Electronic device with heat dissipation equipment

An electronic device includes a chassis, a partition plate mounted in the chassis, a semiconductor refrigeration piece, a first heat sink, a second heat sink, a heat dissipation shell, and a fan. A space of the chassis is partitioned to a first space and a second space by the partition plate. The first heat sink is received in the first space, and engaged with a heating surface of the semiconductor refrigeration piece. The second heat sink is received in the second space, and engaged with a cooling surface of the semiconductor refrigeration piece. The heat dissipation shell is received in the second space, and the second heat sink is received in the heat dissipation shell. The first fan is mounted on a first end of the heat dissipation shell, and a second end of the heat dissipation pipe defines an air outlet.

BACKGROUND

1. Technical Field

The present disclosure relates to electronic devices, and particularly to an electronic device having heat dissipation equipment.

2. Description of Related Art

A number of vents is usually defined in a front panel of a computer chassis for dissipating heat. However, dust can go through the vents and accumulate in the chassis, which may lead to components in the chassis breaking down. Thus, people need to disassemble the chassis and clean out the dust from time to time. However, it is time-consuming and boring to do the cleaning job.

DETAILED DESCRIPTION

FIGS. 1 and 2show an embodiment of an electronic device100comprising a chassis20, a substantially L-shaped partition plate30located in the chassis20, a semiconductor refrigeration piece40, a first heat sink50, a second heat sink60, a substantially L-shaped heat dissipation shell70, a first fan80, and a second fan90.

The chassis20comprises a bottom wall22, a front wall23perpendicularly extending up from a front end of the bottom wall22, a rear wall24perpendicularly extending up from a rear end of the bottom wall22, a top wall25connected between top ends of the front wall23and the rear wall24, and two side walls242(only one of which is shown) detachably installed to two sides of the chassis20. The partition plate30comprises a supporting portion32perpendicularly extending up from the bottom wall22and an installing portion35perpendicularly extending rearward from a top end of the supporting portion32. A bottom end of the supporting portion32is mounted on the bottom wall22, and adjacent to the front wall23. A distal end of the installing portion35is mounted to the rear wall24. The partition plate30partition a space of the chassis20into a first space26and a second space27. The top wall25, the front wall23, the rear wall24, and the partition plate30cooperatively bound the first space26. The bottom wall22, the rear wall24, and the partition plate30cooperatively bound the second space27. The bottom wall22defines a plurality of air inlets222positioned between the supporting portion32and the front wall23. The top wall25defines an air outlet252facing the installing portion35. A compact disc read-only memory (CD-ROM)28is received in the first space26, and located at a junction of the front wall23and the top wall25. A power supply29is received in the first space26, and located at a junction of the rear wall24and the top wall25. A motherboard272mounted on the side wall242, a plurality of hard disk drives275, and other electronic components are received in the second space27. Dustproof sponge is attached to inner surfaces of the side walls242.

The installing portion35defines a receiving hole353adjacent to the air outlet252of the top wall25. The semiconductor refrigeration piece40is received in the receiving hole353. The semiconductor refrigeration piece40comprises a cooling surface44facing the second space27and a heating surface42facing the first space26. The first heat sink50is received in the first space26, and attached to the heating surface42of the semiconductor refrigeration piece40. The second heat sink60is received in the second space27, and attached to the cooling surface44of the semiconductor refrigeration piece40. The second fan90is mounted to the top wall25, and aligns with the air outlet252.

The heat dissipation shell70is received in the second space27, and comprises a cooling pipe72mounted to a bottom of the installing portion35and an air guiding pipe75extending down from an end of the cooling pipe72adjacent to the supporting portion32. The guiding air pipe75is mounted to the supporting portion32. The second heat sink80is received in the cooling pipe72. An opposite end of the cooling pipe72defines an air inlet723adjacent to and facing the rear wall24. The first fan80is installed to the cooling pipe72, and opposite to the air guiding pipe75. A distal end of the air guiding pipe75defines a plurality of air outlets752communicating with the second space27. A pipe77extends up and down through the cooling pipe72and the installing portion35, to communicate the first space26with the second space27, for receiving cables. Airflow from the second space27is blown by the first fan80to enter the heat dissipation shell70through the air inlet723. The airflow entering the heat dissipation shell70is cooled by the second heat sink60, and then enters the second space27through the air outlets752, to cool the motherboard272, the hard disk drives275, and the other electronic components. In the embodiment, the heat dissipation shell70is made of insulation material, such as plastic.

FIG. 3shows that the electronic device100in use. The side walls242of the chassis20are installed to the chassis20, to shield the first and second spaces26and27. The motherboard272and the hard disk drives275generate heat transferred to the air of the second space27. The air of the second space27is heated. The first fan80operates to suck the heated air of the second space27into the cooling pipe72through the air inlet723. The semiconductor refrigeration piece40operates to cool the second heat sink60. The heat of the heated air received in the cooling pipe72is transferred to the second heat sink60, and the heat of the second heat sink60is transferred to the first heat sink50through the semiconductor refrigeration piece40. The heated air received in the cooling pipe72is cooled. The cool air flows through the guiding air pipe75, and enters the second space27through the air outlets752, for dissipating heat of the motherboard272and the hard disk drives275. The second fan90operates to suck cool air into the first space26through the air inlet222. The CD-ROM28generates heat. The cool air flows through the CD-ROM28and the first heat sink50, and the heat of the first heat sink50is transferred to the cool air. The cool air is heated. The heated air is dissipated out of the chassis20by the second fan90through the air outlet252.