipe paths from the respective contact portions 0 to the respective water outlets 29e are set to be equal.
[0061]
In the present embodiment, as described above, the horizontal pipe portions 29b of the respective water supply passages 29 are set to a heating area by the heating means 27, and the respective horizontal pipes thermally expanded by receiving heat conduction by the heat generated by the respective heating means 27. The water in the section 29b is supplied to each water supply tray (evaporation section) 25.
[0062]
When the water storage tank 21 is inserted into the tank storage section 35 and the heating means 27 generates heat in a state where the horizontal pipe section 29b is filled with water, contact with the assembling block 27a occurs. In the section 30, heat is supplied to the water in the pipe to expand the water. Since the check valve 47 temporarily stops the pressure of the water in the expanding pipe, the pressure is directed only toward the vertical pipe section 29c. Then, the expanded water passes through the upper pipe portion 29d, is dropped from each water outlet 29e, and is supplied to the water supply tray (evaporation unit) 25.
[0063]
At this time, since the distance from the contact portion 30 with the assembly block 27a of each water supply passage 29 to each water outlet 29e is set to be equal, each horizontal piping portion 29b has heating means of the same specification. By applying 27, the same amount of heat can be applied from the contact portion 30, whereby water can be uniformly supplied to each water supply tray (evaporation portion) 25.
[0064]
Further, if the distance from the contact portion 30 to each water outlet 29e is set to be equal, the temperatures of the water supply passages 29 and the contact portion 30 can be made equal, and the steam generation control can be easily performed.
[0065]
Since the water supplied to the water supply tray (evaporator) 25 has been heated by the heat generated by each heating means 27, the time required from the supply to the water supply tray (evaporator) 25 to the generation of steam is reduced. And rapid steam heating becomes possible.
[0066]
If the heating is interrupted, the water in the vertical pipe portion 29c in each water supply passage 29 does not expand, cannot reach the air intake 29f, the atmospheric pressure enters the pipe from the air intake 29f, and the water supply is stopped. .
[0067]
As shown in FIG. 8A, the proximal pipe portion 29a is connected to the horizontal pipe portion 29b when the water storage tank 22 is detached from the proximal circular pipe portion 43 into which the connection port 22b of the container body 22 is fitted. A water stop valve 45 is provided on the pipe side to prevent water leakage from the horizontal pipe part 29b, and a connection part with the horizontal pipe part 29b is provided from the horizontal pipe part 29b side due to thermal expansion of water in the horizontal pipe part 29b. A check valve 47 for preventing backflow (flow in the direction of arrow (d) in the figure) is provided.
[0068]
The water stop valve 33 on the tank side and the water stop valve 45 on the tube side have springs 33b, 45b for urging the valve bodies 33a, 45a, respectively, in opposite directions, and the connection port 22b of the container body 22 is connected to the base circular pipe. When properly fitted to the portion 43, as shown in FIG. 8 (b), the distal ends of the two valve bodies 33a, 45a abut against each other, and oppose each other against the urging force of the springs 33b, 45b. Displace to open the channel.
[0069]
An O-ring 49 is provided on the outer peripheral portion of the connection port 22 b of the container body 22 as a seal material for closing a gap between the container main body 22 and the base circular pipe portion 43.
[0070]
The state shown in FIG. 8A is a state in which the connection port 22b of the container body 22 is not fitted to the base end circular pipe portion 43, and the water stop valve 33 on the tank side and the water stop valve 45 on the tube side are still in use. Are in a state where the flow path is closed.
[0071]
In a state where the connection port 22b of the container main body 22 is disengaged from the base circular pipe portion 43, the water supply channel 29 side is sealed by the water stop valve 45 on the pipe side, and the backflow of water in the water supply channel 29 is prevented. It is reliably prevented. That is, as shown in FIG. 3, when the water storage tank 21 is inserted into the tank storage portion 35, the water flows into the vertical pipe portions 29 c of each water supply passage 29 to the same water level as the water storage tank 21. Under such water pressure, even if the water storage tank 21 is pulled out, the water stop valve 45 on the pipe side can prevent the backflow of water.
[0072]
A small amount of water remaining between the water stop valve 33 on the tank side and the water stop valve 45 on the pipe side when the water storage tank 21 is pulled out from the tank storage part 35 is provided on the bottom part on the back side of the tank storage part 35. A concave portion 51 for receiving the dripping is provided, and the concave portion 51 is provided with a water absorbing sheet 53 for absorbing the dropped water. As the water-absorbing sheet 53, for example, a nonwoven fabric having excellent water-absorbing properties is used.
[0073]
As shown in FIGS. 3 and 4, the upper end of the vertical pipe portion 29 c to which the upper pipe portion 29 d is connected is located at the highest level H of the stored water in the water storage tank 21. _max It is set at a higher position. This is to prevent the water stored in the water storage tank 21 from inadvertently and continuously flowing out to the upper pipe portion 29d by the communication pipe action.
[0074]
Further, the water supply passage 29 is connected to the water storage tank 21 via the base end pipe portion 29a at a position further lower than the minimum level Hmin of the stored water in the water storage tank 21.
[0075]
This is because the water stored in the water storage tank 21 can be taken into the water supply channel 29 without being left.
[0076]
In the case of the present embodiment, the water supply tray (evaporator) 25 and the heating means 27 are respectively provided on the left and right of the rear part of the bottom plate 4 of the heating chamber 3. Therefore, as shown in FIG. 4, for example, the two water supply passages 29 are respectively branched to two horizontal piping portions 29b downstream of the base piping portion 29a via check valves 47, respectively, and each heating means 27, a contact portion 30 that contacts the horizontal piping portion 29b, the vertical piping portion 29c, the upper piping portion 29d, and the heater in contact with the assembly block 27a to supply the water in the piping with heat is laid. The distance between the contact portion 30 and the water outlet 29e at the tip of the pipe is set to be equal to each other between the water supply passages 29 provided in the water supply tray (evaporation unit) 25.
[0077]
In the high-frequency heating device 100 with the steam generating function described above, the water supply path 29 is routed so as to pass through a heating area of the heating means 27, and heat generated in the water supply path 29 by heat generated by the heating means 27. A pump function is obtained by expansion, and a dedicated pump means for supplying the water in the water storage tank 21 to the water supply tray (evaporator) 25 is not required.
[0078]
Therefore, simplification and downsizing of the configuration of the steam supply mechanism 7 can be realized by omitting the dedicated pump means.
[0079]
In addition, since water is supplied to the water supply tray (evaporator) 25 by the heat generated by the heating means 27, the control of the steam supply amount can be realized only by controlling the heat generation operation of the heating means 27. Compared with the conventional pump in which the dedicated pump means had to be controlled, the control processing required for controlling the supply amount of steam can be simplified.
[0080]
Further, since the water supplied to the water supply tray (evaporation unit) 25 is in a state of being heated by the heat generated by the heating means 27, the time required from the supply to the water supply tray (evaporation unit) 25 to the generation of steam. , And rapid steam heating becomes possible.
[0081]
Further, in the above configuration, when the remaining amount of the water storage tank 21 becomes 0 (zero) and the amount of remaining water on the water supply tray (evaporation unit) 25 decreases, the amount of heat consumed for water evaporation decreases. 27 and the temperature of the water supply tray (evaporator) 25 itself increase.
[0082]
However, since the steam supply mechanism 7 of the present embodiment includes the thermistor 41 for detecting the temperature of the heating means 27, monitoring the detection signal of the thermistor 41 allows the water storage tank 21 to be relatively easily operated. It is possible to detect the remaining amount 0, and it is possible to prevent occurrence of inconvenience such as emptying.
[0083]
Furthermore, various kinds of control such as stopping the operation of the heating means 27 or issuing an alarm for water supply can be performed by using the detection signal of the thermistor, for example, when the remaining amount of the water storage tank 21 is detected to be zero. The handleability of the heating device 100 can be improved.
[0084]
In the present embodiment, the thermistor 41 is brought into direct contact with the heating means 27, but may be equipped so as to come into contact with the water supply tray (evaporator) 25.
[0085]
In order to prevent the occurrence of heating unevenness due to the heating steam in the heating chamber of the high-frequency heating device with a steam generation function, the steam generation unit including the water supply tray (evaporation unit) 25 and the heating unit 27 is provided inside the heating chamber 3. It is desirable that the supply of the heating steam in the heating chamber 3 be equalized by dispersing equipment at a plurality of locations. However, if the steam generating units are distributed and installed at a plurality of locations, a device for uniformly supplying water to the water receiving trays (evaporating units) 25 at the plurality of locations is required.
[0086]
However, as described above, when a plurality of sets of the water supply tray (evaporator) 25 and the heating means 27 are provided, the respective water supply passages 29 provided in the respective water receivers (evaporator) 25 are connected to each other by the contact portion of the heater. And the distance from the pipe to the water outlet at the tip of the pipe is set to be equidistant, the supply amount in each water supply passage 29 can be made uniform without controlling the water supply flow rate. Can be realized at a low cost. FIG. 11 is an exploded perspective view of the steam supply mechanism according to the first embodiment of the present invention, and FIG. 12 is a sectional view taken along the line AA ′ of FIG.
[0087]
11 and 12, reference numeral 27 denotes a U-shaped sheathed heater as a heating means, 111 denotes a heating means main body made of an aluminum die-cast molding process in which the heating means 27 is embedded, and 112 denotes a high heat conductivity of aluminum or copper. A transfer pipe 113 that forms a heat transfer section made of a material is a transfer pipe heating section that forms a heat transfer section for boiling the liquid in the transfer pipe 112. A heat transfer control unit 114 is disposed between the heating unit main body 111 and the transport tube heating unit 113.
[0088]
The transport tube heating unit 113 is composed of two members 115 and 116, and the transport tube 112 is sandwiched by these two members. The member 115 is provided with a notch 115a centered on the center of the transport tube 112 in the transport direction, and the contact with the transport tube 112 is at the lower half and both ends of the transport tube 112.
[0089]
The heat transfer control unit 114 uses a material having a thermal conductivity that is at least one order of magnitude lower than that of the molding material of the heating unit main body 111 or the material of the transfer pipe 112. Iron and stainless steel can be selected, but stainless steel is selected and used in consideration of corrosion resistance. Further, in assembling the heat transfer control unit 114, the heat transfer control unit 114 is disposed between the heating unit main body 111 side and the transfer tube heating unit 113 in the thickness direction (heat conductivity: 5 to 7 W / mK) rather than in the surface direction (heat conductivity). Conductivity: 100 to 200 W / mK) and unnecessary heat transfer suppression in portions other than the heat transfer control unit 114 is eliminated by interposing carbon sheets 114 a and 114 b having high thermal conductivity characteristics.
[0090]
On the other hand, the member 116 has a configuration in which all regions in the transport direction abut on the transport tube 112. These two members 115 and 116 and the transport pipe 112 are primarily assembled by screws 117, 118, 119 and 120.
[0091]
The primary assembly of the transport pipe 112 and the transport pipe heating unit 113 is assembled to the heating unit main body 111 via the heat transfer control unit 114 by using screws 121 and 122.
[0092]
123 is a check valve which is a component forming a heat transfer section provided on the upstream side of the transfer pipe heating section 113 in the liquid transfer direction, 124 and 125 are connection sections for connecting power supply lead wires of the sheathed heater 27, 126 Reference numerals 129 to 129 denote mounting holes of the heating means main body 111, and 130 denotes a heat energy transfer portion for evaporating the conveyed liquid. Reference numeral 25 denotes an evaporating section formed by forming a material having a smaller thermal conductivity than the heat transfer control section 114, particularly a material obtained by subjecting a steel sheet or the like whose main component is iron to a surface treatment such as fluorine to have a concave shape on the upper side.
[0093]
The heating means main body 111 is used on the opposite side to the direction in which the transfer pipe 112 is provided, as a portion for transferring heat energy for evaporating the transferred liquid.
[0094]
The operation and operation of the steam supply mechanism configured as described above will be described below.
[0095]
The liquid to be conveyed will be described as water. First, a tank (not shown) for storing this water is installed on the check valve 123 side. Thereby, water is injected into the transport pipe 112. Thereafter, the sheath heater 27 is operated. With the start of the operation of the sheath heater 27, the heating means main body 111 is heated and the temperature rises. The heat of the heating means main body 111 is transferred to the main member 116 via the heat transfer control section 114 and the member 115 of the transport pipe heating section 113 while maintaining uniform temperature distribution characteristics through the carbon sheets 114a and 114b. Then, the transfer tube 112 is heated. At a portion where the tube wall temperature of the transfer tube 112 exceeds 100 ° C., local boiling of water occurs at the tube wall portion. Bubbles generated by the boiling expand the gas and push water in the transport pipe 112 to both sides in the transport direction. A check valve 123 is arranged on the upstream side in the transfer direction, and the check valve 123 is closed by pressing water in the transfer pipe 112. In response to this, bubbles generated by boiling have no escape place only on the downstream side in the transport direction. The check valve 123 is opened in conjunction with the movement of the bubble to the downstream side in the transport direction, and water is injected into the transport pipe 112 from the water storage tank. Water is transported by repeating this phenomenon. The transported water is guided to the evaporator 25 via a transport pipe (not shown). Since heat energy is transmitted from the heating means main body 111 to the evaporator, the water conveyed to the evaporator is further heated and evaporated.
[0096]
In the operation as described above, water is caused to boil in the region of the transfer tube 112 that abuts on the transfer tube heating section 113 and in the evaporating section, so that residues including calcium and magnesium contained in water adhere to the wall surface. It accumulates. This adhesion residue is called a scale. As the scale adhesion is continued, the inner cross section of the transfer pipe 112 gradually narrows, and in the worst case, the transfer function does not work. Further, the amount of heat transfer to the evaporating section and the transfer pipe decreases.
[0097]
The distribution of the heat energy supplied by the heating means main body 111 between the transfer pipe side and the evaporator section side is about 10 times the evaporator section side with respect to the transfer pipe side, so that the conveyed water can be immediately evaporated. . In this case, when the amount of heat transfer to water due to the scale adhesion on the evaporating section side decreases, the temperature of the heating means main body 111 increases. The heat transfer control unit 114 suppresses the amount of heat transfer to the transport tube heating unit 113 side in response to the temperature rise of the heating unit main body 111, and reduces the wall surface temperature of the transport tube 112 to a substantially constant desired temperature (specifically, (About 105 to 120 ° C.) and the heat energy of the local boiling in the transfer pipe 112 is kept low, whereby the scale adhesion in the transfer pipe 12 can be suppressed.
[0098]
As a specific temperature example, when the sheathed heater power is 600 W, the heat transfer control unit 114 is configured so that the temperature of the main member 116 is 105 to 110 ° C. when the temperature of the heating unit main body 111 is 160 ° C. The heat transfer control section 114 is made of stainless steel and has a thickness of 3 mm and a cross-sectional area of 300 mm. ² It is. When the scale accumulates on the evaporating section side under this condition, the heating means main body 111 exhibits a temperature rise of 20 to 30 ° C., but the temperature of the main member 116 is lower than 5 ° C. by the heat transfer control section 114. Was raised.
[0099]
Further, as shown in the configuration drawing of the present embodiment, as the configuration of the transport tube heating unit 113, by arranging the main member 116 on the lower side in the direction of gravity, bubbles generated by the boiling phenomenon in the transport tube 112 are reduced. Move upward in the direction of gravity. When air bubbles are generated by boiling, the temperature of the inner wall surface, which is not exposed to water, tends to immediately become high.However, water can immediately flow into this boiling point to suppress the rise in the temperature of the transport pipe wall surface, thereby further suppressing scale adhesion. it can.
[0100]
Furthermore, the main member 116 is configured to thermally diffuse in the water transport direction of the transport pipe 112, and the transport pipe is made of a material having a high thermal conductivity such as copper or aluminum, so that it can be used in a region where boiling occurs. By preheating the water to be conveyed, local boiling can be generated with a small amount of heat energy, so that scale adhesion can be further suppressed.
[0101]
Further, since the surface of the evaporating section 25 is subjected to a water-repellent treatment such as fluorine, the adhesion of the scale to the evaporating section 25 is reduced, and the scale can be removed and cleaned by wiping with a wet cloth. .
[0102]
(Example 2)
FIG. 13 is an exploded perspective view of a liquid evaporator according to a second embodiment of the present invention, and FIG. 14 is a sectional view taken along line BB ′ of FIG. The second embodiment differs from the first embodiment in that a concave portion is provided on the upper surface of an aluminum die-cast in which a sheathed heater is embedded and an evaporation portion is provided, and a water-repellent treatment such as fluorine is performed on the evaporation portion.
[0103]
13 and 14, 132 is a U-shaped sheathed heater as a heating means, 133 is a heating means main body made of an aluminum die-cast molding process in which the heating means 132 is embedded, and 134 has a high thermal conductivity of aluminum or copper. A transport pipe 135 made of a material is a transport pipe heating unit for boiling the liquid in the transport pipe 134. A heat transfer control unit 136 is disposed between the heating unit main body 133 and the transport tube heating unit 135.
[0104]
The transport tube heating unit 135 is composed of two members 137 and 138, and the transport tube 134 is sandwiched by these two members. The member 137 is provided with a notch 137a centered on the center of the transport pipe 134 in the transport direction, and the contact with the transport pipe 134 is at the lower half and both ends of the transport pipe 134.
[0105]
The heat transfer controller 136 uses a material having a heat conductivity that is at least one order of magnitude lower than that of the molding material of the heating means main body 133 or the material of the transfer pipe 134. Iron and stainless steel can be selected, but stainless steel is selected and used in consideration of corrosion resistance. Further, in assembling the heat transfer control unit 136, the heat transfer control unit 136 and the transfer pipe heating unit 135 are located between the thickness direction (heat conductivity: 5 to 7 W / mK) and the surface direction (heat conductivity). (Conductivity: 100 to 200 W / mK) The carbon sheets 136 a and 136 b having high thermal conductivity are interposed in the heat transfer control unit 136 to eliminate unnecessary heat transfer suppression.
[0106]
On the other hand, the member 138 has a configuration in which all regions in the transport direction abut on the transport pipe 134. The two members 137 and 138 and the transport pipe 133 are assembled by screws 139, 140, 141 and 142.
[0107]
Further, the primary assembly of the transport pipe 134 and the transport pipe heating unit 135 is assembled to the heating means main body 133 via the heat transfer control unit 136 using the screws 143 and 144.
[0108]
145 is a check valve provided on the upstream side of the transport tube heating section 135 in the liquid transport direction, 146 and 147 are connection sections for connecting the power supply lead wires of the sheathed heater 132, and 148 is an aluminum die as the heating means main body 133. An evaporator provided in a concave shape on the upper surface of the cast, the surface of which is subjected to a water-repellent treatment such as fluorine.
[0109]
The operation and operation of the steam supply mechanism configured as described above will be described below.
[0110]
In the second embodiment, since the evaporator 148 is formed integrally with the heating means main body 133, the temperature of the heating means main body 133 and the temperature of the evaporator 148 are the same until water is conveyed to the evaporator 148. Become. When the water is conveyed to the evaporating section 148 and the heat storage energy of the heating means main body 132 is consumed, the amount of heat transfer to the conveying pipe 134 is temporarily reduced. And the amount of heat transfer to the transfer pipe 134 is balanced. Thereby, steam is generated stably. Further, since the heat transfer efficiency from the evaporator 148 to the transport water is high, the water sent to the evaporator 148 can be vaporized in a very short time.
[0111]
Further, since the surface of the evaporating section 148 is subjected to a water-repellent treatment such as fluorine, the adhesive force of the scale is reduced, and the scale can be removed and cleaned by wiping with a wet cloth.
[0112]
The contents other than the shape of the heating means main body 133 and the material of the evaporating section 148 are the same as those of the first or second embodiment, and the description is omitted.
[0113]
(Example 3)
FIG. 15 is a sectional view of a transfer pipe including a transfer pipe heating unit and the like in the third embodiment of the present invention. The third embodiment differs from the first and second embodiments in that the inner surface area of the piping is larger than the outer surface area of the piping and that the inner surface of the piping is subjected to a water-repellent treatment.
[0114]
In FIG. 15, reference numeral 149 denotes a U-shaped sheathed heater serving as a heating means, 150 denotes a heating means main body made of an aluminum die-cast molding process in which the heating means 149 is embedded, and 151 denotes a material having a high thermal conductivity of aluminum or copper. A transport tube 152 having a concave-convex cross-sectional area and having its surface subjected to a water-repellent treatment, and a transport tube heating unit 152 for boiling the liquid in the transport tube 151. A heat transfer control unit 153 is disposed between the heating unit main body 147 and the transport tube heating unit 152.
[0115]
In the third embodiment, since the surface of the transfer tube 151 is subjected to a water-repellent treatment such as fluorine, the contact angle of water or the like is reduced, and the heat conductivity is slightly reduced, but the adhesion of scale or the like is also suppressed. You. Thereby, the blockage of the transport pipe 151 due to the scale adhesion can be delayed. Further, when removing the scale in the transport pipe 151 with citric acid or the like, the cleaning performance of the scale is improved, and the cleaning can be performed in a short time. In addition, since the contact area of the transfer pipe 151 per unit water in the pipe is increased, the local boiling can be generated with a small amount of heat energy by gradually heating the water. Sound generation can be further suppressed.
[0116]
The contents other than those related to the transfer pipe 151 are the same as those of the first embodiment, and the description is omitted.
[0117]
【The invention's effect】
The high-frequency heating device with a steam generating function of the present invention obtains a pump function by thermal expansion of water in the water supply passage due to heat generated by the heating unit, and eliminates the need for a dedicated pump unit. Simplification and downsizing can be realized.
[0118]
Further, since the control of the supply amount of steam can be achieved only by controlling the heat generation operation of the heating means, the control process can be simplified.
[0119]
In addition, when the steam generating section constituted by the water supply tray and the heating means is separately installed at a plurality of locations in the heating chamber, the uniform supply of the heating steam in the heating chamber can be realized at low cost.
[0120]
In addition, it is possible to suppress the amount of heat transfer to the heat transfer section while securing the heat energy to the evaporating section, and to suppress scale adhesion due to local boiling in the heat transfer section piping. In addition, it is possible to provide a steam supply mechanism that keeps good thermal energy supply balance between the heat transfer section side and the evaporation section side and continuously generates high-temperature steam close to 100 ° C.
[Brief description of the drawings]
FIG. 1 is an external perspective view of an embodiment of a high-frequency heating device with a steam generating function according to the present invention.
FIG. 2 is a schematic configuration diagram of the high-frequency heating apparatus with a steam generating function shown in FIG. 1 when the opening and closing door of the heating chamber is opened and the heating chamber is viewed from the front.
FIG. 3 is a schematic configuration diagram of a steam supply mechanism in the high-frequency heating device with a steam generation function shown in FIG. 1;
FIG. 4 is a schematic configuration diagram of a steam supply mechanism when there is one water supply tray;
FIG. 5 is an explanatory diagram of an attaching / detaching operation of a water storage tank in the high-frequency heating device with a steam generating function shown in FIG. 1;
(A) Explanatory drawing of the installed state of the water storage tank
(B) Explanatory drawing of the state where the tank insertion opening was exposed
(C) Explanatory drawing of the state of extracting the water storage tank
6 is an enlarged perspective view of a water storage tank used in the steam supply mechanism shown in FIG.
FIG. 7 is an explanatory view of a mounting structure on a side surface of the device of the steam supply mechanism shown in FIG. 4;
FIG. 8 is an explanatory view of a backflow prevention structure at a connecting portion between the water storage tank and the base end of the water supply channel shown in FIG. 6;
(A) A view showing a state in which the connection port of the container body is not fitted to the base circular pipe portion.
(B) A view showing a state in which the connection port of the container main body is properly fitted to the base circular pipe portion.
FIG. 9 is a view taken in the direction of arrow A in FIG. 6, and is an explanatory view of a configuration in which a water supply channel is heated by a heating means disposed at a bottom of the apparatus.
FIG. 10 is a diagram for explaining evaporation amount control and abnormality detection by a thermistor;
FIG. 11 is an exploded perspective view of a steam supply mechanism according to the first embodiment of the present invention.
FIG. 12 is a sectional view taken along the line AA ′ of FIG. 11;
FIG. 13 is an exploded perspective view of a steam supply mechanism according to a second embodiment of the present invention.
FIG. 14 is a sectional view taken along line BB ′ of FIG. 13;
FIG. 15 is a cross-sectional view of a transfer pipe including a transfer pipe heating unit and the like according to a third embodiment of the present invention.
[Explanation of symbols]
3 heating room
4 Bottom plate
5 High frequency generation means
7 Steam supply mechanism
13 Door
15 Partition wall
17 Stirrer blade
21 Water storage tank
22 Container body
22b Connection port
23 Opening / closing lid
25 Water supply tray (evaporator)
27 heating means
27a Assembly block
29 Water supply channel
29a Base end piping
29b Horizontal piping
29c Vertical piping section
29d Upper piping section
33 Water stop valve on the tank side
35 Tank storage section
36 Tank insertion port
41 Thermistor (Temperature detection sensor)
45 Water stop valve on pipe side
47 Check valve
132, 149 Seeds heater (heating means)
111, 133, 150 heating means main body
112, 134, 151 Transfer tube
113, 135, 152 Transport tube heating unit
114, 136, 153 Heat transfer control unit
114a, 114b, 136a, 136b carbon sheet
122, 143 Check valve
148 Evaporator (water supply tray)

Claims (10)

A high-frequency generating unit that outputs high-frequency waves to a heating chamber that accommodates the object to be heated; and a steam supply mechanism that supplies heating steam to the heating chamber. A high-frequency heating device with a steam generating function of heating the object to be heated, wherein the steam supply mechanism is provided with a water storage tank detachably mounted on a device main body, an evaporator provided in the heating chamber, Heating means for heating the evaporating section to evaporate water, heat transporting section for generating water in the water storage tank, causing local boiling by the energy generated by the heating means, and transporting the water to the evaporating section; A water supply passage leading to the evaporating unit via a heat transfer control unit made of a material having a smaller thermal conductivity than a material forming the evaporating unit, between the heat transfer unit and the heating unit. In front High frequency heating apparatus with steam generation function, characterized by controlling the amount of heat energy transferring heat to the heat transport unit from the heating means. The high-frequency heating apparatus with a steam generating function according to claim 1, wherein the heat transfer suppressing section makes the amount of heat energy supplied from the heating means to the heat transfer section equal to or less than 1/8 of the amount of heat energy supplied to the evaporating section. The high-frequency heating device with a steam generating function according to claim 1 or 2, wherein the heat energy of the heating means is transferred to the heat transfer suppressing portion via a material having a larger heat conduction characteristic in a surface direction than in a thickness direction. A sheath heater as a heating means is embedded in an aluminum die cast, and an evaporating section formed by forming a steel sheet subjected to a water repellent treatment such as fluorine into a concave shape on the upper surface thereof is joined, and a heat transfer section is provided on a side surface or a bottom surface of the aluminum die cast. The high-frequency heating device with a steam generating function according to any one of claims 1 to 3, wherein the high-frequency heating device is joined through a heat transfer control unit formed of stainless steel. The high-frequency heating device with a steam generating function according to claim 4, wherein the evaporating section is made detachable from the aluminum die-cast. A sheath heater as a heating means was embedded in an aluminum die cast, a concave portion was provided on the upper surface thereof to serve as an evaporator, and a heat transfer portion was joined to a side or bottom surface of the aluminum die cast via a heat transfer controller formed of stainless steel. The high-frequency heating device with a steam generating function according to claim 1. 7. The high-frequency heating apparatus with a steam generating function according to claim 6, wherein a water-repellent treatment such as fluorine is applied to a surface of the evaporating section. The high-frequency heating device with a steam generating function according to any one of claims 4 to 7, wherein the pipe of the heat transfer section is formed of aluminum or copper having a high thermal conductivity. The high-frequency heating device with a steam generating function according to any one of claims 4 to 8, wherein an inner surface area is larger than an outer surface area of the pipe of the heat transfer unit. The high-frequency heating device with a steam generating function according to claim 9, wherein a water-repellent treatment such as fluorine is applied to an inner surface of the pipe of the heat transfer unit.

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