JP5151178B2 - Induction heating cooker - Google Patents

Description

  The present invention relates to a configuration for controlling a ventilation fan from an induction heating cooker used in general homes and the like.

Conventionally, there has been an induction heating cooker of this type that controls an exhaust fan by transmitting an infrared signal through a glass top plate (see, for example, Patent Document 1).
JP 2003-83550 A

  However, in the conventional configuration, the top plate is generally formed of crystallized glass from the characteristics of heat resistance, thermal shock and strength. First, crystallized glass has a problem that infrared rays are not easily transmitted and attenuation is large, and secondly, non-transparent and white crystallized glass does not transmit infrared rays.

  This invention solves the said conventional subject, and it aims at providing the induction heating cooking appliance which can transmit signals, such as infrared rays, to a ventilation fan efficiently.

In order to solve the above-mentioned conventional problems, an induction heating cooker according to the present invention provides a top plate that roughly covers the top surface, a heating coil disposed below the top plate in the main body, and supplies power to the heating coil. A control circuit that has a cover placed thereon, an air inlet provided on the top surface, a cooling device that sucks indoor air from the air inlet and blows and cools the control circuit and the heating coil; A transmission device that transmits a signal upward from the top surface excluding the top plate through the cover, and the cover has a communication hole at an upper position of the transmission device, and the cover has a substantially rectangular shape. Since there is no left-right or front-back direction, the communication hole is provided with a plurality of communication holes in the cover so that the communication hole is always located above the transmitting device according to the set direction of the cover. There, the control circuit, the An induction cooking device for controlling a ventilation fan of signal communication apparatus is provided with a receiver for receiving through the communication holes, in which the structure provided with the originating device to the intake mouth.

  This makes it possible to transmit and receive signals efficiently with little attenuation of signals such as infrared rays, and it is possible to reduce costs because there is a margin in the output of the transmitting device and the receiving device.

In addition, since the wind always flows in the vicinity of the transmitting device, stable communication is possible without blocking dust and dirt on the transmitting device and without blocking transmission / reception signals. Further, by positioning the transmitting device below the cover, even if dust or foreign matter falls, the cover is protected by the cover, so that the infrared signal can be transmitted without damaging the transmitting device.

  Since the induction heating cooker of the present invention transmits signals such as infrared rays from the top surface excluding the top plate, there is little attenuation of signals such as infrared rays, and efficient signal transmission / reception is possible. Costs can be reduced because there is room for output and the like.

In addition, since the wind always flows in the vicinity of the transmitting device, stable communication is possible without blocking dust and dirt on the transmitting device and without blocking transmission / reception signals. Further, by positioning the transmitting device below the cover, even if dust or foreign matter falls, the cover is protected by the cover, so that the infrared signal can be transmitted without damaging the transmitting device.

1st invention has the top plate which covers a top surface roughly, the heating coil arrange | positioned in the main body under the said top plate, the control circuit which supplies electric power to the said heating coil, and the cover put on it From the air inlet provided in the top surface, a cooling device that sucks indoor air from the air inlet and blows and cools the control circuit and the heating coil, and from the top surface passing through the cover and excluding the top plate A transmission device for transmitting a signal upward, the cover has a communication hole at an upper position of the transmission device, and the cover has a substantially rectangular shape and has no left-right or front-back direction, A plurality of communication holes are provided in the cover so that the communication holes are always located above the transmitter according to the set direction of the cover, and a signal from the transmitter passes through the communication hole. comprising a receiver for receiving Te ventilation The induction heating cooker that controls the air intake and the transmission device provided in the intake port allows less efficient attenuation of signals such as infrared rays and enables efficient signal transmission / reception, and transmission and reception of the transmission device. Since there is a margin in the output of the apparatus, the cost can be reduced.

In addition, since the wind always flows in the vicinity of the transmitting device, stable communication is possible without blocking dust and dirt on the transmitting device and without blocking transmission / reception signals. Also, cover the transmitter
By positioning it below, even if dust or foreign matter falls, it is protected by the cover, so that an infrared signal can be transmitted without damaging the transmitter.

A second invention is, in particular, the originating device, with the structure provided in the intake mouth with from the rear of the top surface the heating coil excluding the top plate, the operation for people and pan handles, etc. Enables stable transmission and reception without blocking the transmission and reception signals.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a perspective view showing the appearance of an induction heating cooker according to the first embodiment of the present invention.

  In FIG. 1, a top plate 4 made of crystallized glass is fixed to a substantially central portion of the top surface 3 of the main body 2 set by dropping the upper surface of the kitchen 1. The top plate 4 has a transparent glass printed on the upper surface and the lower surface, and a black semi-transparent one as a whole. At the rear of the top surface 3, an intake port 5 is disposed on the right side and an exhaust port 6 is disposed on the left side. A cover 7 is placed on the intake port 5 and the exhaust port 6. Since the cover 7 is only placed, it can be easily removed for cleaning or the like.

  The cover 7 is a substantially rectangular sheet metal part subjected to enamel processing, and is provided with a large number of air holes 8 like punching metal. It is placed on the intake port 5 and the exhaust port 6 to prevent large dust and foreign matter from entering the main body 2.

  In the main body 2 below the top plate 4, two heating coils 9 are arranged on the left and right sides near the center. The heating coil 9 is located about several mm away from the lower surface of the top plate 4. On the top plate 4, one heating coil circle 10 indicating the position of the heating coil 9 is drawn on the left and right in the vicinity of the center. One radiant heater circle 12 showing the radiant heater 11 is drawn at the rear of the top 4. A radiant heater 11 is disposed below the radiant heater circle 12 and below the top plate 4.

  When the cover 7 is removed, an infrared signal transmitter 13 is fixed in the vicinity of the entrance of the intake port 5. An infrared signal is transmitted upward from the transmission device 13 through the cover 7. The transmitter 13 is configured by housing a circuit in which an infrared LED emitting infrared rays is soldered to a control board in a casing.

  A ventilation fan 14 is fixed to the wall above the main body 2. The ventilation fan 14 is provided with an infrared signal receiver 15. The ventilation fan 14 is controlled by a signal received by the receiving device 15. The ventilation fan 14 is provided with a manual operation switch 16 in addition to the receiving device 15, and when ventilation is necessary, the manual operation switch 16 provided in the ventilation fan 14 can be manually operated for ventilation.

  The cover 7 is provided with a communication hole 17 in a portion that contacts the upper position of the transmission device 13 when the cover 7 is set in the intake port 5 or the exhaust port 6. Infrared light passes through the communication hole 17 and reaches the receiver 15 of the ventilation fan 14. Since the cover 7 has a substantially rectangular shape and does not have left / right or front / rear direction, the communication hole 17 is always positioned above the transmitter 13 according to the setting direction of the cover 7 as necessary. A plurality of communication holes 17 are provided in the cover 7.

  The size of the communication hole 17 is a hole having a size that does not block the infrared rays emitted by the infrared LED that emits a signal from the transmitter 13.

  By forming the communication hole 17 in a size larger than the radiation range of the infrared LED that emits the infrared rays of the transmission device 13, the emitted infrared rays can reach the reception device 15 without being attenuated, and the reception device 15 is attached. Even if the position changes, communication can be performed up to the full range where the emission of the LED reaches the receiving device 15. Since the transmitting device 13 is fixed so as to emit infrared rays upward, the transmitted infrared rays pass through the cover 7 and simultaneously radiate upward from the inside of the main body 2 through the top surface 3.

  The operation unit 18 is located at the right front portion of the main body 2. The operation unit 18 is provided with a ventilation operation switch 21 together with a switch 19 for operating the energization of the heating coil 9 and the radiant heater 11 and a display unit 20 for displaying the energization state. The ventilation operation switch 21 is a switch for operating the ventilation fan 14 via the transmitter 13 and the receiver 15.

  Since the transmission device 13 is located behind the main body 2, even if a person operating the operation unit 18 is near the main body 2 and moves his hand or head, the communication device 13 enters between the transmission device 13 and the reception device 15 and communicates. Will not interfere. Moreover, since the inlet port 5 and the exhaust port 6 are located behind the main body 2, the handle 23 of the pan 22 does not interfere with communication.

  The person operating the operation unit 18 and the handle 23 of the pan 22 placed on the heating coil 9 do not block the signal from the transmission device 13, and the transmission device 13 and the reception device 15 can perform stable communication.

  A control circuit 24 is incorporated below the heating coil 9 in the main body 2. The control circuit 24 supplies power to the heating coil 9, the sheathed heater 27, and the operation unit 18.

  In the main body 2 of the induction heating cooker that consumes several kilowatts of power, the heating coil 9 self-heats due to Joule heat. During heating, a high frequency current of several tens of amperes flows through the heating coil 9 and self-heats due to Joule heat. Further, since a circuit for supplying a high-frequency current to be supplied to the heating coil 9 is made of a semiconductor such as an IGBT in the control circuit 24, self-heating occurs when a high-frequency current of several tens of amperes flows through this semiconductor. A cooling fan 25 as a cooling device is built in the main body 2 in order to cool the heating coil 9 and the heat generated by the semiconductor. The cooling fan 25 draws indoor air from the intake port 5, cools the control circuit 24, the heating coil 9, and the like, and exhausts exhaust heat from the exhaust port 6 as hot air.

  Since the transmitter 13 is fixed in the vicinity of the entrance of the intake port 5, the wind flows in the vicinity of the transmitter 13 while the cooling fan 25 is being driven. As a result, dust and debris appear on the infrared LED of the transmitter 13. Even if it is attached, the air is blown by the wind passing through the air inlet 5, so that dust and dust are not attached to the transmitter 13 and the signal is not weakened, and stable transmission / reception is possible. Moreover, since the cover 7 is located above the transmission device 13, it prevents the transmission device 13 from being damaged due to the fall of foreign matter. Further, since the wind flows in the vicinity of the transmitter 13 by the cooling fan 25 during cooking, it is possible to prevent moisture and condensation.

  A fish grill 26 is provided on the left side of the front surface of the main body 2. A seeds heater 27 is provided in the grill 26, and the seeds heater 27 can be disposed at a position where the fish is sandwiched between the upper and lower sides so that both sides can be baked simultaneously. The front surface of the grill 26 is a door 28, but the rear part communicates with the exhaust port 6, and smoke generated when cooking at the grill 26 passes through the cover 7 and is diffused into the room.

  The ventilation fan 14 is provided above the top surface 3 of the main body 2, and the transmission device 13 and the manual operation switch 16 are provided. Steam generated from the cooked food in the pan 22 heated by the heating coil 9, smoke generated from the grill 26 and discharged into the room through the exhaust port 6, rises above the top surface 3 as an updraft. Therefore, the ventilation fan 14 is installed in order to discharge these outside.

  About the induction heating cooking appliance comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

First, in FIG. 1, the pan 22 is placed on the heating coil circle 10 indicating the position of the pan 22 on the top of the heating coil 9 of the top plate 4. The switch 19 of the operation unit 18 is operated to supply power from the control circuit 24 to the heating coil 9, and power is supplied from the heating coil 9 to the bottom of the pan 22 by electromagnetic induction. Eventually, the pot 22 is heated to heat the food in the pot 22, and when steam is generated from the food or when the fish is grilled on the grill 26, smoke generated when the fish is baked by the seeds heater 27 is discharged from the exhaust port 6. Are discharged into the room together with the exhaust of the cooling air by the cooling fan 25.

  When ventilation is required, the ventilation operation switch 21 of the operation unit 18 is operated, and an infrared signal is transmitted from the transmission device 13 via the control circuit 24. The signal passes through the communication hole 17 of the cover 7 and reaches the receiving device 15 of the ventilation fan 14, and the ventilation fan 14 is driven. When cooking is finished and the ventilation fan 14 is stopped, by operating the ventilation operation switch 21 again, the control circuit 24 transmits a signal again from the transmission device 13 and is received by the reception device 15 of the ventilation fan 14 to receive the ventilation fan 14. Stop for about 10 minutes.

  Further, in the vicinity of the ventilation operation switch 21, there is provided an attached switch 30 for operating the lighting device 29 provided in the ventilation fan 14 and the strength of the exhaust fan 14 and operating the illumination device 29 provided in the ventilation fan 14. This makes it possible to perform detailed interlocking operations. When the attached switch 30 is operated, the control circuit 24 drives the transmitting device 13 to transmit a signal, and the receiving device 15 receives this signal, and the ventilation fan 14 performs a desired operation.

  That is, when operating the ventilation fan 14, the ventilation operation switch 21 of the operation part 18 is operated. When the ventilation switch 21 is operated, the control circuit 24 drives the transmitter 13 and transmits an infrared drive signal from the transmitter 13. The signal passes through the communication hole 17 of the cover 7 and reaches the receiving device 15 of the ventilation fan 14, and the ventilation fan 14 is activated. When the desired ventilation is completed, the ventilation operation switch 21 of the operation unit 18 is operated, and a stop signal is transmitted from the transmission device 13 by the control circuit 24. The stop signal passes through the communication hole 17 of the cover 7 and reaches the receiving device 15 of the ventilation fan 14, and the receiving device 15 detects the signal and stops the ventilation fan 14 after 10 minutes. In order to directly operate the ventilation fan 14 without using the ventilation operation switch 21 of the operation unit 18, the manual operation switch 16 provided in the ventilation fan 14 may be operated.

  As described above, in the first embodiment, the signal for driving the ventilation fan 14 can be made to reach the receiving device 15 without attenuating the infrared signal by disposing the transmitting device 13 in the vicinity of the entrance of the intake port 5.

  Further, by arranging the transmitter 13 near the entrance of the intake port 5, stable transmission and reception can be performed without the signal being blocked by the body of the person who operates the operation unit 18 or the handle 23 of the pot 22.

  Further, by arranging the transmitting device 13 near the inlet 5 entrance, wind can pass through the vicinity of the transmitting device 13 so that a stable signal can be transmitted over a long period of time without dust and dirt adhering to the transmitting device 13. it can.

  Furthermore, since the transmitting device 13 is positioned below the cover 7, even if dust or foreign matter falls, it is protected by the cover 7, so that an infrared signal can be transmitted without damaging the transmitting device 13.

( Reference form 1 )
FIG. 3 is a perspective view of the induction heating cooker in Reference Embodiment 1 of the present invention. The same reference numerals as those in the first embodiment in the figure mean the same name and the same shape.

An operation unit 40 that is long in the left-right direction is arranged in front of the top surface 3. The operation unit 40 is located at the front portion of the top frame 41 formed by pressing a stainless steel plate. The operation unit 40 incorporates an operation switch substrate 42 in the top frame 41 and heats a PET resin film as a resin film on the top surface of the top frame 41. The operation part 40 is formed by adhering the membrane 43 formed by the intermediate press. A switch shape 44 is printed on the membrane 43 of the operation unit 40, and at the same time, the switch shape 44 is made easy to understand by embossing. When the switch 45 is pressed, the tact switch 46 fixed to the operation switch board 42 with solder is operated. The operation unit 40 is positioned in front of the top frame 41, so that it is positioned in front of the center of the heating coil 9 (on the side of the person who operates it).

  The operation unit 40 is provided with a ventilation fan signal transmission unit 47 as a transmission device at a position close to both ends together with the switch 45. The ventilation fan signal transmitter 47 corresponds to the transmitter 13 of the first embodiment. The ventilation fan signal transmitter 47 is disposed near both ends of the operation unit 40 in the longitudinal direction. This is to prevent the infrared rays from being blocked by a human hand or head when the switch 45 for performing a normal heating operation is operated, thereby preventing communication. Further, the ventilation operation switch 49 for operating the ventilation fan signal transmission unit 47 is arranged near the center of the operation unit 40 which is long on the left and right, so that the hand or head of the person who operates more can receive the infrared signal from the ventilation fan signal transmission unit 47. Since it is not blocked, stable communication can be performed.

  The ventilation fan signal transmitter 47 is formed on the operation switch board 42 by being fixed together with the switch 45 by soldering. The membrane 43 positioned on the ventilation fan signal transmission unit 47 is printed with a semi-transparent transmission unit shape 48 so that the infrared signal from the ventilation fan signal transmission unit 47 is less attenuated and easily penetrated with thin ink.

  Since the transmitter shape 48 has a wider range than the infrared radiation range transmitted from the ventilation fan signal transmitter 47, all infrared rays transmitted from the ventilation fan signal transmitter 47 are transmitted through the transmitter shape 48 and the ceiling frame 41. Is emitted upward. That is, the infrared rays transmitted from the ventilation fan signal transmission unit 47 are transmitted through the transmission unit shape 48 on which the translucent printing of the membrane 43 adhered to the operation unit 40 of the ceiling frame 41 is applied, and penetrate the ceiling frame 41. Is emitted upward.

  The infrared signal from the ventilation fan signal transmission unit 47 passes through the printing of the transmission unit shape 48 of the membrane 43 of the operation unit 40 and is attenuated slightly, but is diffused upward as it is and reaches the receiving device 15 of the ventilation fan 14. . That is, when infrared rays are transmitted upward from the ventilation fan signal transmitter 47 built in the top frame 41, infrared rays are emitted upward through the translucent transmitter shape 48 of the membrane 43 bonded to the top frame 41. Then, it reaches the receiving device 15 of the ventilation fan 14.

  As for the ventilation fan signal transmission unit 47 and the reception device 15, a transmission function is added to the reception device 15, and a reception function is added to the ventilation fan signal transmission unit 47. Thereby, bidirectional communication between the main body 2 and the ventilation fan 14 can be performed. By sending the state of the ventilation fan 14 to the main body 2, it is possible to control the ventilation fan 14 more finely, always grasp the state of the ventilation fan 14 on the main body 2 side, and always keep the state of the main body on the ventilation fan 14 side. The ventilating fan 14 and the main body 2 can detect both abnormalities and stop or notify them, and can perform a safer operation.

  The operation of the ventilation fan 14 is controlled by the control circuit 24 or driven by operating the manual operation switch 16 in the same manner as described in the first embodiment.

As described above, in the present first reference, by providing a near both ends of the long operating portion 40 to the right and left disposed in front of the ventilation fan signal generation unit 47 from the heating coil 9 center, ventilators hand or head which has been operated Since transmission / reception between the signal transmission unit 47 and the receiving device 15 is not hindered, stable communication can be performed. Further, the operation unit 40 is configured by adhering the membrane 43 to the top frame 41, so that the transmitting portion shape 48 through which infrared rays pass can be formed by printing as part of the printing of the membrane 43. There is no need to increase the cost and it is economical. In addition, by forming the transmitter shape 48 with a part of the membrane 43, even if dirt is attached, it can be easily wiped off, easy to clean, and stable communication is possible.

  In addition, by providing the ventilation fan signal transmitter 47 in the operation unit 40 located on the front side of the top surface 3, even if dust or dust adheres to the transmitter part 48, before the user uses it for cooking. Since the transmitting portion shape 48 is formed by a part of the membrane 43, it can be easily wiped off.

In addition, although infrared rays were used for the signal in Embodiment 1 and Reference Embodiment 1 , radio high-frequency radio waves may be used, and signal transmission / reception between the transmission device 13 or the ventilation fan signal transmission unit 47 and the reception device 15 is possible. I hope you can.

As described above, the induction heating cooker according to the present invention includes a top plate that roughly covers the top surface, a heating coil disposed below the top plate in the main body, and a control circuit that supplies power to the heating coil. controls a cooling device that cools the control circuit and the heating coil, a ventilation fan having a receiver and a transmitter for transmitting a signal from the top surface except for the top plate, receives a signal before Symbol transmitter With this configuration, infrared signals etc. are transmitted from the top surface excluding the top plate, so there is little attenuation of infrared signals, etc., and efficient signal transmission / reception is possible. Since there is room, the cost can be reduced, so that it can be applied to other cooking devices.

The perspective view of the induction heating cooking appliance in Embodiment 1 of this invention The perspective view of the induction heating cooking appliance and ventilation fan in Embodiment 1 of this invention The perspective view of the induction heating cooking appliance in the reference form 1 of this invention

3 Top surface 4 Top plate 5 Intake port 6 Exhaust port
7 Cover 9 Heating coil 13 Transmitter 14 Ventilation fan 15 Receiver
17 Communication hole 18 Operation part 24 Control circuit 25 Cooling fan (cooling device)

Claims (2)

A top plate that roughly covers the top surface, a heating coil disposed below the top plate in the main body, a control circuit that supplies power to the heating coil, and a cover that is placed on the top surface are provided on the top surface. An intake port, a cooling device that sucks indoor air from the intake port and blows and cools the control circuit and the heating coil, and a transmission device that transmits a signal upward from the top surface excluding the top plate The cover has a substantially rectangular shape with no left / right or front / rear directionality, and a plurality of the communication holes are provided so that the communication holes are always positioned above the transmitting device according to the set direction of the cover. The control circuit is an induction heating cooker that controls a ventilating fan including a receiving device that receives a signal of the transmitting device through the communication hole, and the transmitting device is disposed in the intake port. Induction heating cooker provided. The induction heating cooker according to claim 1, wherein the transmitter is provided in the intake port provided on the top surface behind the heating coil excluding the top plate.

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