WO2010119862A1 - 加熱調理器 - Google Patents
加熱調理器 Download PDFInfo
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- WO2010119862A1 WO2010119862A1 PCT/JP2010/056583 JP2010056583W WO2010119862A1 WO 2010119862 A1 WO2010119862 A1 WO 2010119862A1 JP 2010056583 W JP2010056583 W JP 2010056583W WO 2010119862 A1 WO2010119862 A1 WO 2010119862A1
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- WIPO (PCT)
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- steam
- water
- steam generation
- heater
- exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
- F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
- F24C15/327—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation with air moisturising
Definitions
- This invention relates to a cooking device.
- a heating cooker there is one that heats water supplied from a water tank by a steam generator to generate water vapor, and supplies the generated water vapor to a heating chamber (for example, JP 2009-41822 A). Publication (refer patent document 1)).
- the heating cooker includes a water level sensor in which a plurality of electrodes having different lengths are combined, and by detecting which of the detection electrodes of the water level sensor is immersed in water, the water tank The inside water level is detected, and when none of the detection electrodes is immersed in water, it is regarded as waterless.
- the above-described cooking device has a problem that the configuration of the water level sensor is complicated and the cost becomes high.
- the main body size is increased.
- the water tank is reduced by the space for the water level sensor. The capacity of will become smaller.
- an object of the present invention is to provide a cooking device capable of detecting the stop of the steam generation function including the absence of water in the water tank with a simple configuration without a water level sensor and reducing the cost.
- the heating cooker of the present invention is: A body casing; A water tank disposed in the main body casing; A steam generator that generates water vapor by heating water supplied from the water tank; A heating chamber to which water vapor from the steam generator is supplied; In the cooking in which the steam from the steam generator is supplied into the heating chamber, the steam generating function including the absence of water in the water tank is based on information relating to a physical quantity that correlates with the presence or absence of water in the steam generator.
- a steam generation function determination unit that determines whether or not to stop is provided.
- the steam generating function determining unit determines whether the water in the water tank is based on information on a physical quantity that indirectly indicates the presence or absence of water in the steam generating device. It is determined whether or not the steam generation function including no water is stopped.
- the information on the physical quantity that indirectly represents the presence or absence of water in the steam generator is information on the temperature of the steam generator container of the steam generator and the atmosphere in the exhaust passage exhaust passage provided in the main body casing. Information on exhaust temperature (or exhaust humidity).
- the heating cooker of one embodiment is The steam generation device has a steam generation container to which water is supplied from the water tank, and a steam generation heater for heating water in the steam generation container, A steam generation container temperature sensor for detecting the temperature of the steam generation container; In cooking in which steam from the steam generator is supplied into the heating chamber, the steam generating heater is repeatedly turned on and off based on the temperature of the steam generating container detected by the steam generating container temperature sensor.
- a steam generating heater control unit for controlling the generating heater Information on the physical quantity that indirectly represents the presence or absence of water in the steam generator includes at least a ratio of an off time to an on time in an on / off operation of the steam generating heater,
- the steam generation function determination unit is configured such that when the ratio of the off time to the on time in the on / off operation of the steam generation heater is greater than a predetermined value, It is determined that the steam generation function including no water in the water tank is stopped.
- the steam generating heater control unit in the cooking in which the steam from the steam generating device is supplied into the heating chamber, the steam generating heater control unit generates steam based on the temperature of the steam generating container detected by the steam generating container temperature sensor.
- the steam generating heater is controlled so that the heater is repeatedly turned on and off.
- the temperature of the steam generation container is set within the target temperature range. If the water in the water tank runs out or a steam generator failure (heater failure, pump failure, etc.) occurs, water is not supplied to the steam generation container, and the on-time of the steam generator heater is turned on and off.
- the steam generation function determination unit determines that the steam generation function including the absence of water in the water tank is stopped. To do. Thereby, the stop of the steam generation function including the absence of water in the water tank can be easily detected with a simple configuration.
- the heating cooker of one embodiment is An exhaust passage which is provided in the main body casing and exhausts from the heating chamber to the outside of the main body casing; An exhaust passage sensor for detecting the exhaust temperature or the exhaust humidity of the atmosphere in the exhaust passage,
- the physical quantity that indirectly represents the presence or absence of water in the steam generator includes at least the exhaust temperature or the exhaust humidity of the atmosphere in the exhaust passage,
- the steam generation function determination unit is configured to determine whether the steam generation function determination unit is in the water tank based on the exhaust temperature or the exhaust humidity detected by the exhaust passage sensor. It is determined whether or not the steam generation function including no water is stopped.
- the steam from the steam generator is continuously supplied to the heating chamber via the exhaust passage provided in the main body casing.
- the atmosphere containing water vapor is gradually discharged from the heating chamber to the outside of the main casing.
- the steam generator stops generating steam the steam is no longer supplied to the heating chamber and the exhaust is exhausted. Since there is almost no exhaust through the passage, the fluctuation of the exhaust temperature (or exhaust humidity) of the atmosphere in the exhaust passage is reduced.
- the steam generation function determination unit is based on the exhaust temperature (or exhaust humidity) detected by the exhaust passage sensor, which is a physical quantity that indirectly represents the presence or absence of water in the steam generator. It is determined whether or not the steam generation function including the absence of water in the water tank is stopped. Thereby, the stop of the steam generation function including the absence of water in the water tank can be easily detected with a simple configuration.
- the steam generator has a steam generator heater for heating water from the water tank, A steam generation heater control unit for controlling the steam generation heater;
- the steam generating heater control unit turns on and off the steam generating heater in cooking in which steam from the steam generating device is supplied into the heating chamber,
- the steam generation function determination unit determines whether there is no water in the water tank when the exhaust temperature or the exhaust humidity detected by the exhaust passage sensor does not fluctuate. It is determined that the steam generation function including is stopped.
- the steam generation function judgment unit turns on the steam generation heater.
- the exhaust temperature (or exhaust humidity) detected by the exhaust passage sensor does not fluctuate in the higher direction, it can be determined that the steam generation function including the absence of water in the water tank is stopped.
- the stop of the steam generation function including the absence of water in the water tank can be reliably detected by using the characteristics of the exhaust temperature (or exhaust humidity) of the atmosphere in the exhaust passage in conjunction with the turning on of the steam generation heater.
- the steam generation heater control unit repeatedly turns on and off the steam generation heater in cooking in which steam from the steam generation device is supplied into the heating chamber
- the steam generation function determination unit is configured to switch water in the water tank when the exhaust temperature or the exhaust humidity detected by the exhaust passage sensor does not periodically fluctuate depending on whether the steam generation heater is on or off. It is determined that the steam generation function including nothing is stopped.
- the inside of the exhaust passage is changed according to the on / off of the steam generating heater.
- the exhaust temperature (or exhaust humidity) of the atmosphere periodically fluctuates between high and low. Therefore, when water in the water tank is exhausted or when steam generation by the steam generator stops due to a failure of the steam generator (heater failure, pump failure, etc.), the exhaust passage sensor is turned on and off according to the on / off status of the steam generator heater.
- the steam generation function determination unit can determine that the steam generation function including the absence of water in the water tank is stopped. Become. The stop of the steam generation function including the absence of water in the water tank can be detected more reliably by utilizing the characteristics of the exhaust temperature (or exhaust humidity) of the atmosphere in the exhaust passage linked with the on / off of the steam generation heater.
- the stop of the steam generation function including the absence of water in the water tank includes a failure of the steam generation heater of the steam generation device.
- Stopping the steam generation function including the absence of water in the water tank includes a failure of a pump for supplying water from the water tank to the steam generator.
- a heater for heating the heating chamber includes information on a physical quantity that indirectly represents the presence or absence of water in the steam generation apparatus in cooking in which the heating chamber to which the steam from the steam generation apparatus is supplied is heated by the heater. Based on this, it is determined whether or not the steam generation function including the absence of water in the water tank is stopped.
- the steam generation function determination unit is a physical quantity that indirectly represents the presence or absence of water in the steam generator. Based on the information regarding this, it can be determined whether or not the steam generation function including the absence of water in the water tank is stopped.
- the heating cooker of the present invention it is possible to detect the stop of the steam generation function including the absence of water in the water tank with a simple configuration without a water level sensor, and realize a heating cooker that can reduce the cost. can do.
- FIG. 1A is a schematic cross-sectional view seen from the front of the heating cooker according to the first embodiment of the present invention.
- FIG. 1B is an enlarged view of the steam generator of the cooking device.
- FIG. 2 is a schematic cross-sectional view seen from the side of the cooking device.
- FIG. 3 is a control block diagram of the cooking device.
- FIG. 4 is a diagram showing changes in the internal temperature and the exhaust temperature according to on / off of the steam generating heater during oven cooking using the superheated steam of the heating cooker.
- FIG. 5 is a diagram showing changes in the internal temperature and the exhaust temperature according to the on / off of the steam generating heater during steam cooking using steam of the heating cooker.
- FIG. 1A is a schematic cross-sectional view seen from the front of the heating cooker according to the first embodiment of the present invention.
- FIG. 1B is an enlarged view of the steam generator of the cooking device.
- FIG. 2 is a schematic cross-sectional view seen from the side of the cooking device.
- FIG. 6 is a diagram showing a change in the number of output bits of the exhaust humidity sensor in accordance with on / off of the steam generating heater during oven cooking using the superheated steam of the heating cooker according to the second embodiment of the present invention.
- FIG. 7 is a diagram showing a change in the number of output bits of the exhaust humidity sensor according to on / off of the steam generating heater during steam cooking using steam of the heating cooker.
- FIG. 8 is a diagram showing changes in the on-time and off-time of the steam generating heater during steam cooking using steam in the heating cooker according to the third embodiment of the present invention.
- FIG. 9 is a diagram showing data of a specific example of the on time and the off time of the steam generating heater during steam cooking using steam of the heating cooker.
- FIG. 1A shows a schematic sectional view seen from the front of the heating cooker according to the first embodiment of the present invention.
- this heating cooker is provided with a rectangular parallelepiped heating chamber 20 in a rectangular parallelepiped main body casing 10.
- the heating chamber 20 has an opening on the front side, and a heat shield 14 made of stainless steel is provided on the side, bottom and top surfaces of the heating chamber 20.
- a heat insulating material (not shown) is arranged around the heating chamber 20 and inside the door 11 (shown in FIG. 2), and the inside of the heating chamber 20 and the outside are insulated.
- a stainless steel square dish 21 is installed in the heating chamber 20, and a stainless steel wire grill net 22 for placing the article to be heated 90 is installed on the square dish 21.
- the upper side plate tray receiving portions 23, 24 and the lower side plate tray receivers 25, 26 having a two-stage upper and lower structure are provided on the inner sides of both sides in the heating chamber 20.
- the square plate 21 is received by the upper square plate receiving portions 23 and 24.
- the heating cooker evaporates water supplied from the water tank 30 from the water tank 30, the pump 31, and the pump 31 in the main body casing 10 and on the right side of the heating chamber 20.
- a steam generator 40 that generates steam.
- a connecting portion 30b (shown in FIG. 2) provided on the lower side of the water tank 30 can be connected to a receiving port 32a (shown in FIG. 2) provided at one end of the first water supply pipe 32. .
- the other end of the first water supply pipe 32 is connected to one end of the pump 31.
- the other end of the pump 31 is connected to one end of the second water supply pipe 33, and the other end of the second water supply pipe 33 is connected to the steam generator 40.
- a circular suction part 20a is provided in the center of the rear surface of the heating chamber 20, and an upper left blowing part 20b and an upper right blowing part 20c are provided in the vicinity of the left and right corners on the upper rear surface of the heating chamber 20.
- a left middle blowing portion 20d and a right middle blowing portion 20e are provided on the left and right of the suction portion 20a on the rear surface of the heating chamber 20, and a lower upper blowing portion 20f and a lower upper blowing portion are disposed in the vicinity of the left and right corners on the lower rear side of the heating chamber 20.
- 20 g is provided.
- An internal temperature sensor 76 that detects the temperature of the atmosphere in the heating chamber 20 is disposed on the upper right side of the heating chamber 20.
- a soup bowl 34 is arranged below the water tank 30.
- an electrical component part 50, a cooling fan 53, and a cooling fan motor 54 that drives the cooling fan 53 are disposed below the heating chamber 20 in the main body casing 10.
- the cooling fan 53 cools the electrical component part 50 and the like in the main body casing 10 by air sucked from the opening 62 on the bottom side.
- an air supply fan 55 for supplying air from the outside into the heating chamber 20 through the air inlet 57 is disposed on the right side of the heating chamber 20 in the main body casing 10.
- a rotating antenna 51 and a rotating antenna motor 52 for driving the rotating antenna 51 are arranged in the lower part of the heating chamber 20.
- the microwave generated in the magnetron 61 (shown in FIG. 2) is guided to the lower center of the heating chamber 20 by the waveguide 60 and is rotated by the rotating antenna 51 driven by the rotating antenna motor 52 while being heated.
- the object to be heated 90 is heated by being radiated upward in the interior 20.
- FIG. 1B shows an enlarged view of the steam generator 40 of the heating cooker.
- the steam generator 40 includes a steam generation box 41 as an example of a steam generation container having one end of the second water supply pipe 33 connected to the lower side, and a steam generation heater 42 disposed on the lower side in the steam generation box 41.
- a steam temperature raising heater 43 disposed on the upper side in the steam generation box 41; a steam temperature raising portion 45 provided in the steam generation box 41 and surrounding the steam temperature raising heater 43;
- One end is connected to the lower side of the warm part 45, and the steam outlet 44 at the other end has a plurality of steam pipes 46 opened into the heating chamber 20.
- a steam generation box temperature sensor 47 as an example of a steam generation container temperature sensor for detecting the temperature of the steam generation box 41 is disposed in the vicinity of the steam generation heater 42 of the steam generation box 41.
- an exhaust duct 72 as an example of an exhaust passage is connected to an exhaust port 71 (shown in FIG. 2) provided on the right side surface of the heating chamber 20.
- An external exhaust port 73 is provided at the other end.
- An exhaust temperature sensor 74 as an example of an exhaust passage sensor in the exhaust duct 72 is arranged, and an exhaust humidity sensor as an example of an exhaust passage sensor on the heating chamber 20 side of the exhaust temperature sensor 74 in the exhaust duct 72. 75 is arranged.
- FIG. 2 is a schematic cross-sectional view as seen from the side of the heating cooker.
- the same reference numerals are assigned to the same components of the heating cooker shown in FIG. 1A.
- a door 11 that rotates about a lower end side is provided on the front surface of the main casing 10.
- a handle 12 is provided at the top of the door 11, and a heat-resistant glass window (not shown) is fitted into the door 11.
- a convection fan casing 80 is attached to the rear surface side of the heating chamber 20, and the convection fan 81 is disposed in the convection fan casing 80, and as an example of a heater so as to surround the convection fan 81.
- a convection heater 82 is disposed.
- the convection fan 81 is driven by a convection fan motor 83. Air in the heating chamber 20 is sucked by the convection fan 81 through the suction part 20a shown in FIG. 1A and heated by the convection heater 82, and then the upper left outlet part 20b, upper right outlet part 20c, middle left outlet shown in FIG. 1A. It blows out again into the heating chamber 20 from the part 20d, the right middle blowing part 20e, the lower upper blowing part 20f, and the lower upper blowing part 20g.
- a magnetron 61 is disposed at the lower portion of the heating chamber 20.
- the microwave generated by the magnetron 61 is guided to the lower center of the heating chamber 20 by the waveguide 60.
- FIG. 3 shows a control block diagram of the cooking device.
- the control device 100 includes a microcomputer, an input / output circuit, and the like, and is arranged in the electrical component section 50 shown in FIGS. 1A and 2.
- the control device 100 includes a steam generation function determination unit 100a that determines whether or not the steam generation function including the absence of water in the water tank 30 is stopped, a steam generation heater 42, a steam temperature raising heater 43, and a convection heater 82.
- a heater control unit 100b for controlling.
- the heater control unit 100b includes a steam generation heater control unit.
- the control device 100 includes a steam generating heater 42, a steam heating heater 43, a magnetron 61, a convection heater 82, a convection fan motor 83, a cooling fan motor 54, a rotating antenna motor 52, and an operation.
- the panel 13, the exhaust temperature sensor 74, the exhaust humidity sensor 75, the internal temperature sensor 76, the steam generation box temperature sensor 47, the pump 31, and the supply fan motor 56 are connected.
- the control device 100 detects the steam generation heater 42, the steam temperature increase heater 43, and the magnetron 61 based on detection signals from the exhaust temperature sensor 74, the exhaust humidity sensor 75, the internal temperature sensor 76, and the steam generation box temperature sensor 47.
- the convection heater 82, the convection fan motor 83, the cooling fan motor 54, the rotary antenna motor 52, the pump 31, and the air supply fan motor 56 are controlled in accordance with a predetermined program.
- the control device 100 detects whether or not the water tank 30 is normally attached by a water tank detection unit (not shown), and if the water tank 30 is normally attached, the pump 31. Start driving. Then, water is supplied from the water tank 30 into the steam generation box 41 of the steam generator 40 via the second water supply pipe 33 by the pump 31. Thereafter, when a predetermined amount of water is supplied into the steam generation box 41, the pump 31 is stopped to stop water supply.
- the steam generating heater 42 is energized, and a predetermined amount of water accumulated in the steam generating box 41 is heated by the steam generating heater 42.
- the convection fan motor 83 is driven by the convection fan motor 83, and The convection heater 82 is energized.
- the convection fan 81 sucks the gas (including steam) in the heating chamber 20 from the suction portion 20a, and sends the gas (including steam) heated by the convection heater 82 into the heating chamber 20.
- the superheated steam is sucked from the suction portion 20a by the convection fan 81 together with the air in the heating chamber 20, and is heated by the convection heater 82, and the upper left blow portion 20b, the upper right blow portion 20c, the left middle blow portion 20d, the right A convection that blows into the heating chamber 20 from the middle blowing portion 20e, the lower upper blowing portion 20f, and the lower upper blowing portion 20g and wraps the article 90 to be heated in the heating chamber 20 is formed.
- the convection steam is sequentially sucked into the suction part 20a and repeatedly circulated through the convection fan casing 80 and back into the heating chamber 20 again.
- the superheated steam can be efficiently collided with the superheated steam, and the heated object 90 is heated by the collision of the superheated steam.
- the superheated steam that has contacted the surface of the object to be heated 90 also heats the object to be heated 90 by releasing latent heat when dew condensation occurs on the surface of the object to be heated 90.
- a large amount of heat of the superheated steam can be reliably and promptly applied to the entire surface of the article 90 to be heated. Therefore, it is possible to realize heat cooking with no spots and good finish.
- the control device 100 displays a cooking end message on the operation panel 13, and further sounds a signal by a buzzer (not shown) provided on the operation panel 13.
- the microwave heating cooking is performed. Operation starts. Then, the control device 100 drives the magnetron 61 to supply the microwave to the object to be heated 90 via the waveguide 60 and the rotating antenna 51, thereby heating the object to be heated 90. In that case, a non-metal receiving tray through which the microwave on which the article to be heated 90 is placed is laid, for example, on the bottom plate of the heating chamber 20.
- FIG. 4 is a diagram showing changes in the internal temperature and the exhaust temperature according to the on / off of the steam generating heater 42 during oven cooking using the superheated steam of the heating cooker.
- the horizontal axis represents time (minutes), and the vertical axis represents temperature (° C.) and steam generation heater input (kW).
- the steam generating heater 42 is turned on for 10 seconds per minute for 15 minutes from the start. After 15 minutes, the system is turned on for 7 seconds per minute, and the steam generating heater 42 is repeatedly turned on and off.
- the internal temperature detected by the internal temperature sensor 76 and the exhaust temperature detected by the exhaust temperature sensor 74 gradually increase to near 250 ° C.
- the internal temperature and the exhaust temperature are turned on. Fluctuates in a higher direction, and when the steam generating heater 42 is turned off, the internal temperature and the exhaust temperature fluctuate in a lower direction. That is, the internal temperature and the exhaust gas temperature periodically fluctuate depending on whether the steam generating heater 42 is turned on or off.
- FIG. 5 is a diagram showing changes in the internal temperature and the exhaust temperature according to the on / off of the steam generating heater during steam cooking using steam of the heating cooker.
- the horizontal axis represents time (minutes), and the vertical axis represents temperature (° C.) and steam generation heater input (kW).
- the steam generating heater 42 is continuously turned on for 4 minutes from the start, and is turned on for 80 seconds per minute after 4 minutes and after 15 minutes, After 15 minutes, it is turned on for 40 seconds per minute, and the steam generating heater 42 is repeatedly turned on and off.
- the internal temperature detected by the internal temperature sensor 76 and the exhaust temperature detected by the exhaust temperature sensor 74 rise to near 100 ° C. in several seconds, and when the steam generating heater 42 is turned on, the internal temperature and the exhaust temperature. Fluctuates in a higher direction, and when the steam generating heater 42 is turned off, the internal temperature and the exhaust temperature fluctuate in a lower direction. That is, the internal temperature and the exhaust gas temperature periodically fluctuate depending on whether the steam generating heater 42 is turned on or off.
- the internal temperature sensor 76 detects it as shown in FIG. Both the internal temperature and the exhaust temperature detected by the exhaust temperature sensor 74 have almost no periodic fluctuations.
- the steam from the steam generating device 40 enters the heating chamber 20. Supplied.
- the steam containing the steam from the steam generating device 40 is continuously supplied to the heating chamber 20, so that the atmosphere containing the steam gradually from the heating chamber 20 through the exhaust duct 72 provided in the main body casing 10. It is exhausted to the outside of the casing 10.
- the steam generation function determination unit 100a determines whether or not the steam generation function including the absence of water in the water tank 30 is stopped based on the exhaust temperature detected by the exhaust temperature sensor 74.
- the stop of the steam generation function including the absence of water in the water tank 30 can be detected with a simple configuration without a water level sensor, and the cost can be reduced. Further, the stop of the steam generation function due to factors other than the absence of water in the water tank 30 (heater failure, pump failure, etc.) can also be detected.
- the water in the water tank 30 disappears or the steam generator 40 fails (the steam generator heater 42 fails).
- the exhaust temperature detected by the exhaust temperature sensor 74 is periodically increased or decreased even if the steam generation heater 42 is turned on / off by the heater control unit 100b.
- the steam generation function determination unit 100a determines that the steam generation function including the absence of water in the water tank 30 is stopped. The stop of the steam generation function including the absence of water in the water tank 30 can be detected more reliably by utilizing the characteristics of the exhaust temperature of the atmosphere in the exhaust duct 72 interlocked with the on / off of the steam generation heater 42.
- the steam generating function determination When the exhaust gas temperature detected by the exhaust gas temperature sensor 74 does not fluctuate according to the steam generator heater 42 being turned on by the unit 100a, the steam generation function including the absence of water in the water tank 30 is stopped. It is also possible to determine. Also in this case, it is possible to reliably detect the stop of the steam generation function including the absence of water in the water tank 30 by utilizing the exhaust temperature characteristic of the atmosphere in the exhaust duct 72 that is interlocked with the ON of the steam generation heater 42. it can.
- the stop of the steam generation function can be detected even when the steam generation by the steam generation device 40 stops due to the failure of the steam generation heater 42 of the steam generation device 40. Further, when the generation of water vapor by the steam generator 40 is stopped due to a failure of the pump 31 for supplying water from the water tank 30 to the steam generator 40, it is possible to detect the stop of the steam generation function.
- the steam generation function determination unit 100a can determine whether the steam generation function including the absence of water in the water tank 30 is stopped based on the exhaust temperature detected by the exhaust temperature sensor 74.
- FIG. 6 is a diagram showing a change in the number of output bits of the exhaust humidity sensor 75 according to on / off of the steam generating heater 42 during oven cooking using superheated steam of the heating cooker according to the second embodiment of the present invention.
- the cooking device of the second embodiment has the same configuration as the cooking device of the first embodiment except for the operation of the control device 100, and uses FIGS. 1A, 1A, and 2.
- the horizontal axis represents time (minutes), and the vertical axis represents the number of output bits of the exhaust humidity sensor 75.
- the number of output bits of the exhaust humidity sensor 75 when the number of output bits of the exhaust humidity sensor 75 is zero, it indicates the absolute humidity at the indoor air level. As the number of bits increases, the moisture in the exhaust increases and the absolute humidity increases. Represents that
- the exhaust humidity detected by the exhaust humidity sensor 75 gradually increases.
- the steam generating heater 42 is turned on, the exhaust humidity is increased.
- the steam generating heater 42 is turned off, the exhaust humidity is decreased. Fluctuates towards. That is, according to the on / off of the steam generating heater 42, the exhaust humidity periodically varies between high and low.
- FIG. 7 is a diagram showing a change in the number of output bits of the exhaust humidity sensor 75 in accordance with on / off of the steam generating heater during steam cooking using steam of the heating cooker.
- the steam generating heater 42 is continuously turned on for 4 minutes from the start, turned on for 50 seconds per minute from 4 minutes to 15 minutes, and after 15 minutes.
- the steam generation heater 42 is repeatedly turned on and off at 40 seconds per minute.
- the exhaust humidity detected by the exhaust humidity sensor 75 gradually increases.
- the steam generating heater 42 is turned on, the exhaust humidity is increased.
- the steam generating heater 42 is turned off, the exhaust humidity is decreased. Fluctuates towards. That is, according to the on / off of the steam generating heater 42, the exhaust humidity periodically varies between high and low.
- the steam generation function determination unit 100a is based on the exhaust humidity detected by the exhaust humidity sensor 75, which is a physical quantity correlated with the presence or absence of water in the steam generation box 41. It is determined whether or not the steam generation function including no water is stopped. Therefore, the stop of the steam generation function including the absence of water in the water tank 30 can be detected with a simple configuration without a water level sensor, and the cost can be reduced. Further, the stop of the steam generation function due to factors other than the absence of water in the water tank 30 (heater failure, pump failure, etc.) can also be detected.
- the steam generation heater 42 when the water in the water tank 30 is exhausted or the steam generator 40 stops generating steam due to a failure of the steam generator 40 (failure of the steam generator heater 42, failure of the pump 31, etc.). Even if the steam generation heater 42 is turned on / off by the heater control unit 100b, the exhaust humidity detected by the exhaust humidity sensor 75 does not periodically fluctuate between high and low, so that the water in the water tank 30 is detected by the steam generation function determination unit 100a. It is determined that the steam generation function including nothing is stopped. The stop of the steam generation function including the absence of water in the water tank 30 can be detected more reliably by utilizing the exhaust humidity characteristic of the atmosphere in the exhaust duct 72 that is linked to the on / off of the steam generation heater 42.
- the steam generation function determination unit 100a stops the steam generation function including the absence of water in the water tank 30. It is also possible to determine. Also in this case, it is possible to reliably detect the stop of the steam generation function including the absence of water in the water tank 30 by utilizing the exhaust humidity characteristic of the atmosphere in the exhaust duct 72 that is interlocked with the ON of the steam generation heater 42. it can.
- the stop of the steam generation function can be detected. Further, when the generation of water vapor by the steam generator 40 is stopped due to a failure of the pump 31 for supplying water from the water tank 30 to the steam generator 40, it is possible to detect the stop of the steam generation function.
- the steam generation function determination part 100a also in the oven cooking which heats the inside of the heating chamber 20 to which the water vapor
- a cooking device according to a third embodiment of the present invention will be described below.
- the cooking device of the third embodiment has the same configuration as that of the cooking device of the first embodiment except for the operation of the control device 100, and uses FIGS. 1A, 1A, and 2.
- the temperature of the steam generation box 41 detected by the steam generation box temperature sensor 47 by the heater control unit 100b of the control device 100 is the upper limit temperature (for example, 120).
- the steam generating heater 42 is turned off.
- the temperature of the steam generating box 41 falls below the lower limit temperature (for example, 105 ° C.) from the state where the steam generating heater 42 is turned off, the steam generating heater 42 is turned on.
- the upper limit temperature and the lower limit temperature may be appropriately set according to the configuration of the steam generator.
- the heating cooker is a first operation mode in which the steam generating heater 42 is operated by temperature control based on the temperature of the steam generation box 41 described above for a predetermined time (for example, 15 minutes) from the start of steam cooking using steam.
- a second operation mode for controlling the heater output by alternately repeating the on period and the off period of the steam generating heater 42 at a duty ratio corresponding to a desired heater output after the predetermined time has elapsed.
- the steam generation heater 42 is operated by temperature control based on the temperature of the steam generation box 41 described above during the ON-enabled period.
- the pump 31 performs continuous operation, while in the second operation mode, the pump 31 operates only during the on-time period.
- the steam generation function determination unit 100a of the control device 100 measures the on time and the subsequent off time of the steam generation heater 42 after the start of operation, and whether or not on time> off time. Determine whether. That is, it is determined whether or not the ratio of the off time to the on time exceeds 1.
- the control device 100 causes the “WATER” message to blink on the operation panel 13. However, even if the pump 31 is operated, water may not be immediately supplied into the steam generation box 41, so the first determination of the on time and the off time is ignored.
- the steam generation function determination unit 100a determines that there is no water, and the heater control unit 100b of the control device 100 performs heating by the steam generation heater 42. Stop.
- the number of determinations is not limited to five, and a changeable set value stored in an EEPROM (electrically erasable / writable read-only memory) or the like may be used.
- heating by the steam generating heater 42 is continued without measuring and judging the on time and the off time.
- FIG. 8 shows changes in the on-time and off-time of the steam generating heater 42 during steam cooking using steam of the heating cooker.
- FIG. 9 shows data of a specific example of the on time and off time of the steam generating heater 42 during steam cooking using the steam of the heating cooker.
- the control device 100 causes the “WATER” message to blink on the operation panel 13.
- the relationship of on time> off time continues twice in the second and third on / off operations, and the message “WATER” is flashed on the operation panel 13 by the control device 100. The Then, in the second to sixth on / off operations, the relationship of on time> off time continues five times continuously. Therefore, the steam generation function determining unit 100a determines that there is no water, and the heater control unit of the control device 100 100b stops heating by the steam generating heater 42.
- the temperature of the steam generation box 41 is warmed higher than in (2) of FIG. 9, but since there is water in the steam generation box 41, the first on time of the on / off operation is turned on. Is longer than the first on time in (2) of FIG. 9 (on time 37 seconds in (2)> on time 49 seconds in (3)).
- the relationship of on time> off time continues continuously twice, and the control device 100 causes the “WATER” message to blink on the operation panel 13. Then, in the second to sixth on / off operations, the relationship of on time> off time continues five times continuously. Therefore, the steam generation function determining unit 100a determines that there is no water, and the heater control unit of the control device 100 100b stops heating by the steam generating heater 42.
- the steam generation function determination unit 100a indirectly determines the presence or absence of water in the steam generator 40. It is determined whether or not the steam generation function including the absence of water in the water tank 30 is stopped based on the information on the physical quantity expressed in (the ratio of the off time to the on time in the on / off operation of the steam generating heater 42).
- the stop of the steam generation function including the absence of water in the water tank 30 can be detected with a simple configuration, and the cost can be reduced. It is also possible to detect the stop of the steam generation function due to factors other than the absence of water in the water tank (heater failure, pump failure, etc.).
- the steam generation function determination unit 100a determines that the steam generation function including the absence of water in the water tank 30 is stopped. Thereby, the stop of the steam generation function including the absence of water in the water tank 30 can be easily detected with a simple configuration.
- the predetermined value for determining the ratio of the off time to the on time is set to “1”, but may be set as appropriate according to the configuration of the steam generator.
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Abstract
Description
本体ケーシングと、
上記本体ケーシング内に配置された水タンクと、
上記水タンクから供給された水を加熱して水蒸気を発生させる蒸気発生装置と、
上記蒸気発生装置からの水蒸気が供給される加熱室と、
上記蒸気発生装置からの水蒸気が上記加熱室内に供給される調理において、上記蒸気発生装置内の水の有無に相関する物理量に関する情報に基づいて、上記水タンク内の水無を含む蒸気発生機能の停止か否かを判定する蒸気発生機能判定部と
を備えたことを特徴とする。
上記蒸気発生装置は、上記水タンクから水が供給される蒸気発生容器と、上記蒸気発生容器内の水を加熱する蒸気発生ヒータとを有し、
上記蒸気発生容器の温度を検出する蒸気発生容器温度センサと、
上記蒸気発生装置からの水蒸気が上記加熱室内に供給される調理において、上記蒸気発生容器温度センサにより検出された上記蒸気発生容器の温度に基づいて、上記蒸気発生ヒータのオンオフを繰り返すように上記蒸気発生ヒータを制御する蒸気発生ヒータ制御部と
を備え、
上記蒸気発生装置内の水の有無を間接的に表す物理量に関する情報は、上記蒸気発生ヒータのオンオフ動作におけるオン時間に対するオフ時間の比を少なくとも含み、
上記蒸気発生機能判定部は、上記蒸気発生装置からの水蒸気が上記加熱室内に供給される調理において、上記蒸気発生ヒータのオンオフ動作におけるオン時間に対するオフ時間の比が所定値よりも大きいとき、上記水タンク内の水無を含む蒸気発生機能の停止であると判定する。
上記本体ケーシング内に設けられ、上記加熱室内から上記本体ケーシングの外部に排気するための排気通路と、
上記排気通路内の雰囲気の排気温度または排気湿度を検出する排気通路用センサと
を備え、
上記蒸気発生装置内の水の有無を間接的に表す物理量は、上記排気通路内の雰囲気の上記排気温度または上記排気湿度を少なくとも含み、
上記蒸気発生機能判定部は、上記蒸気発生装置からの水蒸気が上記加熱室内に供給される調理において、上記排気通路用センサにより検出された上記排気温度または上記排気湿度に基づいて、上記水タンク内の水無を含む蒸気発生機能の停止か否かを判定する。
上記蒸気発生装置は、上記水タンクからの水を加熱する蒸気発生ヒータを有し、
上記蒸気発生ヒータを制御する蒸気発生ヒータ制御部を備え、
上記蒸気発生ヒータ制御部は、上記蒸気発生装置からの水蒸気が上記加熱室内に供給される調理において上記蒸気発生ヒータをオンオフし、
上記蒸気発生機能判定部は、上記蒸気発生ヒータのオンに応じて、上記排気通路用センサにより検出された上記排気温度または上記排気湿度が高くなる方に変動しないとき、上記水タンク内の水無を含む蒸気発生機能の停止であると判定する。
上記蒸気発生ヒータ制御部は、上記蒸気発生装置からの水蒸気が上記加熱室内に供給される調理において上記蒸気発生ヒータを繰り返しオンオフし、
上記蒸気発生機能判定部は、上記蒸気発生ヒータのオンオフに応じて、上記排気通路用センサにより検出された上記排気温度または上記排気湿度が高低に周期的に変動しないとき、上記水タンク内の水無を含む蒸気発生機能の停止であると判定する。
上記水タンク内の水無を含む蒸気発生機能の停止は、上記蒸気発生装置の上記蒸気発生ヒータの故障を含む。
上記水タンク内の水無を含む蒸気発生機能の停止は、上記水タンクからの水を上記蒸気発生装置に供給するためのポンプの故障を含む。
上記加熱室内を加熱する加熱ヒータを備え、
上記蒸気発生機能判定部は、上記蒸気発生装置からの水蒸気が供給された上記加熱室内を上記加熱ヒータにより加熱する調理において、上記蒸気発生装置内の水の有無を間接的に表す物理量に関する情報に基づいて、上記水タンク内の水無を含む蒸気発生機能の停止か否かを判定する。
図1Aはこの発明の第1実施形態の加熱調理器の正面から見た断面模式図を示している。
図6はこの発明の第2実施形態の加熱調理器の過熱水蒸気を用いたオーブン調理時の蒸気発生ヒータ42のオンオフに応じた排気湿度センサ75の出力ビット数の変化を示す図を示している。この第2実施形態の加熱調理器は、制御装置100の動作を除いて第1実施形態の加熱調理器と同一の構成をしており、図1A,図1A,図2を援用する。
この発明の第3実施形態の加熱調理器について以下に説明する。この第3実施形態の加熱調理器は、制御装置100の動作を除いて第1実施形態の加熱調理器と同一の構成をしており、図1A,図1A,図2を援用する。
11…扉
12…ハンドル
13…操作パネル
14…遮熱板
20…加熱室
20a…吸込部
20b…左上吹出部
20c…右上吹出部
20d…左中吹出部
20e…右中吹出部
20f…下上吹出部
20g…下上吹出部
21…角皿
22…焼き網
23,24…上側角皿受部
25,26…下側角皿受部
30…水タンク
31…ポンプ
32…第1給水パイプ
33…第2給水パイプ
34…つゆ戻し桶
40…蒸気発生装置
41…蒸気発生ボックス
42…蒸気発生ヒータ
43…蒸気昇温ヒータ
45…蒸気昇温部
44…蒸気吹出口
46…蒸気パイプ
47…蒸気発生ボックス温度センサ
50…電装品部
51…回転アンテナ
52…回転アンテナ用モータ
53…冷却ファン
54…冷却ファン用モータ
55…給気ファン
56…給気ファン用モータ
57…給気口
60…導波管
61…マグネトロン
71…排気口
72…排気ダクト
73…外部排気口
74…排気温度センサ
75…排気湿度センサ
76…庫内温度センサ
80…コンベクションファンケーシング
81…コンベクションファン
82…コンベクションヒータ
83…コンベクションファン用モータ
90…被加熱物
100…制御装置
100a…蒸気発生機能判定部
100b…ヒータ制御部
Claims (8)
- 本体ケーシングと、
上記本体ケーシング内に配置された水タンクと、
上記水タンクから供給された水を加熱して水蒸気を発生させる蒸気発生装置と、
上記蒸気発生装置からの水蒸気が供給される加熱室と、
上記蒸気発生装置からの水蒸気が上記加熱室内に供給される調理において、上記蒸気発生装置内の水の有無を間接的に表す物理量に関する情報に基づいて、上記水タンク内の水無を含む蒸気発生機能の停止か否かを判定する蒸気発生機能判定部と
を備えたことを特徴とする加熱調理器。 - 請求項1に記載の加熱調理器において、
上記蒸気発生装置は、上記水タンクから水が供給される蒸気発生容器と、上記蒸気発生容器内の水を加熱する蒸気発生ヒータとを有し、
上記蒸気発生容器の温度を検出する蒸気発生容器温度センサと、
上記蒸気発生装置からの水蒸気が上記加熱室内に供給される調理において、上記蒸気発生容器温度センサにより検出された上記蒸気発生容器の温度に基づいて、上記蒸気発生ヒータのオンオフを繰り返すように上記蒸気発生ヒータを制御する蒸気発生ヒータ制御部と
を備え、
上記蒸気発生装置内の水の有無を間接的に表す物理量に関する情報は、上記蒸気発生ヒータのオンオフ動作におけるオン時間に対するオフ時間の比を少なくとも含み、
上記蒸気発生機能判定部は、上記蒸気発生装置からの水蒸気が上記加熱室内に供給される調理において、上記蒸気発生ヒータのオンオフ動作におけるオン時間に対するオフ時間の比が所定値よりも大きいとき、上記水タンク内の水無を含む蒸気発生機能の停止であると判定することを特徴とする加熱調理器。 - 請求項1に記載の加熱調理器において、
上記本体ケーシング内に設けられ、上記加熱室内から上記本体ケーシングの外部に排気するための排気通路と、
上記排気通路内の雰囲気の排気温度または排気湿度を検出する排気通路用センサと
を備え、
上記蒸気発生装置内の水の有無を間接的に表す物理量は、上記排気通路内の雰囲気の上記排気温度または上記排気湿度を少なくとも含み、
上記蒸気発生機能判定部は、上記蒸気発生装置からの水蒸気が上記加熱室内に供給される調理において、上記排気通路用センサにより検出された上記排気温度または上記排気湿度に基づいて、上記水タンク内の水無を含む蒸気発生機能の停止か否かを判定することを特徴とする加熱調理器。 - 請求項3に記載の加熱調理器において、
上記蒸気発生装置は、上記水タンクからの水を加熱する蒸気発生ヒータを有し、
上記蒸気発生ヒータを制御する蒸気発生ヒータ制御部を備え、
上記蒸気発生ヒータ制御部は、上記蒸気発生装置からの水蒸気が上記加熱室内に供給される調理において上記蒸気発生ヒータをオンオフし、
上記蒸気発生機能判定部は、上記蒸気発生ヒータのオンに応じて、上記排気通路用センサにより検出された上記排気温度または上記排気湿度が高くなる方に変動しないとき、上記水タンク内の水無を含む蒸気発生機能の停止であると判定することを特徴とする加熱調理器。 - 請求項4に記載の加熱調理器において、
上記蒸気発生ヒータ制御部は、上記蒸気発生装置からの水蒸気が上記加熱室内に供給される調理において上記蒸気発生ヒータを繰り返しオンオフし、
上記蒸気発生機能判定部は、上記蒸気発生ヒータのオンオフに応じて、上記排気通路用センサにより検出された上記排気温度または上記排気湿度が高低に周期的に変動しないとき、上記水タンク内の水無を含む蒸気発生機能の停止であると判定することを特徴とする加熱調理器。 - 請求項2または4または5に記載の加熱調理器において、
上記水タンク内の水無を含む蒸気発生機能の停止は、上記蒸気発生装置の上記蒸気発生ヒータの故障を含むことを特徴とする加熱調理器。 - 請求項1から6までのいずれか1つに記載の加熱調理器において、
上記水タンク内の水無を含む蒸気発生機能の停止は、上記水タンクからの水を上記蒸気発生装置に供給するためのポンプの故障を含むことを特徴とする加熱調理器。 - 請求項1から7までのいずれか1つに記載の加熱調理器において、
上記加熱室内を加熱する加熱ヒータを備え、
上記蒸気発生機能判定部は、上記蒸気発生装置からの水蒸気が供給された上記加熱室内を上記加熱ヒータにより加熱する調理において、上記蒸気発生装置内の水の有無を間接的に表す物理量に関する情報に基づいて、上記水タンク内の水無を含む蒸気発生機能の停止か否かを判定することを特徴とする加熱調理器。
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- 2010-04-13 CN CN201080013187.9A patent/CN102362121B/zh not_active Expired - Fee Related
- 2010-04-13 US US13/259,044 patent/US8695487B2/en active Active
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Also Published As
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SG10201401534XA (en) | 2014-08-28 |
JP4586111B1 (ja) | 2010-11-24 |
US20120017770A1 (en) | 2012-01-26 |
CN102362121B (zh) | 2014-11-05 |
SG175216A1 (en) | 2011-11-28 |
US8695487B2 (en) | 2014-04-15 |
JP2010266187A (ja) | 2010-11-25 |
CN102362121A (zh) | 2012-02-22 |
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