JP2012042084A - High-frequency heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-frequency heating cooker, in which reduction in the size of a display part or an operation key is not necessary though the height of the body is limited to at most about 250 mm, deformation of a door can be prevented and the door can be stably opened and closed while maintaining sealing characteristics for radio waves.SOLUTION: The inside of the heating cooker is segmented into a heating chamber 11 and an electric chamber 13. The heating chamber includes a body 1 having a front opening 2 where food is taken in and out, and a door 4 that opens in a vertical direction, disposed as freely opened and closed to cover the front opening of the heating chamber and the electric chamber. The door includes an operation part 14 integrally disposed in a part corresponding to the electric chamber. A high frequency generating means 21, a drive power supply means 36 supplying a power source to the high frequency generating means, and a waveguide 19 guiding the generated high-frequency waves to the heating chamber and supplying the waves into the chamber are disposed in the electric chamber. A pair of arms 5 regulating an opening angle of the door is disposed between right lateral ends of the door and parts of the body near right and left outer casing plates. An oscillation stopping device 15 that links the opening and closing operation of the door to stop the high frequency generating means is disposed between the heating chamber and the electric chamber.

Description

  The present invention relates to a high-frequency cooking device, and more particularly to a high-frequency cooking device having a vertically open door.

  Conventionally, this type of high-frequency heating cooker, for example, a so-called high-frequency heating cooker with an electric heating device, which heats a heating chamber with an electric heating device and burns the object to be heated, is generally a vertically open door on the front surface of the heating chamber of the main body. And an arm that holds the door, an oscillation stop device that interlocks with the opening and closing of the door, and an operation that is placed right next to the heating chamber of the main unit when viewed from the front (right side of the door) A panel and an electric heating device for scoring an object to be heated (for example, refer to Patent Documents 1 to 3).

Japanese Patent No. 4265663 (FIG. 1) Japanese Patent No. 4372099 (FIG. 1) Japanese Patent No. 3653968 (FIGS. 1 and 2)

  However, in the case where the operation panel is arranged on the right side of the heating chamber in the main body, the door and the door opening angle between the door and the main body are set in the area on the left side of the operation panel on the heating chamber side. An arm for regulating and an oscillation stop device must be arranged. The height of the parts constituting the oscillation stop device is generally about 160 mm (see FIG. 7). This is approximately the same or larger than the vertical dimension of the front opening of the heating chamber. For this reason, when trying to set the main body height to be lower than 250 mm, the arm and the oscillation stop device cannot be arranged one above the other, and only one arm can be arranged on the left side of the heating chamber. In other words, when the arms are arranged on the left and right sides of the heating chamber, the arms and the oscillation stop device are arranged so as to overlap each other, and the height of the main body has to be increased to 250 mm or more.

  Further, when the arms are simply arranged next to the oscillation stopping device, the arms occupy the space on the electric chamber side of the main body. And in order to make a high frequency heating cooker compact in such a thing, the operation panel arrange | positioned on the right side of the heating chamber in a main body must be made small, and in connection with it, the display apparatus arrange | positioned there, Buttons will also have to be small. For this reason, the operation becomes difficult and the usability deteriorates.

  Such a problem can be solved by increasing the size of the high-frequency cooking device, but there is a reason why the operation panel or the like cannot simply be enlarged. Regarding the width dimension of the high-frequency heating cooker with an electric heating device that has an independent operation panel on the right side of the heating chamber, the breakdown in Japan is about 300 mm in width, and the periodic structure for preventing radio wave leakage from the door In the case of a high-frequency cooking device using a high frequency of 2450 MHz, the body generally requires about 30 to 35 mm around the front opening periphery of the heating chamber, 10 mm for the door support structure, and 20 mm for the oscillation stop device. 90mm is added by the high frequency generation means (magnetron), and the total is about 500mm. It is desirable that the high-frequency heating cooker with a penetration rate exceeding 97% and the replacement demand occupying most is suitable for a space with a width of about 500 mm, simply expanding the space on the electric room side, expanding the operation panel, Increasing the width of the body does not match the needs of the user.

  In addition, in the case where the arm is arranged only on the left side of the heating chamber and the arm tip hook is hooked on the left side shaft of the door, etc., when holding the door open, One left arm on one side must support and support the door opening angle. For this reason, when a load is applied, such as when an object to be heated is placed on an open door, there is a possibility that deformation on the right side without the door arm may occur due to the cantilever structure. Therefore, there has been a problem that radio wave leakage and the like are likely to occur.

  In addition, when there is no arm on the right side of the door, the spring that is attached to the arm and applies a biasing force in the closing direction to the door is only on the left side. For this reason, the problem arises that the door is opened during heating, the oscillation stopping device is operated, and the switch is turned off.

  The technical problem of the present invention is that there is no need to reduce the size of the display unit and operation keys while keeping the height of the main body to about half or less of the main body width, and the door is opened and an object to be heated is placed thereon. Even when a load is applied to the door, it can prevent deformation of the door, maintain stable door opening and closing and radio wave sealing characteristics, can improve unstable operation such as switching off, safe, easy to see, easy to operate, The purpose is to improve usability.

  The high-frequency cooking device according to the present invention includes a main body having an interior defined in a heating chamber and an electric chamber, a front opening for taking in and out food in the heating chamber, a front opening in the heating chamber, and an electric chamber. A vertically open door provided so as to be openable and closable so as to cover the door, and an operating portion is integrally arranged in a portion corresponding to the electric chamber in the door. A drive power supply means for supplying power to the high frequency generation means and a waveguide for guiding the generated high frequency to the heating chamber and supplying it to the heating chamber are arranged between the left and right ends of the door and the vicinity of the exterior plates on the left and right sides of the main body. Is provided with a pair of arms for regulating the opening angle of the door, and an oscillation stopping device for stopping the high-frequency generating means in conjunction with the opening / closing operation of the door is arranged between the heating chamber and the electric chamber.

According to the high-frequency heating cooker of the present invention, the operation unit is integrally disposed in a portion corresponding to the electrical chamber of the door, and the opening angle of the door is regulated between the left and right of the door and the vicinity of the exterior plate on the left and right of the main body. Since there is a pair of arms to be operated and an oscillation stop device that stops the high-frequency generating means in conjunction with the opening and closing operation of the door between the heating chamber and the electrical chamber, a compact main body (main body height of about 250 mm) The operation button and the display unit are not small, and an easy-to-use operation unit that is easy to see and operate can be realized.
In addition, since the door is supported by the arms arranged at the left and right ends of the door, even when the door is opened and an object to be heated is placed on it, the door can be prevented from deforming and stable. Therefore, it is possible to maintain the opening and closing of the door and the radio wave sealing characteristics, to improve the unstable operation such as switching off, and to obtain a safe and easy-to-use cooking device.

It is a perspective view which shows the external appearance of the high frequency heating cooker which concerns on embodiment of this invention. It is a perspective view which shows the door open state of the high frequency heating cooker which concerns on embodiment of this invention. It is an internal structure figure which shows the state which removed the exterior plate of the high frequency heating cooker which concerns on embodiment of this invention. It is an internal structure figure which shows the state which removed the exterior board and door front board of the high frequency heating cooker which concerns on embodiment of this invention. It is explanatory drawing of the internal structure which shows the structure and attachment state of the door of the high frequency heating cooker which concerns on embodiment of this invention. It is sectional drawing of the side view which shows the high frequency heating cooker which concerns on embodiment of this invention. It is a perspective view which shows the oscillation stop apparatus of the high frequency heating cooker which concerns on embodiment of this invention.

The present invention will be described below with reference to illustrated embodiments.
FIG. 1 is a perspective view showing an appearance of a high-frequency heating cooker according to an embodiment of the present invention. FIG. 2 is a perspective view showing the open state of the high-frequency cooking device according to the present embodiment. FIG. 3 is an internal structure diagram showing a state where the outer plate of the high-frequency heating cooker according to the present embodiment is removed. FIG. 4 is an internal structure diagram showing a state in which an exterior plate and a door front plate of the high-frequency heating cooker according to the present embodiment are removed. FIG. 5 is an explanatory diagram of the internal structure showing the structure and attachment state of the door of the high-frequency cooking device according to the present embodiment. FIG. 6 is a side sectional view showing the high-frequency cooking device according to the present embodiment. FIG. 7 is a perspective view showing an oscillation stopping device for a high-frequency cooking device according to the present embodiment.

  In the high-frequency heating cooker according to the present embodiment, the main body 1 is formed in a rectangular parallelepiped shape, for example, and a top table 39 on which an object can be placed is disposed on the exterior plate 10 of the main body 1 as shown in FIGS. Has been. In addition, a heating chamber 11 covered with an exterior plate 10 is provided inside the main body 1. The heating chamber 11 has an opening (hereinafter referred to as “front opening”) 2 formed on the front surface, and the front opening 2 is opened and closed by a door 4 having a window 3. The front side of the door 4 is covered with a door front plate 4b, the rear side is covered with a dielectric door rear plate 4c except for the window 3 and its peripheral portion, and a handle 22 is provided at the center of the upper side. Yes.

  More specifically, the heating chamber 11 is formed in a box shape having a front opening by a bottom plate 12a, a side plate 12b, a rear plate 12c, a top plate 12d, and a front plate 12e which are face members 12. As the face material 12 formed in a box shape, for example, a steel plate having a self-cleaning layer having a self-cleaning function, a steel plate having a surface coated with a fluorine coating excellent in antifouling property, and the like are suitable.

  As shown in FIG. 6, the top plate 12d is provided with an upper constricted portion 121d for preventing heat deformation and uniform heating so as to be recessed upward, and the upper heating unit 16 is disposed in the upper constricted portion 121d. Yes. As the upper heating unit 16, for example, a flat heater (a heater wire wound around mica or the like and further insulated by mica insulation) disposed in close contact with the surface of the top plate 12d on the outside 11 side of the heating chamber is employed. Is possible.

  Further, as shown in FIG. 6, a lower diaphragm 121a is provided in the bottom plate 12a so as to be recessed downward. In the lower diaphragm 121a, the lower heating unit 17 and an antenna for microwave radiation during high-frequency heating cooking are provided. 18 is arranged. The lower diaphragm 121a is made of a material that transmits microwaves, such as a dielectric (ceramic). As the lower heating unit 17, for example, a sheathed heater (a metal pipe sealed with an insulating powder through a heater wire) can be used.

  The heating chamber 11 and the lower heating unit 17 are partitioned such that a mounting plate 29 made of a dielectric covers the lower diaphragm 121a. The mounting plate 29 made of a dielectric is fixed with a silicon adhesive or the like.

  On the rear side of the heating chamber behind the rear plate 12c, as shown in FIG. 6, there are rod-like heaters (quartz-sheath heaters) 30 of a hot-air circulating heating device, fans 31 (centrifugal fans), and drive means for driving the fans 31. Has been placed. The driving means includes a motor 32, pulleys 33a and 33b, and a belt 34 that is wound around the pulleys 33a and 33b and transmits the output of the motor 32. Further, a heat shield unit 35 is disposed on the back surface of the rod-shaped heater 30. In addition, the kind and shape of the heater and fan used for each part are not limited, What can acquire an effect by each use can be selected suitably.

  Further, as shown in FIGS. 3, 4, and 6, a magnetron 21 that is a high-frequency generating means disposed in the electric chamber 13 and the lower heating unit 17 are connected by a waveguide 19. The magnetron 21 oscillates a high frequency when the driving power is supplied by the high voltage power generation means 36 that is a driving power supply means, and emits the high frequency from the antenna 18 into the heating chamber 11 via the waveguide 19. At this time, the antenna 18 is connected to the motor 20 and is rotating. The heat generating devices such as the magnetron 21 are cooled by a cooling fan 37 provided in the electric chamber 13 during driving.

  The door 4 that opens and closes the front opening 2 of the heating chamber 11 is attached to the main body 1 via a hinge 38 (FIG. 4) provided at the lower part. The door 4 is provided with a flat metal portion 4 a (FIG. 5) at a position facing the opening surface of the heating chamber 11, and contacts the peripheral edge portion of the front opening 2 of the main body 1 with the door 4 closed. It is in a positional relationship. The flat metal portion 4a is placed in a horizontal state with the bottom plate 12a of the heating chamber 11 when the door 4 is fully opened. The flat metal portion 4a of the door 4 facing the upper and lower edges of the front opening 2 of the main body 1 and the flat metal portion 4a of the door 4 facing the left and right edges of the front opening 2 of the main body 1 2 and approximately the same position.

  The opening position of the door 4 is regulated in a substantially horizontal state by the arm 5. On the back surface of the door 4, a lock claw 7 and a closing detection protrusion 6 for operating the oscillation stop device 15 are provided. Among them, the lock claw 7 enters the lock hole 9 provided in the main body 1 when the door is closed, and operates the switch 15b of the oscillation stop device 15 so that the door 4 can be locked in the closed state. Further, the closing detection protrusion 6 enters the detection hole 8 provided in the main body 1 when the door is closed, and operates the switch 15a of the oscillation stop device 15 so that the closed state of the door 4 is detected. . The closing detection signal is used for safety stop control of the magnetron 21, and is configured to be stopped when the door is opened. The oscillation stopping device 15 is connected to a metallic holding component 27 (FIG. 3) with a screw or the like, and the holding component 27 itself of the oscillation stopping device 15 is joined to the front plate 12e by caulking or the like.

  The right side position of the door 4 that does not face the front opening 2 of the heating chamber 11 when viewed from the front, that is, the electric chamber side position of the door 4 and the area within the range of about ３ from the right side of the main body width, 14 is provided integrally with the door 4. The operation unit 14 includes, for example, a display unit (not shown) for displaying heating time, a selection button (not shown) for selecting high-frequency heating or heater heating, and an input button (FIG. 5) for inputting heating conditions such as heating time. (Not shown).

  By the way, by installing the operation unit 14 integrated with the door on the right side of the door 4, the right side of the door becomes longer. Therefore, it is necessary to improve the protection of the operation unit 14 and the strength of the door. Therefore, as shown in FIGS. 4 and 5, the metal reinforcing member 28 is joined to the metallic main door structure 4 d constituting the skeleton of the door 4. The main door structure 4d is provided with a comb-like periodic structure (choke structure) having a slit for preventing radio wave leakage on the back side facing the front plate 12e at the periphery of the front opening 2 of the main body 1. It has been. Thereby, the deformation of the door 4 due to heat and external force is prevented, the flatness of the door 4 is improved, and the radio wave leakage prevention performance is improved.

  Further, on the left and right sides of the reinforcing member 28, as shown in FIG. 5, locking portions 23 and 24 having pins 23a and 24a for hooking the arms 5 are integrally provided. Thereby, the arm 5 can be locked at both the left end portion and the right end portion of the door 4 without adding a new part particularly on the right side of the door. When the door 4 is opened and substantially horizontal, the door 4 is supported by the arms 5 disposed at the left and right ends of the door 4, so that deformation or the like occurs even if an object to be heated is placed on the door 4. In addition, since no gap is generated when the door is closed, problems such as radio wave leakage do not occur. In addition, even if both ends are supported, the height of the main body 1 can be reduced to about 250 mm or less, and the length of the right side of the door is longer, so the span of the support portion is longer. The support part does not get in the way.

  By joining the reinforcing member 28 to the main door structure 4d, the strength can be improved also in the right part of the door 4. For this reason, the to-be-heated material can be temporarily placed in a space that spreads to the right side of the door 4, and convenience is improved.

  In addition, since the hook portion at the tip of the arm 5 can be locked to the locking portion 24 at the end portion on the right side of the door 4, particularly on the right side of the operating portion 14, The spring 25 that is hooked and urges the door 4 is not disposed in the back of the electric chamber 13 as in the prior art (FIGS. 3 and 4). For this reason, since the spring 25 can be easily assembled and removed, the assembling workability and the maintainability can be improved.

  In addition, the operation unit 14 integrated with the door 4 is installed on the right side of the door 4, and the oscillation stop device 15 is arranged inside the arm 5, that is, between the heating chamber 11 and the electric chamber 13 of the main body 1. Although the cooking device has a compact main body (the height of the main body is about 250 mm or less), the operation buttons and the display unit are not small, and the operation unit 14 is easy to see, operate, and easy to use.

  Furthermore, conventionally, an electric chamber is provided on one side (right end) of the main body, an operation unit is attached to the front plate on the front surface of the electric chamber, and the front plate is uneven, but according to the present embodiment, Since the operation unit 14 is integrated with the door 4, there are no parts attached to the front plate 12e on the front surface of the electric chamber 13, and the front plate becomes flat as a whole as shown in FIG. . Furthermore, since the front plate 12e on the front surface of the electric room 13 is easily noticeable, it can be used as a place for attaching a sheet for improving convenience, such as a cooking menu list or operation guidance, or a label for calling attention. It can be effectively used as the pasting place 121e for pasting the nameplates.

  In addition, the pasting place 121e of the front plate 12e is a place where the operation unit is conventionally provided, and the board 26 (see FIG. 3) of the operation unit 14 is projected to the electric chamber 13 side. For this reason, conventionally, there is a hole communicating with the electrical chamber 13 at a site that becomes the pasting place 121e of the front plate 12e. For this reason, a slight amount of steam, oily smoke, or the like enters the electric chamber 13 or the substrate 26 from the gap between the front plate 12e and the operation unit 14, and there is a problem that causes malfunction or ignition due to condensation or dust adhesion. there were.

  However, in the high frequency heating cooker of the present embodiment, the operation unit 14 is provided on the door 4 side, and the operation unit 14 is not attached to the pasting place 121e of the front plate 12e. A through-hole for the operation unit 14 is not required in the front plate in front of the sheet, that is, the pasting place 121e, and dirt such as steam and oily smoke and dust can be prevented from entering the electric chamber 13.

  Furthermore, even if it ignites in the electric chamber 13, since the through-hole for the operation part 14 is not formed in the sticking place 121e in front of the electric chamber 13 in the front plate 12e, from the electric chamber 13 to the outside Can be prevented.

  In the above-described embodiment, the operation unit 14 is integrally disposed on the right side of the door 4, the electric chamber 13 is disposed on the right side of the main body 1, and the heating chamber 11 is disposed on the left side. These positional relationships may be reversed. That is, the operation unit 14 may be integrally disposed on the left side of the door 4, the electric chamber 13 may be disposed on the left side of the main body 1, and the heating chamber 11 may be disposed on the right side.

  1 Main body, 2 Front opening, 3 Window, 4 Door, 4a Flat metal part, 4b Door front plate, 4c Dielectric door rear plate, 4d Main door structure, 5 Arm, 6 Closure detection protrusion, 7 Lock Claw, 8 detection hole, 9 lock hole, 10 exterior plate, 11 heating chamber, 12 face material, 12a bottom plate, 12b side plate, 12c rear plate, 12d top plate, 12e front plate, 13 electrical chamber, 14 operation unit, 15 oscillation Stop device, 15a, 15b switch, 16 upper heating part, 17 lower heating part, 18 antenna, 19 waveguide, 20 motor, 21 magnetron (high frequency generating means), 22 handle, 23, 24 locking part, 23a, 24a Pin, 25 Spring, 26 Substrate, 27 Holding part, 28 Reinforcement member, 29 Mounting plate, 30 Hot air circulation heater, 31 Fan, 32 Motor, 33a, 33 Pulley, 34 belt, 35 thermal barrier unit, 36 high voltage power generating unit (drive power supply unit), 37 cooling fan, 38 a hinge 39 top table, 121a lower aperture portion, 121d upper aperture portion, 121e sticking place.

Claims (2)

The inside is defined by a heating chamber and an electric chamber, and the heating chamber has a main body formed with a front opening for taking in and out food,
A vertically open door provided to be openable and closable so as to cover the front opening of the heating chamber and the electric chamber;
In the door, an operation part is integrally arranged at a part corresponding to the electric chamber,
The electric chamber of the main body includes a high frequency generation means, a driving power supply means for supplying power to the high frequency generation means, and a waveguide for guiding the generated high frequency to the heating chamber and supplying the heating chamber to the heating chamber. Place and
A pair of arms that regulate the opening angle of the door is provided between the left and right ends of the door and the vicinity of the exterior plate on the left and right of the main body,
A high-frequency cooking device, wherein an oscillation stop device is disposed between the heating chamber and the electrical chamber to stop the high-frequency generating means in conjunction with the opening / closing operation of the door. The metallic main door structure that forms the skeleton of the door is provided with a periodic structure that prevents radio wave leakage from the front opening of the heating chamber, and the protection of the operation unit and the strength of the door are ensured. For joining metallic reinforcement members for
The high frequency cooking device according to claim 1, wherein the reinforcing member is integrally provided with a locking portion for locking the arm.

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