Range hood and cooking system

Abstract

To provide a range hood with which an operation of a heating cooker is made appropriate for a user with respect to a condition of the range hood, and a heating cooking system.SOLUTION: A flow straightening plate detection sensor 9a detects a using condition and a non-using condition of a flow straightening plate 8. When the flow straightening plate detection sensor 9a detects the non-using condition of the flow straightening plate 8, a signal transmission part 6a of a range hood 10 transmits a signal for locking a heating part 11 of a heating cooker 20 in a heating stop condition.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a range hood and a cooking system.

Background Art

[0002] Techniques related to maintenance inside the casing or cleaning of the rectifying plate in a range hood are disclosed, for example, in Japanese Patent Application Laid-Open No. 2012-229856 (Patent Document 1). In Patent Document 1, when the position for the non-use state of the rectifying plate is detected, the operation of the exhaust fan is stopped, and even if a start command for the exhaust fan is input, the stop of the exhaust fan is maintained. Thus, when the rectifying plate is moved to the position for the non-use state during maintenance, even if the switch for starting the exhaust fan is erroneously operated, the exhaust fan does not rotate, making it easier to perform maintenance inside the casing or clean the rectifying plate.

[0003] Also, a technique for performing communication between an interlocking device such as a range hood and a cooking appliance using infrared bidirectional communication means is disclosed, for example, in Japanese Patent No. 4984936 (Patent Document 2). Patent Document 2 discloses controlling the heating output according to the fan rotation speed of the interlocking device using infrared bidirectional communication means.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in both Patent Documents 1 and 2, when cleaning or maintaining the range hood, for example, if the user's body touches the operation part of the cooking appliance located below the range hood, the cooking appliance may malfunction. In addition, depending on the state of the range hood, the operation of the cooking appliance may not be appropriate for the user.

[0006] The present invention has been made in view of the above problems, and an object thereof is to provide a range hood and a cooking system in which the operation of the cooking appliance is appropriate for the user with respect to the state of the range hood.

Means for Solving the Problems

[0007] The range hood of the present invention is a range hood disposed above a cooking appliance having a heating part, and includes an exhaust fan, a state detection sensor, an operation part, and a transmission part. The state detection sensor detects the state of the range hood. The operation part operates the state of the range hood. The transmission part transmits a signal for locking the heating part in a heating stop state based on at least one of a detection signal indicating the state of the range hood detected by the state detection sensor and an operation signal indicating the operation content input to the operation part.

[0008] According to the range hood of the present invention, the transmission part transmits a signal for locking the heating part in a heating stop state based on at least one of a detection signal indicating the state of the range hood detected by the state detection sensor and an operation signal indicating the operation content input to the operation part. As a result, since the heating part is locked in the heating stop state, the heating part does not malfunction, etc., and the operation of the cooking appliance can be made appropriate for the user with respect to the state of the range hood.

[0009] The above range hood further includes a rectifying plate. The state detection sensor has a rectifying plate detection sensor that detects the used state and the non - used state of the rectifying plate. When the rectifying plate detection sensor detects the non - used state of the rectifying plate, the transmission part transmits a signal for locking the heating part in a heating stop state.

[0010] Thus, for example, when the rectifying plate is made inactive for cleaning or maintenance of the range hood, even if the user's body touches the operation part of the cooking appliance, it is possible to prevent the cooking appliance from malfunctioning. Therefore, the operation of the cooking appliance can be made appropriate for the user with respect to the state of the range hood.

[0011] The above range hood further includes an oil tray. The state detection sensor has an oil tray detection sensor that detects the attached state and the removed state of the oil tray. When the oil tray detection sensor detects the removed state of the oil tray, the transmission unit transmits a signal to lock the heating unit in the heating stop state.

[0012] If the oil tray is forgotten to be installed, oil will accumulate on the rectifying plate, and there is a risk of oil dripping when the rectifying plate is opened (when it is in the inactive state). Therefore, when the removed state of the oil tray is detected, by the transmission unit transmitting a signal to lock the heating unit in the heating stop state, it is possible to notify the user that the device is in an abnormal state, and it is possible to prevent oil from accumulating on the rectifying plate.

[0013] In the above range hood, the state detection sensor has a fan detection sensor that detects the attached state and the removed state of the exhaust fan. When the fan detection sensor detects the removed state of the exhaust fan, the transmission unit transmits a signal to lock the heating unit in the heating stop state.

[0014] If the exhaust fan is in the removed state, the range hood cannot exhaust air. Therefore, in this state, it is desirable to set the heating unit to the heating stop state. Also, when the fan motor that rotates the exhaust fan is driven when the exhaust fan is in the removed state, depending on the specifications, the temperature fuse of the fan motor may blow, leading to replacement.

[0015] In the above range hood, the operation unit has a lock switch for locking the exhaust fan in a rotation - stopped state. The transmission unit transmits a signal for locking the heating unit in a heating - stopped state based on an operation signal for locking the exhaust fan in a rotation - stopped state at the lock switch.

[0016] Thus, for example, when the exhaust fan is locked in a rotation - stopped state for cleaning or maintenance of the range hood, even if the user's body touches the operation unit of the heating cooker, it is possible to prevent the heating cooker from malfunctioning. Therefore, the operation of the heating cooker can be made appropriate for the user with respect to the state of the range hood.

[0017] In the above range hood, the operation unit has a fan operation change - over switch for selecting and operating between the start state and the stop state of the exhaust fan. The state detection sensor has a fan rotation detection sensor for detecting the rotation of the exhaust fan. When the fan rotation detection sensor detects the stop state of the exhaust fan in a state where the start state of the exhaust fan is selected by the fan operation change - over switch, the transmission unit transmits a signal for locking the heating unit in a heating - stopped state.

[0018] The state where the exhaust fan has stopped even though the rotation state of the exhaust fan has been selected by the fan operation change - over switch is, for example, a failure state of the range hood. If heating is performed by the heating unit of the heating cooker in such a failure state of the range hood, the gas generated during heating cooking cannot be exhausted.

[0019] On the other hand, in the above range hood, in the above - mentioned failure state, the heating unit is locked in a heating - stopped state. Thus, even if the user tries to start heating with the heating cooker without knowing the above - mentioned failure state, the heating of the heating cooker is not started. Therefore, it is possible to prevent the gas generated by heating cooking by the heating unit from filling the room.

[0020] The above range hood further includes an oil tray and a rectifying plate. The oil tray is located below the exhaust fan. The rectifying plate is located below the oil tray. The state detection sensor includes a fan detection sensor for detecting the mounting state of the exhaust fan, an oil tray detection sensor for detecting the mounting state of the oil tray, and a rectifying plate detection sensor for detecting the used state and the unused state of the rectifying plate. When the mounting state of the exhaust fan is detected by the fan detection sensor, the mounting state of the oil tray is detected by the oil tray detection sensor, and the used state of the rectifying plate is detected by the rectifying plate detection sensor, the transmitting unit transmits a signal for releasing the lock of the heating stop state in the heating unit.

[0021] Thereby, when all the members (exhaust fan, oil tray and rectifying plate) removed during cleaning or maintenance are attached, the lock of the heating stop state in the heating unit is released. Therefore, it is possible to prevent the exhaust fan, oil tray and rectifying plate from being forgotten to be attached. In addition, since the lock is automatically released based on the detection signal, the operation of releasing the lock by the user becomes unnecessary.

[0022] The cooking heating system of the present invention includes the above range hood and a cooking heater. The cooking heater has a receiving unit for receiving a signal from the transmitting unit. The heating unit is locked in the heating stop state based on the signal received by the receiving unit.

[0023] According to the cooking heating system of the present invention, since the heating unit is locked in the heating stop state, the heating unit does not malfunction, and the operation of the cooking heater becomes appropriate for the user with respect to the state of the range hood.

[0024] In the above cooking heating system, at least one of the range hood and the cooking heater has a notification unit for notifying that the heating unit is locked in the heating stop state.

[0025] Thereby, the user can recognize by vision, hearing, etc. that the heating unit is locked in the heating stop state.

Advantages of the Invention

[0026] As described above, according to the present invention, it is possible to realize a range hood and a cooking system in which the operation of the cooking appliance is appropriate for the user with respect to the state of the range hood.

Brief Description of the Drawings

[0027]

Figure 1

Figure 2

Figure 3

Figure 4

Modes for Carrying Out the Invention

[0028] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the specification and drawings, the same reference numerals are given to the same components or corresponding components, and duplicate descriptions will not be repeated. Also, in the drawings, for the sake of convenience of explanation, the configuration may be omitted or simplified in some cases.

[0029] <Configuration of Range Hood and Cooking System> The configuration of the range hood and the cooking system in the present embodiment will be described with reference to FIGS. 1 and 2.

[0030] As shown in FIG. 1, the cooking heating system 30 of the present embodiment is installed, for example, in a kitchen. The cooking heating system 30 includes a range hood 10 and a cooking heater 20. Each of the range hood 10 and the cooking heater 20 is arranged, for example, along a wall surface 50. Also, each of the range hood 10 and the cooking heater 20 may be of an island type arranged away from the wall surface 50. The range hood 10 is arranged above the cooking heater 20.

[0031] The range hood 10 sucks in air (smoke, steam, etc.) containing oil and the like generated during cooking in the cooking heater 20 and discharges it outdoors. The range hood 10 includes a casing 1, an exhaust fan 2, a fan motor 2a (driving source), an oil tray 3, a hood portion 4, an operation unit 5, and a rectifying plate 8.

[0032] The casing 1 has a box shape. Inside the casing 1, an exhaust fan 2 and a fan motor 2a are arranged. The exhaust fan 2 is, for example, a sirocco fan.

[0033] The fan motor 2a generates a rotational driving force for rotating the exhaust fan 2. The fan motor 2a has a main body portion and a rotating shaft. The main body portion of the fan motor 2a generates a rotational driving force. The rotating shaft of the fan motor 2a rotates by the rotational driving force of the main body portion.

[0034] The fan motor 2a is, for example, a direct current (DC: Direct Current) motor that operates by pulse width modulation. The fan motor 2a may be an alternating current (AC: Alternating Current) motor.

[0035] The exhaust fan 2 is detachably attached to the rotating shaft of the fan motor 2a. The exhaust fan 2 rotates together with the rotating shaft of the fan motor 2a. The fan motor 2a is not limited to a motor, and any driving source that can exhaust air containing oil and the like through an exhaust path by operating the exhaust fan 2 may be used.

[0036] A decorative panel 1a is attached to the lower part of the casing 1. The oil tray 3 is detachably attached to the decorative panel 1a, for example, by magnetic force. The oil tray 3 is attached to the casing 1 via the decorative panel 1a. The oil tray 3 is for collecting the oil content contained in the exhaust gas discharged by the exhaust fan 2.

[0037] A hood portion 4 is attached to the lower end of the casing 1. An operation unit 5 is arranged at the front end of the hood portion 4. The operation unit 5 is a part for inputting an operation command for controlling the operations of each part of the range hood 10. The operation unit 5 is composed of, for example, push button switches, but may also be a touch panel display.

[0038] As shown in FIG. 2, the operation unit 5 has a plurality of switches 5a to 5f. The switch 5a is a lock switch for locking the exhaust fan 2 in a rotation stop state. By continuously pressing the lock switch 5a for a predetermined time (for example, 3 seconds) or more, the exhaust fan 2 is locked in the rotation stop state.

[0039] When the exhaust fan 2 is locked in the rotation stop state during the rotation (operation) of the exhaust fan 2, the exhaust fan 2 stops rotating. When the exhaust fan 2 is locked in the rotation stop state during the rotation stop (operation stop) of the exhaust fan 2, the exhaust fan 2 maintains the rotation stop.

[0040] When the exhaust fan 2 is locked in the rotation stop state, the exhaust fan 2 does not receive the operation signal of the operation unit 5 (for example, the fan operation changeover switch 5b described later) and maintains the stop state. In a state where the exhaust fan 2 is locked in the rotation stop state, by continuously pressing the lock switch 5a for a predetermined time (for example, 3 seconds) or more, the lock of the rotation stop state of the exhaust fan 2 is released.

[0041] Switch 5b is a fan operation switch for controlling the startup, stop, and wind force of the exhaust fan 2. That is, the fan operation switch 5b is for selecting and operating the startup state, stop state, and wind force of the exhaust fan 2.

[0042] Switch 5c is a timer switch for setting the rotation time (operation time) of the exhaust fan 2. Switch 5d is a lighting switch for controlling the ON / OFF of the lighting. Switch 5e is a switch that prompts the user to perform maintenance by lighting an LED. An LED is arranged inside the upper part of switch 5e. This LED lights up when the integrated drive time of the exhaust fan 2 (excluding constant ventilation) reaches a predetermined time or more, and turns off when the user presses the switch. As an alternative specification, switch 5e may be an automatic maintenance switch that rotates the exhaust fan 2 at high speed to centrifugally separate the oil adhering and remaining on the exhaust fan 2. Switch 5f is a constant ventilation switch for performing constant ventilation by continuously rotating the exhaust fan 2.

[0043] As shown in FIG. 1, the rectifying plate 8 is for rectifying the airflow sucked in by the exhaust fan 2. The rectifying plate 8 is attached to the hood portion 4 with a gap therebetween.

[0044] The rectifying plate 8 has a locking fitting 8a and a connecting fitting 8b. An attachment fitting 7a and a hook portion 7b are attached to the lower surface of the hood portion 4. The connecting fitting 8b of the rectifying plate 8 is locked to the hook portion 7b. The locking fitting 8a of the rectifying plate 8 is lifted and swung around the locking point. The locking fitting 8a is fixed to the attachment fitting 7a by, for example, a lock pin. Thereby, the rectifying plate 8 is attached to the hood portion 4. The locking fitting 8a may be fixed to the attachment fitting 7a by magnetic force.

[0045] The range hood 10 further has state detection sensors 9a to 9d. The state detection sensors 9a to 9d include a rectifying plate detection sensor 9a, an oil tray detection sensor 9b, a fan detection sensor 9c, and a fan rotation detection sensor 9d.

[0046] The rectifier plate detection sensor 9a detects the used state and the unused state of the rectifier plate 8. The used state of the rectifier plate 8 means the state in which the rectifier plate 8 is attached to the hood portion 4 as shown by the dashed-dotted line in FIG. 1. That is, the used state of the rectifier plate 8 means the state in which the connecting fitting 8b of the rectifier plate 8 is locked to the hook portion 7b and the locking fitting 8a of the rectifier plate 8 is fixed to the mounting fitting 7a. The unused state of the rectifier plate 8 means a state other than the used state of the rectifier plate 8.

[0047] The oil tray detection sensor 9b detects the state in which the oil tray 3 is attached to the decorative panel 1a and the state in which the oil tray 3 is removed from the decorative panel 1a. The fan detection sensor 9c detects the state in which the exhaust fan 2 is attached to the rotating shaft of the fan motor 2a and the state in which the exhaust fan 2 is removed from the rotating shaft of the fan motor 2a.

[0048] Each of the rectifier plate detection sensor 9a, the oil tray detection sensor 9b, and the fan detection sensor 9c is, for example, a proximity sensor. The proximity sensor may be any of an inductive proximity sensor, a capacitive proximity sensor, and a magnetic proximity sensor.

[0049] When a magnetic proximity sensor is used as the proximity sensor, a magnetic body such as a permanent magnet is attached to each of the rectifier plate 8, the oil tray 3, and the exhaust fan 2. When the magnetic body is not close to the magnetic proximity sensor, the electrodes (contacts) of the reed switch in the magnetic proximity sensor do not contact. For this reason, the magnetic proximity sensor is in a non-detection state (OFF). On the other hand, when the magnetic body is close to the magnetic proximity sensor, the reed piece in the magnetic proximity sensor operates by the magnetic flux of the magnetic body and the electrodes (contacts) of the reed switch contact. For this reason, the magnetic proximity sensor is in a detection state (ON).

[0050] When the rectifying plate detection sensor 9a is in the non-detection state (OFF), the rectifying plate 8 is in the non-use state. Also, when each of the oil tray detection sensor 9b and the fan detection sensor 9c is in the non-detection state (OFF), each of the oil tray 3 and the exhaust fan 2 is in the removed state.

[0051] When the rectifying plate detection sensor 9a is in the detection state (ON), the rectifying plate 8 is in the use state. Also, when each of the oil tray detection sensor 9b and the fan detection sensor 9c is in the detection state (ON), each of the oil tray 3 and the exhaust fan 2 is in the attached state.

[0052] The fan rotation detection sensor 9d detects the rotation speed of the exhaust fan 2. The fan rotation detection sensor 9d is, for example, a rotation angle sensor.

[0053] The cooking heater 20 is, for example, a gas stove. The cooking heater 20 is not limited to a gas stove and may be an electromagnetic cooker such as an IH (Induction Heating) cooking heater, or may be other cooking heaters such as a microwave oven or an oven range.

[0054] The cooking heater 20 is, for example, a so-called built-in type gas stove that is installed by dropping it into an installation opening provided on a kitchen counter. However, the cooking heater 20 is not limited to the built-in type and may be a tabletop type table stove.

[0055] The cooking heater 20 has a heating unit 11, an operation unit 13, and a top plate 14. The heating unit 11 is for cooking and heating an object to be heated disposed on the top plate 14. The heating unit 11 is disposed on the top plate 14. The heating unit 11 is, for example, a Bunsen type gas burner, but may be a gas burner other than the Bunsen type.

[0056] The operation unit 13 is arranged, for example, on the front surface of the cooking heater 20. The operation unit 13 may be arranged on the top plate 14. The operation unit 13 is a part for inputting an operation command for controlling the operation of each part of the cooking heater 20 by a pressing operation or the like by the user. The operation unit 13 has switches for operating ignition, extinguishing, and heat control of the heating unit 11. The operation unit 13 is composed of, for example, push button switches, but may be a touch panel display.

[0057] The cooking system 30 has bidirectional communication means. This bidirectional communication means enables bidirectional communication between the range hood 10 and the cooking heater 20. The bidirectional communication means has transmitting units 6a, 12a and receiving units 6b, 12b.

[0058] The transmitting unit 6a and the receiving unit 6b are installed in the range hood 10. The transmitting unit 12a and the receiving unit 12b are installed in the cooking heater 20. The signal emitted from the transmitting unit 6a of the range hood 10 is received by the receiving unit 12b of the cooking heater 20. The signal emitted from the transmitting unit 12a of the cooking heater 20 is received by the receiving unit 6b of the range hood 10.

[0059] The bidirectional communication means is realized by, for example, infrared communication. In this case, each of the transmitting units 6a, 12a has an infrared light emitting element, and each of the receiving units 6b, 12b has an infrared light receiving element.

[0060] Also, the bidirectional communication means may be realized by any method such as BLUETOOTH (registered trademark), Wi-Fi (registered trademark), Wi-SUN (registered trademark), specific low power radio, connection on HEMS (Home Energy Management System), etc. Also, the Internet or an intranet may be used as the bidirectional communication means.

[0061] <Functional blocks in the cooking system> Next, the functional blocks in the cooking system according to the present embodiment will be described with reference to FIG. 3.

[0062] As shown in FIG. 3, the range hood 10 includes an exhaust fan 2, an operation unit 5, a transmission unit 6a, a reception unit 6b, state detection sensors 9a to 9d, a controller 21, and a notification unit 22.

[0063] The controller 21 acquires an operation signal input to the operation unit 5. Specifically, the controller 21 acquires the operation signals input to each of the plurality of switches 5a to 5f shown in FIG. 2.

[0064] The controller 21 acquires an operation signal from the lock switch 5a. When the controller 21 acquires a signal from the lock switch 5a while the exhaust fan 2 is not locked in the rotation stop state, the controller 21 controls to lock the exhaust fan 2 in the rotation stop state. Further, when the controller 21 acquires a signal from the lock switch 5a while the exhaust fan 2 is locked in the rotation stop state, the controller 21 controls to release the lock of the rotation stop state of the exhaust fan 2.

[0065] The state in which the exhaust fan 2 is locked in the rotation stop state is a state in which the power supply to the fan motor 2a is cut off. Therefore, in the state in which the exhaust fan 2 is locked in the rotation stop state, the fan motor 2a does not receive an operation command at the operation unit 5 of the range hood 10 and maintains the stop state.

[0066] The controller 21 acquires a signal from the fan operation changeover switch 5b. In this case, the controller 21 controls the start, stop, and wind force (rotation speed) of the exhaust fan 2. The controller 21 acquires a signal from the timer switch 5c. In this case, the controller 21 controls the rotation time (operation time) of the exhaust fan 2. The controller 21 acquires a signal from the lighting switch 5d. In this case, the controller 21 controls the ON / OFF of the lighting.

[0067] The controller 21 acquires a signal from the automatic cleaning switch 5e. In this case, the controller 21 controls the exhaust fan to rotate at high speed in order to centrifugally separate the oil adhering and remaining on the exhaust fan 2. The controller 21 always acquires a signal from the ventilation switch 5f. In this case, the controller 21 controls the exhaust fan 2 to rotate continuously.

[0068] The receiving unit 6b receives a signal indicating the operation information of the cooking heater 20 from the transmitting unit 12a of the cooking heater 20. The controller 21 acquires a signal indicating the operation information of the cooking heater 20 from the receiving unit 6b. The controller 21 controls the operation state of the exhaust fan 2 based on the signal indicating the operation information of the cooking heater 20.

[0069] Specifically, when the controller 21 acquires a signal to start (ignite) the heating operation of the cooking heater 20, it controls the exhaust fan 2 to start (operate) its rotation operation. Also, when the controller 21 acquires a signal to end (extinguish) the heating operation of the cooking heater 20, it controls the exhaust fan 2 to end (stop) its rotation operation. Further, when the controller 21 acquires a signal to adjust the heating power of the cooking heater 20, it controls the rotation speed of the exhaust fan 2 to be adjusted.

[0070] The controller 21 acquires the detection signals detected by each of the state detection sensors 9a to 9d. Specifically, the controller 21 acquires a detection signal indicating that the rectifying plate 8 is in either a used state or a non - used state from the rectifying plate detection sensor 9a. Also, the controller 21 acquires a detection signal indicating either the state where the oil tray 3 is attached to the decorative plate 1a or the state where it is removed from the oil tray detection sensor 9b.

[0071] Also, the controller 21 acquires a detection signal indicating either the state where the exhaust fan 2 is attached to the rotating shaft of the fan motor 2a or the state where it is removed from the fan detection sensor 9c. Further, the controller 21 acquires a detection signal indicating the rotation speed of the exhaust fan 2 from the fan rotation detection sensor 9d.

[0072] Based on at least one of the detection signals from the state detection sensors 9a, 9b, 9c, 9d and the operation signal from the operation unit 5 (lock switch 5a), the controller 21 controls the transmitter 6a to transmit a signal for locking the heating unit 11 of the cooking heater 20 in the heating stop state.

[0073] Specifically, when the controller 21 obtains a detection signal from the rectifier plate detection sensor 9a indicating that the rectifier plate 8 is in the non-use state, the controller 21 controls the transmitter 6a to transmit a signal for locking the heating unit 11 in the heating stop state.

[0074] Also, when the controller 21 obtains an operation signal for locking the exhaust fan 2 in the rotation stop state from the lock switch 5a, the controller 21 may control the transmitter 6a to transmit a signal for locking the heating unit 11 in the heating stop state.

[0075] Also, when the controller 21 obtains a detection signal from the fan rotation detection sensor 9d indicating that the exhaust fan 2 is in the stop state while obtaining an operation signal indicating the start state of the exhaust fan 2 from the fan operation changeover switch 5b, the controller 21 may control the transmitter 6a to transmit a signal for locking the heating unit 11 in the heating stop state.

[0076] Also, when the controller 21 obtains a detection signal from the oil tray detection sensor 9b indicating that the oil tray 3 has been removed, the controller 21 may control the transmitter 6a to transmit a signal for locking the heating unit 11 in the heating stop state.

[0077] When the heating unit 11 is locked in the heating stop state as described above, it means that even if an operation is performed on the operation unit 13 of the cooking heater 20 to ignite the heating unit 11, the heating unit 11 does not ignite. For example, when the heating unit 11 is a gas burner, the electromagnetic valve connected to the fuel gas supply pipe to the heating unit 11 is controlled to continue in a closed state. As a result, even if an ignition operation of the heating unit 11 is performed on the operation unit 13, since fuel gas is not supplied to the heating unit 11, the heating unit 11 maintains a state of not igniting. In a state where the heating unit 11 is locked in the heating stop state like this, the heating unit 11 does not accept the operation on the operation unit 13 of the cooking heater 20.

[0078] Further, the controller 21 may control the transmitter 6a so as to issue a signal for releasing each of the lock of the heating stop state in the heating unit 11 and the lock of the rotation stop state in the exhaust fan 2 under a predetermined condition. One of the predetermined conditions is, for example, that the exhaust fan 2 is detected by the fan detection sensor 9c to be attached to the rotation shaft of the fan motor 2a, the oil tray 3 is detected by the oil tray detection sensor 9b to be attached to the decorative plate 1a, and the rectifying plate 8 is detected by the rectifying plate detection sensor 9a to be in a use state.

[0079] Also, in a state where the lock of the heating stop state in the heating unit 11 is released, the heating unit 11 accepts the operation on the operation unit 13 of the cooking heater 20. Note that by continuously pressing the lock switch 5a for a predetermined time (for example, 3 seconds) or more, each of the lock of the heating stop state in the heating unit 11 and the lock of the rotation stop state in the exhaust fan 2 may be released.

[0080] The cooking heater 20 includes a heating unit 11, a transmitter 12a, a receiver 12b, an operation unit 13, a controller 31, and a notification unit 32.

[0081] The controller 31 acquires the operation signal input in the operation unit 13. Specifically, the controller 31 acquires an operation signal indicating the operation (ignition, extinguishing, flame adjustment, etc.) of the heating unit 11 from the operation unit 13.

[0082] When the controller 31 acquires an operation signal indicating the operation of the heating unit 11 from the operation unit 13, it controls the operation of the heating unit 11 based on that operation signal. That is, when the controller 31 acquires an ignition operation signal, it ignites; when it acquires an extinguishing operation signal, it extinguishes; and when it acquires a heating power adjustment operation signal, it controls the heating unit 11 to adjust the heating power. Also, when the controller 31 acquires an operation signal indicating the operation of the heating unit 11 from the operation unit 13, it controls the transmission unit 12a to transmit a signal indicating the operation information of the cooking heater 20.

[0083] The controller 31 acquires the signal received by the receiving unit 12b from the transmitting unit 6a. The controller 31 controls the heating unit 11 to enter a heating stop state based on the signal acquired from the receiving unit 12b.

[0084] The fact that the heating unit 11 is locked in the heating stop state and the exhaust fan 2 is locked in the rotation stop state as described above may be notified by at least one of the notification unit 22 and the notification unit 32. In this case, the controller 21 controls the notification unit 22 to notify the above content. Also, the controller 31 controls the notification unit 32 to notify the above content. From the perspective of notifying during cleaning and maintenance of the range hood 10, it is preferable to notify by the notification unit 22 rather than the notification unit 32. Also, from the perspective of being easily recognizable to the user who intends to perform cooking using the cooking heater 20, it is preferable to notify by the notification unit 32 rather than the notification unit 22.

[0085] Each of the controllers 21 and 22 may be, for example, a processor or a CPU (Central Processing Unit). Each of the notification units 22 and 32 may be a display that notifies through the user's vision, or a speaker that notifies through the user's hearing.

[0086] <Control Method of Cooking System> Next, a control method for the cooking heating system of the present embodiment will be described with reference to FIGS. 1 to 3.

[0087] (First control method) As shown in FIG. 1, when cleaning or maintaining the inside of the casing 1 of the range hood 10, the user first needs to remove the rectifying plate 8 from the hood portion 4. When removing the rectifying plate 8, the locking fitting 8a of the rectifying plate 8 is removed from the mounting fitting 7a of the hood portion 4. After that, with the locking point between the connecting fitting 8b and the hook portion 7b as the center, the locking fitting 8a of the rectifying plate 8 is swung downward. As a result, the rectifying plate 8 shifts from the use state to the non-use state, and the rectifying plate detection sensor 9a detects the non-use state of the rectifying plate 8.

[0088] As shown in FIG. 3, the rectifying plate detection sensor 9a outputs a detection signal indicating that the rectifying plate 8 has entered the non-use state to the controller 21. When the controller 21 acquires the detection signal indicating that the rectifying plate 8 has entered the non-use state, it controls to lock the exhaust fan 2 in the rotation stop state. As a result, the exhaust fan 2 is locked in the rotation stop state. Further, when the controller 21 acquires the detection signal indicating that the rectifying plate 8 has entered the non-use state, it controls the transmitter 6a to transmit a signal for locking the heating unit 11 of the cooking heater 20 in the heating stop state.

[0089] The receiving unit 12b of the cooking heater 20 receives the signal transmitted by the transmitter 6a and outputs it to the controller 31. When the controller 31 acquires the signal from the receiving unit 12b, it controls to lock the heating unit 11 in the heating stop state. As a result, the heating unit 11 is locked in the heating stop state.

[0090] As shown in FIG. 1, after that, the user removes the oil tray 3 from the decorative plate 1a and removes the exhaust fan 2 from the rotating shaft of the fan motor 2a to clean the inside of the casing 1 or perform maintenance on each part.

[0091] (Second control method) As shown in Fig. 1, when cleaning or maintaining the inside of the casing 1 of the range hood 10, the user may continuously press the lock switch 5a (Fig. 2) for a predetermined time or more. As a result, the exhaust fan 2 is locked in the rotation stop state.

[0092] As shown in Fig. 3, in this case, the operation unit 5 (lock switch 5a) outputs an operation signal for locking the exhaust fan 2 in the rotation stop state to the controller 21. When the controller 21 acquires the above operation signal, it controls the exhaust fan 2 to be locked in the rotation stop state. As a result, the exhaust fan 2 is locked in the rotation stop state. Further, when the controller 21 acquires the above operation detection signal, it controls the transmission unit 6a to transmit a signal for locking the heating unit 11 of the cooking heater 20 in the heating stop state.

[0093] The receiving unit 12b of the cooking heater 20 receives the signal transmitted by the transmitting unit 6a and outputs it to the controller 31. When the controller 31 acquires a signal from the receiving unit 12b, it controls the heating unit 11 to be locked in the heating stop state. As a result, the heating unit 11 is locked in the heating stop state.

[0094] As shown in Fig. 1, after that, the user removes the rectifying plate 8 from the hood part 4, removes the oil tray 3 from the decorative plate 1a, and removes the exhaust fan 2 from the rotating shaft of the fan motor 2a to clean the inside of the casing 1 or perform maintenance on each part.

[0095] (Third control method) As shown in Fig. 1, when cleaning or maintaining the inside of the casing 1 of the range hood 10, the user first needs to remove the rectifying plate 8 from the hood part 4 and then remove the oil tray 3 from the decorative plate 1a. When the oil tray 3 is removed from the decorative plate 1a, the removal of the oil tray 3 is detected by the oil tray detection sensor 9b.

[0096] As shown in FIG. 3, the oil tray detection sensor 9b outputs a detection signal indicating that the oil tray 3 has been removed to the controller 21. When the controller 21 acquires a detection signal indicating that the oil tray 3 has been removed, it controls to lock the exhaust fan 2 in a rotation stop state. As a result, the exhaust fan 2 is locked in a rotation stop state. Further, when the controller 21 acquires a detection signal indicating that the oil tray 3 has been removed, it controls the transmitter 6a to transmit a signal for locking the heating unit 11 of the cooking heater 20 in a heating stop state.

[0097] The receiver 12b of the cooking heater 20 receives the signal transmitted by the transmitter 6a and outputs it to the controller 31. When the controller 31 acquires a signal from the receiver 12b, it controls to lock the heating unit 11 in a heating stop state. As a result, the heating unit 11 is locked in a heating stop state.

[0098] As shown in FIG. 1, thereafter, the user removes the exhaust fan 2 from the rotating shaft of the fan motor 2a to clean the inside of the casing 1 or perform maintenance on each part.

[0099] (Fourth control method) As shown in FIG. 1, when cleaning or maintaining the inside of the casing 1 of the range hood 10, the user needs to remove the exhaust fan 2 from the rotating shaft of the fan motor 2a after removing the rectifying plate 8 and the oil tray 3. When the exhaust fan 2 is removed from the rotating shaft of the fan motor 2a, the removal of the exhaust fan 2 is detected by the fan detection sensor 9c.

[0100] As shown in FIG. 3, the fan detection sensor 9c outputs a detection signal indicating that the exhaust fan 2 has been removed to the controller 21. When the controller 21 acquires a detection signal indicating that the exhaust fan 2 has been removed, it controls to lock the fan motor 2a in a rotation stop state. Thereby, the fan motor 2a is locked in a rotation stop state. Further, when the controller 21 acquires a detection signal indicating that the exhaust fan 2 has been removed, it controls the transmitter 6a to transmit a signal for locking the heating unit 11 of the cooking heater 20 in a heating stop state.

[0101] The receiver 12b of the cooking heater 20 receives the signal transmitted by the transmitter 6a and outputs it to the controller 31. When the controller 31 acquires a signal from the receiver 12b, it controls to lock the heating unit 11 in a heating stop state. Thereby, the heating unit 11 is locked in a heating stop state.

[0102] As shown in FIG. 1, thereafter, the user cleans the inside of the casing 1 or performs maintenance on each part.

[0103] (Fifth control method) As shown in FIG. 1, there may be a case where the exhaust fan 2 does not rotate due to a failure or the like even when the user operates the fan operation changeover switch 5b (FIG. 2) to rotate the exhaust fan 2. In this case, when cooking is performed using the heating unit 11 of the cooking heater 20, the exhaust generated by the cooking cannot be discharged to the outside. In such a case, it is preferable to lock the heating unit 11 in a heating stop state so that no exhaust is generated by cooking. Therefore, the following control method is adopted.

[0104] As shown in FIG. 3, when the user operates the operation unit 5 (the fan operation changeover switch 5b), the startup state is selected as the state of the exhaust fan 2. In this case, the operation unit 5 (the fan operation changeover switch 5b) outputs an operation signal for starting up the exhaust fan 2 to the controller 21. When the controller 21 acquires the above operation signal, it controls the exhaust fan 2 to be in the startup state.

[0105] On the other hand, the fan rotation detection sensor 9d detects the rotation speed of the exhaust fan 2 and outputs the detection signal to the controller 21. Since the startup state of the exhaust fan 2 is selected, if there is no failure or the like, the controller 21 acquires a signal indicating the startup state of the exhaust fan 2 from the fan rotation detection sensor 9d. On the other hand, when the exhaust fan 2 cannot be started due to a failure or the like, even if the startup state of the exhaust fan 2 is selected, the controller 21 acquires a signal indicating the stopped state (rotation speed 0) of the exhaust fan 2 from the fan rotation detection sensor 9d. Thus, when the controller 21 acquires a detection signal indicating the stopped state of the exhaust fan 2 in a state where the startup state of the exhaust fan 2 is selected, it controls the transmission unit 6a to transmit a signal for locking the heating unit 11 of the cooking heater 20 in the heating stop state.

[0106] The receiving unit 12b of the cooking heater 20 receives the signal transmitted by the transmitting unit 6a and outputs it to the controller 31. When the controller 31 acquires a signal from the receiving unit 12b, it controls the heating unit 11 to be locked in the heating stop state. Thereby, the heating unit 11 is locked in the heating stop state.

[0107] (The sixth control method) When the cleaning or maintenance is completed, in order to return to the normal operation mode, it is necessary to release the lock of the rotation stop state of the exhaust fan 2 and the lock of the heating stop state of the heating unit 11. To release the lock, for example, there is a method of continuously pressing the lock switch 5a on the operation unit 5 of the range hood 10 for a predetermined time or more.

[0108] However, with this method, there is a risk of unlocking while forgetting to reinstall the removed exhaust fan 2, oil tray 3, and rectifying plate 8. Also, with this method, the user needs to operate a switch to unlock. Therefore, the following control method is adopted.

[0109] As shown in FIG. 3, the controller 21 obtains from the fan detection sensor 9c a detection signal indicating whether the exhaust fan 2 is in the installed state or the removed state. The controller 21 also obtains from the oil tray detection sensor 9b a detection signal indicating whether the oil tray 3 is in the installed state or the removed state. The controller 21 further obtains from the rectifying plate detection sensor 9a a detection signal indicating whether the rectifying plate 8 is in the in-use state or the non-use state.

[0110] When the controller 21 obtains a signal indicating the installation state of the exhaust fan 2, a signal indicating the installation state of the oil tray 3, and a signal indicating the use state of the rectifying plate 8 in a state where the exhaust fan 2 is locked in the rotation stop state and the heating unit 11 is locked in the heating stop state, the controller 21 controls to release the above lock state.

[0111] Specifically, the controller 21 releases the interruption of the current to the fan motor 2a and enables the rotation operation of the exhaust fan 2 based on the operation signal from the operation unit 5. The controller 21 also controls the transmitter 6a to transmit a signal for releasing the lock of the heating stop state in the heating unit 11.

[0112] The receiving unit 12b of the cooking heater 20 receives the signal transmitted by the transmitter 6a and outputs it to the controller 31. When the controller 31 obtains a signal from the receiving unit 12b, the controller 31 controls to release the lock of the heating stop state in the heating unit 11. When the heating unit 11 is, for example, a gas burner, based on the operation signal from the operation unit 13, the opening and closing operation of the electromagnetic valve connected to the fuel gas supply pipe to the heating unit 11 is enabled. Thereby, the lock of the heating stop state in the heating unit 11 is released.

[0113] <Effect> Next, the effects of the present embodiment will be described in comparison with the comparative examples shown in FIG. 4.

[0114] As shown in FIG. 4, when the user performs cleaning, maintenance, etc. on the range hood 10, the user's body may touch the operation unit 13 of the cooking appliance 20. In this case, the cooking appliance 20 may malfunction. For example, the heating unit 11 of the cooking appliance 20 may ignite even though the user does not intend it. In such a case, energy is wasted.

[0115] On the other hand, according to the present embodiment, as shown in FIG. 3, the transmitting unit 6a of the range hood 10 transmits a signal for locking the heating unit 11 in the heating stop state based on at least one of a signal indicating the state of the range hood detected by the state detection sensors 9a, 9b, 9c, 9d and an operation signal indicating the operation content input to the operation unit (lock switch 5a). As a result, since the heating unit 11 is locked in the heating stop state, the heating unit 11 does not malfunction, etc., and the operation of the cooking appliance 20 can be made appropriate for the user with respect to the state of the range hood 10.

[0116] Also, in the present embodiment, as shown in FIG. 3, when the rectifying plate detection sensor 9a detects the non-use state of the rectifying plate 8, the transmitting unit 6a transmits a signal for locking the heating unit 11 in the heating stop state. Thereby, for example, even when the user's body touches the operation unit 13 of the cooking appliance 20 during cleaning or maintenance of the range hood 10, the cooking appliance 20 can be prevented from malfunctioning. Therefore, the operation of the cooking appliance 20 can be made appropriate for the user with respect to the state of the range hood 10.

[0117] Also, in the present embodiment, as shown in FIG. 3, when the oil tray detection sensor 9b detects that the oil tray 3 is removed, the transmitter 6a transmits a signal to lock the heating unit 11 in the heating stop state. If the oil tray 3 is forgotten to be attached, oil will accumulate on the rectifying plate 8, and there is a risk that the oil will drip when the rectifying plate 8 is opened (when in the non-use state). Therefore, when the removed state of the oil tray 3 is detected, by locking the heating unit 11 in the heating stop state by the transmitter 6a, it is possible to notify the user that the device is in an abnormal state, and it is possible to prevent oil from accumulating on the rectifying plate 8.

[0118] Also, in the present embodiment, as shown in FIG. 3, when the fan detection sensor 9c detects that the exhaust fan 2 is removed, the transmitter 6a transmits a signal to lock the heating unit 11 in the heating stop state. If the exhaust fan 2 is in the removed state, the range hood 10 cannot exhaust air. Therefore, in this state, it is desirable to set the heating unit 11 to the heating stop state. Also, when the exhaust fan 2 is in the removed state and the fan motor 2a that rotates the exhaust fan 2 is driven, depending on the specifications, the temperature fuse of the fan motor 2a may blow, leading to replacement.

[0119] Also, in the present embodiment, as shown in FIG. 3, the transmitter 6a transmits a signal to lock the heating unit 11 in the heating stop state based on the operation signal of the lock switch 5a. Thereby, for example, when cleaning or maintaining the range hood 10, even if the user's body touches the operation unit 13 of the cooking heater 20, it is possible to prevent the cooking heater 20 from malfunctioning. Therefore, it is possible to make the operation of the cooking heater 20 appropriate for the user with respect to the state of the range hood 10.

[0120] Also, the state where the exhaust fan 2 is stopped even though the rotation state of the exhaust fan 2 is selected by the fan operation changeover switch 5b (FIG. 2) is, for example, a failure state of the range hood 10. If heating is performed by the heating unit 11 of the cooking heater 20 in a state where the range hood 10 has failed in this way, it is impossible to exhaust the gas generated during cooking.

[0121] In contrast, in the present embodiment, as shown in FIG. 3, in the above failure state, the heating unit 11 is locked in the heating stop state. As a result, even if the user tries to start heating with the cooking heater 20 without knowing the above failure state, the heating of the cooking heater 20 is not started. Therefore, it is possible to prevent the exhaust gas generated by the cooking using the heating unit 11 from filling the room.

[0122] Also, in the present embodiment, as shown in FIG. 3, when the attachment state of the exhaust fan 2 is detected by the fan detection sensor 9c, the attachment state of the oil tray 3 is detected by the oil tray detection sensor 9b, and the usage state of the rectifying plate 8 is detected by the rectifying plate detection sensor 9a, the transmitting unit 6a transmits a signal for releasing the lock of the heating stop state in the heating unit 11. As a result, when all the members (the exhaust fan 2, the oil tray 3, and the rectifying plate 8) removed during cleaning or maintenance are attached, the lock of the heating stop state in the heating unit 11 is released. Therefore, it is possible to prevent the attachment of the exhaust fan 2, the oil tray 3, and the rectifying plate 8 from being forgotten. Further, since the lock is automatically released based on the detection signal, the operation of releasing the lock by the user becomes unnecessary.

[0123] Also, in the present embodiment, as shown in FIG. 3, at least one of the range hood 10 and the cooking heater 20 includes notification units 22 and 32 that notify that the heating unit 11 is locked in the heating stop state when the receiving unit 12b receives a signal from the transmitting unit 6a. As a result, the user can recognize by vision, hearing, etc. that the heating unit 11 is locked in the heating stop state.

[0124] The embodiments disclosed this time should be considered as illustrative in all respects and not restrictive. The scope of the present invention is shown not by the above description but by the claims, and it is intended that all modifications within the meaning and scope equivalent to the claims are included.

Explanation of Reference Numerals

[0125] 1 casing, 1a decorative panel, 2 exhaust fan, 2a fan motor, 3 oil tray, 4 hood section, 5, 13 operation section, 5a lock switch, 5b fan operation changeover switch, 5c timer switch, 5d lighting switch, 5e cleaning switch, 5f constant ventilation switch, 6a, 12a transmitting section, 6b, 12b receiving section, 7a mounting bracket, 7b hook section, 8 rectifying plate, 8a locking fitting, 8b connecting fitting, 9a rectifying plate detection sensor, 9b oil tray detection sensor, 9c fan detection sensor, 9d fan rotation detection sensor, 10 range hood, 11 heating section, 14 top plate, 20 cooking heater, 21, 31 controller, 22, 32 notification section, 30 cooking system, 50 wall surface.

Claims

1. A range hood disposed above a cooking appliance having a heating unit, an exhaust fan, an oil tray located below the exhaust fan, a rectifying plate located below the oil tray, a state detection sensor for detecting at least one installation state of the oil tray, the rectifying plate, and the exhaust fan, an operation unit for operating the operating state of the range hood, and a transmitting unit that transmits a signal for locking the heating unit in a heating stop state so that the heating unit does not receive a heating operation based on at least one of a detection signal indicating the installation state detected by the state detection sensor and an operation signal indicating the operation content input to the operation unit. A range hood comprising:

2. The state detection sensor has a rectifying plate detection sensor for detecting a used state and a non-used state of the rectifying plate, and when the rectifying plate detection sensor detects the non-used state of the rectifying plate, the transmitting unit transmits a signal for locking the heating unit in the heating stop state. The range hood according to claim 1.

3. The state detection sensor has an oil tray detection sensor for detecting an attached state and a removed state of the oil tray, and when the oil tray detection sensor detects the removed state of the oil tray, the transmitting unit transmits a signal for locking the heating unit in the heating stop state. The range hood according to claim 1 or claim 2.

4. The state detection sensor has a fan detection sensor for detecting an attached state and a removed state of the exhaust fan, and when the fan detection sensor detects the removed state of the exhaust fan, the transmitting unit transmits a signal for locking the heating unit in the heating stop state. The range hood according to any one of claims 1 to 3.

5. The operation unit has a lock switch for locking the exhaust fan in a rotation stop state, and the transmitting unit transmits a signal for locking the heating unit in the heating stop state based on an operation signal for locking the exhaust fan in the rotation stop state at the lock switch. The range hood according to any one of claims 1 to 4.

6. The operation unit has a fan operation changeover switch for selectively operating a start state and a stop state of the exhaust fan, and the state detection sensor has a fan rotation detection sensor for detecting rotation of the exhaust fan, When the fan rotation detection sensor detects the stopped state of the exhaust fan in a state where the startup state of the exhaust fan is selected by the fan operation changeover switch, the transmitting unit transmits a signal for locking the heating unit in the heating stopped state. The range hood according to any one of claims 1 to 5.

7. The state detection sensor is a fan detection sensor for detecting the mounting state of the exhaust fan, an oil tray detection sensor for detecting the mounting state of the oil tray, a rectifying plate detection sensor for detecting the used state and the unused state of the rectifying plate, and when the mounting state of the exhaust fan is detected by the fan detection sensor, the mounting state of the oil tray is detected by the oil tray detection sensor, and the used state of the rectifying plate is detected by the rectifying plate detection sensor, the transmitting unit transmits a signal for releasing the lock of the heating stopped state in the heating unit. The range hood according to claim 1.

8. a range hood according to any one of claims 1 to 7, and a cooking heater having a receiving unit for receiving a signal from the transmitting unit, a cooking heating system in which the heating unit is locked in the heating stopped state based on the signal received by the receiving unit.

9. The cooking heating system according to claim 8, wherein at least one of the range hood and the cooking heater has a notification unit for notifying that the heating unit is locked in the heating stopped state.

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