EP0110364B1 - Four à micro-ondes avec paroi commune pour enveloppe et cavité - Google Patents

Four à micro-ondes avec paroi commune pour enveloppe et cavité Download PDF

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Publication number
EP0110364B1
EP0110364B1 EP83111895A EP83111895A EP0110364B1 EP 0110364 B1 EP0110364 B1 EP 0110364B1 EP 83111895 A EP83111895 A EP 83111895A EP 83111895 A EP83111895 A EP 83111895A EP 0110364 B1 EP0110364 B1 EP 0110364B1
Authority
EP
European Patent Office
Prior art keywords
cavity
oven
metal sheet
microwave oven
wrap
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
Application number
EP83111895A
Other languages
German (de)
English (en)
Other versions
EP0110364A1 (fr
Inventor
Ronald W. Millman
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.)
Northrop Grumman Guidance and Electronics Co Inc
Original Assignee
Litton Systems Inc
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 Litton Systems Inc filed Critical Litton Systems Inc
Priority to AT83111895T priority Critical patent/ATE25799T1/de
Publication of EP0110364A1 publication Critical patent/EP0110364A1/fr
Application granted granted Critical
Publication of EP0110364B1 publication Critical patent/EP0110364B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/02—Stoves or ranges heated by electric energy using microwaves
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6426—Aspects relating to the exterior of the microwave heating apparatus, e.g. metal casing, power cord

Definitions

  • This invention relates to the construction of microwave ovens and especially to the construction of the oven cavity and outer wrap.
  • microwave ovens because of the need to contain microwave frequency energy in a controlled fashion, almost all microwave ovens heretofore known include a discrete, box-like element referred to as the cooking cavity, or simply cavity.
  • the cavity was secured into some kind of frame which housed the remainder of the oven operating components, the entire assembly being enclosed in a decorative outer shell, called a wrap.
  • a microwave oven of the aforementioned kind is known from US-A-4 192 431. Due to the aforementioned structure, the oven is rather voluminous and its assembly is rather expensive.
  • the object of the present invention to provide a microwave oven which can be realised with substantial manufacturing economy and with comparatively reduced outer dimensions.
  • the present invention provides for the constructions of a microwave oven, having a combined oven cavity and wrap.
  • a single formed metal sheet is folded to form an oven cavity which simultaneously provides one side wall and a major portion of the top and bottom walls of the outer wrap.
  • a component section is added to the cavity to complete the other side wall and the remaining portion of the top and bottom of the wrap.
  • a front and back panel are added to complete the construction.
  • the cavity portion and the front and back panels are assembled by crimping techniques thereby eliminating the need for other forms of microwave tight sealing of the oven. Joining the ends of the first formed metal sheet along a crimped seam may provide a microwave tight sealing of the oven cavity against the components compartment.
  • Figure 1 is an exploded perspective view showing the microwave oven construction of the present invention.
  • the oven cavity 10 is formed from a single flat metal sheet 1 which has been formed and folded to construct a generally box-like cavity.
  • the cavity 10 includes top wall 20, side wall 21, bottom wall 22 and side wall portions 23 and 24 each having flanges 18 and 19.
  • side wall portions 23 and 24 are joined together along edge 26 by means of a crimp seam whereby the side wall portions are folded upon one another to form a secure folded seam of the type illustrated in Figures 3 and 4.
  • An aperture 25 is provided in the side wall 24, over which is mounted a waveguide 15.
  • a components compartment 12 consisting of a generally U-shaped metal sheet (2) having an access portion and flanges 13 and 14 is attached to the cavity element 10 by spotwelding along the flanges 13 and 14.
  • Back panel 17 and front panel 16 are now added to the cavity/component compartment assembly.
  • the front panel 16 is initially spotwelded to the flanges 18.
  • the back panel 17 is initially spotwelded to the flanges 19.
  • a crimp seam is then formed about the entire periphery of front panel 16 and back panel 17 crimping the front and back panels to the cavity element 10 and the component compartment 12. After the crimping operation the microwave oven structure is shown in Figure 2 results. The details of the crimp seam are shown in Figures 3 and 4.
  • an access panel (not shown) is placed over the component compartment 12 to close it.
  • the access panel may be attached by means of tamper-proof fasteners.
  • a microwave oven door (not shown) is then mounted to a front panel 16 to complete the oven construction.
  • the metal sheet 1 from which the cavity element 10 is formed can be finished and decorated as desired.
  • the exterior side of top wall 20 and side wall 21 may be painted some chosen color or may be covered with woodgrain vinyl.
  • the interior side of the same top wall 20 and side wall 21, as well as bottom wall 22 may all be paintad a different color, such as white, for the interior of the oven cavity.
  • the oven cavity and outer wrap are both provided by the same single metal sheet and that there is no separate cavity and/or outer wrap portion.
  • the exterior of component compartment 12 will of course be finished in the same manner as the exterior portion of the cavity element 10.
  • the construction described and illustrated provides for an extremely simple microwave oven construction comprising a very small number of individual parts.
  • the use of the common cavity wall and outer wrap reduces the materials used in the oven and the construction complexity to a minimum, and the use of crimping techniques to assemble the components greatly reduces the labor required in assembly as compared to previously known constructions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Ovens (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Threshing Machine Elements (AREA)
  • Confectionery (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)

Claims (2)

1. Cavité et enveloppe combinées d'un four à micro-ondes comprenant:
(a) une première tôle formée (1) pliée en une cavité (10) analogue à une caisse à extrémités ouvertes;
(b) une seconde tôle formée (2) attachée à une première paroi latérale de ladite cavité (10) pour former un compartiment à composants (12);
(c) un premier panneau (16) s'étendant sensiblement en travers à la fois de ladite cavité (10) et dudit compartiment à composants (12) et formant un devant de four, et,
(d) un second panneau (17) s'étendant sensiblement à travers à la fois ladite cavité (10) et ledit compartiment à composants (12) et formant un derrière de four;
(e) lesdits premier et second panneaux (16, 17) étant joints à ladite cavité (10) et audit compartiment à composants (12) suivant un joint serti continu afin de former un ensemble unitaire, de manière que ladite première tôle formée (1) forme à la fois les parois intérieures (20-24) de la cavité et des parties de l'enveloppe extérieure du four.
2. Structure selon la revendication 1, dans laquelle les extrémités de ladite première tôle formée (1) sont jointes suivant un joint serti.
EP83111895A 1982-11-29 1983-11-28 Four à micro-ondes avec paroi commune pour enveloppe et cavité Expired EP0110364B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83111895T ATE25799T1 (de) 1982-11-29 1983-11-28 Mikrowellenherd mit gemeinsamer wandung fuer aussenhuelle und bratrohr.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US44529182A 1982-11-29 1982-11-29
US445291 1982-11-29

Publications (2)

Publication Number Publication Date
EP0110364A1 EP0110364A1 (fr) 1984-06-13
EP0110364B1 true EP0110364B1 (fr) 1987-03-04

Family

ID=23768341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83111895A Expired EP0110364B1 (fr) 1982-11-29 1983-11-28 Four à micro-ondes avec paroi commune pour enveloppe et cavité

Country Status (10)

Country Link
EP (1) EP0110364B1 (fr)
KR (1) KR840007169A (fr)
AT (1) ATE25799T1 (fr)
AU (1) AU576741B2 (fr)
CA (1) CA1203580A (fr)
DE (2) DE110364T1 (fr)
DK (1) DK161481C (fr)
HK (1) HK59488A (fr)
IE (1) IE54739B1 (fr)
ZA (1) ZA838604B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR930004536B1 (ko) * 1987-07-31 1993-05-27 마쯔시다덴기산교 가부시기가이샤 전자레인지의 가열상자
JPH074405Y2 (ja) * 1989-04-25 1995-02-01 シャープ株式会社 加熱調理器の枠体構造
JP3321845B2 (ja) * 1992-09-30 2002-09-09 松下電器産業株式会社 オーブン
KR19980011483U (ko) * 1996-08-20 1998-05-25 김광호 전자렌지의 조리실 형성장치
KR200229365Y1 (ko) * 2000-12-28 2001-07-19 엘지전자 주식회사 전자레인지의 장착플레이트 장착구조
KR100437381B1 (ko) 2000-12-28 2004-06-25 주식회사 엘지이아이 후드겸용 전자레인지의 전장부품 냉각구조

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2889414A (en) * 1954-01-11 1959-06-02 Gen Dynamics Corp Combination recording heads
DE1143225B (de) * 1961-09-12 1963-02-07 Telefunken Patent Rotierende Magnetkopfanordnung zur Abtastung von breitbandigen Signalen, insbesondere von Fernsehsignalen
CA923207A (en) * 1971-01-04 1973-03-20 R. Gooch Beverley Interchannel shield for multichannel rotary transformer
US4192431A (en) * 1977-10-25 1980-03-11 General Motors Corporation Microwave oven single wall construction
US4282416A (en) * 1978-08-21 1981-08-04 General Electric Co. Unitized structure for a microwave oven
US4277809A (en) * 1979-09-26 1981-07-07 Memorex Corporation Apparatus for recording magnetic impulses perpendicular to the surface of a recording medium
JPS56165918A (en) * 1980-05-23 1981-12-19 Ricoh Co Ltd Vertical magnetic recorder and reproducer
JPS5798116A (en) * 1980-12-09 1982-06-18 Matsushita Electric Ind Co Ltd Vertical magnetic recording and reproducing head apparatus
CA1184458A (fr) * 1981-06-16 1985-03-26 Noboru Igarashi Chambre d'appareil de cuisson

Also Published As

Publication number Publication date
AU576741B2 (en) 1988-09-08
ATE25799T1 (de) 1987-03-15
IE832658L (en) 1984-05-29
KR840007169A (ko) 1984-12-05
DK543983D0 (da) 1983-11-28
ZA838604B (en) 1985-06-26
DK161481C (da) 1991-12-16
HK59488A (en) 1988-08-12
IE54739B1 (en) 1990-01-17
DK543983A (da) 1984-05-30
DE3370118D1 (en) 1987-04-09
DK161481B (da) 1991-07-08
AU2145483A (en) 1984-06-07
EP0110364A1 (fr) 1984-06-13
DE110364T1 (de) 1984-12-06
CA1203580A (fr) 1986-04-22

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