JP4998141B2 - Induction heating cooker - Google Patents

Description

  The present invention relates to an induction heating cooker including a grill for cooking food to be cooked such as fish in a heating cabinet.

  Conventionally, this type of induction heating cooker has a first packing made of an elastic body on the grill door facing the upper and both sides around the grill heating chamber, and a second packing made of an elastic body on the end surface of the lower end of the grill heating chamber. The grill door is formed with a plurality of slits at the end surface of the lower end portion of the grill heating chamber, air is blown out from the plurality of slits toward the grill door, and blown to the opening formed in the back cover of the grill door, And the pressure between the back cover is increased.

  Moreover, the glass plate which forms a grill door is pinched with the door cover and handle of a grill door back surface (for example, refer patent document 1).

  5, FIG. 6 and FIG. 7 show a conventional induction heating cooker described in Patent Document 1. As shown in FIG.

  FIG. 5 is an exploded perspective view of a conventional induction heating cooker, and FIGS. 6 and 7 are enlarged views of main parts.

  As shown in FIGS. 6 and 7, a plurality of slits 3 are provided in the lower part of the front panel 2 of the heating chamber 1, and a packing 4 is attached to the lower side thereof. The glass plate 6 forming the grill door 5 is sandwiched between a door cover 7 and a handle 8 that cover the rear surface of the grill door 5, and a predetermined space is formed between the glass plate 6 and the door cover 7.

  The door cover 7 is formed with a first opening 9 for inserting the first door support fitting at the center of the lower end and a second opening 10 for inserting the second door support fitting. The door cover 7 is provided with a packing 11 extending downward from both ends from the upper edge. When the grill door 5 is closed, the packing 4 and the packing 11 are sealed so as to surround the heating chamber 1.

Air leaking from the plurality of slits 3 is blown toward the grill door 5 at the lower part of the front panel 2, and part of the air is blown toward the opening 10 and the opening 9, and between the grill door 5 and the door cover 7. It increases the pressure of the space and prevents the leakage of smoke to the outside.
JP 2006-336897 A

  However, the above-mentioned conventional induction heating cooker is intended to prevent smoke leakage from the grill door to the outside of the container, and no particular consideration is given to reducing the temperature of the grill handle or increasing the strength against impact on the front surface of the main body. . Further, since the glass plate 6 forming the grill door 5 is sandwiched between the door cover 7 and the handle 8 that cover the back surface of the grill door 5, the heat of the glass plate 6 is directly transmitted to the handle 8, and the handle 8 is It tends to get hot.

  Further, the glass plate 6 is exposed on the surface of the grill door 5, and no front surface metal plate or holding frame is formed on the front side of the glass plate 6, and is formed by the door cover 7 and the glass plate 6. It is also unknown how far the door space is constructed.

  The present invention solves the above-mentioned problems not found in the prior art, and makes it difficult for external mechanical impact to be applied to the glass forming the viewing window of the grill door, and the temperature of the grill door surface that may be touched when the grill is used. Is reduced.

  In order to solve the above-mentioned conventional problems, the induction heating cooker of the present invention comprises a front face of the main body on the side of the grill door and the side of the grill door under the top frame, and a cooling fan inside the front cover, The front surface of the grill door is provided with a window portion that covers the handle portion, the surface metal plate, and the extraction window in the metal plate on the front surface, and a non-metallic holding frame that accommodates the window glass is disposed on the back surface of the surface metal plate. The door back plate is arranged between the plate and the window glass and presses and holds the back surface of the window glass toward the holding frame.

  In the induction heating cooker of the present invention, a non-metallic holding frame for housing a window glass is arranged behind the surface metal plate between the surface metal plate and the window glass, and the back surface of the window glass is pressed and held toward the holding frame. By arranging the door back plate, it is possible to make it difficult for external mechanical impact to be applied to the glass forming the viewing window of the grill door, and to reduce the temperature of the grill door surface that may be touched when the grill is used.

  A first invention includes a grill door and a front cover on the front surface of the main body below the top frame, and a cooling fan inside the front cover. A handle portion, a surface metal plate, and a surface metal are provided on the front surface of the grill door. A window glass covering the viewing window in the plate, and on the back side of the surface metal plate, a non-metallic holding frame for storing the window glass is arranged between the surface metal plate and the window glass, and the back side of the window glass A door back plate that presses and holds the back surface of the window glass in the direction of the holding frame, and a handle part and a holding frame that are separated from the holding frame are fixed to the door back plate. The window glass exposed on the surface of the main body is only the viewing window, and the window glass is covered with a surface metal plate, and it is difficult for external impact to be applied to the window glass, and cracks and cracks can be prevented (especially on the outer periphery). And corners). At the same time, since a non-metallic holding frame for storing the window glass is interposed between the window glass and the surface metal plate, the heat of the window glass is not directly transferred to the surface metal plate, and may be touched when using the grill. The temperature of the surface metal plate which is the grill door surface can be reduced. Furthermore, since the handle portion is a separate part from the holding frame for holding the glass, the heat of the glass is not directly conducted, so that the temperature of the handle can be reduced.

  In particular, according to the second invention, in the first invention, a heat insulating space that leads from the handle back to the holding frame back is provided between the handle back and the holding frame back and the door back plate. As a result, a heat insulation layer is formed between the surface of the grill door other than the viewing window and the door back plate, and the heat received by the door back plate, which also serves as the front wall of the grill cabinet, from the inside of the grill cabinet, Conductivity between the handle and the surface metal plate is reduced to reduce the temperature of the grill door surface, and because the handle is separate from the holding frame that holds the glass, the heat of the glass is not directly conducted. In addition, the temperature of the handle can be further reduced.

  In particular, in the second invention, the third invention includes a handle portion, a grill door portion surface side composed of a holding frame for holding the surface metal plate and the window glass, and a door back surface side by the door back plate. Flexibility of door packing that introduces body cooling air outside the grill cabinet from the lower part of the configured door thickness space and arranges it on the door back plate to seal the gap between the front of the grill cabinet and the door back plate By arranging a small hole in the convex space part and blowing out the ventilation in the door thickness internal space into the flexible convex space part, the temperature of the door packing is reduced, and the heat in the grill due to the door packing is reduced. The heat insulation is improved to prevent transmission to the grill door, and the temperature of the grill door is reduced. At the same time, the temperature of the packing is reduced and the thermal deterioration of the door packing is suppressed.

  The fourth invention is the non-metallic holding frame and the surface metal plate, in particular, in any one of the first to third inventions, having an opening serving as a viewing window in the grill cabinet on the center side of the surface metal plate. Insulation of the heat of the window glass by having a large gap on the side of the viewing window in the grill cabinet and the end surface of the surface metal plate facing the window glass forming the viewing window A gap is formed to reduce heat conduction from the holding frame, which also serves as a metal plate, to the surface metal plate, and the window glass is exposed on the surface of the grill door. Reduce the temperature of the surface metal plate that may touch the surface.

  According to a fifth invention, in particular, in any one of the first to fourth inventions, a concave space is provided between the surface metal plate and a nonmetallic holding frame provided on the back side of the surface metal plate. By doing so, the concave space portion becomes a heat insulation layer of the heat conduction path from the holding frame that also serves as heat insulation of the window glass to the surface metal plate, and the temperature of the surface metal plate that may be touched during use of the grill is reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1, 2, 3, and 4 show a perspective view, a partial vertical cross-sectional view, and a main perspective view of an induction heating cooker according to the first embodiment of the present invention.

  1 and 2, the cooker body 21 is installed on a kitchen table 22. The upper surface of the main body 21 is covered by surrounding the top plate 23 made of crystallized glass with a metal top frame 24. On the top plate 23, heating portions 25a and 25b are printed. A ventilation panel 26 that covers the external ventilation holes is disposed at the rear of the main body 21 behind the top plate 24. Heating coils 27a and 27b (not shown) constituting induction heating means are arranged inside the main body corresponding to the heating units 25a and 25b.

  The front surface of the main body 21 at the lower part of the top frame 24 is covered mostly by a grill door 28 and a front cover 29 that covers the front surface of the main body on the side of the grill door 28. A cooling fan 30 (not shown) for cooling the internal components of the main body 21 is provided inside the front cover 29.

  As shown in FIG. 2, the grill door 28 includes a window glass 34 whose front surface covers a handle portion 31, a surface metal plate 32, and a viewing window 33 on the center side in the surface metal plate 32.

  On the back side of the surface metal plate 32, a substantially frame-shaped holding frame 35 formed of a heat-resistant thermosetting resin made of a non-metal that houses the window glass 34 is interposed between the surface metal plate 32 and the window glass 34. Arranged.

  The front surface of the window glass 34 is in close contact with the holding frame 35 and the outer periphery thereof is surrounded by the holding frame 35. A portion corresponding to the viewing window 33 is formed in the rear surface side of the window glass 33 as a hole, and the rear surface of the window glass 34 is used as the holding frame 35. A door back plate 37 that presses in the direction and holds the window glass 34 with the holding frame 35 is disposed and held.

  Further, the handle portion 31 is a separate part which can be separated when the engagement with the engagement hook 38 at the lower part of the holding frame 35 is released. The handle portion 31 and the holding frame 35 are fixed to the door back plate 37 and are mounted on the grill door 28. The whole is configured.

  With this configuration, the portion of the window glass 34 exposed on the front surface side of the main body 21 in the grill door 28 is only the viewing window 33, and the exposed area of the window glass 34 that is in direct contact with the hot air in the grill cabinet 40 and becomes high can be reduced. The periphery of the viewing window 33 portion of the window glass 34 is covered with the surface metal plate 32, and it is difficult for external impact to be applied to the window glass 34, and cracks and breaks of the window glass 34 can be prevented. In particular, the effect is great for ridgelines and corners on the outer periphery of the window glass 34 that are likely to be cracked or chipped.

  At the same time, between the window glass 34 and the surface metal plate 32, there is a holding frame 35 made of a non-metallic heat-resistant thermosetting resin for housing the window glass 34. However, the temperature of the surface metal plate 32 that is the surface of the grill door 28 that may be touched when the grill is used can be reduced. Further, since the holding frame 35 for accommodating the window glass 34 is interposed between the window glass 34 and the surface metal plate 32, the holding frame 35 serves as a protective member even when an impact is applied to the surface metal plate 32, and the window glass 34. It is possible to reduce the impact applied to the glass and make it difficult to break the glass.

  Furthermore, since the handle portion 31 is a separate component from the holding frame 35 that holds the window glass 34, the heat of the glass is difficult to directly conduct the handle portion 31, and the temperature of the handle portion 31 can be reduced.

  2 and 3, the handle portion 31 is formed of a heat-resistant resin, and the back surface is stealed, and in the state where the handle portion 31 is fixed to the door back plate 37 together with the holding frame 35, the handle portion 31 back surface and the holding frame A space from the back surface of the handle 31 to the back surface of the holding frame 35 is formed as a heat insulating space 39 between the back surface of the 35 and the door back plate 37. The heat insulation space 39 is a space connected around the hole 36 of the door back plate 37, and the cross sectional configuration of the grill door 28 is such that the heat insulation space 39 is formed in almost the entire range except the portion of the observation window 33. Yes.

  2 is a longitudinal sectional view of the vicinity of the center portion of the grill door 28 in FIG. FIG. 3 is a longitudinal sectional view of FIG. 1 outside the grill door 28 viewing window 33.

  As described above, the heat insulating space 39 is formed between the surface of most of the grill doors 28 other than the viewing window 33 and the door back plate 37, and the door back plate 37, which also serves as the front wall of the grill cabinet 40, is formed from the inside of the grill cabinet 40. The heat received is reduced by the heat insulation space 39 from being conducted to the handle portion 31 and the surface metal plate 32 on the surface of the grill door 28, thereby reducing the temperature of the surface of the grill door 28. Further, since the handle portion 31 is a separate component from the holding frame 35 that holds the window glass 34, the heat conduction of the window glass 34 can be reduced, and the temperature reduction effect of the handle portion 31 is enhanced.

  2 and 4, the door back plate 37 seals a gap generated between the front surface around the grill box 40 (not shown) and the door back plate 37 which is the back surface of the grill door 28. A small hole 43 is arranged in the flexible convex space 42 of the door packing 41. In FIG. 4, the small holes 43 are shown by breaking the door packing 41.

  Further, it is constituted by a front surface side of the grill door 28 including a handle portion 31, a holding frame 35 that holds the front surface metal plate 32 and the window glass 34, and a rear surface side of the grill door 28 by the door back plate 37. Main body cooling air outside the grill box is introduced into the lower part of the heat insulating space 39, which is the inner space of the door thickness, from an air inlet 44 provided by notching the door back plate 37. The cooling air guided into the heat insulating space 39 is blown out into the flexible convex space 42 of the door packing 41 through the small holes 43 arranged in the door back plate 37.

  As described above, the main body cooling air outside the grille chamber introduced from the air guide port 44 provided by cutting out the door back plate 37 is filled into the flexible convex space 42 of the door packing 41 through the small hole 43, and the door packing is provided. 41 can be cooled from the back side, and the temperature of the door packing 41 can be reduced. Thereby, it becomes a heat insulating material which prevents that the heat | fever in the grill warehouse 40 is transmitted to the grill door 28 by the door packing 41, and leads to the temperature reduction of the grill door 28. At the same time, the temperature of the door packing 41 is reduced and thermal deterioration of the door packing 41 is suppressed.

  Furthermore, the pressure in the flexible convex space 42 on the back side of the door packing 41 increases, making it difficult for water vapor generated by cooking in the grill 40 to enter the flexible convex space 42, and condensation near the door packing 41. Can be reduced.

  Further, the surface metal plate 32 having an opening serving as a viewing window 33 in the grill box on the center side is attached to the holding frame 35 made of a non-metallic heat-resistant thermosetting resin. 2 is not in close contact with the holding frame 35, but has a gap a in FIG. Is shaped in the direction of the window glass 34 so as to be applied to the window glass 34 forming the viewing window 33.

  As described above, the end face 45 of the surface metal plate 32 is applied to the window glass 34 forming the view window 33, so that the heat from the window glass 34 is also transmitted to the surface metal plate 32. The formation of the gap a for further reducing the heat conduction to the metal plate 32 can be ensured. Thereby, the heat insulation effect with respect to the window glass 34 on the surface of the grill door 28 is enhanced, and the temperature of the surface metal plate 32 of the grill door 28 that may be touched during cooking in the grill cabinet 40 is reduced.

  Further, since there is a gap a inside the surface metal plate 32, the holding window 35 does not push up the sight glass side of the surface metal plate 32, and a gap between the sight glass side end surface 45 of the surface metal plate 32 and the window glass 34 is unlikely to occur. A good looking grill door 28 can be obtained.

  Further, the plane portion of the holding frame 35 is stealed between the surface metal plate 32 and the holding frame 35 made of a non-metallic heat-resistant thermosetting resin provided on the back side of the surface metal plate 32. A concave space 46 is provided as described above.

  As described above, the recessed space 46 becomes a heat insulating layer of the heat conduction path from the holding frame 35 to the surface metal plate 32 that also serves as heat insulation of conduction of the heat of the window glass 34 to the surface metal plate 32, and is touched while the grill 40 is in use. The temperature of the surface metal plate 32 of the grill door 28 which has a fear is reduced. In addition, the concave space portion 46 is not provided with the entire surface of the holding frame 35 as a concave portion, but is provided so as to steal the flat portion of the holding frame 35, so that the surface metal plate 32 is partially attached to the back surface. It is possible to maintain the deformation resistance against impact on the surface metal plate 32.

  As described above, the induction heating cooker according to the present invention holds the non-metallic holding frame for storing the window glass behind the surface metal plate between the surface metal plate and the window glass, and holds the back surface of the window glass. By arranging a door back plate that presses and holds in the direction of the frame, external mechanical impact is less likely to be applied to the glass that forms the viewing window of the grill door, and the temperature of the grill door surface that may be touched when using the grill is reduced. Therefore, the present invention can also be applied to uses such as a cooking device having a door.

The perspective view of the induction heating cooking appliance in Embodiment 1 of this invention The partial longitudinal cross-sectional view of the induction heating cooking appliance in Embodiment 1 of this invention The partial longitudinal cross-sectional view of the induction heating cooking appliance in Embodiment 1 of this invention The principal part perspective view of the induction heating cooking appliance in Embodiment 1 of this invention An exploded perspective view of an induction heating cooker in a conventional example Perspective view of main part of induction heating cooker in the conventional example. Perspective view of main part of induction heating cooker in the conventional example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 21 Main body 23 Top plate 24 Top frame 28 Grill door 29 Front cover 30 Cooling fan 31 Handle part 32 Surface metal plate 33 Viewing window 34 Window glass 35 Holding frame 37 Door back plate 39 Thermal insulation space 41 Door packing 42 Flexible convex space 43 Small hole 46 concave space

Claims (5)

A metal top frame surrounding a top plate on the upper surface of the main body, a grill door on the front surface of the main body below the top frame, a front cover that covers the front surface of the main body on the side of the grill door, and cooling the inner side of the front cover A fan, and the front surface of the grill door includes a handle portion, a surface metal plate, and a window glass that covers a viewing window in the surface metal plate. A non-metallic holding frame for housing the door is disposed between the surface metal plate and the window glass, and a door back plate for pressing and holding the rear surface of the window glass toward the holding frame is disposed on the rear surface side of the window glass. An induction heating cooker in which the handle portion and the holding frame, which are separate parts separable from the holding frame, are fixed to the door back plate. The induction heating cooker according to claim 1, wherein a heat insulating space is provided between the handle part back surface and the holding frame back surface and the door back plate so as to communicate from the handle part back surface to the holding frame back surface. From the lower part of the door thickness internal space, which is composed of a handle door, a front surface side of the grill door composed of a holding frame for holding the surface metal plate and the window glass, and a rear surface side of the door portion by the door back plate, Introducing an outer body cooling air, disposing a small hole in the flexible convex space portion of the door packing that is arranged on the door back plate and seals the gap between the front surface surrounding the grill cabinet and the door back plate, The induction heating cooker according to claim 2, wherein the ventilation in the door thickness space is blown into the flexible convex space. There is an opening that serves as a viewing window in the grill cabinet on the center side of the surface metal plate, and there is a gap between the nonmetallic holding frame and the surface metal plate that makes the viewing window side in the grill cabinet larger. The induction heating cooker according to any one of claims 1 to 3, wherein an end surface on the side of the viewing window of the surface metal plate is applied to a window glass forming the viewing window. The induction heating cooker according to any one of claims 1 to 4, wherein a concave space is provided between the surface metal plate and a nonmetallic holding frame provided on the back side of the surface metal plate.

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