CN1704651A - Microwave oven - Google Patents

Abstract

This invention discloses a microwave oven, which comprises a frame case, a cavity inside the frame case forming the heating room; the arris part in the rear of the cavity forms circular arc structure and in the front of one lateral it has several air inlet holes; the waveguide is set in the lateral space of the cavity in the casing to guide microwave; the magtron is set inside the waveguide emitting microwave, and in the inner of the cavity it has a hood whose front is installed in the surface of the waveguide, and the rear forms the same extended structure with the arris structure of the cavity. Said invention improves the structure of the hood, making the inner wall where supplies microwave separating from the heating room by the hood, so the foreign matter created from the heating room will not inlet the magtron.

Description

Micro-wave oven

Technical field

The present invention relates to a kind of micro-wave oven, particularly relate to a kind of microwave oven that has possessed the heating clamber that does not have corner angle.

Background technology

Usually, micro-wave oven is that (per second is about 2,450MHz) is heating source, by upsetting the molecules align of food, utilizes the electrical installation of the frictional heat heat food between the molecule with high frequency.

Such micro-wave oven is made of fuselage 10 that has possessed front panel 11, shell 12, rear board 13 and the electric control chamber that constitutes the cavity 20 of heating clamber and be provided with various electronic components shown in Fig. 1 and Fig. 2 a.

Preceding end housing that constitutes fuselage 10 front structures and the fire door 14 that can open or close cavity 20 inside are installed on the front panel 11.

Shell 12 is protected cavity 20 and electric control chamber with front panel 11 and rear board 13 in two sides that constitute fuselage 10 and end face.

Be provided with the magnetron 31 of launched microwave in the inside of electric control chamber; High-tension high-tension transformer 32 is provided for magnetron 31; Be used to cool off the Air Blast fan 33 of fuselage 10 inner various electrical equipments and the various parts such as fan electromotor 34 that drive Air Blast fan 33.

Fan electromotor 34 is fixedly mounted on the rear board 13, is provided with screen board 35 around Air Blast fan 33, guides flowing of air.

The lateral surface of cavity 20 is provided with the waveguide 36 of guiding microwave, and the front portion structure of magnetron 31 is arranged on the inside of waveguide 36.

For radiated microwaves, the side that it installs the cavity 20 of waveguide 36 communicates with the inner space of waveguide 36, and the medial surface of cavity 20 is provided with the guard shield 40 that seals the part that communicates.

The main effect of guard shield 40 is to prevent that food slag or wet goods foreign matter from entering the inside of magnetron 31.

Therefore but the structure of this guard shield 40 just adopts simple flat plate type structure, can't continue use when the change of shape of cavity 20.

For example, shown in Fig. 2 b, when cavity 20 crooked or when forming circular configuration, there is the space in the medial surface of guard shield 40 and cavity 20 because of pasting mutually completely, has lost the space of a part of heating clamber thus in the part that waveguide 36 is set.

Particularly, under above-mentioned situation, will inevitably need change the position of the air ostium 21 of cavity 20 sides.

Moreover, because the existence in gap, the food slag that produces in the gastronomical process will flow into the inside of magnetron 31 easily.

Summary of the invention

Technical problem to be solved by this invention is, provides that a kind of to possess the shape that microwave oven cavity is arranged corresponding with the shape of guard shield 40, prevents that foreign matter from entering the micro-wave oven of the structure of magnetron inside.

The technical solution adopted in the present invention is: a kind of micro-wave oven comprises: the fuselage that constitutes outward appearance; Be arranged on the cavity of the formation heating clamber in the fuselage, the corner angle at the rear of cavity two sides partly form arc-shaped structure and are formed with most air ostiums in the place ahead of a side; Be arranged in the fuselage and be positioned at the cavity side the space, guide the waveguide of microwave; Be arranged on the magnetron of the internal emission microwave of waveguide; Be provided with its place ahead part in the inboard of cavity and be close on the face that is installed in the installation waveguide, the end at its rear forms the guard shield with extended structure identical with the angular structures of cavity and constitutes.

By above explanation as can be known, improved the structure of guard shield among the present invention, provide the position of microwave to separate by guard shield and heating clamber thus in the internal face of cavity, the various foreign matters that produce in the inside of heating clamber can not enter the inside of magnetron thus.And, utilize the shape of guard shield of the present invention, can farthest reduce to install the space loss of the heating clamber that guard shield causes.Avoided the air ostium of guard shield closed cavity simultaneously.

Description of drawings

Fig. 1 is a micro-wave oven decomposition texture schematic diagram in the past;

Fig. 2 a and Fig. 2 b are the floor map of micro-wave oven internal structure example in the past;

Fig. 3 is the decomposition texture schematic diagram of micro-wave oven embodiment of the present invention;

Fig. 4 is the floor map of micro-wave oven embodiment internal structure of the present invention;

Fig. 5 is the planar structure schematic diagram of second embodiment of micro-wave oven of the present invention;

Fig. 6 is the planar structure schematic diagram of the 3rd embodiment of micro-wave oven of the present invention.

Wherein:

130: rear board 200: cavity

210: air ostium 310: magnetron

360: waveguide 400: guard shield

410: extended structure

The specific embodiment

Below, with reference to embodiment detailed describe of Fig. 3 to Fig. 6 for micro-wave oven of the present invention.

As shown in Figure 3, Figure 4, the micro-wave oven in the embodiments of the invention is made of fuselage 10, cavity 200, waveguide 360, magnetron 310 and guard shield 400 haply.

Fuselage 10 constitutes the outward appearance of micro-wave oven, comprising: the rear board 130 that forms the front panel 11 of Facad structure, the shell 12 that constitutes two sides and end face, formation back structure constitutes.

Constituting on the rear board 130 of fuselage 10, be not protruding to backward corresponding to the position of the rear end that cavity 200 is installed and collide with the back of cavity 200.Thus, formed the space between plate 130 and cavity 200 back in the back, the main effect in this space is to make cavity 200 inner air of discharging circulations in fuselage 10 glibly.

Cavity 200 is arranged in the lateral space in the fuselage haply, and inside possessed heating clamber, and when observing in the plane, its rear side is that benchmark has bent to semicircular structure haply with the central part.

On the two sides of cavity 200, be respectively arranged with several air ostiums 210 and the air tap hole 220 that communicate with heating clamber in the cavity 200.

Each air ostium 210 is positioned at the place ahead that cavity 200 is provided with that side of electric control chamber, and each air tap hole 220 is arranged on the rear of the another side of cavity 200.

Waveguide 360 is arranged on another space of fuselage 10, that is, be arranged in the space of electric control chamber and be installed on the side of cavity 200, plays the effect that microwave is guided to heating clamber inside.Waveguide 360 is installed in the central part (or rear side position) that is positioned at cavity 200 haply.

Certainly, make waveguide 360 the place ahead, be arranged on the side of cavity 200 of planar structure, help the formation of waveguide 360 more near cavitys 200.

But under above-mentioned situation, the front space that forms the space of electric control chamber will reduce accordingly, therefore bread baker can't be set, and the auxiliary equipment of coffee machine etc. is unfavorable for the exploitation of multifunctional product.

Therefore, should and be installed in the rear that waveguide 360 interior magnetrons 310 are arranged on electric control chamber with waveguide 360, for this reason in an embodiment of the present invention, waveguide 360 is positioned at middle position or its rear of the side of cavity 200 at least.

Magnetron 310 is arranged on the space that has formed electric control chamber, and the one end is connected on the waveguide 360, launched microwave.

Guard shield 400 is in the inboard of cavity 200, and its front-end architecture is close to the face installation that waveguide 360 is installed, and end has formed the extended structure 410 identical with the arc edge structure of cavity 200 thereafter.

Particularly, the length of the extended structure 410 of guard shield 400 is longer, so that can surround the position that waveguide 360 is installed completely.

This mainly is in order to make guard shield 400 surround the position that waveguide 360 is set completely, to enter the inside of the magnetron 310 that is arranged on the waveguide 360 to prevent various foreign matters.

And the front end of guard shield 400 is arranged on the rear side at the position that is provided with air ostium 210 in cavity 200 sides, avoids guard shield 400 occluded air ostiums 210 thus.

The shape of the extended structure 410 of guard shield 400 of the present invention is not to be limited to above-mentioned a kind of shape.

As shown in Figure 5, when the both sides property at parts of edges and corners in the cavity 200 forms circular configuration, the extended structure 410 of guard shield 400 is obliquely installed up to the part that radian reduces from the part that radian increases, the end of extended structure 410 is close on the rear surface of cavity 200, can reduces the space loss of heating clamber thus.

As shown in Figure 6, when the both sides property at parts of edges and corners in the cavity 200 does not adopt circular configuration but adopts the structure of inclination, the extended structure 410 of guard shield 400 is close on the inclined plane of cavity 200.

Claims (3)

1. a micro-wave oven comprises: the fuselage (10) that constitutes outward appearance; Be arranged on the cavity (200) of the formation heating clamber in the fuselage (10), the corner angle at the rear of cavity (200) two sides partly form arc-shaped structure and are formed with most air ostiums (210) in the place ahead of a side; Be arranged in the fuselage (10) and be positioned at cavity (200) side the space, guide the waveguide (360) of microwave; Be arranged on the magnetron (310) of the internal emission microwave of waveguide (360); It is characterized in that be provided with its place ahead part in the inboard of cavity (200) and be close on the face that is installed in installation waveguide (360), the end at its rear forms the guard shield (400) with extended structure (410) identical with the angular structures of cavity (200) and constitutes.

2. micro-wave oven according to claim 1 is characterized in that, the rear end of the circular configuration of described guard shield (400) extends to and covers the position that waveguide (360) is installed fully.

3. micro-wave oven according to claim 1 is characterized in that, the anterior end of described guard shield (400) is installed in the rear at the position that is provided with air ostium (210).

Images