CN1779349A

CN1779349A - Microwave oven with quartz tube heater

Info

Publication number: CN1779349A
Application number: CNA2004100728960A
Authority: CN
Inventors: 陈再明
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2004-11-26
Filing date: 2004-11-26
Publication date: 2006-05-31

Abstract

There is disclosed a microwave oven having a quartz tube heater, which comprises a cooking cavity formed in one side space in the oven, a cooking cavity assembly of electric control chamber formed in the other side space and a door disposed in the front of the cooking cavity assembly for opening and closing the cooking cavity. It also includes a convection chamber having at least one or more quartz tube heaters and a convection fan inside disposed at the back of the cooking cavity assembly.

Description

Micro-wave oven with quartz tube heater

Technical field

The present invention relates to a kind of micro-wave oven.Particularly relate to a kind of micro-wave oven with quartz tube heater.

Background technology

Generally, micro-wave oven is that (per second is about 2,450MHz) is heating source, the intermolecular chafing that rubs that is taken place by the molecules align that confuses food and arrange the utensil of food with high frequency waves.

Fig. 1 is the decomposing schematic representation of general structure of the micro-wave oven of prior art, and Fig. 2 is the planar structure schematic diagram of the internal structure of Fig. 1.

As shown in Figure 1, existing micro-wave oven comprises: by front panel 11 and rear board 13 and the cooking cavity assembly 10 that constitutes; Cooking cavity 12 in the 10 inner sides formation of cooking cavity assembly; Be formed on cooking cavity assembly 10 inner opposite sides, be provided with the electric control chamber 14 of various electric components; Be arranged on the shell 20 in the outside of cooking cavity assembly 10.

Front panel 11 is installed in the front of cooking cavity assembly 10, constitutes the front of cooking cavity assembly 10, and the front of front panel 11 is provided with the door 30 that is used to open and close cooking cavity 12 inside.

Shell 20 form micro-wave ovens two sides and above outward appearance, and cooking cavity 12 and electric control chamber 14 are protected from the outside with front panel 11 and rear board 13.

The a plurality of intercommunicating pore 13a of formation that are communicated with cooking cavity 12 inner spaces to the central part greatly of plate 13 in the back, in the back the back of plate 13 be provided with and rear board 13 between have the convection cell 40 in any space.

In the space that convection cell 40 is had, be provided with heater 41, and the convection fan 42 that makes the hot gas convection current in cooking cavity 12 that takes place from heater 41 is installed, and being equipped with in the back of convection cell 40 in order to drive convection fan 42, and the motor 43 that is connected with the axle of convection fan 42.

Be installed with the convection cell cover 50 of parcel convection cell 40 and motor 43 in the back on the plate 13, convection cell 40 and motor 43 are protected from the outside.

The back of convection cell cover 50 is formed with a plurality of air suction inlet 50a that can flow into air from the outside.

Comprise the magnetron 14a that generates microwave and supply with high-tension high-tension transformer 14b by installation on the electric control chamber 14 to magnetron 14a, and the blowing fan 14c of the various electric components of cooling electric control chamber 14 inside and drive the fan electromotor 14d of blowing fan 14c.

Fan electromotor 14d is fixedly mounted on the inner face of rear board 13 1 sides, and around blowing fan 14c wind deflector is installed, thereby the guiding air is mobile.

But aforesaid existing micro-wave oven is in the face convection cell 40 heater 41 to be set thereafter, adopts the metal heater of high price, therefore has the high problem of manufacturing cost.

In addition, when heater 41 was out of order, it was more to change the required expense of heater 41, therefore, causes the consumer discontented.

Summary of the invention

Technical problem to be solved by this invention is, a kind of quartz tube heater that is provided with in convection cell is provided, the radiant heat that the employing quartz ampoule takes place comes the inside in cooking chamber, when reducing cost, can improve the micro-wave oven with quartz tube heater of the hear resistance and the thermal efficiency.

The technical solution adopted in the present invention is: a kind of micro-wave oven with quartz tube heater comprises: form cooking cavity in an inner side space, form the cooking cavity assembly of electric control chamber in its opposite side space; Be arranged at the front side of cooking cavity assembly, open and close the door of cooking cavity; Also comprise: be arranged on the rear side of cooking cavity assembly, and its inside possesses at least more than one quartz tube heater, and convection fan, thereby the convection cell of high-temperature gas is provided to cooking cavity.

As mentioned above, provide the photothermal heater of generation of high temperature hot gas to adopt cheap quartz tube heater to cooking cavity inside among the present invention, thereby saved manufacturing expense.

Use quartz tube heater, because the characteristic of quartz ampoule, so it is strong to have hear resistance, can be fast hot fast cold, thus improved the thermal efficiency.

Description of drawings

Fig. 1 is the decomposing schematic representation of general structure of the micro-wave oven of prior art;

Fig. 2 is the planar structure schematic diagram of the internal structure of Fig. 1;

Fig. 3 is the decomposing schematic representation of the microwave oven of the embodiment of the invention;

Fig. 4 is the planar structure schematic diagram of the internal structure of Fig. 3.

Wherein:

110: cooking cavity assembly 111: front panel

112: cooking cavity 112a: the air ostium

112b: air tap hole 113: rear board

113a: intercommunicating pore 114: electric control chamber

114a: magnetron 114b: high-tension transformer

114c: blowing fan 114d: fan electromotor

120: shell 120a: the air tap

130: door 140: convection cell

141: heater 142: convection fan

143: convection fan motor 150: the convection cell cover

150a: air suction inlet

The specific embodiment

Below, describe as follows with reference to accompanying drawing to the exemplary embodiments of micro-wave oven of the present invention.

Fig. 3 is the decomposing schematic representation of the microwave oven of the embodiment of the invention, and Fig. 4 is the planar structure schematic diagram of the internal structure of Fig. 3.

As shown in Figure 3, Figure 4, the micro-wave oven of embodiments of the invention comprises: portion one side space is formed with cooking cavity 112 within it, is formed with the cooking cavity assembly 110 of electric control chamber 114 in the opposite side space; Be arranged on the back of cooking cavity assembly 110, and be provided with the convection cell 140 of quartz tube heater 141 and convection fan 142 in inside, thereby provide elevated temperature heat to cooking cavity 112; Be arranged at the front of cooking cavity assembly 110, be used to open and close the door 130 of cooking cavity 112.

Cooking cavity assembly 110 also includes front panel 111 and rear board 113; and the arranged outside of cooking cavity assembly 110 has two sides and the top outward appearance that constitutes micro-wave oven, and constitutes the shell 120 that cooking cavity 112 and electric control chamber 114 are protected from the outside with front panel 111 and rear board 113.

Be formed with a plurality of intercommunicating pore 113a that are communicated with cooking cavity 112 inner spaces on the rear board 113 in convection fan 142 the place aheads, the back of plate 113 is provided with convection cell 140 in the back, and and rear board 113 between be formed with space arbitrarily.

Convection fan 142 is arranged on the central interior of convection cell 140, quartz tube heater 141 should not have the setting of interfering with convection fan 142, so quartz tube heater 141 is separately positioned on the upside and the downside of convection fan 142, and has the in-line setting of length to transverse direction.

And, be equipped with in the back of convection cell 140 in order to drive convection fan 142, and the motor 143 that is connected with the axle of convection fan 142.

Be installed with the convection cell cover 150 that can wrap up convection cell 140 and motor 143 in the back on the plate 113, convection cell 140 and motor 143 are protected from the outside.

Be formed with a plurality of air suction inlet 150a that can flow into air on the trailing flank of convection cell cover 150 from the outside.

Be provided with in the electric control chamber 114 and comprise the magnetron 114a that generates microwave; Supply with high-tension high-tension transformer 114b to magnetron 114a; The blowing fan 114c of the various electric components of cooling electric control chamber 114 inside; Drive the fan electromotor 114d of blowing fan 114c.

Below, as follows to the action specific description of the micro-wave oven of the embodiments of the invention that as above constitute.

At first, the user has selected to carry out the function of convection current, at this moment quartz tube heater 141 heating and radio radiation heat, 142 rotations of motor 143 driving convection fans simultaneously.

At this moment, by each air suction inlet 150a on the trailing flank that is formed on convection cell cover 150, suck air outside after convection cell 140 inner spaces flow into, hot gas forced air supply in cooking cavity 112 of the high temperature in convection cell 140 is carried out the high temperature heat air to the cooking thing in the cooking cavity 112.

The hot gas of high temperature is the radiant heat that is generated by the heating of the quartz ampoule of quartz tube heater 141 and taking place, and quartz tube heater 141 hear resistances are extremely strong, and it is good therefore to have the thermal efficiency, and has the cold characteristics of speed heat speed.

When the user utilizes microwave to cook,, rotate blowing fan 114c by driving the fan electromotor 114d that is provided with in the electric control chamber 114 for the heat that magnetron 114a and high-tension transformer 114b are sent circulates to cooking cavity 112 inside.

Blowing fan 114c produces air suction during rotation, and the micro-wave oven air outside is sucked to the space that fan electromotor 114d and blowing fan 114c are installed from air suction inlet 113a.

Institute's inhaled air is subjected to the power that spues of blowing fan 114c and the guiding of wind deflector, flows to the position of the magnetron 114a installation of the interior volume that is arranged on electric control chamber 114, has absorbed the heat that is produced on the magnetron 114a, has fallen temperature for magnetron 114a.

Magnetron 114a is because generation to the microwave of the cooking food in the cooking cavity 112, therefore can produce a lot of heats simultaneously, so by the mobile heat of taking away of above-mentioned air.

The air that flows through magnetron 114a is to flow to the place ahead that forms electric control chamber 114, and each the air ostium 112a that continues to pass through to form on the cooking cavity 112 is to cooking cavity 112 inner inflows.

To cooking cavity 112 inner leaked-in airs, in cooking cavity 112 internal flows, smell that has taken place when having contained cooking food and moisture etc., and a plurality of air tap hole 112b that pass through to form on the cooking cavity 112 are to cooking cavity 112 outside outflows.

Going out air to cooking cavity 112 outer flow is that the air tap 120a that forms on the side by shell 120 discharges to the outside of micro-wave oven.

Though not shown, quartz tube heater 141 be also can be respectively on the left and right side of convection fan 142 to the setting of longitudinal direction in-line shape.

Claims

1. the micro-wave oven with quartz tube heater comprises: form cooking cavity (112) in an inner side space, form the cooking cavity assembly (110) of electric control chamber (114) in its opposite side space; Be arranged at the front side of cooking cavity assembly (110), open and close the door (130) of cooking cavity (112); It is characterized in that, also comprise: be arranged on the rear side of cooking cavity assembly (110), and its inside possesses at least more than one quartz tube heater (141), and convection fan (142), thereby the convection cell (140) of high-temperature gas is provided to cooking cavity (112).

2. the micro-wave oven with quartz tube heater according to claim 1 is characterized in that, described quartz tube heater is arranged on the side that is positioned at convection fan in the convection cell (140), and the position that does not relate to mutually with convection fan.

3. the micro-wave oven with quartz tube heater according to claim 2 is characterized in that, described quartz tube heater is separately positioned on the upper and lower side of convection fan, and laterally in-line setting.

4. the micro-wave oven with quartz tube heater according to claim 2 is characterized in that described quartz tube heater is separately positioned on the left and right side of convection fan, and vertically in-line setting.

5. the micro-wave oven with quartz tube heater according to claim 1 is characterized in that described convection fan is arranged at the central authorities of convection cell.