JP2020041777A - Range hood and method for controlling range hood - Google Patents

Abstract

To provide a range hood that can precisely control an air volume in accordance with positions and the number of heat sources.SOLUTION: A range hood includes: a compound-eye temperature sensor 300 for detecting temperature distribution at a top surface of a cooker; and a control unit 136 for determining positions and the number of heat sources included in the cooker from the temperature distribution at the top surface.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a range hood and a method for controlling a range hood.

  2. Description of the Related Art Conventionally, there is a range hood with an automatic operation function that detects a temperature of a cooking appliance top surface by a surface temperature detection unit provided on the hood and determines an air volume based on the detected temperature (Patent Document 1).

JP 2012-241950 A

  Such a range hood can estimate the approximate position and number of heat sources (burners and output units) based on the temperature detected by the surface temperature detection unit. However, since the accuracy of the surface temperature detection unit is limited, accurate Information could not be obtained, and more precise airflow control could not be performed.

  For this reason, oil smoke generated from cooking dishes and utensils during cooking may not be accurately collected and exhausted, and odor, smoke, and oil may be diffused indoors.

  Therefore, an object of the present invention is to provide a range hood and a method of controlling the range hood that can perform precise air volume control according to the position and number of heat sources.

  In order to achieve the above object, a range hood according to the present invention has a compound eye temperature sensor for detecting a temperature distribution on a top surface of a cooking appliance, and a control for specifying the position and the number of heat sources included in the cooking appliance from the temperature distribution on the ceiling surface. And a part.

  In order to achieve the above object, the range hood control method of the present invention provides an exhaust fan capable of changing an exhaust air volume, the position and number of heat sources existing on the top surface of the cooker, and the position and number of heat sources. A method of controlling a range hood having a storage unit for storing a corresponding threshold temperature and a temperature sensor for detecting a temperature of a top surface of a cooker, wherein the storage unit previously corresponds to the position and number of various heat sources. Storing the threshold temperature, storing the range hood above the cooker, storing the position and number of heat sources present on the top surface of the cooker in the storage unit before starting operation, and Controlling the exhaust air volume of the exhaust fan according to the temperature detected by the temperature sensor and the threshold temperature after the operation is started.

  ADVANTAGE OF THE INVENTION According to this invention, since the position and the number of heat sources of the cooker in which a range hood is installed can be specified, more precise air volume control can be performed.

It is a front view at the time of installing the range hood of this embodiment in a kitchen. It is a side view at the time of installing the range hood of this embodiment in a kitchen. It is a front view of the operation panel with which the range hood of this embodiment is provided. It is a block diagram of a control system of the range hood of the present embodiment. It is a figure which shows typically the detection state of the temperature of the top surface of a cooking appliance by a temperature sensor. It is a figure which shows typically the detection state of the temperature of the top surface of a cooking appliance by the temperature sensor at the time of cooking using two heat sources on the front side. It is the figure which three-dimensionally represented the detection state of the temperature of the top surface of the cooking appliance by the temperature sensor when cooking is performed using two heat sources on the front side. It is a figure which shows typically the detection state of the temperature of the top surface of a cooking appliance by the temperature sensor at the time of cooking using the back side heat source. It is a figure which shows typically the detection state of the temperature of the top surface of a cooking appliance by the temperature sensor at the time of cooking using the grill of a cooking appliance. It is the figure which expressed the detection state of the temperature of the top surface of the cooking appliance by the temperature sensor when cooking using the grill of the cooking appliance in three dimensions. It is a figure which shows typically the gas threshold temperature applied to the cooking device for gas. It is a figure which shows the threshold temperature for IH applied to the cooking device for IH typically. It is a flowchart which shows the control method of the initial setting of the range hood of this embodiment. It is a flowchart following FIG. It is a figure which shows typically the detection state of the temperature of the top surface of a cooking appliance by the temperature sensor after igniting one burner. It is a figure showing an example of a template for specifying the position and the number of heat sources of a cooking appliance. It is a figure showing an example of other templates for specifying the position and the number of heat sources of a cooking appliance. It is a figure which shows an example of the position information of the heat source registered beforehand according to the separation distance of a cooker and a range hood in order to identify the position of the heat source of a cooker. It is a figure showing another example of the position information on the heat source registered beforehand according to the separation distance of the cooker and the range hood in order to specify the position of the heat source of the cooking appliance. It is a figure showing another example of the position information on the heat source registered beforehand according to the separation distance of the cooker and the range hood in order to specify the position of the heat source of the cooking appliance. It is a flowchart which shows the operation procedure of the range hood of this embodiment. It is a figure which shows typically the difference of the threshold temperature applied to the area | region of the grill outlet of a cooking appliance, and the threshold temperature applied to another area | region. It is a figure which shows an example of the mode of the exhaust air volume selected by the number of heat sources used by the cooking appliance, and the use of the grill. It is a figure which shows the type of range hood different from the range hood of this embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to only the following embodiments. Each drawing is exaggerated for convenience of explanation. Therefore, the dimensional ratio of each component in each drawing is different from the actual one. In the drawings, the same elements will be denoted by the same reference symbols, without redundant description in the specification.

(Composition of range hood)
FIG. 1 is a front view when the range hood of the present embodiment is installed in a kitchen. FIG. 2 is a side view when the range hood of the present embodiment is installed in a kitchen.

  As shown in FIG. 1 and FIG. 2, the range hood 100 of the present embodiment is installed on a cooker 200. Range hood 100 sucks in odors and oily smokes including odor, smoke, oil, etc. generated during cooking of cooker 200 and exhausts them to the outside. The illustrated cooker 200 is a cooker for gas, and has three burners (hereinafter simply referred to as burners 210) and one grill outlet 220 on the top surface 500 as heat sources. Thus, the heat source is a burner 210 for a gas cooker and an IH cooking heater (also referred to as an IH heater or simply a heater) for an IH cooker. In addition, when a grill is provided in any of the gas and IH cookers, the grill outlet 220 is also a heat source existing on the top surface 500. Therefore, in this specification, the term “heat source” includes the burner 210 or the heater and the grill outlet 220.

  Range hood 100 has a temperature sensor 300 that detects the temperature of top surface 500 of cooker 200 on the lower surface on the front side on the left side of the center. The temperature sensor 300 detects the temperature of the area shown by the dotted line in the figure. The temperature sensor 300 is, for example, a compound-eye temperature sensor having a plurality of pixels so that the temperatures of 64 8 × 8 regions can be separately detected. Therefore, temperature sensor 300 can detect the temperature of top surface 500 of cooker 200 for each of the 64 regions. In the present embodiment, in order to facilitate understanding of the invention, a compound eye temperature sensor capable of separately detecting the temperatures of 64 8 × 8 regions has been described, but for example, 256 × 16 × 16 sensors are provided. A compound eye temperature sensor that can separately detect the temperature of the region may be used. Further, a compound-eye temperature sensor that can separately detect the temperature of more regions may be used. As the compound eye temperature sensor, for example, a compound eye type infrared sensor can be exemplified.

  Range hood 100 is provided with an exhaust unit 110 at an upper portion thereof. The exhaust unit 110 exhausts odor and oily smoke from the cooking device 200. The exhaust part 110 is provided with an intake port 112 for sucking oil smoke from the cooking device 200, an exhaust port 114 communicating with the outside, and an oil smoke sucked from the intake port 112 into a passage connecting the intake port 112 and the exhaust port 114 to the exhaust port 114. An exhaust fan 116 for exhausting air is provided. The exhaust fan 116 is driven by a fan motor (not shown).

  Range hood 100 includes an operation panel 120 for instructing the operation of range hood 100 on an upper front side thereof.

  FIG. 3 is a front view of the operation panel 120 included in the range hood 100 of the present embodiment. The operation panel 120 includes an operation switch 121, an air volume switch 122, an automatic air volume switch 123, a timer switch 124, a lighting switch 125, and a constant ventilation switch 126 as switches used for normal operation. The operation switch 121 operates the range hood 100. The air volume switch 122 can manually change the exhaust air volume of the exhaust fan 116 to low, medium, or high. The automatic air volume switch 123 sets an automatic mode in which the exhaust air volume of the exhaust fan 116 is automatically switched according to the temperature of the top surface 500 of the cooking device 200 detected by the temperature sensor 300. The timer switch 124 sets the time for rotating the exhaust fan 116 after cooking is completed. The lighting switch 125 turns on / off an LED bulb that illuminates the upper surface of the cooking device 200. The constant ventilation switch 126 operates / stops the constant ventilation by manually rotating / stopping the exhaust fan 116.

  Further, the operation panel 120 can instruct the range hood to perform an initial setting. By pressing a plurality of switches arranged on the operation panel 120 at the same time, an initial setting mode (also called a service mode, a maintenance mode, or the like) is set. For example, the operation switch 121 and the constant ventilation switch 126 are simultaneously pressed. In the initial setting mode, the heat sources provided in the cooking appliance 200 are sequentially radiated by a control method described later, and the position and the number of the heating sources provided in the cooking appliance 200 are determined from the temperature distribution of the top surface 500 detected by the temperature sensor 300 at that time. Is specified. The position and the number of the heat sources are stored in the storage unit 134 (described later). The type of the heat source is stored by the gas / IH selection switch 132 (see FIG. 4) (details will be described later). The plurality of switches entering the initial setting mode may be a combination of the above switches, a combination of other switches, or a long press of one switch. Such a combination of switches and a long press are described in an installation manual (also referred to as an installation procedure manual or a service manual). The installation manual includes the installer of the range hood (installer, initial setting person (including a case where the user of the range hood makes an initial setting, a case where a person other than the user makes an initial setting), and the like. ), The installer performs initial settings according to the procedure.

  FIG. 4 is a block diagram of a control system of the range hood 100 of the present embodiment. Range hood 100 has exhaust fan 116, fan motor 118, operation panel 120, control device 130, and temperature sensor 300. The exhaust fan 116, the fan motor 118, and the operation panel 120 are as described above. Control device 130 is incorporated in range hood 100.

  The control device 130 includes a gas / IH selection switch 132, a storage unit 134, and a control unit 136. The gas / IH selection switch 132 is a selection switch for selecting whether the type of cooker in the kitchen in which the range hood 100 is installed is a gas cooker or an IH cooker. The gas / IH selection switch 132 is operated by the installer when the range hood 100 is installed above the cooker.

  The storage unit 134 stores the type, position, and number of heat sources existing on the top surface 500 of the cooker. The type of heat source indicates whether the heat source is a burner 210 or an IH heater (not shown). Here, it is set by the gas / IH selection switch 132 and stored in the storage unit 134. The position of the heat source is a coordinate value when the top surface 500 is in a two-dimensional coordinate system. The two-dimensional coordinate system here is the same as a divided detection area of the temperature sensor 300 described later. Further, the storage unit 134 stores the threshold temperature corresponding to the type, position, and number of the stored heat sources.

  The threshold temperature is a criterion for selecting the exhaust air volume of the exhaust unit 110, and is stored in association with each temperature area of the top surface 500 detected by the temperature sensor 300. The threshold temperature stores both the gas threshold temperature used for the gas cooker 200, the IH threshold temperature used for the IH cooker 200, and the grill outlet temperature. The threshold temperature stored in the storage unit 134 is smaller for the IH cooker than for the gas cooker. The threshold temperature for the grill outlet is even lower than the threshold temperature for the IH cooker. That is, the temperature at which the amount of exhaust air is the same is the threshold temperature for the gas cooker> the threshold temperature for the IH cooker> the threshold temperature for the grill outlet. Further, it is preferable that the threshold temperature for the grill outlet is also stored in the grill for the gas cooker 200 and the threshold temperature for the grill outlet different for the IH cooker 200. This is because when the heat source in the grill is a gas burner, the amount of heat radiated from the outlet is larger than in the case of a grill using an electric heater or an IH heater. In this case, the threshold temperature for the grill outlet is gas> IH.

  The storage unit 134 further stores the position and the number of heat sources included in the cooker 200 for each model information of the cooker 200. In addition, the position and the number of heat sources included in the cooker 200 are stored for each model of the cooker 200 and each model of the cooker 200.

  When the initial setting is instructed by the operation panel 120 before the operation is started, the control unit 136 radiates the heat sources of the cooking device 200 in order, and performs the cooking based on the temperature distribution of the top surface 500 detected by the temperature sensor 300 at that time. The position of the heat source provided in the vessel 200 is specified. When the position and the number of the heat sources are specified, a specification completion process is performed. The specification completion processing is any of voice guidance, lighting and extinguishing of a light, blinking of a light, sounding of a completion sound, and turning off of a heat source to notify that the specification of the position and the number of the heat sources is completed.

  Further, the control unit 136 retrieves the position and number of the heat source of the cooking device 200 corresponding to the model information input from the operation panel 120 from the storage unit 134 before starting the operation, and the position and the number of the heat source included in the cooking device 200. To identify. When cooker 200 corresponding to the model information input from operation panel 120 is not stored in storage unit 134, control unit 136 determines the position and number of heat sources input from operation panel 120, Specify the position and number of heat sources to be provided. The control unit 136 extracts from the storage unit 134 the position and the number of heat sources of the cooking appliance 200 corresponding to the model of the cooking appliance 200 selected from the operation panel 120, and specifies the position and the number of the heat sources included in the cooking appliance 200. Further, the control unit 136 recognizes the position and the number of the heat sources included in the cooking appliance 200 from the temperature distribution of the top surface 500, and the position and the number of the recognized heat sources are stored in the storage unit 134 with the position and the number of the heat sources. By collation, a model having the position and the number of heat sources closest to the recognized position of the heat source is specified as a model of the cooking device 200.

  Then, after starting the operation, the control unit 136 takes out the threshold temperature corresponding to the specified cooker from the storage unit 134, compares the temperature with the temperature of the top surface 500 detected by the temperature sensor 300, and sets the detected temperature to the threshold temperature. For example, the exhaust air volume of the exhaust unit 110 corresponding to the threshold temperature is selected.

(Operation of each part constituting range hood 100)
Next, the operation of each part of the range hood 100 will be described in detail.

(Temperature sensor 300)
FIG. 5 is a diagram schematically illustrating a state in which the temperature of the top surface 500 of the cooking device 200 is detected by the temperature sensor 300.

  The temperature sensor 300 is a compound-eye temperature sensor 300, and can detect the entire temperature of the top surface 500 as a two-dimensional area. Since the temperature sensor 300 is attached to the lower surface of the range hood 100 as described above, as shown in FIG. 5, for example, the temperature of the top surface 500 of the cooker 200 is divided into 8 × 8 64 areas. (Tij (i = 1 to 8, j = 1 to 8)). Therefore, Tij indicating each area is a coordinate value indicating each of the 64 areas T11 to T88.

  FIG. 6 is a diagram schematically illustrating a state in which the temperature sensor 300 detects the temperature of the top surface 500 of the cooker 200 when cooking is performed using the two burners 210A and 210B on the front side. In FIG. 6, the detection temperature is higher in a region with a darker fill color in accordance with the color depth. FIG. 7 is a diagram three-dimensionally illustrating a detection state of the temperature of the top surface 500 of the cooking appliance 200 by the temperature sensor 300 when cooking is performed using the two burners 210A and 210B on the front side. is there. In FIG. 7, in a region where the height of the three-dimensional figure is high, the detected temperature is high in accordance with the height. From these figures, it can be seen that the detected temperatures of the regions T22 to T27, T32 to T37, and T42 to T47 of the temperature sensor 300 are higher than the detected temperatures of the other regions.

  FIG. 8 is a diagram schematically illustrating a state where the temperature of the top surface 500 of the cooking appliance 200 is detected by the temperature sensor 300 when cooking is performed using the burner 210C on the back side. In FIG. 8 as well, the detection temperature is higher in a region with a darker fill color in accordance with the color depth. Since the rear side burner 210C is smaller in size and smaller in thermal power than the two front side burners 210A and 210B, the detected temperature is lower than that in FIG. From this figure, it can be seen that the detected temperatures of the regions of T43, T44, T53, T54, T63, and T64 of the temperature sensor 300 are higher than the detected temperatures of the other regions.

  FIG. 9 is a diagram schematically illustrating a state where the temperature of the top surface 500 of the cooking appliance 200 is detected by the temperature sensor 300 when cooking is performed using the grill of the cooking appliance 200. Also in FIG. 9, the region where the fill color is dark is a region where the detected temperature is higher than other regions. FIG. 10 is a diagram three-dimensionally illustrating a state in which the temperature of the top surface 500 of the cooking appliance 200 is detected by the temperature sensor 300 when cooking is performed using the grill of the cooking appliance 200. In FIG. 10, a region where the height of the three-dimensional figure is high has a higher detected temperature according to the height. From this figure, it can be seen that the detected temperature in the region from T73 to T76 of the temperature sensor 300 is higher than the detected temperature in other regions.

  As shown in FIGS. 6 to 10, the temperature sensor 300 can detect the temperature of the top surface 500 of all the regions for each region, and when cooking using the burners 210A and 210B, The temperature of only the region corresponding to the burner 210A and the region corresponding to the burner 210B of the temperature sensor 300 increases. In addition, when cooking using the burner 210C, the temperature of only the region of the temperature sensor 300 corresponding to the burner 210C increases. Furthermore, when cooking is performed using the grill of cooker 200, the temperature of only the region corresponding to grill outlet 220 of temperature sensor 300 increases. Of course, when cooking is performed using the burner 210A, the burner 210B, the burner 210C, and the grill, the temperature of the region corresponding to the burner 210A, the burner 210B, the burner 210C, and the grill outlet 220 of the temperature sensor 300 is reduced. Get higher. Therefore, by looking at the temperature distribution on the top surface 500, it is possible to easily specify which heat source of the burners 210A to 210C is radiating heat, whether the grill of the cooker 200 is used, and the like.

  FIG. 11 is a diagram schematically illustrating a gas threshold temperature applied to the gas cooking device 200. The threshold temperature corresponds to all regions of the temperature of the top surface 500 detected by the temperature sensor 300. For example, when the temperature sensor 300 detects the temperature of the top surface 500 distributed as shown in FIGS. 6 and 7 while cooking with the gas cooker 200, the temperature of the top surface 500 in the region of Tij is detected. And the threshold temperature of the region of Gij. For example, the temperature of the top surface 500 of the region T11 is compared with the threshold temperature of the region G11, and the temperature of the top surface 500 of the region T12 is compared with the threshold temperature of the region G12. Until the comparison of the temperature with the threshold temperature of the area G88 is completed, the processing is performed on all 64 areas.

  FIG. 12 is a diagram schematically showing an IH threshold temperature applied to the IH cooker 200. This threshold temperature corresponds to all regions of the temperature of the top surface 500 detected by the temperature sensor 300, similarly to the gas threshold temperature. For example, when the temperature sensor 300 detects the temperature of the top surface 500 distributed as shown in FIGS. 6 and 7 while cooking with the IH cooker 200, the temperature of the top surface 500 in the region of Tij is detected. And the threshold temperature of the area of Cij. For example, the temperature of the top surface 500 of the region T11 is compared with the threshold temperature of the region C11, and the temperature of the top surface 500 of the region T12 is compared with the threshold temperature of the region C12. Until the comparison of the temperature with the threshold temperature of the region C88 is completed, the process is performed for all 64 regions.

(Initial setting example 1)
Next, the initial setting operation will be described. Here, as Initial Setting Example 1, a description will be given of a control method for sequentially igniting (radiating heat) the heat sources and specifying the positions of the heat sources by the compound-eye temperature sensor 300.

  Here, the description will be made on the assumption that the top surface 500 has three burners 210 and one grill outlet. 13 and 14 are flowcharts showing the procedure of the control method at the time of initial setting of the range hood 100 of the present embodiment. This flowchart is processed by the control unit 136.

  First, as described above, when a plurality of predetermined switches on the operation panel 120 are simultaneously pressed, an initial setting mode is entered. At this stage (when the range hood is installed), the gas / IH selection switch 132 is used to select whether the range is gas or IH. Whether the gas is selected or the IH is selected is stored in the storage unit 134. (If the gas / IH selection switch 132 is an electronic switch, the control unit is turned on according to the selected contents after the range hood is turned on. It is stored in the storage unit 134 by 136. Further, when the gas / IH selection switch 132 is a physical changeover switch, whether the gas or IH is stored depending on the direction of the switch after the range hood is turned on. Stored in the unit 134).

  After entering the initial setting mode, the control unit 136 turns on the temperature sensor 300 (S11). Subsequently, when the storage unit 134 stores the range as a gas range in the storage unit 134, the control unit 136 outputs a guide for prompting the ignition of one burner 210. Alternatively, when the range is stored in the storage unit 134 as the IH range, guidance for prompting the ignition of one IH heater is output (hereinafter, the parentheses indicate the case where the IH heater is selected) (S12). . This guidance may be, for example, a predetermined length of beep sound (beep sound), the number of intermittent times, or the like, or blinking light emission of lighting. The description of the guidance and the corresponding sound duration and intermittent frequency, or the number of times the light blinks and turn on / off, etc., are described in the installation manual. Also, the corresponding voice guidance may be stored in the storage unit 134 and played (the same applies to guidance and error output in each step described later).

  Upon receiving the guidance in S12, the installer of the range hood ignites one burner 210 (heater) (S13).

  Subsequently, the control unit 136 determines whether or not the position of the burner 210 (heater) has been specified by the temperature sensor 300 (S14). Here, if the position of the burner 210 (heater) can be specified (S14), the position is stored in the storage unit 134 as the position of one burner 210 (heater), and the number stored in the storage unit 134 is incremented by one. (S15). At this time, it is also stored that the stored position is the burner 210 (heater) as the heat source type information. Subsequently, the control unit 136 outputs a guidance of detection completion (S16).

  Here, the detection state of the temperature of the top surface 500 of the cooking appliance 200 by the temperature sensor 300 after igniting one burner 210 in S13 will be described. FIG. 15 is a diagram schematically illustrating a state in which the temperature of the top surface 500 of the cooking appliance 200 is detected by the temperature sensor 300 after one burner 210 is ignited.

  FIG. 15 shows a state in which the burner 210A is ignited. In this state, the temperature sensor 300 detects the highest temperature at the position of the region TIJ = T33 (in the figure, the darker the color, the higher the detected temperature). Accordingly, the control unit 136 stores the burner 210 at the position of the region TIJ = T33 in the storage unit 134 in S15, and adds and stores the number by one.

  On the other hand, if the position of the burner 210 (heater) cannot be specified in S14, the control unit 136 outputs an error (S31). Thereafter, the installer extinguishes the burner 210 (heater) (S32). Thereafter, the process ends.

  Returning to FIG. 13, the description of the procedure will be continued. After S16, upon receiving the notification of the completion of the detection, the installer extinguishes the burner 210 (heater) (S17).

  Subsequently, the installer inputs the presence / absence of an unset burner 210 and the presence / absence of a grill (S18). It is described in an installation manual or the like that the input can also input the presence / absence of the burner 210 and the presence / absence of the grill by pressing any switch in the operation panel 120. For example, a long press (for example, about 3 seconds) of the air volume switch 122 has an unset burner (heater), and a long press of the air volume automatic switch 123 (for example, about 3 seconds) has a grill (at this time, there is no unset burner (heater)). By pressing and holding the constant ventilation switch 126 (for example, for about 3 seconds), there is no burner (heater) and no grill. Of course, such a switch operation may be any combination.

  Subsequently, the control unit 136 determines whether there is an unset burner 210 (heater) from the input in S18 (S19). Here, if there is an unset burner 210 (heater) (S19: YES), the process returns to S12 and the process is continued. By continuing the process after returning to S12, the number of burners 210 (heaters) is stored together with the positions of the second and third burners 210 (heaters).

  On the other hand, if there is no unset burner 210 (heater) (S19: NO), the control unit 136 determines whether there is a grill from the input of S18 (S20). If there is no grill (S: NO), the process ends.

  On the other hand, if there is a grill (S20: YES), control unit 136 outputs a guide for grill ignition (S21). Thereafter, the installer ignites the grill (S22). When the grill is ignited, the inside of the grill is exhausted from the grill outlet 220 and radiated from the top surface 500.

  Subsequently, the control unit 136 determines whether or not the position of the grill outlet 220 has been specified by the temperature sensor 300 (S23). Here, if the position of the grill outlet 220 can be specified (S23: YES), the position is stored in the storage unit 134 as the position of the grill outlet 220, and the number is added by one (S24). At this time, it is also stored that the stored position is the grill outlet 220 as the heat source type information.

  The number of heat sources is stored as the number of heat sources without dividing the burner 210 (heater) and the grill outlet 220. However, the number in S15 may be separately stored as the number of burners 210 (heaters), and the number in S24 may be separately stored as the number of grill outlets 220 (usually one).

  Subsequently, the control unit 136 outputs a guidance of completion of the detection (S25).

  Although not shown, the position of the grill outlet 220 is also stored in the storage unit 134 assuming that the grill outlet 220 is located in the region Tij detected by the temperature sensor 300 at the time of S23, as described with reference to FIG. Will do.

  Thereafter, the installer receiving the guidance in S25 extinguishes the grill (S26), the control unit 136 turns off the temperature sensor 300 (S26), and ends the processing.

  On the other hand, when the position of the grill outlet 220 cannot be specified in S23, the control unit 136 outputs an error (S34). Thereafter, the installer extinguishes the grill (S35). Thereafter, the process ends.

  As described above, the total number of burners 210 (heaters) and grill outlets 220 as well as the positions of burners 210 (heaters) and grill outlets 220 are stored as the number of heat sources.

(Initial setting example 2)
Next, as Initial Setting Example 2, a control method for specifying the position of the heat source using the detected temperature distribution of the top surface 500 and the template will be described.

  FIG. 16 is a diagram illustrating an example of the template 140 for specifying the position and the number of heat sources of the cooking device 200. As shown in FIG. 5, the template 140 is applied to a cooker 200 having three burners 210 and a grill. FIG. 17 is a diagram showing another example of the template 140 for specifying the position and the number of heat sources of the cooking device 200. This template 150 is applied to the cooker 200 having two burners 210 and a grill.

  These templates 140 and 150 are stored in the storage unit 134 of the control unit 136. The templates 140 and 150 may be stored in the storage unit 134 of an external server instead of the storage unit 134 of the control unit 136. Various types of cookers 200 are sold by various manufacturers. Therefore, it is preferable to store the templates of all types of cookers 200 currently on the market.

  It is preferable that this template be selectable by the manufacturer name and model number of the cooker 200 when the range hood 100 is installed on site. As a specific selection pattern, for example, although not shown, the setting is performed using a setting computer (for example, a smartphone, a tablet, a notebook computer, or another dedicated terminal) connected to the control unit 136 of the range hood. Thus, the manufacturer and model number of the cooking device 200 can be input using the keyboard and mouse of the setting computer. The input model number is transmitted to the control unit 136, and a template is selected and set from the storage unit 134. Alternatively, the template may be stored in the connected computer, a template suitable for the cooker 200 may be selected on the computer, and the template may be stored in the storage unit 134. Further, for example, a manufacturer name and a model number may be input by a combination of switches of the operation panel 120 or a long press. In this case, the manufacturer name and the model number (or corresponding to the representative example) in which the arrangement of the burner 210 (heater) and the grill outlet 220 is the same as the representative example are not set individually in the manufacturer's name and the like. The procedure for pressing each switch of the operation panel 120 corresponding to the number may be described. This allows the installer to select a template by pressing each switch on the operation panel 120 according to the procedure. Note that the selection of the template according to the representative example can be similarly performed even when a computer is connected. When a template is selected according to such a representative example, the template stored in the storage unit 134 may be only a template corresponding to the maker and model number as the representative example. Of course, when there are a plurality of representative examples, a template corresponding to the plurality of representative examples is required.

  The template 140 has information on the three regions 142, 144, 146 where the heat source is located and information on the region 148 where the grill outlet 220 is located. The template 150 also has information on two regions 152 and 154 where the heat source is located and information on the region 156 where the grill outlet 220 is located.

  In the above-described initial setting example 1, the position and the number of the heat sources are specified by using the area where the temperature sensor 300 detects the maximum temperature. However, only the temperature distribution detected by the temperature sensor 300 specifies them accurately. There are times when you can't. This is because the temperature sensor 300 is not installed directly above the center of the cooking surface of the cooking device 200. The temperature sensor 300 is actually provided on the lower surface on the front side on the left side of the center of the range hood 100 as shown in FIG. Further, the temperature sensor 300 is provided to be inclined toward the cooking device 200. For this reason, the temperature of the cooking surface of the cooking device 200 is detected obliquely, and the range in which each region of the temperature sensor 300 detects the temperature is distorted. Due to this distortion, the position and the number of heat sources may not be accurately specified.

  On the other hand, in the initial setting example 2, when the template suitable for the cooker 200 is the template 140 in FIG. 16, the control unit 136 collates the template 140 with the temperature distribution detected by the temperature sensor 300. And the heat source of the template 140, that is, the heat source. The position and the number of heat sources are specified by relying on information in the areas 142, 144, and 146 indicating the positions of the burner 210, the heater, and the grill outlet 220. As described above, by using the template, the position and the number of the heat sources can be specified more accurately. The above description has been simplified to facilitate understanding of the invention. Actually, even if a template is used, a problem of separation or installation depth occurs. Therefore, in practice, it is preferable to prepare a template for each separation distance and each installation depth.

(Initial setting example 3)
Initial setting example 3 is a control method for specifying the position and number of heat sources using the temperature distribution of the top surface 500 detected by the temperature sensor 300 and the cooker-range hood separation distance.

  18 to 20 are diagrams illustrating an example of the position information of the heat source registered in advance according to the separation distance between the cooker 200 and the range hood 100 in order to specify the position of the heat source of the cooker 200. 18 shows the case where the separation distance is 60 cm, FIG. 19 shows the case where the separation distance is 80 cm, and FIG. 20 shows the case where the separation distance is 100 cm.

  As described above, since the temperature sensor 300 is not installed directly above the center of the cooking surface of the cooking device 200, the range in which each region of the temperature sensor 300 detects the temperature is distorted as shown in these figures. For this reason, depending on the difference in the separation distance between the cooker 200 and the range hood 100, for example, even with the same burner 210A, the region where the temperature sensor 300 detects the temperature of the burner 210 is shifted. Similarly, even with the same grill outlet 220, the region where the temperature sensor 300 detects the temperature of the grill outlet 220 is shifted.

  Because of this shift, the position and number of heat sources cannot be specified accurately. For this reason, information indicating to which region of the temperature sensor 300 the position of each heat source corresponds for each separation distance between the cooker 200 and the range hood 100 is stored in the storage unit 134 of the control unit 136. The separation distance between the cooker 200 and the range hood 100 can be set after the range hood 100 is installed above the cooker 200 on site. This setting may be performed, for example, by connecting a computer or by pressing a switch of the operation panel 120 described in a setting manual or the like, as described in the initial setting example 2 described above.

  As described above, the position of the heat source of the cooker 200 is specified by using the position information of the position of the heat source and the position of the air outlet registered in advance according to the separation distance between the cooker 200 and the temperature sensor 300, and Can be set.

  In addition, in addition to the above-described method, the position of the grill outlet 220 may be changed in a position specifying method depending on whether the gas cooker or the IH cooker is used. For example, a grille outlet 220 is located at a position on the back side of the center of the cooker 200 where the temperature rises horizontally in a range smaller than a range equivalent to a width of 300 to 600 mm × a depth of 40 to 80 mm. When the IH cooker is selected, for example, a predetermined concentration intensively in a range smaller than a range equivalent to a width of 10 to 30 mm × a depth of 40 to 80 mm behind the center of the cooker 200. The position where the temperature is rising in the region is defined as grill outlet 220. By employing such a specifying method, the position of grill outlet 220 can be specified more accurately.

  As described above, the position of grill outlet 220 is specified by determining the temperature of top surface 500 on the back side of the center of cooker 200 when the gas cooker is selected by gas / IH selection switch 132. This is performed by a portion where a high region is distributed horizontally in a certain range. When the IH cooker is selected by the gas / IH selection switch 132, the region where the temperature of the top surface 500 on the back side of the center of the cooker 200 is higher than the predetermined range of the cooker 200. This can be performed by a portion concentrated in a narrow area.

  With the three initial setting examples described above, the position and number of heat sources, the presence or absence of a grill, and the like can be accurately grasped.

  In particular, in the initial setting example 1, the position and the number of the heat sources can be set only by the input from the operation panel 120. In the initial setting examples 2 and 3, the position and the number of the heat sources can be accurately set by using a template or setting the separation distance between the cooker 200 and the range hood 100. Further, the threshold temperature may be changed according to the separation distance. Specifically, the threshold temperature may be set higher as the separation distance is shorter, and may be set lower as the separation distance is longer. As described above, when the threshold temperature is changed according to the separation distance, the position and number of each heat source, the presence or absence of a grill, and the position of the grill outlet 220 can be grasped more accurately.

(Operation example)
Next, an operation example after the completion of the initial setting will be described. Here, the operation will be described when the automatic air volume switch 123 on the operation panel 120 (see FIG. 3) is selected.

  FIG. 21 is a flowchart illustrating an operation procedure of the range hood of the present embodiment. The procedure of this flowchart is also executed by the control unit 136.

  The control unit 136 determines whether the gas / IH selection switch 132 has selected “gas” or “IH” (S100). If “gas” is selected (S100: gas), the control unit 136 compares the threshold temperature stored in the storage unit 134 with the temperature of the top surface 500 detected by the temperature sensor 300. As the temperature, the gas threshold temperature shown in FIG. 11 is selected (S110). On the other hand, if “IH” is selected (S100: IH), the control unit 136 selects the IH threshold temperature shown in FIG. 12 (S120).

  The IH threshold temperature is set to a value lower than the gas threshold temperature. This is because the temperature of the heat source of the cooker 200 for IH tends to be lower than the temperature of the heat source of the cooker 200 for gas. The cooking device 200 for IH may generate a large amount of odor and oily smoke even if the temperature of the top surface 500 is not as high as that of the cooking device 200 for gas. By setting the IH threshold temperature to a value lower than the gas threshold temperature, the IH cooker 200 can also exhaust odor and oily smoke with an appropriate exhaust air volume. That is, the odor and oil smoke collection performance can be made the same for the gas cooker 200 and the IH cooker 200, and the odor and oil smoke collection performance does not depend on the type of the cooker 200.

  Subsequently, the control unit 136 detects the temperature of the top surface 500 of the cooking device 200 with the compound eye temperature sensor 300. The temperature of the top surface 500 is detected for each area (S130). Specifically, as shown in FIGS. 6 to 10, the temperature of all regions TIJ = T11 to T88 of temperature sensor 300 is detected.

  Next, the controller 136 lowers the threshold temperature applied to the grill outlet 220 (S140). At this point, the position of the grill outlet 220 has already been stored in the storage unit 134 as the position of the heat source as an initial setting. Therefore, the position is taken out from the storage unit 134, and the threshold temperature to be compared with the detected temperature of the area of the corresponding temperature sensor 300 is lowered. Generally, the temperature of the odor or oil smoke discharged from the grill outlet 220 is lower than the temperature of the odor or oil smoke discharged from the heat source. For this reason, even if the detected temperature of the grill outlet 220 is low, a large amount of odor or oily smoke may be discharged. Therefore, by lowering the threshold temperature of the area corresponding to the position of the outlet, even when the detected temperature of the grill outlet 220 is lower than the detected temperature of the heat source, the amount of exhaust air by the exhaust fan 116 can be increased. The collection rate of odor and oily smoke from the outlet 220 is improved.

  FIG. 22 is a diagram schematically illustrating a difference between the threshold temperature applied to the region of the heat source of the cooker 200 and the threshold temperature applied to the region of the grill outlet 220, and is an example of the threshold temperature used for setting the air volume. is there.

  As shown in FIG. 22, the magnitude of the threshold temperature of (Gij = four regions of G73 to G76) is smaller than the magnitude of the threshold temperature of the region other than that region. This is the same whether the cooker 200 is gas or IH. The four regions Gij = G73 to G76 match the region (Tij = T73 to T76) of grill outlet 220 located on the back side from the center of cooker 200, as shown in FIGS. 9 and 10. It is. The storage unit 134 stores a uniform threshold temperature, but the control unit 136 corresponds to the position of the grill outlet 220 based on the position of the grill outlet 220 specified in the initialization process. The threshold temperature of the region to be reduced. In order to facilitate understanding, a description will be given of a sharp temperature. If the temperature obtained by adding 20 ° C. to the detected temperature of the grill outlet 220 is 50 ° C. or more, the exhaust fan 116 is set to the strong mode. That is, if the detected temperature of the grill outlet 220 is 30 ° C. or higher, the exhaust fan 116 is set to the strong mode. If the detected temperature of the heat source is 50 ° C. or higher, the exhaust fan 116 is set to the strong mode. Therefore, in this case, the threshold temperature in the region of the grill outlet 220 (Gij = four regions G73 to G76) is lower by 20 ° C. than the other regions.

  Subsequently, control unit 136 compares the temperature of top surface 500 of cooker 200 with the threshold temperature (S150). This comparison is specifically performed in the following procedure. First, the detected temperature in the area of the grill outlet 220 is compared with the threshold temperature of a portion corresponding to the area of the grill outlet 220. Since the temperature of the grill outlet 220 is detected in four regions Tij = T73 to T76 as shown in FIGS. 9 and 10, the temperature of the grill outlet 220 is compared with the four regions Gij = G73 to G76 in FIG. Compare. First, T73 is compared with G73, then T74 is compared with G74, and so on until the comparison between T76 and G76, and the number X of the regions where the detected temperature is higher than the threshold temperature is counted. When the comparison of the area of the grill outlet 220 is completed, the detected temperature of the other area is compared with the threshold temperature. This comparison is performed for Tij = T11 to T88 excluding the four regions Tij = T73 to T76. First, T11 is compared with G11, then T12 is compared with G12, and so on until the comparison between T88 and G88 is performed, and the number Y of areas where the detected temperature is higher than the threshold temperature is counted.

  Subsequently, the control unit 136 selects an exhaust air volume based on the comparison result of S150 (S160). Subsequently, the control unit 136 drives the exhaust fan 116 at the selected exhaust air volume in the first mode or the second mode. The selection of the exhaust air volume and the driving of the exhaust fan 116 are performed in the following manner.

  As described above, the number of areas where the detected temperature is higher than the threshold temperature in the area of the grill outlet 220 is X, and the number of areas where the detected temperature is higher than the threshold temperature in the area other than the grill outlet 220 is Y. If so, the sum of the areas exceeding the threshold temperature is X + Y. When the number of X + Y does not exceed the preset determination value Z, the control unit 136 sets the exhaust air volume to the first mode. On the other hand, when the number of X + Y exceeds the preset determination value Z, the control unit 136 sets the exhaust air volume to the second mode in which the exhaust air volume is larger than the first mode.

  As described above, when the gas cooker is selected, the control unit 136 compares the temperature of the top surface 500 with the threshold temperature for the gas cooker for each region, selects the exhaust air volume according to the comparison result, and performs the IH cooking. When the cooking appliance is selected, the temperature of the top surface 500 and the threshold temperature for the IH cooking appliance are compared for each region, and the exhaust air volume is selected according to the comparison result.

  Further, as described above, the control unit 136 specifies at least the position of the grill outlet 220 of the cooker 200 from the temperature of the top surface 500, and the threshold temperature of the region corresponding to the grill outlet 220 is the threshold temperature of another region. A comparison is made using a value smaller than the temperature, and the exhaust air volume is selected according to the comparison result.

  Further, the exhaust air volume selected by the control unit 136 is larger when the total number (X + Y) of the temperature regions of the top surface 500 exceeding the threshold temperature exceeds a predetermined number (judgment value Z). Mode (second mode) is selected.

  When the control unit 136 sets the exhaust air volume as described above, the exhaust air volume can be increased even when the detected temperature of the top surface 500 is low and a large amount of odor or oily smoke is generated, and the contaminated air can be increased. Can be effectively prevented from spreading.

  FIG. 23 is a diagram illustrating an example of a mode of an exhaust air volume selected according to the number of heat sources used in the cooker and whether or not the grill is used.

  The control unit 136 specifies the position and the number of the heat sources used in the cooker 200 in the initialization processing. The exhaust air volume is selected based on the position and number of heat sources used in cooker 200, the type information of the heat sources, and the temperature of top surface 500 detected by temperature sensor 300.

  FIG. 23 illustrates a case where the burner 210 (or heater) and the grill outlet 220 are separately specified (set) as heat sources. For example, when the number of burners 210 (heaters) used as heat sources is 0 to 2, the number of grills exceeding the threshold temperature t1 (the threshold temperature applied to the area of the grill outlet 220 in FIG. 21) and the threshold temperature t2 If the total number of burners 210 (heaters) exceeding (threshold temperature applied in a region other than grill outlet 220 in FIG. 22) is 2 or more, control unit 136 sets the exhaust air volume to the second mode. When the number of the burners 210 (heaters) as the heat sources used is three, the control is performed when the number of grills exceeding the threshold temperature t1 is one or less, or when the number of heat sources exceeding the threshold temperature t2 is one or less. The unit 136 sets the exhaust air volume to the second mode. Under other conditions, the controller 136 sets the exhaust air volume to the first mode. The specific mode of setting the exhaust air volume of the control unit 136 is as shown in FIG.

  As described above, the control unit 136 specifies the number and position of the heat sources used in the cooker 200 based on the temperature of the top surface 500 and whether or not the grill is used, and determines the area corresponding to the used heat source. The temperature of the top surface 500 and the threshold temperature are compared for each region, and when the grill is used, the temperature of the top surface 500 and the threshold temperature of the region corresponding to the grill outlet 220 are compared and compared for each region. Select the exhaust air volume according to the result.

  As described above, besides setting the exhaust air volume according to the number of regions exceeding the threshold temperature, the number of heat sources and grills being used, etc., the exhaust air volume is selected based on the threshold temperature at which the largest exhaust air volume is required It is also possible.

  For example, if the detected temperature of one region among the temperatures of the top surface 500 detected by the temperature sensor 300 exceeds the threshold temperature at which the largest exhaust air volume is required, only one region exceeds the threshold temperature. However, the control unit 136 drives the exhaust fan 116 with the maximum exhaust air volume.

  By performing such control, even when the temperature of the top surface 500 rises rapidly, the exhaust air volume can be increased earlier so as to follow the temperature rise, and the diffusion of contaminated air is efficiently prevented. it can.

  In addition, the control unit 136 determines any one of the area corresponding to the position of the grill outlet 220 and the other area, or the area corresponding to the position of the grill outlet 220 and the area corresponding to the position of the heat source. The average value of the temperature of the top surface 500 may be compared with the threshold temperature, and the exhaust air volume may be selected according to the comparison result.

  By performing such control, the exhaust fan 116 can be exhausted without wasteful operation and when exhaust is required.

  Next, returning to the flowchart of FIG. 21, the control unit 136 determines whether or not there is a stop signal (S180). If there is no stop signal (S180: NO), the process returns to the step of S130, and the processes from S130 to S170 are repeated. On the other hand, if there is a stop signal (S180: YES), the operation of range hood 100 is stopped (S190).

  As described above, according to the range hood 100 of the present embodiment, since the threshold temperature applied to the area of the grill outlet 220 is set lower than the threshold temperature applied to the other areas, the range from the grill outlet 220 The amount of exhaust air can be set according to the odor and oil smoke that is blown out, and the odor, smoke, and oil discharged from the grill outlet 220 can be prevented from being diffused indoors.

  Further, in the above-described embodiment, the range hood 100 that automatically controls only the air volume of the exhaust fan 116 has been illustrated. However, the present invention provides a range hood different from the range hood of the present embodiment as shown in FIG. That is, the present invention is also applicable to a range hood 100 including a disk 119 for capturing oil smoke. The disk 119 rotates during the cooking operation and functions as a filter for capturing oil from oil smoke.

  In the case of a range hood provided with the disk 119, the rotation speed of the disk 119 may be controlled similarly to the exhaust fan 116. That is, the control of the rotation speed of the disk 119 is the same as the control of the exhaust air volume of the exhaust fan 116, the position and the number of heat sources used, whether or not the grill is used, the separation distance between the range hood 100 and the cooker 200, and The rotation speed of the disk 119 may be determined from the temperature distribution of the surface 500 and controlled. Further, in the case of the range hood 100 having such a disk 119, the automatic air volume control of the exhaust fan 116 may not be performed, and only the automatic rotation speed control of the disk may be performed.

  Further, in the above-described embodiment, the case where two modes of the first mode and the second mode are provided as the mode of the exhaust air volume is illustrated, but three or more modes are provided as the modes having different exhaust air volumes. Is also good.

  When automatically operating the range hood 100, a specification may be adopted in which the optimum mode is selected from all of the set modes to change the exhaust air volume, or the optimum mode may be changed from a specific mode. A specification that selectively changes the exhaust air volume may be adopted. For example, in the case of the range hood 100 in which the selection of the exhaust air volume can be selected from three levels of weak, medium, and strong, in the automatic operation, for example, the mode of two steps, medium and strong, is selected from the mode of three steps of weak, medium, and strong. It is also possible to adopt a specification in which the amount of exhaust air is switched between medium and high as the control target, and only in the case of manual operation, low can be selected.

  In the above-described embodiment, the same threshold temperature is applied regardless of the heat source. However, the threshold temperature may be changed for each heat source. Since the distance between the temperature sensor 300 and each heat source is different, the threshold temperature may be changed according to the distance. For example, in the present embodiment, there are four heat sources (three burners (heaters) and one grill outlet), and the temperature sensor 300 is provided on the front side of the range hood 100 and on the left side when viewed from the user side. Therefore, the threshold temperature of the left front heat source may be set to the lowest.

  As described above, the embodiments of the present invention have been described, but the present invention is not limited to the above embodiments, and can be implemented as various forms based on the technical idea described in the claims. Needless to say, they are also within the scope of the present invention.

100 range hood,
110 exhaust part,
112 inlet,
114 exhaust port,
116 exhaust fan,
118 fan motor,
120 operation panel,
121 operation switch,
122 air volume switch,
123 air volume automatic switch,
124 timer switch,
125 lighting switch,
126 constant ventilation switch,
130 control device,
132 gas / IH selection switch,
134 storage,
136 control unit,
200 cookers,
210 burners,
220 grill outlet,
300 temperature sensor,
500 Top.

Claims (18)

A compound eye temperature sensor that detects the temperature distribution on the top of the cooker,
A control unit that specifies the position and number of heat sources provided by the cooker from the temperature distribution of the top surface,
Range hood with. Furthermore, it has an operation panel for giving instructions for initial settings,
When an initial setting is instructed by the operation panel, the control unit sequentially radiates the heat sources included in the cooking appliance, and the cooking appliance includes the cooking appliance based on a temperature distribution of the top surface detected by the temperature sensor. The range hood according to claim 1, wherein the position and the number of the heat sources are specified. The control unit includes:
The range hood according to claim 1, wherein when the position and the number of the heat sources are specified, a specification completion process is performed. The specific completion processing includes:
The sound guide that notifies that the specification of the position and the number of the heat sources is completed, lighting on / off of a light, blinking of a light, sounding of a completion sound, or turning off of the heat source, according to claim 3, wherein The described range hood. An operation panel for inputting model information of the cooking device,
A storage unit that stores the position and the number of heat sources included in the cooking device for each of the model information of the cooking device,
A control unit that extracts the position and number of heat sources of the cooking device corresponding to the model information input from the operation panel from the storage unit and specifies the position and number of heat sources included in the cooking device,
Range hood with. The control unit includes:
When the cooking device corresponding to the model information input from the operation panel is not stored in the storage unit, the position and the number of heat sources input from the operation panel are determined by the position of the heat source included in the cooking device. The range hood according to claim 5, wherein the range hood is specified as a number. An operation panel for selecting the type of cooker,
A storage unit that stores the position and the number of heat sources included in the cooking device for each of the models of the cooking device and the cooking device,
A control unit that extracts the position and number of the heat source of the cooker corresponding to the model of the cooker selected from the operation panel from the storage unit and specifies the position and the number of the heat source included in the cooker,
Range hood with. A compound eye temperature sensor that detects the temperature distribution on the top of the cooker,
A storage unit that stores the position and the number of heat sources included in the cooker for each model of the cooker,
Recognize the position and number of heat sources provided in the cooker from the temperature distribution on the top surface, compare the recognized position and number of heat sources with the position and number of heat sources stored in the storage unit, and recognize the recognized heat source. A control unit that specifies the model having the position and number of the heat source closest to the position as the model of the cooker,
Range hood with.   The heat source provided in the cooker includes a burner and / or a grill outlet of a cooker for gas, or a cooking heater and / or a grill outlet of a cooker for IH. Crab range hood. An exhaust fan provided above the cooker and capable of changing an exhaust air volume;
A storage unit that stores a position and the number of heat sources present on the top surface of the cooker, and a threshold temperature that is a reference for changing an exhaust air volume according to the position and the number of the heat sources,
A temperature sensor for detecting the temperature of the top surface of the cooker,
A control unit that controls an exhaust air volume of the exhaust fan according to a temperature and a threshold temperature detected by the temperature sensor,
Range hood with. The storage unit stores the position information and the number of the heat sources present in the cooking device specified by the type information specifying the type of the cooking device and the type information,
The control unit retrieves the position and the number of the heat sources from the storage unit according to the type information that is input, and uses the threshold temperature corresponding to the position and the number of the retrieved heat sources to use the air volume of the exhaust fan. The range hood according to claim 10, wherein the range hood is controlled. The temperature sensor is a compound eye temperature sensor that detects the temperature of the top surface with a plurality of pixels,
The control unit specifies the position and the number of the heat sources existing on the top surface from the position of the pixel whose temperature detected by the temperature sensor is equal to or higher than a threshold temperature, and stores the position and the number in the front storage unit. The range hood according to 1.   The range according to claim 12, wherein the control unit compares the position and the number of the heat source specified by the temperature detected by the temperature sensor with the position and the number of the heat source stored in the storage unit. hood.   The storage unit stores the position and the number of the heat sources, and the type of the heat source, which is a burner, an IH cooking heater, or a grill outlet, and stores the burner, the IH cooking heater, and the grill outlet. The range hood according to any one of claims 10 to 13, wherein the corresponding threshold temperatures are stored.   The range hood according to claim 14, wherein a threshold temperature for controlling an exhaust air volume is lower at a threshold temperature corresponding to the grill outlet than a threshold temperature corresponding to the burner or the IH cooking heater. An exhaust fan that can change the exhaust air volume,
A storage unit that stores a position and the number of heat sources present on the top surface of the cooker, and a threshold temperature corresponding to the position and the number of the heat sources,
A temperature sensor for detecting a temperature of the top surface of the cooker, and a method of controlling a range hood,
Storing in advance a threshold temperature corresponding to the position and number of various heat sources in the storage unit;
After installing the range hood above the cooker, storing the position and the number of the heat sources present on the top surface of the cooker in the storage unit before starting operation,
Controlling the exhaust air volume of the exhaust fan according to the temperature detected by the temperature sensor and the threshold temperature after the operation of the range hood is started. Storing the position and the number of the heat sources in the storage unit,
When a plurality of the heat sources are present on the top surface, the heat sources are sequentially radiated one by one, and the position and number of the heat sources are identified by sequentially detecting the temperature when the heat is radiated by the temperature sensor. 17. The method of controlling a range hood according to claim 16, further comprising: storing the specified position and number of the heat source in the storage unit.   18. The step of storing the specified position and number of the heat sources in the storage unit, wherein for each of the specified heat sources, the type of the heat source is a burner, an IH cooking heater, or a grill outlet. 3. The method for controlling a range hood according to item 1.