WO2004104481A1 - 蒸気発生機能付高周波加熱装置 - Google Patents
蒸気発生機能付高周波加熱装置 Download PDFInfo
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- WO2004104481A1 WO2004104481A1 PCT/JP2004/007111 JP2004007111W WO2004104481A1 WO 2004104481 A1 WO2004104481 A1 WO 2004104481A1 JP 2004007111 W JP2004007111 W JP 2004007111W WO 2004104481 A1 WO2004104481 A1 WO 2004104481A1
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- Prior art keywords
- water
- heating
- pipe
- transfer
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/647—Aspects related to microwave heating combined with other heating techniques
- H05B6/6473—Aspects related to microwave heating combined with other heating techniques combined with convection heating
- H05B6/6479—Aspects related to microwave heating combined with other heating techniques combined with convection heating using steam
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- A—HUMAN NECESSITIES
- A21—BAKING; EDIBLE DOUGHS
- A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
- A21B3/00—Parts or accessories of ovens
- A21B3/04—Air-treatment devices for ovens, e.g. regulating humidity
Definitions
- the present invention includes a high-frequency generating 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 steam into the heating chamber, wherein at least one of the high-frequency wave and the steam is supplied to the heating chamber.
- the present invention relates to a high-frequency heating device with a steam generating function for supplying and heating a heated object.
- a high-frequency heating device equipped with a high-frequency generator that outputs high-frequency waves into a heating chamber that accommodates an object to be heated can heat the object to be heated in the heating chamber in a short period of time and efficiently. It has rapidly spread as a microwave oven as a cooking appliance.
- a high-frequency heating device that enables oven heating by adding an electric heater that generates heat in the heating chamber.
- a high-temperature steam has been added by adding a steam supply mechanism that supplies heating steam into the heating chamber.
- a high-frequency heating device with a steam generating function that also enables heating cooking by using a heating method (for example, Japanese Patent Application Laid-Open No. 54-115448).
- the steam supply mechanism in the conventional high-frequency heating device heats a water storage tank detachably mounted on the device body, a water supply receiver 11 (evaporator) installed in the heating chamber, and a water supply tray (evaporator).
- the heating means for evaporating the water on the water supply tray (evaporator) and the exclusive pump means for supplying the water in the water storage tank to the water receiver (evaporator) are provided.
- the water stored in the water storage tank is supplied to the water supply tray (evaporator) by a dedicated pump.
- the water is supplied without receiving preheating etc. (to avoid pump failure due to hot water), so the water temperature supplied to the water supply tray (evaporator) is low.
- the heating means to heat the water supply tray (evaporator) and generate steam.
- the heating means that heats the evaporating section heats the transport pipe that supplies water from the water storage tank to the water supply tray (evaporating section), and also supplies water to the water receiving tray by boiling the water inside. It is possible. In this case, it is necessary to control the heating amount of the transfer pipe.
- the present invention has been made in view of the above-described problems, and has as its object to eliminate the need for a dedicated pump means for supplying water from a water storage tank to a water supply tray (evaporation unit), and to omit the pump means.
- the configuration and size of the steam supply mechanism can be simplified and downsized, the control processing required for controlling the steam supply amount can be simplified, and the time required until steam is generated can be shortened.
- the high-frequency heating device with a steam generating function of the present invention is: High-frequency generating means for outputting high-frequency waves into a heating chamber for accommodating an object to be heated; and a steam supply mechanism for supplying ripened steam into the heating chamber, wherein at least one of high-frequency waves and heated steam is supplied to the heating chamber.
- a heating means for heating the evaporator to evaporate water a transport pipe for causing water in the water storage tank to generate local boiling water by energy generated by the heating means and transporting the water to the evaporator; It is made of a material having a lower thermal conductivity than the material forming the evaporating section, and comprises a heat transfer control section interposed between the transfer pipe and the heating section, wherein heat transferred from the heating section to the heat transfer section is provided.
- a steam generating function equipped high-frequency heating apparatus designed to control the energy quantity.
- a check valve upstream of the heating unit in the liquid transport direction is desirable to provide a check valve upstream of the heating unit in the liquid transport direction. Further, it is configured such that bubbles generated by boiling water in the transfer pipe by using thermal energy of the heating means are not moved to the check valve side.
- the water supply passage (conveying pipe) is routed so as to pass through a heating area by the heating means, and the water in the water supply passage due to the heat generated by the heating means is provided.
- the pump function is obtained by local boiling, and no dedicated pump means is required to supply the water in the water storage tank to the evaporator.
- simplification and downsizing of the configuration of the steam supply mechanism can be realized by omitting the dedicated pump means.
- the amount of steam supply can be controlled only by controlling the heating operation of the heating means, and a dedicated pump means is controlled.
- the control process required for controlling the steam supply rate can be simplified as compared with the conventional one that had to be performed.
- the water supplied to the evaporator is 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 Heating Will be possible.
- the evaporator is set to a high temperature, and the temperature of the heat transfer unit can be set to a temperature range of 100 to 120 ° C, which enables boiling, so that the liquid is transferred while maintaining the liquid transfer function.
- the ice can be evaporated quickly and reliably, the scale can be prevented from adhering in the transfer pipe, which is the heat transfer section, and high-temperature steam can be continuously generated.
- FIG. 1 is an external perspective view of one embodiment of a high-frequency heating device with a steam generating function according to the present invention.
- Fig. 2 is a schematic diagram of the high-frequency heating device with steam generating function shown in Fig. 1 when the heating chamber is viewed from the front with the door of the heating chamber open.
- Fig. 3 is a schematic diagram of the steam supply mechanism in the high-frequency heating device with steam generation function shown in Fig. 1.
- Figure 4 shows the schematic configuration of the steam supply mechanism when there is only one water supply tray.
- Fig. 5 is an explanatory view of the installation / removal operation of the water storage tank in the high-frequency heating device with a steam generating function shown in Fig. 1, (a) an explanatory view of the installed state of the water storage tank, and (b) a state where the tank insertion port is exposed. (C) Explanatory drawing of the drained state of the water storage tank
- Fig. 6 is an enlarged perspective view of the water storage tank used in the steam supply mechanism shown in Fig. 4.
- Fig. 7 is an explanatory view of the mounting structure on the side of the device of the steam supply mechanism shown in Fig. 4.
- Fig. 8 is an explanation of the backflow prevention structure at the connection between the water storage tank and the base end of the water supply channel shown in Fig. 6.
- FIG. 9 is a view taken in the direction of the arrow A in FIG.
- FIG. 10 is a diagram for explaining evaporation amount control and abnormality detection by a thermistor.
- W 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 cross-sectional view taken along the line A-A 'in Fig. 11.
- FIG. 13 is an exploded perspective view of a steam supply mechanism according to the second embodiment of the present invention.
- Fig. 14 is a sectional view taken along the line BB 'in Fig. 13.
- FIG. 15 is a cross-sectional view of a transport pipe including a transport pipe heating unit and the like in Embodiment 3 of the present invention.
- FIG. 16 is an exploded perspective view of a steam supply mechanism in Embodiment 4 of the present invention.
- Fig. 17 is a sectional view taken along the line A-A 'in Fig. 16.
- FIG. 18 is a sequence diagram showing the thermistor detection level and the operation state of the heat source (heating means) in Embodiment 4 of the present invention.
- FIG. 19 is an exploded perspective view of a steam supply mechanism according to Embodiment 5 of the present invention.
- FIG. 20 is a sequence diagram showing the thermistor detection level and the operation state of the heat source (heating means) in Embodiment 5 of the present invention.
- FIG. 21 is a configuration diagram of a steam supply mechanism in Embodiment 6 of the present invention.
- Fig. 22 is a sectional view taken along the line A-A 'in Fig. 21.
- FIG. 23 is an external view of a steam supply mechanism according to the seventh embodiment of the present invention.
- Fig. 24 is a sectional view taken along the line BB 'in Fig. 23.
- FIG. 25 is a configuration diagram of a steam supply mechanism in Embodiment 8 of the present invention.
- FIG. 26 is a configuration diagram of a steam supply mechanism in Embodiment 9 of the present invention.
- FIG. 27 is an exploded perspective view of a steam supply mechanism according to Embodiment 10 of the present invention.
- Fig. 28 is a sectional view taken along the line A-A 'in Fig. 27.
- Fig. 29 is a cross-sectional view showing a state in which the transport tube is sandwiched between the two members of the transport tube heating section shown in Fig. 27.
- the width dimension A of the semicircular groove portion is the external dimension of the transport tube
- a diagram showing a state smaller than X
- (c) a width dimension A of the semicircular groove A diagram showing a state where the outer dimension X of the transfer pipe 1 1 2 is larger than the outer dimension X of the transfer pipe and the depth dimension B of the semicircular groove is larger than the outer diameter dimension X 2 of the transfer pipe.
- FIG. 30 is an external view showing a configuration of a transport pipe 1 12 in the embodiment 10 of the present invention.
- FIG. 31 is an external view showing a configuration of a transport pipe 144 in the embodiment 11 of the present invention.
- FIG. 32 is an exploded perspective view of a steam supply mechanism according to Embodiment 12 of the present invention.
- FIG. 33 is a cross-sectional view taken along line AA ′ of FIG.
- FIG. 34 is an explanatory view of a mounting structure on a side surface of a device of a steam supply mechanism.
- FIG. 1 and 2 are external views of a high-frequency heating device with a steam generating function according to the present invention.
- This high-frequency heating device 100 with a steam generating function is used as a microwave oven capable of high-frequency heating and heating with heated steam for heating and cooking food, and is provided in a heating chamber 3 for accommodating an object to be heated such as food.
- the object to be heated in the heating chamber 3 is heated.
- the heating chamber 3 is formed inside a box-shaped main body case 10 with an open front.
- an opening / closing door 13 with a light-transmitting window 13 a that opens and closes an outlet of an object to be heated of the heating chamber 3 is provided.
- the lower end of the door 13 is hinged to the lower edge of the body case 10 so that it can be opened and closed in the vertical direction.
- the handle 13 b mounted on the upper part can be grasped and pulled forward.
- the open state shown in FIG. 2 can be obtained.
- 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 necessary.
- the space behind the heating chamber 3 is a circulation fan chamber containing a circulation fan for stirring the atmosphere in the heating chamber 3 and a drive motor (not shown), and the rear wall of the heating chamber 3 is heated. It is a partition that defines room 3 and the circulation fan room.
- a partition wall 15 which is a rear wall of the heating chamber 3 has an intake ventilation hole for taking in air from the heating chamber 3 side to the circulation fan chamber side, and a heating chamber from the circulation fan chamber side.
- a ventilation opening for blowing air to the three sides is provided to distinguish the formation area.
- Each ventilation hole is formed as a number of punch holes.
- the high-frequency generating means (magnetron) 5 is arranged in the space below the heating chamber 3 and receives the low frequency generated from the high-frequency heating device 5.
- a stirrer blade 17 is provided at the position.
- the high frequency is supplied into the heating chamber 3 while being stirred by the stirrer blade 17.
- the high frequency generating means 5 ⁇ stirrer blade 17 can be provided not only at the bottom of the heating chamber 3 but also at the top or side of the heating chamber 3.
- the steam supply mechanism 7 has one water storage tank 21 detachably mounted on the main unit and two water supply trays (evaporation section) 2 5 installed in the heating chamber 3.
- Water supply tray (evaporator) 25 through the area Two water supply channels 29, and a connection between the water storage tank 21 and each water supply channel 29 Store water when the water storage tank 21 is removed Water stop valve 33 on the tank side and water stop valve 45 on the water supply side to prevent leakage of water in the tank and water supply path, and water supply path located downstream from the water stop valve 45 on the water supply side
- a check valve 47 for preventing backflow of water from the water tank 29 to the water storage tank 21.
- 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 29 e at the end of the water supply channel is set to be equal. .
- the steam supply mechanism 7 may be configured to supply water from one system water supply channel 29 to one water supply tray (evaporator) 25 to generate steam.
- 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, it is inserted into a tank storage section 35 attached to the side of the main body case 10 so as to be less likely to be thermally damaged by the heating.
- the tank storage section 35 has a rear end hinged to the main body case 10 and when the front end shown by an arrow (a) in FIG. 5 (a) is disengaged, As shown by the arrow (mouth) in Fig. 5 (b), the front end pivots outward, exposing the tank inlet 36 at the front end.
- the water storage tank 21 With the tank inlet 36 exposed, the water storage tank 21 can be withdrawn in the direction indicated by the arrow (c) in FIG. 5 (c). Installation of the water storage tank 21 is completed by inserting the water storage tank 21 into the tank insertion port 36 in the direction opposite to the extraction direction.
- the water storage tank 21 is composed of a flat rectangular parallelepiped container body 22 having an open upper part, and an opening / closing lid 23 covering the upper opening of the container body 22.
- the container body 22 and the opening / closing part 23 are made of resin.
- the container body 22 is made of a transparent resin so that the remaining amount of water in the container body can be visually recognized.
- Scales 2 2 a indicating the remaining water level are provided on both sides of the container body 22. ing. As shown in FIGS. 5 and 7, the portion equipped with the scale 22 a is exposed to the outside through the cutout window 37 formed at the front edge of the tank storage portion 35, and The remaining amount of water in the water storage tank 21 is made visible.
- a cylindrical connection port 22 b that fits and connects to the water supply channel 29 is protrudingly provided at a position near the lower rear of the container main body 22.
- the connection port 22b is closed to close the connection port 22b to prevent the stored water from flowing out.
- the water stop valve 3 is equipped.
- 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.
- the water supply tray (evaporator) 25 is provided on the left and right sides of the rear portion of the bottom plate 4 in the present embodiment.
- the heating means 27 is a series heater arranged in contact with the lower surface of each water supply tray (evaporator) 25, and is attached to the back of the water supply tray (evaporator) 25 as shown in FIG.
- the heater body is assembled to an aluminum die-casting assembly block 27a.
- a thermistor as a temperature detection sensor for detecting the temperature of the heating means 27 is provided between the pair of electrodes 27 b and 27 c at both ends of the heater extending from the assembly block 27 a. Data 41 is connected.
- the thermistor 41 is buried in the mounting 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).
- a control circuit not shown
- the temperature of the heating means 27 rises as the temperature rises.
- the detected temperature level rises.
- the water supply pan (evaporator) 25 indicated by the symbol a in the figure runs out of water, the detected temperature level rises rapidly because the heating means 27 is energized, and is indicated by the b. Exceeds the upper reference value.
- a 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.
- control circuit determines that there is no water in the water supply tray (evaporator) 25 and the heating means 27 is in the state of baking, and energizes the heating means 27 as shown by e. At the same time, control is performed to stop the steam heating process by issuing an alarm.
- a single thermistor can be used to control the generation of the amount of steam and to detect an abnormality when the water in the water supply tray (evaporator) is exhausted.
- control can prolong the life of the heater and enable use of the water supply tray (evaporator) within the heat-resistant temperature, thereby preventing deterioration of the fluororesin coating surface of the water supply tray (evaporator). .
- 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, if there is no water in the water supply tray (evaporating section).
- the determination is made, the determination is not limited to two times, and the determination may be made by detecting a plurality of times.
- 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.
- the water supply channel 29 has a base pipe section 29a that is branched and connected to the connection port 22b of the water storage tank 21 in two systems, and the base pipe section 29a.
- a horizontal piping section 29 b routed under the bottom plate 4 of the heating chamber 3 so as to pass from the section 29 a to the heating area by each heating means 27, and from the tip of the horizontal piping section 29 b
- It is composed of an upper piping section 29 d and a water outlet 29 e forming a tip of each upper piping section 29 d.
- the horizontal piping section 29b is piped so as to come into contact with the mounting block 27a of the heating means 27, and is in contact with the mounting block 27a shown in Fig. 9.
- 30 is a heating area by the heating means 27.
- each water supply channel 29 is set to a heating area by the heating means 27, and the heat conduction by the heat generated by each heating means 27 receives
- the water in the horizontal pipe section 29 b is boiled to supply water to the respective water supply receivers 11 (evaporation sections) 25.
- each horizontal piping part 29 b can apply the same amount of heat from the contact part 30 by applying the heating means 27 of the same specification, and this makes it possible to supply water evenly to each water supply tray (evaporation part) 25 .
- the temperatures of the water supply channels 29 and the contact portion 30 can be made the same, and the steam generation control can be made. Easier to remove. Since the water supplied to the water supply tray (evaporator) 25 has been heated by the heat generated by each heating means 27, it is necessary to supply water from the water receiver (evaporator) 25 to the steam generation. Time can be shortened, and rapid steam heating becomes possible.
- the water storage tank 22 is removed from the proximal pipe section 43, into which the connection port 22b of the container body 2.2 fits, as shown in Fig. 8 (a).
- a water stop valve 45 is provided on the pipe side, and the horizontal piping section 29b is connected to the horizontal piping section 29b.
- a check valve 47 is installed to prevent backflow (flow in the direction of arrow (2) in the figure) from the horizontal piping section 29b due to thermal expansion of water at 9b.
- the water stop valve 33 on the tank side and the water stop valve 45 on the pipe side have springs 3 3b and 45 b that urge the valve bodies 33a and 45a, respectively.
- the connection port 2 2b of 22 is properly fitted to the base circular tube section 43, as shown in Fig. 8 (b)
- the two valve bodies 33a and 45a have the same distal end. The technicians strike each other and displace the opponent against the biasing force of the springs 33b and 45b to open the flow path.
- connection port 22 b of the container main body 22 is provided with an O-ring 49 as a sheet material for closing a gap between the connection port 22 b and the base circular pipe section 43.
- the state shown in Fig. 8 (a) is a state in which the connection port 2 2b of the container body 22 is not fitted to the base circular pipe part 43, and the water stop valve 33 on the tank side and the pipe side are still in place. Both of the water stop valves 45 are closed.
- connection port 2 2 b of the container body 2 2 is separated from the base circular pipe section 4 3
- the water supply path 29 side is sealed with the water stop valve 45 on the pipe side, and the water supply path 2 Backflow of water in 9 is reliably prevented.
- water flows into the vertical piping section 29c of each water supply channel 29 to the same water level as the water storage tank 21. I do. Under such water pressure, even if the water storage tank 21 is extracted, the water can be prevented from flowing backward by the water stop valve 45 on the pipe side.
- a recess 51 is provided between the water stop valve 33 on the tank side and the water stop valve 45 on the pipe side to receive a small amount of remaining water.
- a water absorption sheet 53 that absorbs the dropped water.
- the water-absorbing sheet 53 for example, a nonwoven fabric having excellent water-absorbing properties is used.
- the upper end of the vertical pipe section 29c to which the upper pipe section 29d is connected is located at a position higher than the highest level Hmax of the stored water in the water storage tank 21. It is set. This is to prevent the water stored in the water storage tank 21 from being inadvertently and continuously flowing out to the upper piping part 29d by the communicating pipe.
- the water supply channel 29 is connected to the water storage tank 21 via the base end pipe part 29a at a position lower than the minimum level H min of the stored water in the water storage tank 21.
- the water supply tray (evaporator) 25 and the heating means 27 are provided on the left and right of the rear part of the bottom plate 4 of the heating chamber 3, respectively. Therefore, as shown in FIG. 4, for example, the two water supply channels 29 are connected to two horizontal piping sections 29 b downstream of the base pipe section 29 a via check valves 47 respectively. Branched into each heating means 27, horizontal pipe section 29b, vertical pipe section 29c, upper pipe section 29d, and contact with the assembly block 27a to heat the water in the pipe and heat the heater. A contact section 30 for supplying water is laid, but each water supply channel 29 provided in each water supply tray (evaporation section) 25 is connected to the water outlet 2 9 at the tip of the pipe from the contact section 30. The distance to e is set equal.
- the water supply channel 29 is routed so as to pass through a heating area by the heating means 27, and the water supply path 2 by the heat generated by the heating means 27 is provided.
- a pump function is obtained by the thermal expansion of the water in 9, and a dedicated pump means for supplying the water in the water storage tank 21 to the water supply tray (evaporator) 25 is unnecessary.
- simplification and downsizing of the configuration of the steam supply mechanism 7 can be realized by omitting the dedicated pump means.
- the steam supply amount can be controlled only by controlling the heating operation of the heating means 27.
- the control processing required for supply control can be simplified.
- the water supplied to the water supply tray (evaporator) 25 is heated by the heat generated by the heating means 27, the water is supplied to the water receiver (evaporator) 25 until the steam is generated.
- the time required for heating can be shortened, and rapid steam heating becomes possible.
- the steam supply mechanism 7 of the present embodiment includes the thermistor 41 for detecting the temperature of the heating means 27, it is relatively easy to monitor the detection signal of the thermistor 41. It is possible to detect the remaining amount 0 of the water storage tank 21 and prevent occurrence of inconvenience such as emptying.
- the detection signal of the thermistor it is possible to perform various kinds of control such as stopping the operation of the heating means 27 or issuing a warning for water supply when the remaining amount of the water storage tank 21 is detected, for example.
- various kinds of control such as stopping the operation of the heating means 27 or issuing a warning for water supply when the remaining amount of the water storage tank 21 is detected, for example.
- the handling of the high-frequency heating device 100 can be improved.
- the thermistor 41 is brought into direct contact with the heating means 27, but may be provided so as to come into contact with the water supply tray (evaporator) 25.
- the steam generating section constituted by the water supply tray (evaporating section) 25 and the heating means 27 is heated. It is desirable to equip the heating steam supply itself in the heating chamber 3 by dispersing equipment at a plurality of locations in the chamber 3. And then forces s, when dispersed equipped with steam generating portion in a plurality of locations, devised for performing equally water to the water receiving tray (evaporation section) 2 5 of the plurality locations is required.
- each water supply channel 29 provided in each water receiver (evaporator) 25 is If the distance from the heater contact area to the water outlet at the tip of the pipe is set to be equal, the water supply flow Even if the control of the temperature is not performed, the supply amounts in the respective water supply channels 29 can be made uniform, and the uniform supply of the heating steam in the heating chamber 3 can be realized at low cost.
- 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 line AA ′ of FIG.
- reference numeral 27 denotes a U-shaped sheathed heater serving 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
- 112 denotes aluminum.
- 113 is a transfer tube heating section for boiling the liquid in the transfer tube 112.
- Reference numeral 114 denotes a heat transfer control section, which is disposed between the heating means main body 111 and the transport pipe heating section 113.
- the transport pipe heating section 113 is composed of two members 115 and 116, and the transport pipe 112 is sandwiched by these two members.
- the member 1 15 has a notch 1 15 a centered on the center of the transfer tube 1 12 in the transfer direction, and the contact with the transfer tube 1 1 2 is in the lower half of the transfer tube 1 1 2 And both ends.
- the heat transfer control section 114 uses a material having a thermal conductivity that is at least one order of magnitude lower than the molding material of the heating means main body 111 and 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. Also, in assembling the heat transfer control section 114, between the heating means main body 111 side and the transfer pipe heating section 113, the thickness direction (thermal conductivity: STW / mK) In the plane direction (thermal conductivity: 100 to 200 W / m K), a carbon sheet having high thermal conductivity characteristics 1 1 4a, 1 1 4b is interposed and heat transfer control unit 1 Unnecessary heat transfer suppression in parts other than 14 is eliminated.
- the member 116 has a configuration in which all areas in the transport direction abut on the transport pipe 112. These two members 1 15, 1 16 and the conveying pipe 1 12 are primary assembled by screws 117, 118, 119, 120.
- the primary assembly of the transfer pipe 1 1 2 and the transfer pipe heating section 1 1 3 is assembled to the heating means 1 1 1 via the heat transfer control section 1 1 4 using screws 1 2 1 and 1 2 2. ing.
- 1 2 3 is a check valve which is a component forming a heat transfer section provided upstream of the transfer pipe heating section 1 13 in the liquid transfer direction, and 1 2 4 and 1 2 5 are power supply of the sheath heater 27.
- Connections for connecting lead wires, 1 26 to 1 29 are mounting holes for heating means main body 1 1 1, 1 30 is liquid transported It is a heat transfer part of heat energy for evaporating the body.
- Reference numeral 25 denotes an evaporating section formed with a concave shape on the upper side of a material having thermal conductivity characteristics smaller than that of the heat transfer control section 114, especially a material obtained by applying a surface treatment such as fluorine to a steel sheet mainly composed of iron. is there.
- 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.
- the operation and action of the steam supply mechanism configured as described above will be described below.
- the liquid to be conveyed is described as water.
- a tank (not shown) for storing this water is installed on the check valve 123 side.
- water is injected into the transfer pipe 112.
- the season heater 27 is operated.
- the heating means main body 1 1 1 1 is heated and the temperature rises.
- the heat of the heating means 1 1 1 1 is passed through the carbon sheets 1 1 4 a and 1 1 4 b, so that the heat transfer control section 1 1 4 and the transfer pipe heating section 1 1 1 maintain uniform temperature distribution characteristics.
- the heat is transferred to the main member 1 16 via the third member 1 15 and the transfer pipe 112 is heated.
- a check valve 123 is disposed 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 to the evaporator from the heating means main body 111, the water conveyed to the evaporator is further heated and evaporated.
- the distribution of the thermal energy supplied by the heating means body 111 to the transfer pipe side and the evaporator section side is made about 10 times the evaporator section side to the transfer pipe side, so that the conveyed water is immediately evaporated. be able to.
- the temperature of the heating means 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 rise in temperature of the heating means main body 111, and keeps the wall temperature of the transport tube 112 almost constant.
- the scale in the transport pipe 122 can be reduced. Adhesion can be suppressed.
- a desired temperature specifically, about 105 to 120 ° C
- the sheathed heater power is 600 W
- the temperature of the heating means main body 111 is 160 ° C
- the temperature of the main member 116 becomes 105 ° C
- the heat transfer control section 114 is configured as follows.
- the heat transfer control section 114 is made of stainless steel and has a thickness of 3 mm and a cross-sectional area of 30 O mm 2 .
- the heating means main body 1 11 exhibits a temperature rise of 230 ° C, but the heat transfer control section 1 14
- the temperature of 16 was less than 5 ° C.
- the main member 116 is disposed below the gravity direction, so that the Bubbles generated by the boiling phenomenon move upward in the direction of gravity.
- the temperature of the inner wall surface which is not exposed to water, tends to increase immediately.However, water is immediately flowed into the boiling point to suppress the rise in the temperature of the transport pipe wall, thereby further suppressing scale adhesion. it can.
- the main member 1 16 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.
- the adhesive force of the scale of the evaporator section 25 is reduced, and the scale is removed and cleaned by wiping with a wet cloth. Can be.
- FIG. 13 is an exploded perspective view of a liquid evaporator according to a second embodiment of the present invention.
- FIG. 13 is a sectional view taken along line BB ′ of FIG.
- Embodiment 2 is different from Embodiment 1 in that a concave portion is provided on the upper surface of an aluminum die-cast in which a sheet heater is embedded and an evaporation portion is provided, and a water-repellent treatment such as fluorine is performed on the evaporation portion. That's it.
- 13 2 is a U-shaped sheath heater serving as a heating means
- 13 3 is a heating means main body made of an aluminum die-cast molding process in which the heating means 13 2 is embedded
- 1 34 is a transfer pipe made of a material having high thermal conductivity such as aluminum or copper
- 1 35 is a transfer pipe heating section for boiling the liquid in the transfer pipe 1 34.
- 1 3 6 is a transfer pipe This is a heat control section, and is disposed between the heating means main body 133 and the transport pipe heating section 135.
- the transfer pipe heating section 135 is composed of two members 1 37 and 138, and the transfer pipe 134 is sandwiched by these two members.
- the member 1337 has a cutout 1337a centered on the center of the transfer tube 134 in the transfer direction, and the abutment with the transfer tube 134 is in the lower half and both ends of the transfer tube 134.
- 1337 has a cutout 1337a centered on the center of the transfer tube 134 in the transfer direction, and the
- the heat transfer control section 136 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 means main body 133 and 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. This heat transfer control unit 1
- the thickness direction (thermal conductivity: 5 to 7 W / mK) and the surface direction (thermal conductivity) : 100 to 20 OW / m K) with a carbon sheet 1336a and 1336b having high thermal conductivity characteristics to prevent unnecessary heat transfer suppression in parts other than the heat transfer control unit 1336 Has been eliminated.
- the member 138 has a configuration in which the entire area in the transport direction abuts on the transport pipe 134.
- These two members 1 37, 1 38 and the conveying pipe 133 are connected by screws 1 39, 1 40, 1 41, 1
- the primary assembly of the transfer pipe 134 and the transfer pipe heating section 135 is assembled to the heating means main body 133 via the heat transfer control section 136 by using screws 144 and 144.
- Reference numeral 148 denotes an evaporating portion provided in a concave shape on the upper surface of the aluminum die-cast, which is the heating means main body 133, and its surface is subjected to a water-repellent treatment such as fluorine.
- the heat transfer efficiency from the evaporator 148 to the transport water is good, the water sent to the evaporator 148 can be vaporized in a very short time. W
- the surface of the evaporating section 148 is treated with a water repellent 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.
- 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.
- 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.
- Example 3 differs from Examples 1 and 2 in that the shape of the inner surface area of the pipe is larger than the outer surface area of the pipe, and that the inner side of the pipe is subjected to a water-repellent treatment.
- 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
- 151 denotes an aluminum or Conveyor tube made of a material with high thermal conductivity of copper and having an uneven cross-sectional area, the surface of which has been subjected to a water-repellent treatment.
- 15 2 is a transfer tube for boiling the liquid in 15 1 This is the heating section.
- Reference numeral 153 denotes a heat transfer control unit, which is disposed between the heating means main unit 147 and the transport pipe heating unit 152.
- Example 3 since the water-repellent treatment such as fluorine was applied to the surface of the transfer tube 151, the contact angle of water and the like became small, and the heat conductivity was slightly reduced, but the adhesion of scale and the like also occurred. Be suppressed. This can delay the blockage of the transfer pipe 151 due to the scale adhesion. In addition, when removing the scale inside the transfer tube 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, local boiling can be generated with little heat energy by gradually heating the water. It is possible to further suppress the adhesion of the scale and the generation of the boiling sound.
- the contact angle of water and the like became small, and the heat conductivity was slightly reduced, but the adhesion of scale and the like also occurred. Be suppressed. This can delay the blockage of the transfer pipe 151 due to the scale adhesion.
- the cleaning performance of the scale
- FIG. 16 is an exploded perspective view of a steam supply mechanism according to a fourth embodiment of the present invention.
- FIG. 16 is a sectional view taken along line A-A ′ of FIG.
- 101 is a U-shaped sheathed heater that is a heat source (heating means), and 111 is heat generated by aluminum die-casting with a heat source (heating means) 101 embedded.
- the main body of the source, 112 is a transfer tube that forms a heat transfer portion made of aluminum or copper having high thermal conductivity, and 113 is a heat transfer portion for boiling the liquid in the transfer tube 112.
- This is the transport tube heating section that forms Reference numeral 114 denotes a heat transfer control unit, which is disposed between the heat source main unit 111 and the transfer tube heating unit 113.
- the transport tube heating section 1 1 3 is composed of two members 1 15 and 1 16
- the member 1 15 is provided with a notch 1 15 a centered on the center of the transfer tube 1 12 in the transfer direction, and the contact with the transfer tube 1 12 is in contact with the lower half of the transfer tube 1 12. Both ends.
- the heat transfer control unit 114 uses a material having a heat conductivity that is at least one order of magnitude lower than that of the molding material of the heat source body 111 and the material of the transfer tube 112. Iron and stainless steel can be selected, but stainless steel is selected and used in consideration of corrosion resistance. Also, in assembling the heat transfer control section 114, the thickness direction (thermal conductivity: 5 to 7 ⁇ ) is set between the heat source main body 111 side and the transfer pipe heating section 113. 1111 From the surface direction (thermal conductivity: 100 to 20 OW / m K), a carbon sheet with high thermal conductivity characteristics of 114 a and 114 b is interposed, excluding the heat transfer control unit 14 Unnecessary heat transfer suppression in parts is eliminated.
- the member 116 has a configuration in which all areas in the transport direction abut on the transport pipe 112. These two members 1 15, 1 16 and the conveying pipe 1 12 are primary assembled by screws 117, 118, 119, 120.
- the primary assembly of the transfer tube 1 1 2 and the transfer tube heating section 1 1 3 is assembled to the heat source body 1 1 1 via the heat transfer control section 1 1 4 using screws 1 2 1 and 1 2 2. I have.
- 1 2 3 is a check valve which is a component forming a heat transfer section provided upstream of the transfer pipe heating section 113 in the liquid transfer direction, and 124, 125 are power of the sheath heater 101. Connection portions for connecting the supply lead wires, and 126 to 129 are mounting holes for the heat source body 111.
- Reference numeral 130 denotes a heat energy transfer portion for evaporating the conveyed liquid, and evaporates the conveyed liquid on the side opposite to the direction in which the transfer pipe 1 1 2 of the heat source body 111 is provided. It is used as a part to transfer heat energy for heat transfer.
- the evaporating section formed with a concave material on the upper side is made of a material with a smaller thermal conductivity than the heat transfer section, especially a material that has been subjected to a surface treatment such as fluorine on a steel sheet mainly composed of iron. so is there.
- a thermistor 13 is attached to the lower surface of the heat source main body and detects the temperature of the heat source main body 13 2.
- the temperature control section (not shown) uses the output signal of the thermistor 13 2 to control the heat source. Temperature control is performed by controlling the power supply to the main unit.
- the operation and action of the steam supply mechanism configured as described above will be described below.
- the liquid to be conveyed is described as water.
- a tank (not shown) for storing this water is installed on the check valve 123 side.
- water is injected into the transfer pipe 112.
- the sheathed heater 101 is operated. With the start of operation of the sheathed heater 101, the heat source body 111 is heated and its temperature rises.
- the heat of the heat source body 1 1 1 1 1 is passed through the carbon sheets 1 1 4 a and 1 1 4 b, so that the heat transfer control section 1 1 4 and the transfer pipe heating section 1 1 3 are maintained while maintaining uniform temperature distribution characteristics. Heat is transferred to the member 1 16 via the member 115, and the transfer pipe 112 is heated.
- a check valve 123 is disposed 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 12 from the water storage tank. Water is transported by repeating this phenomenon. The transported water is guided to the evaporator 13 1 via the transport pipe 1 12. Since heat energy is transmitted from the heat source body 111 to this evaporator, the water conveyed to the evaporator is further heated and evaporated.
- the temperature of the heat source body 1 1 1 is detected by the thermistor 13 2 and the temperature of the heat source body 1 1 1 is controlled, so the amount of heat transfer to the heat transfer control section 1 1 4 is limited. .
- the amount of heat transferred to the water filled in the transfer pipe 1 12 is limited, and the supply amount to the evaporator 13 1 is stabilized.
- the supply of water from the water storage tank to the transfer pipes 1 and 1 is delayed, the amount of heat transferred to the water will decrease, and the temperature of the heat source body 1 1 1 will rise.
- the running out of water can be detected based on the change in the signal level of the thermistor 132.
- FIG. 18 shows the signal level of the thermistor 13 2 and the energized state of the sheathed heater 101.
- the distribution of the thermal energy supplied by the heat source body 1 1 1 between the transfer pipe side and the evaporation section side is The transported water can be evaporated immediately by making it about 10 times the transport pipe side.
- 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 heat source body 111, and keeps the wall temperature of the transport tube 112 almost constant. (Specifically, about 105 ° C to 120 ° C), and by keeping the heat energy of local boiling in the transport pipe 112 low, scale adherence in the transport pipe 112 is maintained. Can be suppressed.
- the heat transfer control unit 1 1 4 is configured.
- the heat transfer control section 114 is made of stainless steel and has a thickness of 2 mni and a cross-sectional area of 30 O mm 2 .
- the heat source main body 11 1 exhibits a temperature rise of 20 to 30 ° C, but the heat transfer control section 1 14 The temperature of 16 was about 5 ° C.
- the main member 1 16 is configured to diffuse heat in the water transfer direction of the transfer tube 112, and the transfer tube is made of a material with high thermal conductivity, such as copper or aluminum.
- the surface of the evaporator 13 1 is treated with a water repellent such as fluorine, the adhesion of the scale to the evaporator 13 1 is reduced, and the scale is removed and cleaned by wiping with a wet cloth.
- a water repellent such as fluorine
- FIG. 19 is an exploded perspective view of a steam supply mechanism according to a fifth embodiment of the present invention.
- Embodiment 2 is different from Embodiment 1 in that thermistor 13 3 is attached to the pipe heating section 113 and the temperature of the pipe heating section 113 is detected, so that the sheath heater 101 is energized. The control is performed.
- the thermistor 13 3 3 detects the temperature of the pipe heating section 1 13 and controls the temperature of the heat source body 1 1 1, so the temperature change of the transfer pipe 1 1 2 is immediately detected and the sheathed heater It is possible to limit the amount of heat transfer to the heat transfer control unit 114 by controlling the energization of 101. As a result, the amount of heat transferred to the water filled in the transfer pipe 1 1 2 is limited, the supply amount to the evaporator 13 1 is stabilized, and the temperature rise in the transfer pipe 1 12 can be reduced. Thus, scale adhesion can be reduced. In addition, it is possible to detect running out of water in the water storage tank.
- FIG. 15 shows the signal levels of the thermistor 133 and the energized state of the sheathed heater 101.
- the contents other than the thermistor 13 3 are the same as those of the fourth embodiment, and the description is omitted.
- FIG. 21 is a configuration diagram of a steam supply mechanism according to a sixth embodiment of the present invention
- FIG. 22 is a sectional view taken along line AA ′ of FIG.
- reference numeral 101 denotes a sheathed heater as a heating means
- 111 denotes a heat source body in which the heating means 101 is embedded
- 112 denotes a material having a high thermal conductivity of aluminum or copper.
- a transport tube 1 13 made of a material is a heating unit for boiling the liquid in the transport tube 12.
- the heat source body 1 1 1 is die-cast molded using aluminum material.
- Reference numeral 114 denotes a heat transfer amount suppressing means, which is disposed between the heat source body 111 and the heating part 113.
- the heating section 113 is composed of two members 115 and 116, and the conveying pipe 112 is sandwiched by these two members.
- the member 115 has a slit 115a centered on the center of the transfer tube 112 in the transfer direction, and the contact with the transfer tube 112 is limited to both ends.
- the member 1 16 corresponds to the main member in the present invention, and has a configuration in which all areas in the transport direction abut on the transport pipe 12. These two members 1 15 and 1 16 and the conveying pipe 1 12 are assembled with screws 1 17 and 1 18.
- the heating section 113 integrated with the transfer pipe 112 is screwed to the heat source body 111 via the heat transfer suppressing means 114 using screws 119, 120, 122. Assembled.
- 1 2 2 is a check valve provided on the upstream side of the heating section 1 13 in the liquid transport direction, and 1 2 3 and 1 2 4 are connection sections for connecting the power supply lead wire of the sheathed heater 101. is there.
- the heat transfer suppression means 114 uses a material having a heat conductivity that is at least one order of magnitude lower than that of the molding material of the heat source body 111 and the material of the transfer tube 112. Iron and stainless steel can be selected, but stainless steel is selected and used in consideration of corrosion resistance. In assembling the heat transfer amount suppressing means 114, the heat transfer amount is interposed between the heat source main body 111 side and the heating part 113 through silicon grease or a carbon sheet. Means other than suppression means 1 1 4 Unnecessary heat transfer suppression is eliminated.
- the opposite side of the heat source body 111 from the direction in which the transfer pipes 112 are provided is used as a part for transferring heat energy for evaporating the transferred liquid.
- the operation and action of the steam supply mechanism configured as described above will be described below.
- the liquid to be conveyed is described as water.
- a tank (not shown) for storing this water is installed on the check valve 122 side.
- water is injected into the transfer pipe 112.
- the sheathed heater 101 is operated. With the start of operation of the sheathed heater 101, the heat source body 111 is heated and its temperature rises. The heat of the heat source main body 111 is transferred to the main member 116 through the heat transfer suppressing means 114 and the member 115 of the heating section 113, and the transfer pipe 112 is heated. In a part where the pipe wall temperature of the transfer pipe 112 exceeds 100 ° C., local boiling of water occurs at the pipe wall part.
- Bubbles generated by the boiling expand the gas and push the water in the transport pipes 112 toward both sides in the transport direction.
- a check valve 122 is arranged on the upstream side in the transport direction, and the check valve 122 is closed by pressing water in the transport 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 122 is opened, and water is injected from the water storage tank to the transport pipe 112. Water is transported by repeating this phenomenon. The transported water is guided to a so-called evaporator (not shown). Since heat energy is transmitted to the evaporator from the heat source body 111, the water injected into the evaporator is further heated and evaporated.
- the heat energy supplied by the heat source body 111 is distributed between the transfer pipe side and the evaporator side by making the evaporator side about 10 times the transfer pipe side so that the conveyed water can be evaporated immediately. Can be done.
- the heat transfer suppression means 1 1 1 4 suppresses the amount of heat transfer to the heating section 1 13 side in response to the temperature rise of the heat source body 1 1 1, and keeps the wall temperature of the transfer pipe 1 1 2 at a substantially constant desired temperature. (Specifically, 110 ° C or less), and by suppressing the heat energy of local boiling in the transfer tube 112, the scale adhesion in the transfer tube 112 is suppressed. Can be.
- the heat transfer amount suppressing means 114 is configured.
- Heat transfer suppression means 1 1 4 is made of stainless steel and has a thickness of 3 mm and a cross-sectional area of 300 a mm 2.
- the heat source main body 11 1 exhibits a temperature rise of 20 to 30 ° C.
- the heat transfer amount suppressing means 1 14 The temperature of 16 was less than 5 ° C.
- the main member 1 16 is configured to diffuse heat in the water transport direction of the transport pipe 12, so that the water transported to the area where boiling occurs is heated in advance, so that local boiling can be performed with less heat energy. Can be caused, so that the scale adhesion can be further suppressed.
- FIG. 23 is an external view of a steam supply mechanism according to a seventh embodiment of the present invention
- FIG. 24 is a cross-sectional view taken along the line BB ′ of FIG.
- the second embodiment differs from the first embodiment in that the heat transfer area to the evaporating section side is increased and that the transfer pipe is laid sideways on the heat source body.
- 130 is a U-shaped sheathed heater as heating means
- 131 is a heat source main body made of aluminum die-cast molding with heating means 130 embedded therein
- 13 2 Is a transfer tube made of a material having high thermal conductivity, such as aluminum or copper
- 13 3 is a heating unit for boiling the liquid in the transfer tube 13 2.
- 1 34 is a heat transfer suppressing means, which is arranged between the heat source body 31 and the heating section 13 3.
- the heating unit 133 is composed of two members 135, 136, and the conveying tube 132 is sandwiched by these two members.
- the member 135 has a notch 135a around the center of the transport tube 132 in the transport direction, and the contact with the transport tube 132 is in contact with the lower half of the transport tube 132. Both ends.
- the member 1336 has a configuration in which the entire area in the transport direction comes into contact with the transport pipe 1332.
- the primary assembly of the transfer pipe 13 2 and the heating section 13 3 is connected to the heat source body 13 1 via the heat transfer suppressing means 13 4 using screws 13 9, 14 0, 14 1. Assembled.
- 1 4 2 and 1 4 3 are connection parts for connecting the power supply lead wires of the heater 130, 1 4 4 to 1
- Reference numeral 47 denotes a mounting hole of the heat source body 131
- reference numeral 148 denotes a heat transfer portion of the heat energy for evaporating the conveyed liquid.
- the steam supply mechanism configured as described above, by increasing the heat transfer area of heat energy to the evaporator, it is possible to mitigate the decrease in the amount of heat transfer accompanying scale adhesion in the evaporator. Evaporation of the transported liquid can be performed more stably. Further, the configuration in which the heat transfer from the heat source body 13 1 is transferred from the side of the transfer pipe 13 2 allows bubbles generated by boiling in the transfer pipe 13 2 to immediately move upward in the direction of gravity. When these bubbles are generated, the temperature of the inner wall surface, which is not exposed to water, immediately rises to a high temperature. And the scale adhesion can be further suppressed. In addition, a large cutout 135a is provided in the member 135 constituting the heating section 133, so that the heat transfer suppressing means 134, the heating section 133 to the heat source body 131 are provided. Assembly is easy.
- FIG. 25 is a sectional view of a steam supply mechanism according to an eighth embodiment of the present invention. Also, members that are the same or have the same functions as in the seventh embodiment are indicated by the same numbers.
- FIG. 25 differs from Example 7 in that the transfer tube 150 is arranged below the heat source body 13 1. In this way, the use of the heat transfer suppression means enables the arrangement of the transfer pipes to be freely selected for the same heat source body.
- FIG. 26 shows a configuration diagram of a steam supply mechanism according to the ninth embodiment of the present invention.
- 160 is a sheath heater which is a heating means
- 161 is a heat source body integrally molded with the sheath heater 160
- 162 is a heat pipe which is a heat transfer suppressing means, and one end is heated.
- the source body 16 1 is in contact with the side surface and the other end is in contact with the transfer pipe 16 3.
- a liquid tank 165 is disposed upstream of the transfer pipe 163 in the transfer direction via a check valve 164.
- the downstream side of the transport pipe 163 is open to the atmosphere, and a discharge port 167 is provided via a connected pipe 166.
- .168 is an evaporating section for storing the transported liquid, which is formed by drawing a sheet metal. This drawing process
- the heat source body 16 1 is in contact with the evaporating section 16 8.
- Reference numeral 169 denotes a heating chamber for storing the object to be heated, and the stored object to be heated is heated using steam generated in the evaporating section 68.
- the steam supply mechanism configured as described above uses a heat pipe 16 2 as the heat transfer suppression means and uses water as the working fluid of the heat pipe, so that the part that heats the transfer pipe is condensed by the heat pipe. And heat can be transferred to the conveying pipe at a temperature of at most 100 ° C. This makes it possible to reliably prevent the scale from adhering in the transfer pipe.
- the heat source body and the transfer tube can be arranged separately, and the transfer of the transfer tube during mounting is eliminated to reduce the transfer pressure loss, thereby facilitating the flow of bubbles due to boiling and increasing the transfer speed of the liquid. Therefore, scale adhesion can be further suppressed.
- FIG. 27 is a configuration diagram of a steam supply mechanism according to the tenth embodiment of the present invention
- FIG. 28 is a sectional view taken along the line AA ′ of FIG. 27.
- 101 is a U-shaped sheathed heater as a heating means
- 111 is a heating means main body made of an aluminum die-cast molding process in which the heating means 101 is embedded
- 1 1 2 Is a transfer pipe made of a material having a high thermal conductivity with soft hardness of aluminum or copper
- 1 13 is a heating unit for boiling the liquid in the transfer pipe 12.
- the heating means main body 111 is formed by die-casting using an aluminum material.
- Reference numeral 114 denotes heat transfer suppressing means, which is arranged between the heating means main body 111 and the heating section 113.
- the heating section 113 is composed of two members 115, 116, and the conveying pipe 112 is sandwiched by these two members.
- the member 1 15 is provided with a semicircular abutting portion 115 a at the center of the transport pipe 112 in the transport direction, and is provided in all areas in the transport direction with the transport pipe 112. In contact.
- the member 116 is also provided with a semicircular contact portion 116a so that the entire area in the transport direction abuts the transport pipe 122.
- the heating section 1 13 integrally assembled with the transfer pipe 1 1 2 is assembled to the heating means main body 1 1 1 via the heat transfer suppressing means 1 1 4 using screws 1 2 1 and 1 2 2.
- 1 2 3 is a check valve provided on the upstream side of the heating section 1 1 3 in the liquid transfer direction, and 1 2 4 and 1 2 5 are sheathed heaters 10 1 This is a connection part for connecting the power supply lead wires of the above.
- the heat transfer suppression means 114 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 111 and 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.
- silicon grease or carbon sheet 111b, 114b should be provided between the heating means body 111 side and the heating section 113. Unnecessary heat transfer suppression in portions other than the heat transfer amount suppression means 114 is eliminated by intervening.
- FIG. 29 is a cross-sectional view showing a state in which the transport tube 112 is sandwiched between the two members 115, 116 of the transport tube heating unit 113.
- the transfer tube 1 1 2 is semicircular. Grooves 1 1 5a, 1 1 6a and cannot be in contact with each other, creating spaces 1 3 2a and 1 3 2b. 5, 1 1 6 cannot be fixed closely.
- the width A of the semicircular grooves 1 15a and 116a is larger than the outer dimensions of the transfer pipe 112, and the semicircular grooves 1 If the depth dimension B of 15 a, 1 16 a is larger than the outer radius dimension X // 2 of the transport pipe 1 1 2, the transport pipe 1 1 2 has a semicircular groove 1 1 5 a, 1 1 6a, and the transfer tube 112 is tightly fixed to the transfer tube heating section 113. In this state, a space 134 is created between the two members 1 15 and 1 16. However, when tightened with screws as shown in Fig.
- the transfer tube 1 1 2 Since it is made of copper or copper, it can be easily deformed by being sandwiched, and the two members 1 15 and 1 16 can be tightly fixed. Even in this state, it has high thermal conductivity and flexibility like silicon grease The thermal conductivity can be further increased by sandwiching the material 13 1.
- FIG. 30 is an external view showing the configuration of the transfer pipes 112.
- the heating means main body 1 1 1 1 is arranged in contact with the lower surface of the water supply tray 2 5, and heat is transferred to the horizontal pipe section 1 40 of the transfer pipe 1 1 2 through the heating section 1 1 3.
- the horizontal piping section 140 is in contact with the heating section 113 at the lowermost part in the liquid transport direction of the transport pipe 112, and even if local boiling occurs in the transport pipe and bubbles are generated, the bubbles are moved in the direction of gravity. As it tries to move upward, it passes through the bent portion 142 that is above the contact portion with the heating portion 113 located at the bottom, and takes in the air that is configured above the vertical piping portion 141. Released to the outside through mouth (not shown).
- the operation and action of the steam supply mechanism configured as described above will be described below.
- the liquid to be conveyed is described as water.
- a tank (not shown) for storing this water is installed on the check valve 123 side.
- water is injected into the transfer pipe 112.
- the sheathed heater 101 is operated. With the start of operation of the sheathed heater 101, 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 through the heat transfer suppressing means 114 and the member 115 of the heating section 113, and the transfer pipe 112 is heated. In areas where the temperature of the transport pipe 112 exceeds 100 ° C, local boiling of water occurs at the pipe wall.
- Bubbles generated by the boiling expand the gas and push the water in the transport pipes 112 toward both sides in the transport direction.
- a check valve 123 is disposed 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 conveyed water is guided to a so-called evaporating section 25. Since heat energy is transmitted from the heating means main body 11 to the evaporating section 25, the water injected into the evaporating section 25 is further heated and evaporated.
- bent portion 144 connecting the horizontal piping portion 140 and the vertical piping portion 141 has a large bent half-dimension, which reduces the liquid transport resistance and reduces the flow of air bubbles associated with boiling. As a result, it is possible to suppress the adhesion of scale, and also suppress the boiling noise generated when the liquid expanded due to the generation of bubbles flows at a stroke.
- FIG. 31 is an external view of a steam supply mechanism according to the eleventh embodiment of the present invention.
- Example 11 differs from Example 10 in that the heating unit is configured to be joined to a portion where the transport pipe is inclined upward in the liquid transport direction.
- the heating means main body 1 11 is disposed in contact with the lower surface of the water supply tray 25, and heat is transmitted to the horizontal piping section 1 46 of the transfer pipe 144 through the heating section 144.
- the horizontal piping section 146 is inclined upward in the liquid transport direction of the transport pipe 143, and is in contact with the heating section 145 at the inclined portion, and temporary boiling occurs in the transport pipe and bubbles Even if air bubbles are generated, the air bubbles tend to move upward in the direction of gravity, so that they pass through the upwardly bent portion 1 48 from the contact portion with the upwardly inclined heating portion 144, and the vertical piping portion 14
- the air is discharged to the outside through an air intake port (not shown) formed above 7.
- the content of the configuration of the heating unit 145 is the same as that of the first embodiment, and the description is omitted.
- the horizontal piping section 146 is inclined upward in the liquid transport direction of the transport pipe 144, and contacts the heating section 144 at the inclined portion.
- bubbles generated by the boiling phenomenon in the transfer pipe 144 move upward in the direction of gravity, and flow is generated in the horizontal piping section 144 inclined upward in the liquid transfer direction.
- the temperature of the inner wall surface which is not exposed to water, will immediately rise to high temperatures. Water can be immediately flowed into the area where the darka occurs, and the rise in the temperature of the transport pipe wall can be suppressed, and scale adhesion can be further suppressed.
- FIG. 32 is a configuration diagram of a steam supply mechanism in the 12th embodiment of the present invention
- FIG. 33 is a cross-sectional view taken along the line AA ′ of FIG.
- 101 is a U-shaped sheath heater as a heating means
- 111 is a heating means main body made of aluminum die-cast molding processing in which the heating means 101 is embedded
- 111 is a heating means body.
- Reference numeral 2 denotes a transport tube made of a material having a high thermal conductivity with soft hardness of aluminum or copper
- reference numeral 1 13 denotes a heating unit for boiling the liquid in the transport tube 12.
- the heating means main body 111 is formed by die-casting using an aluminum material.
- Reference numeral 114 denotes heat transfer suppressing means, which is arranged between the heating means main body 111 and the heating section 113.
- the heating unit 113 is composed of two members 115 and 116, and the conveying pipe 112 is sandwiched by these two members.
- the member 115 has a semicircular abutment 1115a at the center of the transport tube 112 in the transport direction, and contacts the transport tube 112 in all areas in the transport direction.
- the member 1 16 is also provided with a semicircular abutting portion 1 16 a, so that the entire area in the transport direction abuts on the transport pipe 12.
- the heating section 1 13 integrally assembled with the transfer pipe 1 1 2 is assembled to the heating means main body 1 1 1 via the heat transfer suppressing means 1 1 4 using screws 1 2 1 and 1 2 2.
- Reference numeral 123 denotes a check valve provided on the upstream side of the heating unit 113 in the liquid transport direction, and 124, 125 are connection parts for connecting the power supply lead wires of the sheathed heater 101.
- the heat transfer suppression means 114 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 111 and 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.
- FIG. 34 is an explanatory diagram of a mounting structure on the side of the device of the steam supply mechanism.
- the air intake (air discharge section) 29 f is provided above the vertical pipe section 29 c and at the top of the water supply channel (transport pipe) 29.
- the air inlet (air discharge part) 29 The vertical joint 50 of 90 mm is joined to the upper piping part 29 d in a direction substantially perpendicular to the upper pipe part 29 d, and the tip of the bent part is slightly inclined above horizontal.
- a front end discharge hole 52 is provided toward the rear wall 54 of the heating chamber. Further, the tip discharge hole 52 is configured to be smaller than the dimension of the transfer pipe joint 53.
- the operation and action of the steam supply mechanism configured as described above will be described below.
- the liquid to be conveyed is described as water.
- a tank (not shown) for storing this water is installed on the check valve 123 side.
- water is injected into the transfer pipe 112.
- the season heater 101 is operated.
- the heating means main body 111 With the start of operation of the sheathed heater 101, 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 through the heat transfer suppressing means 114 and the member 115 of the heating section 113, and the transfer pipe 112 is heated.
- the transfer pipe 112 In a part where the pipe wall temperature of the transfer pipe 112 exceeds 100 ° C., local boiling of water occurs at the pipe wall part. Bubbles generated by the boiling expand the gas and push the water in the transport pipes 112 toward both sides in the transport direction.
- a check valve 123 is disposed 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 conveyed water is guided to a so-called evaporating section 25. Since the thermal energy is transmitted from the heating means main body 11 to the evaporating section 25, the water injected into the evaporating section 25 is further heated and evaporated.
- the bubbles generated by the boiling phenomena in the transfer pipe 112 move upward in the direction of gravity.
- the temperature of the inner wall surface that is not exposed to water tends to rise immediately.However, water is immediately flowed into the area where the boiling water is generated to suppress the rise in the temperature of the transport tube wall surface and to prevent scale adhesion. Can be.
- the bubbles generated by the boiling phenomenon in the transfer pipe 112 move upward in the direction of gravity, and move from the vertical pipe part 29c to the upper pipe part 29d.
- Air inlet (air outlet) 2 9 Since f is provided at the top of the water supply channel (conveyance pipe) 29, the moving air bubbles are discharged to the outside from the air intake (air discharge section) 29f without staying at the top. You.
- the vertical joint 50 is disposed substantially perpendicular to the liquid transport direction of the upper piping section 29d, there is little influence on the liquid transport, and the distal discharge hole 52 is connected to the transport pipe. Since it is smaller than the part 53, the pressure is increased in the liquid transport direction, and water is hardly penetrated.
- the tip of the bent portion 51 is slightly inclined above the horizontal, and even if steam generated from boiling water enters the air intake (air discharge portion) 29 f and forms dew inside, However, since the condensed water falls along the slope, it is not discharged from the tip discharge hole 52, but is guided to the vertical joint 50 and returns to the water supply channel (conveyance pipe) 29. In addition, it is possible to prevent the danger of insulation failure due to dripping of the dew condensation to the outside, and it is also possible to effectively reuse the dew condensation water.
- the high-frequency heating device with a steam generating function of the present invention obtains a pump function by boiling water in the water supply channel due to heat generated by the heating means, and eliminates the need for a dedicated pump means. Simplification and downsizing can be realized.
- control of the steam supply amount can be achieved only by controlling the heat generation operation of the heating means, the control process can be simplified.
- the uniform supply of the heating steam in the heating chamber can be realized at low cost.
- the heat transfer to the heat transfer section is suppressed while the heat energy to the evaporation section is suppressed while the heat energy to the evaporation section is secured.
- the scale adhesion due to the local boiling ⁇ of ⁇ can be suppressed.
- the thermal energy supply balance between the heat transfer section side and the evaporation section side is good. It is possible to provide a steam supply mechanism that keeps the temperature and continuously generates high-temperature steam close to 10 ° C.
- air bubbles generated by boiling the water in the transport pipe are discharged from the air discharge section formed at the top of the water supply channel, thereby preventing air bubbles from staying at the junction with the heating means and boiling.
- the liquid immediately flows into the generating section to suppress the rise in the wall temperature of the transfer pipe, ensure stable liquid transfer capability, suppress scale adhesion, and continuously generate high-temperature steam.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Electric Ovens (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04733952A EP1626228A1 (en) | 2003-05-20 | 2004-05-19 | High frequency heater with vapor generating function |
US10/557,354 US7326893B2 (en) | 2003-05-20 | 2004-05-19 | High frequency heating apparatus having steam generating function |
Applications Claiming Priority (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-141723 | 2003-05-20 | ||
JP2003141725A JP4059139B2 (ja) | 2003-05-20 | 2003-05-20 | 蒸気発生機能付き高周波加熱装置 |
JP2003141724A JP3767574B2 (ja) | 2003-05-20 | 2003-05-20 | 蒸気発生機能付き高周波加熱装置 |
JP2003141723A JP3714339B2 (ja) | 2003-05-20 | 2003-05-20 | 蒸気発生機能付き高周波加熱装置 |
JP2003-141724 | 2003-05-20 | ||
JP2003-141725 | 2003-05-20 | ||
JP2003184171A JP3788446B2 (ja) | 2003-06-27 | 2003-06-27 | 蒸気発生機能付き高周波加熱装置 |
JP2003-184171 | 2003-06-27 | ||
JP2003-198313 | 2003-07-17 | ||
JP2003198313A JP3767584B2 (ja) | 2003-07-17 | 2003-07-17 | 蒸気発生機能付き高周波加熱装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004104481A1 true WO2004104481A1 (ja) | 2004-12-02 |
Family
ID=33479839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/007111 WO2004104481A1 (ja) | 2003-05-20 | 2004-05-19 | 蒸気発生機能付高周波加熱装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7326893B2 (ja) |
EP (1) | EP1626228A1 (ja) |
WO (1) | WO2004104481A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2884688A1 (fr) * | 2005-04-22 | 2006-10-27 | Premark Feg Llc | Four professionnel grande cuisine a energie hyperfrequences confinee dans la cavite de cuisson |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1872623B1 (en) * | 2005-04-12 | 2010-11-17 | The Technology Partnership Plc | Cooking appliance |
JP4435246B2 (ja) * | 2008-06-26 | 2010-03-17 | シャープ株式会社 | 蒸気発生装置及び加熱調理器 |
US8303727B2 (en) * | 2008-12-22 | 2012-11-06 | Whirlpool Corporation | Steam generator for a dishwasher |
JP4586111B1 (ja) * | 2009-04-16 | 2010-11-24 | シャープ株式会社 | 加熱調理器 |
US9879866B2 (en) * | 2009-04-28 | 2018-01-30 | Sharp Kabushiki Kaisha | Cooking device |
EP2524571A4 (en) | 2010-01-11 | 2016-06-29 | Waters Technologies Corp | HEATING COLUMN WITH ACTIVE PREHEATING |
CN102834671B (zh) * | 2010-04-28 | 2015-05-20 | 夏普株式会社 | 加热烹调器 |
US9557304B2 (en) | 2012-03-08 | 2017-01-31 | Waters Technologies Corporation | Pre-column heating of mobile phase solvent in chromatography systems |
US9841182B2 (en) | 2012-03-15 | 2017-12-12 | Panasonic Intellectual Property Management Co., Ltd. | Steam generator and heating cooker comprising steam generator |
US20130264327A1 (en) * | 2012-04-05 | 2013-10-10 | Yao-Tsung Kao | Household Atomized Oven |
US20200263879A1 (en) * | 2015-12-29 | 2020-08-20 | Arcelik Anonim Sirketi | An oven comprising a water tank |
US11618992B2 (en) | 2017-06-16 | 2023-04-04 | Spectrum Brands, Inc. | Steam generator with pre-heat chamber and filter |
JP6854426B2 (ja) * | 2018-02-28 | 2021-04-07 | パナソニックIpマネジメント株式会社 | 加熱調理器 |
US10955142B2 (en) | 2018-07-03 | 2021-03-23 | Electrolux Home Products, Inc. | Cooking oven with steam generator inside cooking cavity |
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JPS5410460A (en) * | 1977-06-24 | 1979-01-26 | Mitsubishi Electric Corp | Cooker |
JPS5678901U (ja) * | 1979-11-22 | 1981-06-26 | ||
JPH08178298A (ja) * | 1994-12-28 | 1996-07-12 | Matsushita Electric Ind Co Ltd | 高周波加熱装置 |
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DE2659079C3 (de) | 1976-12-27 | 1979-08-09 | Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart | Anzeigevorrichtung für den Verkalkungsgrad von Wassererhitzern in elektrischen Haushaltgeraten, insbesondere elektrischen Kaffeemaschinen |
JPS54115448A (en) | 1978-03-01 | 1979-09-08 | Mitsubishi Electric Corp | Cooking device |
JPS5678901A (en) | 1979-11-30 | 1981-06-29 | Matsushita Electric Works Ltd | Method of repairing resin impregnated woody veneer |
JPS61141336A (ja) | 1984-12-14 | 1986-06-28 | 松下電器産業株式会社 | コ−ヒ沸し器の熱板 |
JPH0763427B2 (ja) | 1987-01-16 | 1995-07-12 | フイリツプス株式会社 | カプチーノ対応コーヒーメーカー |
JP3751057B2 (ja) * | 1995-10-04 | 2006-03-01 | 松下電器産業株式会社 | マイクロ波加熱装置 |
US6133558A (en) * | 1996-06-24 | 2000-10-17 | Matsushita Electric Industrial Co., Ltd. | Microwave steam heater with microwave and steam generators controlled to equalize workpiece inner and surface temperatures |
AU4032497A (en) * | 1996-09-03 | 1998-03-26 | Matsushita Electric Industrial Co., Ltd. | Microwave heating device |
JP2000232943A (ja) | 1999-02-15 | 2000-08-29 | Toshitaka Magara | コーヒーメーカーの抽出温度調整のための熱交換器 |
JP2003038354A (ja) | 2001-08-03 | 2003-02-12 | Matsushita Electric Ind Co Ltd | コーヒー沸かし器 |
ATE449523T1 (de) | 2002-03-12 | 2009-12-15 | Panasonic Corp | Hochfrequenzheizsvorrichtung und steuerungsverfahren derselben |
JP3827303B2 (ja) | 2002-03-12 | 2006-09-27 | 松下電器産業株式会社 | 蒸気発生機能付き高周波加熱装置 |
JP2004061001A (ja) | 2002-07-30 | 2004-02-26 | Rinnai Corp | 鍋底温度センサ付きガスコンロ |
JP3714339B2 (ja) | 2003-05-20 | 2005-11-09 | 松下電器産業株式会社 | 蒸気発生機能付き高周波加熱装置 |
-
2004
- 2004-05-19 WO PCT/JP2004/007111 patent/WO2004104481A1/ja active Application Filing
- 2004-05-19 US US10/557,354 patent/US7326893B2/en not_active Expired - Fee Related
- 2004-05-19 EP EP04733952A patent/EP1626228A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5410460A (en) * | 1977-06-24 | 1979-01-26 | Mitsubishi Electric Corp | Cooker |
JPS5678901U (ja) * | 1979-11-22 | 1981-06-26 | ||
JPH08178298A (ja) * | 1994-12-28 | 1996-07-12 | Matsushita Electric Ind Co Ltd | 高周波加熱装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2884688A1 (fr) * | 2005-04-22 | 2006-10-27 | Premark Feg Llc | Four professionnel grande cuisine a energie hyperfrequences confinee dans la cavite de cuisson |
Also Published As
Publication number | Publication date |
---|---|
US7326893B2 (en) | 2008-02-05 |
US20070029313A1 (en) | 2007-02-08 |
EP1626228A1 (en) | 2006-02-15 |
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