JP2015230116A - Heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating device capable of reducing the risk of imparting discomfort to a user even when supply of a power source is cut off during a period from the stop of heating until the restart of heating.SOLUTION: An electric heater 10 includes: a level receiving unit 29b for receiving setting of a heating level; a mode receiving unit 29a for receiving an operation mode; a heater 21 capable of varying output; a temperature sensor for detecting an ambient temperature of the heater 21; and a control unit. The operation mode includes a normal heating mode and a rapid heating mode. The rapid heating mode is the operation mode in which, at the heating start time, the ambient temperature is increased rapidly. The control unit controls the output of the heater 21 according to the operation mode which the mode receiving unit 29a has received. Then, the control unit, in the rapid heating mode, shifts the operation mode from the rapid heating mode to the normal heating mode when an ambient temperature value detected by the temperature sensor has reached a temperature threshold value determined for every heating level.

Description

  The present invention relates to a heating device including a heater.

  Some conventional heating apparatuses have a rapid heating mode in which the temperature is rapidly increased at the start of heating as an operation mode. In such a heating device, when the execution time of the rapid heating mode is fixed at a certain time, the target temperature corresponding to the heating level set by the user may be excessively exceeded depending on the start / stop state of the heater. There is a problem that the user is uncomfortable.

  As a measure against this, for example, in the heating device disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. 2011-80681), the time from the stop of heating to the restart of heating is measured by a timer, and this measured value is set to this measured value. The execution time of the rapid heating mode is adjusted accordingly.

  By the way, in order for the timer to measure time, it is necessary to supply power to the timer. For this reason, when a timer is used to adjust the execution time of the rapid heating mode as in the heating device disclosed in Patent Document 1, a power failure or a period of time between the stop of heating and the restart of heating If the power supply to the heating device is cut off, for example, because the outlet is disconnected, the timer stops operating or the timer measurement value is reset. If it does so, since it becomes impossible to adjust the execution time of rapid heating mode, there exists a possibility of giving a user discomfort.

  Then, the subject of this invention is providing the heating apparatus which can reduce a possibility of giving a user discomfort even if supply of power is cut off after heating is stopped until heating is restarted. is there.

  The heating device according to the first aspect of the present invention includes a level reception unit, a mode reception unit, a heater, a temperature sensor, and a control unit. The level reception unit receives the setting of the heating level. The mode reception unit receives the operation mode. The operation mode includes a normal heating mode and a rapid heating mode. The rapid heating mode is an operation mode in which the ambient temperature of the heater is rapidly increased at the start of heating. The output of the heater is variable. The temperature sensor detects the ambient temperature of the heater. The control unit controls the output of the heater according to the operation mode received by the mode receiving unit. Then, in the rapid heating mode, the control unit shifts the operation mode from the rapid heating mode to the normal heating mode when the ambient temperature value detected by the temperature sensor reaches a temperature threshold value determined for each heating level. .

  In the heating apparatus according to the first aspect of the present invention, when the ambient temperature value detected by the temperature sensor reaches a temperature threshold value corresponding to the heating level, the operation mode is shifted from the rapid heating mode to the normal heating mode. For this reason, the rapid heating mode can be terminated without the ambient temperature of the heater excessively exceeding the target temperature corresponding to the heating level. Further, in this heating apparatus, since the operation mode is shifted from the rapid heating mode to the normal heating mode based on the ambient temperature value detected by the temperature sensor, the heating is stopped when determining the timing to end the rapid heating mode. It does not matter whether or not power is supplied.

  Thereby, even if the supply of power is cut off after the heating is stopped and before the heating is restarted, it is possible to reduce the possibility of giving the user an unpleasant feeling.

  In the heating device according to the second aspect of the present invention, in the heating device according to the first aspect, in the rapid heating mode, the rapid heating reference time is predetermined for each heating level. The rapid heating reference time is a reference time for executing the rapid heating mode. And a control part determines the timing which complete | finishes rapid heating mode in rapid heating mode based on the ambient temperature value detected by a temperature sensor, and rapid heating reference time.

  By the way, when the ambient temperature of the heater is detected by the temperature sensor, the ambient temperature may not be stabilized depending on the airflow condition or the like, and a difference occurs between the ambient temperature value detected by the temperature sensor and the actual ambient temperature value. Sometimes. In such a case, when the timing for ending the rapid heating mode is determined based only on the ambient temperature value detected by the temperature sensor, the rapid heating mode may not be terminated at an appropriate timing.

  In the heating device according to the second aspect of the present invention, since the timing for ending the rapid heating mode is determined based on the ambient temperature value detected by the temperature sensor and the rapid heating reference time, the ambient temperature detected by the temperature sensor Rather than determining the timing for ending the rapid heating mode based only on the temperature value, the possibility that the rapid heating mode cannot be terminated at an appropriate timing can be reduced.

  The heating apparatus according to a third aspect of the present invention is the heating apparatus according to the second aspect, wherein the controller detects the ambient temperature detected by the temperature sensor before the rapid heating reference time elapses after the rapid heating mode is started. When the value reaches the temperature threshold, the rapid heating mode is terminated.

  Here, when the rapid heating mode is executed until the rapid heating reference time elapses, the rapid heating mode may not end even though the ambient temperature of the heater has reached the target temperature corresponding to the heating level. . If it does so, there exists a possibility that the ambient temperature of a heater may exceed the target temperature according to a heating level excessively.

  In the heating apparatus according to the third aspect of the present invention, when the ambient temperature value detected by the temperature sensor reaches the temperature threshold corresponding to the heating level before the rapid heating reference time elapses, the rapid heating mode is set. Is terminated. For this reason, when the ambient temperature of the heater reaches the target temperature corresponding to the heating level, the rapid heating mode ends. Therefore, in this heating apparatus, it is possible to prevent the ambient temperature of the heater from excessively exceeding the target temperature corresponding to the heating level.

  A heating apparatus according to a fourth aspect of the present invention is the heating apparatus according to the second aspect or the third aspect, wherein the controller is a temperature sensor after the rapid heating reference time has elapsed since the rapid heating mode was started. If the ambient temperature value detected by the step does not reach the temperature threshold, the rapid heating mode is continued.

  Here, when the rapid heating mode is executed until the rapid heating reference time elapses, the rapid heating mode may end even if the ambient temperature of the heater does not reach the target temperature corresponding to the heating level. . Then, the time required for the ambient temperature of the heater to reach the target temperature corresponding to the heating level may be long.

  In the heating apparatus according to the fourth aspect of the present invention, the rapid heating mode is continued when the ambient temperature of the heater does not reach the target temperature corresponding to the heating level even after the rapid heating reference time has elapsed. The time until the ambient temperature of the heater reaches the target temperature corresponding to the heating level can be shortened.

  A heating device according to a fifth aspect of the present invention is the heating device according to any one of the first to fourth aspects, and includes a casing that houses the heater therein. The temperature sensor detects the temperature in the casing. In this heating apparatus, the timing for shifting the operation mode from the rapid heating mode to the normal heating mode is determined based on the temperature in the casing.

  A heating device according to a sixth aspect of the present invention includes the shielding plate for protecting the level receiving unit and the mode receiving unit from the heat of the heater in any one of the first to fifth heating devices. The shielding plate includes a first shielding plate and a second shielding plate disposed on the heater side with respect to the first shielding plate. The temperature sensor is disposed between the first shielding plate and the second shielding plate. In this heating device, since the temperature sensor is disposed between the first shielding plate and the second shielding plate, the possibility that the temperature sensor becomes too high can be reduced.

  This can reduce the risk of shortening the lifetime of the temperature sensor.

  In the heating apparatus according to the first aspect of the present invention, even if the supply of power is cut off after the heating is stopped until the heating is restarted, it is possible to reduce the possibility of giving the user unpleasant feeling.

  In the heating apparatus according to the second aspect of the present invention, the possibility that the rapid heating mode cannot be terminated at an appropriate timing can be reduced.

  In the heating apparatus according to the third aspect of the present invention, it is possible to prevent the ambient temperature of the heater from excessively exceeding the target temperature corresponding to the heating level.

  In the heating apparatus according to the fourth aspect of the present invention, the time until the ambient temperature of the heater reaches the target temperature corresponding to the heating level can be shortened.

  In the heating device according to the fifth aspect of the present invention, the timing for shifting the operation mode from the rapid heating mode to the normal heating mode is determined based on the temperature in the casing.

  In the heating device according to the sixth aspect of the present invention, the risk that the lifetime of the temperature sensor is shortened can be reduced.

The perspective view of the electric heater concerning one embodiment of the present invention. The front view of the electric stove which concerns on one Embodiment of this invention. The front view of the electric stove which concerns on one Embodiment of this invention. The side view of the electric heater concerning one embodiment of the present invention. The rear view of the electric heater concerning one embodiment of the present invention. The conceptual diagram of a main-body part. The perspective view of the main-body part of the state from which the 1st shielding board was removed. The perspective view of the main-body part of a state from which the reflecting plate was removed. The control block diagram of the control part with which an electric stove is provided. The flowchart which shows the control action by the control part at the time of rapid heating mode execution. The figure which shows the change of the detected temperature value until it reaches the target temperature threshold value according to a predetermined heating level, after starting heating, when normal heating mode or rapid heating mode is performed.

  Hereinafter, an electric stove 10 as a heating device according to an embodiment of the present invention will be described with reference to the drawings. The embodiments described below are specific examples of the present invention and do not limit the technical scope of the present invention.

(1) Whole structure FIG. 1: is the perspective view which looked at the electric heater 10 from the front side. 2 and 3 are front views of the electric heater 10. FIG. 4 is a side view of the electric heater 10. FIG. 5 is a rear view of the electric heater 10. The electric stove 10 includes a main body 20 and a base 30 that is provided separately from the main body 20. The main body 20 has a heater 21. The base unit 30 is installed on the floor surface F. The electric stove 10 has a swinging function, and the main body 20 is supported so as to be rotatable with respect to the base 30. Further, as shown in FIGS. 2 and 3, the main body 20 can change the extending direction of the main body 20 by rotating the main body 20 around the upper part of a support column 32 described later as a rotation axis. It is configured.

(2) Detailed configuration (2-1) Base portion 30
The base unit 30 includes a pedestal 31 and a support column 32. The pedestal 31 is a part installed on the floor surface F, and has a box shape. A power cord 33 is attached to the back side of the pedestal 31.

  The support column 32 is a columnar member extending upward from the upper surface 31 a of the base 31. The lower part of the support column 32 is rotatably attached to the pedestal 31. A bracket 23 provided on the back side of the main body 20 is attached to the front side of the upper portion of the column 32 (see FIG. 4). Moreover, the support | pillar 32 has the shape which the front side of the upper part retreated to the back side compared with the lower part in the side view, as FIG. 4 shows. The main body 20 is attached to the front side of the support 32 so that the center of gravity of the combined member of the support 32 and the main body 20 is positioned on the pedestal 31. With such a configuration, the electric stove 10 can stably stand upright.

  In addition, an electrical component box (not shown) for storing a printed circuit board for power supply is disposed inside the pedestal 31. A power cord 33 is connected to the power printed wiring board, and commercial power is supplied from the power cord 33 to the power printed wiring board. Further, a swinging motor 35 (see FIG. 9) is accommodated in the base 31, and power is supplied to the motor 35 from a printed wiring board for power supply.

(2-2) Main unit 20
FIG. 6 is a conceptual diagram for explaining the positional relationship between various devices included in the main body unit 20. FIG. 7 is a perspective view of the main body 20 with the first shielding plate 28a removed. FIG. 8 is a perspective view of the main body 20 with the reflector 22 removed.

  The main body 20 includes a main body casing 24, a guard 25, a variable output heater 21, a reflection plate 22, a bracket 23, and an operation unit 26.

  The main body casing 24 houses the heater 21 and the reflecting plate 22. The guard 25 is formed by combining a large number of thin metal bars, and is attached to the front side of the main body casing 24. In addition, a large number of openings 24 b are formed on the back side of the main casing 24 in order to release the heat in the main casing 24 to the outside. And heat is radiated | emitted toward the front side through the clearance gap between the metal bars of the guard 25 with which the front side of the main body casing 24 was mounted | worn, and the heating by the electric stove 10 is performed. Furthermore, in order to incline the direction of the reflecting plate 22 upward or downward, the main body portion 20 is configured to be able to change the angle with respect to the extending direction of the support column 32 via the bracket 23. .

  The operation unit 26 is disposed on the top plate 24 a of the main body casing 24. The operation unit 26 is provided with an operation reception unit 29 for receiving settings related to the operation of the electric heater 10. The operation receiving unit 29 of the present embodiment includes a mode receiving unit 29a that receives the operation mode and a level receiving unit 29b that receives the setting of the heating level.

  As shown in FIG. 6, an operation printed wiring board 80 and a shielding plate 28 are disposed below the operation unit 26. A display printed wiring board 81 on which an LED lamp or the like is mounted is electrically connected to the operation printed wiring board 80. A part of the operation according to the operation command instructed to the operation printed wiring board 80 by the operation receiving unit 29 or the like is directly executed by the operation unit 26. For example, a signal is transmitted from the operation printed wiring board 80 to the display printed wiring board 81, and the display printed wiring board 81 turns on the lamp, whereby the display is performed on the display unit 27.

  The shielding plate 28 includes a first shielding plate 28a and a second shielding plate 28b that is disposed closer to the heater 21 than the first shielding plate 28a. The operation printed wiring board 80 and the display printed wiring board 81 are accommodated in a space surrounded by the top plate 24a and the first shielding plate 28a. Further, the presence of the second shielding plate 28b closer to the heater 21 than the first shielding plate 28a prevents the influence of the heat caused by the heater 21 on the operation printed wiring board 80 and the display printed wiring board 81. Yes.

  And the main-body part 20 of this embodiment has the temperature sensor 90 which detects the temperature (ambient temperature of the heater 21) in the main body casing 24, and the indoor temperature sensor 91 which detects indoor temperature. The temperature sensor 90 includes a first temperature sensor 90a and a second temperature sensor 90b. As shown in FIGS. 6 and 7, the first temperature sensor 90a is disposed in a space between the first shielding plate 28a and the second shielding plate 28b. The 2nd temperature sensor 90b is arrange | positioned in the space between the main body casing 24 and the reflecting plate 22 (refer FIG. 8). As shown in FIGS. 4 and 5, the indoor temperature sensor 91 is disposed on the back surface of the main casing 24 so as not to be affected by the heat of the heater 21.

(2-3) Control unit 60
FIG. 9 is a control block diagram of the control unit 60 provided in the electric heater 10. The control unit 60 controls the output of the heater 21 and the operation of the swinging motor 35 in accordance with the operation instruction received by the operation unit 26. For example, when the user operates the level receiving unit 29b to set the heating level, an electric signal corresponding to the set heating level is transmitted to the control unit 60. In response to this, the control unit 60 controls the output of the heater 21 in accordance with the transmitted electrical signal. In addition, the heating level of this embodiment has ten steps, and the target temperature threshold value according to each heating level is determined beforehand. Moreover, the target temperature threshold value determined for every heating level is memorize | stored in the memory | storage part (not shown).

  Moreover, the control part 60 controls the output of the heater 21 according to the operation mode received by the mode receiving part 29a. The operation mode includes a normal heating mode and a rapid heating mode.

  In the normal heating mode, the heater 21 is set such that the temperature value detected by the first temperature sensor 90a or the second temperature sensor 90b becomes the target temperature threshold value corresponding to the heating level set by receiving the temperature value by the level receiving unit 29b. Is energized. In the normal heating mode, the temperature value detected by the first temperature sensor 90a or the second temperature sensor 90b is set according to the target temperature threshold so that the temperature does not exceed the target temperature threshold corresponding to the set heating level. The output of the heater 21 is limited. For example, when the heating level is set to “1” corresponding to the first stage among the 10 stages, the output is limited so that the output of the heater does not exceed the predetermined first output, and the heating level is 10 When “2” corresponding to the second stage from the bottom is set, the heater output is limited so as not to exceed a predetermined second output larger than the predetermined first output. Furthermore, in the normal heating mode, the heater 21 is repeatedly started and stopped so that the temperature value detected by the first temperature sensor 90a or the second temperature sensor 90b does not exceed the target temperature threshold corresponding to the set heating level. It is.

  The rapid heating mode is a mode executed at the start of heating, and the user can set whether or not to execute the rapid heating mode by operating the mode reception unit 29a. In the rapid heating mode, the energization control is performed on the heater 21 so that the temperature value detected by the first temperature sensor 90a or the second temperature sensor 90b rapidly rises to a target temperature threshold corresponding to the set heating level. Is done. Specifically, in the rapid heating mode, the heater 21 is controlled at a high output regardless of the set heating level. In the rapid heating mode of the present embodiment, the output of the heater 21 is the maximum output (the same output of the heater 21 as when the heating level is set to “10” corresponding to the 10th maximum stage among the 10 levels). Thus, the energization control is performed on the heater 21. For example, even if the heating level is set to “1” or the heating level is set to “2”, the output of the heater is controlled to be the maximum output. In the present embodiment, the heater 21 is not stopped while the rapid heating mode is being executed.

  Furthermore, the rapid heating reference time serving as a reference for the time for executing the rapid heating mode is determined in advance for each heating level, and the rapid heating reference time is stored in a storage unit (not shown). The rapid heating reference time is required until the temperature value detected by the temperature sensor 90 reaches the target temperature threshold corresponding to the set heating level when the heater 21 is controlled at the maximum output from the start of heating. It is time and is determined by simulation, desktop calculation, experiment, and the like. And the control part 60 determines the timing which complete | finishes rapid heating mode in rapid heating mode based on the temperature value detected by the temperature sensor 90, and rapid heating reference time. Specifically, the control unit 60 determines a predetermined target temperature corresponding to the heating level at which the temperature value detected by the temperature sensor 90 is set before the rapid heating reference time elapses after the rapid heating mode is started. When the threshold is reached, the rapid heating mode is terminated. Moreover, in this embodiment, the control part 60 is the predetermined | prescribed according to the heating level by which the temperature value detected by the temperature sensor 90 was set before rapid heating reference time passes after starting rapid heating mode. If the target temperature threshold is not reached, the rapid heating mode is terminated when the rapid heating reference time has elapsed. And control part 60 will change operation mode from rapid heating mode to normal heating mode, if rapid heating mode is ended.

  In the present embodiment, the detected temperature value is transmitted from the temperature sensor 90 to the control unit 60 every predetermined time (for example, every minute), and the control unit 60 transmits the temperature value from the temperature sensor 90. Each time it is determined whether the transmitted temperature value is equal to or higher than a predetermined target temperature threshold value. Further, the temperature sensor 90 of the present embodiment includes the first temperature sensor 90a and the second temperature sensor 90b. In the rapid heating mode, the temperature above the first temperature sensor 90a and the second temperature sensor 90b. A temperature value detected by the sensor is employed. That is, when heating is performed in a state where the longitudinal direction of the main body 20 is in a direction intersecting the floor F (the state shown in FIG. 2), the first temperature sensor 90a detects the heating in the rapid heating mode. The temperature value to be used is adopted. On the other hand, when heating is performed in a state where the longitudinal direction of the main body portion 20 is parallel to the floor surface F (the state shown in FIG. 3), the second temperature sensor 90b is used in the rapid heating mode. The detected temperature value is adopted. Next, a specific rapid heating mode will be described with reference to a flowchart.

(3) Rapid heating mode FIG. 10: is a flowchart which shows the control action by the control part 60 at the time of rapid heating mode execution. The control unit 60 receives an electrical signal transmitted from the level receiving unit 29b and the mode receiving unit 29a when the electric stove 10 is powered on. And in step S1, when the electric signal transmitted from the mode reception part 29a is an electric signal regarding rapid heating mode, while the control part 60 starts execution of rapid heating mode, it progresses to step S2. On the other hand, when the electric signal transmitted from the mode receiving unit 29a is not an electric signal related to the rapid heating mode in step S1, the control unit 60 starts executing the normal heating mode.

  In step S2, the control part 60 determines the setting of a heating level based on the electric signal transmitted from the level reception part 29b. And the control part 60 progresses to step S3 while acquiring the target temperature threshold value and rapid heating reference time according to the determined heating level from a memory | storage part.

  In step S <b> 3, the control unit 60 performs energization control on the heater 21 so that the output of the heater 21 becomes the maximum output. Then, the process proceeds to step S4.

  In step S4, it is determined whether or not the temperature value detected by the first temperature sensor 90a or the second temperature sensor 90b is equal to or higher than a target temperature threshold value corresponding to the set heating level. If it is determined in step S4 that the temperature value detected by the first temperature sensor 90a or the second temperature sensor 90b is equal to or higher than the target temperature threshold corresponding to the set heating level, the process proceeds to step S6. . On the other hand, if it is determined in step S4 that the temperature value detected by the first temperature sensor 90a or the second temperature sensor 90b is not equal to or higher than the target temperature threshold corresponding to the set heating level, the process proceeds to step S5. .

  In step S5, the control unit 60 determines whether or not the rapid heating reference time has elapsed since the rapid heating mode was started. And when it determines with rapid heating reference time having passed in step S5, it progresses to step S6. On the other hand, if it is determined in step S5 that the rapid heating reference time has not elapsed, the process returns to step S4.

  In step S6, the control unit 60 ends the rapid heating mode and shifts the operation mode from the rapid heating mode to the normal heating mode. Specifically, the control unit 60 changes the output of the heater 21 that has been controlled to have the maximum output to the heating level at which the temperature value detected by the first temperature sensor 90a or the second temperature sensor 90b is set. Control is performed so as to limit the temperature so that the target temperature threshold is maintained.

(3) Features (3-1)
Here, when parts that require power supply such as a timer are used when adjusting the execution time of the rapid heating mode, the power supply to the electric stove is stopped after heating is stopped until heating is restarted. If the supply is cut off, the execution time of the rapid heating mode cannot be adjusted, which may cause discomfort to the user. Further, if the execution time of the rapid heating mode cannot be adjusted, there is a high possibility that the temperature detected by the temperature sensor 90 exceeds a predetermined target temperature corresponding to the set heating level depending on the room temperature.

  In the present embodiment, since the operation mode is shifted from the rapid heating mode to the normal heating mode based on the temperature value detected by the temperature sensor 90, the power supply during the heating stop is determined when determining the timing to end the rapid heating mode. The presence or absence of supply is not relevant.

  Thereby, even if the supply of power is cut off after the heating is stopped until the heating is restarted, it is possible to reduce a possibility that the user may feel uncomfortable.

  In the present embodiment, in the rapid heating mode, when the temperature value detected by the temperature sensor 90 reaches the target temperature threshold corresponding to the set heating level, the operation mode is changed from the rapid heating mode to the normal heating mode. To be migrated. For this reason, the rapid heating mode can be terminated without excessively exceeding the predetermined target temperature corresponding to the set heating level by the temperature detected by the temperature sensor 90.

(3-2)
Here, the temperature detected by the temperature sensor 90 may not be stable depending on the airflow situation or the like. In this case, a difference may occur between the temperature detected by the temperature sensor 90 and the actual temperature. Then, if the timing for ending the rapid heating mode is determined based only on the temperature value detected by the temperature sensor 90, the rapid heating mode may not be terminated at an appropriate timing.

  In the present embodiment, the timing for ending the rapid heating mode is determined based on the temperature value detected by the temperature sensor 90 and the rapid heating reference time. For this reason, the possibility that the rapid heating mode cannot be terminated at an appropriate timing can be reduced, rather than the timing at which the rapid heating mode is terminated based on only the temperature value detected by the temperature sensor 90.

(3-3)
Here, when the rapid heating mode is executed until the rapid heating reference time elapses, depending on the room temperature, the heating level in which the temperature value detected by the temperature sensor 90 is set before the rapid heating reference time elapses. May reach a target temperature threshold. However, since the rapid heating reference time has not elapsed, the rapid heating mode does not end, and the temperature detected by the temperature sensor 90 may excessively exceed the target temperature corresponding to the set heating level.

  In the present embodiment, when the temperature value detected by the temperature sensor 90 reaches the target temperature threshold corresponding to the set heating level before the rapid heating reference time elapses after the rapid heating mode is started. The rapid heating mode is terminated. For this reason, when the temperature detected by the temperature sensor 90 reaches the target temperature corresponding to the set heating level, the rapid heating mode ends. Therefore, it is possible to prevent the temperature detected by the temperature sensor 90 from excessively exceeding the target temperature corresponding to the set heating level.

(3-4)
The temperature sensor 90 of this embodiment detects the temperature in the main body casing 24. For this reason, based on the temperature in the main body casing 24, the timing for shifting the operation mode from the rapid heating mode to the normal heating mode can be determined.

  By the way, when the rapid heating mode is executed until the rapid heating reference time elapses, when the heating is resumed immediately after the heating is stopped, the heating level at which the temperature detected by the temperature sensor 90 is set. There is a high possibility that the target temperature corresponding to the temperature will be exceeded.

  In the present embodiment, since the rapid heating mode is terminated based on the temperature in the main body casing 24, the temperature detected by the temperature sensor 90 is set even when the heating is resumed immediately after the heating is stopped. The possibility of exceeding the target temperature according to the heating level that has been performed can be reduced.

(3-5)
The electric stove 10 of the present embodiment includes a shielding plate 28 for protecting the operation receiving unit 29 and the like from the heat of the heater 21. And the 1st temperature sensor 90a is arrange | positioned in the space between the 2nd shielding board 28b arrange | positioned at the heater 21 side rather than the 1st shielding board 28a and the 1st shielding board 28a. For this reason, the possibility that the first temperature sensor 90a becomes too high can be reduced.

  As a result, it is possible to prevent the life of the first temperature sensor 90a from being shortened.

(3-6)
FIG. 11 shows changes in the detected temperature value from when heating is started until the target temperature threshold value corresponding to the heating level “2” is reached and when heating is started when the normal heating mode or the rapid heating mode is executed. It is a figure which shows the change of the detected temperature value until it reaches the target temperature threshold value according to heating level "8". In FIG. 11, the solid line indicates the detected temperature value in the rapid heating mode, and the broken line indicates the detected temperature value in the normal heating mode.

  In the normal heating mode of the present embodiment, the output of the heater 21 is limited according to each target temperature threshold so that the temperature value detected by the temperature sensor 90 does not exceed the target temperature threshold corresponding to the set heating level. The On the other hand, in the rapid heating mode, energization control is performed on the heater 21 so that the output of the heater 21 becomes the maximum output. For this reason, when heating is started in the electric stove 10, the heating level in which the temperature value detected by the temperature sensor 90 is set when the normal heating mode is executed and when the rapid heating mode is executed. The time taken to reach the target temperature threshold according to the value varies. Specifically, when the heating level is set to “2”, as shown in FIG. 11, the temperature value detected by the temperature sensor 90 when the rapid heating mode is executed is the heating level “2”. The time tF1 required to reach the target temperature threshold corresponding to “” is until the temperature value detected by the temperature sensor 90 reaches the target temperature threshold corresponding to the heating level “2” when the normal heating mode is executed. It becomes shorter than the time tN1. When the heating level is set to “8”, as shown in FIG. 11, the temperature value detected by the temperature sensor 90 when the rapid heating mode is executed corresponds to the heating level “8”. The time tF2 required to reach the target temperature threshold is the time tN2 required for the temperature value detected by the temperature sensor 90 to reach the target temperature threshold corresponding to the heating level “8” when the normal heating mode is executed. Shorter than. In other words, when the normal heating mode is executed when heating is started, the temperature value detected by the temperature sensor 90 corresponds to the set heating level, compared to the case where the rapid heating mode is executed. It takes longer time to reach the target temperature threshold. In particular, when the normal heating mode is executed when the heating level is set to a low level, the output of the heater 21 is low, so the temperature value detected by the temperature sensor 90 is a target corresponding to the set heating level. The time required to reach the temperature threshold increases. For this reason, in the rapid heating mode for shortening the time until the temperature value detected by the temperature sensor 90 reaches the target temperature threshold corresponding to the set heating level, the heating level is set to a low level. Is particularly effective.

(4) Modification (4-1) Modification A
In the above embodiment, when the temperature value detected by the temperature sensor 90 does not reach the target temperature threshold corresponding to the set heating level before the rapid heating reference time elapses after the rapid heating mode is started. The rapid heating mode is terminated when the rapid heating reference time has elapsed.

  Here, when the rapid heating mode is executed until the rapid heating reference time elapses, depending on the room temperature, the temperature detected by the temperature sensor 90 does not reach the target temperature threshold corresponding to the set heating level. Sometimes. However, since the rapid heating mode ends even if the temperature detected by the temperature sensor 90 does not reach the target temperature threshold corresponding to the set heating level, the temperature detected by the temperature sensor 90 is consequently reduced. The time required to reach the target temperature corresponding to the set heating level may be longer.

  Therefore, in addition to the above embodiment, even after the rapid heating reference time has elapsed since the rapid heating mode was started, the temperature value detected by the temperature sensor 90 reaches the target temperature threshold corresponding to the heating level. If not, the rapid heating mode may be continued without being terminated. Thereby, the time until the temperature detected by the temperature sensor 90 reaches the target temperature corresponding to the set heating level can be shortened.

  The present invention relates to a heating device that can reduce the possibility of causing discomfort to the user even if the supply of power is cut off after the heating is stopped until the heating is restarted, and is provided with a heater. Application to equipment is effective.

10 Electric stove (heating device)
21 Heater 24 Body casing (casing)
28 shielding plate 28a first shielding plate 28b second shielding plate 29a mode receiving unit 29b level receiving unit 60 control unit 90 temperature sensor

JP 2011-80681 A

Claims (6)

A variable output heater (21);
A level receiving unit (29b) for receiving the setting of the heating level;
A mode receiving unit (29a) for receiving a normal heating mode and an operation mode including a rapid heating mode for rapidly increasing the ambient temperature of the heater at the start of heating;
A temperature sensor (90) for detecting the ambient temperature;
A control unit (60) for controlling the output of the heater according to the operation mode received by the mode receiving unit;
With
In the rapid heating mode, the control unit changes the operation mode from the rapid heating mode to the normal temperature when an ambient temperature value detected by the temperature sensor reaches a temperature threshold value determined for each heating level. Transition to heating mode,
Heating device (10). In the rapid heating mode, a rapid heating reference time serving as a reference of time for executing the rapid heating mode is determined in advance for each heating level,
The control unit determines a timing for ending the rapid heating mode based on an ambient temperature value detected by the temperature sensor and the rapid heating reference time in the rapid heating mode.
The heating device according to claim 1. The controller, when the ambient temperature value detected by the temperature sensor reaches the temperature threshold before the rapid heating reference time elapses after the rapid heating mode is started, the rapid heating mode Exit,
The heating device according to claim 2. When the ambient temperature value detected by the temperature sensor has not reached the temperature threshold even after the rapid heating reference time has elapsed since starting the rapid heating mode, the control unit, Continuing the rapid heating mode;
The heating device according to claim 2 or 3. A casing (24) for housing the heater therein,
The temperature sensor detects a temperature in the casing;
The heating device according to any one of claims 1 to 4. A shielding plate (28) for protecting the level receiving unit and the mode receiving unit from the heat of the heater;
Further comprising
The shielding plate includes a first shielding plate (28a) and a second shielding plate (28b) disposed on the heater side with respect to the first shielding plate,
The temperature sensor is disposed between the first shielding plate and the second shielding plate,
The heating device according to any one of claims 1 to 5.

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