US20260160454A1
COOLING ARRANGEMENT FOR A THERMOELECTRIC COOLING MODULE
Publication
Application
Classifications
IPC Classifications
CPC Classifications
Applicants
Vertiv Corporation
Inventors
Srinivasan Natarajan, Pramod Dalvi, Utkarsh Diliprao Charapale, Kishan Jaysukh-Bhai Jethva
Abstract
A cooling system for a TEC module may include a cold plate including a base and a top body mounted thereon at a predetermined distance from the base, where the base and the top body may be configured to create an enclosure therebetween to facilitate fluid flow. The cold plate may include an inlet and an outlet, where the inlet and outlet may be configured to allow fluid to flow through the enclosure. The cold plate may include a plurality of internal ribs configured on the base, where the plurality of internal ribs may include a plurality of holes configured to facilitate fluid dispersion and turbulence. The cold plate may include a plurality of ridges configured on the base between a pair of the plurality of internal ribs, where the plurality of ridges may be configured to disrupt laminar fluid flow and create turbulence to enhance heat transfer efficiency.
Figures
Description
[0001] The present application claims the benefit of India Provisional Application No. 202421096844, filed December 7, 2024, which is herein incorporated by reference in the entirety.
TECHNICAL FIELD
[0002] The present disclosure relates to the field of heat transfer, and more particularly to, a cooling arrangement for thermoelectric cooling modules.
BACKGROUND
[0003] A thermoelectric cooling (TEC) module is a type of solid-state device that utilizes the Peltier effect to create a temperature difference between a hot surface and a cold surface when an electric current is passed through it. TEC modules are widely used in various applications, including cooling electronic components, temperature control in scientific equipment, and even in energy harvesting systems. The TEC modules include n-type and p-type semiconductor materials, which are typically arranged alternatingly in a series and thermally connected in parallel. These semiconductor elements are encapsulated between ceramic plates, which provide structural support and facilitate heat transfer.
[0004] In conventional TEC systems, effective heat removal from the hot side of the TEC module is necessary to maintain efficient temperature at the cold side. Conventionally, heat sink with fan(s) are used to dissipate heat from the hot surface of the TEC module. However, conventional cooling arrangements introduce several drawbacks. For example, the ceramic plates that form the hot and cold surfaces of the TEC module are fragile and prone to failure due to the structural load of the attached heat sink. Further, the structural load of the attached heat sink tends to increase the mechanical stress on the ceramic plates which may cause premature failure of the module. Additionally, the fan attached to the heat sink induces vibration that may be transferred to the operative surface of the TEC module and can damage or disturb the integrity of the TEC module.
[0005] Further, in the conventional cooling arrangements there exists a temperature difference between the heat sink and the ambient environment. Such temperature differential affects the internal surface temperature of the thermoelectric cooling module, which reduces the efficiency of the heat removal process. Despite the use of fans and heat sinks, the efficiency of heat dissipation is often suboptimal, which leads to decreased performance of the thermoelectric cooling module in high-demand environments.
[0006] Therefore, it would be desirable to provide a cooling arrangement for the thermoelectric cooling module that cures the shortfalls of the previous approaches identified above.
SUMMARY
[0007] In embodiments, a cooling system for a thermoelectric cooling (TEC) module, the cooling system including: a cold plate configured to be mounted on a surface of a hot side of the TEC module, the cold plate including: a base and a top body mounted thereon at a predetermined distance from the base, wherein the base and the top body are configured to create an enclosure therebetween to facilitate fluid flow; an inlet and an outlet defined on the cold plate, wherein the inlet and outlet are configured to allow fluid to flow through the enclosure; a plurality of internal ribs configured on the base, the plurality of internal ribs including a plurality of holes configured to facilitate fluid dispersion and turbulence; and a plurality of ridges configured on the base between a pair of the plurality of internal ribs, the plurality of ridges configured to disrupt laminar fluid flow and create turbulence to enhance heat transfer efficiency.
[0008] In embodiments, a cooling system for a thermoelectric cooling (TEC) module, the cooling system including: a cold plate configured to be mounted on a surface of a hot side of the TEC module, the cold plate including: a base and a top body mounted thereon at a predetermined distance from the base, wherein the base and the top body are configured to create an enclosure therebetween to facilitate fluid flow; an inlet and an outlet defined on the cold plate, wherein the inlet and outlet are configured to allow fluid to flow through the enclosure; a plurality of internal ribs configured on the base, the plurality of internal ribs including a plurality of holes configured to facilitate fluid dispersion and turbulence; and a plurality of ridges configured on the base between a pair of the plurality of internal ribs, the plurality of ridges configured to disrupt laminar fluid flow and create turbulence to enhance heat transfer efficiency; a heat pipe including an evaporator section and a condenser section; and a holding plate configured to couple the heat pipe to the TEC module.
[0009] In embodiments, a cooling system for a thermoelectric cooling (TEC) module, the cooling system including: a cold plate configured to be mounted on a surface of a hot side of the TEC module, the cold plate including: a base and a top body mounted thereon at a predetermined distance from the base, wherein the base and the top body are configured to create an enclosure therebetween to facilitate fluid flow; an inlet and an outlet defined on the cold plate, wherein the inlet and outlet are configured to allow fluid to flow through the enclosure; a plurality of internal ribs configured on the base, the plurality of internal ribs including a plurality of holes configured to facilitate fluid dispersion and turbulence; and a plurality of ridges configured on the base between a pair of the plurality of internal ribs, the plurality of ridges configured to disrupt laminar fluid flow and create turbulence to enhance heat transfer efficiency; a heat sink configured to be in operative configuration with a surface of a cold side of the TEC module; and a fan, wherein the fan and the heat sink are enclosed within a thermal load confinement, wherein the fan is configured to conduct forced convection with the heat sink to extract heat from the thermal load, wherein the TEC module is configured to extract heat from the heat sink and redirect the heat onto the cold plate.
[0010] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not necessarily restrictive of the invention as claimed. The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the general description, serve to explain the principles of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The numerous advantages of the disclosure may be better understood by those skilled in the art by reference to the accompanying figures in which:
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DETAILED DESCRIPTION
[0031] Reference will now be made in detail to the subject matter disclosed, which is illustrated in the accompanying drawings. The present disclosure has been particularly shown and described with respect to certain embodiments and specific features thereof. The embodiments set forth herein are taken to be illustrative rather than limiting. It should be readily apparent to those of ordinary skill in the art that various changes and modifications in form and detail may be made without departing from the spirit and scope of the disclosure.
[0032] The terminology used, in the present disclosure, is only for the purpose of explaining a particular embodiment and such terminology shall not be considered to limit the scope of the present disclosure. As used in the present disclosure, the forms "a,” "an," and "the" may be intended to include the plural forms as well, unless the context clearly suggests otherwise. The terms "comprises," "comprising," “including,” and “having,” are open ended transitional phrases and therefore specify the presence of stated features, elements, modules, units and/or components, but do not forbid the presence or addition of one or more other features, elements, components, and/or groups thereof.
Definitions
[0033] The term ‘thermoelectric cooling module’ herein refers to a solid-state device that generates a temperature difference between its two surfaces when an electric current passes through it, enabling one side to cool while the other side heats. It is commonly used for precise temperature control in applications such as refrigeration, electronics cooling, and energy harvesting.
[0034] The term "thermal load" herein refers to the amount of heat energy generated by a component, system, or environment that must be managed or dissipated to maintain desired operational temperatures. In the context of thermoelectric cooling (TEC) modules, the thermal load may include a body, an enclosure such as a cabinet, or any other entity that requires cooling. It directly influences the cooling capacity and performance requirements of the TEC module.
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[0036] In conventional TEC systems 50, as shown in
[0037] Embodiments of the present disclosure are directed to a cooling system for a thermoelectric cooling module. In particular, embodiments of the present disclosure are directed to a cooling system that incorporates a cold plate, heat pipe, or combinations thereof, configured to enhance heat removal from the hot side of the TEC module. For example, the system may utilize a cold plate assembly with circulating fluid and structural features that promote turbulence, thereby improving heat transfer efficiency and maintaining the hot surface temperature close to ambient conditions. In this regard, the cooling system of the present disclosure addresses mechanical stress, vibration, and mounting challenges associated with conventional systems, resulting in improved reliability and performance of thermoelectric cooling modules.
[0038] The present disclosure described hereinabove has several technical advantages including, but not limited to, a cooling system for a thermoelectric cooling module that can: (i) allow effective removal of heat while maintaining the temperature of the hot surface close to ambient environment temperature; (ii) minimize mechanical stress on an operative surface of the thermoelectric cooling module; (iii) eliminate vibrations caused due to the operation of the cooling system; and (iv) facilitate ease of mounting to the surface of the thermoelectric cooling module.
[0039] The present disclosure addresses these limitations by introducing a cooling system 100 for a TEC module 56, which will be described with reference to
[0040]The system 100 may include a TEC module 56 including a cold side 52 and a hot side 54. Referring generally to
[0041] Referring generally to
[0042] It is contemplated herein that fluid particles, due to their higher heat capacity and specific heat compared to ambient air, are significantly more effective in heat removal applications. As such, in some cases, it may be advantageous to replace a conventional heat sink assembly 61, as shown in
[0043]In an embodiment, the cold plate 102 may be operatively connected to the TEC module 56. For example, the cold plate 102 may be positioned on the surface of the hot side 54 of the TEC module 56 configured to receive heat from the TEC module 56. The cold plate 102 may include an inlet 116 and an outlet 118 for cooling fluid that enters the cold plate 102, as shown in
[0044] The cold plate 102 may be in operative configuration with fluid circulating conduits herein referred to as a cold plate tube 114, as shown in
[0045]Referring to
[0046]Turbulence may be achieved through strategically placing at least one of one or more baffles, channels, and/or textured surfaces within the cold plate 102. For example, as the fluid and fluid particles flow through the cold plate 102, these baffles/channels/textured surfaces can disrupt the smooth, laminar flow of the fluid, creating turbulent flow patterns. Turbulence significantly enhances heat transfer by increasing the interaction between the fluid and the surfaces of the cold plate 102. In laminar flow, only the fluid layers closest to the surface participate effectively in heat transfer, as the outer layers move relatively slowly and exhibit minimal mixing. However, turbulence disrupts these fluid layers, causing continuous mixing of the fluid. This mixing of fluid, so that more fluid particles are in contact with the hot surface and are actively exchanging heat.
[0047]The base 104 of the cold plate 102 may include a series of internal ribs 120 arranged in an alternating pattern to facilitate controlled fluid flow and turbulence, potentially enhancing thermal performance. The internal ribs 120 may further include a plurality of holes 122 configured thereon to allow fluid to disperse while flowing therethrough, as shown in
[0048] It is contemplated herein that the cold plate 102 may accommodate a variety of installation orientations, such as horizontal (as shown in
[0049] In embodiments, where the cold plate 102 is mounted vertically (as shown in
[0050]In embodiments, as shown in
[0051] In embodiments, as shown in
[0052] In embodiments, as shown in
[0053] In embodiments, as shown in
[0054] For purposes of the present disclosure, the term “mini water tank” refers to a compact reservoir that serves as a storage unit for cooling fluid within the cold plate assembly. It is designed to hold a relatively small volume of fluid, making it suitable for applications where space is limited or where the required heat extraction is moderate. The mini water tank ensures that the fluid pump can continuously circulate cooling fluid through the system, supporting efficient thermal management. Conversely, for purposes of the present disclosure, the term “big water tank” denotes a larger reservoir intended to store a greater quantity of cooling fluid. This tank is utilized in scenarios where the thermal load is higher, or extended heat extraction capacity is needed. By accommodating a larger volume of fluid, the big water tank enables the cooling system to maintain effective temperature control over prolonged periods and manage more substantial heat loads.
[0055] In embodiments, as shown in
[0056] Referring generally to
[0057]In embodiments, as shown in
[0058] In embodiments, as shown in
[0059] In embodiments, as shown in
[0060] Referring generally to
[0061]Referring to
[0062]Referring to
Example Embodiment
[0063]In an exemplary embodiment, different cooling systems were tested for determining their efficiency in cooling the TEC module. The parameters considered are as follows: (i) the cabinet volume defined by dimensions: 250 mm (Height) x 325 mm (width) x 160 mm (Depth); (ii) the material used for the test is cardboard box; (iii) ambient temperature during the test of 30.8 degree Celsius; (iv) Power supplied - 5 V, 2 Amp; (v) TEC module “TEC1-12706”; and (vi) Duration of test - 60 minutes. The cooling systems included a TEC module provided with a conventional fan assembly and a TEC module provided with a cold plate.
[0064] For the TEC module with the fan assembly, it was observed that hot side temperature was 37.3 degree Celsius whereas temperature inside the box was 27.6 degree Celsius. The temperature inside the box dropped by 3.2 degree Celsius below the ambient temperature.
[0065]For the TEC module with the cold plate arrangement of the present disclosure, it was observed that the hot side temperature was 29.9-30.3 degree Celsius, whereas temperature inside the box was 18.3-23.2 degree Celsius. The temperature inside the box was dropped by approximately 10 degree Celsius below the ambient temperature.
[0066] The foregoing description of the embodiments has been provided for purposes of illustration and not intended to limit the scope of the present disclosure. Individual components of a particular embodiment are generally not limited to that particular embodiment, but, are interchangeable. Such variations are not to be regarded as a departure from the present disclosure, and all such modifications are considered to be within the scope of the present disclosure.
[0067] The embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the following description.
[0068] Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[0069] The foregoing description of the specific embodiments so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
[0070] Any discussion of devices, articles or the like that has been included in this specification is solely for the purpose of providing a context for the disclosure. It is not to be taken as an admission that any or all of these matters form a part of the prior art base or were common general knowledge in the field relevant to the disclosure as it existed anywhere before the priority date of this application.
[0071] While considerable emphasis has been placed herein on the components and component parts of the preferred embodiments, it will be appreciated that many embodiments can be made and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation.
Claims
What is claimed:
1. A cooling system for a thermoelectric cooling (TEC) module, the cooling system comprising:
a cold plate configured to be mounted on a surface of a hot side of the TEC module, the cold plate comprising:
a base and a top body mounted thereon at a predetermined distance from the base, wherein the base and the top body are configured to create an enclosure therebetween to facilitate fluid flow;
an inlet and an outlet defined on the cold plate, wherein the inlet and outlet are configured to allow fluid to flow through the enclosure;
a plurality of internal ribs configured on the base, the plurality of internal ribs comprising a plurality of holes configured to facilitate fluid dispersion and turbulence; and
a plurality of ridges configured on the base between a pair of the plurality of internal ribs, the plurality of ridges configured to disrupt laminar fluid flow and create turbulence to enhance heat transfer efficiency.
2. The cooling system of
a plurality of projections configured on an operative inner surface of the top body, the plurality of projections configured to redirect bypassed fluid back into a flow cycle.
3. The cooling system of
4. The cooling system of
5. The cooling system of
a radiator configured to fluidly communicate with the plurality of cold plate tubes, the radiator configured to exchange heat with the circulated coolant fluid; and
a fluid pump configured to fluidly communicate with the plurality of cold plate tubes to facilitate circulation of the coolant fluid therethrough.
6. The cooling system of
a water tank configured to fluidly communicate with the fluid pump and the plurality of cold plate tubes.
7. The cooling system of
a heat pipe including an evaporator section and a condenser section.
8. The cooling system of
9. The cooling system of
a heat sink; and
a fan, wherein the heat sink and the fan are configured to disperse heat from the heat pipe to ambient air.
10. The cooling system of
a heat sink configured to be in operative configuration with a surface of a cold side of the TEC module; and
a fan, wherein the fan and the heat sink are enclosed within a thermal load confinement, wherein the fan is configured to conduct forced convection with the heat sink to extract heat from a thermal load of the thermal load confinement,
wherein the TEC module is configured to extract heat from the heat sink and redirect the heat onto the cold plate.
11. The cooling system of
a vertical orientation or a horizontal orientation.
12. A cooling system for a thermoelectric cooling (TEC) module, the cooling system comprising:
a cold plate configured to be mounted on a surface of a hot side of the TEC module, the cold plate comprising:
a base and a top body mounted thereon at a predetermined distance from the base, wherein the base and the top body are configured to create an enclosure therebetween to facilitate fluid flow;
an inlet and an outlet defined on the cold plate, wherein the inlet and outlet are configured to allow fluid to flow through the enclosure;
a plurality of internal ribs configured on the base, the plurality of internal ribs comprising a plurality of holes configured to facilitate fluid dispersion and turbulence; and
a plurality of ridges configured on the base between a pair of the plurality of internal ribs, the plurality of ridges configured to disrupt laminar fluid flow and create turbulence to enhance heat transfer efficiency;
a heat pipe including an evaporator section and a condenser section; and
a holding plate configured to couple the heat pipe to the TEC module.
13. The cooling system of
14. The cooling system of
a heat sink; and
a fan, wherein the heat sink and the fan are configured to disperse heat from the heat pipe to ambient air.
15. The cooling system of
a plurality of projections configured on an operative inner surface of the top body, the plurality of projections configured to redirect bypassed fluid back into a flow cycle.
16. The cooling system of
17. The cooling system of
18. The cooling system of
a radiator configured to fluidly communicate with the plurality of cold plate tubes, the radiator configured to exchange heat with the circulated coolant fluid; and
a fluid pump configured to fluidly communicate with the plurality of cold plate tubes to facilitate circulation of the coolant fluid therethrough.
19. The cooling system of
a water tank configured to fluidly communicate with the fluid pump and the plurality of cold plate tubes.
20. A cooling system for a thermoelectric cooling (TEC) module, the cooling system comprising:
a cold plate configured to be mounted on a surface of a hot side of the TEC module, the cold plate comprising:
a base and a top body mounted thereon at a predetermined distance from the base, wherein the base and the top body are configured to create an enclosure therebetween to facilitate fluid flow;
an inlet and an outlet defined on the cold plate, wherein the inlet and outlet are configured to allow fluid to flow through the enclosure;
a plurality of internal ribs configured on the base, the plurality of internal ribs comprising a plurality of holes configured to facilitate fluid dispersion and turbulence; and
a plurality of ridges configured on the base between a pair of the plurality of internal ribs, the plurality of ridges configured to disrupt laminar fluid flow and create turbulence to enhance heat transfer efficiency;
a heat sink configured to be in operative configuration with a surface of a cold side of the TEC module; and
a fan, wherein the fan and the heat sink are enclosed within a thermal load confinement, wherein the fan is configured to conduct forced convection with the heat sink to extract heat from the thermal load, wherein the TEC module is configured to extract heat from the heat sink and redirect the heat onto the cold plate.