CN106571349A - IGBT heat radiation structure and electric rice cooker - Google Patents
IGBT heat radiation structure and electric rice cooker Download PDFInfo
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- CN106571349A CN106571349A CN201510647279.7A CN201510647279A CN106571349A CN 106571349 A CN106571349 A CN 106571349A CN 201510647279 A CN201510647279 A CN 201510647279A CN 106571349 A CN106571349 A CN 106571349A
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Abstract
The invention discloses an IGBT heat radiation structure and an electric rice cooker. The IGBT heat radiation structure comprises a radiator, wherein the radiator is connected with a circuit board, one side of a substrate of the radiator is provided with an IGBT module, multiple parallel heat radiation sheets are formed at the other side of the substrate, an I side board and an II side board which are parallel with the heat radiation sheets are formed at two side end surfaces of the substrate, and multiple inclined heat radiation side boards are formed at two sides of the heat radiation sheets. According to the IGBT heat radiation structure, the multiple heat radiation side boards are formed at the two sides of the heat radiation sheets, a heat radiation speed and heat radiation efficiency are improved through shapes and structures of the heat radiation side boards, local heat concentration is avoided, the IGBT module is made to work in a safe temperature scope, and a safety coefficient and service life of the IGBT module in a use process are improved.
Description
Technical field
The invention belongs to a kind of heat dissipation element of cooking device, and in particular to a kind of IGBT radiator structures and electric cooker.
Background technology
IGBT（Insulated Gate Bipolar Transistor）, i.e. insulated gate bipolar transistor is by BJT（Double pole triode）And MOS（Insulating gate type field effect tube）The compound full-control type voltage driven type power semiconductor of composition.
IGBT has the features such as voltage is high, electric current is big, frequency is high, conducting resistance is little, in being widely used in the inverter circuit of converter.But because the resistance to conveyance capacity of IGBT is poor with resistance to overvoltage capabilities, damage will it once appearance is unexpected.For this purpose, needing to carry out IGBT design protections in terms of excessively stream, overvoltage, overheated three during IGBT uses.
The overtemperature protection of IGBT is usually to adopt radiator, and radiator using common radiator or heat-pipe radiator, and can further adopt forced air cooling on the basis of radiator.
The IGBT in cooking device is applied to due to the impact of assembly space and working environment, the heat of IGBT can not shed in time, the heat of accumulation can make that IGBT is overheated to be burnt out, therefore, the IGBT applied in cooking device is also without a kind of effective, safety and stability radiator structure.
The content of the invention
The present invention proposes to solve the problems, such as prior art, its objective is to provide a kind of IGBT radiator structures and electric cooker.
The technical scheme is that：A kind of IGBT radiator structures, including radiator, radiator is connected with circuit board, the side of substrate is provided with IGBT module in radiator, the opposite side of substrate forms multiple parallel fin, substrate both sides end face forms respectively parallel with fin No. I side plate, No. II side plate, and the fin both sides form multiple inclined side radiating plate-fins.
The free end of the side radiating plate-fin to the direction away from substrate inclines.
The fin side side radiating plate-fin length to the direction of fin free end by substrate according to being gradually reduced.
The side radiating plate-fin of the fin both sides is arranged or shifted to install in para-position.
No. I side plate, No. II side plate are highly all higher than the height of fin.
Pilot hole, the assembling rib of assembling IGBT module are formed in described substrate.
Width of the inter fin space of pilot hole both sides more than rigging screw.
The present invention proposes a kind of electric cooker simultaneously, the electric cooker includes above-mentioned IGBT radiator structures, the IGBT radiator structures include radiator, circuit board, IGBT module, the side of substrate is provided with IGBT module in radiator, the opposite side of substrate forms multiple parallel fin, substrate both sides end face forms respectively parallel with fin No. I side plate, No. II side plate, and the fin both sides form multiple inclined side radiating plate-fins.
The free end of the side radiating plate-fin to the direction away from substrate inclines.
The fin side side radiating plate-fin length to the direction of fin free end by substrate according to being gradually reduced.
The side radiating plate-fin of the fin both sides is arranged or shifted to install in para-position.
No. I side plate, No. II side plate are highly all higher than the height of fin.
Pilot hole, the assembling rib of assembling IGBT module are formed in described substrate.
Width of the inter fin space of pilot hole both sides more than rigging screw.
The fin both sides of the present invention form side radiating plate-fin, and increased radiating rate and radiating efficiency by the shape and its structure of side radiating plate-fin, avoid the concentration of local of heat, so that IGBT module can work within the scope of the temperature of safety, safety coefficient and service life during IGBT module use are increased.
Description of the drawings
Fig. 1 is the assembling stereogram of radiator of the present invention；
Fig. 2 is the axonometric chart of radiator of the present invention；
Fig. 3 is the front view of radiator of the present invention.
Wherein：
1 radiator
2 circuit boards
3 IGBT modules
4 substrates
5 No. I side plates
6 No. II side plates
7 fin
8 side radiating plate-fins
9 pilot holes
10 assembling ribs.
Specific embodiment
Hereinafter, referring to the drawings and embodiment the present invention is described in detail：
As shown in Fig. 1 ~ 3, a kind of IGBT radiator structures, including radiator 1, radiator 1 is connected with circuit board 2, the side of substrate 4 is provided with IGBT module 3 in radiator 1, the opposite side of substrate 4 forms multiple parallel fin 7, and the both sides end face of substrate 4 forms respectively 5, No. II side plate 6 of parallel with fin 7 No. I side plate, and the both sides of the fin 7 form multiple inclined side radiating plate-fins 8.
The free end of the side radiating plate-fin 8 to the direction away from substrate 4 inclines.
The length of 7 side side radiating plate-fin of the fin 8 to the direction of the free end of fin 7 by substrate 4 according to being gradually reduced.
The heat absorption conduction that the substrate 4 of radiator 1 is produced when IGBT module 3 is worked, the fin 7 be arrangeding in parallel is easy to the heat derives that will be absorbed in substrate 4, because the free end of side radiating plate-fin 8 is inclined to the direction away from substrate 4, namely the aperture of heat dissipation channel is changed from small to big, so that the heat transmission gas body of same volume can take away more heats.In the course of work of IGBT module 3, it can be assumed that the heat that the unit interval of IGBT module 3 produces is constant, it is constant by the unit interval air quantity of fin 7, radiator structure in the present invention can make air-flow carry more heats due to skewed side radiating plate-fin 8, ensure that the stability of radiating, it is to avoid the accumulation of amount of localized heat.
The side radiating plate-fin 8 of the both sides of the fin 7 is arranged or shifted to install in para-position.The interfering when layout type of side radiating plate-fin 8 can effectively be avoided or weaken radiating, beneficial to dispersion heat, improves the efficiency of radiating.
5, No. II height of side plate 6 of No. I side plate is all higher than the height of fin 7.
Pilot hole 9, the assembling rib 10 of assembling IGBT module 3 are formed in described substrate 4.
Width of the spacing of fin 7 of the both sides of pilot hole 9 more than rigging screw.And ensure that side radiating plate-fin 8 is not contacted with rigging screw, it is to avoid the heat of local is concentrated.
The present embodiment proposes a kind of electric cooker simultaneously, and the electric cooker includes above-mentioned IGBT radiator structures, and the IGBT radiator structures include radiator 1, circuit board 2, IGBT module 3.IGBT radiator structures in the present embodiment are identical with above-mentioned IGBT radiator structures, will not be described here.
The fin both sides of the present invention form side radiating plate-fin, and increased radiating rate and radiating efficiency by the shape and its structure of side radiating plate-fin, avoid the concentration of local of heat, so that IGBT module can work within the scope of the temperature of safety, safety coefficient and service life during IGBT module use are increased.
Claims (8)
1. a kind of IGBT radiator structures, including radiator（1）, radiator（1）With circuit board（2）It is connected, radiator（1）Middle substrate（4）Side be provided with IGBT module（3）, it is characterised in that：Substrate（4）Opposite side form multiple parallel fin（7）, substrate（4）Both sides end face is formed respectively and fin（7）No. I parallel side plate（5）, No. II side plate（6）, the fin（7）Both sides form multiple inclined side radiating plate-fins（8）.
2. a kind of IGBT radiator structures according to claim 1, it is characterised in that：The side radiating plate-fin（8）Free end to away from substrate（4）Direction incline.
3. a kind of IGBT radiator structures according to claim 2, it is characterised in that：The fin（7）Side side radiating plate-fin（8）Length is according to by substrate（4）To fin（7）The direction of free end is gradually reduced.
4. a kind of IGBT radiator structures according to claim 3, it is characterised in that：The fin（7）The side radiating plate-fin of both sides（8）Arrange or shift to install in para-position.
5. a kind of IGBT radiator structures according to claim 4, it is characterised in that：No. I side plate（5）, No. II side plate（6）Highly it is all higher than fin（7）Height.
6. a kind of IGBT radiator structures according to claim 5, it is characterised in that：Described substrate（4）It is middle to form assembling IGBT module（3）Pilot hole（9）, assembling rib（10）.
7. a kind of IGBT radiator structures according to claim 6, it is characterised in that：Pilot hole（9）The fin of both sides（7）Width of the spacing more than rigging screw.
8. a kind of a kind of electric cooker, including IGBT radiator structures, it is characterised in that：IGBT radiator structure of the described IGBT radiator structures as described in any one of claim 1 ~ 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510647279.7A CN106571349B (en) | 2015-10-09 | 2015-10-09 | IGBT heat radiation structure and electric rice cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510647279.7A CN106571349B (en) | 2015-10-09 | 2015-10-09 | IGBT heat radiation structure and electric rice cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106571349A true CN106571349A (en) | 2017-04-19 |
| CN106571349B CN106571349B (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510647279.7A Active CN106571349B (en) | 2015-10-09 | 2015-10-09 | IGBT heat radiation structure and electric rice cooker |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100284153A1 (en) * | 2009-05-11 | 2010-11-11 | Infineon Technologies Ag | Twist-Secured Assembly of a Power Semiconductor Module Mountable on a Heat Sink |
| CN101984500A (en) * | 2010-11-09 | 2011-03-09 | 宁波锦浪新能源科技有限公司 | Heat dispersion structure of power unit electrolytic capacitor of high-power inverter |
| CN202178247U (en) * | 2011-08-04 | 2012-03-28 | 深圳市鑫汇科电子有限公司 | Radiating structure for insulated gate bipolar transistor (IGBT) and bridge rectifier of induction cooker |
| CN202713664U (en) * | 2012-07-27 | 2013-01-30 | 杭州朗能电子科技有限公司 | Induction cooker heat generating component |
| CN202813082U (en) * | 2012-09-06 | 2013-03-20 | 中山市国铠照明有限公司 | LED (Light Emitting Diode) wash wall lamp |
| CN205069619U (en) * | 2015-10-09 | 2016-03-02 | 上海纯米电子科技有限公司 | IGBT heat radiation structure and electric rice cooker |
-
2015
- 2015-10-09 CN CN201510647279.7A patent/CN106571349B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100284153A1 (en) * | 2009-05-11 | 2010-11-11 | Infineon Technologies Ag | Twist-Secured Assembly of a Power Semiconductor Module Mountable on a Heat Sink |
| CN101984500A (en) * | 2010-11-09 | 2011-03-09 | 宁波锦浪新能源科技有限公司 | Heat dispersion structure of power unit electrolytic capacitor of high-power inverter |
| CN202178247U (en) * | 2011-08-04 | 2012-03-28 | 深圳市鑫汇科电子有限公司 | Radiating structure for insulated gate bipolar transistor (IGBT) and bridge rectifier of induction cooker |
| CN202713664U (en) * | 2012-07-27 | 2013-01-30 | 杭州朗能电子科技有限公司 | Induction cooker heat generating component |
| CN202813082U (en) * | 2012-09-06 | 2013-03-20 | 中山市国铠照明有限公司 | LED (Light Emitting Diode) wash wall lamp |
| CN205069619U (en) * | 2015-10-09 | 2016-03-02 | 上海纯米电子科技有限公司 | IGBT heat radiation structure and electric rice cooker |
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| Publication number | Publication date |
|---|---|
| CN106571349B (en) | 2020-03-24 |
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Address after: Room 01-04, 1st floor, No.2 Lane 60, Naxian Road, Pudong New Area pilot Free Trade Zone, Shanghai 201203 Patentee after: Chunmi Technology (Shanghai) Co.,Ltd. Patentee after: Xiaomi Technology Co.,Ltd. Address before: Room 301-182, building 1, 400 Fangchun Road, Pudong New Area, Shanghai 201203 Patentee before: SHANGHAI CHUNMI ELECTRONICS TECHNOLOGY Co.,Ltd. Patentee before: Xiaomi Technology Co.,Ltd. |
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