The present disclosure relates to heat exchangers, more specifically to heat exchangers with pins disposed in flow channels thereof.
Traditional heat exchangers can be cast or pieced together to form at least one channel defined therein for flow to pass therethrough. Certain heat exchangers include pins that extend across these channels which can increase thermal efficiency of the heat exchanger as well as providing added structural support for the channel. These pins are cylindrical.
Such conventional methods and systems have generally been considered satisfactory for their intended purpose. However, there is still a need in the art for improved heat exchangers with enhanced efficiency over traditional heat exchangers. The present disclosure provides a solution for this need.
A heat exchanger includes a body defining a flow channel, and a pin extending across the flow channel, the pin including an at least partially non-cylindrical shape. The pin can be a double helix pin including two spiral branches defining a double helix shape. The two branches can include a uniform winding radius.
In certain embodiments, the two branches include a non-uniform winding radius. The non-uniform winding radius can include a base radius and a midpoint radius, wherein the midpoint radius is smaller than the base radius. The two branches can be joined together by one or more cross-members.
In certain embodiments, the pin can include a plurality of branches extending away from a trunk portion of the pin. At least one of the plurality of branches can curve back to the trunk portion of the pin to form a loop.
The trunk portion and/or one or more of the branches can include a hole defined therethrough. The branches can connect to an electronics side of the body or any other suitable portion of the body, for example, to improve thermal transfer. In certain embodiments, the pin can include a plurality of multi-branches connected to each other.
The heat exchanger can include a plurality of pins as described herein. The plurality of pins can include pins of different shape or pins of only one shape. The plurality of pins can be defined in the channel in a predetermined pattern relative to each other.
These and other features of the systems and methods of the subject disclosure will become more readily apparent to those skilled in the art from the following detailed description taken in conjunction with the drawings.
So that those skilled in the art to which the subject disclosure appertains will readily understand how to make and use the devices and methods of the subject disclosure without undue experimentation, embodiments thereof will be described in detail herein below with reference to certain figures, wherein:
Reference will now be made to the drawings wherein like reference numerals identify similar structural features or aspects of the subject disclosure. For purposes of explanation and illustration, and not limitation, an illustrative view of an embodiment of a heat exchanger in accordance with the disclosure is shown in
Referring to
As shown in
The two branches 103a, 103b can include a uniform winding radius such that the branches 103a, 103b wind around a constant diameter from top to bottom. Referring to
Referring to
Referring additionally to
Referring to
In certain embodiments, referring to
It is contemplated that the heat exchanger 99 can include a plurality of pins that include pins of different shape or pins of only one shape. The plurality of pins can be defined in the channel 101 in a predetermined pattern relative to each other or can be defined randomly.
While the pins as described above are shown to be of a double helix or branching shape, any suitable at least partially non-cylindrical (e.g., cylindrical pins with holes therein) is contemplated herein.
A method includes additively manufacturing a pin as described above. The method can include additively manufacturing the body 100 to define the channel 101 along with the pins as described above. In embodiments, it is contemplated that the pins as described above can be additively manufactured in channel 101 of a body 100 that was cast, cut, assembled, or otherwise formed to define the channel 101. Any other suitable methods of manufacturing the pins as described above are contemplated herein.
The methods and systems of the present disclosure, as described above and shown in the drawings, provide for heat transfer devices with superior properties including enhanced thermal efficiency. While the apparatus and methods of the subject disclosure have been shown and described with reference to embodiments, those skilled in the art will readily appreciate that changes and/or modifications may be made thereto without departing from the spirit and scope of the subject disclosure.
This application is a divisional application of U.S. application Ser. No. 14/579,120 filed on Dec. 22, 2014 the entire content of which is incorporated herein by reference.
Number | Name | Date | Kind |
---|---|---|---|
735945 | Clark | Aug 1903 | A |
855687 | Barnett | Jun 1907 | A |
3534814 | Renzi | Oct 1970 | A |
4638858 | Chu | Jan 1987 | A |
4798241 | Jarrett | Jan 1989 | A |
5158136 | Azar | Oct 1992 | A |
5915463 | Romero | Jun 1999 | A |
6119769 | Yu | Sep 2000 | A |
6173758 | Ward et al. | Jan 2001 | B1 |
7096934 | Harman | Aug 2006 | B2 |
9976815 | Roper | May 2018 | B1 |
20020053422 | Juslenius | May 2002 | A1 |
20040150956 | Conte | Aug 2004 | A1 |
20070131386 | Tsai | Jun 2007 | A1 |
20080066888 | Tong et al. | Mar 2008 | A1 |
20080186675 | Wang | Aug 2008 | A1 |
20090009964 | Suzuki | Jan 2009 | A1 |
20090145581 | Hoffman et al. | Jun 2009 | A1 |
20100173255 | Reifel | Jul 2010 | A1 |
20110079376 | Loong et al. | Apr 2011 | A1 |
20120285660 | Poltorak | Nov 2012 | A1 |
20130139541 | Seybold | Jun 2013 | A1 |
20130188317 | Ho | Jul 2013 | A1 |
Number | Date | Country |
---|---|---|
2928014 | Jan 1980 | DE |
1533475 | May 2005 | EP |
2204629 | Jul 2010 | EP |
62093965 | Apr 1987 | JP |
2005344946 | Dec 2005 | JP |
2006138538 | Jun 2006 | JP |
2014173419 | Oct 2014 | WO |
WO 2016075352 | Nov 2014 | WO |
Entry |
---|
Del Paso, Double-Helix Heat Exchanger, Espacenet English Translation of Description (Year: 2014). |
Higeta, JPS 6293965 Integrated Circuit Cooling Structure, Translation of Description to English, Oct. 21, 1985 (Year: 1985). |
HigetaKazuya, JP 62093965 A, 1987, English Translation of Description, (Year: 1987). |
Extended European Search Report, of the European Patent Office, dated Apr. 13, 2016, issued in corresponding European Patent Application No. 15201766.1. |
Extended European search report issued in corresponding EP Application No. 19177132.8 dated Sep. 30, 2019. |
Number | Date | Country | |
---|---|---|---|
20180335264 A1 | Nov 2018 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 14579120 | Dec 2014 | US |
Child | 16047411 | US |