CN102072507A

CN102072507A - Radiating structure for electromagnetic oven

Info

Publication number: CN102072507A
Application number: CN2011100202279A
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: 2011-05-25
Anticipated expiration: 2031-01-18
Also published as: CN102090838B; CN202198404U; CN202168727U; CN202154510U; CN102072507B; CN102090838A

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 is produced in heating process then can be transmitted to structures such as drum under the 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 operate as normal of electromagnetic oven, these caloric requirements that are created in the body of heater are in time discharged.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 the control circuit board, are arranged in the 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, and height uneven also causes the electromagnetic oven temperature higher, comparatively heavy on the whole shortcoming.

For improving heat dispersion, fin is installed in the electromagnetic oven, and higher-order of oscillation pipe IGBT is arranged on the aluminium radiator fin, fin is fixed on the control panel, its integral body is positioned over below the coil panel, fan is positioned at side, the air inlet of fan mainly is by the bottom air intake, its heat radiation to IGBT is to dispel the heat with flowing naturally behind the air intake, Chinese invention patent CN201652498U(was 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, and the wind of fan can directly blow to IGBT and Qiao Dui dispels the heat.Because IGBT and bridge heap vertically fit 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, influences 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.

At 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 the air outlet plane of living in does not overlap mutually.

Preferably, described higher-order of oscillation pipe IGBT and bridge pile up to be laterally before the air outlet 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 good especially when 0-20mm.

As further improvement of these options, be provided with dividing plate between described radiator structure and the 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 a copper cooling fin.Also can also can select thermal conductivity preferred metal such as silver for the material of aluminium or the combination of copper aluminium, or nonmetal as graphite.

Further, described radiator fan is a turbofan.Traditional relatively radiator fan, turbofan can be exported bigger air quantity under littler space hold, promote radiating effect.

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

IGBT and the bridge heap and the contact-making surface of fin diapire are made as the plane of area maximum, and promptly IGBT and bridge heap falls layout for volt, makes the two thickness of in the vertical direction reach minimum.The gauge of existing IGBT and bridge heap generally has only about 5mm, 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 are piled apart from the distance of air outlet 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.

Description of drawings

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, promptly forms and lies prostrate shape.Wherein, bridge heap 3 and IGBT4 promptly have the one side of a plurality of radiator shutters in the front of fin 2 diapires.Among Fig. 1, Figure 1A is the Facad structure figure of electromagnetic oven heat radiation structure, and Fig. 1 C is a side view, and Fig. 1 D is a vertical view.

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

Embodiment 3: preferably IGBT4 and bridge heap 3 are placed side by side the air outlet of radiator fan 1, promptly make its apart from the distance of air outlet in 20mm, as shown in Figure 4 apart from being 0.At this moment owing near, make fan more effective to its heat radiation apart from air outlet.Owing to fin 2, IGBT4, bridge are piled 3 equal close arrangement in air outlet, compare with the common evacuation layout of prior art simultaneously, make blast bigger, radiating efficiency further promotes.In the reality test, the equilibrium temperature of IGBT and bridge heap is about 85 degrees centigrade under the common radiating mode, when making flat thin design even higher, 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 present embodiment radiator is a copper cooling fin.Fin is that a plurality of copper plates are welded.

Radiator fan is a turbofan, is fixed in the electromagnetic oven housing.

Embodiment 1-3 only is several examples.In the claimed technical scheme of the present invention, fin and fan front or reverse side up all can, IGBT and bridge heap also can be placed in the 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 Fig. 3, Fig. 5, Fig. 6, shown in Figure 7.

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

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 (one is coil disc of electric stove to two main thermals source in the minimizing electromagnetic oven, one for IGBT and Qiao Dui) interfere with each other, the radiating efficiency of radiator fan in the 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, need not creative mental labour according to technical scheme of the present invention and technical conceive and make other various corresponding conversion scheme, the scope that all belongs to the present invention and protected.

Claims

1. 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 the air outlet plane of living in does not overlap mutually.

2. electromagnetic oven heat radiation structure as claimed in claim 1 is characterized in that, described higher-order of oscillation pipe IGBT and bridge pile up to be laterally before the air outlet and be arranged in juxtaposition.

3. electromagnetic oven heat radiation structure as claimed in claim 1 is characterized in that described higher-order of oscillation pipe IGBT and the bridge heap and the contact-making surface of fin diapire are the plane of its area maximum.

4. electromagnetic oven heat radiation structure as claimed in claim 1 is characterized in that described higher-order of oscillation pipe IGBT and bridge heap is 0-100mm apart from radiator fan air outlet place distance.

5. electromagnetic oven heat radiation structure as claimed in claim 4 is characterized in that described higher-order of oscillation pipe IGBT and bridge heap is 0-20mm apart from radiator fan air outlet place distance.

6. electromagnetic oven heat radiation structure according to claim 1 is characterized in that, is provided with dividing plate between described radiator structure and the coil disc of electric stove, and the heat dissipation wind channel of this radiator structure is separated mutually with the heat dissipation wind channel of coil disc of electric stove.

7. as the described electromagnetic oven heat radiation structure of the arbitrary claim of claim 1-6, it is characterized in that described fin is a copper material.

8. as the described electromagnetic oven heat radiation structure of the arbitrary claim of claim 1-6, it is characterized in that described radiator fan is a turbofan.