JP4296190B2 - Pull-out cooking device - Google Patents

Description

This invention relates to a pull-out pressurized heat cooker such as a microwave oven having a heating space of pull-out has an automatic door.

  Conventionally, a drawer body on which an object to be heated can be placed can be pulled out together with an opening / closing door with respect to the cooker body. A drawer-type heating cooker that can be closed is proposed (Patent Document 1, Patent Document 2). In this type of drawer-type heating cooker, an apparatus main body (cooker main body) having a cooking chamber (heating chamber) that accommodates an object to be heated, an open / close door that shuts off the cooking chamber from the outside air, and interlocked with the open / close door And a heating container (drawer) on which a bottom plate or an object to be cooked can be placed. More specifically, the bottom plate or the heating container is smoothly slid by the slide mechanism, and the rotation output of the motor is transmitted to the sliding mechanism via a transmission means such as a rack and pinion mechanism, so that the bottom plate or the heating container is attached to the device. The main body can be pulled out or moved in the receiving direction. In a state where the bottom plate or the heating container is accommodated in the device main body, the open / close door blocks the cooking chamber from the outside air. The heating cooker described in Patent Document 2 forms a heating chamber for confining microwaves by covering the opening of the heating container having an opening formed in the upper part thereof and capable of being pulled out from the cooker main body with a lid portion. Leakage of radio waves is prevented by providing a choke groove between the opening peripheral edge of the lip and the lid.

  However, in a conventional cooking device having an automatic opening / closing door, when the object to be cooked is a liquid or liquid in a cup, or a soup placed in a shallow soup dish When the object is accommodated in the heating chamber or taken out, if the door is opened and closed at a constant speed, there is a possibility that the cup falls and the soup overflows.

When cooking food, it is necessary to open and close the door before and after heating, but the opening and closing door and the table part on which the object to be heated is placed are an integrated drawer, and the overall inertia is large. This inertia greatly depends on the weight of the cooked food (heated food). Therefore, even when the door is automatically opened and closed, a large force tends to be applied to the opening and closing door when the door is stopped. In such a case, a position error occurs in the position control, and a large acceleration occurs in the heated object accommodated in the drawer, and the food is normally heated such that the food falls or overflows due to the impact. There was nothing.
JP-A-3-45820 (second page, lower left column, line 6 to page 3, upper right column, line 16; FIGS. 1 to 5) Japanese Patent Laid-Open No. 11-237053 (paragraphs [0029] to [0032], FIG. 1)

Therefore, the pull-out pressurized heat cooker, in order to suppress the degree of occurrence of prone impact object to be heated, especially when stopping during door opening and closing, during the movement start and stop of the drawer body, to relax the stop speed And a switch for controlling the power supply to the heating source when the open / close door occupies a fully closed position for closing the opening of the heating chamber, is provided between the drawer body and the cooker body There is a problem to be solved in that speed control for reliably engaging the latch mechanism is possible.

The object of the present invention is to perform fine control when the door is opened and closed, to reduce / eliminate the influence (falling, overflowing, etc.) on food and other cooking items caused by the impact generated when the door is opened and closed, and abnormal noise generated at the time of the impact In addition, when the open / close door occupies the fully closed position for closing the opening of the heating chamber, the latch mechanism provided between the drawer body and the cooker body is securely engaged to supply power to the heating source. to provide a drawer-type pressurized heating cooker capable of reliably operating a switch to control.

To solve the above problems, a pull-out pressurized heat cooker according to the present invention, the cooking device body heating chamber formed therein, a withdrawable-accommodating to the heating chamber and in stowed drawer body having an opening of the chamber and closable door together, drive means for driving the front Symbol drawer body in the closing direction the drawer, and having a speed control means for controlling the speed of the drawer body by said driving means In the cooker, the open / close door occupies a fully closed position that closes the opening of the heating chamber, and a latch head provided in the drawer engages with a latch hook attached to the cooker body. A switch for controlling power supply to the heating source, and with respect to the drawer body, the fully closed position of the open / close door and a stop on the near side of the fully closed position And front position, the is set and the latch rides position in which the latch head at a position closer to the fully closed position side starts engaging said latch hook of the stop position before the speed control means, said with drawer body to decelerate the speed before Symbol drawer body in response to reaching the stop position before, it accelerates the closing speed of the drawer body in response to the drawer body reaches the latch rides position It is characterized in that.

According to the pull-out pressurized heat cooker, the drawer body reaches the stop forward position provided in front of the stop position of the opening and closing doors, in response to the fact, the speed control means controls the driving means To slow down the moving speed of the drawer. Therefore, it is possible to control the pos- sibly velocity to stop with the door closed Ji action cooking at the start. For example, since the speed starts to decrease from the pre-stop position of the drawer body to the stop position, the drawer body does not stop suddenly at the stop position, and the degree of impact at the time of the stop is suppressed, and food, etc. The influence on the food can be reduced or eliminated. Moreover, in order to engage the latch head provided in the drawer body with the latch hook attached to the cooker body, momentum is required on the drawer body side. When the drawer reaches the latch ride position, the closing speed of the drawer is accelerated in response to this, so the drawer has momentum in the closing direction when the latch rides. And the latch is securely engaged and a switch for controlling the power supply to the heating source can be activated.

In this pull-out pressurized heat cooker, said the stop position and the fully open position of the door, said stop position before it is possible to specific position detection means is disposed fully open detection switch capable of detecting. The stop position may be a fully closed position of the open / close door, and an intermediate switch that can be detected by the specific position detecting means may be disposed at the position before the stop. In the use mode of a normal heating cooker, the open / close door is most likely to have the fully open position or the fully closed position as the stop position, so the speed control of the drawer (open / close door) is controlled with respect to the fully open position or the fully closed position. It is realistic to do.

In this pull-out pressurized heat cooker, the the drive means and counting means are provided for outputting a count corresponding to the movement amount of the drawer body, it measures the displacement of the drawer body by said counting means it can. For example, when the driving means is a motor, its rotational output is usually converted into the amount of movement of the drawer by a rack and pinion mechanism. In this case, the output rotation amount of the motor corresponds to the movement amount of the drawer. When the output rotation amount is counted by a counting means such as a rotary encoder, the counting means can function as a position detection means, and the detected count amount becomes a value for indirectly detecting the position of the drawer. Such indirect detection of the position of the drawer body allows fine speed control in a relatively short section between the position before the stop and the complete stop, for example.

In this pull-out pressurized heat cooker, said speed control means is preferably set to be arbitrarily changed closing speed of the door. By making it possible to arbitrarily change the opening / closing speed of the opening / closing door, it is possible to set the opening / closing speed according to the user's preference. Furthermore, it is preferable to notify the user of the abnormality detection by a notification means such as sound and display when the opening / closing door is opened and closed, especially when an abnormality is detected when the door is stopped. It is possible to notify the user of the abnormality detection by a notification means such as sound and display.

Pull-out pressurized heat cooker according to the present invention, which is configured as described above, upon stopping of the drawer body, the speed control is performed from the stop position before in front of the fully closed position. As a result, even if the weight of the drawer body changes greatly, by performing fine control before stopping, the impact on food caused by the stop (falling, dripping, etc.) due to the stop when opening and closing the door and at the time of impact Abnormal noise generated can be suppressed. Also, since the drawer closing speed is accelerated in response to the drawer reaching the latch riding position, the latch head provided on the drawer over the latch is attached to the cooker body when closing the door. Since the latch hook is reliably engaged with the latch hook, the operation of the switch for controlling the power supply to the heating source is ensured. Further, when an abnormality occurs in the speed of the drawer, it can be notified by display and sound. Furthermore, since the moving speed of the open / close door from the position before the stop to the stop position can be automatically controlled and the speed at that time can be set to an arbitrary speed, it can be configured to meet the user's needs.

Hereinafter, with reference to the accompanying drawings, pull-out pressurized heat cooker according to the present invention (hereinafter, abbreviated as "cooker") describing the embodiments. FIG. 1 is a perspective view (door open state) showing an outline of a heating cooker according to the present invention, and FIGS. 2 to 4 are side cross-sectional views showing the heating cooker shown in FIG. 1 when the door is fully opened. FIG. 4 is a side sectional view showing a state where the door is in a deceleration position, and a side sectional view showing a state where the door is in a fully closed state.

  As shown in FIG. 1, the cooking device includes a cooking device main body 1, and a drawer body 2 on which an object to be cooked can be placed together with its storage container and can be pulled out and stored from the cooking device main body 1. It has. A heating chamber 12 in which the drawer body 2 can advance and retreat is formed inside the cooker body 1. The inside of the heating chamber 12 is surrounded by the left, right, top, bottom, and back walls, but the front surface is formed in the opening 12 a for taking in and out the drawer body 2.

  The drawer body 2 can be pulled out from the inside of the heating chamber 12 of the cooker body 1 to the outside in the direction indicated by the arrow, or vice versa, with respect to the cooker body 1 by a plurality of slide mechanisms 4 described later. It is arranged to be movable. The drawer body 2 includes an opening / closing door (hereinafter abbreviated as “door”) 2a for opening and closing the heating chamber, and a table 2b on which the door 2a is attached and on which an object to be heated is placed. The upper space is formed in the heating container 3 for accommodating the object to be heated and the container. The heating container 3 has a front plate attached to the door 2a, left and right side plates extending rearward from the left and right of the front plate, and a rear plate connected to the side plate on the back (back) side thereof. The plate is attached to the table 2b. In addition, a container opening 3a through which an object to be heated can be taken in and out is formed in the upper part of the heating container 3. Although not shown in the figure, the microwave generator including a magnetron that generates microwaves and a waveguide that propagates the microwaves generated by the magnetron is disposed in the cooker body 1. It is installed. Microwaves generated by the magnetron propagate through the waveguide and are supplied into the heating chamber 12 from the power supply port.

The heating cooker includes slide mechanisms 4 and 4 disposed on the left and right outer sides of the heating container 3 in order to move the drawer body 2 within the cooking appliance body 1. A similar slide mechanism is also arranged on the bottom side of the heating container 3. In relation to the slide mechanism on the bottom side of the heating container 3, a drive mechanism such as a motor for moving the drawer body 2 in and out of the heating chamber 12 and a rack and pinion that converts the rotational output of the drive mechanism into a linear motion Although a motion conversion mechanism such as a mechanism is also provided, these mechanisms are not shown. The drawer body 2 is movable between a fully opened position where the heating container 3 is completely pulled out from the heating chamber 12 and a fully closed position where the heating container 3 is completely stored in the heating chamber. When the drawer body 2 occupies the fully closed position, the door 2 a closes the opening 12 a of the heating chamber 12, so that the heating chamber 12 is sealed by the inner wall surface of the cooker body 1 and the drawer body 2.

  As shown in FIGS. 2 to 4, each slide mechanism 4 is formed of a nested slide rail that allows the movable rail 4 b to slide with respect to the fixed rail 4 a. Each slide mechanism 4 is provided in a passage box formed in the cooker main body 1 on each of the left and right sides and the bottom side of the heating chamber 12, and the fixed rail 4a is attached to the outside of the heating chamber 12 in the passage box. The movable rail 4b can move in and out of the passage box together with the drawer body 2. The drawer body 2 is supported by the cooker body 1 via each slide mechanism 4 and can be stably pulled out from the heating chamber 12.

  One slide mechanism 4 is provided with a mechanism for operating the full-close detection switch 8 or the full-open detection switch 10 when the drawer body 2 is moved to the full-close position and the full-open position, respectively. For the fully closed detection, when the drawer body 2 is pushed from the open state to the fully closed position, the operating lever (latch head) 9 provided at the innermost position of the movable rail 4b is engaged with the latch hook 11. Then, the fully closed detection switch 8 is turned on. A front position detection switch (intermediate switch) 5 is provided at a position slightly in front of the fully closed position (intermediate position). The position of the front position detection switch 5 is set to a position at which the user's finger or hand is easily pinched in the door closing operation. The fully open detection switch 10 and the intermediate detection switch 5 are attached to the cooker main body 1 via a switch attachment angle 6.

An actuator 7 that can be operated when the fully open detection switch 10 and the intermediate switch 5 reach their respective positions is attached to the innermost part of the movable rail 4b. The actuator 7 turns off the switch when it is out of each position. Therefore, in the drawer 2, the actuator 7 operates the fully open detection switch 10 in the fully open position (FIG. 1), and the actuator 7 operates the intermediate switch 5 in the middle of closing from the fully open position (FIG. 2). and in the fully closed position to actuate the switch 8 out full-closing by actuation lever 9 is engaged with the latch hook 11 (FIG. 3). As described above, the position of the drawer body 2 (that is, the door 2a) is known by the operation of the detection switches 10, 5, and 8 arranged in accordance with the fully open, intermediate, and fully closed positions of the drawer body 2. Can do. In the passage box, in addition to the positions where the fully open, intermediate and fully closed detection switches 10, 5, and 8 are arranged, a plurality of detection switches can be arranged to detect a more detailed drawing position of the drawer body 2. You can also

  When the drawer body 2 is pulled out, the operating lever 9 is detached from the latch hook 11, and the full-close detection switch 8 is turned off. Therefore, even after cooking, even during cooking, when the drawer body 2 is opened, the power supply to the microwave generator is turned off, and generation of microwaves is disabled. The fully closed detection switch 8 can be used as a part of a switch for controlling the oscillation and stoppage of the microwave. The user can set how the cooking device is actually heated by operating other operation switches. In addition, the cooking device main body 1 (or the door 2a) can be provided with a main switch for starting cooking and an operation switch for operating the cooking device including an opening / closing operation of the door 2a.

Thus, the heating cooker uses the table 2a on which the object to be heated can be placed as a drawer 2 that can be pulled out of the cooker body 1 together with the door 2a , and the drawer 2 is a heating chamber in the cooker body 1. In the accommodated state accommodated in 12, it is comprised as a drawer-type heating cooker which can close the opening part 12a of the heating chamber 12 with the door 2a.

  FIG. 5 shows a chart showing a detailed example of opening / closing control including the speed of the opening / closing door 2a. It is assumed that the opening / closing door 2a is in the fully closed position Pc at the beginning of opening / closing control of the opening / closing door. The operation of the open / close door is started in the direction of door opening by a drive mechanism such as a motor by full power input. Therefore, the drawer body 2 starts to move in the door opening direction with the maximum acceleration. The latch riding position Pr is set at a position slightly opened (ten and several millimeters) from the fully closed position Pc, and the opening speed of the drawer body 2 is reduced immediately after passing the latch riding position Pr. Thereafter, the drawer body 2 continues the opening operation at the decelerated constant opening speed. A pulse for reading the rotational speed is constantly generated from a pulse generator attached to the motor.

  When the actuator 7 reaches the arrangement position Pso of the full-opening detection switch 10 and turns it on, the moving speed of the drawer body 2 is slightly decelerated immediately after the on-operation of the full-opening detection switch 10 is input to the control device. . The degree of deceleration is such that the drawer 2 is completely stopped when the number of pulses generated by the pulse generator after the ON operation of the fully open detection switch 10 is input to the control device reaches a predetermined value. Is set. The drawer body 2 occupies the fully open position at the position Po.

Next, door closing control when the open / close door 2a is operated from the fully open position Po in the door closing direction will be described. The operation in the door closing direction is performed at a constant closing speed after the initial acceleration period has elapsed. When the actuator 7 reaches the near stop position Psi where the intermediate switch 5 is disposed and turns on the intermediate switch 5, the on operation is input to the control device, and the control device outputs a control signal for starting the low speed operation. Output. The control device predicts the actual position of the drawer body 2 from moment to moment, and from the position Pre advanced from the position of the intermediate switch 5 in a predetermined closing direction, the actual position of the drawer body 2 at the closing speed set at a deceleration is set. Start low-speed operation.

When the drawer body 2 continues the closing operation at the decelerating speed and the actuator 7 reaches the latch riding position Pr, this is input to the control device, and the control device accelerates the closing speed of the drawer body 2 and latch latch hook 11 (see FIG. 2) sets the speed of to be able to overcome the latch with a relatively momentum. When the latch hook 11 is completely engaged with the latch head 9, the open / close door 2a occupies the fully closed position. When the latch hook 11 is engaged with the latch head 9, the full-close detection switch 8 is activated and the power supply to the microwave generator is turned on.

  When an abnormality is detected when the opening / closing door is opened / closed, the user is notified of the abnormality detection by a notification means such as sound and display.

  In this way, the switch for instructing deceleration is detected just before the opening / closing door 2a opens and closes, the speed of the opening / closing door 2a is reduced, and further, it gradually decelerates to just before the full opening / closing position, and then gently stops after detecting the full opening / closing position Let

The perspective view of a drawer type cooking-by-heating machine. Side view of the drawer-type cooking device (with the door fully open). The side view of a drawer type cooking-by-heating machine (state where the door has come to the deceleration position). Side view of a drawer-type cooking device (with the door fully closed). Chart showing detailed example of open / close control including speed of open / close door in drawer-type cooking device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cooker body 2 Drawer body 2a Open / close door 2b Table 3 Heating container 3a Container opening 4 Slide mechanism 4a Fixed rail 4b Movable rail 5 Intermediate detection switch (front position detection switch)
6 Switch mounting angle 7 Actuator 8 Fully closed detection switch 9 Movable lever (latch head) 10 Fully open detection switch 11 Latch hook 12 Heating chamber 12a Opening

Claims (4)

Cooker body heating chamber formed therein, the drawer body having a closable door integrally the opening of the a withdrawable-accommodating the heating chamber and the heating chamber accommodating state, before Symbol In a drawer-type heating cooker provided with drive means for driving the drawer body in the opening and closing direction , and speed control means for controlling the speed of the drawer body by the drive means ,
The open / close door occupies a fully closed position that closes the opening of the heating chamber, and a latch head provided in the drawer body engages with a latch hook attached to the cooker main body to supply power to the heating source. Operating the switch to control the supply,
For the drawer body, the fully closed position of the open / close door, a stop front position on the near side of the fully closed position, and a position near the fully closed position side of the stop front position, and the latch head is The latch ride-on position that starts engagement with the latch hook is set,
Said speed control means, said in response to the drawer body with slowing the rate of the previous SL drawer body in response to reaching the stop position before the drawer body reaches the latch rides position A cooking device having a drawer-type automatic opening / closing door characterized by accelerating the closing speed of the drawer body . A specific position detecting means for detecting that the drawer body passes the position before the stop is provided;
The driving means is provided with a counting means for outputting a count corresponding to the movement amount in order to measure the movement amount of the drawer body,
Reaching the latch rides position of the drawer body, according to claim 1, characterized in that is determined based on the amount of movement of the drawer body as measured by said counting means after passing the stop position before A heating cooker having a drawer type automatic opening and closing door as described in 1. The cooking device having a drawer type automatic opening / closing door according to claim 1 or 2 , wherein the speed control means can arbitrarily change the opening / closing speed of the opening / closing door. 4. The user according to claim 1, wherein an abnormality is detected by an informing means such as a sound or a display in response to an abnormality being detected when the opening / closing door is opened or closed. 5. A cooking device with a drawer-type automatic door.