CN201294143Y

CN201294143Y - Microwave oven

Info

Publication number: CN201294143Y
Application number: CNU2008201758666U
Authority: CN
Inventors: 梁伟国
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-09-20
Filing date: 2008-10-27
Publication date: 2009-08-19
Anticipated expiration: 2018-10-27
Also published as: CN201294142Y

Abstract

The utility model relates to a microwave oven, which comprises a high-voltage transformer, wherein the high-voltage transformer comprises a transformer framework, a primary winding, a secondary winding and a filament winding, wherein the secondary winding comprises a film type conductor layer and at least a film type insulating layer, and the film type conductor layer and the film type insulating layer can be coiled into a film type winding after being laminated, the film type winding is sleeved on the transformer framework, wherein one end of the film type conductor layer is a grounding end. The microwave oven has reasonable design, can increase the output of a microwave oven transformer by one time and reduce the heating power of the transformer, the film type conductor layer is used to increase the voltage endurance among windings and between the winding and the framework, and the shape of the transformer framework is of an E I shape, or D shape or I shape, etc.

Description

A kind of microwave oven

Technical field

The utility model relates to a kind of microwave oven.

Background technology

The high-tension transformer of existing microwave oven generally adopts magnetic-leakage type EI sheet metal skeleton and copper cash or aluminum steel to form as winding, be subject to the reason of the class of insulation of winding, about secondary general output 2000VAC of high voltage transformer of microwave oven, therefore have a half-wave voltage-multiplying circuit in the secondary back of microwave oven, high voltage transformer of microwave oven charges to the electric capacity in the half-wave voltage-multiplying circuit earlier in the half period of a sine wave, output when utilizing other half reversal periods of high-tension transformer then, the voltage that stack had originally charged about electric 4000VAC of electric capacity composition makes its work to magnetron, such high voltage transformer of microwave oven has only half period to power to magnetron in a sine wave period, can not effectively utilize transformer, and the power output difference is very big in the front and back half period of transformer in a sine wave, causes transformer heating itself serious.

Summary of the invention

Therefore, the purpose of this utility model be to provide a kind of make transformer can be directly at secondary output 4000VAC and do not need to increase the microwave oven of half-wave voltage-multiplying circuit.

To achieve these goals, the utility model adopts following first technical scheme:

A kind of microwave oven, comprise high-tension transformer, high-tension transformer comprises transformer framework, elementary winding, secondary winding and Filament Winding again, described secondary winding comprises a film-type conductor layer and at least one film-type insulating barrier, be rolled into the film-type winding after film-type conductor layer and film-type insulating barrier are stacked together, the film-type winding is set on the transformer framework, and wherein film-type conductor layer one end is an earth terminal.

Above-mentioned purpose also can be done further perfect by the following technical programs:

Described film-type conductor layer and film-type insulating barrier are wrapped in earlier and form the film-type winding on the hollow sleeve, and sleeve is set on the transformer framework again.

The shape of described transformer framework can be " EI " shape or " I " shape or " D " shape.

This transformer production is fairly simple, can be inserted in winding in the skeleton again on a working of plastics earlier according to the production technology of existing capacitor; Also can be directly winding on the magnetic conduction skeleton, when the magnetic conduction skeleton is metal, can be insulating barrier as the bottom that contacts with skeleton, then on transformer framework, if metal level is as with bottom that skeleton contacts the time, can allow the long a little point of insulating barrier, so as insulating barrier earlier on the skeleton surface around a circle or above as insulation, again on transformer framework.

The utility model is reasonable in design, can make the output that micro-wave oven transformer doubles and reduce the caloric value of transformer, the film-type conductive layer is used to improve withstand voltage between each winding and between winding and the skeleton, and the transformer framework shape can be " EI " shape or " D " shape or " I " shape etc.

Description of drawings

Fig. 1 is the structural principle schematic diagram of embodiment 1;

Fig. 2 is the transformer device structure schematic diagram of embodiment 1;

Fig. 3 is the A-A sectional stretch-out view;

Fig. 4 is the transformer device structure schematic diagram of embodiment 2;

Fig. 5 is the B-B sectional stretch-out view of embodiment 2.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

Embodiment 1, in conjunction with Fig. 1 to Fig. 3, a kind of microwave oven, high-tension transformer 1, magnetron 2, high-tension transformer 1 comprises transformer framework 4, elementary winding 5, secondary winding 6 and Filament Winding 7 again, two inputs of elementary winding 5 are connected with power supply, secondary winding 6 one ends and transformer framework 4 ground connection, the other end is connected with the input of Filament Winding 7 with magnetron 2, the output voltage at secondary winding two ends makes magnetron can produce same power output on the basis of saving a half-wave voltage-multiplying circuit about 4000VAC.

Transformer framework 4 is EI skeleton commonly used, and each winding is located on the different diametric planes of the same horizontal branch of transformer framework, and elementary winding 5 and Filament Winding 7 are open circuit with transformer framework.Secondary winding 6 one outputs are connected with transformer framework.

Elementary winding 5, secondary winding 6 and lamp line winding 7 are to be that conductor 80, another side are that film-type conductive layer 8 that insulator 81 is formed is wrapped on the transformer framework 4 and forms by one side respectively, and conductor 80 is in the metal formation on insulator 81 surfaces by spraying or plating.

Embodiment 2, in conjunction with Fig. 4 and Fig. 5, the difference of embodiment 2 and embodiment 1 is that elementary winding 5, secondary winding 6 and Filament Winding 7 are to be wrapped on the transformer framework 4 after stacked together by an independent film-type conductor 80 and film-type insulator 81 respectively to form.

Claims

1, a kind of microwave oven, comprise high-tension transformer, high-tension transformer comprises transformer framework, elementary winding, secondary winding and Filament Winding again, it is characterized in that: described secondary winding comprises a film-type conductor layer and at least one film-type insulating barrier, be rolled into the film-type winding after film-type conductor layer and film-type insulating barrier are stacked together, the film-type winding is set on the transformer framework, and wherein film-type conductor layer one end is an earth terminal.

2, microwave oven according to claim 1 is characterized in that: described film-type conductor layer and film-type insulating barrier are wrapped in earlier and form the film-type winding on the hollow sleeve, and sleeve is set on the transformer framework again.

3, microwave oven according to claim 1 and 2 is characterized in that: the shape of described transformer framework can be " EI " shape or " I " shape or " D " shape.