Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
대리인 / 주소
Novak, Druce, Connolly Bove + Quigg LLP
인용정보
피인용 횟수 :
3인용 특허 :
2
초록▼
An exemplary electronic device includes a container, a fan assembly and a duct received in the container. The fan assembly includes a centrifugal fan and a fin group thermally contacting an electronic component in the container. An air passage is defined between each adjacent fins of the fin group.
An exemplary electronic device includes a container, a fan assembly and a duct received in the container. The fan assembly includes a centrifugal fan and a fin group thermally contacting an electronic component in the container. An air passage is defined between each adjacent fins of the fin group. An inner side of the fin group is mounted on an outlet of the centrifugal fan. A bottom surface of the fin group and an inner surface of the container cooperatively define a first channel therebetween. The duct includes an inlet and a first outlet. Airflow guided by the centrifugal fan flows through the duct and the first channel to cool a bottom end of the fin group, then is absorbed into the centrifugal fan from an inlet of the centrifugal fan, and then flow through the air passages of the fin group to cool a central portion the fin group.
대표청구항▼
1. An electronic device comprising: a hollow container; an electronic component received in the container;a fan assembly received in the container and comprising a centrifugal fan and a fin group thermally contacting the electronic component, an outlet defined at a lateral side of the centrifugal fa
1. An electronic device comprising: a hollow container; an electronic component received in the container;a fan assembly received in the container and comprising a centrifugal fan and a fin group thermally contacting the electronic component, an outlet defined at a lateral side of the centrifugal fan, and a top inlet and a bottom inlet defined at a central portion of the centrifugal fan and respectively extending through a top end and a bottom end of the centrifugal fan, the fin group comprising a plurality of fins, an air passage defined between each adjacent fins of the plurality of fins, an inner side of the fin group being mounted on the outlet of the centrifugal fan, a bottom surface of the fin group and an inner surface of the container cooperatively defining a first channel therebetween; anda duct received in the container and located at an outer end of the fan assembly, the duct comprising an inlet and a first outlet, the first outlet aligned with an outer end of the first channel;wherein the centrifugal fan guides airflow located at an outside of the electronic device into the duct from the inlet of the duct, then the airflow in the duct flows through the first channel to cool a bottom end of the fin group, then flows out of the first channel and is absorbed into the centrifugal fan through the bottom inlet of the centrifugal fan, and then flow through the air passages of the fin group to cool a central portion the fin group and is exhausted from the electronic device. 2. The electronic device of claim 1, wherein a longitudinal direction of the first channel is perpendicular to a longitudinal direction of each of the air passages. 3. The electronic device of claim 1, wherein the container comprises a bottom cover, the bottom cover comprises a stretching portion, a connecting portion extending upwardly from a first lateral side of the stretching portion, and two posts extending from a second lateral side of the stretching portion, opposite sides of the bottom surface of the fin group respectively abut against a top end of the connecting portion and top ends of the two posts, the bottom surface of the fin group is spaced from a top surface of the stretching portion, and the bottom surface of the fin group, the top surface of the stretching portion and an inner surface of the connecting portion cooperatively define the first channel therebetween. 4. The electronic device of claim 3, wherein the bottom cover comprises a bottom plate extending outwardly from the top end of the connecting portion and supporting the bottom end of the centrifugal fan, and an opening is defined in the bottom plate and aligned with the bottom inlet of the centrifugal fan. 5. The electronic device of claim 3, wherein the bottom cover comprises a supporting wall extending upwardly from the second lateral side of the stretching portion and located at an outside of the fin group, and a plurality of apertures are defined in the supporting wall and communicate the air passages of the fin group. 6. The electronic device of claim 5, wherein the bottom cover further comprises a baffling wall bended from the supporting wall and located at an end of the stretching portion, the stretching portion is spaced from the two posts, and opposite sides of a lateral end of the duct are sandwiched between the one of the two posts and the baffling wall, and a bottom end of the duct abuts against the top surface of the stretching portion. 7. The electronic device of claim 3, wherein a top surface of the fin group and another inner surface of the container cooperatively define a second channel therebetween, the duct further comprises a second outlet aligned with an end of the second channel, a part of the airflow in the duct flows into the second channel from the second outlet to cool a top end of the fin group, then the part of the airflow is absorbed into the centrifugal fan through the top inlet of the centrifugal fan, and finally flow through the air passages of the fin group to cool the central portion the fin group. 8. The electronic device of claim 7, wherein the container comprises a top cover, the top cover comprises a top plate located above the top end of the fin group and a side wall extending downwardly from a lateral end of the top plate, the side wall is located at an outside of the fin group and engages with the bottom cover, and a bottom surface of the top plate, an inner surface of the side wall, and the top surface of the fin group cooperatively define the second channel therebetween. 9. The electronic device of claim 8, wherein the first channel and the second channel are located at opposite sides of the fin group and can not communicate with each other. 10. The electronic device of claim 8 further comprising a heat pipe, the heat pipe comprising an evaporating section and a condensing section bended from a free end of the evaporating section, the fin group having an L-shaped configuration, a step defined at lateral side of the top end of the fin group, the condensing section received in the step and the evaporating section located at the outside of the fin group to contact the electronic component. 11. The electronic device of claim 10, wherein the condensing section is sandwiched between the centrifugal fan and the top end of the fin group, a bottom surface of the condensing section fully covers a top end of the step, and a top surface of the condensing section is coplanar with the top surface of the fin group. 12. The electronic device of claim 11, wherein the top surface and the bottom surface of the fin group are airproof surfaces. 13. The electronic device of claim 7, wherein the duct further comprises a flange abutting the top surface of the fin group. 14. An electronic device comprising: a hollow container comprising a top cover and a bottom cover engaging with the top cover;an electronic component received in the container;a fan assembly received in the container and comprising a centrifugal fan and a fin group thermally contacting the electronic component, an outlet defined at a lateral side of the centrifugal fan, and a top inlet and a bottom inlet defined at a central portion of the centrifugal fan and respectively extending through a top end and a bottom end of the centrifugal fan, the fin group comprising a plurality of fins, an air passage defined between each adjacent fins of the plurality of fins, an inner side of the fin group being mounted on the outlet of the centrifugal fan, a bottom surface of the fin group located above a top surface of the bottom cover and a first channel defined between the bottom surface of the fin group and the top surface of the bottom cover, a top surface of the fin group located under a bottom surface of the top cover, and a second channel defined between the top surface of the fin group and the bottom surface of the top cover;a duct received in the container and located at an outer end of the fan assembly, the duct comprising an inlet, a first outlet an a second outlet, the first outlet and the second outlet respectively aligned with an outer end of the first channel and an outer end of the second channel;wherein airflow guided by the centrifugal fan flows into the duct, and a part of the airflow flows through the first channel to cool a bottom end of the fin group, then flows out of the first channel and is absorbed into the centrifugal fan through the bottom inlet of the centrifugal fan, another part of the airflow flows into the second channel to cool a top end of the fin group and then is absorbed into the centrifugal fan through the top inlet of the centrifugal fan, and the absorbed airflow of the centrifugal fan then flows through the air passages of the fin group to cool a central portion the fin group and is exhausted from the electronic device. 15. The electronic device of claim 14, wherein a longitudinal direction of the first channel is perpendicular to a longitudinal direction of each of the air passages. 16. The electronic device of claim 14, wherein the first channel and the second channel are located at opposite sides of the fin group and can not communicate with each other. 17. The electronic device of claim 14, wherein a plurality of slits are defined in the top cover, opposite ends of the duct respectively abut against the bottom surface of the top cover and the top surface of the bottom cover, and the inlet of the duct communicates with the slits of the top cover. 18. The electronic device of claim 17, wherein a flange is bended from the duct and abuts the top surface of the fin group. 19. The electronic device of claim 14 further comprising a heat pipe, the heat pipe comprising an evaporating section and a condensing section bended from a free end of the evaporating section, the evaporating section contacting the electronic component and the condensing section mounted on the fin group.
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