JP6683492B2 - Rice cooker - Google Patents

Description

  The present invention relates to a rice cooker including a safety device.

  There is known a rice cooker that cooks rice by heating a rice cooker with a burner in a heating chamber (Patent Document 1).

  In the gas rice cooker described in Patent Document 1, when the rice cooker reaches the rice cooking temperature, the thermal response device detects this and turns off the electric circuit to the main solenoid valve of the main gas circuit corresponding to each rice cooker. The main solenoid valve shuts off the main gas circuit, automatically extinguishes the main burner, then turns off the electric circuit to the original solenoid valve, and the original solenoid valve shuts off the gas introduction circuit. . As a result, even if a plurality of rice cookers are started at the same time, the main solenoid valve shuts off the gas introduction circuit after the rice has been cooked at the latest, so that the gas introduction path is shut off immediately after the rice has been cooked, thus ensuring safety. It is disclosed that they have secured it.

Japanese Utility Model Laid-Open No. 59-67125

  In the technology described in Patent Document 1, a safety device that shuts off gas after the completion of rice cooking is attached, and it is possible to cook rice without any abnormalities as a device, and it is emphasized that it is safe. There is a risk that the operator may open the opening / closing door of the heating chamber and get in contact with the flame to get burned during the work, and the safety has not been sufficiently examined.

  It is an object of the present invention to provide a rice cooker that is highly safe and has high versatility by preventing burns and the like of workers.

  The rice cooker of the present invention is a rice cooker for cooking rice, which is attached to a casing defining a heating chamber in which a rice cooker can be arranged and is openably and closably attached to the casing, and opens and closes the front surface of the heating chamber. An open / close door, a gas burner that heats the heating chamber, a display unit that displays a combustion state of the gas burner, and a combustion state of the gas burner is detected, and a display operation of the display unit is controlled according to the detected combustion state. A control unit for controlling the display operation of the display unit and at least one connectable to the operation panel and a safety device for security of the rice cooker. A control board having two connection terminals.

  As one aspect of the rice cooker of the present invention, for example, the control board includes an opening / closing detection sensor connection terminal to which an opening / closing detection sensor that detects an open / closed state of the opening / closing door is connected.

  As one aspect of the rice cooker of the present invention, for example, the control board locks the open / close door when combustion in the gas burner is started when the open / close detection sensor detects the closed state of the open / close door. An opening / closing door lock mechanism connection terminal connected to the opening / closing door lock mechanism is provided.

  As one aspect of the rice cooker of the present invention, for example, a plurality of opening / closing doors are provided, and the opening / closing detection sensor connection terminal and the opening / closing door lock mechanism connection terminal are provided for each opening / closing door.

  As one aspect of the rice cooker of the present invention, for example, the control board includes a gas leak CO alarm connection terminal connected to a gas leak CO alarm that detects CO and gas leak generated during incomplete combustion by the gas burner. Prepare

  In the rice cooker of the present invention, the combustion state of the gas burner can be displayed on the display unit under the control of the control unit, and the combustion in the gas burner can be confirmed without the operator having to open the opening / closing door, so that the safety of the worker can be secured. . In addition, various safety devices can be expanded through the control board, and the control unit can control the combustion stop in the gas burner according to the output signal from the safety device, which improves safety and provides a versatile rice cooking device. it can.

The front view which shows an example of the rice cooking device which concerns on this invention. The right view corresponding to FIG. The block diagram which shows an example of the control part of the rice cooker which concerns on this invention. The perspective view which shows an example of the opening / closing door of the rice cooker which concerns on this invention. The partial perspective view from the right side which shows an example of the rice cooker which concerns on this invention, and the lower opening-and-closing door is open. The partial perspective view from the front corresponding to FIG.

  Hereinafter, a preferred embodiment of the rice cooker according to the present invention will be described in detail with reference to FIGS. 1 to 6.

  FIG. 1 is a front view showing an example of a rice cooker, and FIG. 2 is a side view. The rice cooker will be described in detail with reference to FIGS.

  The rice cooker 1 of the present embodiment is used for cooking rice, and has a heating chamber 10 that accommodates a rice cooker 3 in a demarcated region of a housing 2, and a heating chamber that is attached to the housing 2 so as to be openable and closable. An opening / closing door 20 that opens and closes the front surface of 10, a gas burner 11 that heats the heating chamber 10, a solenoid valve (not shown) that supplies and stops gas to the gas burner 11, and a display unit that displays a combustion state by the gas burner 11. And 30. In the present embodiment, when the rice cooker 1 is installed, the housing 2 has a vertically long substantially rectangular parallelepiped shape, and three heating chambers 10 are vertically arranged, and at the same time, three opening / closing doors 20 are also vertically arranged. The rice cooker 1 attached to the housing 2 is a three-dimensional rice cooker including a plurality of heating chambers 10.

  The display units 30 are arranged on the upper side of the front surface of the rice cooker 1, and three display units 30 are arranged in the upper and lower sides corresponding to the respective heating chambers 10. That is, the upper display section 30a corresponding to the upper heating chamber 10a, the middle display section 30b corresponding to the middle heating chamber 10b, and the lower display section 30c corresponding to the lower heating chamber 10c are arranged. Although the individual display units 30a, 30b, and 30c have been described, one integrated display unit 30 may be used.

  A control unit 40 that is electrically connected to the display unit 30 is arranged, and the control unit 40 is connected to the operation panel 50 that controls the display operation of the display unit 30. Although the display unit 30 is mounted on the operation panel 50, the concept included in the operation panel 50 may be used. The combustion state by the gas burner 11 displayed by the display unit 30 is the cooking time, the temperature of the heating chamber 10 and the like, and the indicator light 31 of the display unit 30 lights up while the gas burner 11 is burning, so that the operator can easily burn the gas burner. You can see the burning of 11. The indicator lamp 31 is lit so that the controller 40 receives the electric current flowing from the frame rod that senses the flame generated in the gas burner portion and the indicator lamp 31 of the indicator 30 is lit. In addition, the operation panel 50 is provided with operation buttons and the like, and it is possible to select, for example, ignition / extinction of the gas burner 11, adjustment of cooking, timer rice, and type of rice (white rice, non-washed rice, cooked rice, etc.).

  The housing 2 of the present embodiment is supported by a plurality of mounts 4, and a gas supply pipe 5 is provided on the upper portion of the housing 2. The rice cooker 1 is connected to a cord extended from the side surface of the housing 2 and is connected to a power source for supplying power to the rice cooker 1, and can be connected if necessary, and is generated during incomplete combustion by the gas burner 11. And a gas leak CO alarm device 8 for detecting CO and gas leak. The gas leakage CO alarm device 8 may be installed on a wall, a ceiling, a floor, or the like, and may be any location depending on the installation position of the rice cooker 1 and the gas type.

  FIG. 3 is a block diagram showing an example of the control unit 40. The control unit 40 will be described with reference to FIG.

  The control unit 40 includes a CPU, a ROM, a RAM, and the like (not shown), controls the entire rice cooking device 1 by a program, and controls the operation panel 50 and the control board 60 electrically connected to the operation panel 50 via terminals and the like. It has and. Then, the control unit 40 detects the combustion state of the gas burner 11 and controls the display operation of the display unit 30 according to the detected combustion state. In the present embodiment, three operation panels 50 are provided, and an upper operation panel 50a connected to the upper display section 30a to operate the upper heating chamber 10a and an intermediate operation operation connected to the middle display section 30b to operate the intermediate heating chamber 10b. The lower operation panel 50c is connected to the panel 50b and the lower display section 30c to operate the lower heating chamber 10c.

  The control board 60 has a plurality of connection terminals 70 that can be connected to a safety device 80 for security of the rice cooking device 1 described later, in addition to the terminals that are electrically connected to the operation panel 50 described above. The connection terminal 70 in the present embodiment includes a connection terminal 71a for the open / close detection sensor of the upper open / close door 20a, a connection terminal 71b for the open / close detection sensor of the middle open / close door 20b, and an open / close detection sensor of the lower open / close door 20c arranged on the left side of the drawing. Connection terminal 71c and gas leak CO alarm device connection terminal 72 for the gas leak CO alarm device 8, ventilation fan connection terminal 73 arranged on the right side of the drawing, open / close door lock mechanism connection terminal 74a of the upper open / close door 20a, middle stage It has an opening / closing door lock mechanism connection terminal 74b of the opening / closing door 20b and an opening / closing door lock mechanism connection terminal 74c of the lower opening / closing door 20c.

  By providing the above-described various connection terminals 70 that can be electrically connected to the safety device 80, the control unit 40 in which a program corresponding to the safety device 80 is installed can detect an abnormality of the rice cooking device 1 and the abnormality. It will be possible to respond in accordance with. Although the number of the connection terminals 70 in the present embodiment is as described above, it is possible to attach the connection terminals 70 for other safety devices 80, and the control unit 40 having high versatility can be provided.

  The above-mentioned "detection of abnormality" is, for example, a case where the operator has opened the opening / closing door 20 during the combustion of the gas burner 11, or gas leakage has occurred. An abnormal signal when the open / close door 20 is opened is sent to the open / close detection sensor connection terminal 71, and an abnormal signal when gas leaks is sent to the gas leak CO alarm device connection terminal 72, respectively. The valve actuates and shuts off the gas supply. At this time, for each heating chamber 10, the supply of gas to the gas burner 11 in one heating chamber 10 (for example, the heating chamber 10a) that has detected an abnormality is stopped, and the other heating chamber 10 (for example, the heating chamber 10b) is stopped. There are cases where the problem does not occur even if the supply to a certain gas burner 11 is continued, and cases where the supply of the gas to all of the gas burners 11 in each heating chamber 10 is stopped by detecting an abnormality. Thereby, the safety for the worker is secured while considering the workability of the rice cooker 1.

  Then, if a signal notifying that the opening / closing door is opened during the combustion of the gas burner is sent to the opening / closing detection sensor connection terminal 71, the gas burner 11 is displayed on the display section related to the heating chamber that has detected the abnormality when the opening / closing door 20 is opened. It is displayed that the supply of gas to the chamber has been stopped, and the operator can easily determine in which heating chamber the abnormality has occurred. Of course, when the opening / closing door 20 is open, no ignition occurs.

  Further, if the gas leak CO alarm device 8 and the gas leak CO alarm device connecting terminal 72 are electrically connected, the CO generated during the incomplete combustion by the gas burner 11 is detected, and the control unit 40 operates the solenoid valve. Safety is ensured by stopping the gas supply via. At the same time, a warning is displayed on the display unit 30. Note that a warning sound may be emitted at the same time as the gas stop display and the warning display at the time of abnormality.

  The connection of each connection terminal 70 to the safety device 80 is optional, and it is possible to freely select what kind of safety device 80 to attach, with an emphasis on the safety of the operator. On the other hand, a program is installed in advance so that it can be used. This ensures the interlocking of the control of the safety device 80 added later and the combustion control by the gas burner 11 for cooking rice. Further, since the display unit 30 for displaying the combustion state of the gas burner 11, particularly the indicator lamp 31, is provided as the minimum required, the combustion of gas can be confirmed without opening the opening / closing door 20, and safety can be secured. In the rice cooker 1 of the present embodiment, various connection terminals 70 are provided in advance on the control board 60 in order to further enhance safety.

  An example of the embodiment of the safety device will be described with reference to FIGS.

  The opening / closing door 20 is provided on the front side of the opening / closing door 20 for opening / closing, a rotary shaft 22 provided on the side of the opening / closing door 20 for rotating, and a cross-section substantially L protruding from the side of the opening / closing door 20. And a character-shaped support portion 23. Further, the support portion 23 has a protruding portion 24 protruding rearward and a leg portion 25 protruding downward of the opening / closing door 20.

  As one aspect of the safety device 80 of the present embodiment regarding the security of the opening / closing door 20, the safety device 80 is housed inside the housing 2 and has a lever 81 that moves up and down in the vertical direction of the rice cooking device 1 to open / close the opening / closing door 20. By detecting the state, when the opening / closing door is opened during combustion in the gas burner 11, the opening / closing detection sensor 82 that sends a detection signal for closing the electromagnetic valve and stopping the supply of gas to the gas burner 11, and the rice cooker 1 Has a lock rod 83 that moves to the left and right in the horizontal direction, and a signal is sent from the control unit 40 when combustion is performed in the gas burner 11, and an open / close door lock mechanism 84 for locking the open / close door 20 in a closed state. Equipped with. Since these safety devices 80 are individually provided for the respective open / close doors 20, the open / close detection sensor connection terminals 71 and the open / close doors that are electrically connected to the open / close detection sensors 82 are provided for the respective open / close doors 20. The opening / closing door lock mechanism connection terminal 74 electrically connected to the lock mechanism 84 is provided. It should be noted that the opening / closing detection sensor 82 can ensure the safety by its own function, and the opening / closing door lock mechanism 84 can ensure the safety by combining with the function of the opening / closing detection sensor 82. There is.

  The lever 81 is pressed downward (see the arrow A direction in FIG. 6) in the state in which the opening / closing door 20 is closed by the bottom portion 25a of the leg 25 of the support portion 23 of the opening / closing door 20, and the opening / closing detection sensor 82 detects the downward movement. Detects and sends a signal to the control unit 40, and the control unit 40 causes the display unit 30 to display that the opening / closing door 20 is closed. The opening / closing of the opening / closing door 20 is detected by the opening / closing detection sensor 82 when the lever 81 returns upward (see the arrow B direction in FIG. 6).

  When the open / close door 20 is in the closed state, the open / close detection sensor 82 detects the open / close door 20, sends a detection signal to the control unit 40, and in the state in which the control unit 40 determines that the open / close door 20 is in the closed state, combustion in the gas burner 11 is performed. In this case, the lock bar 83 extends in the heating chamber 10 direction (see the arrow D direction in FIG. 6) and extends above the upper surface 24a of the projecting portion 24 of the support portion 23 of the opening / closing door 20 to open the opening / closing door 20. Lock in the closed state to prevent Further, when the operator opens the open / close door 20 when the gas burner 11 burns, the open / close door lock mechanism 84 connected to the open / close door lock mechanism connection terminal 74 operates to lock the open / close door 20. , The door 20 cannot be opened. Further, when the gas burner 11 is not ignited, the lock rod 83 is moved so as to be separated from the heating chamber 10 (see the arrow C direction in FIG. 6) and stored in the open / close door lock mechanism 84 according to a command from the control unit 40. Thus, the opening / closing door 20 can be opened.

  The operator of the rice cooker 1 does not need to open the open / close door 20 to check the combustion state of the gas burner 11. Also, if the open / close door 20 is opened during the combustion of the gas burner 11, the solenoid valve is closed and the gas of the gas burner 11 is closed. It is possible to prevent the opening / closing door 20 from opening when the supply of the gas is stopped or when the gas burner 11 is burning, so that safety can be maintained as necessary and work can be performed with peace of mind. Further, among the connection terminals, if a ventilation fan is electrically connected to the ventilation fan connection terminal 73, when the combustion in the gas burner 11 is started, the ventilation fan is activated to enhance the safety for the worker. You can

  Further, the connection terminal is provided with a gas leak CO alarm device connection terminal 72 for detecting both gas leak and CO generation, and each of the gas leak detection exclusive alarm device and the CO generation detection exclusive alarm device is connected. It is also possible to separately provide connection terminals that can be connected to connect either or both of them. Further, a connection terminal that can be connected to an earthquake detector that detects shaking due to an earthquake may be provided.

  Although the operation of the operator to open the opening / closing door 20 has been described, the operation panel 50 may be provided with a button for unlocking the lock rod 83. Although it has been described above that the safety device 80 includes the opening / closing detection sensor 82 and the opening / closing door lock mechanism 84, the safety device 80 also includes the solenoid valve and the gas leak CO alarm device 8 to ensure the safety of the rice cooking device 1. Other devices are also included.

  The rice cooker 1 of the present embodiment includes a housing 2 that defines a heating chamber 10 in which a rice cooker 3 can be placed, and an opening / closing door 20 that is openably and closably attached to the housing 2 and that opens and closes the front surface of the heating chamber 10. And a gas burner 11 that heats the heating chamber 10, a display unit 30 that displays the combustion state of the gas burner 11, a combustion state of the gas burner 11 is detected, and a display operation of the display unit 30 is controlled according to the detected combustion state. The control unit 40 for controlling the display operation of the display unit 30 and the safety unit 80 for security of the rice cooker 1 are connected to the operation panel 50. A control board 60 having at least one connection terminal 70 connectable thereto.

  As a result, the control unit 40 controls the display unit 30 to display the combustion state of the gas burner 11, and the operator can confirm the operation of the gas burner 11 without opening the opening / closing door, thus ensuring safety. In addition, various safety devices 80 can be expanded through the control board 60, and the ignition stop of the gas burner 11 can be controlled by the control unit 40 in accordance with an output signal from the safety device 80. In addition, it is possible to provide the rice cooker 1 that is more versatile and more versatile with respect to the safety device 80.

  Further, the control board 60 of the rice cooker 1 is provided with the opening / closing detection sensor connection terminal 71 to which the opening / closing detection sensor 82 for detecting the opened / closed state of the opening / closing door 20 is connected, so that the control board 60 is electrically connected to the safety device 80. When the opening / closing door 20 is opened during combustion in the gas burner 11, the electromagnetic valve is closed to stop the combustion in the gas burner 11, so that the safety of the rice cooker 1 can be enhanced.

  Further, the control board 60 of the rice cooker 1 locks the open / close door 20 in the closed state when combustion in the gas burner 11 is started when the open / close detection sensor 82 detects the closed state of the open / close door 20. An opening / closing door lock mechanism connection terminal 74 connected to 84 is provided. As a result, the opening / closing door lock mechanism 84 operates according to a command from the control unit 40 to lock the opening / closing door 20, and it is possible to prevent the opening / closing door 20 from opening when the gas burner 11 burns. It is possible to prevent the operator from accidentally opening the opening / closing door 20 and improve the safety of the operator.

  Further, the rice cooker 1 includes a plurality of opening / closing doors 20, and an opening / closing detection sensor connection terminal 71 and an opening / closing door lock mechanism connection terminal 74 are provided for each opening / closing door 20. Thereby, the control unit 40 can individually monitor each opening / closing door 20, and the safety of the entire rice cooking device 1 can be improved.

  The control board 60 of the rice cooker 1 includes a gas leakage CO alarm device connection terminal 72 connected to the gas leakage CO alarm device 8 for detecting CO and gas leakage generated during incomplete combustion by the gas burner 11. As a result, safety against generation of CO and gas leakage can be improved. Then, various safety devices 80 can be attached, and the rice cooker 1 having high safety and good versatility can be provided.

  It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, etc. can be appropriately made. In addition, the material, shape, size, numerical value, form, number, arrangement location, etc. of each constituent element in the above-described embodiments are arbitrary and are not limited as long as the present invention can be achieved.

  INDUSTRIAL APPLICABILITY The rice cooker according to the present invention enhances safety during combustion of the gas burner and can be applied to fields in which various safety devices can be easily attached.

1 Rice Cooker 2 Housing 3 Rice Cooker 4 Stand 5 Gas Supply Pipe 7 Plug 8 Gas Leakage CO Alarm 10 Heating Room 11 Gas Burner 20 Opening Door 30 Display Section 31 Indicator Light 40 Control Section 50 Operation Panel 60 Control Board 70 Connection Terminal 71 Open / close detection sensor connection terminal 72 Gas leak CO alarm connection terminal 74 Open / close door lock mechanism connection terminal 80 Safety device 82 Open / close detection sensor 84 Open / close door lock mechanism

Claims (5)

A rice cooker for cooking rice,
A housing defining a heating chamber in which the rice cooker can be arranged,
An opening / closing door that is attached to the housing so as to be openable and closable, and that opens and closes the front surface of the heating chamber,
A gas burner for heating the heating chamber,
A display unit for displaying the combustion state by the gas burner,
A control unit that detects the combustion state of the gas burner and controls the display operation of the display unit according to the detected combustion state,
The control unit has at least an operation panel that controls the display operation of the display unit and a plurality of connection terminals that are connected to the operation panel and to which a safety device for safety of the rice cooker can be connected . see containing and a control board connectable safety device program corresponding to the various safety devices have been incorporated in advance,
Rice cooker. The rice cooker according to claim 1,
The said control board is a rice cooker provided with the opening / closing detection sensor connection terminal to which the opening / closing detection sensor which detects the open / closed state of the said opening / closing door is connected. The rice cooker according to claim 2,
The control board is an open / close door connected to an open / close door lock mechanism that locks the open / close door in the closed state when combustion in the gas burner is started when the open / close detection sensor detects the closed state of the open / close door. Rice cooker with connection terminal for lock mechanism.   A rice cooker for cooking rice,
  A casing defining a plurality of heating chambers in which a plurality of rice cookers can be arranged in the vertical direction,
  A plurality of opening and closing doors that are attached to the housing so as to be openable and closable, and that open and close the front surfaces of the plurality of heating chambers
  A plurality of gas burners for heating each of the heating chambers,
  A display unit that displays a combustion state by the plurality of gas burners,
  A control unit that detects a combustion state of the plurality of gas burners and controls a display operation of the display unit according to the detected combustion state,
  The control unit has at least an operation panel that controls the display operation of the display unit, and a plurality of connection terminals that are connected to the operation panel and to which a safety device for safety of the rice cooker can be connected. A control board to which a safety device can be connected, and a program corresponding to various safety devices is pre-installed,
  Rice cooker. The rice cooker according to claim 1 or 4 , wherein
The rice cooker, wherein the control board includes a gas leak CO alarm connection terminal connected to a gas leak CO alarm that detects CO and gas leak generated during incomplete combustion by the gas burner.

Images