JP2019192356A - Heating cooker - Google Patents

Abstract

To provide a heating cooker which reduces a power consumption of a temperature detection module detecting a temperature distribution on a top plate of a heating cooker from an upper direction.SOLUTION: A heating cooker comprises: a main body having a top plate, a heating part that heats a container housing a cooking material, and a heating control part that controls a heating output; and a temperature detection module having a temperature detection part that detects periodically a temperature distribution on the top plate from the upper direction. The main body comprises a first communication part which performs a wireless communication with the temperature detection module. The temperature detection module comprises a second communication part which performs a wireless communication with the main body. The heating control part comprises a detection period setting part in which temperature information is transmitted to the first communication part from the second communication part, the heating control part performs the control of the heating output in accordance with the temperature information transmitted, and which sets a period of a temperature detection in the temperature detection part in accordance with the temperature information detected in the temperature detection part.SELECTED DRAWING: Figure 4

Description

  The present disclosure relates to a cooking device, and more particularly to a cooking device that detects the temperature of an object to be heated.

  Conventionally, the heating power of the cooking device is adjusted based on the temperature of the pan bottom. The temperature at the bottom of the pan is detected by a temperature detection element disposed below the plate. However, when a temperature difference occurs between the temperature in the pot and the temperature at the bottom of the pot, a transmission delay of the detected temperature occurs. As a result, for example, when the temperature of the pan is lowered by putting food into the pan, it takes time to return to the original temperature, and scorching occurs at high temperatures, and the thermal power control may become unstable. is there.

  Therefore, for example, in the cooking device of Patent Document 1, a temperature detection device that can be attached to and detached from the duct is disposed. The temperature detection device can communicate with the cooking device, and detects the temperature of the object to be heated from above.

  The heating cooker of patent document 1 adjusts the installation position of a temperature detection apparatus using the infrared element mounted in the temperature detection element arrange | positioned upwards. Infrared rays received from the infrared element are received by a plurality of communication units arranged below the plate of the cooking device. The position of the temperature detection element is calculated from the difference in the amount of received light in each communication unit.

JP-A-2015-106462

  However, the temperature detection module may be attached to a hood that is not dedicated to it. Since the hood to be attached has various shapes, it may be difficult to supply power to the temperature detection module by wire. In this case, the temperature detection module is driven by, for example, a battery, but the need for battery replacement occurs, and the burden on the user increases.

  Accordingly, an object of the present disclosure is to solve the above-described problem, and to provide a heating cooker that reduces power consumption of a temperature detection module that detects a temperature distribution on a top plate of the cooking device from above. is there.

Department for solving problems

In order to achieve the above object, a heating cooker according to an aspect of the present disclosure includes a top plate on which a container for storing a cooked product, a heating unit for heating the container, and a heating output of the heating unit. A heating control unit for controlling, and a main body,
A temperature detection module including a temperature detection unit that periodically detects a temperature distribution on the top plate from above the top plate;
The main body includes a first communication unit that performs wireless communication with the temperature detection module,
The temperature detection module includes a second communication unit that performs wireless communication with the main body,
The temperature information detected by the temperature detection unit is transmitted from the second communication unit to the first communication unit,
The heating control unit controls the heating output according to the temperature information sent,
A detection cycle setting unit configured to set a cycle of temperature detection in the temperature detection unit according to temperature information detected by the temperature detection unit;

  It is possible to provide a cooking device in which the power consumption of the temperature detection module that detects the temperature distribution on the top plate of the cooking device from above is reduced.

The perspective view of the heating cooker which concerns on Embodiment 1. FIG. Top view of cooking device Explanatory drawing which shows the installation state of a heating cooker roughly The block diagram which shows the control system of the heating cooker which concerns on Embodiment 1. FIG. Flow chart showing the flow of changing the detection cycle Explanatory diagram showing the timing of detection cycle change Explanatory drawing which shows roughly the installation state of the heating cooker which has a temperature detection part in a main body A graph showing an example of temperature change of an object to be heated

  According to one aspect of the present disclosure, a main body including a top plate on which a container for storing a food is placed, a heating unit that heats the container, and a heating control unit that controls the heating output of the heating unit; A temperature detection module including a temperature detection unit that periodically detects a temperature distribution on the top plate from above the top plate, wherein the main body wirelessly communicates with the temperature detection module The temperature detection module includes a second communication unit that performs wireless communication with the main body, and temperature information detected by the temperature detection unit is transmitted from the second communication unit to the first communication unit, The heating control unit controls the heating output according to the received temperature information, and sets a detection cycle setting for setting the temperature detection cycle at the temperature detection unit according to the temperature information detected by the temperature detection unit. Part Provided.

  The detection cycle setting unit may set a temperature detection cycle based on an absolute value of the detected temperature.

  The detection cycle setting unit may shorten the temperature detection cycle when the absolute value of the temperature detected by the temperature detection unit becomes higher than a predetermined value.

  The detection cycle setting unit may set a temperature detection cycle according to a fluctuation value of the detected temperature per unit time.

  The detection cycle setting unit may shorten the temperature detection cycle when the fluctuation value per unit time of the temperature detected by the temperature detection unit increases from a predetermined fluctuation value.

  The detection cycle setting unit may change the temperature detection cycle according to an instruction from the main body.

  In addition, a human body detection unit that detects the presence of a human body may be provided, and the detection cycle setting unit may change a cycle of temperature detection when the human body detection unit detects a human body.

  Moreover, the period after which the temperature detection unit detects the temperature may be shorter than the period after the change by the detection period setting unit.

  The temperature detection module may include a power storage unit, and the power storage unit may supply power to the temperature detection unit and the second communication unit.

  The temperature detection unit may include a plurality of temperature detection elements arranged in an array.

  The heating unit may include a heating coil that generates an induction magnetic field to heat the container, and the heating control unit may supply a high-frequency current to the heating coil to heat the container.

(Embodiment 1)
Hereinafter, the cooking device according to the first embodiment of the present disclosure will be described with reference to FIGS. 1 to 4. FIG. 1 is a perspective view of a heating cooker 1 according to Embodiment 1 of the present disclosure. FIG. 2 is a top view of the heating cooker 1 according to the first embodiment. FIG. 3 is a schematic view showing an installed state of the cooking device. FIG. 4 is a block diagram showing a control system of the heating cooker 1. In each figure, the X-axis direction indicates the longitudinal direction of the cooking device, the Y-axis direction indicates the front-rear direction, and the Z-axis direction indicates the height direction. Further, the positive direction of the X axis is the right side, and the negative direction is the left side.

  As shown in FIG. 1, the heating cooker 1 includes a main body 3 and a top plate 5 on which a container Cr is placed as an upper portion of the main body 3. In the container Cr, for example, a heated object Tc as a cooking target such as a stew is accommodated.

  Moreover, in the case of Embodiment 1, the heating cooker 1 is an induction heating cooker, Comprising: As shown in FIG. 1, below the container mounting area | region in the top plate 5, it cooks in the inside of the main body 3. Heating coils 7 </ b> A, 7 </ b> B, and 7 </ b> C are arranged as heating portions of the vessel 1. Ring-shaped markers 8A, 8B, and 8C indicating the container placement areas are printed on the top plate 5 above the corresponding heating coils 7A, 7B, and 7C, respectively. The heating coils 7A to 7C generate an induction magnetic field in order to heat the container Cr. The coil control unit 10 serving as a heating control unit supplies high-frequency current to the heating coils 7A to 7C to heat the container Cr. Moreover, the coil control part 10 controls the amount of heating from the heating coils 7A to 7C by controlling the amount of current flowing through the heating coils 7A to 7C.

  In addition, when viewed from above, light emitting portions 6A, 6B, and 6C that shine in a ring shape are arranged on the top plate 5 outside the heating coils 7A, 7B, and 7C, respectively. For example, the light emitting units 6A, 6B, and 6C emit light when current flows through the corresponding heating coils 7A, 7B, and 7C. Each of the light emitting units 6A to 6C includes, for example, an LED light emitting substrate.

  A plurality of operation input units 9 </ b> A, 9 </ b> B, 9 </ b> C for the user to operate each of the heating coils 7 </ b> A to 7 </ b> C are arranged on the front side of the top plate 5 of the heating cooker 1. The operation input units 9A to 9C may be touch keys or a touch panel, for example. The operation input unit 9A and the heating coil 7A, the operation input unit 9B and the heating coil 7B, and the operation input unit 9C and the heating coil 7C correspond to each other. In response to an operation instruction from the operation input unit 9A, the coil control unit 10 controls the start or stop of heating of the heating coil 7A. Moreover, according to the operation instruction of the operation input unit 9A, the coil control unit 10 adjusts the heating level of the heating coil 7A in, for example, four stages.

  Moreover, the main body 3 is provided with the alerting | reporting part 4 which alert | reports the information regarding the heating of heating coil 7A-7C. The notification unit 4 includes a display unit 11 and an audio output unit 15. The display part 11 is arrange | positioned at the front side of the top plate 5 of the heating cooker 1, and displays the heating level of heating coil 7A-7C. The display unit 11 is, for example, a black and white liquid crystal panel having a band shape extending in the longitudinal direction of the top plate 5, but may be a color liquid crystal panel. Moreover, the audio | voice output part 15 is arrange | positioned at the front side of the heating cooker 1, and outputs audio | voice guidance with respect to a user. The audio output unit 15 is, for example, a speaker.

  In addition, in order to set the heating by heating coil 7A-7C in detail, the setting part 13 is provided in the front side of the main body 3 of the heating cooker 1. FIG. The setting unit 13 can be inserted into and removed from the main body 3, and includes a setting key 13a for setting heating by the heating coils 7A to 7C in detail, and the setting contents and detailed states of the heating coils 7A to 7C. And a setting display unit 13b for displaying. The setting unit 13 sets the heating temperature, heating time, timer, and the like of the heating coils 7A to 7C.

  A range hood 17 is installed above the heating cooker 1. The range hood 17 sucks the air above the cooking device 1 through the hood portion 17a provided in the lower portion and exhausts it from the discharge port connected to the outside.

  The heating cooker 1 also includes a temperature detection module 19 that detects the temperature of the object to be heated Tc on the top plate 5 from above. The temperature detection module 19 is arrange | positioned in the position away from the top plate 5, for example, is arrange | positioned at the center part of the food | hood part 17a of the range hood 17 so that attachment or detachment is possible. Specifically, the temperature detection module 19 is attached with a magnet, an adhesive material, a clip, or the like.

  For wireless communication between the main body 3 and the temperature detection module 19, the main body 3 includes a first communication unit 21, and the temperature detection module 19 includes a second communication unit 23. The temperature information detected by the temperature detection module 19 is transmitted from the second communication unit 23 and received by the main body 3 by the first communication unit 21. The first communication unit 21 and the second communication unit 23 each have an antenna and are wirelessly connected by wireless communication such as Wi-Fi (registered trademark), Bluetooth (registered trademark), or BLE (Bluetooth Low Energy). ing. In addition, the main body 3 and the temperature detection module 19 may be connected by wire instead of providing the first communication unit 21 and the second communication unit 23.

  The heating cooker 1 includes a control unit 25 and a storage unit 27 inside the main body 3. The control unit 25 is a processing device such as a CPU or a microprocessor, for example, and is configured to perform various functions by executing programs stored in the storage unit 27 such as a ROM, a RAM, a hard disk, and an SSD. ing.

  The control unit 25 includes a temperature information processing unit 25a. The temperature information processing unit 25 a determines the state of the object to be heated Tc by image processing based on the temperature information of the thermal image transmitted from the temperature detection module 19. Examples of the state of the article to be heated Tc include a normal state, a boiling state, a spilling state, and a spilling state. When the temperature information processing unit 25a determines, for example, a spillage sign state as the state of the object to be heated Tc, the coil control unit 10 instructs to stop the heating control to the heating coils 7A to 7C. Thereby, the coil control part 10 can stop the heating from the heating coil to which heating coil 7A-7C corresponds, and can prevent that a spill occurs.

  The temperature detection module 19 includes a temperature detection unit 29, a control unit 31, a storage unit 33, and a power storage unit 35. The temperature detection unit 29 includes a temperature sensor 29a that detects the temperature distribution on the top plate 5 within the visual field range from above, and an amplification unit 29b that amplifies the detection signal of the temperature sensor 29a. The temperature sensor 29a is, for example, an infrared sensor or a thermal image camera. The thermal image detected by the temperature detection unit 29 includes information regarding the temperature distribution on the top plate 5. If the temperature sensor 29a is set in an appropriate shooting direction, the entire top plate 5 can be shot from above. In addition to the range hood 17, the temperature detection module 19 may be disposed on a ventilation fan, a duct, a ceiling, or a wall.

  The distance from the temperature sensor 29a to the top plate 5 is, for example, not less than 600 mm and not more than 2000 mm. The temperature sensor 29a has a number of pixels of 64 pixels or more arranged on a plane. As an example, the temperature sensor 29a in the first embodiment also has 64 pixels of 8 vertical pixels × 8 horizontal pixels.

  The control unit 31 is a processing device such as a CPU or a microprocessor, and is configured to perform various functions by executing programs stored in the storage unit 33 such as a ROM, a RAM, a hard disk, and an SSD. ing.

  The control unit 31 determines whether or not the temperature information acquired by the temperature detection unit 29 is equal to or higher than a predetermined threshold value, and a detection cycle setting unit 31a that sets a temperature detection cycle in the temperature detection unit 29. And a detected temperature determination unit 31c. The detection cycle setting unit 31a sets the detection cycle according to the temperature information detected by the temperature detection unit 29. For example, when the object to be heated Tc is water, if the temperature is lower than 60 ° C., for example, the possibility of occurrence of spilling is low, so the temperature information detection cycle is set long (for example, 3 to 5 seconds). Further, for example, when the temperature of the object to be heated Tc becomes 90 ° C. or higher, the detection period is reset to, for example, 1 sec or less because the time until the boiled state occurs and the spill occurs is relatively short. Thus, the detection cycle is set according to the temperature state of the object to be heated Tc.

  The power storage unit 35 supplies power to the temperature detection unit 29, the control unit 31, the storage unit 33, and the second communication unit 23, respectively. The power storage unit 35 is a battery, for example.

  Next, the flow of changing the temperature detection cycle will be described with reference to FIG. First, when a heating instruction is input to any of the heating coils 7A to 7C in any of the operation input units 9A to 9C of the main body 3, temperature information acquisition is performed from the control unit 25 to the control unit 31 of the temperature detection module 19. A request is made. At this time, since the detection cycle setting unit 31a is immediately after energization of the heating coil, a detection cycle of 3 to 5 seconds is set. Thereby, the temperature sensor 29a acquires the temperature information on the top plate 5 in step S11. The amplifying unit 29b amplifies the acquired temperature information after A / D conversion at a set detection cycle.

  In step S <b> 13, the acquired temperature information is transmitted from the second communication unit 23 to the first communication unit 21 and received by the temperature information processing unit 25 a of the control unit 25. The temperature information processing unit 25a determines the state of the object to be heated Tc based on the received temperature information.

  In step S14, the detected temperature determination unit 31c of the control unit 31 determines whether or not the absolute value of the detected temperature in the specific region corresponding to the region of the heating coils 7A to 7C in the temperature information is equal to or greater than a predetermined threshold value. judge. For example, as shown in FIG. 6, if the absolute value of the detected temperature TA is less than the threshold value Tp1, the process returns to step S11 after elapse of the detection period without changing the detection period as in step 14 No. .

  If the absolute value of the detected temperature TA is greater than or equal to the threshold value Tp1, as in Yes in step S14, the detection cycle setting unit 31a resets the detection cycle. For example, the detection cycle setting unit 31a changes the detection cycle to be shorter. The shortened detection cycle is, for example, 1 sec or less. A plurality of thresholds may be prepared, and the detection cycle may be shortened step by step.

  The heating cooker 1 according to the first embodiment includes a main body 3 and a temperature detection module 19. The main body 3 includes a top plate 5 on which a container Cr that houses a heated object Tc that is a cooked product, a heating coil 7A to 7C that heats the container Cr, and a coil that controls the heating output of the heating coils 7A to 7C. And a control unit 10. The temperature detection module 19 includes a temperature detection unit 29 that periodically detects the temperature distribution on the top plate 5 from above the top plate 5. The main body 3 further includes a first communication unit 21 that performs wireless communication with the temperature detection module 19. The temperature detection module 19 includes a second communication unit 23 that performs wireless communication with the main body 3. The temperature information detected by the temperature detection unit 29 is transmitted from the second communication unit 23 to the first communication unit 21. The coil control unit 10 controls the heating output in accordance with the sent temperature information. A detection cycle setting unit 31 a that sets a temperature detection cycle in the temperature detection unit 29 according to the temperature information detected by the temperature detection unit 29 is provided. With these configurations, the temperature detection cycle can be set according to the heating state of the object to be heated, so that the power consumption of the temperature detection module 19 can be reduced. For example, in a state where the temperature of the object to be heated is low, setting the temperature detection cycle longer may reduce the number of times that the temperature detection module 19 acquires and amplifies the temperature information and transmits the temperature information by wireless communication. Therefore, the power consumption of the temperature detection module 19 can be reduced.

  Further, instead of changing the temperature detection cycle according to the detected absolute value of the temperature, the detection cycle setting unit 31a may change the temperature detection cycle according to the fluctuation value of the detected temperature per unit time. For example, the temperature detection cycle may be changed according to the slope Tp2 of the fluctuation curve of the detected temperature TA shown in FIG. Further, the detection cycle setting unit 31a may shorten the cycle of temperature detection when the variation value per unit time increases from a predetermined variation value.

  Further, the detection cycle setting unit 31 a may change the temperature detection cycle according to an instruction from the control unit 25 of the main body 3. For example, the control unit 25 may instruct the temperature detection module 19 to set a cycle according to an input instruction from the operation input units 9A to 9C or the setting key 13a by the user. At this time, for example, the detection cycle setting unit 31a newly sets a cycle shorter than the cycle before the change so that the temperature detection unit 29 detects the temperature more than the cycle before the change by the detection cycle setting unit 31a. The period after the change is shorter. Therefore, the temperature condition on the top plate 5 can be recognized in the short term.

  Moreover, the cooking device 1 may include a human body detection unit that detects the presence of a human body, and the detection cycle setting unit 31a may change the cycle of temperature detection when the human body detection unit detects a human body. The human body detection unit may be configured as a proximity sensor on the front side of the main body 3, or may be configured as the temperature information processing unit 25 a of the control unit 25. The temperature information processing unit 25a may detect, as a human body, a region that moves in time series in the temperature region of 35 ° C. in the temperature information sent from the temperature detection module 19. When the human body detection unit detects the presence of a human body in the vicinity of the main body 3, the control unit 25 instructs the control unit 31 of the temperature detection module 19 to further delay the temperature detection cycle when the temperature of the object to be heated Tc is low. To do. Thereby, the power consumption of the temperature detection module 19 can be further reduced. When the temperature of the object to be heated Tc is high, if the human body detection unit detects the presence of a human body in the vicinity of the main body 3, the control unit 25 causes the control unit 31 of the temperature detection module 19 to further shorten the temperature detection cycle. May be instructed.

  The present disclosure is not limited to the above embodiment, and can be modified as follows.

  (1) In the above embodiment, the container Cr in which the object to be heated Tc is stored is detected from above by the temperature detection module 19, but is not limited thereto. The temperature of the container Cr may be detected from the lower side of the top plate 5 in addition to the upper side. For example, as shown in FIG. 7, a temperature sensor 61 that detects the temperature of the bottom of the container Cr placed on the heating coils 7 </ b> A to 7 </ b> C is disposed below the top plate 5. The temperature sensor 61 may be disposed above each of the heating coils 7 </ b> A to 7 </ b> C, or only one temperature sensor 61 may be disposed in the central portion of the top plate 5.

  When the viscosity of the object to be heated Tc accommodated in the container Cr is high, for example, when the object to be heated Tc is corn soup, a temperature difference occurs between the upper part and the lower part of the object to be heated Tc in the container Cr. In FIG. 8, as an example, the temperature curve TN of the object Tc to be heated in the container Cr detected by the temperature sensor 29a of the temperature detection module 19 and the container Cr detected by the temperature sensor 61 of the main body 3 from below. The bottom temperature curve TB is shown.

  When the temperature difference between the temperature at the bottom of the container Cr and the temperature at the top of the object to be heated Tc is large, even if the detected absolute temperature is 100 ° C. or less, spillage may occur. Therefore, even when the temperature detected by the temperature detection unit 29 is low, if the temperature difference from the temperature detected by the temperature sensor 61 exceeds a predetermined threshold, the control unit 25 of the main body 3 controls the temperature detection module 19. The detection cycle setting unit 31a is instructed to set a cycle shorter than usual.

  As a result, even if the object to be heated Tc has a high viscosity, if the temperature difference between the temperature at the bottom of the container Cr and the temperature at the top of the object to be heated Tc is large, the temperature detection cycle from above is changed short. Therefore, the temperature information processing unit 25a can detect a sign of spillage, and spillage can be prevented.

  (2) In the above embodiment, the heating cooker 1 is an induction heating cooker that induction-heats the container Cr using the heating coils 7A to 7C, but is not limited thereto. For example, the cooking device 1 may be a gas cooking device. In the case of a gas cooker, the container Cr is placed on the five virtues as a container placement portion provided on the top plate 5 of the main body 3, and is heated from below by a gas burner as a heating portion.

  In addition, it can be made to show the effect which each has by combining suitably any embodiment among the said various embodiment and modifications.

  Although the present disclosure has been fully described in connection with preferred embodiments with reference to the accompanying drawings, various variations and modifications will be apparent to those skilled in the art. Such changes and modifications are to be understood as included within the scope of the present disclosure as set forth in the appended claims. In addition, combinations of elements and changes in the order in each embodiment can be realized without departing from the scope and spirit of the present disclosure.

DESCRIPTION OF SYMBOLS 1 Heating cooker 3 Main body 4 Information part 5 Top plate 6A, 6B, 6C Light emission part 7A, 7B, 7C Heating coil 8A, 8B, 8C Marker 9A, 9B, 9C Operation input part 10 Coil control part 11 Display part 13 Setting part 13a setting key 13b setting display section 15 audio output section 17 range hood 17a hood section 19 temperature detection module 20 temperature detection section 20a temperature sensor 20b amplifying section 21 first communication section
23 Second Communication Department
25 control unit 25a temperature information processing unit 27 storage unit 29 temperature detection unit 29a temperature sensor 29b amplification unit 31 control unit 31a detection cycle setting unit 31c detection temperature determination unit 33 storage unit 35 power storage unit 61 temperature sensor Cr container Tc heated object Tp1 threshold TA detection temperature TB, TN temperature curve

Claims (11)

A main body provided with a top plate for placing a container for containing a food, a heating unit for heating the container, and a heating control unit for controlling the heating output of the heating unit,
A temperature detection module including a temperature detection unit that periodically detects a temperature distribution on the top plate from above the top plate;
The main body includes a first communication unit that performs wireless communication with the temperature detection module,
The temperature detection module includes a second communication unit that performs wireless communication with the main body,
The temperature information detected by the temperature detection unit is transmitted from the second communication unit to the first communication unit,
The heating control unit controls the heating output according to the temperature information sent,
A detection cycle setting unit that sets a cycle of temperature detection in the temperature detection unit according to temperature information detected by the temperature detection unit;
Cooking cooker. The detection cycle setting unit sets a temperature detection cycle according to an absolute value of the detected temperature.
The cooking device according to claim 1. The detection cycle setting unit shortens the cycle of temperature detection when the absolute value of the temperature detected by the temperature detection unit becomes higher than a predetermined value.
The cooking device according to claim 2. The detection cycle setting unit sets a cycle of temperature detection according to a fluctuation value per unit time of the detected temperature.
The cooking device according to claim 1. The detection cycle setting unit shortens the cycle of temperature detection at the time when the fluctuation value per unit time of the temperature detected by the temperature detection unit increases from a predetermined fluctuation value.
The cooking device according to claim 4. The detection cycle setting unit changes a temperature detection cycle according to an instruction from the main body,
The cooking device according to claim 1. A human body detection unit that detects the presence of a human body,
The detection cycle setting unit changes a cycle of temperature detection when the human body detection unit detects a human body,
The cooking device according to claim 1. The cycle in which the temperature detection unit detects the temperature is shorter in the cycle after the change than the cycle before the change by the detection cycle setting unit,
The cooking device according to claim 6 or 7. The temperature detection module includes a power storage unit,
The power storage unit supplies power to the temperature detection unit and the second communication unit.
The cooking device according to any one of claims 1 to 8. The temperature detection unit has a plurality of temperature detection elements arranged in an array.
The cooking device according to any one of claims 1 to 9. The heating unit includes a heating coil that generates an induction magnetic field to heat the container,
The heating controller supplies a high-frequency current to the heating coil to heat the container;
The cooking device according to any one of claims 1 to 10.

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