JP7112079B2 - Range hood control method - Google Patents

Description

The present invention relates to a range hood control method.

Conventionally, there is a range hood with an automatic operation function that detects the temperature of the top surface of the cooker with a surface temperature detector provided on the hood and determines the air volume based on the detected temperature (Patent Document 1).

JP 2012-241950 A

Such range hoods can estimate the approximate location and number of heat sources (burners and output units) based on the temperature detected by the surface temperature detector. No information could be obtained, and more precise air volume control could not be performed.

For this reason, it may not be possible to accurately collect and exhaust greasy smoke generated from food and utensils during cooking, and there is a risk that odors, smoke, and oil will diffuse into the room.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a range hood control method capable of performing precise air volume control according to the position and number of heat sources.

In addition, a range hood control method of the present invention for achieving the above object includes an exhaust fan capable of changing the exhaust air volume, a storage unit storing the positions and the number of heat sources existing on the top surface of the cooker, A range hood control method comprising a temperature sensor that detects the temperature of the top surface of the cooker,
When the range hood is installed above the cooker, the positions and the number of the heat sources existing on the top surface of the cooker are specified, and the specified positions and the number of the heat sources are stored in the storage unit. and storing .

According to the present invention, it is possible to specify the position and the number of heat sources of the cooker on which the cooker hood is installed, so that more precise air volume control can be performed.

It is a front view at the time of installing the cooker hood of this embodiment in a kitchen. It is a side view at the time of installing the cooker hood of this embodiment in a kitchen. It is a front view of the operation panel with which the cooker hood of this embodiment is provided. It is a block diagram of the control system of the cooker hood of this embodiment. FIG. 4 is a diagram schematically showing how a temperature sensor detects the temperature of the top surface of the cooker. FIG. 4 is a diagram schematically showing how the temperature sensor detects the temperature of the top surface of the cooker when cooking is performed 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 a cooker by a temperature sensor at the time of cooking using two heat sources of the front side. FIG. 5 is a diagram schematically showing how the temperature sensor detects the temperature of the top surface of the cooker when the heat source on the back side is used for cooking. FIG. 4 is a diagram schematically showing how the temperature sensor senses the temperature of the top surface of the cooker when the grill of the cooker is used for cooking. FIG. 13 is a diagram three-dimensionally showing how the temperature sensor detects the temperature of the top surface of the cooker when the grill of the cooker is used for cooking. FIG. 4 is a diagram schematically showing a gas threshold temperature applied to a gas cooker; FIG. 4 is a diagram schematically showing an IH threshold temperature applied to an IH cooker; It is a flowchart which shows the control method of the initial setting of the cooker hood of this embodiment. FIG. 14 is a flowchart continued from FIG. 13; FIG. FIG. 4 is a diagram schematically showing how the temperature sensor detects the temperature of the top surface of the cooker after one burner is ignited. FIG. 4 is a diagram showing an example of a template for specifying the positions and number of heat sources of a cooker; FIG. 10 is a diagram showing an example of another template for specifying the positions and number of heat sources of the cooker; FIG. 4 is a diagram showing an example of heat source position information registered in advance according to the separation distance between the cooker and the range hood in order to specify the position of the heat source of the cooker. FIG. 10 is a diagram showing another example of heat source position information registered in advance according to the separation distance between the cooker and the range hood in order to specify the position of the heat source of the cooker. FIG. 10 is a diagram showing another example of heat source position information registered in advance according to the separation distance between the cooker and the range hood in order to specify the position of the heat source of the cooker. It is a flowchart which shows the operating procedure of the cooker hood of this embodiment. FIG. 4 is a diagram schematically showing the difference between the threshold temperature applied to the area of the grill outlet of the cooker and the threshold temperature applied to other areas. FIG. 5 is a diagram showing an example of an exhaust air volume mode selected according to the number of heat sources used in a cooker and whether or not a grill is used; It is a figure which shows the range hood of a type 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 invention is not limited to only the following embodiments. In addition, each drawing is exaggerated and expressed for convenience of explanation. Therefore, the dimensional ratio of each component in each drawing differs from the actual one. In the drawings, the same elements are denoted by the same reference numerals, and duplicate descriptions are omitted in the specification.

(Range hood configuration)
FIG. 1 is a front view when the range hood of this embodiment is installed in a kitchen. Moreover, FIG. 2 is a side view at the time of installing the range hood of this embodiment in a kitchen.

As shown in FIGS. 1 and 2, the cooker hood 100 of this embodiment is installed above the cooker 200 . The cooker hood 100 absorbs odors, smoke, odors including oil, and greasy smoke generated during cooking by the cooker 200 and exhausts them to the outside. The illustrated cooker 200 is a gas cooker, and has three burners (hereinafter simply referred to as burners 210) and one grill outlet 220 on the top surface 500 as heat sources. Therefore, the heat source is the burner 210 for the gas cooker and the IH cooking heater (also called IH heater or simply heater) for the IH cooker. In addition, in both the gas cooker and the IH cooker, if the cooker is equipped with a grill, the grill outlet 220 is also a heat source present on the top surface 500 . Therefore, as used herein, reference to simply “heat source” includes burner 210 or heater and grill outlet 220 .

The range hood 100 has a temperature sensor 300 for detecting the temperature of the top surface 500 of the cooker 200 on the lower surface on the left front side of the central portion. The temperature sensor 300 detects the temperature of the area indicated by the dotted line in the drawing. The temperature sensor 300 is, for example, a compound eye temperature sensor having a plurality of pixels so that the temperature of 8×8=64 regions can be separately detected. Therefore, the temperature sensor 300 can detect the temperature of the top surface 500 of the cooker 200 for each of 64 regions. In this embodiment, in order to facilitate understanding of the invention, a compound eye temperature sensor capable of separately detecting the temperatures of 8×8=64 regions is exemplified. A compound eye temperature sensor may be used that can separately sense the temperature of the regions. Further, a compound eye temperature sensor capable of separately detecting temperatures in more regions may be used. As a compound eye temperature sensor, for example, a compound eye infrared sensor can be exemplified.

The range hood 100 has an exhaust section 110 at its upper portion. The exhaust part 110 exhausts odors and greasy smoke from the cooker 200 . The exhaust part 110 has an intake port 112 for sucking the oily smoke from the cooker 200 , an exhaust port 114 communicating with the outside, and a passage connecting the intake port 112 and 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).

The range hood 100 has an operation panel 120 for instructing the operation of the range hood 100 on its upper front side.

FIG. 3 is a front view of the operation panel 120 included in the cooker hood 100 of this embodiment. The operation panel 120 has an operation switch 121, an air volume switch 122, an air volume automatic 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 weak, medium, or strong. The air volume automatic switch 123 switches to an automatic mode in which the exhaust air volume of the exhaust fan 116 is automatically switched in accordance with the temperature of the top surface 500 of the cooker 200 detected by the temperature sensor 300 . A timer switch 124 sets the time for the exhaust fan 116 to rotate after cooking is finished. A lighting switch 125 turns on/off an LED light bulb that illuminates the upper surface of the cooker 200 . The constant ventilation switch 126 operates/stops constant ventilation by manually rotating/stopping the exhaust fan 116 .

Furthermore, this operation panel 120 can instruct the range hood to initialize. Simultaneously pressing a plurality of switches arranged on the operation panel 120 is set to enter an initial setting mode (also called service mode, maintenance mode, etc.). For example, the operation switch 121 and the constant ventilation switch 126 are pressed simultaneously. When the initial setting mode is entered, the heat sources provided in cooker 200 are sequentially radiated by a control method to be described later. is identified. The positions and number of heat sources are stored in a storage unit 134 (described later). The type of heat source is stored by the gas/IH selection switch 132 (see FIG. 4) (details will be described later). The plurality of switches for entering the initial setting mode may be a combination of switches other than the combination of the switches described above, or may be a long press of one switch. Such switch combinations and long presses are described in an installation manual (also called an installation procedure manual, service manual, etc.). The installation manual includes the range hood installer (installer, initial setting person (including cases where the user of the range hood makes the initial settings, and cases where the initial settings are made by a person other than the user), etc. Same hereafter. ) sees it, and the installer follows the procedure to make the initial settings.

FIG. 4 is a block diagram of the control system of the cooker hood 100 of this embodiment. Range hood 100 has exhaust fan 116 , fan motor 118 , operation panel 120 , controller 130 and temperature sensor 300 . Exhaust fan 116, fan motor 118, and operation panel 120 are described above. The control device 130 is built in the cooker hood 100 .

Control device 130 has gas/IH selection switch 132 , storage section 134 , and control section 136 . The gas/IH selection switch 132 is a selection switch that selects 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 an installer when installing the range hood 100 above the cooker.

Storage unit 134 stores the type, position, and number of heat sources present on top surface 500 of the cooker. The type of heat source indicates whether the heat source is the 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 . Further, the position of the heat source is a coordinate value when the top surface 500 is a two-dimensional coordinate system. The two-dimensional coordinate system here is the same as the divided detection areas of the temperature sensor 300, which will be described later. The storage unit 134 also stores threshold temperatures corresponding to the types, positions, and numbers of the stored heat sources.

This threshold temperature is a reference for selecting the exhaust air volume of the exhaust unit 110, and is stored in association with each region of the temperature of the top surface 500 detected by the temperature sensor 300. FIG. The threshold temperature stores both the gas threshold temperature used for the gas cooker 200 and the IH threshold temperature used for the IH cooker 200, as well as the grill outlet threshold temperature. Among the threshold temperatures stored in the storage unit 134, the threshold temperature for the IH cooker is lower than the threshold temperature for the gas cooker. Also, the threshold temperature for the grill outlet is even lower than the threshold temperature for the IH cooker. That is, the temperatures at which the exhaust air volume is the same satisfy the threshold temperature for the gas cooker>threshold temperature for the IH cooker>threshold temperature for the grill outlet. Also, it is preferable to store different grill outlet threshold temperatures for the grill of the cooking appliance 200 for gas and the grill of the cooking appliance 200 for IH. This is because when the heat source in the grill is a gas burner, the amount of heat released from the outlet is greater 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 for gas > for IH.

Storage unit 134 further stores the positions and the number of heat sources provided in cooking appliance 200 for each model information of cooking appliance 200 . Also, the model of the cooking appliance 200 and the positions and the number of heat sources included in the cooking appliance 200 are stored for each model of the cooking appliance 200 .

When an initial setting is instructed by the operation panel 120 before starting operation, the control unit 136 sequentially heats the heat sources provided in the cooker 200, and cooks from the temperature distribution of the top surface 500 detected by the temperature sensor 300 at that time. Identify the location of the heat source provided by the vessel 200 . When the positions and number of heat sources are specified, the specification completion process is performed. The identification completion process is any of voice guidance, turning on and off lighting, blinking lighting, sounding a completion sound, and turning off the heat sources to notify that the identification of the positions and the number of heat sources has been completed.

In addition, control unit 136 retrieves the positions and the number of heat sources of cooking appliance 200 corresponding to the model information input from operation panel 120 from storage unit 134 before starting operation, identify. When the cooking appliance 200 corresponding to the model information input from the operation panel 120 is not stored in the storage unit 134 , the control unit 136 stores the position and the number of the heat sources input from the operation panel 120 so that the cooking appliance 200 Identify the location and number of heat sources provided. Control unit 136 retrieves from storage unit 134 the positions and the number of heat sources of cooker 200 corresponding to the model of cooker 200 selected from operation panel 120 , and specifies the positions and the number of heat sources provided in cooker 200 . Further, control unit 136 recognizes the positions and the number of heat sources provided in cooker 200 from the temperature distribution of top surface 500, and compares the recognized positions and the number of heat sources with the positions and the number of heat sources stored in storage unit 134. By collation, the model having the position and the number of heat sources closest to the recognized position of the heat source is specified as the model of the cooker 200 .

After the start of operation, control unit 136 retrieves the threshold temperature corresponding to the specified cooker from storage unit 134, compares it with the temperature of top surface 500 detected by temperature sensor 300, and makes the detected temperature equal 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 constituting the cooker hood 100 will be described in detail.

(Temperature sensor 300)
FIG. 5 is a diagram schematically showing how the temperature sensor 300 detects the temperature of the top surface 500 of the cooker 200. As shown in FIG.

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

FIG. 6 is a diagram schematically showing how 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 detected temperature is higher in the dark-filled area in accordance with the depth of the color. FIG. 7 is a diagram three-dimensionally showing the temperature detection state of the top surface 500 of the cooker 200 by the temperature sensor 300 when cooking is performed using the two burners 210A and 210B on the front side. be. In FIG. 7, the area where the solid figure is high has a high detected temperature according to its height. From these figures, it can be seen that the temperatures detected in the regions T22 to T27, T32 to T37, and T42 to T47 of the temperature sensor 300 are higher than the temperatures detected in the other regions.

FIG. 8 is a diagram schematically showing how the temperature sensor 300 detects the temperature of the top surface 500 of the cooker 200 when cooking is performed using the burners 210C on the back side. In FIG. 8 as well, the detected temperature is higher in a dark-filled region in accordance with the depth of the color. Since the burner 210C on the back side is smaller than the two burners 210A and 210B on the front side and has a smaller heating power, its detected temperature is also lower than that in FIG. Looking at this figure, it can be seen that the detected temperatures in the regions T43, T44, T53, T54, T63, and T64 of the temperature sensor 300 are higher than the detected temperatures in the other regions.

FIG. 9 is a diagram schematically showing how the temperature sensor 300 senses the temperature of the top surface 500 of the cooker 200 when the grill of the cooker 200 is used for cooking. In FIG. 9 as well, dark-filled areas are areas where the detected temperature is higher than other areas. FIG. 10 is a diagram three-dimensionally showing how the temperature sensor 300 senses the temperature of the top surface 500 of the cooker 200 when the grill of the cooker 200 is used for cooking. In FIG. 10, the area where the solid figure is high has a high detected temperature according to its height. It can be seen from this figure that the detected temperature in the region T73 to T76 of the temperature sensor 300 is higher than the detected temperature in the other regions.

As shown in FIGS. 6 to 10, temperature sensor 300 can detect the temperature of top surface 500 in all regions for each region. Only the area corresponding to burner 210A and the area corresponding to burner 210B of temperature sensor 300 have a high temperature. Also, when the burner 210C is used for cooking, the temperature of only the area of the temperature sensor 300 corresponding to the burner 210C rises. Furthermore, when cooking is being done using the grill of cooker 200, the temperature rises only in the area corresponding to grill outlet 220 of temperature sensor 300. FIG. Of course, when the burners 210A, 210B, 210C, and grill are used for cooking, the temperature of the regions of the temperature sensor 300 corresponding to the burners 210A, 210B, 210C, and the grill outlet 220 is get higher Therefore, by looking at the temperature distribution on top surface 500, it is possible to easily identify which heat source of burners 210A to 210C is dissipating heat, whether the grill of cooker 200 is being used, and the like.

FIG. 11 is a diagram schematically showing the gas threshold temperature applied to the gas cooker 200. As shown in FIG. This 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. and the threshold temperature of the region of Gij. For example, the temperature of the top surface 500 in the region T11 is compared with the threshold temperature in the region G11, and the temperature of the top surface 500 in the region T12 is compared with the threshold temperature in the region G12. is performed for all 64 regions until the temperature of G88 is compared with the threshold temperature of region G88.

FIG. 12 is a diagram schematically showing the IH threshold temperature applied to the IH cooker 200. As shown in FIG. This threshold temperature corresponds to all regions of the temperature of the top surface 500 detected by the temperature sensor 300, like the threshold temperature for gas. For example, when the temperature sensor 300 detects the temperature of the top surface 500 distributed as shown in FIGS. and the threshold temperature of the region of Cij. For example, the temperature of the top surface 500 in the region T11 is compared with the threshold temperature in the region C11, and the temperature of the top surface 500 in the region T12 is compared with the threshold temperature in the region C12. and the threshold temperature of region C88 for all 64 regions.

(Initial setting example 1)
Next, the initial setting operation will be explained. Here, as an initial setting example 1, a control method for igniting heat sources one after another (radiating heat) and specifying the positions of the heat sources by the compound eye temperature sensor 300 will be described.

Here, it is assumed 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 cooker hood 100 of this embodiment. This flowchart is processed by the control unit 136 .

First, as described above, by simultaneously pressing a plurality of predetermined switches on the operation panel 120, the initialization 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 gas or IH is selected is stored in the storage unit 134 (if the gas/IH selection switch 132 is an electronic switch, after the range hood is turned on, the control unit 136 to store it in the storage unit 134. If the gas/IH selection switch 132 is a physical changeover switch, whether gas or IH is stored according to the direction of the switch after the range hood is turned on. stored in section 134).

After entering the initial setting mode, the controller 136 turns on the temperature sensor 300 (S11). Subsequently, if the storage unit 134 stores that the range is the gas range, the control unit 136 outputs guidance for prompting ignition of one burner 210 . Alternatively, if the storage unit 134 stores that the range is the IH range, a guidance prompting the ignition of one IH heater is output (below, brackets indicate the case where the IH heater is selected) (S12). . This guidance may be, for example, a predetermined length of beep sound, the number of intermittent beeps, or the like, or flashing light emission of lighting. Instructions for guidance, the length of the corresponding sound and the number of intermittent times, or the number of times the light blinks and the length of turning on and off 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 of S12, the installer of the cooker 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 identified by the temperature sensor 300 (S14). If the position of the burner 210 (heater) can be identified here (S14), that position is stored in the storage unit 134 as the position of one burner 210 (heater), and the number of items 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 type information of the heat source. Subsequently, the control unit 136 outputs guidance for detection completion (S16).

Here, after one burner 210 is ignited in S13, the detection state of the temperature of the top surface 500 of the cooker 200 by the temperature sensor 300 will be described. FIG. 15 is a diagram schematically showing how temperature sensor 300 senses the temperature of top surface 500 of cooker 200 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). As a result, the control unit 136 stores in the storage unit 134 that the burner 210 is located at the position of the region TIJ=T33 in S15, adds one to the number, and stores the result.

On the other hand, when the position of the burner 210 (heater) cannot be specified in S14, the control section 136 outputs an error (S31). After that, the installer extinguishes the burner 210 (heater) (S32). Processing then ends.

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

Subsequently, the installer inputs the presence/absence of the unset burner 210 and the presence/absence of the grill (S18). The installation manual or the like describes that the presence or absence of an unset burner 210 and the presence or absence of a grill can be input by pressing any switch on the operation panel 120 . For example, if the air volume switch 122 is long pressed (for example, about 3 seconds), there is an unset burner (heater), and if the air volume automatic switch 123 is long pressed (for example, about 3 seconds), there is a grill (at this time, there is no unset burner (heater)). A long press (for example, about 3 seconds) of the constant ventilation switch 126 turns off the unset burner (heater) and grill. Of course, any combination of such switch operations may be used.

Subsequently, the control unit 136 determines whether or not there is an unset burner 210 (heater) based on the input in S18 (S19). Here, if there is an unset burner 210 (heater) (S19: YES), the process returns to S12 to continue the process. 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 or not there is a grill from the input of S18 (S20). Here, if there is no grill (S: NO), the process ends.

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

Subsequently, the control unit 136 determines whether or not the temperature sensor 300 has identified the position of the grill outlet 220 (S23). If the position of the grille outlet 220 can be specified here (S23: YES), the position is stored in the storage unit 134 as the position of the grille outlet 220, and the number is incremented by one (S24). At this time, it is also stored that the stored position is the grill outlet 220 as 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 set as the number of burners 210 (heaters) and the number in S24 may be set as the number of grill outlets 220 (usually one) and stored separately.

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

Although not shown, the position of grille outlet 220 is also stored in storage unit 134 as having grille outlet 220 in area Tij detected by temperature sensor 300 at the time of S23 in the same manner as described with reference to FIG. will do.

After that, the installer who receives the guidance of S25 extinguishes the grill (S26), the controller 136 turns off the temperature sensor 300 (S26), and the process ends.

On the other hand, if the position of the grill outlet 220 cannot be specified in S23, the controller 136 outputs an error (S34). After that, the installer extinguishes the grill (S35). After that, the process ends.

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

(Initial setting example 2)
Next, as an 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 showing an example of a template 140 for specifying the positions and number of heat sources of cooking appliance 200. As shown in FIG. This template 140 is applied to a cooker 200 having three burners 210 and a grill, as shown in FIG. FIG. 17 is a diagram showing another example of template 140 for specifying the positions and number of heat sources of cooker 200. As shown in FIG. This template 150 applies to a cooker 200 having two burners 210 and a grill.

These templates 140 and 150 are stored in storage section 134 of control section 136 . Note that the templates 140 and 150 may be stored in the storage section 134 of an external server instead of the storage section 134 of the control section 136 . Various types of cookers 200 are available from various manufacturers. Therefore, it is preferable to store templates for all types of cookers 200 currently on the market.

It is preferable that this template can be selected according to the manufacturer name and model number of the cooker 200 when installing the range hood 100 on site. As a specific selection pattern, for example, although not shown, settings are made using a setting computer (for example, a smartphone, tablet, laptop computer, other dedicated terminal, etc.) connected to the control unit 136 of the cooker hood. Thereby, the manufacturer name and model number of the cooker 200 can be input using the keyboard and mouse of the computer for setting. The input model number is transmitted to the control unit 136 and a template is selected and set from the storage unit 134 . It should be noted that templates may be stored in a connected computer, a template suitable for cooking appliance 200 may be selected on the computer, and the template may be stored in storage unit 134 . Further, for example, the manufacturer name and model number may be input by combining or long-pressing each switch on the operation panel 120 . In this case, instead of having the manufacturer name and model number set individually, the manufacturer name and model number (or corresponding to a representative The procedure for pressing each switch on the operation panel 120 corresponding to the corresponding number of each switch on the operation panel 120 will be described. This enables the installer to select a template by pressing each switch on the operation panel 120 according to the procedure. It should be noted that the selection of templates by representative examples can be performed in the same way even when a computer is connected. When templates are selected based on such representative examples, the templates to be stored in storage unit 134 may be only templates corresponding to manufacturers and model numbers that are representative examples. Of course, if there are multiple representative examples, templates corresponding to those multiple representative examples are required.

The template 140 has information of three areas 142, 144, 146 where the heat sources are located and an area 148 where the grill outlet 220 is located. The template 150 also has information on two areas 152, 154 where the heat sources are located and an area 156 where the grill outlet 220 is located.

In the initial setting example 1 described above, the position and number of heat sources are specified using the area where the temperature sensor 300 detects the maximum temperature, but the temperature distribution detected by the temperature sensor 300 alone can accurately specify these. Sometimes you can't. This is because the temperature sensor 300 is not placed directly above the center of the cooking surface of the cooker 200 . The temperature sensor 300 is actually provided on the lower surface of the front side on the left side from the central portion of the cooker hood 100, as shown in FIG. Moreover, the temperature sensor 300 is provided so as to be inclined toward the cooker 200 . Therefore, the temperature of the cooking surface of the cooker 200 is detected obliquely, and the temperature detection range of each region of the temperature sensor 300 is distorted. This distortion can lead to inaccurate identification of the location and number of heat sources.

On the other hand, in the initial setting example 2, if the template 140 of FIG. and the heat source of the template 140, ie. Based on the information in areas 142 , 144 , 146 indicating the positions of burners 210 , heaters, and grill outlets 220 , the positions and number of heat sources are identified. By using the template in this way, the positions and number of heat sources can be specified more accurately. It should be noted that the above description is simplified for easy understanding of the invention. In practice, even the use of templates poses problems of spacing and installation depth. Therefore, in practice, it is preferable to prepare a template for each separation distance and installation depth.

(Initial setting example 3)
Initial setting example 3 is a control method for specifying the positions and the 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 showing an example of heat source position information registered in advance according to the separation distance between cooker 200 and range hood 100 in order to specify the position of the heat source of cooker 200. FIG. 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 placed directly above the center of the cooking surface of the cooker 200, the temperature sensing range of each region of the temperature sensor 300 is distorted as shown in these figures. Therefore, due to the difference in separation distance between cooker 200 and range hood 100, for example, even with the same burner 210A, the temperature sensor 300 detects the temperature of burner 210 in a different area. Similarly, even if the grill outlet 220 is the same, the area where the temperature sensor 300 detects the temperature of the grill outlet 220 is shifted.

This misalignment makes it impossible to accurately identify the location and number of heat sources. For this reason, the storage unit 134 of the control unit 136 stores information indicating which region of the temperature sensor 300 corresponds to the position of each heat source for each separation distance between the cooker 200 and the range hood 100 . 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. For this setting, for example, as introduced in the above initial setting example 2, it is preferable to connect a computer or follow the procedure of how to press each switch on the operation panel 120 described in the setting manual or the like in advance.

As described above, the position of the heat source of the cooker 200 is specified 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. can be done by setting

In addition to the above method, the position of the grill outlet 220 may be determined by a different method depending on whether the cooker is a gas cooker or an IH cooker. For example, grill air outlet 220 is located on the rear side of cooker 200 and has a horizontal temperature rise within a range smaller than a range corresponding to 300 to 600 mm wide by 40 to 80 mm deep. Further, when the IH cooker is selected, for example, a predetermined range is concentrated on the back side of the center of the cooker 200 and in a range smaller than the range corresponding to 10 to 30 mm in width x 40 to 80 mm in depth. A grill outlet 220 is defined as a position where the temperature rises in the region. By adopting such an identification method, the position of the grill outlet 220 can be identified more accurately.

In this way, when the gas cooker is selected by the gas/IH selection switch 132, the position of the grill outlet 220 is determined by determining the temperature of the top surface 500 on the rear side of the cooker 200 relative to the central portion. It is done by the part where the high area is horizontally distributed in a certain range. Further, when the IH cooker is selected by the gas/IH selection switch 132, the region of the top surface 500 on the back side of the cooker 200 where the temperature is higher than the central portion of the cooker 200 is higher than the certain range of the cooker 200. It can be done with parts that are concentrated in a small area.

With the three initial setting examples described above, it is possible to accurately ascertain the positions and number of heat sources, the presence or absence of grills, and the like.

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

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

FIG. 21 is a flow chart showing the operation procedure of the range hood of this embodiment. The procedure of this flowchart is also executed by the control unit 136 .

The control unit 136 determines which of "gas" and "IH" is selected by the gas/IH selection switch 132 (S100). If "gas" is selected (S100: gas), the control unit 136 compares the temperature of the top surface 500 detected by the temperature sensor 300 with the threshold temperature stored in the storage unit 134. 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 controller 136 selects the IH threshold temperature shown in FIG. 12 (S120).

The IH threshold temperature is set to a lower value than the gas threshold temperature. This is because the temperature of the heat source of cooker 200 for IH tends to be lower than the temperature of the heat source of cooker 200 for gas. Even if the temperature of the top surface 500 of the IH cooker 200 is not as high as that of the gas cooker 200, a large amount of odor and greasy smoke may be generated. By setting the IH threshold temperature to a value lower than the gas threshold temperature, even the IH cooker 200 can exhaust odor and greasy smoke with an appropriate exhaust air volume. In other words, the gas cooker 200 and the IH cooker 200 can have the same odor and soot collection performance, and the odor and soot 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 cooker 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 retrieved from the storage unit 134, and the threshold temperature to be compared with the detected temperature in the corresponding area of the temperature sensor 300 is lowered. Generally, the temperature of the odor and oily smoke discharged from the grill outlet 220 is lower than the temperature of the odor and oily smoke discharged from the heat source. Therefore, even if the detected temperature of the grill outlet 220 is low, a large amount of odor and greasy smoke may be discharged. Therefore, by lowering the threshold temperature of the area corresponding to the position of the air outlet, even if the detected temperature of the grill air outlet 220 is lower than the detected temperature of the heat source, the amount of air exhausted 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 showing the difference between the threshold temperature applied to the heat source area of the cooker 200 and the threshold temperature applied to the grill outlet 220 area. be.

As shown in FIG. 22, the magnitude of threshold temperature in (Gij=four regions of G73 to G76) is smaller than the magnitude of threshold temperature in regions other than that region. This is the same whether the cooker 200 is gas or IH. The four areas of Gij=G73 to G76 are areas that coincide with the area (Tij=T73 to T76) of the grill outlet 220 located on the rear side of the center of the cooker 200, as shown in FIGS. is. The threshold temperature of a uniform size is stored in the storage unit 134, but the control unit 136 determines the threshold temperature corresponding to the position of the grill outlet 220 based on the position of the grill outlet 220 specified in the initial setting process. Lower the threshold temperature of the area where For ease of understanding, if the temperature obtained by adding 20° C. to the detected temperature of the grill outlet 220 is 50° C. or higher, the exhaust fan 116 is set to the high 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 high mode. Also, if the detected temperature of the heat source is 50° C. or higher, the exhaust fan 116 is set to the high mode. Therefore, in this case, the threshold temperature of the area of the grill outlet 220 (the four areas of Gij=G73 to G76) is 20° C. lower than that of the other areas.

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

Subsequently, the control unit 136 selects the exhaust air volume based on the comparison result of S150 (S160). Subsequently, the control unit 136 drives the exhaust fan 116 with the selected exhaust air volume of the first mode or the second mode. Selection of the exhaust air volume and driving of the exhaust fan 116 are performed by the following method.

As described above, X is the number of areas of the grill outlet 220 where the detected temperature is higher than the threshold temperature, and Y is the number of areas other than the grill outlet 220 where the detected temperature is higher than the threshold temperature. If so, the total area above the threshold temperature is X+Y. When the number of X+Y does not exceed the predetermined 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 that of the first mode.

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

Further, as described above, control unit 136 identifies at least the position of grill outlet 220 of cooking appliance 200 from the temperature of top surface 500, and the threshold temperature of the area corresponding to grill outlet 220 is the threshold temperature of the other areas. A value smaller than the temperature is used for comparison, and the exhaust air volume is selected according to the comparison result.

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

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 greasy smoke is generated. can be effectively prevented from spreading.

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

Control unit 136 identifies the positions and the number of heat sources used in cooking appliance 200 in the initial setting process. The amount of exhaust air is selected based on the position and number of heat sources used in cooking appliance 200, information on the types of heat sources, and the temperature of top surface 500 detected by temperature sensor 300. FIG.

FIG. 23 illustrates a case where the burner 210 (or heater) and the grill outlet 220 are separately identified (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 areas other than grill outlet 220 in FIG. 22) is 2 or more, control unit 136 sets the exhaust air volume to the second mode. Also, when the number of burners 210 (heaters) used as heat sources is 3, the number of grills exceeding the threshold temperature t1 is 1 or less, or the number of heat sources exceeding the threshold temperature t2 is 1 or less. A unit 136 sets the exhaust air volume to the second mode. Under conditions other than these, the control unit 136 sets the exhaust air volume to the first mode. A specific mode of setting the exhaust air volume by the control unit 136 is as shown in FIG.

In this way, the control unit 136 identifies the number and positions of the heat sources used in the cooker 200 and whether or not the grill is used based on the temperature of the top surface 500, and determines the area corresponding to the heat sources being used. 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 in the region corresponding to the grill outlet 220 and the threshold temperature are compared for each region. Select the exhaust air volume according to the results.

Besides setting the exhaust airflow according to the number of areas above the threshold temperature, the number of heat sources and grills used, etc., as described above, select the exhaust airflow based on the threshold temperature where the highest exhaust airflow is required. It is also possible.

For example, if the detected temperature of one region of the temperature of the top surface 500 detected by the temperature sensor 300 exceeds the threshold temperature required for the largest exhaust air volume, only one region exceeds the threshold temperature. Even so, the control unit 136 drives the exhaust fan 116 with the maximum exhaust air volume.

By performing such control, even if the temperature of the top surface 500 rises rapidly, the exhaust air volume can be quickly increased to follow the temperature rise, and the diffusion of polluted air can be efficiently prevented. can.

In addition, the control unit 136 divides into either the area corresponding to the position of the grill outlet 220 and other areas, 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 and the threshold temperature may be compared, and the exhaust air volume may be selected according to the comparison result.

By performing such control, the exhaust fan 116 can be reliably exhausted when necessary without operating the exhaust fan 116 unnecessarily.

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 step S130 and repeats the processes from S130 to S170. On the other hand, if there is a stop signal (S180: YES), the operation of the range hood 100 is stopped (S190).

As described above, according to the cooker hood 100 of the present embodiment, the threshold temperature applied to the area of the grill outlet 220 is lower than the threshold temperature applied to other areas. The amount of exhaust air can be set according to the odor and greasy smoke blown out, and the odor, smoke, and oil discharged from the grill outlet 220 can be prevented from diffusing into the room.

Further, in the above embodiment, the range hood 100 that automatically controls only the air volume of the exhaust fan 116 was exemplified, but the present invention provides a range hood of a type different from the range hood of the present embodiment, as shown in FIG. That is, it can also be applied to the range hood 100 provided with the disk 119 that captures the oil of the soot. The disk 119 rotates during the cooking operation and functions as a filter that captures the oil from the soot.

In the case of the cooker hood having the disk 119, the number of revolutions of the disk 119 may be controlled similarly to the exhaust fan 116. FIG. In other words, control of the rotation speed of the disk 119 is similar to control of the exhaust air volume of the exhaust fan 116, and the position and 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 ceiling of the cooker 200. 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 embodiment, the case of having two modes, the first mode and the second mode, as modes of the exhaust air volume was exemplified. Also good.

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

Further, in the above embodiment, the same threshold temperature is uniformly applied regardless of the heat source, but 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 this 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 as viewed from the user side. Therefore, the threshold temperature of the left front heat source may be set to be the lowest.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and can be embodied in various forms based on the technical ideas described in the claims. , of course, are also within the scope of the present invention.

100 range hood,
110 exhaust,
112 air intake,
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 light switch,
126 constant ventilation switch,
130 controller,
132 gas/IH selection switch,
134 storage unit,
136 control unit,
200 cooker,
210 burner,
220 grill outlet,
300 temperature sensor,
500 Top surface.

Claims (4)

an exhaust fan capable of changing the exhaust air volume;
a storage unit that stores the positions and the number of heat sources present on the top surface of the cooker;
A range hood control method comprising a temperature sensor that detects the temperature of the top surface of the cooker,
When the range hood is installed above the cooker, the positions and the number of the heat sources existing on the top surface of the cooker are specified, and the specified positions and the number of the heat sources are stored in the storage unit. A method for controlling a range hood, comprising: storing . storing a threshold temperature corresponding to the identified positions and number of the heat sources in the storage unit;
2. The method of controlling a range hood according to claim 1 , further comprising controlling the exhaust air volume of the exhaust fan according to the temperature detected by the temperature sensor and the threshold temperature after the range hood starts operating . The step of storing the identified positions and number of the heat sources in the storage unit,
When there are a plurality of heat sources on the top surface, heat is radiated from each heat source one by one, and the temperature sensor sequentially detects the temperature when each heat is radiated, thereby specifying the position and number of the heat sources. 3. The method of controlling a cooker hood according to claim 1 or 2 , wherein the specified positions and number of said heat sources are stored. 4. The step of storing the positions and numbers of the specified heat sources in the storage unit stores which of the burner, the IH cooking heater, and the grill outlet is the type of the heat source for each of the specified heat sources. Control method of the range hood described in.

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