JP5214512B2 - Cooker - Google Patents

Description

  The present invention relates to a cooking device.

  Conventionally, as a cooking device, there is a heating cooker having an opening on the front side, an open / close door that opens and closes the opening, and a seal member that prevents water vapor from leaking from the opening ( JP, 2007-071464, A (patent documents 1) reference).

  The sealing member is provided on the rear surface of the opening / closing door, and is in close contact with the peripheral portion of the opening of the heating chamber (hereinafter referred to as “opening peripheral portion”) when the opening / closing door is closed. Further, the surface of the sealing member that faces the peripheral edge of the opening is a curved surface that swells toward the peripheral edge of the opening.

  By the way, in the said conventional cooking device, the clearance between a casing and an opening-and-closing door may vary by manufacturing errors. In this case, since the amount of deflection of the seal member when the door is closed changes, the contact position of the seal member with respect to the peripheral edge of the opening changes.

  As a result, since the contact area of the seal member with respect to the peripheral edge of the opening changes, there is a problem that the contact pressure of the seal member varies and the seal effect of the seal member varies.

JP 2007-071464 A (FIG. 2)

  Then, the subject of this invention is providing the heating cooker which can reduce the dispersion | variation in the sealing effect of a sealing member.

In order to solve the above problems, the heating cooker of the present invention is
A casing,
A steam generator provided in the casing for generating steam;
To be cooked in order to heat using the steam generated in the steam generator, a heating chamber having an opening on the front side,
A pivotable door that opens and closes the opening of the heating chamber;
A seal member for sealing between the front surface of the casing and the rear surface of the open / close door;
The seal member has an arm portion facing the front surface of the casing,
On the casing side of the arm portion, a protrusion protruding to the front side of the casing is provided,
Cross-sectional shape of the front end face of the protruding portion Ri substantially arc shape der, and the cross-sectional shape of the arm part is characterized by a substantially U-shaped or substantially V-shaped der Rukoto.

  According to the cooking device of the above configuration, even if the clearance between the front surface of the casing and the rear surface of the open / close door changes due to a manufacturing error, for example, the cross-sectional shape of the tip surface of the protrusion is a substantially arc shape, The contact area of the protrusion with the front surface of the casing can be kept constant.

  Therefore, the contact pressure of the sealing member does not vary, and variations in the sealing effect of the sealing member can be reduced.

Moreover , since the cross-sectional shape of the said arm part is a substantially U shape or a substantially V shape, the deflection of an arm part is large.

  Accordingly, since the elastic constant of the arm portion is increased, the projecting portion is strongly pressed against the front surface of the casing by the arm portion, and the sealing effect of the seal member can be enhanced.

In the heating cooker of one embodiment,
The distal end portion of the arm portion is located on the inner side of the protruding portion and is bent toward the open / close door side.

  According to the heating cooker of the above embodiment, the tip of the arm portion is located on the inner side of the protrusion and is bent toward the open / close door, so that steam from the heating chamber is held in the arm portion. be able to.

Therefore, the protrusion can be strongly pressed against the front surface of the casing by the pressure of the steam in the arm portion, and the sealing effect of the seal member can be enhanced.
In the heating cooker of one embodiment,
The seal member has a base fixed to the open / close door.

  According to the heating cooker of the present invention, even if the clearance between the front surface of the casing and the rear surface of the open / close door changes due to a manufacturing error, for example, the cross-sectional shape of the front end surface of the protrusion is a substantially arc shape, Since the contact area of the protrusion with respect to the front surface of the casing can be kept constant, the contact pressure of the seal member does not vary, and variations in the sealing effect of the seal member can be reduced.

FIG. 1 is a schematic perspective view of a heating cooker according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the cooking device. Drawing 3 is a mimetic diagram which looked at the opening-and-closing door of the above-mentioned cooking-by-heating machine from the back side. 4 is a schematic cross-sectional view taken along line IV-IV in FIG. FIG. 5 is an enlarged view of a portion in the circle of FIG. FIG. 6 is a schematic sectional view of the packing and its peripheral part. FIG. 7 is a schematic sectional view of a modified example of the packing. FIG. 8 is a schematic cross-sectional view of a modified example of the protrusion. FIG. 9 is a schematic sectional view of a modified example of the packing.

  Hereinafter, the heating cooker of this invention is demonstrated in detail by embodiment of illustration.

  FIG. 1 is a schematic view of a heating cooker according to an embodiment of the present invention when the open / close door 103 is opened, as viewed from the front side.

  The cooking device includes a rectangular parallelepiped casing 101, a heating chamber 102 provided in the casing 101, and an opening / closing door 103 rotatably attached to the front surface of the casing 101.

  An operation panel 105 is provided on the right side of the front surface of the casing 101. The operation panel 105 includes a liquid crystal display unit 106, a knob 107, and a plurality of buttons 108. A tank mounting opening 105a is provided below the knob 107, and the front surface of the water supply tank 113 is exposed from the tank mounting opening 105a.

  The water supply tank 113 can be attached to and detached from the casing 101, and can be attached to or removed from the casing 101 from the front side of the casing 101.

  The heating chamber 102 has an opening 102a on the front side for taking in and out the food 109 (see FIG. 3) and the like. In addition, a light introduction opening 102b is provided at the front upper portion of the right side wall of the heating chamber 102, and the lamp 104 faces the light introduction opening 102b from the outside of the heating chamber 102.

  The opening / closing door 103 rotates around the lower end portion and opens / closes the opening portion 102a of the heating chamber 102. A handle 110 is attached to the top of the open / close door 103. Further, a heat-resistant glass 111 is disposed at a substantially central portion of the open / close door 103, and the user can visually recognize the state in the heating chamber 102 through the heat-resistant glass 111. In addition, a heat-resistant resin packing 112 is provided on the rear surface of the open / close door 103 so as to surround the heat-resistant glass 111. The packing 112 is disposed so as to be in contact with the peripheral edge of the opening 102 a of the heating chamber 102 when the open / close door 103 is closed. The packing 112 is an example of a seal member.

  FIG. 2 is a schematic cross-sectional view of the cooking device. 114 is a soot receiver, 115 is a water level sensor, 116 is a water supply pump, 117 is a water supply pipe, 118 is an upper heater, and 119. Is an upper heater cover, 120 is a tray, 121 is a lower heater, 122 is a heat shield, 123 is an exhaust port, 124 is an exhaust port cover, and 125 is an exhaust thermosensor. , 126 is an exhaust duct, 126a is an opening for introducing cold air, 127 is a cold air path, 128 is a dilution exhaust port, and 129 is a steam generating portion. Although not shown, a magnetron for generating microwaves is also installed in the casing. The steam generator 129 is an example of a steam generator.

  The water supply pump 116 sucks water in the water supply tank 113 and sends the water to the steam generation unit 129 through the water supply pipe 117. The steam generation unit 129 may heat the water from the feed water pump 116 to supply steam into the heating chamber 102, or may superheat the steam to supply superheated steam to the heating chamber 102. it can. Here, the said superheated steam means the steam heated to the overheated state of 100 degreeC or more.

  The to-be-cooked item 109 can be heated with water vapor or superheated steam from the steam generation unit 129, and can also be heated with radiant heat from the upper heater 118 and the lower heater 121. In addition, there is a top wall of the heating chamber 102 below the upper heater 118, and a bottom wall of the heating chamber 102 is above the lower heater 121, and the upper heater 118 and the lower heater 121 are not exposed in the heating chamber 102. .

  FIG. 3 is a schematic view of the door 103 as viewed from the heating chamber 102 side. FIG. 4 is a schematic cross-sectional view taken along line IV-IV in FIG. FIG. 5 is an enlarged view of a portion surrounded by a circle in FIG. In FIG. 5, illustrations of portions other than the cross section of the packing 112 are omitted for easy viewing.

  The open / close door 103 includes a heat-resistant resin door main body 130 as an outer frame, a metal inner frame 131 attached to the door main body 130, and a heat-resistant resin cover that covers the outer peripheral edge of the inner frame 131. Member 132.

  A heat resistant glass 111 is attached to the inner peripheral edge of the inner frame 131. On the other hand, a choke structure 133 that prevents high-frequency leakage is provided on the outer peripheral edge of the inner frame 131. The choke structure 133 includes a plurality of comb teeth 134 provided at predetermined intervals along the outer peripheral edge of the inner frame 131. The comb teeth 134 are inclined with respect to the rear surface of the door 103 as shown in FIG. The inner frame 131 is provided with an internal raised wall 135 so as to be positioned in the vicinity of the comb teeth 134.

  A packing 112 is attached to the inner peripheral edge of the cover member 132. When the cover member 132 is attached to the door main body 130, the packing 112 enters the clearance between the inner raised wall 135 and the comb teeth 134 together with the inner peripheral edge of the cover member 132.

  As shown in FIG. 5, the packing 112 includes a base portion 136, an arm portion 137 having a substantially V-shaped cross section that faces the front surface of the casing 101, and a protruding portion 138 that protrudes toward the front surface side of the casing 101. Yes.

  The base 136 is fixed to the inner peripheral edge of the cover member 132 and covers the entire inner peripheral edge. A lip portion 139 having a substantially triangular cross section is provided on the end surface of the base portion 136 on the inner raised wall 135 side over the entire circumference. The lip 139 is in close contact with the internal raised wall 135 to prevent water vapor or the like in the heating chamber 102 from entering between the internal raised wall 135 and the comb teeth 134.

  The arm portion 137 is integrally provided on the rear end surface (end surface on the heating chamber 102 side) of the base portion 136 over the entire circumference. Further, the distal end portion of the arm portion 137 is located on the inner side of the protruding portion 138 and is bent toward the inner frame 131 side of the door 103.

  The projecting portion 138 is integrally provided on the casing 101 side of the arm portion 137 over the entire circumference. The cross-sectional shape of the tip surface of the projection 138 is substantially arc-shaped, and the radius of curvature of the tip surface of the projection 138 is set to 0.5 mm, for example.

According to the heating cooker having the above structure, when opening the door 103, the arm portions 13 7 Contact and projections 138 of the packing 112 is a shape shown by a two-dot chain line in FIG. 5, the door 103 When closed, the shape is as shown by the solid line in FIG. When the open / close door 103 is closed, the front end surface of the protrusion 138 contacts the front surface of the casing 101.

  Further, even when the clearance between the front surface of the casing 101 and the rear surface of the open / close door 103 is 1 mm wider as shown in FIG. 6 than in the case of FIG. The tip end surface of the protrusion 138 contacts the front surface of the casing 101.

  Thus, even if the clearance between the front surface of the casing 101 and the rear surface of the open / close door 103 changes, the front end surface of the projection 138 contacts the front surface of the casing 101, and the cross-sectional shape of the front end surface of the projection 138 Therefore, the contact area of the protrusion 138 with the front surface of the casing 101 can be kept constant.

  Therefore, the contact pressure of the packing 112 does not vary, and variations in the sealing effect of the packing 112 can be reduced.

  Further, since the cross-sectional shape of the arm part 137 is substantially V-shaped, the deflection of the arm part 137 is increased.

  Therefore, since the elastic constant of the arm portion 137 is increased, the projecting portion 138 can be strongly pressed against the front surface of the casing 101 by the arm portion 137, and the sealing effect of the packing 112 can be enhanced.

  In addition, since the deflection of the arm portion 137 is large, even if the clearance between the front surface of the casing 101 and the rear surface of the open / close door 103 changes greatly, the contact area of the protrusion 138 with respect to the front surface of the casing 101 is kept constant. be able to.

  Further, the tip of the arm portion 137 is located on the inner side of the protrusion 138 and is bent toward the open / close door 103 side, so that steam from the heating chamber 102 can be held in the arm portion 137. .

  Therefore, the projecting portion 138 is strongly pressed against the front surface of the casing 101 by the pressure of the steam in the arm portion 137, and the sealing effect of the packing 112 can be further enhanced.

  In the above embodiment, the packing 112 has the arm portion 137 having a substantially V-shaped cross section. However, the packing 112 may have an arm portion having a substantially U-shaped cross section. The arm portion 237 may be provided.

  Further, in the above-described embodiment or the above-described modification example, a protrusion 238 illustrated in FIG. 8 may be used instead of the protrusion 138. The projecting portion 238 includes a tip portion 240 having a substantially circular cross section and a connecting portion 241 having a substantially rectangular cross section. The connecting portion 241 connects the distal end portion 240 and the arm portions 137 and 237.

  Further, as shown in FIG. 9, the tip of the arm portion 337 and the inner end of the protrusion 138 may be aligned. That is, in the above-described embodiment or the above-described modification, a portion inside the protrusion 138 at the distal end portion of the arm portions 137 and 237 may be eliminated.

  Further, in the arm portions 137, 237, and 337, as long as the portion faces the front surface of the casing 101, the protruding portions 138 and 238 may be provided on the portions.

  7 to 9, as in FIG. 5, the illustration of portions other than the cross section is omitted for easy viewing.

  In the above-described embodiment, the opening 102a of the heating chamber 102 is opened and closed by the pivotable opening / closing door 103. For example, the opening 102a of the heating chamber 102 is opened and closed by sliding in the front-rear direction with respect to the casing 101. You may make it open and close. That is, the opening / closing door included in the cooking device of the present invention may be a rotary type or a sliding type.

  The present invention can be applied not only to an oven range using superheated steam but also to an oven using superheated steam.

  In the cooking device of the present invention, healthy cooking is performed by using superheated steam or saturated steam in cooking heaters (including those using an electric stove or gas stove such as an IH heater or electric heater) or a microwave oven. Can do. For example, in the cooking device of the present invention, superheated steam or saturated steam having a temperature of 100 ° C. or higher is supplied to the food surface, and the superheated steam or saturated steam adhered to the food surface is condensed to give a large amount of condensation latent heat to the food. So it can efficiently transfer heat to food. Moreover, when condensed water adheres to the food surface and salt and oil are dropped together with condensed water, salt and oil in the food can be reduced. Further, the inside of the heating chamber is filled with superheated steam or saturated steam, and becomes anoxic state, thereby enabling cooking while suppressing oxidation of food.

DESCRIPTION OF SYMBOLS 101 Casing 102 Heating chamber 102a Opening part 103 Opening / closing door 112 Packing 137,237,337 Arm part 138,238 Projection part

Claims (3)

A casing,
A steam generator provided in the casing for generating steam;
To be cooked in order to heat using the steam generated in the steam generator, a heating chamber having an opening on the front side,
A pivotable door that opens and closes the opening of the heating chamber;
A seal member for sealing between the front surface of the casing and the rear surface of the open / close door;
The seal member has an arm portion facing the front surface of the casing,
On the casing side of the arm portion, a protrusion protruding to the front side of the casing is provided,
Cross-sectional shape of the front end face of the protruding portion Ri substantially arc shape der and cooking device cross-sectional shape of the arm portion is substantially U-shaped or substantially V-shaped der wherein Rukoto. The heating cooker according to claim 1, wherein
The cooking device according to claim 1, wherein a tip end portion of the arm portion is located on an inner side than the projection portion and is bent toward the opening / closing door side. The heating cooker according to claim 1 or 2,
The cooking device according to claim 1, wherein the sealing member has a base fixed to the open / close door.

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