JP4059264B2 - High-frequency heating device with steam generation function - Google Patents

Description

  The present invention includes high-frequency generating means for outputting a high frequency in a heating chamber that accommodates an object to be heated, and a steam supply mechanism that supplies steam to the heating chamber, and supplies at least one of the high frequency and the steam to the heating chamber. The present invention relates to a high-frequency heating apparatus with a steam generation function that heats an object to be heated.

  A high-frequency heating device provided with high-frequency generating means for outputting a high frequency 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 time. It rapidly spread as a microwave oven.

  However, there are inconveniences such as a limited cooking range only by heating by high frequency heating.

Therefore, a high-frequency heating device has been proposed in which an electric heater that generates heat in the heating chamber is added to enable oven heating. In recent years, a steam supply mechanism that supplies heating steam to the heating chamber has been added, and high-temperature steam has been added. There has been proposed a high-frequency heating apparatus with a steam generation function that enables cooking by heating (for example, see Patent Document 1).
JP 54-115448 A

  However, the steam supply mechanism in the conventional high-frequency heating device is provided with a water storage tank that is detachably attached to the main body of the device and a window for allowing the water amount in the water storage tank to be visually checked. Although the amount of water used varies depending on the cooking menu, depending on the menu that requires a large amount of water, the water in the storage tank may be depleted during cooking, and the steam supply may be interrupted. There is a risk that the quality of the food may be deteriorated, and the temperature of the steam supply mechanism becomes hot, the temperature of the components constituting the steam supply mechanism is exceeded, and there is a risk of component destruction or abnormal odors. .

Further, using a sensor for detecting the amount of water in the water tank, by providing a means for detecting that the water is reduced, if and to the warning notification unless necessary amount of water to such cooking start time, the above-mentioned problems Although it can be solved, there is a problem that the configuration becomes complicated.

  The present invention has been made in view of the above-described problems, and provides a high-reliability high-frequency heating device with a steam generation function that can appropriately supply steam with a simple configuration and detect empty baking of a tray. For the purpose.

In order to solve the above-described conventional problems, a heating cooker according to the present invention includes a high-frequency generating unit that outputs a high frequency into a heating chamber that houses an object to be heated, and a steam supply mechanism that supplies heating steam into the heating chamber. A high-frequency heating apparatus with a steam generating function for supplying heat to the heating chamber by supplying at least one of high-frequency and heating steam to the heating chamber, the steam supply mechanism being detachable from the apparatus main body receiving and equipped the cistern, a water supply pan, a heating means for evaporating water in the water supply pan and heating the water pan, heat conduction through the heated zone by the heating means of water of the water storage tank and a water supply passage leading to the water supply pan by thermal expansion Te, the steam supply mechanism, a temperature detecting means for detecting the temperature of the heating means or the water supply pan provided, before on the basis of the detected temperature Control of energization or interruption of the heating means, or performs a warning for the water supply.

According to the high-frequency heating device with a steam generation function of the present invention, the energization or shut-off of the heating means is controlled based on the temperature detected by the temperature detecting means, or an alarm is given by detecting that the amount of water in the water storage tank is exhausted. It is possible to supply steam appropriately with a simple configuration, and by detecting empty baking in the water supply tray , steam cooking performance can be improved and high-frequency heating with a reliable steam generation function An apparatus can be provided.

1st invention is equipped with the high frequency generation | occurrence | production means which outputs a high frequency in the heating chamber which accommodates to-be-heated material, and the vapor | steam supply mechanism which supplies heating steam into a heating chamber, and heats at least any one of a high frequency and heating vapor | steam A high-frequency heating device with a steam generating function for supplying heat to a chamber and heating an object to be heated, wherein the steam supply mechanism heats a water storage tank, a water supply tray, and a water supply tray that are detachably attached to the apparatus body. comprising a heating means for evaporating the water of the water supply pan, and a water supply passage of water of the water storage tank via the heating zone by the heating means directs the water pan by thermal expansion by the heat conduction Te, steam supply mechanism The temperature detecting means for detecting the temperature is provided in the heating means or the water supply tray , and the energization or shut-off control of the heating means or the alarm for water supply is performed based on the detected temperature. Thus, to control the proper amount of steam, also allows the use in the heat-resistant temperature of the feed water pan, can be for example achieved preventing deterioration of fluorinated material which has been subjected to the water receiving tray.

The second invention is a water supply tray in which the water supply tray of the first invention is provided in the heating chamber, and the temperature detection means is provided on the heating means or the back surface of the water supply tray. Thereby, a water supply receptacle can be provided in a heating chamber and it can be set as a simple structure.

In the third invention, in particular, the water storage tank of the first or second invention is disposed at a position higher than the heating area of the water supply channel. Thereby, it can flow into the heating area of the water supply channel in the position where the water of a water storage tank is low, and can guide water to a water supply tray efficiently.

  According to a fourth aspect of the present invention, the steam supply mechanism rises to a predetermined abnormal value at which the detected temperature level detected by the temperature detecting means is higher than the upper limit reference value, and a predetermined time has elapsed since the abnormal value was exceeded. Is also determined to be zero in the water storage tank when it does not fall below the lower reference value. As a result, it is possible to extend the life of the heater and to use the heater within the heat-resistant temperature of the water supply tray. For example, it is possible to prevent deterioration of the fluorine treatment material applied to the water supply tray.

  According to a fifth aspect of the present invention, the steam supply mechanism rises to a predetermined abnormal value where the detected temperature level detected by the temperature detecting means is higher than the upper limit reference value, and the detected temperature level falls within a predetermined time after the abnormal value is exceeded. It is assumed that there is water in the water tank when it decreases. Accordingly, it is possible to provide a cooking device that suppresses erroneous determination of residual water 0 when there is residual water in the water storage tank and can perform steam heating without failure.

  In the sixth invention, the abnormal value, the upper limit reference value, and the lower limit reference value are set to optimum values by the cooking menu. Thereby, it is possible to control the optimum amount of steam according to the cooking menu, and to improve the steam cooking performance.

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

(Embodiment 1)
1 and 2 are external views of a high-frequency heating device with a steam generation function according to the present invention.

  The high-frequency heating apparatus 100 with a steam generating function of this embodiment is used as a microwave oven capable of high-frequency heating and heating with heating steam for cooking food, and a heating chamber that houses a heated object such as food 3 is provided with a high frequency generating means (magnetron) 5 for outputting a high frequency and a steam supply mechanism 7 for supplying heating steam into the heating chamber 3, and at least one of the high frequency and the heating steam is supplied to the heating chamber 3. Then, 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 that is open on the front surface, and an opening / closing door 13 with a translucent window 13 a that opens and closes the heated object outlet of the heating chamber 3 is formed on the front surface of the main body case 10. Is provided. The open / close door 13 can be opened and closed in the vertical direction by the lower end being hinged to the lower edge of the main body case 10. By grasping the handle 13 b mounted on the upper part and pulling it toward the front, FIG. Show, can be open.

  A predetermined heat insulating space is secured 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.

Particularly space behind the heating chamber 3, the atmosphere in the heating chamber 3 has a circulation fan and the circulating fan chamber that houses a driving motor (not shown) to 撹拌wall of the rear surface of the heating chamber 3, It is a partition wall that defines the heating chamber 3 and the circulation fan chamber.

  Although not shown, the partition wall 15, which is the rear wall of the heating chamber 3, has an intake vent hole for intake air from the heating chamber 3 side to the circulation fan chamber side, and the circulation fan chamber side to the heating chamber 3 side. A ventilation vent for blowing air is provided separately from the formation area. Each ventilation hole is formed as a large number of punch holes.

  In the case of the present embodiment, as shown in FIG. 2, the high-frequency generating means (magnetron) 5 is disposed in the 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 stirrer blades 17. The high frequency from the high frequency generating means 5 is irradiated to the rotating stirrer blade 17 so that the stirrer blade 17 supplies high frequency to the heating chamber 3 while stirring. Note that the high-frequency generating means 5 and the stirrer blade 17 are not limited to the bottom of the heating chamber 3, and can be provided on the upper surface or the side of the heating chamber 3.

Steam supply mechanism 7, as shown in FIG. 3, the water tank 21 of 1 group to be mounted detachably to the apparatus main body, and two water receiving tray 25 to be mounted to the pressurized heat chamber 3, these water pan A heating means 27 for evaporating water on the water supply tray 25 by heating 25, a two-system water supply passage 29 for guiding the water in the water storage tank 21 to the water supply tray 25 via a heating area by the heating means 27, and a water storage tank 21 and a water stop valve 45 on the water supply side and a water stop valve 45 on the water supply side that prevents leakage of water in the water storage tank and the water supply passage when the water storage tank 21 is removed. And a check valve 47 that is disposed downstream of the water stop valve 45 on the water supply channel side and prevents the reverse flow of water from the water supply channel 29 to the water storage tank 21.

  The characteristic configuration of the two water supply channels 29 described above will be described in detail later, but the distance from the heating area by 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.

Incidentally, the steam supply mechanism 7, as shown in FIG. 4, Ru can be water by supplying a configuration for generating steam to a water supply pan 25 from the water supply path 29 of one system.

In the present embodiment, water tank 21 is a Bian flat rectangular cartridge which is excellent in handling properties, can be easily attached to and detached from the apparatus main body (main body case 10), moreover, by the heating in the heating chamber 3 As shown in FIG. 1, it is inserted and attached to the tank storage portion 35 assembled on the side surface of the main body case 10 so as to be hardly damaged by heat.

  As shown in FIG. 5, the tank storage portion 35 is hinged on the rear end side to the main body case 10, and when the engagement of the front end portion indicated by an arrow (A) in FIG. As indicated by an arrow (b) in b), the front end side rotates outward, and the tank insertion port 36 at the front end is exposed.

  In a state where the tank insertion port 36 is exposed, the water storage tank 21 can be extracted in a direction indicated by an arrow (c) in FIG.

  The 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.

Water tank 21, as shown in FIG. 6, and Bian flat rectangular parallelepiped container body 22 which is open upward, and a lid 23 covering the upper opening of the container body 22. The container body 22 and lid 23, Ru is formed of a resin Empire.

  The container main body 22 is formed of a transparent resin so that the remaining amount of water inside can be visually recognized, and scales 22 a indicating the remaining water level are provided on both side surfaces of the container main body 22. As shown in FIGS. 5 and 7, the portion equipped with the scale 22 a is exposed to the outside through a notch window 37 formed at the front edge of the tank storage portion 35, and is externally stored in the water storage tank 21. The remaining amount of water is visible.

  As shown in FIG. 6, a cylindrical connection port 22 b that fits and connects to the water supply passage 29 is provided at a position near the lower portion of the back surface of the container body 22. As shown in FIG. 8A, the connection port 22b has a tank side water stop valve 33 that closes the connection port 22b and prevents the stored water from flowing out when the water storage tank 21 is taken out of the apparatus main body. Equipped.

  The water supply tray 25 of the present embodiment is formed integrally with the bottom plate 4 by forming a recess for receiving water supply in a part of the bottom plate 4 of the heating chamber 3.

  As described above, the water supply trays 25 are respectively provided on the left and right of the rear portion of the bottom plate 4 in the present embodiment.

  The heating means 27 is a sheathed heater arranged in contact with the lower surface of each water supply tray 25. As shown in FIG. 9, the heater 27 is attached to an assembly block 27a made of aluminum die cast that is attached in close contact with the back surface of the water supply tray 25. It is a structure in which the main body is assembled. 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 extended from the assembly block 27a.

  The thermistor 41 is mounted 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).

Thermistor 41, as shown in FIG. 10, when the water in the water supply pan 25 is water from the water storage tank 21 is filled, the detection temperature level increasing temperature of the heating means 2 7 rises. However, if water is low to the water receiving tray 25 shown in Symbols a, since the heating means 2 7 has been made that the current is detected temperature level is rapidly increased, exceeding the upper limit reference value indicated by b was not shown of the control circuit at the time interrupts the current supply to the heating means 2 7. If water is lost to the water receiving tray 25, it exceeds the abnormal value indicated by f the overshoot be deenergized to the heating means 2 7. Thereafter, the energization of the heating means 2 7 is blocked, the detection temperature level of the thermistor 41 drops. Eventually, the detection temperature level of the thermistor 41, when it reaches the lower limit reference value indicated by c, the control circuit is again implemented energization to the heating means 2 7 for heating the heater. Thereafter, the detected temperature level of the thermistor 41 rises due to heating by the heater, and exceeds the upper reference value indicated by d. At this time, turning off the power to the heating means 2 7 again. Thereafter, even if water remains in the water supply tray 25, the detected temperature level of the thermistor 41 rises to some extent due to overshooting. However, when the temperature further rises and exceeds the abnormal value indicated by g, the control circuit causes water to enter the water supply tray 25. no heating means 2 7 it is determined that the baking conditions, as indicated by e, performs control to stop the steam heat treatment an alarm. Note that the abnormal value indicated by g does not rise to that temperature in the presence of water, but is set to a temperature that can be detected to rise to that temperature in the absence of water. Can be used.

Further, as shown in FIG. 11, the detected temperature level detected by the thermistor 41, increased with increasing temperature of the heating means 2 7, the control circuit at the time exceeds the upper limit reference value indicated by h is the heating means 2 7 from the time exceeds the abnormal value indicated by the even deenergized i, if the predetermined time has elapsed until reaching the lower reference value, the heating means 2 7 is empty baked state without water in the water supply pan 25 Control is performed to stop the steam heating by issuing an alarm. Alternatively, when the detected temperature level detected by the thermistor 41 further rises from the time when it exceeds the abnormal value indicated by i, the predetermined time may be measured from the time when the rise value disappears and the peak level is reached.

  In the present embodiment, as described above, with a single thermistor, it is possible to perform the generation control of the steam amount and to detect abnormality when water is lost in the water supply tray.

  In addition, the above-described control makes it possible to extend the life of the heater and to use the heater within the heat-resistant temperature of the water supply tray, thereby preventing deterioration of the fluororesin coating surface of the water supply tray.

  In this embodiment, as described above, the cycle in which the heater is turned on and off is repeated, and when the temperature at which the thermistor becomes an abnormal value is detected twice, it is determined that there is no water in the water supply tray. The determination is not limited to two times but may be performed multiple times.

Moreover, as shown FIG 12, a detection temperature level detected by the thermistor 41, increased with increasing temperature of the heating means 2 7, the control circuit at the time exceeds the upper limit reference value the power supply to the heating means 2 7 Even if it is shut off or exceeds the abnormal value indicated by j, if water is subsequently poured into the saucer 25 and the detected temperature level rapidly decreases, that is, if the level indicated by l decreases while the predetermined time k elapses. It is considered that there is water and is determined not to be baked. Then, it is assumed that the number of times the thermistor described with reference to FIG. 10 has reached an abnormal value is returned to 0, and the sequence of the burn-in determination is performed from the beginning.

  As a result, for example, when the detection temperature of the thermistor 41 becomes high due to some noise, or when there is a problem on the water supply path and there is a case where sufficient water is not supplied, an erroneous baking determination is made. Judgment can be prevented.

  Further, the abnormal value, the upper limit reference value, and the lower limit reference value described above may be optimal values based on the cooking menu, whereby steam can be supplied according to the cooking menu, and the cooking performance can be improved. Is.

  In the present embodiment, a sheathed heater is used as the heating means 27. However, a glass tube heater, a plate heater, or the like can be used instead of the sheathed heater.

  As shown in FIGS. 3 and 9, the water supply channel 29 includes a proximal end piping portion 29a that is branched and connected to the connection port 22b of the water storage tank 21 in two systems, and each heating means 27 from the proximal end piping portion 29a. A horizontal piping portion 29b routed under the bottom plate 4 of the heating chamber 3 so as to pass through the heating zone, and a vertical piping portion 29c rising vertically from the front end of the horizontal piping portion 29b to the side of the heating chamber 3; The upper piping portion 29d extending from the upper end of the vertical piping portion 29c to the upper side of each water supply tray 25 and dropping the water pumped from the vertical piping portion 29c onto the water supply tray 25, and the tip of each upper piping portion 29d The water outlet 29e is formed.

  As shown in FIG. 3, the horizontal piping portion 29 b is piped so as to contact the assembly block 27 a of the heating means 27, and the contact portion 30 with the assembly block 27 a shown in FIG. 9 is heated by the heating means 27. It becomes an area.

  Therefore, the characteristic configuration in the two systems in the steam supply mechanism 7 described above indicates that the lengths of the pipelines from the respective contact portions 0 to the respective water outlets 29e are set at equal distances.

  In this embodiment, the horizontal pipes 29b of the respective water supply channels 29 are set in the heating area by the heating means 27 as described above, and each horizontal pipe that is thermally expanded by receiving heat conduction from the heat generated by each heating means 27. The water in the part 29b is supplied to each water supply tray 25.

The state of steam generation will be described in more detail. When each of the heating means 27 generates heat in a state where the water storage tank 21 is inserted into the tank storage portion 35 and the horizontal piping portion 29b is filled with water, it comes into contact with the assembly block 27a. Heat is supplied to the water in the pipe at the section 30 to expand the water. Since the check valve 47 temporarily stops the pressure of water in the expanding pipe, the pressure is directed only in the direction of the vertical pipe portion 29c. Then, the expanded water is dropped from the water blow-out port 29e through the upper pipe portion 29d, so that that will be supplied to the water supply pan 25.

  At this time, since the distance from the contact part 30 of each water supply channel 29 to the assembly block 27a to each water outlet 29e is set to be equal, each horizontal pipe part 29b has heating means of the same specification. 27 can be applied, and the same amount of heat can be applied from the contact portion 30, whereby water can be evenly supplied to the respective water supply trays 25.

  Moreover, if the distance from the contact part 30 to each water outlet 29e is set to equal distance, the temperature of each water supply channel 29 and the contact part 30 can be made the same, and it becomes easy to control steam generation.

  Since the water supplied to the water supply tray 25 is in a state of being heated by the heat generated by each heating means 27, the time required from when it is supplied to the water supply tray 25 to the generation of steam can be shortened, and rapid steam is supplied. Heating becomes possible.

  If the heating is interrupted, the water in the vertical piping portion 29c in each water supply channel 29 will not expand and cannot reach the air intake port 29f, and atmospheric pressure enters the pipe from the air intake port 29f and the water supply is stopped. .

As shown in FIG. 8 (a), the proximal end piping portion 29a is connected to the proximal end circular tube portion 43 into which the connection port 22b of the container body 22 is fitted when the water storage tank 22 is removed. both the tube side of the water stop valve 45 for preventing water leakage from is equipped on the connecting portion between the horizontal pipe portion 29b, the horizontal pipe portion 29b side due to thermal expansion of the water in the horizontal pipe portion 29b Is provided with a check valve 47 for preventing reverse flow (flow in the direction of arrow (d) in the figure).

  The tank side water stop valve 33 and the pipe side water stop valve 45 have the springs 33b and 45b urging the valve bodies 33a and 45a in opposite directions, respectively, and the connection port 22b of the container body 22 is connected to the base end circular tube. When properly fitted to the portion 43, as shown in FIG. 8 (b), the tip portions of the valve bodies 33a and 45a abut against each other, and the opponent resists the biasing force of the springs 33b and 45b. Displace it so that the flow path is open.

  An O-ring 49 as a sealing material that closes the gap between the base end circular pipe portion 43 and the base end circular pipe portion 43 is provided on the outer peripheral portion of the connection port 22 b of the container body 22.

  The state shown in FIG. 8A is a state in which the connection port 22b of the container main body 22 is not fitted to the proximal end circular pipe portion 43, and still has a tank side water stop valve 33 and a pipe side water stop valve 45. Both are in the state which closed the flow path.

  In a state where the connection port 22b of the container body 22 is disengaged from the proximal end circular pipe portion 43, the water supply channel 29 side is sealed with a water stop valve 45 on the tube side, and the reverse flow of water in the water supply channel 29 is prevented. It is surely prevented. That is, as shown in FIG. 3, when the water storage tank 21 is inserted into the tank housing portion 35, water flows into the vertical piping portion 29 c of each water supply channel 29 to the same water level as the water storage tank 21. Even if the water storage tank 21 is withdrawn under such water pressure, the reverse flow of water can be prevented by the water stop valve 45 on the pipe side.

  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 extracted from the tank storage portion 35 is present at the bottom on the back side of the tank storage portion 35. The recessed part 51 which receives dripping is equipped, and this recessed part 51 is equipped with the water absorption sheet | seat 53 which absorbs the dripped water. As the water absorbing sheet 53, for example, a nonwoven fabric having excellent water absorption is used.

  As shown in FIGS. 3 and 4, the upper end of the vertical piping portion 29 c to which the upper piping portion 29 d is connected is set to a position higher than the maximum water level position Hmax in the water storage tank 21. This is to prevent the water storage on the water storage tank 21 side from flowing out to the upper piping portion 29d side carelessly and continuously due to the communication pipe action.

  Further, the water supply passage 29 is connected to the water storage tank 21 via the proximal end piping portion 29a at a position further lower than the minimum water storage level Hmin in the water storage tank 21.

  This is because the water stored in the water storage tank 21 can be taken into the water supply channel 29 side without remaining.

  In the high-frequency heating device 100 with a steam generation function described above, the water supply path 29 is routed so as to pass through the heating area of the heating means 27, and the heat of the water in the water supply path 29 due to the heat generated by the heating means 27. A pump function is obtained by expansion, and a dedicated pump means for supplying water from the water storage tank 21 to the water supply tray 25 is unnecessary.

  Therefore, simplification and downsizing of the structure of the steam supply mechanism 7 can be realized by omitting the dedicated pump means.

  Further, since the water supply to the water supply tray 25 is performed by the heat generated by the heating means 27, the supply amount of the steam can be realized only by controlling the heat generation operation of the heating means 27, and the dedicated pump means Compared with the conventional one that had to be controlled, it is possible to simplify the control process required for the steam supply amount control.

  Furthermore, since the water supplied to the water supply tray 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 25 to the generation of steam can be shortened quickly. Steam heating is possible.

In the above configuration, when the remaining amount of the water storage tank 21 becomes 0 (zero) and the remaining water amount on the water supply tray 25 decreases, the amount of heat consumed for water evaporation decreases, so the heating means 27 and the water supply tray A temperature increase of 25 itself occurs.

  However, since the steam supply mechanism 7 of the present embodiment includes the thermistor 41 that detects the temperature of the heating means 27, monitoring the detection signal of the thermistor 41 makes it relatively easy for the water storage tank 21 to It is possible to detect the remaining amount 0, and it is possible to prevent inconvenience such as emptying.

  Further, by using the detection signal of the thermistor, for example, when the remaining amount of the water storage tank 21 is detected, various controls such as stopping the operation of the heating means 27 and issuing a water supply alarm are possible. The handleability of the heating device 100 can be improved.

As described above, the high-frequency heating apparatus with a steam generation function according to the present invention can appropriately supply steam with a simple configuration and can detect the empty baking of the water supply tray. Useful as a cooker.

1 is an external perspective view of a high-frequency heating device with a steam generation function according to a first embodiment of the present invention. Schematic configuration diagram when the heating chamber is viewed from the front with the open / close door of the heating chamber of the high-frequency heating device with a steam generating function shown in FIG. Schematic configuration diagram of a steam supply mechanism in the high-frequency heating device with a steam generating function shown in FIG. Schematic configuration diagram of the steam supply mechanism when there is one water supply tray (A) Explanatory drawing of the mounting state of the water storage tank in the attaching / detaching operation of the water storage tank in the high frequency heating apparatus with a steam generating function shown in FIG. 1 (b) Description of the state where the tank insertion port is exposed in the same embodiment. Drawing (c) Explanatory drawing of the extraction state of a water storage tank in the embodiment Enlarged perspective view of a water storage tank used in the steam supply mechanism shown in FIG. Explanatory drawing of the attachment structure in the apparatus side surface of the steam supply mechanism shown in FIG. Explanatory drawing of the backflow prevention structure in the connection part of the water storage tank shown in FIG. 6 and the base end part of a water supply channel FIG. 6 is an explanatory view of a configuration in which the water supply path is heated by heating means arranged at the bottom of the apparatus, as viewed from the arrow A in FIG. Explanatory drawing explaining evaporation amount control and abnormality detection system 1 by a thermistor Explanatory drawing explaining evaporation amount control and abnormality detection method 2 by a thermistor Explanatory drawing explaining evaporation amount control by thermistor and prevention of erroneous detection of abnormality detection

Explanation of symbols

3 heating chamber 4 bottom plate 5 high frequency generating means 7 the steam supply mechanism 13 opening and closing door 15 partition wall 17 stirrer blade 21 water storage tank 22 the container body 22b connecting port 23 lid 25 water receiving tray 27 heating unit 27a assembled block 29 water supply path 29a group End piping section 29b Horizontal piping section 29c Vertical piping section 29d Upper piping section 33 Water stop valve on tank side 35 Tank storage section 36 Tank insertion port 41 Thermistor (temperature detection sensor)
45 Stop valve on the pipe side 47 Check valve

Claims (6)

A high-frequency generating means for outputting a high frequency into a heating chamber that accommodates an object to be heated, and a steam supply mechanism that supplies heating steam into the heating chamber, and at least one of the high frequency and the heating steam is supplied to the heating chamber. A high-frequency heating apparatus with a steam generating function for heat-treating the object to be heated, wherein the steam supply mechanism heats a water storage tank, a water supply tray, and the water supply tray that are detachably attached to the apparatus body. It said heating means for evaporating the water pan of water, and a water supply passage leading to the water supply pan by thermal expansion by the heat conduction through the heating zone the water in the water storage tank by the heating means, wherein steam supply mechanism, a temperature detecting means for detecting the temperature of the heating means or the water supply pan provided, energizing or control of interruption of the heating means based on the detected temperature or the water supply High frequency heating apparatus with steam generation function for performing multi-address. The high-frequency heating apparatus with a steam generating function according to claim 1, wherein the water supply tray is provided in the heating chamber, and the temperature detecting means is provided on the heating means or the back surface of the water supply tray. The high-frequency heating apparatus with a steam generation function according to claim 1 or 2, wherein the water storage tank is disposed at a position higher than the heating area of the water supply channel. The steam supply mechanism is configured such that the detected temperature level detected by the temperature detecting means rises to a predetermined abnormal value that is higher than an upper limit reference value, and the lower limit reference even if a predetermined time elapses after the abnormal value is exceeded. The high frequency heating apparatus with a steam generation function according to any one of claims 1 to 3, wherein when the value does not fall below the value, the remaining amount of water in the water storage tank is determined to be zero. In the steam supply mechanism, the detected temperature level detected by the temperature detecting means rises to a predetermined abnormal value higher than an upper limit reference value, and the detected temperature level decreases within a predetermined time from when the abnormal value is exceeded. The high-frequency heating device with a steam generation function according to any one of claims 1 to 3, wherein the water storage tank is considered to have water. The high-frequency heating apparatus with a steam generating function according to any one of claims 1 to 5, wherein the abnormal value, the upper limit reference value, and the lower limit reference value are set to optimum values by the cooking menu.

Images