JP2014009898A - Stove with high frequency heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stove with a high frequency heating device capable of widening an opening portion of a heating chamber while properly preventing leakage of a high frequency.SOLUTION: In the stove with the high frequency heating device in which the high frequency heating device is disposed while opening its opening portion 4 to a front face portion of a body case 2, the high frequency heating device includes a drawer portion H having a placing base 12 on which a heated object can be placed, and guide means for supporting the drawer portion H movably forward and backward between a storage position to be stored in the heating chamber 3 and a draw-out position to be drawn out to a front part of the heating chamber 3, a door 5 is disposed on the drawer portion H so that it closes the opening portion 4 when the drawer portion H is located at the storage position, the door 5 is provided with a projecting portion 13 entering the heating chamber 3 in a state that its outer peripheral face is opposed to an inner peripheral face of the heating chamber 3 over the whole periphery in a state of closing the opening portion 4, and a high frequency shielding portion 14 is disposed on a part opposed to the inner peripheral face of the heating chamber 3, of the projecting portion 13.

Description

  The present invention provides a heating unit for a stove for heating a cooking container placed on the top plate in a main body case provided with the top plate, and an opening for taking in and out the heating object in the heating cabinet and the heating cabinet. A high-frequency heating device that includes a door that opens and closes and heats an object to be heated in the heating chamber with a high frequency is provided, and the high-frequency heating device is provided in a form in which the opening is opened on the front surface of the main body case. This relates to a stove with a high-frequency heating device.

  Such a stove with a high-frequency heating device is equipped with a high-frequency heating device (so-called microwave oven) that heats and heats an object to be heated, and the high-frequency heating device is integrated with a built-in type stove or a stationary type stove. Therefore, it is excellent in space saving (for example, refer to Patent Document 1). Incidentally, the built-in type stove is installed in an installation space below a counter of a system kitchen or the like, and the stationary type stove is placed on a kitchen cabinet or the like.

By the way, in such a high frequency heating apparatus, the high frequency shielding part which prevents a high frequency leaking from the clearance gap between the opening part of a heating chamber and a door is provided.
Although not disclosed in the above Patent Document 1, conventionally, the front surface of the heating chamber (the outer peripheral surface of the opening) is configured in a frame shape that is parallel to the surface along the opening edge of the opening. The door-side contact surface that can be applied to the frame-shaped front surface of the heating cabinet is provided on the outer periphery of the rear surface of the door, and the high-frequency shielding portion is provided on the back side of the frame-shaped front surface of the heating cabinet or the door-side application surface of the door. It was provided in either one of the back side.

JP 2010-142437 A

By the way, in order to make the high-frequency shielding action by the high-frequency shielding part sufficient, it is preferable that the width of the part facing the gap between the opening of the heating chamber and the door is made as long as possible in the high-frequency shielding part.
Conventionally, since the high frequency shielding part is provided on either the back side of the frame-shaped front surface of the heating cabinet or the back side of the door side application surface of the door, the high frequency shielding action by the high frequency shielding part is sufficient. Therefore, it is necessary to make the edge width of the frame-shaped front surface of the heating cabinet as wide as possible (the width between the inner edge and the outer edge of the frame-shaped front surface).

On the other hand, for example, a built-in type stove needs to be installed in a prescribed installation space below the counter. For such a stove with a high-frequency heating device, the maximum size of the main body case is prescribed. ing. Therefore, the maximum dimension of the outer shape of the heating chamber is also limited according to the specified maximum outer dimension of the main body case. Naturally, the maximum dimension of the outer periphery of the front surface of the heating chamber is also the predetermined maximum value on the front surface of the main body case. Limited according to external dimensions.
Therefore, in the conventional stove with a high-frequency heating device, it is necessary to make the edge width of the frame-shaped front surface of the heating cabinet as wide as possible. In particular, when the opening width in the vertical direction of the opening portion becomes narrow, a tall container (for example, a glass cup) cannot be put in the heating chamber, and the usability is bad.

  This invention is made | formed in view of this situation, The objective is to provide the stove with a high frequency heating apparatus which can widen the opening part of a heating chamber, preventing the leakage of a high frequency appropriately.

The stove with a high-frequency heating device of the present invention includes a heating unit for a stove that heats a cooking container placed on the top plate in a main body case provided with the top plate, a heating chamber, and an object to be heated in the heating chamber. A high-frequency heating device that includes a door that opens and closes an opening for taking in and out and heats an object to be heated in the heating chamber with a high frequency is provided,
The high-frequency heating device is provided in a form in which the opening is opened in the front portion of the main body case,
In the first characteristic configuration, the high-frequency heating device has a drawer portion having a mounting table on which an object to be heated can be placed, a storage position in which the drawer portion is stored in the heating chamber, and a front portion of the heating chamber. And a guide means for supporting the drawer position in a state where it can be moved back and forth.
The door is provided in the drawer portion so as to close the opening when the drawer portion is located at the storage position;
A protrusion that protrudes into the door at the back side of the heating chamber and enters the heating chamber in a state where the door closes the opening and an outer peripheral surface faces the inner peripheral surface of the heating chamber over the entire circumference. Part is provided,
The high frequency shielding part is provided in the part which opposes the internal peripheral surface of the said heating chamber in the said convex part.

According to the above characteristic configuration, when the drawer portion is pushed into the storage position, the convex portion of the door enters the heating chamber from the opening portion, and the door is positioned to close the opening portion. If it is located in the position which closes, the outer peripheral surface of the convex part will be in the state which opposes the inner peripheral surface of a heating chamber over the perimeter. Since the high frequency shielding part is provided in the part of the outer peripheral surface of the convex portion that faces the inner peripheral surface of the heating chamber, the high frequency leaks to the outside through the gap between the opening of the heating chamber and the door. Properly prevented.
By the way, in such a stove with a high-frequency heating device, when the door is accidentally opened in a state where a high frequency is generated, in order to prevent leakage of the high frequency, the door opening detecting means for detecting that the door is opened. When the opening is detected by the opening detection means, there is provided an abnormal opening leakage prevention means for stopping the generation of high frequency.
According to the above characteristic configuration, even if the drawer portion is accidentally pulled out in a state where high frequency is generated, immediately after the drawing, the state where the high frequency shielding portion faces the inner peripheral surface of the heating chamber is maintained, and the high frequency is Since it is shielded, it is more appropriately prevented that the high frequency leaks to the outside of the heating cabinet by the synergistic action with the leakage preventing means at abnormal opening.

And since the high frequency shielding part is provided in the above-mentioned part in the convex part of the door which enters the heating chamber when the door is located at the position where the opening is closed, the heating chamber is provided to provide the high frequency shielding part. Since it is not necessary to widen the frame width of the frame-shaped front surface of the outer periphery of the opening, by narrowing the width of the frame-shaped front surface of the outer periphery of the opening, even when the maximum dimension of the outer periphery of the front surface of the heating chamber is limited The opening can be widened. In particular, by widening the opening width in the vertical direction of the opening, a tall container (for example, a glass cup) can be placed in the heating chamber, and the usability is improved.
Therefore, it has become possible to provide a stove with a high-frequency heating device that can widen the opening of the heating chamber while appropriately preventing high-frequency leakage.

In addition to the first feature configuration, the second feature configuration is
The guide rail includes a fixed rail fixed to the heating chamber side, and a slide rail including a movable rail supported by the fixed rail so as to be movable over the storage position and the drawer position and supporting the drawer portion. It consists of
The location of the door on the outer peripheral side with respect to the convex portion is supported by the tip of the movable rail.

According to the above characteristic configuration, the slide rail can be provided outside the heating chamber, and the drawer portion can be moved back and forth by the slide rail, so that the opening of the heating chamber can be opened and closed by the door.
Therefore, since the usable space in the heating chamber can be further widened, the usability can be further improved.

In addition to the first or second feature configuration, the third feature configuration is
Attenuation passage forming member that forms a narrow high-frequency attenuation passage that attenuates high-frequency with the inner peripheral surface of the heating chamber in the moving direction of the drawer portion with respect to the high-frequency shielding portion and close to the inner side of the heating chamber. Is in the point provided.

According to the above characteristic configuration, the high frequency passes from the inside of the heating chamber through the high frequency attenuation passage to the high frequency shielding portion, attenuates while passing through the narrow high frequency attenuation passage, and is further attenuated by the high frequency shielding portion. Since it is shielded, it can prevent more reliably that a high frequency leaks outside the heating chamber.
Therefore, the ability to prevent high-frequency leakage can be further improved.

In addition to the third feature configuration, the fourth feature configuration is
The outer peripheral surface forming member that forms the outer peripheral surface of the convex portion is configured to extend to the back side of the heating chamber in the moving direction of the drawer portion than the high frequency shielding portion,
The attenuation passage forming member is constituted by a portion on the back side of the heating chamber in the moving direction of the drawing portion with respect to the high frequency shielding portion in the outer peripheral surface forming member.

According to the above characteristic configuration, the attenuation passage forming member is constituted by a portion on the back side of the heating chamber in the moving direction of the drawing portion rather than the high frequency shielding portion in the outer peripheral surface forming member forming the outer peripheral surface of the convex portion. That is, since the attenuation passage forming member is integrally formed with the convex portion of the door, the manufacturing process can be simplified and the cost can be reduced.
Therefore, it is possible to further improve the high-frequency leakage prevention capability while avoiding an increase in price.

In addition to any one of the first to fourth feature configurations described above, the fifth feature configuration is
The waveguide for propagating the high frequency generated from the magnetron into the heating chamber is configured in a flat shape whose width is narrower than the width in the left-right direction on the upper surface of the heating chamber,
The flat waveguide is provided at the center in the left-right direction on the upper surface of the heating chamber in a posture in which the thickness direction is directed in the up-down direction,
Exhaust ports for exhausting air from the inside of the heating chamber are provided on both the left and right sides of the waveguide on the upper surface of the heating chamber,
The exhaust duct for guiding the exhaust from the exhaust port is provided in the main body case in such a form that an opening on the downstream side opens in a portion on the rear side of the top plate.

As in the above characteristic configuration, the waveguide is configured to have a flat shape whose width is narrower than the width in the left-right direction on the upper surface of the heating chamber, and an exhaust duct that exhausts the exhaust in the waveguide and the heating chamber; Can be arranged in a compact manner above the heating chamber, and the height of the heating chamber can be further increased by that amount. it can.
Therefore, the opening width in the vertical direction of the opening can be further increased.

In addition to the fifth feature configuration, the sixth feature configuration is
A plurality of electrical components including the magnetron, a high-voltage transformer and a high-voltage capacitor that drive the magnetron, and a cooling fan that cools the plurality of electrical components are provided in a portion on the rear side of the heating chamber in the main body case. It is in the point provided.

According to the above-described characteristic configuration, a plurality of heat generating electrical parts such as a magnetron, a high voltage transformer, and a high voltage capacitor, and a cooling fan for cooling the plurality of electrical parts are grouped in a rear part of the heating chamber in the main body case. And can be arranged compactly, and accordingly, the outer shape of the heating chamber can be enlarged.
Therefore, the inside of the heating chamber can be further widened.

In addition to the sixth feature configuration, the seventh feature configuration is
The exhaust duct is configured to discharge the cooling air ventilated by the cooling fan.

According to the above-described characteristic configuration, the exhaust air in the heating chamber and the cooling air ventilated by the cooling fan are discharged to the outside of the main body case by one exhaust duct, so that the cost can be reduced by simplifying the configuration.
Therefore, it is possible to appropriately discharge the cooling air ventilated by the exhaust in the heating chamber and the cooling fan while avoiding an increase in price.

Perspective view showing the appearance of a stove with a high-frequency heating device Vertical right side view of a stove with a high-frequency heating device Perspective view showing appearance of high-frequency heating device Plan view of high-frequency heating device The perspective view which shows the external appearance of the door of a high frequency heating device Disassembled perspective view of the door of the high-frequency heating device Disassembled perspective view of the door of the high-frequency heating device Longitudinal right side view of the main part of the high-frequency heating device with the drawer pulled out Longitudinal right side view of the main part of the high-frequency heating device with the drawer part stored

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, a stove with a high-frequency heating device (hereinafter sometimes abbreviated as a stove) is a pan placed on the top plate 1 in a main body case 2 provided with the top plate 1. Opening and closing of three gas stove gas burners B as a heating unit for a stove for heating a cooking container (not shown), a heating chamber 3 (see FIG. 2), and an opening 4 for heating and unloading the heating chamber 3 A high-frequency heating device R that includes a door 5 that heats an object to be heated (not shown) in the heating chamber 3 with a high frequency is provided, and is configured as a built-in type stove.

The main body case 2 is formed in a box shape having a substantially flat rectangular parallelepiped shape with the upper portion opened over substantially the entire surface, and the upper portion of the main body case 2 is covered with the top plate 1. The top plate 1 is formed with three burner openings (not shown) for arranging three stove burners B, and each stove burner B ejects a mixture of gas fuel and air. Thus, the burner head Bh that forms a flame is provided below the top plate 1 in such a manner that the burner head Bh protrudes upward through each burner opening. On the top surface of the top plate 1, the five victories 6 on which the heating containers are placed are detachably placed and supported so as to correspond to each of the three burners B.
An exhaust opening 1e is formed at the rear portion of the top plate 1 to face the outlet opening at the tip of an exhaust duct 7 (explained in detail later) for exhausting the exhaust from the high-frequency heating device R.

As shown in FIG. 1, when viewed from the front, the left side portion of the front surface of the main body case 2 is covered with a range operation unit cover plate 9 including a range operation unit 8 for operating the high-frequency heating device R. The right portion is covered with a stove operation unit cover plate 11 having three stove operation units 10 for operating the stove burner B.
The high-frequency heating apparatus R has an opening 4 of the heating chamber 3 in the main body case 2 in a form in which the opening 4 is opened between the range operation cover plate 9 and the stove operation cover plate 11 on the front surface of the main body case 2. It is arranged.
Since the present invention is mainly related to the high-frequency heating device R, description of the stove burner B will be omitted, and the high-frequency heating device R will be described in detail below.

As shown in FIGS. 2 and 3, in the present invention, the high-frequency heating device R accommodates the drawer H having the mounting table 12 on which the object to be heated can be placed, and the drawer H in the heating chamber 3. When the door 5 is located at the retracted position (FIG. 2), the guide means G is supported so as to be movable in and out of the retracted position and the retracted position pulled out to the front of the heating chamber 3 (FIG. 2). (See FIG. 4), the lead-out portion H is provided so that the opening 4 is closed.
Then, as shown in FIGS. 5, 8, and 9, the door 5 is closed in the opening 4, and the outer peripheral surface is opposed to the inner peripheral surface of the heating chamber 3 over the entire circumference. The convex part 13 which enters is provided, and the choke structure 14 as a high frequency shielding part is provided in a part of the convex part 13 facing the inner peripheral surface of the heating chamber 3. As can be determined from FIG. 2, when the door 5 closes the opening 4, the convex portion 13 of the door 5 enters the heating chamber 3.

Next, description will be made regarding each part of the high-frequency heating device R. In the following description, the front side of the main body case 2 is viewed from the front, the front side is defined as the front side, the back side is defined as the rear side, and further, the left and right directions are defined in the front view. . That is, the front-rear direction is a direction parallel to the moving direction of the drawer portion H, the front side corresponds to the side from which the drawer portion H is pulled out, and the rear side corresponds to the side from which the drawer portion H is pushed.
As shown in FIG.2 and FIG.3, the heating chamber 3 is comprised by the box shape of the substantially rectangular parallelepiped shape which the front opened at the opening part 4, The height is lower than the height in the main body case 2, and depth is The depth is set to be shorter than the depth in the main body case 2. As shown in FIGS. 2 and 4, in the heating chamber 3, a flat upper storage space 15 is formed between the ceiling wall portion and the top plate 1, and the rear wall portion and the main body case 2 are A rear housing space 16 is formed between the rear wall portion and the rear wall portion, and is disposed in the main body case 2.

As shown in FIGS. 2 and 4, the rear storage space 16 behind the heating chamber 3 in the main body case 2 includes a magnetron 17 that generates a high frequency, a high-voltage transformer 18 that drives the magnetron 17, and a high-voltage capacitor 19. A plurality of electrical components (not shown except for the magnetron 17, high voltage transformer 18 and high voltage capacitor 19) and a cooling fan 20 for cooling the plurality of electrical components are provided.
The magnetron 17, the high-voltage transformer 18 and the high-voltage capacitor 19 are arranged in such a manner that the magnetron 17 and the high-voltage capacitor 19 are located in the left and right substantially central portions, and the high-voltage transformer 18 is located adjacent to the left side of the magnetron 17 in plan view. The rear storage space 16 is disposed.
The cooling fan 20 is disposed in the right end portion of the rear storage space 16 so as to allow cooling air to flow leftward in a plan view, and includes a plurality of electrical components including a magnetron 17, a high voltage transformer 18, and a high voltage capacitor 19. It is configured to cool them by passing cooling air toward them.

As shown in FIGS. 2 to 4, the waveguide 21 for propagating the high frequency generated from the magnetron 17 into the heating chamber 3 is configured to have a flat shape whose width is narrower than the width in the left-right direction on the upper surface of the heating chamber 3. ing. Then, the flat waveguide 21 is positioned at the central portion in the left-right direction on the upper surface of the heating chamber 3 with the thickness direction oriented in the vertical direction, and above the heating chamber 3 in the main body case 2. The upper storage space 15 is disposed.
A stirrer 22 is provided on the ceiling side in the heating chamber 3 to stir the high-frequency wave propagated by the waveguide 21 in the heating chamber 3, and a stirrer electric motor 23 that rotates the stirrer 22 is provided in the waveguide. It is disposed in the upper storage space 15 in a state of being placed on the upper portion of 21.

As shown in FIGS. 3 and 4, exhaust ports 24 for exhausting the exhaust in the heating chamber 3 are provided on both the left and right sides of the waveguide 21 on the rear side of the ceiling portion of the heating chamber 3.
As shown in FIGS. 2 to 4, the exhaust duct 7 connects the inlet opening to the two exhaust outlets 24 of the heating chamber, and the outlet outlet at the tip is the exhaust opening of the top plate 1. In the state facing the portion 1 e, the upper portion of the rear storage space 16 is passed through and disposed in the main body case 2.
In the lower wall portion of the exhaust duct 7 that covers the upper portion of the rear storage space 16, the portion corresponding to the upper portion of the magnetron 17 and the high voltage capacitor 19 and the portion corresponding to the upper portion of the high voltage transformer 18 are respectively A cooling air introduction port 7 i for introducing the cooling air ventilated by the cooling fan 20 is provided.
That is, the exhaust duct 7 is configured to discharge the cooling air that is ventilated by the cooling fan 20 together with the exhaust from the heating chamber 3.

As shown in FIGS. 3 and 5, the guide means G is a fixed rail 26 fixed to the heating chamber 3 side, and is supported by the fixed rail 26 so as to be movable over the storage position and the pull-out position, and the pull-out portion H is supported. The slide rail 25 includes a movable rail 27 to be supported.
A pair of slide rails 25 are provided separately on the left and right sides of the heating chamber 3, and the left and right sides on the outer peripheral side of the convex portion 13 of the door 5 are arranged on the movable rails 27 of the pair of slide rails 25. Supported at the tip.

As shown in FIGS. 5 and 8, the mounting table 12 is supported so as to extend rearward at a lower end of a surface portion (hereinafter sometimes referred to as a rear surface) facing the rear side of the convex portion 13 of the door 5. Yes.
A portion on the outer peripheral side of the convex portion 13 in the door 5 is configured as a rectangular frame-shaped abutting surface 28 parallel to a thickness direction of the door 5, that is, a surface orthogonal to the moving direction of the drawer portion H.
Further, when the door 5 is in a state of closing the opening 4 of the heating chamber 3, an abutting surface 28 on the outer periphery of the convex portion 13 of the door 5 is applied to the outer peripheral portion of the opening 4 of the heating chamber 3. A frame-shaped front portion 29 having a rectangular frame shape having a surface parallel to a surface orthogonal to the moving direction of the drawer portion H is provided.
As shown in FIG. 3, each slide rail 25 has left and right wall portions of the heating chamber 3 in a state where each movable rail 27 is movable through a rail insertion hole 29 h formed in the frame-shaped front surface portion 29. It is attached to the lower end part in the outer surface.
Further, as shown in FIG. 5, the lower ends of the left and right sides of the abutting surface 28 on the outer periphery of the convex portion 13 of the door 5 are supported at the tip of the movable rail 27 of each slide rail 25.
And as shown in FIG.8 and FIG.9, if the door 5 is moved back by guidance of a pair of slide rail 25, the convex part 13 of the door 5 will enter into the heating chamber 3 from the opening part 4, The opening 4 of the heating chamber 3 is closed by the door 5 in a state where the abutting surface 28 on the outer periphery of the convex portion 13 is applied to the front surface of the frame-shaped front surface portion 29 on the outer periphery of the opening 4 of the heating chamber 3.

Next, the door will be described with reference to FIGS.
The door 5 is a rectangular frame-shaped choke cover in a front view that configures a door body 30 that forms a rear portion of the convex portion 13 and an abutting surface 28 of the front portion of the convex portion 13 and the outer periphery of the convex portion 13. 40, a rectangular frame-shaped decorative plate 31 in front view that constitutes a front side portion of the door 5, a handle 32 attached to the front lower end portion of the decorative plate 31, and a glass plate that covers the frame of the decorative plate 31 33.
The door body 30 has a rectangular shape when viewed from the front, and a lid plate member 50 provided with a front-standing standing wall portion 51 that stands at a right angle over the entire outer periphery, and a rectangular frame shape when viewed from the front, and is perpendicular to the rear over the entire outer periphery. A rear-side choke component 60 connected to the lid plate member 50 in a state in which the rearward standing wall portion 61 stands against the inner surface of the forward-standing standing wall portion 51 of the lid plate member 50. , A rectangular frame shape when viewed from the front, and disposed between the cover plate member 50 and the rear choke component 60 so as to support the cover plate member 50 and the rear choke component 60 in a spaced state. And a front choke component 80 that is connected to the front side of the rear choke component 60. Yes.
The cover plate member 50, the rear choke component 60, the spacing member 70, and the front choke member 80 are all made of metal, and the cover plate member 50 has a large number of holes that can shield high frequencies. Is formed. Moreover, the member which forms the internal peripheral surface of the heating chamber 3, and the member which forms the frame-shaped front part 29 are also metal.

The spacing member 70 is configured in a two-stage shape in which a rectangular frame-shaped inner side portion protrudes forward, and an outer step portion 71 constituting an outer step is connected to the front surface of the lid plate material 50. In addition, an inner stage portion 72 constituting an inner stage is connected to the rear surface of the rear choke component 60.
The front choke component 80 having a rectangular frame shape in front view includes a front wall portion 81 corresponding to the bottom portion of the ridge and an outer peripheral wall portion 82 surrounding the rim of the ridge in a direction perpendicular to the moving direction of the drawer portion H. The inner peripheral wall portion 83 encloses the inner periphery of the bag, and the connecting wall portion 84 extends from the rear end of the inner peripheral wall portion 83 to the inside of the frame.
The front wall portion 81 of the front choke component 80 extends in a direction orthogonal to the movement direction of the drawer portion H in a direction orthogonal to the movement direction of the drawer portion H, and includes an outer peripheral wall portion 82 and an inner peripheral wall portion 83. Each extends in the front-rear direction, that is, along the moving direction of the lead-out portion H, and the connecting wall portion 84 is configured to extend along a direction orthogonal to the moving direction of the lead-out portion H.

The height of the outer peripheral wall portion 82 of the front choke component 80 (the dimension in the direction along the moving direction of the drawer portion H) is the same as the height of the inner peripheral wall portion 83 (the direction along the moving direction of the drawer portion H). ) Is set slightly lower.
Further, the front choke component 80 has a large number of slits 85 extending from the rear end edge of the outer peripheral wall portion 82 (corresponding to the back side of the heating chamber 3) to the middle portion of the front wall portion 81 in the frame inside / outside direction. Provided over the entire circumference at equal intervals, the front choke component 80 is configured in a comb-like shape by a front wall portion 81 and an outer wall portion 82.
The front choke component 80 is connected to the rear choke component 60 in a state where the connecting wall portion 84 is connected to the front surface of the rear choke component 60. The front side choke component 80 (specifically, the front wall portion 81, the outer peripheral wall portion 82, and the inner peripheral wall portion 83) and the rear side choke component 60 slit the plurality of bag-path-shaped choke boxes 14c. The choke structures 14 are arranged in a rectangular frame shape when viewed from the front surface with a distance of 85 therebetween. In the rectangular frame-shaped choke structure 14, a choke inlet 34 formed by the rear end edge of the outer peripheral wall portion 82 of the front choke component 80 and the front surface of the rear choke component 60 has a rectangular frame shape. It is provided over the circumference.

The choke cover 40 includes a frame portion 41 having a rectangular frame shape when viewed from the front, a forward standing wall portion 42 that stands vertically at the entire outer periphery of the frame portion 41 in the frame inner / outer direction, and an inward / outward direction of the frame portion 41. An outer peripheral side rearward standing wall portion 43 standing at a right angle from the middle portion of the frame portion 41 to the rear, and an inner peripheral side rearward standing wall portion 44 standing at a right angle rearward over the entire inner circumference of the frame portion 41 in the frame inner / outer direction. It is configured in the shape provided.
The length of the choke cover 40 in the direction along the moving direction of the lead-out portion H in the rearward standing upright wall portion 43 of the choke cover 40 is the direction along the direction of movement of the lead-out portion H in the inner peripheral wall portion 83 of the front choke component 80. It is set to be approximately the same as the length of.
The choke cover 40 applies the inner peripheral surface of the outer peripheral rearward standing wall portion 43 to the outer peripheral surface of the outer peripheral wall portion 82 of the front choke component 80, and the rear surface of the frame portion 41 is the front choke. It is connected to the front of the door body 30 in a state of being applied to the front surface of the front wall portion 81 of the component 80.
That is, the outer peripheral portion (including the choke inlet 34) of the rectangular frame-like choke structure 14 as viewed from the front is covered by the outer peripheral side rearward standing wall portion 44 of the choke cover 40 over the entire circumference.

As shown in FIG. 9, with the door 5 closing the opening 4 of the heating chamber 3, between the outer peripheral surface of the forward standing wall portion 51 of the cover plate member 50 in the convex portion 13 and the inner peripheral surface of the heating chamber 3. A high frequency attenuation passage 35 for attenuating high frequency is formed in front of the choke structure 14.
That is, the forwardly rising wall portion 51 of the cover plate member 50 in the convex portion 13 is close to the back side of the heating chamber 3 in the moving direction of the drawer portion H with respect to the choke structure 14, and by the inner peripheral surface of the heating chamber 3. It functions as an attenuation passage forming member 36 that forms a narrow high frequency attenuation passage 35 that attenuates high frequencies.
The outer peripheral surface forming member 37 that forms the outer peripheral surface of the convex portion 13 is composed of the outer peripheral side rearward standing wall portion 43 of the choke cover 40 and the forward standing wall portion 51 of the lid plate member 50. Is also configured to extend to the inner side of the heating chamber H in the moving direction of the drawer portion H, and the attenuation passage forming member 36 is formed in the moving chamber 3 in the moving direction of the drawer portion H rather than the choke structure 14 in the outer peripheral surface forming member 37. The rear side portion, that is, the forward standing wall portion 51 of the cover plate member 50 is constituted.

The high frequency shielding action by the high frequency attenuation passage 35 and the choke structure 14 will be described.
The high frequency propagated from the inside of the heating chamber 3 to the gap between the heating chamber 3 and the door 5 first passes through the narrow high-frequency attenuation passage 35 and attenuates, and then enters the choke structure 14. In the choke structure 14, a high frequency that is about to leak from the gap between the heating chamber 3 and the door 5 is guided from the choke inlet 34 into the bag path-like choke box body 14 c, reflected by the inner surface of the choke box body 14 c, and the reflected wave and choke The high frequency incident from the inlet 34 is combined and the high frequency voltage at the choke inlet 34 is maximized and the current is minimized, thereby shielding the high frequency.
That is, the high frequency propagated from the inside of the heating chamber 3 to the gap between the heating chamber 3 and the door 5 is first attenuated by the high frequency attenuation passage 35 and then leaked from the gap between the heating chamber 3 and the door 5 by the choke structure 14. , So that high frequency leakage can be sufficiently prevented.

  And the choke structure 14 is provided in the site | part which opposes the internal peripheral surface of the heating chamber 3 in the convex part 13 of the door 5 which enters in the heating chamber 3, when the door 5 is located in the position which closes the opening part 4. FIG. Therefore, the opening 4 can be widened by narrowing the edge width of the frame-shaped front surface portion 29 on the outer periphery of the opening 4.

[Another embodiment]
Next, another embodiment will be described.
(A) The specific configuration of the guide means G is not limited to the slide rail 25 exemplified in the above embodiment, and various configurations such as a configuration using a link mechanism and a configuration using an electric cylinder are possible. Can be used.

(B) In the above embodiment, the attenuation passage forming member 36 is provided on the convex portion 13 of the door 5, but it may be provided on the inner peripheral surface of the heating chamber 3.

(C) The high-frequency attenuation passage 35 may be omitted. If the high-frequency attenuation passage 35 is omitted, the depth of the convex portion 13 of the door 5 can be shortened, so that the usable space in the heating chamber can be further widened.

(D) The specific configuration of the choke structure 14 is not limited to the configuration illustrated in the above embodiment, and various configurations can be used.

(E) In the above embodiment, the present invention is applied to a stove with a high frequency heating device using the burner B for the stove as the heating means for the stove. However, the present invention provides a halogen lamp, an electric resistance wire as the heating means for the stove. It can be applied to various types of stoves with high-frequency heating devices, such as a sheathed heater with a built-in heater, or an electric heating means such as a magnetic field generating coil that performs electromagnetic induction heating (usually called “IH”) .
In addition to the built-in type exemplified in the above embodiment, the present invention can also be applied to a stationary type stove with a high-frequency heating device.

  As described above, it is possible to provide a stove with a high-frequency heating device that can widen the opening of the heating chamber while appropriately preventing high-frequency leakage.

DESCRIPTION OF SYMBOLS 1 Top plate 2 Main body case 3 Heating chamber 4 Opening part 5 Door 7 Exhaust duct 12 Mounting base 13 Convex part 14 Choke structure (high frequency shielding part)
17 Magnetron 18 High Voltage Transformer 19 High Voltage Capacitor 20 Cooling Fan 21 Waveguide 24 Exhaust Port 25 Slide Rail 26 Fixed Rail 27 Movable Rail 35 High Frequency Attenuation Path 36 Attenuation Path Forming Member 37 Peripheral Surface Forming Member B Stove Burner )
H drawer part G guide means R high frequency heating device

Claims (7)

Inside the main body case provided with a top plate, there are a stove heating unit for heating the cooking container placed on the top plate, and a door for opening and closing the heating chamber and the opening for putting in and out the object to be heated in the heating chamber. And a high-frequency heating device that heats an object to be heated in the heating chamber with a high frequency,
The high-frequency heating device is a stove with a high-frequency heating device provided in a form in which the opening is opened on the front surface of the main body case,
The high-frequency heating device is provided with a drawer portion having a mounting table on which an object to be heated can be placed, a drawer position where the drawer portion is housed in the heating chamber, and a drawer position where the drawer portion is pulled out in front of the heating chamber. And guide means for supporting in a removable state,
The door is provided in the drawer portion so as to close the opening when the drawer portion is located at the storage position;
A protrusion that protrudes into the door at the back side of the heating chamber and enters the heating chamber in a state where the door closes the opening and an outer peripheral surface faces the inner peripheral surface of the heating chamber over the entire circumference. Part is provided,
A stove with a high-frequency heating device in which a high-frequency shielding portion is provided at a portion of the convex portion facing the inner peripheral surface of the heating chamber. The guide rail includes a fixed rail fixed to the heating chamber side, and a slide rail including a movable rail supported by the fixed rail so as to be movable over the storage position and the drawer position and supporting the drawer portion. It consists of
The stove with a high-frequency heating device according to claim 1, wherein a portion of the door on the outer peripheral side of the convex portion is supported by a tip of the movable rail.   Attenuation passage forming member that forms a narrow high-frequency attenuation passage that attenuates high-frequency with the inner peripheral surface of the heating chamber in the moving direction of the drawer portion with respect to the high-frequency shielding portion and close to the inner side of the heating chamber. The stove with a high-frequency heating device according to claim 1 or 2, wherein The outer peripheral surface forming member that forms the outer peripheral surface of the convex portion is configured to extend to the back side of the heating chamber in the moving direction of the drawer portion than the high frequency shielding portion,
The stove with a high-frequency heating device according to claim 3, wherein the attenuation passage forming member is configured by a portion on the back side of the heating chamber in the moving direction of the drawing portion with respect to the high-frequency shielding portion in the outer peripheral surface forming member. . The waveguide for propagating the high frequency generated from the magnetron into the heating chamber is configured in a flat shape whose width is narrower than the width in the left-right direction on the upper surface of the heating chamber,
The flat waveguide is provided at the center in the left-right direction on the upper surface of the heating chamber in a posture in which the thickness direction is directed in the up-down direction,
Exhaust ports for exhausting air from the inside of the heating chamber are provided on both the left and right sides of the waveguide on the upper surface of the heating chamber,
The exhaust duct for guiding the exhaust from the exhaust port is provided in the main body case in such a form that an opening on the downstream side opens in a portion on the rear side of the top plate. A stove with a high-frequency heating device according to Item.   A plurality of electrical components including the magnetron, a high-voltage transformer and a high-voltage capacitor that drive the magnetron, and a cooling fan that cools the plurality of electrical components are provided in a portion on the rear side of the heating chamber in the main body case. The stove with a high-frequency heating device according to claim 5, which is provided.   The stove with a high-frequency heating device according to claim 6, wherein the exhaust duct is configured to discharge cooling air that is ventilated by the cooling fan.

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