Cooling system for electronic devices, in particular, computers

• US 7,926,553 B2
• Filed: 03/07/2006
• Issued: 04/19/2011
• Est. Priority Date: 03/07/2005
• Status: Expired due to Fees

• Current Assignee: Asetek Incorporated (Asetek Holdings Incorporated)
• Original Assignee: Asetek Incorporated (Asetek Holdings Incorporated)
• Inventors: Dautert, Thomas, Gunther, Eberhard
• Primary Examiner(s): Leo; Leonard R
• Application Number:
  US11/817,916
• Publication Number:
  US 20080247137A1
• Time in Patent Office: 1,869 Days
• Field of Search: 165/104.14, 165/104.33, 361/700
• US Class Current: 165/104.14
• CPC Class Codes: F28D 15/0266 with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers F28D15/043 takes precedence
• CPC Class Codes: G06F 1/20 Cooling means

Abstract

The invention concerns a cooling system for electronic devices, especially computers, comprising an evaporator (1), a vapor-distribution and condensate-collection element (3) and a condenser (2) with a plurality of condenser pipes (6) and a block of fins (5) connecting the condenser pipes (6), wherein the condenser pipes (6) are arranged parallel to each other and extend upwards from the vapor-distribution and condensate-collection element (3) and are closed at their upper ends.

Claims

1. A cooling system for electronic devices, especially computers, comprising:

a vapor-distribution and condensate-collection element (3) and a condenser (2) with a plurality of condenser pipes (6) and a block of fins (5) connecting the condenser pipes (6);

wherein the condenser pipes (6) are arranged parallel to each other and extend upwards from the vapor-distribution and condensate-collection element (3) and are closed at their top ends;

a plurality of evaporators (1) fitted and connected with the vapor-distribution and condensate-collection element (3), at least a first of said plurality of evaporators disposed vertically lower than the condensate-collection element (3) and at least a second of said plurality of evaporators disposed vertically higher than the condensate-collection element (3);

wherein a first connecting pipe (8) without a heat pipe structure is fitted between the first evaporator (1) and the vapor-distribution and condensate-collection element (3);

wherein a second connecting pipe (7) with an internal heat pipe structure is fitted between the second evaporator (1) and the vapor-distribution and condensate collection element (3); and

wherein the first connecting pipe (8) is connected into the vapor-distribution and condensate-collection element (3) at a height (H) of 0.5 to 1 times a diameter (D) of the second connecting pipe (7) with said heat pipe structure.

2. A cooling system for electronic devices, especially computers, comprising:

an evaporator (1);

a vapor-distribution and condensate-collection element (3) and a condenser (2) with a plurality of condenser pipes (6) and a block of fins (5) connecting the condenser pipes (6);

wherein the condenser pipes (6) are arranged parallel to each other and extend upwards from the vapor-distribution and condensate-collection element (3) and are closed at their top ends;

wherein a connecting pipe (4) is fitted between the evaporator (1) and the vapor-distribution and condensate-collection element (3); and

wherein the connecting pipe (4) is designed as a pipe with a heat pipe structure (7) where the condenser (2) is arranged below the evaporator (1) and the pipe with heat pipe structure (7) is connected into the vapor-distribution and condensate-collection element (3.1) with an insertion length (L) of one third to two thirds of the length of the vapor-distribution and condensate-collection element (3.1).

3. The cooling system according to claim 2, further including a second evaporator (1) disposed vertically lower than the condenser (2);

and

a second connecting pipe (8) configured as a pipe without heat pipe structure fitted between the second evaporator (1) and the vapor-distribution and condensate-collection element (3.1), said second connecting pipe (8) connected into the vapor-distribution and condensate-collection element (3.1) at a height (H) of 0.5 to 1times the diameter (D) of the connecting pipe with the heat pipe structure (7).

4. A cooling system for electronic devices, especially computers, comprising:

a vapor-distribution and condensate-collection element (3) consisting of a horizontal pipe (3.1) and a condenser (2);

a plurality of an evaporators (1), at least one of said plurality of evaporators disposed vertically higher than said condenser, and at least another of said plurality of evaporators disposed vertically lower than, said condenser (2);

wherein said condenser (2) consists of a plurality of condenser pipes (6) interconnected by a block of radiating fins (5), said condenser pipes (6) arranged parallel to each other and are fitted to extend radially upwards from a surface line of the horizontal pipe (3.1) and having enclosed top ends;

wherein each individual evaporator (1) disposed vertically higher than said condenser (2) is coupled to said horizontal pipe (3.1) of the vapor-distribution and condensate-collection element (3) by a connecting pipe (7) having a common diameter (D) and an internal heat pipe structure; and

wherein each individual evaporator (1) disposed vertically lower than said condenser (2) is coupled to said horizontal pipe (3.1) of the vapor-distribution and condensate-collection element (3) by a connecting pipe (8) without an internal heat pipe structure.

5. The cooling system of claim 4 wherein each connecting pipe (8) without an internal heat pipe structure is connected into the horizontal pipe (3.1) of the vapor-distribution and condensate-collection element (3) at a height (H) of 0.5 to 1 times the diameter (D) of each connecting pipe (7) with the internal heat pipe structure.

6. The cooling system of claim 4 wherein each connecting pipe (7) without the internal heat pipe structure is connected into the horizontal pipe (3.1) with an insertion length (L) extending for one-third to two-thirds of the length of the horizontal pipe (3.1).