JP3931431B2 - High frequency heating device - Google Patents

High frequency heating device Download PDF

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Publication number
JP3931431B2
JP3931431B2 JP17106398A JP17106398A JP3931431B2 JP 3931431 B2 JP3931431 B2 JP 3931431B2 JP 17106398 A JP17106398 A JP 17106398A JP 17106398 A JP17106398 A JP 17106398A JP 3931431 B2 JP3931431 B2 JP 3931431B2
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JP
Japan
Prior art keywords
heating chamber
opening
door
intake hole
machine room
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP17106398A
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Japanese (ja)
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JP2000002430A (en
Inventor
昌弘 新田
孝二 山本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to JP17106398A priority Critical patent/JP3931431B2/en
Publication of JP2000002430A publication Critical patent/JP2000002430A/en
Application granted granted Critical
Publication of JP3931431B2 publication Critical patent/JP3931431B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Constitution Of High-Frequency Heating (AREA)
  • Electric Ovens (AREA)
  • Electric Stoves And Ranges (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は電子レンジにおいて、加熱室と扉の間隙からの結露水や熱気の漏れ防止に対する構造に関する。
【０００２】
【従来の技術】
従来この種の高周波加熱装置は、特開平６−３４１４４号公報に記載されているようなものであった。
【０００３】
図５に示すように加熱室１の前面下部２に開口３を持つカバー４が設けられており、扉５と加熱室前面下部との間隙より熱気６を外気７とともに機体８の内部に取り込む構成となっている。
【０００４】
【発明が解決しようとする課題】
しかしながら上記従来の高周波加熱装置では、加熱室内で発生する熱気や蒸気も機体内に容易に侵入するため、機体内の電気部品が高温に曝され耐久性を損ねたり、侵入した蒸気によって機体が腐食したり、電気部品の絶縁劣化を招くといった課題があった。またカバーに堆積した食品カスなどを除去が困難で、非衛生的であるという課題があった。
【０００５】
【課題を解決するための手段】
本発明は上記課題を解決するため加熱室開口下部に突起を設け、前記突起は先端部と加熱室開口前面当接部との間に窪みを設け、かつ、先端部より前記吸気孔に対向する面に向け傾斜を設けて当該傾斜に沿って前記吸気孔へ外気を導入させる構成としたものである。
【０００６】
上記発明によれば、扉と加熱室前面下部との間隙から漏れる熱気や蒸気の侵入を突起で阻止することができるばかりでなく、結露した水が滴下した場合に、この水を窪みで受け止めることもでき、また、食品より生じる汚れなどが付着した場合も容易に清掃することができる。
【０００７】
【発明の実施の形態】
本発明の請求項１にかかる高周波加熱装置は、前面に開口部を設けた被加熱物を収納し加熱する加熱室と、前記開口部に対向して開閉自在に設けた扉と、前記加熱室に結合された高周波発生装置や、前記高周波発生装置を駆動する電源部や、前記高周波発生装置や電源部を冷却する冷却手段などからなる機械室とを備え、前記機械室を前記加熱室の下部に配し、前記加熱室開口前面下部に位置する前記機械室の前面に略前記扉の幅にわたり略扉の厚みの突起を配するとともに、前記機械室前面に冷却装置の吸気孔を設け、前記突起は先端部と加熱室開口前面当接部との間に窪みを設け、かつ、先端部より前記吸気孔に対向する面に向け傾斜を設けて当該傾斜に沿って前記吸気孔へ外気を導入させる構成としたものである。
【０００８】
そして、突起に設けた窪みが扉と加熱室開口下部との間隙より漏れる熱気や蒸気の侵入を阻止し、機体内の電気部品が高温や高湿に曝されることがなく信頼性，耐久性を向上させることができるばかりでなく、結露した水が滴下した場合に、この水を窪みで受け止めることもできる。また、食品より生じる汚れなどが付着した場合も容易に清掃することができる。
【０００９】
また、突起の設けた傾斜により扉と加熱室下部との間隙より漏れる熱気や蒸気と機械室前面より取り込む外気を分離することができる。
【００１０】
【実施例】
以下、本発明の実施例について図面を用いて説明する。
【００１１】
（参考例１）
図１は本発明の参考例１の高周波加熱装置の側面断面図を示す。また、図２は同高周波加熱装置の加熱室開口下部の詳細断面図である。
【００１２】
図１において、食品を収納し加熱する加熱室１には高周波発生手段であるマグネトロン９が高周波を伝送する導波管１０を介して配置されている。また、機体８の内部には送風装置であるプロペラファン１１とマグネトロン９の駆動電源部のインバータ電源１２が配置されている。加熱室１の開口面に対向する位置には、開閉自在に扉５が設けられている。加熱室開口部すなわち扉５の下部には突起１３が機体の底板１４に取り付けられている。
【００１３】
図２は加熱室開口下部の詳細断面図である。扉５は覗き窓部のファインダー部１５と電波漏洩阻止手段であるシール部１６とチョーク部１７と構造部材である外装部１８とチョークカバー部１９から構成されている。突起１３は底板１４にネジにより加熱室開口下部に固定されている。突起１３には開口前面の垂線（Ｙ−Ｙ’）の前ａ、後ｂに開口を有する深さｄの溝２０が設けられており、加熱室１内部で発生した蒸気や開口前面、ファインダー部１５に結露した水が滴下する場合に、この水を受け止める。更に、この突起１３を合成樹脂で構成すれば機体が腐食することがない。
【００１４】
（実施例１）
図３は本発明の実施例１の高周波加熱装置の側面断面図を示す。
【００１５】
本実施例において、参考例１と異なる点は、機体８内部の部品配置である。マグネトロン９、インバーター１２、プロペラファン１１は加熱室１の下部に配置されている。さらに加熱室１の開口面に対向する位置に設けられた扉５が支点２１により縦方向に開閉する点である。図４は加熱室開口下部の詳細断面図である。扉５は覗き窓部のファインダー部１５と電波漏洩阻止手段であるシール部１６とチョーク部１７と構造部材である外装部１８とチョークカバー部１９から構成されている。突起１３は底板１４にネジにより加熱室開口下部に固定されている。扉５の前面には機器の操作を行う操作パネル２２が設けられ扉５の下端は傾斜しており、支点２１を中心に回転し扉５を機器の縦方向に開閉する。この場合扉５の先端（Ｔ点）は円弧状（Ｒ−Ｒ’）の動きをする。回転の際、扉５先端と突起１３の間隙を最低１０ｍｍ以上設けるとともに突起１３の先端部と加熱室開口前面当接部との間に高さｈ１の窪み２３を設ける。また、底板前面部には吸気口２４があり、対向する機体８内部には送風装置であるプロペラファン１１を配置している。吸気孔２４より取り込む外気７の導入を促進するために突起１３には傾斜（ｈ２）が設けられているため、扉５と加熱室開口前面との間隙より漏れる熱気や蒸気と機体内に取り込む外気の分離が有効になされるばかりでなく、開口前面，ファインダー部１５に結露した水が滴下した場合に、この水を窪み２３で受け止めることもできる。また、食品より生じる汚れなどが付着した場合も容易に清掃することができる。
【００１６】
【発明の効果】
本発明にかかる高周波加熱装置によれば、突起に設けた溝が扉と加熱室開口下部との間隙より漏れる熱気や蒸気の侵入を阻止し、機体内の電気部品が高温や高湿に曝されることがなく信頼性，耐久性を向上させることができる。また、吸気孔から機体外に漏れる送風装置などからの騒音も低減することができる。
【００１７】
また、突起に窪みと傾斜を設けて当該傾斜に沿って吸気孔へ外気を取り込む構成としたことにより扉と加熱室下部との間隙より漏れる熱気や蒸気と機械室前面より取り込む外気を分離することができるばかりでなく、結露した水が滴下した場合に、この水を窪みで受け止めることもできる。また、食品より生じる汚れなどが付着した場合も容易に清掃することができる。
【図面の簡単な説明】
【図１】 本発明の参考例１における高周波加熱装置の側面断面図
【図２】 同高周波加熱装置の加熱室開口下部の詳細断面図
【図３】 本発明の実施例１における高周波加熱装置の側面断面図
【図４】 同高周波加熱装置の加熱室開口下部の詳細断面図
【図５】 従来例の高周波加熱装置の加熱室開口下部の詳細断面図
【符号の説明】
１ 加熱室
４ カバー
５ 扉
８ 機体
９ マグネトロン
１１ プロペラファン
１２ インバータ
１３ 突起
１４ 底板
２０ 溝
２２ 操作パネル
２３ 窪み
２４ 吸気孔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for preventing leakage of condensed water and hot air from a gap between a heating chamber and a door in a microwave oven.
[0002]
[Prior art]
Conventionally, this type of high-frequency heating apparatus has been described in JP-A-6-34144.
[0003]
As shown in FIG. 5, a cover 4 having an opening 3 is provided at the front lower portion 2 of the heating chamber 1, and hot air 6 is taken into the body 8 along with the outside air 7 through a gap between the door 5 and the lower front portion of the heating chamber. It has become.
[0004]
[Problems to be solved by the invention]
However, in the conventional high-frequency heating device, since hot air and steam generated in the heating chamber also easily enter the machine body, the electrical components in the machine body are exposed to high temperatures, impairing durability, or the machine body is corroded by the entered steam. And there has been a problem that it causes deterioration of insulation of electrical parts. In addition, there is a problem that it is difficult to remove food residue deposited on the cover and it is unsanitary.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a protrusion at the lower portion of the heating chamber opening, the protrusion has a recess between the tip portion and the front contact portion of the heating chamber opening, and faces the intake hole from the tip portion. An inclination is provided toward the surface, and outside air is introduced into the intake hole along the inclination .
[0006]
According to the above invention , not only the protrusion of hot air and steam leaking from the gap between the door and the front lower portion of the heating chamber can be prevented by the protrusions , but when the condensed water drops, the water is received in the depression. In addition, cleaning can be easily performed when dirt or the like generated from food is attached.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The high-frequency heating device according to claim 1 of the present invention includes a heating chamber that houses and heats an object to be heated having an opening on the front surface, a door that is openable and closable facing the opening, and the heating chamber. A high-frequency generator coupled to the power generation unit, a power supply unit that drives the high-frequency generation device, and a machine room that includes a cooling unit that cools the high-frequency generation device and the power supply unit. And a protrusion having a thickness of substantially the door across the width of the door is provided on the front surface of the machine room located at the lower front of the heating chamber opening, and an intake hole of a cooling device is provided on the front surface of the machine room, The protrusion has a recess between the tip and the front contact portion of the heating chamber opening, and has an inclination from the tip toward the surface facing the intake hole, and introduces outside air to the intake hole along the inclination. It is set as the structure to be made .
[0008]
In addition, the depression provided in the protrusion prevents the intrusion of hot air and steam leaking from the gap between the door and the lower part of the heating chamber opening. In addition to improving the water content, it is also possible to receive the water in the depression when condensed water drops. Moreover, it can be easily cleaned even when dirt or the like generated from food is attached .
[0009]
In addition, the inclination provided with the protrusions can separate the hot air and steam leaking from the gap between the door and the lower part of the heating chamber and the outside air taken in from the front of the machine room.
[0010]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0011]
( Reference Example 1)
FIG. 1 is a side sectional view of a high-frequency heating device according to Reference Example 1 of the present invention. FIG. 2 is a detailed cross-sectional view of the lower part of the heating chamber opening of the high-frequency heating device.
[0012]
In FIG. 1, a magnetron 9 as a high-frequency generating means is disposed in a heating chamber 1 that stores and heats food via a waveguide 10 that transmits a high frequency. In addition, a propeller fan 11 which is a blower and an inverter power supply 12 for a drive power supply unit of the magnetron 9 are disposed inside the machine body 8. A door 5 is provided at a position facing the opening surface of the heating chamber 1 so as to be freely opened and closed. A protrusion 13 is attached to the bottom plate 14 of the fuselage at the opening of the heating chamber, that is, at the bottom of the door 5.
[0013]
FIG. 2 is a detailed cross-sectional view of the lower portion of the heating chamber opening. The door 5 includes a viewfinder finder 15, a seal 16 as a radio wave leakage prevention means, a choke 17, an exterior 18 as a structural member, and a choke cover 19. The protrusion 13 is fixed to the bottom plate 14 at the lower portion of the heating chamber opening with screws. The protrusion 13 is provided with a groove 20 having a depth d having an opening in front a and rear b of the front surface (YY ′) of the opening front surface, steam generated in the heating chamber 1, front surface of the opening, viewfinder portion When water condensed on 15 drops, this water is received. Furthermore, if the projections 13 are made of synthetic resin, the airframe will not corrode.
[0014]
(Example 1 )
FIG. 3 is a side sectional view of the high-frequency heating device according to the first embodiment of the present invention.
[0015]
In the present embodiment, the difference from the reference example 1 is the arrangement of components inside the fuselage 8. The magnetron 9, the inverter 12, and the propeller fan 11 are disposed in the lower part of the heating chamber 1. Further, the door 5 provided at a position facing the opening surface of the heating chamber 1 is opened and closed in the vertical direction by the fulcrum 21. FIG. 4 is a detailed cross-sectional view of the lower portion of the heating chamber opening. The door 5 includes a viewfinder finder 15, a seal 16 as a radio wave leakage prevention means, a choke 17, an exterior 18 as a structural member, and a choke cover 19. The protrusion 13 is fixed to the bottom plate 14 at the lower portion of the heating chamber opening with screws. An operation panel 22 for operating the device is provided on the front surface of the door 5, and the lower end of the door 5 is inclined, and rotates about the fulcrum 21 to open and close the door 5 in the vertical direction of the device. In this case, the tip (point T) of the door 5 moves in an arc shape (RR ′). At the time of rotation, a gap of at least 10 mm is provided between the front end of the door 5 and the projection 13 and a recess 23 having a height h1 is provided between the front end portion of the projection 13 and the heating chamber opening front contact portion. In addition, an air inlet 24 is provided on the front surface of the bottom plate, and a propeller fan 11 serving as a blower is disposed inside the opposite body 8. Since the protrusion 13 is provided with an inclination (h2) in order to promote the introduction of the outside air 7 taken in from the intake hole 24, the outside air taken in the air and the hot air leaking from the gap between the door 5 and the heating chamber opening front surface. In addition, when the water condensed on the front surface of the opening and the viewfinder portion 15 is dropped, this water can be received by the recess 23. Moreover, it can be easily cleaned even when dirt or the like generated from food is attached.
[0016]
【The invention's effect】
According to the high-frequency heating device of the present invention, the groove provided in the protrusion prevents intrusion of hot air and steam leaking from the gap between the door and the heating chamber opening, and the electrical components in the machine body are exposed to high temperature and high humidity. Reliability and durability can be improved. In addition, noise from a blower that leaks from the air intake hole to the outside of the machine body can be reduced.
[0017]
Furthermore, separating the outside air to take from hot air and steam and a machine chamber front leaking from the gap between the heating chamber bottom and door with the construction in which by providing a slope and depressions in the projection taking outside air into the intake hole along the inclination Not only can this occur, but when condensed water drops, this water can be received in the depression. Moreover, it can be easily cleaned even when dirt or the like generated from food is attached .
[Brief description of the drawings]
[1] a high-frequency heating apparatus according to the first embodiment of the detailed cross-sectional view of the heating chamber opening lower side sectional view [FIG. 2] the high frequency heating apparatus of high-frequency heating apparatus [3] The present invention in reference example 1 of the present invention Side sectional view [FIG. 4] Detailed sectional view of the lower part of the heating chamber opening of the same high-frequency heating device [FIG. 5] Detailed sectional view of the lower part of the heating chamber opening of the conventional high-frequency heating device [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heating chamber 4 Cover 5 Door 8 Airframe 9 Magnetron 11 Propeller fan 12 Inverter 13 Projection 14 Bottom plate 20 Groove 22 Operation panel 23 Indentation 24 Intake hole

Claims (1)

前面に開口部を設けた被加熱物を収納し加熱する加熱室と、前記開口部に対向して開閉自在に設けた扉と、前記加熱室に結合された高周波発生装置や、前記高周波発生装置を駆動する電源部や、前記高周波発生装置や電源部を冷却する冷却手段などからなる機械室とを備え、前記機械室を前記加熱室の下部に配し、前記加熱室開口前面下部に位置する前記機械室の前面に略前記扉の幅にわたり略扉の厚みの突起を配するとともに、前記機械室前面に冷却装置の吸気孔を設け、前記突起は先端部と加熱室開口前面当接部との間に窪みを設け、かつ、先端部より前記吸気孔に対向する面に向け傾斜を設けて当該傾斜に沿って前記吸気孔へ外気を導入させる構成とした高周波加熱装置。A heating chamber that houses and heats an object to be heated with an opening provided on the front surface, a door that is openable and closable facing the opening, a high-frequency generator coupled to the heating chamber, and the high-frequency generator And a machine room comprising a cooling means for cooling the high-frequency generator and the power supply part, and the machine room is arranged in the lower part of the heating chamber and is located in the lower front part of the heating chamber opening. The front of the machine room is provided with a projection having a thickness substantially equal to the width of the door, and a cooling air intake hole is provided on the front of the machine room. The projection has a tip and a heating chamber opening front contact portion. A high-frequency heating apparatus having a configuration in which a recess is provided between the two and a slope is provided from a tip portion toward a surface facing the intake hole, and outside air is introduced into the intake hole along the slope .
JP17106398A 1998-06-18 1998-06-18 High frequency heating device Expired - Fee Related JP3931431B2 (en)

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JP3931431B2 true JP3931431B2 (en) 2007-06-13

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JP5532975B2 (en) * 2010-02-01 2014-06-25 パナソニック株式会社 Cooking equipment
JP2015053245A (en) * 2012-10-15 2015-03-19 アイリスオーヤマ株式会社 Electromagnetic cooker

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