JP2008036011A - Cooker - Google Patents

Abstract

Even if a door of a heating chamber is open, if it is a gap that does not affect cooking, it can be detected as a door closed state and the door closed state can be maintained to some extent.
A cooking device body 4 having a heating chamber 3 in which heaters 2a and 2b are installed, and a door 5 capable of closing the front surface of the heating chamber 3 of the cooking device body 4 are provided. The cooker body 4 is provided with a door sensor 12 for detecting that the gap g between the door 4 and the front surface of the heating chamber 3 is equal to or less than a predetermined distance from the magnetic force of the magnet 11, and outputting a door closing signal. When the sensor 12 detects the gap g, the front edge of the heating chamber 3 is positioned within the effective range of the magnetic force of the magnet 11 so that a magnetic path can be formed.
[Selection] Figure 1

Description

  The present invention relates to a cooking device that is incorporated under a top plate of an electromagnetic induction heating cooking device, for example, and heats an object to be heated such as fish or meat with a heater.

  A cooker body having a heating chamber in which a heater is installed, and a door capable of closing the front surface of the heating chamber of the cooker body, and are incorporated under the top plate of the electromagnetic induction heating cooker, such as fish and meat 2. Description of the Related Art A heating cooker that cooks an object to be heated is known. In such a case, detection of opening / closing of a door is conventionally performed by a micro switch.

  The door sensor consisting of this micro switch is installed in the vicinity of the place where the door and the front edge of the heating chamber abut. When the door is open, the button on the movable contact side of the micro switch is released from the door and protrudes. It is in the OFF state. When the door is closed, the button on the movable contact side of the microswitch is pressed by the door and is in the ON state.

  When the user operates a key such as cooking start to cook, the micro-switch is in the OFF state if the door is open, so the cooking device does not turn on and cooking begins. Not. Also, if the door is closed at that time, the micro switch is in the ON state, so that the microcomputer recognizes the state of the switch and enables the user's key operation so that cooking by heating is started normally. (For example, refer to Patent Document 1).

Japanese Utility Model Publication No. 5-26026 (FIG. 2)

  By the way, in the above-mentioned micro switch that detects the opening and closing of the door, the button on the movable contact side is normally urged to the release side, and the door itself resists the urging force when the door is closed. The button is turned on by physically pressing the button. Therefore, when the door is open even slightly, the microswitch is turned off by the biasing force, and even if the user operates a key such as cooking start, the power is not turned on and cooking is not started.

  In this way, conventionally, since the door closed state (switch ON state) is detected by physically pressing the button on the movable contact side of the micro switch, when the micro switch is turned ON, There is no problem as long as the button on the movable contact side of the switch can be pressed securely.However, if the door is closed, the variation of each part, or the mounting position of the micro switch is misaligned, the door and the front of the heating chamber Even if a slight gap (gap that does not affect cooking) occurs in the meantime, as the micro switch, the push amount of the button on the movable contact side becomes insufficient and may remain in the OFF state. And if it became like this, even if the door seemed to be closed at first glance, there was a difficulty that all the key operations of the user became invalid in terms of operation because the door was opened.

  The technical problem of the present invention is that even if the door of the heating chamber is open, if it is a gap that does not affect cooking, it can be detected as a door closed state and the door closed state can be maintained to some extent. It is in.

  The cooking device according to the present invention has the following configuration. That is, in a cooking device having a cooking chamber body having a heating chamber in which a heater is installed and a door capable of closing the front surface of the heating chamber of the cooking chamber body, the door is provided with a magnet, A door sensor is provided that detects that the gap between the door and the front surface of the heating chamber is equal to or less than a predetermined distance from the magnetic force of the magnet and outputs a door closing signal.

  According to the heating cooker of the present invention, even if the door of the heating chamber is somewhat open, if the gap between the door and the front surface of the heating chamber is not more than a predetermined interval, in other words, if it is not more than a gap that does not affect cooking, From this state, the door can be detected as a closed state without contact. For this reason, although the conventional cooking is possible, the problem that all the key operations of the user are invalid does not occur, and the usability is improved.

The present invention will be described below with reference to illustrated embodiments.
FIG. 1 is a perspective view showing a door open state of a cooking device according to an embodiment of the present invention incorporated in an electromagnetic induction heating cooker, FIG. 2 is a perspective view showing the door closed state, and FIG. FIG. 4 is a side view showing the door closed state, FIG. 5 is a schematic view showing the positional relationship between the main part of the magnet, the door sensor comprising the magnetic sensor, and the metal plate forming the magnetic path. FIG. 6 is a plan view schematically showing the positional relationship between the magnet, the door sensor, and the metal plate when the door is closed, and FIG. 7 is a level that does not affect cooking between the door and the front of the heating chamber. It is a top view which shows roughly the relationship between a magnet, a door sensor, a metal plate, and a magnetic field in the state where this clearance gap is open.

  The heating cooker of this Embodiment is integrated below the top plate 1 of an electromagnetic induction heating cooker, as shown in FIGS. That is, the cooking device includes a cooking device main body 4 having a heating chamber 3 in which an upper heater 2a and a lower heater 2b for cooking an object to be heated such as fish and meat, and a heating chamber 3 of the cooking device main body 4. And a door 5 capable of closing the front surface.

  The top plate 1 on the electromagnetic induction heating cooker side is provided with an upper panel 7 provided with a switch 6 for performing various operations such as electromagnetic induction heating on the front edge portion of the upper surface thereof, and the cooker A main panel 9 provided with a main power switch 8 and the like for enabling energization to the upper and lower heaters 2a and 2b of the cooking device is installed on the right side of the front surface on the main body 4 side.

  In addition, a magnet 11 is provided on the side surface of the door 5 to maintain the door closed state by a magnetic force when the door is closed. And a door sensor 12 comprising a magnetic sensor such as a reed switch or a Hall IC that detects that the gap g (FIG. 7) between the heating chamber 3 and the front surface of the heating chamber 3 is equal to or less than a predetermined distance and outputs a door closing signal. . From the viewpoint of ensuring safety, the door sensor 12 does not affect the cooking and does not affect cooking, that is, in the case of forced evacuation. It sometimes has a function of detecting the door and outputting a door closing signal.

  Here, the front edge of the heating chamber 3 is covered with a synthetic resin (such as a cover thereof), and a metal plate 13 that forms a magnetic path at a position facing the magnet 11 of the front edge made of this synthetic resin. Is embedded to be flush with each other. That is, when the gap g between the door 5 and the front surface of the heating chamber 3 is 10 mm or less, the door sensor 12 and the metal are within the effective range of the magnetic force of the magnet 11 (shown by a wavy line in the figure) as shown in FIG. The plate 13 is positioned so that the door closed state (a state where the gap g is 10 mm or less) can be detected, and the closed state of the door 5 can be held to some extent by a magnetic force. The metal plate 13 can be made unnecessary if the front edge of the heating chamber 3 is not covered with the synthetic resin and the magnetic metal is peeled off.

  In the cooking device of the present embodiment having the above configuration, when the door 5 is open as shown in FIGS. 1 and 3 and the distance between the door 5 and the front of the heating chamber is more than a predetermined distance, the magnet 11 Since the door sensor 12 is separated and the door sensor 12 is outside the effective range of the magnetic force of the magnet 11, the sensor circuit is in an OFF state. For this reason, the cooking device is not turned on, all the key operations by the user are invalidated, and the cooking is not started.

  2 and 4, when the door 5 is closed and the distance between the door 5 and the front surface of the heating chamber is equal to or less than a predetermined distance (the gap g is 10 mm or less), the magnet 11 and the door sensor 12 5 and 6 are close to each other or the door sensor 12 and the metal plate 13 are located within the effective range of the magnetic force of the magnet 11 as shown in FIG. Can be detected, and the closed state of the door 5 can be held to some extent by magnetic force. Therefore, when the user operates a key such as cooking start for cooking, the sensor circuit is in the ON state. Therefore, the microcomputer recognizes that state and enables the user to operate the key normally. Cooking is started.

  Thus, in the heating cooker of the present embodiment, even if the door 5 of the heating chamber 3 is somewhat open, the gap g between the door 5 and the front surface of the heating chamber 3 is less than a predetermined interval, that is, a finger does not enter, If it is 10 mm or less that does not affect cooking, it can be detected from this state as a door closed state without contact. For this reason, although the conventional cooking is possible, the problem that all the key operations of the user are invalid does not occur, and the usability is improved.

  Further, by using a magnetic sensor such as a reed switch or a Hall IC as the door sensor 12, a magnetic sensor circuit that detects the door closed state without contact can be easily formed.

  Further, when the door sensor 12 detects the gap g, that is, when the gap g becomes 10 mm or less, the leading edge of the heating chamber is located within the effective range of the magnetic force of the magnet 11 to form a magnetic path. Thus, the closed state of the door 5 can be maintained to some extent by magnetic force from the stage where the gap g is 10 mm.

  Further, even if the front edge of the heating chamber 3 is made of synthetic resin (non-magnetic material), a metal plate that forms a magnetic path at a position facing the magnet 11 on the door 5 side as in the present embodiment. By providing 13, an attractive force due to magnetic force can be generated, and the closed state of the door 5 can be maintained by magnetic force. Therefore, selection of the material of the front edge part of the heating chamber 3 becomes easy and design freedom is expanded.

  In the above-described embodiment, the present invention has been described by taking as an example the one used in a heating cooker incorporated in an electromagnetic induction heating cooker. Needless to say, the present invention can also be applied to a cooking device such as a roaster or a grill.

It is a perspective view which shows the door open state of the heating cooker which concerns on one embodiment of this invention. It is a perspective view which shows the door closed state of the heating cooker which concerns on one embodiment of this invention. It is a side view which shows the door open state of the heating cooker which concerns on one embodiment of this invention. It is a side view which shows the door closed state of the heating cooker which concerns on one embodiment of this invention. It is a perspective view which shows roughly the positional relationship of the metal plate which forms the magnet which is the principal part of the heating cooker which concerns on one embodiment of this invention, a door sensor, and a magnetic path. It is a top view which shows roughly the positional relationship of the magnet in the door closed state of the heating cooker which concerns on one embodiment of this invention, a door sensor, and a metal plate. The relationship between a magnet, a door sensor, a metal plate, and a magnetic field in the state where the clearance gap which does not affect cooking is opened between the door of the heating cooker which concerns on one embodiment of this invention, and a heating chamber front is schematic. FIG.

Explanation of symbols

1 top plate, 2a upper heater, 2b lower heater, 3 heating chamber, 4 cooker body, 5 door, 6 switch, 7 upper panel, 8 main power switch, 9 main panel, 11 magnet, 12 door sensor, 13 metal plate , G Clearance.

Claims (5)

In a cooking device comprising a cooking device body having a heating chamber in which a heater is installed, and a door capable of closing the front surface of the heating chamber of the cooking device body,
The door is provided with a magnet, and the cooker body is provided with a door sensor that detects a gap between the door and the front surface of the heating chamber from a magnetic force of the magnet, and outputs a door closing signal. A cooking device characterized by that.   The cooking device according to claim 1, wherein the door sensor outputs a door closing signal by detecting that a gap between the door and the front surface of the heating chamber is 10 mm or less.   The said door sensor is comprised so that the front edge part of the said heating chamber may be located in the effective range of the magnetic force of the said magnet, and a magnetic path can be formed when the said door sensor detects the said clearance gap. The cooking device according to claim 1 or 2.   The cooking device according to claim 3, wherein a front edge portion of the heating chamber is made of a synthetic resin, and a metal plate that forms the magnetic path is provided at a position facing the magnet on the door side. . The cooking device according to any one of claims 1 to 4, wherein the door sensor includes a reed switch or a Hall IC.

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