GB1001904A - Improvements in or relating to microwave heating apparatus - Google Patents

Improvements in or relating to microwave heating apparatus

Info

Publication number
GB1001904A
GB1001904A GB29845/62A GB2984562A GB1001904A GB 1001904 A GB1001904 A GB 1001904A GB 29845/62 A GB29845/62 A GB 29845/62A GB 2984562 A GB2984562 A GB 2984562A GB 1001904 A GB1001904 A GB 1001904A
Authority
GB
United Kingdom
Prior art keywords
magnetron
casing
oven
microwave
aug
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
GB29845/62A
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.)
Litton Industries Inc
Original Assignee
Litton Industries 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 Industries Inc filed Critical Litton Industries Inc
Publication of GB1001904A publication Critical patent/GB1001904A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H05B6/74—Mode transformers or mode stirrers
    • H05B6/745—Rotatable stirrers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B9/00—Generation of oscillations using transit-time effects
    • H03B9/01—Generation of oscillations using transit-time effects using discharge tubes
    • H03B9/10—Generation of oscillations using transit-time effects using discharge tubes using a magnetron
    • 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
    • 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
    • H05B6/6402—Aspects relating to the microwave cavity

Abstract

1,001,904. Magnetrons; transformers. LITTON INDUSTRIES Inc. Aug. 3, 1962 [Aug. 14, 1961], No. 29845/62. Headings H1D and H1T. [Also in Divisions H3, H4 and H5]. A magnetron microwave generator 28, Fig. 1, for a microwave oven is housed along with the magnetron field coils 50, 52 and, optionally, other associated supply circuit components, including an auto-transformer 38, within a single casing 14 mounted externally of the oven wall 24; the casing 14 is of magnetic material and provides a magnetic yoke for the magnetron coils 50, 52. The curved extensions 106, 108, Fig. 3, on the polepieces 102, 104 are insulated from the casing by insulating spacers 110, 112. The magnetron which is of the radial vane type with ring straps 88, 90 has a beryllium oxide envelope 76 with conductive end caps 72, 74 between which the cathode helix 92 is secured by screws 94, 96. The casing is filled with oil for cooling and includes a bellows for taking up expansion of the oil. The unit also includes an electromagnetic vibrator 124, Fig. 1, coupled to the magnetron magnetic structure for vibrating the microwave coupler 128 extending into the oven aperture. The magnetron field coils also serve as smoothing chokes in the magnetron power supply circuit. In another embodiment the auto-transformer has a D- shaped magnetic core, the linear limb of the D extending diametrically across the casing 14.
GB29845/62A 1961-08-14 1962-08-03 Improvements in or relating to microwave heating apparatus Expired GB1001904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US131266A US3265850A (en) 1961-08-14 1961-08-14 High frequency heating generator for microwave ovens

Publications (1)

Publication Number Publication Date
GB1001904A true GB1001904A (en) 1965-08-18

Family

ID=22448683

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29845/62A Expired GB1001904A (en) 1961-08-14 1962-08-03 Improvements in or relating to microwave heating apparatus

Country Status (3)

Country Link
US (1) US3265850A (en)
DE (1) DE1295112B (en)
GB (1) GB1001904A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366769A (en) * 1964-12-11 1968-01-30 Philips Corp High frequency heating apparatus
US3413559A (en) * 1964-12-11 1968-11-26 Litton Prec Products Inc Transformer reset circuit for microwave oven
US3396342A (en) * 1965-04-23 1968-08-06 Advance Transformer Co Power supply circuit for continuous wave magnetron operated by pulsed direct current
US3876956A (en) * 1968-06-25 1975-04-08 Melvin L Levinson Regulated power supply circuit for a heating magnetron
GB8925000D0 (en) * 1989-11-06 1990-05-30 Eev Ltd Magnetrons

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2145735A (en) * 1936-01-29 1939-01-31 Gen Electric Short wave radio transmitter
US2450629A (en) * 1944-03-14 1948-10-05 Gen Electric Ultra high frequency magnetron generator
US2648772A (en) * 1949-02-15 1953-08-11 Raytheon Mfg Co Magnetron control circuits
US2750565A (en) * 1952-09-13 1956-06-12 Raytheon Mfg Co Altimeter modulators
US2909635A (en) * 1957-07-29 1959-10-20 Raytheon Co Electronic oven systems
US2979671A (en) * 1959-02-27 1961-04-11 Raytheon Co Magnetron current control systems

Also Published As

Publication number Publication date
DE1295112B (en) 1969-05-14
US3265850A (en) 1966-08-09

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