CN102072507B

CN102072507B - Radiating structure for electromagnetic oven

Info

Publication number: CN102072507B
Application number: CN 201110020227
Authority: CN
Inventors: 蔡才德; 高晖
Original assignee: Zhejiang Supor Electrical Appliances Manufacturing Co Ltd
Current assignee: Zhejiang Supor Electrical Appliances Manufacturing Co Ltd
Priority date: 2010-09-30
Filing date: 2011-01-18
Publication date: 2013-12-25
Anticipated expiration: 2031-01-18
Also published as: CN202168727U; CN102090838A; CN102072507A; CN202198404U; CN202154510U; CN102090838B

Abstract

The invention discloses a radiating structure for an electromagnetic oven. Radiating fins are fixed at an air outlet of a radiating fan; and an insulated gate bipolar translator (IGBT) and a bridge rectifier are fixed on the radiating fins and are arranged in a non-overlapped mode in front of the air outlet, so that the fan has higher radiating efficiency on the IGBT and the bridge rectifier, particularly when the IGBT and the bridge rectifier are transversely arranged in parallel. A contact surface between the IGBT and the bridge rectifier and the bottom wall of each radiating fin is set as a plane with the largest area, so that the IGBT and the bridge rectifier have the minimal thickness in the vertical direction. The conventional IGBT and bridge rectifier generally have the thickness of about 5mm only, so that the flatness of a complete electromagnetic oven can be realized. The heat dissipation of the flat electromagnetic oven is an important problem; therefore, when the IGBT and the bridge rectifier are 0 to 20mm away from the air outlet, wind power of the air outlet on a target heat source is more centralized, and the temperature rise of IGBT and the bridge rectifier is effectively reduced. Moreover, due to the arrangement mode, the whole height of the conventional electromagnetic oven product is reduced.

Description

The electromagnetic oven heat radiation structure

Technical field

The invention belongs to small household appliances field, kitchen, relate in particular to a kind of radiator structure of electromagnetic oven.

Background technology

Existing electromagnetic oven is when work, and itself does not produce naked light, and the heat that pan produces in heating process can be transmitted to the structures such as drum under body of heater or control circuit, and simultaneously, the IGBT structure of control circuit also can be sent a large amount of heat when work.In order to guarantee the normal operation of electromagnetic oven, these caloric requirements that are created in body of heater are discharged in time.For this reason, electromagnetic oven is typically provided with fan and inlet and outlet, and in traditional electromagnetic oven, all electronic components all are arranged on a control circuit board, are arranged in body of heater intricately.Therefore, cause the electromagnetic oven local temperature too high, the temperature rise in the electromagnetism furnace chamber is too high.And all electronic components concentrate and to arrange, height uneven, also cause electromagnetic oven temperature higher, on the whole comparatively heavy shortcoming.

For improving heat dispersion, fin is installed in electromagnetic oven, and higher-order of oscillation pipe IGBT is arranged on aluminium radiator fin, fin is fixed on control panel, its integral body is positioned over below coil panel, fan is positioned at side, the air inlet of fan is mainly by the bottom air intake, its heat radiation to IGBT is that the natural flow after same air intake is dispelled the heat, Chinese invention patent CN201652498U(is on 04 15th, 2010 in open day) a kind of heat abstractor of electromagnetic oven is provided, the inventor of this application proposes IGBT and Qiao Dui fits in the fin sidewall, the wind of fan can directly blow to IGBT and Qiao Dui is dispelled the heat.Because IGBT and bridge heap vertically fits in the fin sidepiece, can not realize ultra-thin product industrial design, and the wind direction of fan relies on drain pan that spigot surface is set to realize that guiding blows to IGBT and Qiao Dui, IGBT is positioned at the fan near-end, the bridge heap is positioned at the fan far-end, the bridge heap radiating effect of far-end is bad, affects electromagnetic oven work.

Summary of the invention

The essential technique problem that the present invention is intended to solve is to provide a kind of thickness low, the electromagnetic oven heat radiation structure of good heat dissipation effect.

For above technical problem, the corresponding technical solution scheme of the present invention is:

The electromagnetic oven heat radiation structure, comprise fin, higher-order of oscillation pipe IGBT, bridge heap and radiator fan, described fin is fixed in the air outlet of radiator fan, described higher-order of oscillation pipe IGBT and Qiao Dui are fixed on the diapire of fin, and the projection that higher-order of oscillation pipe IGBT and bridge pile up on air outlet plane of living in is not overlapping mutually.

Preferably, described higher-order of oscillation pipe IGBT and bridge pile up before air outlet to be laterally and are arranged in juxtaposition.

As further improvement of these options, the contact-making surface of higher-order of oscillation pipe IGBT and bridge heap and fin diapire is the plane of its area maximum.

As the further optimization to such scheme, higher-order of oscillation pipe IGBT and bridge heap are 0-100mm apart from radiator fan air outlet place distance.Wherein, distance is especially good when 0-20mm.

As further improvement of these options, be provided with dividing plate between described radiator structure and coil disc of electric stove, the heat dissipation wind channel of this radiator structure is separated mutually with the heat dissipation wind channel of coil disc of electric stove.

The fin of radiator of the present invention is copper cooling fin.Can be also the material of aluminium or Cu and Al combination, metal be as silver, or nonmetal as graphite preferably also can to select thermal conductivity.

Further, described radiator fan is turbofan.Relatively traditional radiator fan, turbofan can be exported larger air quantity, improving radiating effect under less space hold.

Compared with prior art, the air outlet of radiator fan is fixed in fin in the present invention, fixedly IGBT and Qiao Dui on fin, its position is nonoverlapping be placed in air outlet before, make fan higher to the radiating efficiency of the two, when particularly IGBT and bridge heap laterally are arranged in juxtaposition.

IGBT and bridge heap and the contact-making surface of fin diapire are made as to the plane of area maximum, IGBT and bridge heap fall layout for volt, make the two thickness of in the vertical direction reach minimum.The gauge of existing IGBT and bridge heap generally only has the 5mm left and right, can realize the flat thin of electromagnetic oven complete machine.The heat radiation of flat thin electromagnetic oven is a major issue, therefore IGBT and bridge heap apart from air outlet apart from when the 0-20mm, can be so that air outlet be more concentrated to the wind-force of target thermal source, effectively reduce the temperature rise of IGBT and bridge heap, and positioning means of the present invention have reduced the whole height of existing electromagnetic oven product.

The accompanying drawing explanation

Fig. 1 is the structural representation of embodiment of the present invention 1;

Fig. 2 is the structural representation of embodiment of the present invention 2;

Fig. 3 is the structural representation of another embodiment of the present invention;

Fig. 4 is the structural representation of embodiment of the present invention 3;

Fig. 5 is the structural representation of another embodiment of the present invention;

Fig. 6 is the structural representation of another embodiment of the present invention;

Fig. 7 is the structural representation of another embodiment of the present invention.

The specific embodiment

Below by the specific embodiment, technical solution of the present invention is further described.

Embodiment 1:

As shown in Figure 1, fin 2 is fixed in the air outlet of radiator fan 1, and higher-order of oscillation pipe IGBT4 and bridge heap 3 are fixed on the diapire of fin 2, and the contact-making surface of IGBT4 and bridge heap 3 and fin 2 diapires is the plane of its area maximum, forms and lies prostrate shape.Wherein, bridge heap 3 in the front of fin 2 diapires, has the one side of a plurality of radiator shutters with IGBT4.In Fig. 1, Figure 1A is the Facad structure figure of electromagnetic oven heat radiation structure, and Fig. 1 C is side view, and Fig. 1 D is top view.

Embodiment 2 is roughly the same with embodiment 1, and the bridge heap 3 that its difference is embodiment 2, and can be installed at the back side of fin diapire as shown in Figure 2 with IGBT4, and all relative Fig. 1 reverse side is upward for fan and fin.Wherein Fig. 2 A is the Facad structure figure of present embodiment, and Fig. 2 B is structure figure, and Fig. 2 C is side view, and Fig. 2 D is top view.

Embodiment 3: preferably IGBT4 and bridge heap 3 are placed in side by side to the air outlet of radiator fan 1, make its distance apart from air outlet in 20mm, as shown in Figure 4 apart from being 0.At this moment because the distance air outlet is near, make fan more effective to its heat radiation.Because fin 2, IGBT4, bridge are piled 3 equal close arrangement in air outlet, with the common evacuation of prior art, arrange and compare simultaneously, make blast larger, radiating efficiency further promotes.In the reality test, under common radiating mode, the equilibrium temperature of IGBT and bridge heap is 85 degrees centigrade of left and right, even higher while making flat thin design, and the equilibrium temperature of the flat thin electromagnetic oven thermal source IGBT in the present embodiment, at the 75-80 degree, well reached the purpose of efficiently radiates heat.

The fin of the present embodiment radiator is copper cooling fin.Fin is that a plurality of copper plates are welded.

Radiator fan is turbofan, is fixed in electromagnetic oven shell body.

Embodiment 1-3 is only several examples.In the claimed technical scheme of the present invention, fin and fan front or reverse side upward all can, IGBT and bridge heap also can be placed in front or the reverse side of fin diapire.IGBT and bridge heap all belong to the scope of protection of the invention apart from the distance of fan outlet in 0-100mm.Variety of way can be as shown in Fig. 3, Fig. 5, Fig. 6, Fig. 7.

In above-mentioned embodiment, fin is all over against fan outlet, and in actual applications, the two some distance that can stagger in vertical direction, as radiator fan blows to fin and IGBT, Qiao Dui simultaneously.

Improvement as above-mentioned embodiment, can also between described radiator structure and coil disc of electric stove, dividing plate be set, make the heat dissipation wind channel of this radiator structure separate mutually with the heat dissipation wind channel of coil disc of electric stove, thereby in the minimizing electromagnetic oven, (one is coil disc of electric stove to two main thermals source, one for IGBT and Qiao Dui) interfere with each other, the radiating efficiency of radiator fan in described radiator structure has also been improved in ad hoc air channel simultaneously.

In sum, after those of ordinary skill in the art reads file of the present invention, according to technical scheme of the present invention and technical conceive, without creative mental labour, make other various corresponding conversion scheme, all belong to the scope that the present invention protects.

Claims

1. equal thin electromagnetic oven heat radiation structure, comprise fin, higher-order of oscillation pipe IGBT, bridge heap and radiator fan, it is characterized in that described fin is fixed in the air outlet of radiator fan, described higher-order of oscillation pipe IGBT and Qiao Dui are fixed on the diapire of fin, and the projection that higher-order of oscillation pipe IGBT and bridge pile up on air outlet plane of living in is not overlapping mutually, described higher-order of oscillation pipe IGBT and bridge pile up before air outlet to be laterally and are arranged in juxtaposition, the contact-making surface of described higher-order of oscillation pipe IGBT and bridge heap and fin diapire is the plane of its area maximum, described higher-order of oscillation pipe IGBT and bridge heap are 0mm apart from radiator fan air outlet place distance, be provided with dividing plate between described radiator structure and coil disc of electric stove, the heat dissipation wind channel of this radiator structure is separated mutually with the heat dissipation wind channel of coil disc of electric stove, described fin is copper material, described radiator fan is turbofan.