DE29518201U1 - Heat dissipation device for a computer - Google Patents

Description

GLAWE, DELFS, MOLL & PARTNERS ·; .'PATENT ATTORNEY :»·

• t 'iUsEVASSEljE REPRESENTATIVE AT THE SUBAI\IC PATENT OFFICE*

RICHARD GLAWE, Dr.-lng. (1952-1985)

KUUS DELFS*, Dipl.-lng., Hamburg

WALTER MOLL*, Dipl.-Phys. Dr. rer. nat, Munich

HEINRICH NIEBUHR*, Dipl.-Phys, Dr. phil. habil., Hamburg

ULRICH GLAWE*, Dipl.-Phys. Dr. rer. nat., Munich

BERNHARD MERKAU*, Dipl.-Phys., Munich

CHRISTOF KEUSSEN, Dipl.-Chem, Dr. rer. nat., Hamburg

PO Box 26 01 62 PO Box 13 03 91

80058 Munich 20103 Hamburg

Liebherrstrasse 20 Rothenbaumchaussee

80538 Munich 20148 Hamburg

&eegr;&ngr;,,,, «&rgr;.· y» _nn Tel.(089)22 46 65 Tel.(040)410 20 08

unuil mei lang Fax (089) 2239 38 (G3) Fax (040) 45 89 84 (G4,G3)

Taipei, TaiwanTelex522505

HAMBURG

&rgr; 16820/95 N/He (#178)

Heat dissipation device for a computer

The present invention relates to a heat dissipation device and more particularly to such a heat dissipation device which is installed in the central processing unit of a computer system and is operated to generate a radial air flow for carrying heat away from the central processing unit (CPU) of the central processing unit to the outside.

When the central processing unit of a computer's central processing unit is operated, it will emit heat, which may affect the normal operation of the electronic components of the electrical circuits. Therefore, heat dissipation devices such as fans and heat sinks must be used and installed to dissipate heat away from the central processing unit. However, some of the heat dissipated by conventional heat dissipation devices will still remain within the computer's central processing unit.

Dresdner Bank AG Hamburg 04 030 4^&*Ö0 (ELZ^tfo SOtfÖO) ••'pöSftJ&nk Hfcfnburg»147e 07-200 (BLZ 200 100 20).

An object of the present invention is to provide a heat dissipation device capable of efficiently dissipating heat from the central processing unit to the outside of the central processing unit of the computer. Another object of the present invention is to provide a heat dissipation device which is simple in construction and easy to install.

According to one aspect of the present invention, the heat dissipation device comprises an exhaust fan installed in the casing of the central processing unit of the computer and having an exhaust port at one end extending to the outside of the casing of the central processing unit of the computer and a suction pipe at the opposite end, a hood covering the central processing unit of the central processing unit of the computer, the hood having an exhaust pipe, a plurality of air holes around its periphery and a plurality of hooked portions hooked to the central processing unit, and an air hose connected between the suction pipe of the exhaust fan and the exhaust pipe of the hood. According to another aspect of the present invention, a cooling plate or a cooling sheet is firmly fixed to the inside with a screw and attached to the central processing unit of the central processing unit of the computer so that heat can be quickly conducted from the central processing unit to the inside of the hood.

The invention is described below using advantageous embodiments with reference to the accompanying drawings. In the drawings:

Fig. 1 shows a perspective view of a heat dissipation device according to the invention;

Fig. 2 is an exploded view of the heat dissipation device of Fig. 1;

Fig. 3 is a cross-sectional view of the heat dissipation device installed and operating in the central processing unit of the computer; and

Fig. 4 shows an alternative form of the present invention.

As shown in Figures 1 and 2, the heat dissipation device of the invention generally comprises a ventilator 1, an air hose 2 and a hood 3. The ventilator 1 is a radial flow fan comprising a housing 12, a fan mount 10 covering the housing 12 and a radial flow wind blade and motor assembly 11 mounted on the fan mount 10. The housing 12 has a fan chamber 15 in the center which houses the wind blade and motor assembly 11, a suction pipe 14 at one end and an exhaust port 17 at the opposite end. The blower bracket 10 is attached to the housing 12 by means of screws 13 and forms a flow guide wall 16 for guiding air from the suction pipe 14 to the outlet opening 17. The hood 13 has an outlet pipe 31 connected to the suction pipe 14 of the housing 12 through the air hose 2, air holes 33 through which air can circulate, and hook-shaped areas 32 for installation. The suction pipe 14 has two raised areas 18 on two opposite sides which, when the suction pipe 14 is inserted into one end of the air hose 2, engage the inner wall of the air hose 2 to secure the connection between the suction pipe 14 and the air hose 2.

As shown in Fig. 3 and again Fig. 2, the ventilator 1 is attached to the rear wall of the housing of the central processing unit 4, and the hood 3 covers the central processing unit 5 and is held in place by the fact that the hook-shaped areas 32 are hooked into the space between the central processing unit CPU 5 and the CPU carrier 6. When the ventilator 1 is operated, a radial air flow is generated and from the outlet opening 17

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so that heat is quickly conducted away from the CPU 15 to the outside of the computer central unit 4. Since the hood 3 covers the CPU 5, heat can be efficiently drawn from the CPU 5 to the blower chamber 15 through the air hose 2 and then expelled from the exhaust port 17 of the housing 12 and the housing of the computer central unit 4.

As shown in Fig. 4, a heat sink or cooling plate 7 is attached to the cover 3 on the inside by means of a screw 34. When the cover 3 covers the central processing unit 5, the heat sink or cooling plate 7 is closely attached to the CPU 5 so that heat can be quickly transferred to the inside of the cover 3.

The invention can be summarized as follows. The heat dissipation device comprises a ventilator installed in the case of the central processing unit of the computer and having at one end an exhaust port extending to the outside of the case of the central processing unit of the computer and a suction pipe at the opposite end, a hood covering the central processing unit of the central processing unit of the computer, the hood having an exhaust pipe, a plurality of air holes around its periphery and a plurality of hook-shaped portions hooked to the CPU, and an air hose connected between the suction pipe of the ventilator and the exhaust pipe of the hood.

It will be understood that the drawings are for illustration purposes only and are not intended to limit the limits and scope of the invention disclosed herein.

Claims (4)

• ·· · ■ Protection claims 1. A heat dissipation device with a ventilator installed in the housing of the central processing unit of a computer for dissipating heat from the central processing unit (CPU) of the central processing unit of the computer, characterized in that the ventilator (1) comprises a housing (12), a fan mount (10) covering the housing (12), and a wind vane and motor assembly (11) mounted on the fan mount (10), the housing (12) having a wind vane chamber (15) in the center which accommodates the wind vane, a suction pipe (14) at one end, and an exhaust port (17) at the opposite end; it has a hood (3) covering the CPU (5) of the central processing unit of the computer, the hood (3) having an exhaust pipe (31), a plurality of air holes (33) around the periphery and a plurality of hook-shaped areas (32) by which it is hooked onto the CPU (5); and it has an air hose (2) which connects the suction pipe (14) of the ventilator (1) to the outlet pipe (31) of the hood (3). 2. Heat dissipation device according to claim 1, characterized in that the ventilator (1) is a radial flow fan. 3. Heat dissipation device according to claim 1 or 2, characterized in that the suction pipe (14) of the vent (1) has two raised areas (18) on two opposite sides that are in a force-fitting connection with the inner wall of the air hose (2). 4. Heat dissipation device according to one of claims 1 to 3, characterized in that the hood (3) further comprises a cooling plate or a cooling sheet (7) which is firmly attached to the inside by means of a screw (34) and rests against the CPU (5) of the central unit of the computer.