U.S. patent application number 11/883472 was filed with the patent office on 2009-01-15 for cooler.
This patent application is currently assigned to BEHR INDUSTRY GMBH & CO. KG. Invention is credited to Steffen Groezinger, Horst Rothenhoefer, Volker Velte.
Application Number | 20090014157 11/883472 |
Document ID | / |
Family ID | 36177772 |
Filed Date | 2009-01-15 |
United States Patent
Application |
20090014157 |
Kind Code |
A1 |
Groezinger; Steffen ; et
al. |
January 15, 2009 |
Cooler
Abstract
The invention relates to a cooler (1) for a PC processor. Said
cooler comprises a heat absorption area (3), a heat dissipation
area (4), and a channel system (2) consisting of profiled elements
and/or stamped/bent components (8) welded together. Said channel
system is at least partially filled with a coolant and comprises
between the channels of the channel system (2) corrugated sheets
(9) that are provided in the heat dissipation area (4).
Inventors: |
Groezinger; Steffen;
(Vaihingen, DE) ; Rothenhoefer; Horst; (Lauffen,
DE) ; Velte; Volker; (Otisheim, DE) |
Correspondence
Address: |
WOODARD, EMHARDT, MORIARTY, MCNETT & HENRY LLP
111 MONUMENT CIRCLE, SUITE 3700
INDIANAPOLIS
IN
46204-5137
US
|
Assignee: |
BEHR INDUSTRY GMBH & CO.
KG
Stuttgart
DE
|
Family ID: |
36177772 |
Appl. No.: |
11/883472 |
Filed: |
January 26, 2006 |
PCT Filed: |
January 26, 2006 |
PCT NO: |
PCT/EP06/00681 |
371 Date: |
December 6, 2007 |
Current U.S.
Class: |
165/104.33 ;
165/104.34; 257/E23.088 |
Current CPC
Class: |
H01L 2924/0002 20130101;
F28D 1/0333 20130101; H01L 2924/00 20130101; F28D 15/0275 20130101;
H01L 2924/0002 20130101; F28D 2021/0029 20130101; F28D 2021/0031
20130101; F28D 15/0233 20130101; H01L 23/427 20130101 |
Class at
Publication: |
165/104.33 ;
165/104.34 |
International
Class: |
F28D 15/00 20060101
F28D015/00 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 1, 2005 |
DE |
10 2005 004 777.7 |
Claims
1-12. (canceled)
13. A cooler, especially for a semiconductor component, in
particular for a PC processor, with a heat-absorbing area (3) and a
heat-dissipating area (4), characterized by a channel system (2),
which is made from profiled elements and/or stamped and bent
sheet-metal parts (8) soldered to each other and which is filled at
least partially with a coolant, and corrugated sheet-metal ribs (9)
arranged between the channels of the channel system (2) in the
heat-dissipating area (4).
14. The cooler according to claim 13, characterized in that the
channel system (2) has a square construction at least in the
heat-dissipating area (4).
15. The cooler according to claim 14, characterized in that the
channel system has several interconnected planes in the
heat-dissipating area (4).
16. The cooler according to claim 15, characterized in that at
least two connections (10) are provided.
17. The cooler according to claim 16, characterized in that the
connections (10) are arranged on opposite corners.
18. The cooler according to claim 17, characterized in that the
connections (10) are constructed as formed areas of the stamped and
bent sheet-metal parts (8), which are constructed on one side with
a projecting, hollow cylindrical, shape.
19. The cooler according to claim 13, characterized in that a
closable filling nozzle (7) is provided opening into the
heat-absorbing area (3).
20. The cooler according to claim 13, characterized in that the
heat-absorbing area (3) is formed by a chamber, in which a
plurality of crossbars, pins (5), or other surface area-increasing
elements project outward from the side on which the element to be
cooled is attached.
21. The cooler according to claim 20, characterized in that the
longitudinal extent of the surface area-increasing element extends
perpendicular to the planes of the channel system (2) in the
heat-dissipating area (4).
22. The cooler according to claim 13, characterized in that the
corrugated sheet-metal ribs (9) are arranged running parallel to
the stamped and bent sheet-metal parts (8), wherein the crests and
valleys of the corrugated sheet-metal ribs (9) are arranged running
perpendicular to the longitudinal extent and in the direction of
the width of the channels.
23. The cooler according to claim 13, characterized in that
attachment openings for a fan are provided on the cooler (1),
wherein the fan is attached in the heat-dissipating area (4).
24. The cooler according to claim 13, characterized in that the
cooler (1) is partially filled with an alcohol-water mixture as a
coolant, wherein the coolant is at a slightly reduced pressure.
Description
CROSS-REFERENCES TO RELATED APPLICATIONS
[0001] This application is a National Stage filing of International
Application PCT/EP2006/000681, filed Jan. 26, 2006, claiming
priority to German Application No. 10 2005 004 777.7, filed Feb. 1,
2005, entitled "COOLER". The present application claims priority to
PCT/EP2006/000681, and to German Application No. 10 2005 004 777.7,
and both references are expressly incorporated by reference herein,
in their entireties.
BACKGROUND OF THE INVENTION
[0002] The invention relates to a cooler according to the present
disclosure.
[0003] Due to ever increasing demands, for example, on PC
processors with respect to their power, the cooling requirements of
these processors increase correspondingly. Here, the cooling should
be performed as quietly as possible.
[0004] The task of the invention is to make available an improved
cooler, which is, however, economical as much as possible,
especially one that can be produced economically, in particular for
PC processors.
[0005] This task is accomplished by a cooler with the features of
the present disclosure. Advantageous constructions are described
hereinafter.
[0006] According to the invention, a cooler, which can be used
advantageously for cooling one or more semiconductor components,
especially PC processors, is provided with a heat-absorbing area
and a heat-dissipating area, which has a channel system that is
composed of profiled elements and/or stamped sheet-metal parts
soldered to each other and that is filled at least partially with a
coolant, and corrugated sheet-metal ribs arranged between the
channels of the channel system in the heat-dissipating area. In
this way, because the components are soldered to each other, simple
production with only one soldering process is possible. Here, the
coolant guidance can be constructed so that no other lines are
necessary, i.e., the channel system is formed preferably
exclusively by parts that can be soldered to each other.
[0007] The parts that are used preferably involve as many identical
parts as possible, so that the tool and logistics costs can be kept
low.
[0008] The channel system preferably has a square shape at least in
the heat-dissipating area, which simplifies the use of identical
parts.
[0009] In this way, in the heat-dissipating area there are several
planes that are preferably interconnected by means of at least two
connections. The connections are preferably arranged at the
corners, especially at diagonally opposite corners.
[0010] For the use of stamped and bent sheet-metal parts, the
connections are preferably constructed as formed areas of these
parts, wherein they project upwards. In this way, the connections
preferably have a round tube-like construction.
[0011] For simple filling, preferably a closable filling nozzle is
provided opening into the heat-absorbing area. In this way, the
filling nozzle can also have an air flow-specific task, for which
it is constructed preferably at the highest position in the middle
in the direction of the fan.
[0012] The heat-absorbing area is preferably formed by a chamber,
in which a plurality of crossbars, pins, or other surface
area-increasing elements project outwards from the side, at which
the element to be cooled is attached. In this way, the longitudinal
extent of the surface area-increasing element is preferably
perpendicular to the planes of the channel system in the
heat-dissipating area.
[0013] To allow good heat transfer, the corrugated sheet-metal ribs
are preferably arranged running parallel to the stamped and bent
sheet-metal parts forming the channels, wherein the crests and
valleys of the corrugated sheet-metal ribs are arranged running
perpendicular to the longitudinal extent and in the direction of
the width of the channels. With an airtight attachment of the fan
above the cooler, all of the air fed through the fan can flow
through the heat-dissipating area, i.e., the entire amount of
supplied air can be used, which makes possible an optimization of
the cooling output.
[0014] Attachment openings or boreholes for bolts or threaded
boreholes are preferably provided on the cooler for a fan, with the
fan preferably being attached in the heat-dissipating area.
[0015] The cooler is preferably partially filled with an
alcohol-water mixture as coolant, wherein the coolant is at a
slightly reduced pressure, so that the boiling point is lowered and
the boiling point is reached even for relatively low temperatures
in the heat-absorbing area.
BRIEF SUMMARY
[0016] A cooler (1) for a PC processor comprises a heat absorption
area (3), a heat dissipation area (4), and a channel system (2)
consisting of profiled elements and/or stamped/bent components (8)
welded together. The channel system is at least partially filled
with a coolant and comprises between the channels of the channel
system (2) corrugated sheets (9) that are provided in the heat
dissipation area (4).
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0017] In the following, the invention is explained in detail using
an embodiment with a variant with reference to the drawings.
[0018] FIG. 1 illustrates a section through a cooler according to
the embodiment.
[0019] FIG. 2 illustrates a section in the area of a connection of
the channel planes of the cooler from FIG. 1.
[0020] FIG. 3 illustrates a perspective view of the cooler from
FIG. 1.
[0021] FIGS. 4a-c illustrate a sheet, which is used for a channel,
from various perspectives.
DETAILED DESCRIPTION
[0022] For the purposes of promoting an understanding of the
disclosure, reference will now be made to the embodiments
illustrated in the drawings and specific language will be used to
describe the same. It will nevertheless be understood that no
limitation of the scope of the disclosure is thereby intended, such
alterations and further modifications in the illustrated device and
its use, and such further applications of the principles of the
disclosure as illustrated therein being contemplated as would
normally occur to one skilled in the art to which the disclosure
relates.
[0023] A cooler 1 for a PC processor (not shown) has a channel
system 2, in which a coolant is located, with a heat-absorbing area
3 and a heat-dissipating area 4. The heat-dissipating area 3, shown
at the bottom in FIG. 1, comprises a chamber formed by a hood, in
which a plurality of pins 5 for increasing the heat-transferring
surface area projects from the side of the contact area 6 on the PC
processor.
[0024] A closable coolant filling nozzle 7, with whose help the
channel system 2 is partially filled after successful production of
the cooler 1 with the coolant, in the present case an alcohol-water
mixture, which is at a slightly reduced pressure, opens into the
heat-absorbing area 3.
[0025] The heat-absorbing area 3 is connected via openings (not
shown in more detail) to the heat-dissipating area 4. The
heat-dissipating area 4 is composed essentially from sheet-metal
parts 8 constructed as stamped and bent parts (see FIG. 4),
corrugated ribs 9, a base plate arranged adjacent to the
heat-absorbing area 3, and a cover plate arranged on the other side
of the heat-dissipating area 4. All of the parts, that is, the
parts of the heat-dissipating area 4 and also the heat-absorbing
area 3, are soldered to each other in a single work process after
being put together. Here, two sheet-metal parts 8 twisted around
each other form a plane of the channel system 2 in the form of a
square-shaped ring channel. The individual planes of the channel
system 2 are connected to each other via connections 10 at two
diagonally opposite corners. The connections 10 are here part of
the stamped and bent sheet-metal parts, wherein they are
constructed on one side projecting with a hollow cylindrical shape
and are soldered to the corresponding area of the adjacent plane of
the channel system 2.
[0026] Corrugated ribs 9 are arranged between two planes of the
channel system 2, wherein the orientation of the corrugated ribs 9
is such that good ventilation is possible with the help of a fan
(not shown) attached by means of screws (at the top in FIG. 1).
[0027] The arrangement of the cooler 1 is advantageous so that the
heat-absorbing area 3 is arranged underneath the heat-dissipating
area 4, so that the liquid coolant flows downward and collects
there. Due to the reduced low pressure, the boiling point is
reduced, so that even for a relatively small increase in the
temperature, due to the heat output by the PC processor, boiling
generates bubbles, which rise upwards, that is, also into the
heat-dissipating area 4, and thus ensure a continuous thorough
mixing of the coolant. In the heat-dissipating area 4, the coolant
is cooled by the dissipation of heat outward to the air fed from
the fan. The cooled coolant sinks back into the heat-absorbing area
3, where it can again absorb and dissipate heat.
[0028] According to one variant, instead of stamped and bent
sheet-metal parts, profiled elements and plates are used, which
allow a corresponding layout of the channel system. The profiled
elements and plates can also be soldered to each other in one work
process. The function corresponds to that of the first
embodiment.
[0029] While the preferred embodiment of the invention has been
illustrated and described in the drawings and foregoing
description, the same is to be considered as illustrative and not
restrictive in character, it being understood that all changes and
modifications that come within the spirit of the invention are
desired to be protected.
* * * * *