WO2012029310A1 - Heating device - Google Patents

Heating device Download PDF

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Publication number
WO2012029310A1
WO2012029310A1 PCT/JP2011/004877 JP2011004877W WO2012029310A1 WO 2012029310 A1 WO2012029310 A1 WO 2012029310A1 JP 2011004877 W JP2011004877 W JP 2011004877W WO 2012029310 A1 WO2012029310 A1 WO 2012029310A1
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WO
WIPO (PCT)
Prior art keywords
heating
rear wall
heating chamber
fan case
blower fan
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PCT/JP2011/004877
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French (fr)
Japanese (ja)
Inventor
圭二 原田
孝彦 山崎
朗見 西
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パナソニック株式会社
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Publication of WO2012029310A1 publication Critical patent/WO2012029310A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
    • F24C15/325—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation electrically-heated

Definitions

  • the present invention relates to a heating apparatus for cooking an object to be heated using convection heating in which hot air is generated by a blower fan and a heater.
  • this type of heating device is generally provided with a fan device behind the heating chamber where the object to be heated is cooked.
  • the heating device sucks the air in the heating chamber from the suction port provided in the rear wall of the heating chamber into the casing of the hot air circulation device (heat source chamber), and provides the hot air heated by the heater on the rear wall of the heating chamber. It has a structure that blows out from the blown outlet.
  • a heating apparatus cooks by the convection heating using the circulation of this hot air.
  • Such a heating device uniformly supplies the hot air into the heating chamber using a wind direction plate provided in the casing, thereby achieving a uniform temperature distribution in the cabinet.
  • the heating apparatus is improving the baking performance (for example, refer patent document 1).
  • a member for changing the direction of the hot air is provided in the vicinity of the air outlet so that the hot air spreads uniformly in the heating chamber (for example, see Patent Document 2). .
  • FIG. 9 (a) is a side sectional view of a conventional heating device described in Patent Document 1
  • FIG. 9 (b) is a front view of the heating chamber rear wall of the heating device.
  • the heating device includes a centrifugal chamber in a fan chamber composed of a rear wall of the heating chamber 1 and a fan case 2 provided on the outer surface of the rear wall.
  • a blower fan 3 composed of a fan and a substantially annular heater 4 are provided.
  • a suction port 5 made up of a number of punching holes is formed in the center of the rear wall of the heating chamber 1, and a plurality of punching holes 6 made up of a number of punching holes are formed in strips at positions above and below the suction port 5, respectively. Has been.
  • the blower fan 3 is a centrifugal fan provided in the fan chamber formed by the rear wall of the heating chamber 1 and the fan case 2 so as to face the suction port 5.
  • the blower fan 3 is rotationally driven by a motor 7 provided outside the fan case 2.
  • the heater 4 is a substantially annular sheathed heater (sheath-heater) provided on the outer periphery (outlet side) of the blower fan 3.
  • a wind direction plate 8 extending to the vicinity of the air outlet 6 is provided inside the fan case 2 facing the air outlet 6 on the radially outer side of the blower fan 3.
  • the blower fan 3 is rotated by the motor 7, and the air in the heating chamber 1 is fed into the fan case 2 from the suction port 5. And is sent out radially outward of the blower fan 3.
  • the sent-out air is heated by the heater 4 and returned to the heating chamber 1 from the air outlet 6. In this way, hot air circulates in the heating chamber 1 and the fan case 2 to perform convection heating.
  • Japanese Patent Publication No.7-111256 Japanese Unexamined Patent Publication No. 2006-71124 Japanese Unexamined Patent Publication No. 2006-71125 Japanese Unexamined Patent Publication No. 2004-93092 Japanese Unexamined Patent Publication No. 63-14016
  • the opening shape of the fan case 2 is generally a quadrangle, and the corner portions of the four corners are portions that have a great influence on heating unevenness.
  • the hot air tends to be blown out toward the rotation direction side of the blower fan 3. Moreover, the corners at the four corners in the fan case 2 tend to stagnate hot air.
  • the present invention solves the above-described conventional problems, and provides heating that eliminates heating unevenness by providing inclined flat walls at the corners of the four corners in the fan case and uniformizing the flow of hot air to the heating chamber.
  • An object is to provide an apparatus.
  • a heating device of the present invention includes a heating chamber in which an object to be heated is placed, left and right side walls, a top wall, a bottom wall, and a rear wall that constitute a wall surface of the heating chamber.
  • a heating device for supplying hot air from the outlet to the heating chamber by the blower fan and the heating means, wherein the fan case shape viewed from the heating chamber side is a polygon having four or more vertices
  • the planar walls provided at the corners on the diagonal line are arranged symmetrically with respect to the center of the fan case.
  • the heating device of the present invention can eliminate uneven heating by providing flat walls at the corners of the four corners of the fan case and making the flow of hot air uniform.
  • the volume of the fan case shape (heat source chamber shape) is reduced, and the heating efficiency can be improved.
  • a heating device is formed on a heating chamber for placing an object to be heated, left and right side walls constituting the wall surface of the heating chamber, a top wall, a bottom wall, a rear wall, and the rear wall. And a blower fan provided outside the heating chamber on the rear wall, and a fan case that covers the blower fan and the heating means with the rear wall.
  • the heating device supplies hot air from the air outlet to the heating chamber by the blower fan and the heating means.
  • the shape of the fan case viewed from the heating chamber side is a polygon having four or more vertices, and the flat walls provided at the corners on the diagonal line are mutually pointed with respect to the center of the fan case. Arranged symmetrically. With this configuration, it is possible to eliminate heating unevenness by making the flow of hot air uniform.
  • the fan case shape is an octagon formed by an overlapping portion of one rectangular shape and another rectangular shape rotated by a predetermined angle.
  • the fan case shape is a polygon formed by overlapping one rectangular shape, another rectangular shape rotated by a predetermined angle, and a rectangular shape further rotated by a predetermined angle.
  • FIG. 1 is a side cross-sectional view of a heating device according to an embodiment of the present invention.
  • FIG. 2 is a front view of the fan case alone.
  • FIG. 3 is a front view of the fan case with a blower fan, a heater, and a partition plate attached thereto.
  • FIG. 4 is a perspective view of the fan case shown in FIG.
  • FIG. 5 is a front view of the rear wall as viewed from the heating chamber side.
  • FIG. 6 is an exploded perspective view of the rear wall and the fan case.
  • FIG. 7 is an exploded perspective view of the rear wall and the fan case.
  • FIG. 8 is a front view seen through the rear wall in a state where the rear wall and the fan case are assembled.
  • FIG. 9A is a side sectional view of a conventional heating apparatus
  • FIG. 9B is a front view of the rear wall of the heating chamber of the apparatus.
  • the main body 11 of the heating apparatus is provided with a heating chamber 13 that accommodates an object to be heated 12 and performs cooking.
  • a door 14 into which the article to be heated 12 can be taken in and out is provided so as to be freely opened and closed.
  • the heating chamber 13 has a left side wall 15, a right side wall 16, a bottom wall 17, a top wall 18, and a rear wall 19.
  • the left side wall 15 and the right side wall 16 are provided with three support portions 20 extending in the vertical direction so as to protrude into the heating chamber 13 substantially in parallel with the bottom wall 17, and hold the cooking dish 21 having the width of the heating chamber 13. It is configured to be possible.
  • the right side wall 16 is shown in FIG. 1, the right side wall 16 is actually behind the viewpoint and is not visible in FIG.
  • a fan case 22 is attached to the rear surface of the rear wall 19 of the heating chamber 13.
  • a heat source chamber 23 formed by the rear wall 19 and the fan case 22 is disposed on the rear surface of the rear wall 19 of the heating chamber 13. That is, the rear wall 19 of the heating chamber 13 serves as a partition that separates the heating chamber 13 and the heat source chamber 23.
  • a heater 24 that functions as a heating unit and a blower fan 25 that is a centrifugal fan are provided in the heat source chamber 23, a heater 24 that functions as a heating unit and a blower fan 25 that is a centrifugal fan are provided.
  • the heater 24 and the blower fan 25 are controlled by a control unit (not shown).
  • the height direction of the heat source chamber 23 coincides with the height direction of the heating chamber 13 (for example, the distance between the top wall 18 and the bottom wall 17).
  • the width direction of the heat source chamber 23 matches the width direction of the heating chamber 13 (for example, the distance between the left side wall 15 and the right side wall 16).
  • the dimension in the width direction of the heat source chamber 23 is larger than the dimension in the height direction of the heat source chamber 23 (see, for example, FIG. 5).
  • a suction port 26 made up of a number of punching holes is formed in the center of the rear wall 19.
  • upper and lower outlets 27 and 28 made up of a number of punching holes are formed in strips in the left-right direction at positions above and below the suction port 26.
  • a left air outlet 29 and a right air outlet 30 each having a number of punching holes are provided.
  • the heat source chamber 23 communicates with the heating chamber 13 through the suction port 26, the upper outlet 27, the lower outlet 28, the left outlet 29, and the right outlet 30.
  • the punching holes forming the suction port 26, the upper outlet 27, the lower outlet 28, the left outlet 29, and the right outlet 30 have a diameter of 2 so that electromagnetic waves do not leak out of the heating chamber 13 during electromagnetic heating. It is formed as a collection of a plurality of holes of about 5 mm.
  • the fan case 22 is formed by drawing into a substantially rectangular parallelepiped shape with one surface open, and is recessed with respect to the rear wall 19 (protruded rearward) and formed around the concave portion 32A to contact the rear wall 19. And the flange portion 32B arranged in parallel.
  • the fan case 22 has the blower fan 25 disposed substantially in the center of the recess 32A.
  • the fan case 22 is attached to the rear wall 19 so that the concave portion 32 ⁇ / b> A of the fan case 22 covers the inlet 26 and the upper outlet 27, the lower outlet 28, the left outlet 29, and the right outlet 30.
  • the rectangular corner portions 33, 34, 35, and 36 at the corners are substantially rectangular. The shape of this corner cut will be described.
  • a rectangle representing the opening of the recess 32A of the rear wall 19 on a vertical surface orthogonal to the rotation axis of the blower fan 25 is assumed.
  • a rectangular shape that is coaxial with the rectangle, the rectangular frame, the square, and the square are rotated in a predetermined angle around the rotation axis of the blower fan 25 from a parallel state.
  • the shape formed only by the part which both overlaps is the opening part shape of the recessed part 32A of the fan case 22 (refer FIG. 2).
  • the corners 33, 34, 35, and 36 at the four corners of the basic rectangle are changed to diagonal straight lines when viewed from the front, and the shape of the opening of the recess 32A of the fan case 22 is It is octagonal.
  • the left and right corner portions 33 and 36 and the corner portions 34 and 35 adjacent to each other are asymmetrical to each other.
  • the corner portions 33, 35 and the corner portions 34, 36 are provided so as to be symmetrical with respect to the rotation axis of the blower fan 25 and have an acute angle with respect to the wind from the blower fan when rotated by 180 °. ing.
  • the blower fan 25 in the heat source chamber 23 is provided in the heat source chamber 23 so as to face the suction port 26.
  • a substantially annular heater 24 is provided on the outer periphery (outlet side) of the blower fan 25.
  • the blower fan 25 is rotationally driven by a motor 31 provided outside the heat source chamber 23 to generate an air flow. The air flow is heated by the heater 24 to become hot air, and is sent into the heating chamber 13 through the upper air outlet 27, the lower air outlet 28, the left air outlet 29, and the right air outlet 30 to convectively heat the article 12 to be heated. .
  • a left tangential partition plate 41 and a right tangential partition plate 42 having the same shape are disposed on the left and right sides of the heater 24 when viewed from the heating chamber 13 side, in a substantially point-symmetrical positional relationship with respect to the heater 24.
  • the left tangential partition plate 41 and the right tangential partition plate 42 are formed by bending a part of the partition plate bases 43 and 44 in the direction of the fan case 22, respectively.
  • These partition plate bases 43 and 44 are formed of a metal plate formed in a substantially square shape having elasticity in plan view, and are attached to the fan case 22 at an angle of 45 degrees inward and inclined. Yes.
  • the partition plate bases 43 and 44 are fixed to the fan case 22 by caulking or welding.
  • a left radial partition plate 45 and a right radial partition plate 46 are respectively provided at positions adjacent to the left tangential partition plate 41 and the right tangential partition plate 42 and in the radial direction of the rotation trajectory of the blower fan 25. ing.
  • the left tangential partition plate 41 and the left radial partition plate 45, and the right tangential partition plate 42 and the right radial partition plate 46 are arranged in an L shape at substantially 90 degrees.
  • the cooking pan 21 on which the article to be heated 12 such as a cookie is placed is locked by the support portions 20 provided on the left and right wall surfaces of the heating chamber 13 and pushed in until it contacts the rear wall 19. . Then, when the door 14 is closed and a predetermined button on an operation unit (not shown) provided on the front surface of the main body 11 is operated, oven cooking is started.
  • the heating time and heating temperature of the object to be heated 12 can be set by this operation unit, and the control unit composed of a microcomputer controls the heater 24, the motor 31 and the like based on an instruction input from the operation unit.
  • hot air upward is blown out from the upper outlet 27, and hot air downward is blown out from the lower outlet 28 into the heating chamber 13. Since these hot air has a spiral outward wind direction along the rotation direction of the blower fan 25, the hot air from the upper outlet 27 is applied to the top wall 18 or the right side wall 16 and hot air from the lower outlet 28. Flows toward the bottom wall 17 or the left side wall 15, respectively.
  • the hot air in the left-right direction in the heat source chamber 23 is guided to the left tangential partition plate 41 and the right tangential partition plate 42, bypasses the heat source chamber 23, and temporarily reaches the vicinity of the left and right corners of the heat source chamber 23. Therefore, the wind direction is changed to go to the left outlet 29 and the right outlet 30.
  • the left radial partition plate 45 and the right radial partition plate 46 are provided, the left and right directions in the heat source chamber 23 are compared with the case where the left radial partition plate 45 and the right radial partition plate 46 are not provided. You can collect more hot air.
  • the hot air in the left-right direction is from the corner to the center of the heat source chamber 23
  • the hot air in the left-right direction blown into the heating chamber 13 from the left outlet 29 and the right outlet 30 is Also, it goes toward the center in the heating chamber 13, that is, toward the object to be heated 12.
  • the direction of the hot air in the left-right direction changes the direction of the hot air to the direction of the object to be heated 12 because the left radial partition plate 45 and the right radial partition plate 46 are provided, so the left radial partition plate 45, compared with the case where the right radial direction partition plate 46 is not provided, the direction of the article to be heated 12 is more directed.
  • the hot air blown from the heat source chamber 23 through the left outlet 29 and the right outlet 30 to the heating chamber 13 can be concentrated on the object to be heated 12.
  • the left radial partition plate 45 and the right radial partition plate 46 are provided, compared with the case where the left radial partition plate 45 and the right radial partition plate 46 are not provided, the left air outlet from the heat source chamber 23.
  • the hot air blown out to the heating chamber 13 through the air outlet 29 and the right outlet 30 can be concentrated by the article to be heated 12.
  • the direction of the hot air can be changed to the direction of the article to be heated 12 by the left radial partition plate 45 and the right radial partition plate 46, and hot air can be collected.
  • the direction of the hot air is toward the outside of the heating chamber 13 and only the wall of the heating chamber 13 is heated.
  • the hot air is directed toward the center of the heating chamber 13.
  • the heat source chamber 23 is advantageous in thickness reduction, it is possible to provide a heating device having a small overall depth dimension and high energy saving performance while ensuring the capacity of the heating chamber 13.
  • an annular sheathed heater is used as the heater 24.
  • a radiation fin may be provided on the surface of the sheathed heater, and the same effect is obtained. Is obtained.
  • the rotation axis of the present embodiment is concentric with the rotation axis of the blower fan 25, in order to optimize the shape, the rotation axis is not necessarily concentric with the rotation axis of the blower fan 25. It may be shifted.
  • the long side and the short side of the triangular portion of the corner change in the horizontal direction and the vertical direction, but either may be used as long as the hot air can be optimized.
  • microwave ovens or electric ovens having an oven function by convection heating industrial oven heating devices such as commercial oven heating devices or drying devices, ceramic heating, sintering, or living organisms Applicable to chemical reactions and other uses.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Ovens (AREA)

Abstract

The purpose of the present invention is to eliminate uneven heating of an object to be heated, which is placed within a heating chamber, by making uniform the flow of hot air which is blown into the heating chamber. A heating device comprises: an air blower fan (25) provided outside the heating chamber on the rear wall thereof; and a fan case (22) for covering the air blower fan (25) in cooperation with the rear wall, the heating device supplying hot air into the heating chamber from the outlet by the air blower fan (25) and the heater (24). The fan case (22) has a recess (32A) which is recessed relative to the rear wall and a flange section (32B) which is formed around the recess (32A) and is provided so as to be in contact with and located next to the rear wall. The shape of the recess (32A) as viewed from the heating chamber side is a polygon having four or more vertices. Flat surface walls respectively provided to corners (33, 35) on a diagonal line and flat surface walls respectively provided to corners (34, 36) on a diagonal line are provided so as to be point symmetric about the center of the fan case and to form an acute angle relative to the air flow from the air blower fan.

Description

加熱装置Heating device
　本発明は、送風ファンとヒータとによって熱風を発生させる対流加熱を用いて被加熱物を調理する加熱装置に関するものである。 The present invention relates to a heating apparatus for cooking an object to be heated using convection heating in which hot air is generated by a blower fan and a heater.
　従来、この種の加熱装置は、一般的に、被加熱物が調理される加熱室の背面後方にファン装置を備える。加熱装置は、加熱室内の空気を、加熱室内の後面壁に設けられた吸込口から、熱風循環装置（熱源室）のケーシング内に吸い込み、ヒータで加熱された熱風を加熱室内の後面壁に設けられた吹出口から吹き出す構造を有している。加熱装置はこの熱風の循環を利用した対流加熱によって調理を行うものである。 Conventionally, this type of heating device is generally provided with a fan device behind the heating chamber where the object to be heated is cooked. The heating device sucks the air in the heating chamber from the suction port provided in the rear wall of the heating chamber into the casing of the hot air circulation device (heat source chamber), and provides the hot air heated by the heater on the rear wall of the heating chamber. It has a structure that blows out from the blown outlet. A heating apparatus cooks by the convection heating using the circulation of this hot air.
　このような加熱装置は、ケーシング内に設けられた風向板を用いて熱風を加熱室内に均一に供給し、庫内温度分布の均一化を図る。これにより、加熱装置は焼き上げ性能を向上させている（例えば、特許文献１参照）。さらに、ムラなく加熱調理するために、熱風の風向を変えるための部材が吹出口の近傍に設けられ、熱風が加熱室内で均一に広がるようにしているものがある（例えば、特許文献２参照）。 Such a heating device uniformly supplies the hot air into the heating chamber using a wind direction plate provided in the casing, thereby achieving a uniform temperature distribution in the cabinet. Thereby, the heating apparatus is improving the baking performance (for example, refer patent document 1). Furthermore, in order to cook without unevenness, a member for changing the direction of the hot air is provided in the vicinity of the air outlet so that the hot air spreads uniformly in the heating chamber (for example, see Patent Document 2). .
　図９（ａ）は、特許文献１に記載された従来の加熱装置の側面断面図、図９（ｂ）は、同加熱装置の加熱室後壁の正面図を示すものである。図９（ａ）、（ｂ）に示されるように、加熱装置には、加熱室１の後面壁と、この後面壁の外面に設けられたファンケース２とで構成されるファン室内に、遠心ファンよりなる送風ファン３と略環状のヒータ４とが設けられている。加熱室１の後面壁の中央には、多数のパンチング孔よりなる吸込口５が形成され、この吸込口５を挟む上下の位置に、多数のパンチング孔よりなる吹出口６が、それぞれ帯状に形成されている。 FIG. 9 (a) is a side sectional view of a conventional heating device described in Patent Document 1, and FIG. 9 (b) is a front view of the heating chamber rear wall of the heating device. As shown in FIGS. 9A and 9B, the heating device includes a centrifugal chamber in a fan chamber composed of a rear wall of the heating chamber 1 and a fan case 2 provided on the outer surface of the rear wall. A blower fan 3 composed of a fan and a substantially annular heater 4 are provided. A suction port 5 made up of a number of punching holes is formed in the center of the rear wall of the heating chamber 1, and a plurality of punching holes 6 made up of a number of punching holes are formed in strips at positions above and below the suction port 5, respectively. Has been.
　送風ファン３は、加熱室１の後面壁とファンケース２とで形成されたファン室内に、吸込口５に対向して設けられた遠心ファンである。送風ファン３はファンケース２の外部に設けたモータ７により回転駆動される。ヒータ４は、送風ファン３の外周囲（吹出側）に設けられた略環状のシーズヒータ（sheath heater）である。送風ファン３の半径方向外側の吹出口６と対向するファンケース２の内側には、吹出口６の近傍まで延びる風向板８が設けられる。 The blower fan 3 is a centrifugal fan provided in the fan chamber formed by the rear wall of the heating chamber 1 and the fan case 2 so as to face the suction port 5. The blower fan 3 is rotationally driven by a motor 7 provided outside the fan case 2. The heater 4 is a substantially annular sheathed heater (sheath-heater) provided on the outer periphery (outlet side) of the blower fan 3. A wind direction plate 8 extending to the vicinity of the air outlet 6 is provided inside the fan case 2 facing the air outlet 6 on the radially outer side of the blower fan 3.
　上記構造の加熱装置において、加熱室１内に被加熱物を載置し加熱調理を開始させると、モータ７により送風ファン３が回転し、加熱室１の空気が吸込口５からファンケース２内に吸い込まれ、送風ファン３の半径方向外方に送り出される。送り出された空気は、ヒータ４により加熱され、吹出口６から加熱室１に戻される。このようにして、加熱室１内とファンケース２内とを熱風が循環し、対流加熱が行われる。 In the heating apparatus having the above structure, when an object to be heated is placed in the heating chamber 1 and heating cooking is started, the blower fan 3 is rotated by the motor 7, and the air in the heating chamber 1 is fed into the fan case 2 from the suction port 5. And is sent out radially outward of the blower fan 3. The sent-out air is heated by the heater 4 and returned to the heating chamber 1 from the air outlet 6. In this way, hot air circulates in the heating chamber 1 and the fan case 2 to perform convection heating.
　対流加熱が開始すると、熱風の一部が風向板８に遮られて、送風ファン３の回転方向と反対側に戻ろうとするため、送風ファン３の回転方向と逆方向に位置する吹出口６からの熱風量が増加し、その分、送風ファン３の回転方向に位置する吹出口６からの熱風量が減少する。このようにして、風向板８により、熱風が吹出口６から加熱室１内に均一に供給されることができ、加熱ムラを抑制することができる。 When the convection heating starts, a part of the hot air is blocked by the wind direction plate 8 and tries to return to the side opposite to the rotation direction of the blower fan 3. The amount of hot air from the blower outlet 6 located in the rotational direction of the blower fan 3 decreases accordingly. In this way, hot air can be uniformly supplied into the heating chamber 1 from the air outlet 6 by the wind direction plate 8, and heating unevenness can be suppressed.
日本国特公平７－１１１２５６号公報Japanese Patent Publication No.7-111256 日本国特開２００６－７１１２４号公報Japanese Unexamined Patent Publication No. 2006-71124 日本国特開２００６－７１１２５号公報Japanese Unexamined Patent Publication No. 2006-71125 日本国特開２００４－９３０９２号公報Japanese Unexamined Patent Publication No. 2004-93092 日本国特開昭６３－１４０１６号公報Japanese Unexamined Patent Publication No. 63-14016
　そこで、披加熱物を均一にムラなく加熱する手段として、上記の様に風向板８を用いる方法（特許文献１参照）、および吹出し穴を用いる方法（特許文献５参照）がある。しかし、ファンケース２の開口形状は一般的に四角形であり、その四隅のコーナー部は加熱ムラへの影響が大きい部分である。 Therefore, as a means for heating the heated article uniformly and uniformly, there are a method using the wind direction plate 8 as described above (see Patent Document 1) and a method using a blowing hole (see Patent Document 5). However, the opening shape of the fan case 2 is generally a quadrangle, and the corner portions of the four corners are portions that have a great influence on heating unevenness.
　熱風は送風ファン３の回転方向側に偏って吹出される傾向にある。また、ファンケース２内の四隅のコーナー部は、熱風が淀み易い傾向にある。 The hot air tends to be blown out toward the rotation direction side of the blower fan 3. Moreover, the corners at the four corners in the fan case 2 tend to stagnate hot air.
　本発明は、上記従来の課題を解決するもので、ファンケース内の四隅のコーナー部に傾斜した平面壁を設け、熱風の加熱室への流れを均一化することによって、加熱ムラを解消する加熱装置を提供することを目的とする。 The present invention solves the above-described conventional problems, and provides heating that eliminates heating unevenness by providing inclined flat walls at the corners of the four corners in the fan case and uniformizing the flow of hot air to the heating chamber. An object is to provide an apparatus.
　前記従来の課題を解決するために、本発明の加熱装置は、被加熱物を載置する加熱室と、前記加熱室の壁面を構成する左右側壁、天壁と、底壁と、後壁と、前記後壁に形成した吸込口と少なくとも２つの吹出口と、前記後壁の前記加熱室外側に設けられた送風ファンと、前記送風ファンと加熱手段とを前記後壁とで覆うファンケースとを備え、前記送風ファンと前記加熱手段とにより前記吹出口から前記加熱室に熱風を供給する加熱装置であって、加熱室側から見たファンケース形状が、頂点を４つ以上有する多角形で、かつ対角線上のコーナー部にそれぞれ設けられた平面壁が、ファンケースの中心に対して相互に点対称に配置されたものである。 In order to solve the conventional problems, a heating device of the present invention includes a heating chamber in which an object to be heated is placed, left and right side walls, a top wall, a bottom wall, and a rear wall that constitute a wall surface of the heating chamber. A suction port formed in the rear wall, at least two air outlets, a blower fan provided outside the heating chamber of the rear wall, and a fan case that covers the blower fan and the heating means with the rear wall. A heating device for supplying hot air from the outlet to the heating chamber by the blower fan and the heating means, wherein the fan case shape viewed from the heating chamber side is a polygon having four or more vertices In addition, the planar walls provided at the corners on the diagonal line are arranged symmetrically with respect to the center of the fan case.
　これによって、ファンケースのコーナー部に斜めの平面壁を設けて、熱風の流れを均一化することができ、加熱ムラを解消することとなる。 This makes it possible to provide an oblique plane wall at the corner of the fan case to make the flow of hot air uniform and eliminate uneven heating.
　本発明の加熱装置は、ファンケースの四隅のコーナー部に平面壁を設け、熱風の流れを均一化することによって、加熱ムラを解消することができる。 The heating device of the present invention can eliminate uneven heating by providing flat walls at the corners of the four corners of the fan case and making the flow of hot air uniform.
　また、ファンケース形状（熱源室形状）の容積が小さくなり、加熱効率が向上できる。 Also, the volume of the fan case shape (heat source chamber shape) is reduced, and the heating efficiency can be improved.
本発明の実施の形態における加熱装置の側面断面図Side surface sectional drawing of the heating apparatus in embodiment of this invention 本発明の実施の形態におけるファンケース単体の正面図The front view of the fan case single-piece | unit in embodiment of this invention 本発明の実施の形態におけるファンケースに送風ファン、ヒータ、仕切板を取り付けた状態の正面図The front view of the state which attached the ventilation fan, the heater, and the partition plate to the fan case in embodiment of this invention 本発明の実施の形態における図３に示したファンケースの斜視図The perspective view of the fan case shown in FIG. 3 in embodiment of this invention 本発明の実施の形態における後壁を加熱室内側から見た正面図The front view which looked at the rear wall in embodiment of this invention from the heating chamber side 本発明の実施の形態における後壁とファンケースの分解斜視図The disassembled perspective view of the rear wall and fan case in embodiment of this invention 本発明の実施の形態における後壁とファンケースの分解斜視図The disassembled perspective view of the rear wall and fan case in embodiment of this invention 本発明の実施の形態における後壁とファンケースとを組み立てた状態での後壁を透視した正面図The front view which saw through the rear wall in the state which assembled the rear wall and fan case in embodiment of this invention （ａ）従来の加熱装置の側面断面図（ｂ）同装置の加熱室後壁の正面図(A) Side sectional view of a conventional heating device (b) Front view of the rear wall of the heating chamber of the device
　本発明の一態様として、加熱装置は、被加熱物を載置する加熱室と、前記加熱室の壁面を構成する左右側壁、天壁と、底壁と、後壁と、前記後壁に形成した吸込口と少なくとも２つの吹出口と、前記後壁の前記加熱室外側に設けられた送風ファンと、前記送風ファンと加熱手段とを前記後壁とで覆うファンケースとを備える。加熱装置は、前記送風ファンと前記加熱手段とにより前記吹出口から前記加熱室に熱風を供給する。加熱装置では、加熱室側から見たファンケース形状が、頂点を４つ以上有する多角形で、かつ対角線上のコーナー部にそれぞれ設けられた平面壁が、ファンケースの中心に対して相互に点対称に配置される。この構成により、熱風の流れを均一化することによって、加熱ムラを解消することができる。 As one aspect of the present invention, a heating device is formed on a heating chamber for placing an object to be heated, left and right side walls constituting the wall surface of the heating chamber, a top wall, a bottom wall, a rear wall, and the rear wall. And a blower fan provided outside the heating chamber on the rear wall, and a fan case that covers the blower fan and the heating means with the rear wall. The heating device supplies hot air from the air outlet to the heating chamber by the blower fan and the heating means. In the heating device, the shape of the fan case viewed from the heating chamber side is a polygon having four or more vertices, and the flat walls provided at the corners on the diagonal line are mutually pointed with respect to the center of the fan case. Arranged symmetrically. With this configuration, it is possible to eliminate heating unevenness by making the flow of hot air uniform.
　上記加熱装置は、特に、上記ファンケース形状が、一つの長方形形状と所定の角度回転したもう一つの長方形形状とで重なる部分で形成された八角形とする。この構成により、熱風の流れを均一化することによって、加熱ムラを解消することができる。 In the heating device, in particular, the fan case shape is an octagon formed by an overlapping portion of one rectangular shape and another rectangular shape rotated by a predetermined angle. With this configuration, it is possible to eliminate heating unevenness by making the flow of hot air uniform.
　上記加熱装置は、特に、上記ファンケース形状が、一つの長方形形状と所定の角度回転したもう一つの長方形形状とさらに所定の角度回転した長方形を重ね、重なる部分で形成された多角形とする。この構成により、熱風の流れを均一化することによって、加熱ムラを解消することができる。 In the heating apparatus, in particular, the fan case shape is a polygon formed by overlapping one rectangular shape, another rectangular shape rotated by a predetermined angle, and a rectangular shape further rotated by a predetermined angle. With this configuration, it is possible to eliminate heating unevenness by making the flow of hot air uniform.
　以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。 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.
　図１は、本発明の実施の形態における加熱装置の側面断面図である。図２は、ファンケース単体の正面図である。図３は、ファンケースに送風ファン、ヒータ、仕切板を取り付けた状態の正面図である。図４は、図３に示したファンケースの斜視図である。図５は、後壁を加熱室内側から見た正面図である。図６は、後壁とファンケースの分解斜視図である。図７は、後壁とファンケースの分解斜視図である。図８は、後壁とファンケースとを組み立てた状態での後壁を透視した正面図である。図９（ａ）は従来の加熱装置の側面断面図であり、図９（ｂ）は同装置の加熱室後壁の正面図である。 FIG. 1 is a side cross-sectional view of a heating device according to an embodiment of the present invention. FIG. 2 is a front view of the fan case alone. FIG. 3 is a front view of the fan case with a blower fan, a heater, and a partition plate attached thereto. FIG. 4 is a perspective view of the fan case shown in FIG. FIG. 5 is a front view of the rear wall as viewed from the heating chamber side. FIG. 6 is an exploded perspective view of the rear wall and the fan case. FIG. 7 is an exploded perspective view of the rear wall and the fan case. FIG. 8 is a front view seen through the rear wall in a state where the rear wall and the fan case are assembled. FIG. 9A is a side sectional view of a conventional heating apparatus, and FIG. 9B is a front view of the rear wall of the heating chamber of the apparatus.
　図１に示すように、加熱装置の本体１１には、被加熱物１２を内部に収納して加熱調理を行う加熱室１３が設けられる。この加熱室１３の前面には、被加熱物１２を出し入れできるドア１４が、開閉自在に設けられている。 As shown in FIG. 1, the main body 11 of the heating apparatus is provided with a heating chamber 13 that accommodates an object to be heated 12 and performs cooking. On the front surface of the heating chamber 13, a door 14 into which the article to be heated 12 can be taken in and out is provided so as to be freely opened and closed.
　加熱室１３は、左側壁１５、右側壁１６、底壁１７、天壁１８、および後壁１９を有している。左側壁１５および右側壁１６には、底壁１７に対し略並行に加熱室１３内に突出した支持部２０が上下方向に三段設けられており、加熱室１３の幅の調理皿２１を保持することが可能に構成している。なお、図１において右側壁１６を示しているが、実際には右側壁１６は視点よりも後方にあるため図１上では見えていない。 The heating chamber 13 has a left side wall 15, a right side wall 16, a bottom wall 17, a top wall 18, and a rear wall 19. The left side wall 15 and the right side wall 16 are provided with three support portions 20 extending in the vertical direction so as to protrude into the heating chamber 13 substantially in parallel with the bottom wall 17, and hold the cooking dish 21 having the width of the heating chamber 13. It is configured to be possible. Although the right side wall 16 is shown in FIG. 1, the right side wall 16 is actually behind the viewpoint and is not visible in FIG.
　加熱室１３の後壁１９の後側の面には、ファンケース２２が取り付けられる。加熱室１３の後壁１９の後側の面には、後壁１９とファンケース２２とで形成された熱源室２３が、配置されている。すなわち、加熱室１３の後壁１９は、加熱室１３と熱源室２３とを隔てる隔壁の役割を果たしている。熱源室２３内には、加熱手段として機能するヒータ２４と、遠心ファンである送風ファン２５とが設けられている。ヒータ２４および送風ファン２５は、図示しない制御部によって制御される。なお、熱源室２３の高さ方向は、加熱室１３の高さ（例えば天壁１８と底壁１７間の距離）方向と一致する。同様に、熱源室２３の幅方向は、加熱室１３の幅（例えば左側壁１５と右側壁１６間の距離）方向と一致する。本実施の形態では、熱源室２３の高さ方向の寸法よりも、熱源室２３の幅方向の寸法が大きい（例えば図５参照）。 A fan case 22 is attached to the rear surface of the rear wall 19 of the heating chamber 13. A heat source chamber 23 formed by the rear wall 19 and the fan case 22 is disposed on the rear surface of the rear wall 19 of the heating chamber 13. That is, the rear wall 19 of the heating chamber 13 serves as a partition that separates the heating chamber 13 and the heat source chamber 23. In the heat source chamber 23, a heater 24 that functions as a heating unit and a blower fan 25 that is a centrifugal fan are provided. The heater 24 and the blower fan 25 are controlled by a control unit (not shown). The height direction of the heat source chamber 23 coincides with the height direction of the heating chamber 13 (for example, the distance between the top wall 18 and the bottom wall 17). Similarly, the width direction of the heat source chamber 23 matches the width direction of the heating chamber 13 (for example, the distance between the left side wall 15 and the right side wall 16). In the present embodiment, the dimension in the width direction of the heat source chamber 23 is larger than the dimension in the height direction of the heat source chamber 23 (see, for example, FIG. 5).
　後壁１９の中央には、多数のパンチング孔よりなる吸込口２６が形成される。後壁１９には、吸込口２６を挟む上下の位置に、多数のパンチング孔よりなる上吹出口２７および下吹出口２８が、それぞれ左右方向に帯状に形成されている。 In the center of the rear wall 19, a suction port 26 made up of a number of punching holes is formed. On the rear wall 19, upper and lower outlets 27 and 28 made up of a number of punching holes are formed in strips in the left-right direction at positions above and below the suction port 26.
　吸込口２６を挟む左右の位置には、同様に多数のパンチング孔よりなる左吹出口２９および右吹出口３０が、それぞれ設けられる。これら吸込口２６と上吹出口２７、下吹出口２８、左吹出口２９、右吹出口３０を経由して、熱源室２３は加熱室１３と連通している。 In the left and right positions sandwiching the suction port 26, a left air outlet 29 and a right air outlet 30 each having a number of punching holes are provided. The heat source chamber 23 communicates with the heating chamber 13 through the suction port 26, the upper outlet 27, the lower outlet 28, the left outlet 29, and the right outlet 30.
　吸込口２６および上吹出口２７、下吹出口２８、左吹出口２９、右吹出口３０を形成するパンチング孔は、電磁波加熱の際、加熱室１３の外へ電磁波が漏洩しないように、直径２～５ｍｍ程度の複数の孔の集まりとして形成されている。 The punching holes forming the suction port 26, the upper outlet 27, the lower outlet 28, the left outlet 29, and the right outlet 30 have a diameter of 2 so that electromagnetic waves do not leak out of the heating chamber 13 during electromagnetic heating. It is formed as a collection of a plurality of holes of about 5 mm.
　ファンケース２２は、１面を開放した概略直方体形状に絞り加工で成型し、後壁１９に対して凹んでいる凹部３２Ａ（後方に突出）と、この凹部３２Ａ周辺に形成され後壁１９に接触して並べられたフランジ部３２Ｂとから構成されている。ファンケース２２は凹部３２Ａ内のほぼ中心に送風ファン２５を配置する。ファンケース２２の凹部３２Ａが吸込口２６および上吹出口２７、下吹出口２８、左吹出口２９、右吹出口３０を覆うように、ファンケース２２は後壁１９に取り付けられる。 The fan case 22 is formed by drawing into a substantially rectangular parallelepiped shape with one surface open, and is recessed with respect to the rear wall 19 (protruded rearward) and formed around the concave portion 32A to contact the rear wall 19. And the flange portion 32B arranged in parallel. The fan case 22 has the blower fan 25 disposed substantially in the center of the recess 32A. The fan case 22 is attached to the rear wall 19 so that the concave portion 32 </ b> A of the fan case 22 covers the inlet 26 and the upper outlet 27, the lower outlet 28, the left outlet 29, and the right outlet 30.
　ファンケース２２の凹部３２Ａを前方（加熱室１３内側）から見ると、長方形の四隅のコーナー部３３、３４、３５、３６をコーナーカットした略長方形である。このコーナーカットの形状について、説明する。 When the concave portion 32A of the fan case 22 is viewed from the front (inside the heating chamber 13), the rectangular corner portions 33, 34, 35, and 36 at the corners are substantially rectangular. The shape of this corner cut will be described.
　まず、送風ファン２５の回転軸に直交する垂直な面上に、後壁１９の凹部３２Ａの開口部を表わす長方形を想定する。次に、その長方形と同軸の正方形を想定し、前記長方形のたて、よこと正方形のたて、よことがそれぞれ平行な状態から、送風ファン２５の回転軸を中心に所定の角度回転する。そして、その両方が重なる部分のみで形成した形状が、ファンケース２２の凹部３２Ａの開口部形状である（図２参照）。 First, a rectangle representing the opening of the recess 32A of the rear wall 19 on a vertical surface orthogonal to the rotation axis of the blower fan 25 is assumed. Next, assuming a rectangular shape that is coaxial with the rectangle, the rectangular frame, the square, and the square are rotated in a predetermined angle around the rotation axis of the blower fan 25 from a parallel state. And the shape formed only by the part which both overlaps is the opening part shape of the recessed part 32A of the fan case 22 (refer FIG. 2).
　長方形と正方形とを重ねているので、基本の長方形の四隅のコーナー部３３、３４、３５、３６は、正面から見て、斜めの直線に変わり、ファンケース２２の凹部３２Ａの開口部形状は、八角形になっている。この形状では、隣り合う左右のコーナー部３３、３６とコーナー部３４、３５は相互に非対称形状となる。また、１８０°回転させるとコーナー部３３、３５とコーナー部３４、３６は重なるよう、送風ファン２５の回転軸を中心にして点対称かつ送風ファンからの風に対して鋭角をなすように設けられている。 Since the rectangle and the square are overlapped, the corners 33, 34, 35, and 36 at the four corners of the basic rectangle are changed to diagonal straight lines when viewed from the front, and the shape of the opening of the recess 32A of the fan case 22 is It is octagonal. In this shape, the left and right corner portions 33 and 36 and the corner portions 34 and 35 adjacent to each other are asymmetrical to each other. Further, the corner portions 33, 35 and the corner portions 34, 36 are provided so as to be symmetrical with respect to the rotation axis of the blower fan 25 and have an acute angle with respect to the wind from the blower fan when rotated by 180 °. ing.
　熱源室２３内の送風ファン２５は、熱源室２３内に吸込口２６と対向させて設けられる。送風ファン２５の外周囲（吹出側）には、略環状のヒータ２４が設けられる。送風ファン２５は、熱源室２３の外部に設けたモータ３１により回転駆動され、空気流を発生させる。その空気流は、ヒータ２４によって加熱され熱風となり、上吹出口２７、下吹出口２８、左吹出口２９、右吹出口３０を通して、加熱室１３内に送られて被加熱物１２を対流加熱する。 The blower fan 25 in the heat source chamber 23 is provided in the heat source chamber 23 so as to face the suction port 26. A substantially annular heater 24 is provided on the outer periphery (outlet side) of the blower fan 25. The blower fan 25 is rotationally driven by a motor 31 provided outside the heat source chamber 23 to generate an air flow. The air flow is heated by the heater 24 to become hot air, and is sent into the heating chamber 13 through the upper air outlet 27, the lower air outlet 28, the left air outlet 29, and the right air outlet 30 to convectively heat the article 12 to be heated. .
　加熱室１３側から見てヒータ２４の左右には、同一形状の左接線方向仕切板４１、右接線方向仕切板４２が、ヒータ２４に対して略点対称的な位置関係で配設されている。
　左接線方向仕切板４１および右接線方向仕切板４２は、それぞれ仕切板基部４３、４４の一部をファンケース２２方向に折曲して形成している。これら仕切板基部４３、４４は、弾性を有する平面視略ロ字状に形成された金属板で形成され、ファンケース２２壁面に対して４５度の角度で内向きに、傾斜して取り付けられている。そして、仕切板基部４３、４４はファンケース２２にカシメや溶接により固定される。 A left tangential partition plate 41 and a right tangential partition plate 42 having the same shape are disposed on the left and right sides of the heater 24 when viewed from the heating chamber 13 side, in a substantially point-symmetrical positional relationship with respect to the heater 24. .
The left tangential partition plate 41 and the right tangential partition plate 42 are formed by bending a part of the partition plate bases 43 and 44 in the direction of the fan case 22, respectively. These partition plate bases 43 and 44 are formed of a metal plate formed in a substantially square shape having elasticity in plan view, and are attached to the fan case 22 at an angle of 45 degrees inward and inclined. Yes. The partition plate bases 43 and 44 are fixed to the fan case 22 by caulking or welding.
　また、左接線方向仕切板４１および右接線方向仕切板４２に隣接する位置で、かつ送風ファン２５の回転軌跡の半径方向に、左半径方向仕切板４５および右半径方向仕切板４６がそれぞれ設けられている。左接線方向仕切板４１と左半径方向仕切板４５、及び右接線方向仕切板４２と右半径方向仕切板４６は、相互にそれぞれ略９０度をなし、Ｌ字状に配置されている。 Further, a left radial partition plate 45 and a right radial partition plate 46 are respectively provided at positions adjacent to the left tangential partition plate 41 and the right tangential partition plate 42 and in the radial direction of the rotation trajectory of the blower fan 25. ing. The left tangential partition plate 41 and the left radial partition plate 45, and the right tangential partition plate 42 and the right radial partition plate 46 are arranged in an L shape at substantially 90 degrees.
　以下、本実施の形態にかかる加熱装置の動作について説明する。 Hereinafter, the operation of the heating apparatus according to the present embodiment will be described.
　例えば、オーブン調理の場合、クッキー等の被加熱物１２が載せられた調理皿２１が、加熱室１３の左右壁面に設けられた支持部２０に係止され、後壁１９に接触するまで押し込まれる。そして、ドア１４が閉められ、本体１１の前面に設けられた操作部（図示せず）上の所定ボタンが操作されると、オーブン調理が開始される。 For example, in the case of oven cooking, the cooking pan 21 on which the article to be heated 12 such as a cookie is placed is locked by the support portions 20 provided on the left and right wall surfaces of the heating chamber 13 and pushed in until it contacts the rear wall 19. . Then, when the door 14 is closed and a predetermined button on an operation unit (not shown) provided on the front surface of the main body 11 is operated, oven cooking is started.
　この操作部で被加熱物１２の加熱時間や加熱温度などが設定でき、操作部から入力された指示に基づき、マイコンからなる制御部は、ヒータ２４、モータ３１等を制御する。 The heating time and heating temperature of the object to be heated 12 can be set by this operation unit, and the control unit composed of a microcomputer controls the heater 24, the motor 31 and the like based on an instruction input from the operation unit.
　モータ３１の回転駆動により送風ファン２５が回転を始めると、送風ファン２５から渦巻き状外向きに吹き出した空気流は、左接線方向仕切板４１および右接線方向仕切板４２のある場所ではこれらの仕切板によってモータ３１側、すなわち、後方に押し込まれる。そして、この押し込まれた空気流は、送風ファン２５よりやや後方に位置するヒータ２４の熱により高温に熱せられる。 When the blower fan 25 starts to rotate by the rotational drive of the motor 31, the air flow blown out from the blower fan 25 in a spiral outward direction is divided into these partitions in the place where the left tangential partition plate 41 and the right tangential partition plate 42 are located. The plate is pushed into the motor 31 side, that is, backward. Then, the pushed air flow is heated to a high temperature by the heat of the heater 24 located slightly behind the blower fan 25.
　ヒータ２４により加熱された熱風のうち、上方への熱風は上吹出口２７から、下方への熱風は下吹出口２８から、それぞれ加熱室１３に吹き出す。これらの熱風は、送風ファン２５の回転方向に沿った渦巻き状外向きの風向を持っているので、上吹出口２７からの熱風は天壁１８または右側壁１６に、下吹出口２８からの熱風は底壁１７または左側壁１５に、それぞれ向かって流れる。 Of the hot air heated by the heater 24, hot air upward is blown out from the upper outlet 27, and hot air downward is blown out from the lower outlet 28 into the heating chamber 13. Since these hot air has a spiral outward wind direction along the rotation direction of the blower fan 25, the hot air from the upper outlet 27 is applied to the top wall 18 or the right side wall 16 and hot air from the lower outlet 28. Flows toward the bottom wall 17 or the left side wall 15, respectively.
　一方、熱源室２３内における左右方向の熱風は、左接線方向仕切板４１および右接線方向仕切板４２に導かれて熱源室２３内を迂回して、熱源室２３の左右の隅付近まで一旦達し、そこで風向を変えて左吹出口２９および右吹出口３０に向かうようになる。この時、左半径方向仕切板４５および右半径方向仕切板４６が設けられている為に、左半径方向仕切板４５および右半径方向仕切板４６が無い場合に比べ、熱源室２３内における左右方向の熱風をより多く集めることができる。 On the other hand, the hot air in the left-right direction in the heat source chamber 23 is guided to the left tangential partition plate 41 and the right tangential partition plate 42, bypasses the heat source chamber 23, and temporarily reaches the vicinity of the left and right corners of the heat source chamber 23. Therefore, the wind direction is changed to go to the left outlet 29 and the right outlet 30. At this time, since the left radial partition plate 45 and the right radial partition plate 46 are provided, the left and right directions in the heat source chamber 23 are compared with the case where the left radial partition plate 45 and the right radial partition plate 46 are not provided. You can collect more hot air.
　次に、左右方向の熱風の風向は、熱源室２３の隅から中央への方向となっているため、左吹出口２９および右吹出口３０から加熱室１３内に吹き出した左右方向の熱風はいずれも、加熱室１３内の中央方向、すなわち、被加熱物１２の方向に向かうようになる。また、左右方向の熱風の風向は、左半径方向仕切板４５および右半径方向仕切板４６が設けられている為に、熱風の方向を被加熱物１２の方向へ変えるので、左半径方向仕切板４５、右半径方向仕切板４６が無い場合に比べ、被加熱物１２の方向により向かうようになる。 Next, since the direction of the hot air in the left-right direction is from the corner to the center of the heat source chamber 23, the hot air in the left-right direction blown into the heating chamber 13 from the left outlet 29 and the right outlet 30 is Also, it goes toward the center in the heating chamber 13, that is, toward the object to be heated 12. Further, the direction of the hot air in the left-right direction changes the direction of the hot air to the direction of the object to be heated 12 because the left radial partition plate 45 and the right radial partition plate 46 are provided, so the left radial partition plate 45, compared with the case where the right radial direction partition plate 46 is not provided, the direction of the article to be heated 12 is more directed.
　以上、本実施の形態によれば、熱源室２３から左吹出口２９および右吹出口３０を通って加熱室１３に吹き出す熱風を被加熱物１２に集中させることができる。その結果、熱風が壁面ばかりを加熱することによる放熱ロスを抑制した効率的な被加熱物の加熱が可能となる。したがって、加熱室の予熱や加熱調理のスピードを向上させることができる。この時、左半径方向仕切板４５および右半径方向仕切板４６が設けられている為に、左半径方向仕切板４５および右半径方向仕切板４６が無い場合に比べ、熱源室２３から左吹出口２９および右吹出口３０を通って加熱室１３に吹き出す熱風を被加熱物１２により集中させることができる。 As described above, according to the present embodiment, the hot air blown from the heat source chamber 23 through the left outlet 29 and the right outlet 30 to the heating chamber 13 can be concentrated on the object to be heated 12. As a result, it is possible to efficiently heat the object to be heated while suppressing heat radiation loss due to the hot air heating only the wall surface. Therefore, the preheating of the heating chamber and the speed of cooking can be improved. At this time, since the left radial partition plate 45 and the right radial partition plate 46 are provided, compared with the case where the left radial partition plate 45 and the right radial partition plate 46 are not provided, the left air outlet from the heat source chamber 23. The hot air blown out to the heating chamber 13 through the air outlet 29 and the right outlet 30 can be concentrated by the article to be heated 12.
　換言すれば、左半径方向仕切板４５および右半径方向仕切板４６により、熱風の方向を被加熱物１２の方向に向きを変えることができ、かつ、熱風を集めることができる。しかし、熱風の向きは加熱室１３外側への向きとなり加熱室１３の壁ばかり加熱することになる。右接線方向仕切板４２で、熱風は加熱室１３中央への向きとなる。右接線方向仕切板４２に左半径方向仕切板４５および右半径方向仕切板４６を組み合わせることで、熱風を被加熱物１２の中央へより向かわせることができる。 In other words, the direction of the hot air can be changed to the direction of the article to be heated 12 by the left radial partition plate 45 and the right radial partition plate 46, and hot air can be collected. However, the direction of the hot air is toward the outside of the heating chamber 13 and only the wall of the heating chamber 13 is heated. With the right tangential partition plate 42, the hot air is directed toward the center of the heating chamber 13. By combining the left tangential partition plate 42 with the left radial partition plate 45 and the right radial partition plate 46, hot air can be directed toward the center of the article 12 to be heated.
　また、熱源室２３の薄型化にも有利なので、加熱室１３の容量を確保しつつも全体の奥行き寸法が小さく、かつ、省エネ性能の高い加熱装置を提供できる。 Also, since the heat source chamber 23 is advantageous in thickness reduction, it is possible to provide a heating device having a small overall depth dimension and high energy saving performance while ensuring the capacity of the heating chamber 13.
　なお、本実施の形態では、ヒータ２４として、環状のシーズヒータ（sheath heater）が使用されるが、シーズヒータ（sheath heater）の表面に放熱フィンを設けたものであっても良く、同様の効果が得られる。 In the present embodiment, an annular sheathed heater is used as the heater 24. However, a radiation fin may be provided on the surface of the sheathed heater, and the same effect is obtained. Is obtained.
　また、本実施の形態の回転軸は、送風ファン２５の回転軸と同心であるが、形状を最適化する為に、回転軸は必ずしも、送風ファン２５の回転軸と同心でなく、回転軸がずれていても良い。 In addition, although the rotation axis of the present embodiment is concentric with the rotation axis of the blower fan 25, in order to optimize the shape, the rotation axis is not necessarily concentric with the rotation axis of the blower fan 25. It may be shifted.
　また、所定の角度によっては、コーナーの三角形部分の長辺と短辺が水平方向と垂直方向が変わるが、熱風を最適化できれば、どちらであってもよい。 Also, depending on the predetermined angle, the long side and the short side of the triangular portion of the corner change in the horizontal direction and the vertical direction, but either may be used as long as the hot air can be optimized.
　本発明を詳細にまた特定の実施態様を参照して説明したが、本発明の精神と範囲を逸脱することなく様々な変更や修正を加えることができることは当業者にとって明らかである。 Although the present invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.
　本出願は、２０１０年８月３１日出願の日本特許出願（特願２０１０－１９３４５３）、に基づくものであり、その内容はここに参照として取り込まれる。 This application is based on a Japanese patent application filed on August 31, 2010 (Japanese Patent Application No. 2010-193453), the contents of which are incorporated herein by reference.
　本発明にかかる加熱装置によれば、加熱ムラを抑え均一な加熱を実現できる。このため、対流加熱によるオーブン機能を有する電子レンジもしくは電気オーブン、または、業務用の各種オーブン加熱装置、または、乾燥装置などの工業分野での加熱装置、または、陶芸加熱、または、焼結もしくは生体化学反応等の用途に適用できる。 According to the heating device of the present invention, uniform heating can be realized while suppressing uneven heating. Therefore, microwave ovens or electric ovens having an oven function by convection heating, industrial oven heating devices such as commercial oven heating devices or drying devices, ceramic heating, sintering, or living organisms Applicable to chemical reactions and other uses.
　１２　被加熱物
　１３　加熱室
　１４　ドア
　１５　左側壁
　１６　右側壁
　１７　底壁
　１８　天壁
　１９　後壁
　２０　支持部
　２１　調理皿
　２２　ファンケース
　２３　熱源室
　２４　ヒータ（加熱手段）
　２５　送風ファン
　２６　吸込口
　２７　上吹出口
　２８　下吹出口
　２９　左吹出口
　３０　右吹出口
　３１　モータ
　３２Ａ　凹部
　３２Ｂ　フランジ部
　３３、３４、３５、３６　コーナー部
　４１　左接線方向仕切板
　４２　右接線方向仕切板
　４３、４４　仕切板基部
　４５　左半径方向仕切板
　４６　右半径方向仕切板 DESCRIPTION OF SYMBOLS 12 To-be-heated object 13 Heating chamber 14 Door 15 Left side wall 16 Right side wall 17 Bottom wall 18 Top wall 19 Rear wall 20 Support part 21 Cooking dish 22 Fan case 23 Heat source chamber 24 Heater (heating means)
25 Blower Fan 26 Suction Port 27 Upper Outlet 28 Lower Outlet 29 Left Outlet 30 Right Outlet 31 Motor 32A Recess 32B Flange 33, 34, 35, 36 Corner 41 Left Tangential Partition Plate 42 Right Tangential Partition Plate 42 43, 44 Partition base 45 Left radial divider 46 Right radial divider

Claims (4)

  1. 　被加熱物を載置する加熱室と、
    　前記加熱室の壁面を構成する後壁と、
    　前記後壁に形成した吸込口と少なくとも２つの吹出口と、
    　前記後壁の前記加熱室外側に設けられた送風ファンと、
    　前記送風ファンを前記後壁とで覆うファンケースと、
    　前記後壁と前記ファンケースとで形成され、前記送風ファンと加熱手段とにより前記吹出口を通して前記加熱室に熱風を供給する熱源室とを備えた加熱装置であって、
    　前記ファンケースは、前記後壁に対して凹んでいる凹部と、この凹部周辺に形成され前記後壁に接触して並べて設けられたフランジ部とを有し、
    　前記ファンケースの凹部を前記加熱室側から見た形状が、頂点を４つ以上有する多角形で、かつ、対角線上のコーナー部にそれぞれ設けられた平面壁が、前記ファンケースの中心に対して相互に点対称かつ前記送風ファンからの風に対して鋭角をなすよう設けられている、
    　加熱装置。     A heating chamber for placing an object to be heated;
    A rear wall constituting a wall surface of the heating chamber;
    A suction port formed in the rear wall and at least two outlets;
    A blower fan provided outside the heating chamber of the rear wall;
    A fan case that covers the blower fan with the rear wall;
    A heating device that includes a heat source chamber that is formed by the rear wall and the fan case, and that supplies hot air to the heating chamber through the blowout port by the blower fan and heating means,
    The fan case has a recessed portion that is recessed with respect to the rear wall, and a flange portion that is formed around the recessed portion and arranged in contact with the rear wall,
    The shape of the concave portion of the fan case viewed from the heating chamber side is a polygon having four or more vertices, and the planar walls respectively provided at the corners on the diagonal line are in relation to the center of the fan case. It is provided so as to be point-symmetric with each other and form an acute angle with respect to the wind from the blower fan,
    Heating device.
  2. 　前記ファンケース形状が、一つの長方形形状と所定の角度回転したもう一つの長方形形状とで重なる部分で形成された八角形形状を備えた、
    　請求項１に記載の加熱装置。     The fan case shape has an octagonal shape formed by overlapping one rectangular shape and another rectangular shape rotated by a predetermined angle.
    The heating apparatus according to claim 1.
  3. 　前記ファンケース形状が、一つの長方形形状と所定の角度回転したもう一つの長方形形状とさらに所定の角度回転した長方形を重ねていき、重なる部分で形成された多角形形状を備えた、
    　請求項１に記載の加熱装置。     The fan case shape has a rectangular shape formed by overlapping one rectangular shape, another rectangular shape rotated by a predetermined angle, and a rectangular shape further rotated by a predetermined angle, and overlapping portions,
    The heating apparatus according to claim 1.
  4. 　前記熱源室は、高さ方向の寸法より、幅方向の寸法の方が大きい、
    　請求項１に記載の加熱装置。     The heat source chamber has a larger dimension in the width direction than a dimension in the height direction.
    The heating apparatus according to claim 1.
PCT/JP2011/004877 2010-08-31 2011-08-31 Heating device WO2012029310A1 (en)

Applications Claiming Priority (2)

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JP2010-193453 2010-08-31
JP2010193453A JP2012052688A (en) 2010-08-31 2010-08-31 Heating device

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52139390U (en) * 1976-04-15 1977-10-22
JPS53121191U (en) * 1977-03-03 1978-09-27
JP2006275390A (en) * 2005-03-29 2006-10-12 Matsushita Electric Ind Co Ltd Cooking apparatus
JP2008014620A (en) * 2006-07-10 2008-01-24 Matsushita Electric Ind Co Ltd Heating cooker
JP2008232472A (en) * 2007-03-19 2008-10-02 Hitachi Appliances Inc Heating cooker

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52139390U (en) * 1976-04-15 1977-10-22
JPS53121191U (en) * 1977-03-03 1978-09-27
JP2006275390A (en) * 2005-03-29 2006-10-12 Matsushita Electric Ind Co Ltd Cooking apparatus
JP2008014620A (en) * 2006-07-10 2008-01-24 Matsushita Electric Ind Co Ltd Heating cooker
JP2008232472A (en) * 2007-03-19 2008-10-02 Hitachi Appliances Inc Heating cooker

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