COOLANT DISTRIBUTION UNIT
A coolant distribution unit includes plural fluid inlets, plural fluid outlets and a piping channel. The piping channel is connected with the fluid inlets and the fluid outlets. The sensed temperature or the measured pressure or flowrate of a working fluid in the piping channel is transmitted to an adaptive control module. The sensed temperature or the measured pressure or flowrate is further transmitted to an external monitoring center. Consequently, the supervisor of the monitoring center can manage and control the operating situation of the coolant distribution unit.
This application claims priority to U.S. Provisional Patent Application No. 62/597,963 filed Dec. 13, 2017, the contents of which are incorporated herein by reference.
FIELD OF THE INVENTIONThe present invention relates to a field of a coolant distribution unit (CDU), and more particularly to a coolant distribution unit for a machine room/rack cabinet liquid cooling system.
BACKGROUND OF THE INVENTIONWith the increasing development and popularization of science and technology, various electronic computing devices such as network storage devices or servers have been essential parts of people's daily lives. Generally, these electronic computing devices are stored in a rack cabinet that is made of cold-rolled steel or alloy. Consequently, these electronic computing devices are protected from electromagnetic interference and arranged in an orderly and neat manner. Moreover, the electronic computing devices in the rack cabinet can be easily maintained or repaired in the future.
With the advent of big data and the Internet era, the processing power of the electronic computing device is increasing and the amount of the generated heat is large. It is important to effectively dissipate the heat from the electronic computing devices in the rack cabinet so as to increase the performance and the use lives of these electronic computing devices. In views of the power-saving benefit, it is important to achieve the proper heat dissipation efficacy with less power consumption.
The cold plate inlet 711 of each cold plate 71 is in fluid communication with the corresponding first manifold outlet 772 of the first fluid manifold 77. The cold plate outlet 712 of each cold plate 71 is in fluid communication with the corresponding second manifold inlet 781 of the second fluid manifold 78. The first fluid inlet 751 of the coolant distribution unit 75 is in communication with the second manifold outlet 782 of the second fluid manifold 78. The first fluid outlet 752 of the coolant distribution unit 75 is in communication with the first manifold inlet 771 of the first fluid manifold 77. In other words, a first fluid circulation loop (also referred as an internal circulation loop) is defined by the plural cold plates 71, the manifold device 72 and the coolant distribution unit 75 collaboratively.
A first working fluid (not shown) is filled in the first fluid circulation loop. In the rack-type heat dissipation system 7, the manifold device 72 is used for connecting associated conduits, homogenizing the first working fluid and transferring the first working fluid. The coolant distribution unit 75 is capable of uniformly or intelligently transferring the first working fluid to the cold plates 71 through the first fluid manifold 77 of the manifold device 72 according to the practical requirements.
The chiller inlet 761 of the chiller 76 is in fluid communication with the second fluid outlet 754 of the coolant distribution unit 75. The chiller outlet 762 of the chiller 76 is in fluid communication with the second fluid inlet 753 of the coolant distribution unit 75. That is, a second fluid circulation loop (also referred as an external circulation loop) is defined by the chiller 76 and the coolant distribution unit 75 collaboratively. Moreover, a second working fluid (not shown) is filled in the second fluid circulation loop. The chiller 76 may be considered as a back-end heat dissipation mechanism for removing the heat from the first working fluid that is transferred through the first fluid circulation loop. That is, the first working fluid in the first fluid circulation loop and the second working fluid in the second fluid circulation loop exchange heat in the coolant distribution unit 75, wherein the first working fluid and the second working fluid are not mixed together.
The operations of the conventional rack-type heat dissipation system 7 will be described as follows. When the first working fluid flows through the cold plate 71 along the first fluid circulation loop, the first working fluid is heated by the heat source of the electronic computing device 9 corresponding to the cold plate 71. Then, the heated first working fluid is transferred to the coolant distribution unit 75 through the second fluid manifold 78 of the manifold device 72. When the second working fluid flows through the coolant distribution unit 75 along the second fluid circulation loop, the second working fluid is heated by the first working fluid that is introduced into the coolant distribution unit 75. After the heated second working fluid is outputted from the coolant distribution unit 75, the second working fluid is transferred to the chiller 76 through the chiller inlet 761. Consequently, the second working fluid is cooled down. After the second working fluid is cooled down, the second working fluid is transferred to the coolant distribution unit 75 again. Since the first working fluid flowing into the coolant distribution unit 75 along the first fluid circulation loop exchanges heat with the second working fluid, the first working fluid is cooled down. After the first working fluid is cooled down, the first working fluid is transferred to the cold plate 71 again through the first fluid manifold 77 of the manifold device 72. The above steps are repeatedly done to circulate the first working fluid along the first fluid circulation loop and circulate the second working fluid along the second fluid circulation loop. Since the heat of the electronic computing device 9 is dissipated to the low-temperature site, the efficacy of reducing the temperature of the first working fluid is enhanced.
However, as the science and technology change very quickly, the rack cabinets for storing the electronic computing devices 9 have diversified specifications and designs according to different requirements. Even if the rack cabinets comply with the same specifications, the heat dissipation demands are not always identical. In other words, the conventional rack-type heat dissipation system 7 still has some drawbacks. For example, in case that the rack cabinet or the electronic computing devices 9 is abnormal and a great deal of heat is abruptly increased, the coolant distribution unit 75 is unable to adjust the flowrate of the working fluid according to the specification of the rack cabinet. Under this circumstance, the heat dissipating capacities of some rack cabinets in some abnormal situations are insufficient. Therefore, it is important to overcome the above drawbacks.
SUMMARY OF THE INVENTIONFor increasing the application value of the coolant distribution unit, the present invention provides a novel coolant distribution unit. The coolant distribution unit has the function of adaptively adjusting the flowrate of a working fluid. Consequently, the energy utilization of the coolant distribution unit is optimized.
For increasing the application value of the coolant distribution unit, the present invention provides a novel coolant distribution unit. The coolant distribution unit comprises an adaptive control module. The data about the operating situation of the coolant distribution unit are transmitted to an external device through the adaptive control module. Consequently, the supervisor at the remote side can realize the operating situation of the coolant distribution unit in real time and further control the operating situation of the coolant distribution unit.
In accordance with an aspect of the present invention, there is provided a coolant distribution unit. The coolant distribution unit includes plural fluid inlets, plural fluid outlets and a piping channel. The piping channel is connected with the fluid inlets and the fluid outlets. The coolant distribution unit includes a sensing module, a flowrate control module and an adaptive control module. The sensing module senses at least one of the fluid inlets, the fluid outlets and the piping channel to obtain a sensed data. The flowrate control module controls a flowrate of a working fluid in the piping channel. The adaptive control module is electrically connected with the sensing module and the flowrate control module. The adaptive control module receives the sensed data and transmits the sensed data to an external device. The external device issues a control command to the adaptive control module according to the sensed data. The adaptive control module controls an operation of the flowrate control module according to the control command.
In accordance with another aspect of the present invention, there is provided a coolant distribution unit. The coolant distribution unit includes plural fluid inlets, plural fluid outlets and a piping channel. The piping channel is connected with the fluid inlets and the fluid outlets. The coolant distribution unit includes a sensing module, a flowrate control module and an adaptive control module. The sensing module senses at least one of the fluid inlets, the fluid outlets and the piping channel to obtain a sensed data. The flowrate control module controls a flowrate of a working fluid in the piping channel. The adaptive control module is electrically connected with the sensing module and the flowrate control module. The adaptive control module receives the sensed data. The adaptive control module controls an operation of the flowrate control module according to the sensed data.
The above objects and advantages of the present invention will become more readily apparent to those ordinarily skilled in the art after reviewing the following detailed description and accompanying drawings, in which:
For illustration, the structures, organizations or components of the coolant distribution unit shown in the drawings of the present invention are in scale with the elements of the practical product. According to the requirements of descriptions, the components may be scaled up or scaled down in an unequal proportion. The implementations of the coolant distribution unit not limited by the drawings.
In this context, the working fluid is the fluid that is used in a heat exchanger and is in the liquid sate in the normal temperature. Generally, water is the widely-used fluid. It is noted that the example of the working fluid is not restricted. In other embodiments, the working fluid is aqueous solution or other organic solution. At different temperatures, the working fluid has the corresponding vapor-liquid equilibrium pressures. The working fluid retained in, transferred through or moved across the piping channel or the overall system is a liquid-state fluid. In practice, the working fluid may be a gaseous working fluid.
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In this embodiment, the fluid storage module 12 is arranged between the heat exchanger 10 and the power module 14, but is not limited thereto. In some other embodiments, the positions of the fluid storage module 12 and the power module 14 are exchanged. That is, the power module 14 is arranged between the heat exchanger 10 and the fluid storage module 12.
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In an embodiment, the proportional valve 86 is enabled to adjust the flowrate of the low temperature working fluid 33 from the second fluid inlet 13. The operation of the proportional valve 86 is controlled by the adaptive control module 20. For example, if the temperature sensed by the thermal sensor 62 is too high, the sensed data is transmitted to the monitoring center 24 outside the coolant distribution unit 2 through the adaptive control module 20. After the sensed value is judged, the supervisor of the monitoring center 24 issues a control command to the adaptive control module 20. According to the control command, the adaptive control module 20 controls or adjusts the operation of the proportional valve 86. During the operation of the proportional valve 86, the flowrate of the low temperature working fluid 33 from the second fluid inlet 13 is increased. Consequently, the operation of the coolant distribution unit 2 is optimized.
As mentioned above, the coolant distribution unit is in communication with the external monitoring center through the adaptive control module 20. The information about the heat exchange efficiency of the coolant distribution unit is transmitted to the external device to be referred by the supervisor of the monitoring center. The coolant distribution unit can receive the control command from the external device through the adaptive control module 20. According to the control command, the heat exchange efficiency of the coolant distribution unit is further optimized. The arrangement of the adaptive control module 20 has the following benefit. For example, even if the resources in the environment are limited, the communication control of the adaptive control module 20 of the coolant distribution unit can make full use of the energy source. When the electronic device (e.g., a server or a workstation) in the chassis is operated in the peak period and a great deal of waste heat needs to be dissipated away, the supervisor at the remote side can realize the operational peak through the adaptive control module 20. Moreover, the supervisor may issue the control command to the adaptive control module 20. According to the control command, the adaptive control module 20 controls the operation of the flowrate control module 18 to increase the flowrate of the low temperature working fluid 33 from the second fluid inlet 13. Whereas, when the server or the workstation is operated in an off-peak period and a small amount of waste heat needs to be removed, the adaptive control module 20 controls the operation of the flowrate control module 18 according to the control command. Consequently, the flowrate of the low temperature working fluid 33 from the second fluid inlet 13 is decreased. The arrangement of the adaptive control module 20 has another benefit of avoiding the closed adaptive control of the coolant distribution unit. Since the adaptive control module 20 is in communication with the external device in the wired communication manner or the wireless communication manner, the operating situation of the coolant distribution unit can be transmitted to the external device. Moreover, when the flowrate control module 18 is enabled, the sensed data about the values of the temperature and the flowrate can be transmitted to the external device through the adaptive control module 20.
While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all modifications and similar structures.
Claims
1. A coolant distribution unit comprising plural fluid inlets, plural fluid outlets and a piping channel connected with the fluid inlets and the fluid outlets, the coolant distribution unit comprising:
- a sensing module sensing at least one of the fluid inlets, the fluid outlets and the piping channel to obtain a sensed data;
- a flowrate control module controlling a flowrate of a working fluid in the piping channel; and
- an adaptive control module electrically connected with the sensing module and the flowrate control module, wherein the adaptive control module receives the sensed data and transmits the sensed data to an external device, wherein the external device issues a control command to the adaptive control module according to the sensed data, and the adaptive control module controls an operation of the flowrate control module according to the control command.
2. The coolant distribution unit according to claim 1, wherein the sensing module comprises at least one thermal sensor, and the at least one thermal sensor senses at least one of the fluid inlets, the fluid outlets and the piping channel to obtain the sensed data, wherein the sensed data is a temperature value.
3. The coolant distribution unit according to claim 1, wherein the sensing module comprises at least one flow meter, and the at least one flow meter senses at least one of the fluid inlets, the fluid outlets and the piping channel to obtain the sensed data, wherein the sensed data is a flowrate value.
4. The coolant distribution unit according to claim 1, wherein the sensing module comprises at least one pressure meter, and the at least one pressure meter senses at least one of the fluid inlets, the fluid outlets and the piping channel to obtain the sensed data, wherein the sensed data is a pressure value.
5. The coolant distribution unit according to claim 1, wherein the flowrate control module comprises a proportional valve, and the flowrate of the working fluid in the piping channel is adjusted through the proportional valve.
6. The coolant distribution unit according to claim 1, further comprising a heat exchange module, wherein the heat exchange module is connected with the piping channel, and the heat exchange module is in communication with the plural fluid inlets and the plural fluid outlets through the piping channel.
7. The coolant distribution unit according to claim 6, wherein the heat exchange module comprises a heat exchanger, a fluid storage module and a power module, the plural fluid inlets include a first fluid inlet and a second fluid inlet, and the plural fluid outlets include a first fluid outlet and a second fluid outlet, wherein after a high temperature working fluid is fed into the first fluid inlet and transferred through the heat exchanger, the fluid storage module and the power module sequentially, the high temperature working fluid is cooled down and outputted from the first fluid outlet, wherein after a low temperature working fluid is fed into the second fluid inlet and transferred through the heat exchanger, the low temperature working fluid is heated and outputted from the second fluid outlet.
8. The coolant distribution unit according to claim 7, wherein the piping channel is connected between the first liquid inlet and the heat exchanger, between the heat exchanger and the fluid storage module, between the fluid storage module and the power module, between the power module and the first fluid outlet, and between the second fluid inlet and the second fluid outlet.
9. The coolant distribution unit according to claim 7, wherein the heat exchanger is a plate-type heat exchanger, where the high temperature working fluid fed into the first fluid inlet and the low temperature working fluid fed into the second fluid inlet exchange heat in the heat exchanger.
10. The coolant distribution unit according to claim 7, wherein the fluid storage module includes a fluid storage tank, the working fluid cooled by the heat exchanger is temporarily stored in the fluid storage tank, and the power module comprises at least one pump, wherein the working fluid cooled by the heat exchanger is moved from the fluid storage module to the first fluid outlet by the pump.
11. A coolant distribution unit comprising plural fluid inlets, plural fluid outlets and a piping channel connected with the fluid inlets and the fluid outlets, the coolant distribution unit comprising:
- a sensing module sensing at least one of the fluid inlets, the fluid outlets and the piping channel to obtain a sensed data;
- a flowrate control module controlling a flowrate of a working fluid in the piping channel; and
- an adaptive control module electrically connected with the sensing module and the flowrate control module, wherein the adaptive control module receives the sensed data, and the adaptive control module controls an operation of the flowrate control module according to the sensed data.
12. A coolant distribution unit, comprising:
- a heat exchanger;
- a fluid storage module;
- a power module;
- a sensing module;
- a flowrate control module;
- a first fluid inlet and a second fluid inlet;
- a first fluid outlet and a second fluid outlet, wherein after a high temperature working fluid is fed into the first fluid inlet and transferred through the heat exchanger, the fluid storage module and the power module sequentially, the high temperature working fluid is cooled down and outputted from the first fluid outlet, wherein after a low temperature working fluid is fed into the second fluid inlet and transferred through the heat exchange, the low temperature working fluid is heated and outputted from the second fluid outlet;
- a piping channel connected between the first fluid inlet and the heat exchanger, between the heat exchanger and the fluid storage module, between the fluid storage module and the power module, between the power module and the first fluid outlet and between the second fluid inlet and the second fluid outlet, wherein the sensing module senses the piping channel to obtain a sensed data, and a flowrate of the high temperature working fluid or the low temperature working fluid in the piping channel is controlled by the flowrate control module; and
- an adaptive control module electrically connected with the sensing module and the flowrate control module, wherein the adaptive control module receives the sensed data and transmits the sensed data to an external device,
- wherein the adaptive control module controls an operation of a flowrate control module according to the sensed data, or the adaptive control module receives a control command from the external device and controls the operation of the flowrate control module according to the control command.
Type: Application
Filed: Dec 12, 2018
Publication Date: Jun 13, 2019
Inventors: CHIEN-AN CHEN (New Taipei City), MU-SHU FAN (New Taipei City), CHIEN-YU CHEN (New Taipei City)
Application Number: 16/217,139