CDU system and heat dissipation system

Abstract

A CDU system and a heat dissipation system, which relate to the technical field of heat dissipation equipment. The CDU system comprises a working medium pipe, a conductivity detector, and an ion exchanger. The conductivity detector is arranged on the working medium pipe, and the conductivity detector is used for measuring a conductivity value of a working medium in the working medium pipe. The ion exchanger is connected to the working medium pipe in parallel by means of a first pipe, and the first pipe is provided with a first valve member. When the conductivity value of the working medium in the working medium pipe does not meet a preset value, the degree of opening of the first valve member can be adjusted, so that the conductivity value of the working medium in the working medium pipe is adjusted to the preset value. When the conductivity value of the working medium in the working medium pipe does not meet the preset value (the conductivity value of the working medium in the working medium pipe is greater than or less than the preset value), a control module performs control to adjust the degree of opening of the first valve member, so that the conductivity value of the working medium in the working medium pipe is adjusted to the preset value, thereby ensuring the safe and reliable operation of the CDU system, and enabling the CDU system to actively intervene to adjust the conductivity value of the working medium in the working medium pipe.

Description

CDU system and cooling system

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 21, 2023, with application number 202311562074.X and invention name “CDU system and cooling system”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the technical field of heat dissipation equipment, and in particular to a CDU system and a heat dissipation system. Background Art

[0003] The cold plate liquid cooling system removes the heat generated by the heat generating unit by flowing through the refrigerant medium through the liquid cold plate. The heat-carrying refrigerant carries the heat outdoors for heat exchange with the outdoor air. The cooled refrigerant is redistributed to the liquid cold plate through the CDU system. The refrigerant circulates in this way to form a closed piping system.

[0004] Conventional CDU systems are only equipped with solution testing equipment such as conductivity meters and pH meters, which can only detect values ​​such as conductivity and pH of the working fluid solution in the CDU system.

[0005] However, when the conductivity value of the working fluid solution in the CDU system does not meet the requirements, it is necessary to manually adjust the properties of the working fluid solution in the CDU system. The CDU system has a poor ability to intervene and adjust the properties of the working fluid solution. Summary of the Invention

[0006] The object of the present invention is to provide a CDU system to solve the technical problem in the prior art that the CDU system has poor ability to intervene and adjust the properties of the working fluid solution.

[0007] The CDU system provided by the present invention includes a working fluid pipeline, a conductivity detector and an ion exchanger;

[0008] The conductivity detector is arranged on the working fluid pipeline, and is used to detect the conductivity value of the working fluid in the working fluid pipeline;

[0009] The ion exchanger is connected in parallel with the working medium pipeline via a first pipeline, and the first pipeline is provided with a first valve;

[0010] When the conductivity value of the working medium in the working medium pipeline does not meet the preset value, the opening of the first valve member can be adjusted to adjust the conductivity value of the working medium in the working medium pipeline to the preset value.

[0011] Furthermore, the ion exchanger includes an ion exchange resin module.

[0012] Furthermore, the first pipeline is provided with a first temperature detector, and the first temperature detector is used to detect the temperature value of the working medium flowing into the ion exchanger.

[0013] Furthermore, the first pipeline is also provided with a heat dissipation module;

[0014] When the temperature of the working fluid flowing into the ion exchanger is greater than a preset value, the heat dissipation module can reduce the temperature of the working fluid flowing into the ion exchanger so that the temperature of the working fluid flowing into the ion exchanger meets the preset value;

[0015] When the temperature of the working fluid flowing into the ion exchanger meets a preset value, the ion exchanger can achieve a maximum adsorption capacity.

[0016] Furthermore, the CDU system further includes a dry cooler, a liquid return pipe and a liquid supply pipe;

[0017] The dry cooler includes a heat exchange coil, a liquid return pipe is connected to the inlet of the heat exchange coil, and the liquid supply pipe is connected to the outlet of the heat exchange coil; the liquid return pipe, the heat exchange coil and the liquid supply pipe are an integrally formed structure, and the liquid return pipe, the heat exchange coil and the liquid supply pipe constitute the working fluid pipeline.

[0018] Furthermore, the CDU system further includes a third pipeline; one end of the third pipeline is connected to the liquid return pipe, and the other end of the third pipeline is connected to the liquid supply pipe, and the third pipeline is provided with a second valve.

[0019] Furthermore, a cooling fan is provided on one side of the dry cooler;

[0020] The liquid return pipe is provided with a liquid return temperature detector, which is used to detect the temperature value of the working medium in the liquid return pipe; the air cooler can adjust the speed of the air cooler according to the temperature value of the working medium in the liquid return pipe.

[0021] Furthermore, the CDU system further includes a first pump body and a second pump body; the first pump body and the second pump body are respectively connected to the liquid return pipe.

[0022] Furthermore, the liquid supply pipe is provided with a filter.

[0023] Another object of the present invention is to provide a heat dissipation system, including the CDU system provided by the present invention.

[0024] The CDU system provided by the present invention includes a working fluid pipeline, a conductivity detector and an ion exchanger; the conductivity detector is arranged on the working fluid pipeline and is used to detect the conductivity value of the working fluid in the working fluid pipeline; the ion exchanger is connected in parallel with the working fluid pipeline through a first pipeline, and the first pipeline is provided with a first valve; when the conductivity value of the working fluid in the working fluid pipeline does not meet a preset value, the opening of the first valve can be adjusted to adjust the conductivity value of the working fluid in the working fluid pipeline to the preset value. The conductivity detector is fixedly arranged on the working fluid pipeline. The conductivity detector can detect the conductivity value of the working fluid in the working fluid pipeline. The conductivity value can be uploaded to the control module (such as the host computer). When the conductivity value of the working fluid in the working fluid pipeline does not meet the preset value (the conductivity value of the working fluid in the working fluid pipeline is greater than or less than the preset value), the control module controls and adjusts the opening of the first valve member to adjust the conductivity value of the working fluid in the working fluid pipeline to the preset value, thereby ensuring the safe and reliable operation of the CDU system and solving the problem that the increase in conductivity of the working fluid during operation may cause the electrical components to be broken down and damaged. In addition, when the conductivity value of the working fluid in the working fluid pipeline does not meet the preset value, the CDU system can actively intervene to adjust the conductivity value of the working fluid in the working fluid pipeline, and the response speed is relatively fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] FIG1 is a system schematic diagram of a CDU system provided by an embodiment of the present invention.

[0027] Icons: 1- return liquid pressure sensor; 2- return liquid temperature sensor; 3- conductivity detector; 4- PH detector; 5- first drain valve; 6- liquid replenishment tank; 7- liquid replenishment pump; 8- first check valve; 9- first filter; 10- first butterfly valve; 11- expansion tank; 12- pump body inlet pressure sensor; 13- second butterfly valve; 14- third butterfly valve; 15- first pump body; 16- second pump body; 17- second check valve; 18- third check valve; 19- fourth butterfly valve; 20- fifth butterfly valve; 21- pump body outlet pressure sensor; 22- Safety valve; 23-first automatic exhaust valve; 24-dry cooler; 25-air cooler; 26-second automatic exhaust valve; 27-second drain valve; 28-first valve body; 29-ion exchanger; 30-sixth butterfly valve; 31-second valve body; 32-seventh butterfly valve; 33-filter inlet pressure sensor; 34-filter; 35-eighth butterfly valve; 36-ninth butterfly valve; 37-flow meter; 38-liquid supply pressure sensor; 39-liquid supply temperature detector; 40-liquid supply connection port; 41-liquid return connection port; 42-temperature and humidity sensor. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" and the like indicate positions or locations based on those shown in the accompanying drawings. These terms are intended only to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0030] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0031] The present invention provides a CDU system and a heat dissipation system. The following provides multiple embodiments to describe the CDU system and the heat dissipation system provided by the present invention in detail.

[0032] Example 1

[0033] The CDU system provided in this embodiment, as shown in Figure 1, includes a working fluid pipeline, a conductivity detector 3 and an ion exchanger 29; the conductivity detector 3 is arranged on the working fluid pipeline, and the conductivity detector 3 is used to detect the conductivity value of the working fluid in the working fluid pipeline; the ion exchanger 29 is connected in parallel with the working fluid pipeline through a first pipeline, and the first pipeline is provided with a first valve; when the conductivity value of the working fluid in the working fluid pipeline does not meet the preset value, the opening of the first valve can be adjusted to adjust the conductivity value of the working fluid in the working fluid pipeline to the preset value.

[0034] The conductivity detector 3 is fixedly arranged on the working fluid pipeline. The conductivity detector 3 can detect the conductivity value of the working fluid in the working fluid pipeline, and the conductivity value can be uploaded to the control module (such as the host computer). When the conductivity value of the working fluid in the working fluid pipeline does not meet the preset value (the conductivity value of the working fluid in the working fluid pipeline is greater than or less than the preset value), the control module controls and adjusts the opening of the first valve component to adjust the conductivity value of the working fluid in the working fluid pipeline to the preset value, thereby ensuring the safe and reliable operation of the CDU system and solving the problem that the increase in conductivity of the working fluid during operation may cause the electrical components to be broken down and damaged. In addition, when the conductivity value of the working fluid in the working fluid pipeline does not meet the preset value, the CDU system can actively intervene to adjust the conductivity value of the working fluid in the working fluid pipeline, and the response speed is relatively fast.

[0035] Specifically, for example, when the conductivity value of the working fluid in the working fluid pipeline detected by the conductivity detector 3 is greater than the preset value, the control module sends an instruction to the first valve component, the first valve component opens and adjusts to an appropriate opening, and the working fluid in the working fluid pipeline flows into the first pipeline and then enters the ion exchanger 29. The ion exchanger 29 adsorbs the anions and cations in the working fluid, thereby making the conductivity of the working fluid in the working fluid pipeline reach the preset value.

[0036] Alternatively, when the first valve is in an open state, the conductivity value of the working fluid in the working fluid pipeline detected by the conductivity detector 3 is less than a preset value, and the control module sends an instruction to the first valve, and the first valve is adjusted to an appropriate opening, thereby reducing the amount of working fluid in the working fluid pipeline flowing into the first pipeline, thereby making the conductivity of the working fluid in the working fluid pipeline reach the preset value.

[0037] In this embodiment, the CDU system uses deionized water (pure water) - ethylene glycol / propylene glycol solution and other alcohol fluid solutions instead of oil cooling fluids, which are applied to heat dissipation of electrical equipment such as high-voltage transformers.

[0038] The preset value of the conductivity of the working fluid in the working fluid pipeline may be a specific value or a range of values.

[0039] In this embodiment, when the conductivity value of the working fluid in the working fluid pipeline is less than 2μs / cm, the opening of the first valve body 28 is adjusted to 30%; when the conductivity value of the working fluid in the working fluid pipeline is 2μs / cm≤<3μs / cm, the opening of the first valve body 28 is adjusted to 50%; when the conductivity value of the working fluid in the working fluid pipeline is 3μs / cm≤<5μs / cm, the opening of the first valve body 28 is adjusted to 70%; when the conductivity value of the working fluid in the working fluid pipeline is 5μs / cm≤<10μs / cm, the opening of the first valve body 28 is adjusted to 100%.

[0040] Furthermore, the ion exchanger 29 includes an ion exchange resin module.

[0041] The ion exchange resin module is a water treatment process that replaces various anions and cations in water through anion and cation exchange resins. It is used to remove various anions and cations in water to adjust the conductivity of the working fluid solution in the CDU system.

[0042] Furthermore, the first pipeline is provided with a first temperature detector, which is used to detect the temperature value of the working medium flowing into the ion exchanger 29 .

[0043] The first temperature detector is fixedly arranged on the first pipeline, and the first temperature detector is located at the front side of the inlet of the ion exchanger 29, so that the first temperature detector detects the temperature value of the working fluid flowing into the ion exchanger 29 and sends the temperature value of the working fluid flowing into the ion exchanger 29 to the control module.

[0044] The ion exchange resin module has certain requirements for the working fluid temperature during use. Excessively high working fluid temperatures can cause the ion exchange resin module to melt or ion precipitation, resulting in the ion exchange resin module malfunctioning. Therefore, a first temperature detector detects the temperature of the working fluid flowing into the ion exchanger 29. When the temperature of the working fluid flowing into the ion exchanger 29 exceeds a preset value, the control module controls the first valve body 28 to close, preventing the overheated working fluid from flowing into the ion exchange resin module, thereby protecting the ion exchange resin module and preventing damage.

[0045] Furthermore, the first pipeline is also provided with a heat dissipation module; when the temperature value of the working fluid flowing into the ion exchanger 29 is greater than a preset value, the heat dissipation module can reduce the temperature value of the working fluid flowing into the ion exchanger 29 so that the temperature value of the working fluid flowing into the ion exchanger 29 meets the preset value; when the temperature value of the working fluid flowing into the ion exchanger 29 meets the preset value, the ion exchanger 29 can reach the maximum adsorption capacity.

[0046] When the temperature of the working fluid flowing into ion exchanger 29 exceeds a preset value, the control module can activate the heat dissipation module, which lowers the temperature of the working fluid flowing into ion exchanger 29 until it meets the preset value, thereby ensuring the normal operation of the ion exchange resin module. When the temperature of the working fluid flowing into ion exchanger 29 meets the preset value, ion exchanger 29 can achieve its maximum adsorption capacity.

[0047] Among them, the heat dissipation module may include a fan, which is arranged on one side of the first pipeline. When the temperature value of the working fluid flowing into the ion exchanger 29 exceeds a preset value, the control module controls the fan to start to blow cold air into the first pipeline, thereby reducing the temperature value of the working fluid flowing into the ion exchanger 29 in the first pipeline.

[0048] The heat dissipation module may also be a liquid-cooled heat dissipation device. The coolant in the liquid-cooled heat dissipation device exchanges heat with the first pipeline to reduce the temperature of the working fluid flowing into the ion exchanger 29 in the first pipeline. When the temperature of the working fluid flowing into the ion exchanger 29 exceeds a preset value, the liquid-cooled heat dissipation device is activated. The structure of the liquid-cooled heat dissipation device is consistent with that in the prior art and will not be further described here.

[0049] Furthermore, the CDU system also includes a dry cooler 24, a return pipe and a supply pipe; the dry cooler 24 includes a heat exchange coil, the return pipe is connected to the inlet of the heat exchange coil, and the supply pipe is connected to the outlet of the heat exchange coil; the return pipe, the heat exchange coil and the supply pipe are an integrally formed structure, and the return pipe, the heat exchange coil and the supply pipe constitute a working fluid pipeline.

[0050] The ends of the liquid return pipe and the liquid supply pipe are provided with connecting ports, which are connected to the heating unit in a chuck-clamp quick connection manner.

[0051] Specifically, the heat of the heating unit is transferred to the low-temperature fluid working medium (refrigerant) in the pipeline through the liquid-cooled cold plate. The low-temperature fluid working medium (refrigerant) is heated and turned into a high-temperature fluid working medium (refrigerant) after flowing through the liquid-cooled cold plate that carries the heat of the heat dissipation unit. The high-temperature fluid working medium (refrigerant) enters the CDU system through the chuck connection port at the end of the return pipe. After heat exchange with the outdoor air in the dry cooler 24, the high-temperature fluid working medium (refrigerant) is cooled into a low-temperature fluid working medium (refrigerant). The low-temperature fluid working medium (refrigerant) continues to provide low-temperature fluid working medium (refrigerant) to the liquid-cooled cold plate through the power provided by the first pump body 15 or the second pump body 16, and enters the liquid-cooled cold plate through the chuck connection port at the end of the liquid supply pipe. This cycle forms a closed system.

[0052] In this embodiment, the dry cooler 24 is composed of two heat exchangers arranged in a V-shape and connected to each other.

[0053] The return pipe, heat exchange coil, and supply pipe are integrally formed, forming a single unit. This integrates the traditional CDU with the outdoor dry cooler 24, creating a single, finished unit. This eliminates the need for numerous connecting pipes between the traditional CDU and the outdoor dry cooler 24, reducing system costs, minimizes the risk of leakage, and conserves equipment space. Furthermore, casters can be installed underneath the integrated unit to enhance mobility.

[0054] Furthermore, the CDU system further includes a third pipeline; one end of the third pipeline is connected to the liquid return pipe, the other end of the third pipeline is connected to the liquid supply pipe, and the third pipeline is provided with a second valve.

[0055] When the load in the CDU system drops to a certain level and the air cooler 25 is already operating at the lower speed limit, the control module can adjust the opening of the second valve body 31, allowing part of the working fluid in the return pipe to be cooled by the dry cooler 24. The remaining part of the working fluid in the return pipe flows directly to the supply pipe through the third pipe. The working fluid cooled by the dry cooler 24 and the working fluid flowing directly to the supply pipe through the third pipe are mixed and then supplied to the water-cooled cold plate through the supply pipe. This can meet the supply temperature requirements of the water-cooled cold plate, prevent low supply temperature, and prevent condensation in the system.

[0056] Among them, a liquid supply temperature detector 39 can be set in the liquid supply pipe. The liquid supply temperature detector 39 is used to detect the temperature value of the working fluid in the liquid supply pipe and send it to the control module. When the temperature value of the working fluid in the liquid supply pipe does not meet the preset value, the control module controls the second valve component to adjust the opening so that the temperature value of the working fluid in the liquid supply pipe meets the preset value.

[0057] Furthermore, a cold air blower 25 is provided on one side of the dry cooler 24; the return liquid pipe is provided with a return liquid temperature detector, which is used to detect the temperature value of the working medium in the return liquid pipe; the cold air blower 25 can adjust the speed of the cold air blower 25 according to the temperature value of the working medium in the return liquid pipe.

[0058] The air cooler 25 can increase the speed and flow of ambient air flowing through the dry cooler 24, promoting the intensity of heat exchange between the ambient temperature and the dry cooler 24, thereby enhancing the heat exchange effect. In this embodiment, the air cooler 25 can be a variable frequency air cooler 25. The return liquid temperature detector detects the temperature of the working fluid in the return liquid pipe and transmits it to the control module. The control module adjusts the speed of the air cooler 25 based on the temperature of the working fluid in the return liquid pipe to match the speed of the air cooler 25 with the temperature of the working fluid in the return liquid pipe, thereby achieving a better heat dissipation effect. This can fully utilize natural cooling sources and achieve energy saving effects.

[0059] Furthermore, the CDU system further includes a first pump body 15 and a second pump body 16 ; the first pump body 15 and the second pump body 16 are respectively connected to the liquid return pipe.

[0060] Specifically, a return liquid connection port 41 is provided at the end of the return liquid pipe, and a return liquid pressure sensor 1, a return liquid temperature detector, a conductivity detector 3, a pH detector 4 and a first liquid discharge valve 5 are sequentially provided on the return liquid pipe along the flow direction of the working medium in the return liquid pipe; a liquid replenishing tank 6, a liquid replenishing pump 7, a first one-way valve 8, a first filter 9 and a first butterfly valve 10 are sequentially connected to form an automatic liquid replenishing system, the outlet of the first butterfly valve 10 is connected to the return liquid pipe, and the automatic liquid replenishing system is located downstream of the first liquid discharge valve 5; an expansion tank 11 and a pump body inlet pressure sensor 12 are sequentially provided on the return liquid pipe downstream of the automatic liquid replenishing system; a second butterfly valve 13, a first pump body 15, a second one-way valve 17 and a first butterfly valve 10 are sequentially connected to form an automatic liquid replenishing system. The four butterfly valves 19 are connected in sequence to form the flow path of the first pump body 15; the third butterfly valve 14, the second pump body 16, the third check valve 18 and the fifth butterfly valve 20 are connected in sequence to form the flow path of the second pump body 16. The flow path of the first pump body 15 and the flow path of the second pump body 16 are connected in parallel, and the flow path of the first pump body 15 and the flow path of the second pump body 16 are respectively connected to the return pipe. The flow path of the first pump body 15 and the flow path of the second pump body 16 are both located downstream of the pump body inlet pressure sensor 12; the pump body outlet pressure sensor 21 and the safety valve 22 are sequentially arranged on the return pipe downstream of the flow path of the first pump body 15 and the flow path of the second pump body 16; the working medium flows through the safety valve 22 and enters the heat exchange coil of the dry cooler 24.

[0061] The dry cooler 24 consists of two heat exchangers arranged in a V-shape, interconnected. The first and second automatic exhaust valves 23 and 26 are mounted on top of the two V-shaped heat exchangers. The dry cooler 24 is equipped with a temperature and humidity sensor 42. This sensor is magnetically positioned within the system and outputs ambient temperature and humidity information to the control module.

[0062] The function of the expansion tank 11 is to balance the constantly changing pressure of the closed system. When the pressure of the solution in the system decreases, the gas pressure in the expansion tank 11 exceeds the pressure of the solution. At this time, the gas expands and squeezes the water in the airbag out to replenish the system until the pressure is balanced. When the solution in the system expands due to heat and the pressure increases, exceeding the gas pressure in the expansion tank 11, the gas is compressed, and the solution in the system will flow into the airbag of the expansion tank 11 until the pressure is balanced. Another function is that the expansion tank 11 is generally placed on the inlet side of the water pump to prevent the water pump from cavitation due to low system pressure.

[0063] The first and second pump bodies 15, 16 provide circulation power for the system's working fluid flow, overcoming system resistance. Both the first and second pump bodies 15, 16 are horizontal, centrifugal, variable-frequency pumps. They provide redundant backups and regularly alternate operation to extend the pump's service life while supporting online replacement and maintenance. They support variable-frequency regulation, allowing them to adjust the pump's operating frequency under variable load conditions based on system pressure differentials, temperature differentials, flow rates, and other parameters, meeting diverse control requirements.

[0064] The function of the safety valve 22 is: when the pressure of the working fluid in the system exceeds the pressure relief value of the safety valve 22, the working fluid is released out of the system to prevent the system pressure from exceeding the system safe operating pressure value, thereby protecting the components in the system.

[0065] Furthermore, the liquid supply pipe is provided with a filter 34 .

[0066] Specifically, the following components are sequentially arranged along the flow direction of the working medium in the liquid supply pipe: a second drain valve 27. Subsequently, one end of the first pipeline is connected to the liquid supply pipe, and the other end of the first pipeline is connected to the third pipeline. In the first pipeline, along the flow direction of the working medium, a first valve body 28, an ion exchanger 29, and a sixth butterfly valve 30 are sequentially arranged. Subsequently, the first pipeline is sequentially arranged with a seventh butterfly valve 32, a pressure sensor 33 at the inlet of a filter 34, a filter 34, an eighth butterfly valve 35, a flowmeter 37, a liquid supply pressure sensor 38, and a liquid supply temperature detector 39. A liquid supply connection port 40 is provided at the end of the liquid supply pipe. A ninth butterfly valve 36 is connected in parallel to the liquid supply pipe via a pipeline. The inlet of the ninth butterfly valve 36 is connected to the liquid supply pipe upstream of the seventh butterfly valve 32 via a pipeline, and the outlet of the ninth butterfly valve 36 is connected to the liquid supply pipe downstream of the eighth butterfly valve 35 via a pipeline. The function of the filter 34 is to filter out impurities in the CUD system and ensure the cleanliness of the system's circulating water. Pressure sensors are connected before and after filter 34 to monitor the inlet and outlet pressures. The difference between the pressure and the set value is used to determine whether filter 34 is clogged. If filter 34 is clogged, manually open the ninth butterfly valve 36 and close the seventh and eighth butterfly valves 32 and 35. After replacing filter 34 online without stopping the machine, manually open the seventh and eighth butterfly valves 32 and 35 and close the ninth butterfly valve 36. This allows for online maintenance of filter 34. Flowmeter 37 monitors the CUD system flow rate, providing a visual check of system stability and providing flow control for the system control system.

[0067] The refill tank features a filling port on the top, a level indicator on the side, and a level sensor on the bottom. During normal operation of the CDU system, the first drain valve 5, the second drain valve 27, and the ninth butterfly valve 36 are all closed. The opening control of the second valve 31 and the speeds of the first and second pumps 15 and 16 share the same PID demand control, with staged adjustments based on PID demand.

[0068] The control module can be divided into automatic control and manual control. In automatic control, all data detected by data detection devices such as temperature detectors, pressure sensors, temperature and humidity sensors 42, pH detectors 4, and conductivity detectors 3 in the CUD system are uploaded to the control module. According to the set system software control logic and parameters, alarm and warning functions can be implemented for data that exceeds the set range. At the same time, it can automatically control the operating status of the variable frequency pump body and variable frequency fan; automatically adjust the opening ratio of the first valve body 28 and the second valve body 31, adjust the CUD system flow rate, and adjust the conductivity value in the CUD system. In manual control, the operating status of each device can be adjusted by manually sending instructions to the above-mentioned devices through the control module.

[0069] Example 2

[0070] The heat dissipation system provided in this embodiment includes the CDU system provided in Example 1. The conductivity detector 3 is fixedly arranged on the working fluid pipeline. The conductivity value of the working fluid in the working fluid pipeline can be detected by the conductivity detector 3. The conductivity value can be uploaded to the control module (e.g., a host computer). When the conductivity value of the working fluid in the working fluid pipeline does not meet the preset value (the conductivity value of the working fluid in the working fluid pipeline is greater than or less than the preset value), the control module controls and adjusts the opening of the first valve member to adjust the conductivity value of the working fluid in the working fluid pipeline to the preset value, thereby ensuring the safe and reliable operation of the CDU system. Moreover, when the conductivity value of the working fluid in the working fluid pipeline does not meet the preset value, the CDU system can actively intervene to adjust the conductivity value of the working fluid in the working fluid pipeline, and the response speed is relatively fast.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A CDU system, characterized in that: It includes working fluid pipeline, conductivity detector and ion exchanger; The conductivity detector is arranged on the working fluid pipeline, and the conductivity detector is used to detect the conductivity value of the working fluid in the working fluid pipeline; The ion exchanger is connected in parallel with the working medium pipeline through a first pipeline, and the first pipeline is provided with a first valve member; When the conductivity value of the working medium in the working medium pipeline does not meet the preset value, the opening of the first valve member can be adjusted to adjust the conductivity value of the working medium in the working medium pipeline to the preset value.

2. The CDU system according to claim 1, characterized in that: The ion exchanger includes an ion exchange resin module.

3. The CDU system according to claim 2, characterized in that: The first pipeline is provided with a first temperature detector, and the first temperature detector is used to detect the temperature value of the working medium flowing into the ion exchanger.

4. The CDU system according to claim 3, characterized in that: The first pipeline is also provided with a heat dissipation module; When the temperature of the working fluid flowing into the ion exchanger is greater than a preset value, the heat dissipation module can reduce the temperature of the working fluid flowing into the ion exchanger so that the temperature of the working fluid flowing into the ion exchanger meets the preset value; When the temperature value of the working fluid flowing into the ion exchanger meets the preset value, the ion exchanger can reach the maximum adsorption capacity.

5. The CDU system according to claim 1, characterized in that: The CDU system also includes a dry cooler, a liquid return pipe and a liquid supply pipe; The dry cooler includes a heat exchange coil, a liquid return pipe is connected to the inlet of the heat exchange coil, and the liquid supply pipe is connected to the outlet of the heat exchange coil; the liquid return pipe, the heat exchange coil and the liquid supply pipe are an integrally formed structure, and the liquid return pipe, the heat exchange coil and the liquid supply pipe constitute the working fluid pipeline.

6. The CDU system according to claim 5, characterized in that: The CDU system further includes a third pipeline; one end of the third pipeline is connected to the liquid return pipe, the other end of the third pipeline is connected to the liquid supply pipe, and the third pipeline is provided with a second valve.

7. The CDU system according to claim 5, characterized in that: A cooling fan is provided on one side of the dry cooler; The liquid return pipe is provided with a liquid return temperature detector, which is used to detect the temperature value of the working medium in the liquid return pipe; the air cooler can adjust the speed of the air cooler according to the temperature value of the working medium in the liquid return pipe.

8. The CDU system according to claim 5, characterized in that: The CDU system further includes a first pump body and a second pump body; the first pump body and the second pump body are respectively connected to the liquid return pipe.

9. The CDU system according to claim 5, characterized in that: The liquid supply pipe is provided with a filter.

10. A heat dissipation system, characterized in that: A CDU system comprising any one of claims 1-9.

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