CDU system

Abstract

A CDU system, which relates to the technical field of temperature control devices. The CDU system comprises a CDU main body and a control apparatus, wherein the CDU main body comprises a main channel, and an ion filtering branch, which is connected in parallel to at least part of the pipeline of the main channel; a conductivity measurement device is provided on the main channel, and an ion exchanger and a first flow regulating valve are provided on the ion filtering branch; both the conductivity measurement device and the first flow regulating valve are in communication connection with the control apparatus; and the control apparatus is used for receiving measurement data of the conductivity measurement device and controlling the opening degree of the first flow regulating valve. On the basis of cooperation between the conductivity measurement device, the first flow regulating valve and the control apparatus, the control apparatus may adaptively regulate the opening degree of the first flow regulating valve on the basis of a conductivity measured by the conductivity measurement device, and correspondingly regulate the flow of liquid passing through the ion exchanger, so as to adjust the adjustment efficiency of the conductivity, thereby more efficiently reducing the conductivity of a working-medium solution in the system.

Description

A CDU system

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 22, 2023, with application number 202311572631.6 and invention name “A CDU 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 temperature control equipment, and in particular to a CDU system. Background Art

[0003] Conventional liquid-cooled CDU (Coolant Distribution Unit) systems only have a conductivity meter to measure the conductivity of the working fluid solution within the system. However, in CDU systems, when staff discover that the test data does not meet requirements, they manually adjust the solution properties, which affects the efficiency of solution property adjustment.

[0004] Therefore, how to improve the efficiency of regulating conductivity is a technical problem that those skilled in the art currently need to solve. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide a CDU system that can improve the efficiency of regulating conductivity.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A CDU system includes a CDU body and a control device. The CDU body includes a main channel and an ion filtration branch connected in parallel to at least a portion of the main channel. The main channel is provided with a conductivity detector, and the ion filtration branch is provided with an ion exchanger and a first flow regulating valve.

[0008] The conductivity detector and the first flow regulating valve are both communicatively connected to the control device; the control device is used to receive detection data from the conductivity detector and to control the opening of the first flow regulating valve.

[0009] Preferably, a first control valve is further provided on the ion filtering branch to control the on-off of the ion filtering branch.

[0010] Preferably, a heat exchange device is also included, and the main channel includes a return liquid channel connected to the inlet of the heat exchange device and a supply liquid channel connected to the outlet of the heat exchange device; the inlet of the ion filtration branch is connected to the supply liquid channel, and the outlet is connected to the return liquid channel.

[0011] Preferably, the conductivity detector is provided on the liquid return channel and is located between the inlet of the liquid return channel and the outlet of the ion filtration branch.

[0012] Preferably, a heat exchange device is further included, and the main channel includes a liquid return channel connected to the inlet of the heat exchange device and a liquid supply channel connected to the outlet of the heat exchange device;

[0013] The CDU body further includes a temperature regulating branch, the inlet of which is connected to the liquid supply channel, and the outlet of which is connected to the liquid return channel; a second flow regulating valve is provided on the temperature regulating branch to regulate the flow of the temperature regulating branch.

[0014] Preferably, a return liquid temperature sensor is provided on the return liquid channel, and the return liquid temperature sensor and the second flow regulating valve are communicatively connected to the control device; the control device is used to receive detection data of the return liquid temperature sensor and to control the opening of the second flow regulating valve.

[0015] Preferably, a circulating water pump is provided on the liquid return channel, and the circulating water pump is communicatively connected to the control device, and the control device is used to control the frequency of the circulating water pump.

[0016] Preferably, a heat exchange device is further included, the heat exchange device including a dry cooler and an air cooler provided on the heat dissipation side of the dry cooler, the main channel including a liquid return channel connected to the inlet of the dry cooler and a liquid supply channel connected to the outlet of the dry cooler;

[0017] A liquid supply temperature sensor is provided on the liquid supply channel. The air cooler and the liquid supply temperature sensor are communicatively connected to the control device. The control device is used to receive detection data from the liquid supply temperature sensor and to adjust the frequency of the air cooler.

[0018] Preferably, the heat exchange device is integrally fixed to the CDU body.

[0019] Preferably, casters are provided below the integrated structure formed by the heat exchange device and the CDU body.

[0020] The CDU system provided by the present invention includes a CDU body and a control device. The CDU body includes a main channel and an ion filtration branch connected in parallel to at least part of the main channel. A conductivity detector is provided on the main channel, and an ion exchanger and a first flow control valve are provided on the ion filtration branch. The conductivity detector and the first flow control valve are both communicatively connected to the control device. The control device is used to receive detection data from the conductivity detector and to control the opening of the first flow control valve.

[0021] Based on the cooperation between the conductivity detector, the first flow regulating valve and the control device, the control device can receive the detection data of the conductivity detector and control the opening of the first flow regulating valve. After the ion filtration branch is connected to the main channel, the ion exchanger adjusts the anions and cations of the liquid entering the ion filtration branch from the main channel. The control device can adaptively adjust the opening of the first flow regulating valve according to the conductivity detected by the conductivity detector, and correspondingly adjust the liquid flow passing through the ion exchanger to adjust the efficiency of conductivity regulation, thereby more efficiently reducing the conductivity of the working fluid solution in the system, improving the degree of automation of the regulation, and solving the problem that the increase in conductivity of the working fluid solution during operation may cause the electrical components to be broken down and damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0023] FIG1 is a piping connection diagram of a specific embodiment 1 of a CDU system provided by the present invention;

[0024] FIG2 is an appearance diagram of a first specific embodiment of a CDU system provided by the present invention.

[0025] Reference numerals:

[0026] Return liquid pressure sensor 1, return liquid temperature sensor 2, conductivity detector 3, pH detector 4, first drain valve 5, liquid replenishment tank 6, liquid replenishment pump 7, first check valve 8, first filter 9, first butterfly valve 10, expansion tank 11, water pump inlet pressure sensor 12, second butterfly valve 13, third butterfly valve 14, first circulating water pump 15, second circulating water pump 16, second check valve 17, third check valve 18, fourth butterfly valve 19, fifth butterfly valve 20, water pump outlet pressure sensor 21, safety valve 22, first automatic exhaust valve 23, dry cooler 24, air cooler 25, second automatic exhaust valve 26, second drain valve 27, first flow regulating valve 28, ion exchanger 29, sixth butterfly valve 30, second flow regulating valve 31, seventh butterfly valve 32, filter inlet pressure sensor 33, second filter 34, eighth butterfly valve 35, ninth butterfly valve 36, flowmeter 37, liquid supply pressure sensor 38, liquid supply temperature sensor 39, system liquid supply chuck interface 40, system return liquid chuck interface 41, temperature and humidity sensor 42, heat exchanger automatic exhaust valve protective cover 43, pH value display 44, conductivity value display 45, casters 46, return liquid channel 47, liquid supply channel 48, ion filtration branch 49, temperature regulation branch 50. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] The core of the present invention is to provide a CDU system that can improve the efficiency of regulating conductivity.

[0029] Specific embodiment 1 of the CDU system provided by the present invention, please refer to Figures 1 and 2, includes a CDU body and a control device.

[0030] The CDU consists of a main channel and a heat exchanger. The main channel includes a return channel 47 connected to the heat exchanger's inlet and a supply channel 48 connected to the heat exchanger's outlet. The main channel allows the flow of working fluid, which then exchanges heat at the heat exchanger. The control device, specifically a host computer, can be installed directly on the CDU system or controlled remotely.

[0031] The heat exchange device includes an air cooler 25 and a dry cooler 24 , and the air cooler 25 is arranged on the heat dissipation side of the dry cooler 24 .

[0032] Air cooler 25 increases the speed and flow of ambient air through dry cooler 24, improving the heat exchange between the ambient temperature and dry cooler 24 and enhancing heat exchange. Air cooler 25 uses a variable frequency, adjustable speed fan, allowing it to adjust its speed based on the system's fluid supply temperature, fully utilizing the natural cooling source and achieving energy savings.

[0033] The outlet of the return liquid channel 47 is connected to the dry cooler 24, and the inlet of the supply liquid channel 48 is connected to the dry cooler 24. The dry cooler 24 cools the high-temperature fluid (refrigerant) returning from the liquid-cooled cold plate into the return liquid channel 47, and then provides low-temperature fluid (refrigerant) water to the liquid-cooled cold plate through the supply liquid channel 48. Furthermore, a temperature and humidity sensor 42 is provided on the dry cooler 24. This sensor is magnetically positioned within the CDU system and outputs ambient temperature and humidity information. The temperature and humidity sensor 42 is connected to the control device via a communication line.

[0034] As shown in Figure 1, the CDU body also includes an ion filter branch 49 connected in parallel to at least part of the main channel. The main channel is provided with a conductivity detector 3, and the ion filter branch 49 is provided with an ion exchanger 29 and a first flow control valve 28.

[0035] Among them, the CDU body can use deionized water (pure water)-ethylene glycol / propylene glycol solution and other alcohol fluid solutions as coolants instead of oil coolers, which can be applied to high-voltage substation equipment heat dissipation scenarios.

[0036] The ion exchanger 29 includes an ion exchange resin system, which can replace various anions and cations in water through anion and cation exchange resins, thereby removing various anions and cations in water and reducing the conductivity of the working fluid solution in the system.

[0037] The conductivity detector 3 and the first flow control valve 28 are both communicatively connected to a control device; the control device is used to receive detection data from the conductivity detector 3 and to control the opening of the first flow control valve 28. During use, when the conductivity detector 3 detects that the conductivity of the working fluid in the coolant channel is too high, it uploads the detected data to the control device, which then issues a command to the first flow control valve 28, causing it to open and adjust the flow rate. At this time, the working fluid in the main channel flows into the ion exchanger 29, which adsorbs ions in the working fluid to restore the conductivity in the main channel to a normal value.

[0038] Based on the cooperation between the conductivity detector 3, the first flow regulating valve 28 and the control device, the control device can be used to receive the detection data of the conductivity detector 3 and control the opening of the first flow regulating valve 28. After the ion filtration branch 49 is connected to the main channel, the ion exchanger 29 adjusts the anions and cations of the liquid entering the ion filtration branch 49 from the main channel. The control device can adaptively adjust the opening of the first flow regulating valve 28 according to the conductivity detected by the conductivity detector 3, and correspondingly adjust the liquid flow passing through the ion exchanger 29 to adjust the efficiency of the conductivity regulation, thereby more efficiently reducing the conductivity of the working fluid solution in the system, improving the degree of automation of the regulation, and solving the problem that the increase in conductivity of the working fluid solution during operation will cause the electrical components to be broken down and damaged.

[0039] In which, when performing conductivity control, the control device is used to adjust the first flow control valve 28 to a corresponding opening according to the preset conductivity range of the conductivity detected by the conductivity detector 3; wherein the preset conductivity range includes at least two continuous, non-overlapping numerical ranges, and each preset conductivity range corresponds to an opening of the first flow control valve 28.

[0040] Please refer to the following table, the control device can control the first flow regulating valve 28 accordingly:

[0041] Based on the above limitations, when the conductivity detector 3 detects that the conductivity of the working fluid solution is higher or lower than the corresponding limit value, the control device can automatically adjust the opening of the first flow control valve 28 and automatically adjust the conductivity of the working fluid solution accordingly to ensure safe and reliable operation of the system.

[0042] A first control valve, specifically the sixth butterfly valve 30, is also provided on the ion filtration branch 49 to control the opening and closing of the ion filtration branch 49. The addition of the first control valve allows control over whether the ion filtration branch 49 and the ion exchanger 29 are connected to the main channel, facilitating maintenance and replacement of the ion exchanger 29. Of course, in other embodiments, the opening and closing of the ion filtration branch 49 can be controlled directly via the first flow control valve 28. Furthermore, the first control valve can be a manual valve or an electric valve communicatively connected to a control device.

[0043] The inlet of ion filtration branch 49 is connected to liquid supply channel 48, and the outlet is connected to liquid return channel 47. In other words, the liquid entering ion filtration branch 49 is cooled by the heat exchange device. The cooled liquid flows back to liquid return channel 47 through ion filtration branch 49, thereby regulating both conductivity and temperature. Of course, in other embodiments, ion filtration branch 49 can also be connected in parallel to part of the liquid return channel 47 or part of the liquid supply channel 48.

[0044] The conductivity detector 3 is provided on the liquid return channel 47 and is located between the inlet of the liquid return channel 47 and the outlet of the ion filtration branch 49 , so as to judge the conductivity of the liquid entering the main channel more timely.

[0045] As shown in FIG1 , the CDU body further includes a temperature regulating branch 50 , the inlet of which is connected to the liquid supply channel 48 and the outlet of which is connected to the liquid return channel 47 . A second flow regulating valve 31 is provided on the temperature regulating branch 50 to regulate the flow of the temperature regulating branch 50 .

[0046] The return liquid temperature sensor 2 is provided on the return liquid channel 47 . The return liquid temperature sensor 2 and the second flow regulating valve 31 are communicatively connected to a control device. The control device is used to receive detection data from the return liquid temperature sensor 2 and to control the opening of the second flow regulating valve 31 .

[0047] The first flow regulating valve 28 and the second flow regulating valve 31 may be electric valves, such as electric two-way valves.

[0048] When the load in the system is reduced to a certain level and the air cooler 25 is already running at the lower speed limit, the control device can automatically adjust the opening of the second flow control valve 31 according to the temperature setting to meet the system liquid supply temperature requirement, thereby preventing a lower liquid supply temperature from causing condensation in the system.

[0049] Of course, in other embodiments, the second flow regulating valve 31 may also be a manual valve, and the flow of the temperature regulating branch 50 is manually adjusted as needed.

[0050] As shown in Figure 1, for the setting of the return liquid channel 47, a return liquid chuck interface is set at its inlet, and the return liquid channel 47 is connected in sequence to the return liquid pressure sensor 1, the return liquid temperature sensor 2, the conductivity detector 3, the pH detector 4, the first liquid discharge valve 5, the bypass pipe outlet, the liquid replenishment branch outlet, the expansion tank 11, the water pump inlet pressure sensor 12, the circulating pump branch, the water pump outlet pressure sensor 21, the safety valve 22, and then connected to the inlet of the dry cooler 24.

[0051] The bypass pipe is a channel formed by the temperature regulating branch 50 and the ion filtering branch 49 in parallel, and the outlet of the bypass pipe is the outlet of the temperature regulating branch 50 and the ion filtering branch 49.

[0052] Among them, the rehydration branch includes an automatic rehydration system consisting of a rehydration tank 6, a rehydration pump 7, a first one-way valve 8, a first filter 9, and a first butterfly valve 10. In addition, the rehydration tank 6 is provided with a liquid filling port on the top, a liquid level display on the side, and a liquid level sensor on the bottom, wherein the water outlet at the bottom of the rehydration tank 6 is connected to the rehydration pump 7. In the control device, the rehydration branch can be automatically rehydrated according to the settings. For example, the logic of automatic rehydration is: if the water pump inlet pressure is less than the water replenishment pressure setting value (default value 0.3 bar (settable), the rehydration pump 7 is turned on; if the water pump inlet pressure is greater than or equal to the water replenishment pressure setting value (default value 0.3 bar (settable) + the hysteresis is default value 0.4 bar (settable), the rehydration pump 7 is turned off.

[0053] Among them, the function of the expansion tank 11 is: as the pressure of the balanced closed system changes, when the pressure of the solution in the system decreases, the gas pressure in the expansion tank 11 is greater than the pressure of the solution. At this time, the gas expands and squeezes the water in the airbag to replenish the system until the pressure is balanced. When the solution in the system expands due to heat and the pressure increases, it exceeds the gas pressure in the expansion tank 11. At this time, 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 circulating water pump to prevent the circulating water pump from cavitation due to low system pressure.

[0054] Among them, the circulating pump branch includes a first pump body channel and a second pump body channel in parallel. On the first pump body channel, the inlet of the first circulating water pump 15 is connected to the second butterfly valve 13, and the outlet of the first circulating water pump 15 is connected to the second one-way valve 17 and the fourth butterfly valve 19 respectively; on the second pump body channel, the inlet of the second circulating water pump 16 is connected to the third butterfly valve 14, and the outlet of the first circulating water pump 15 is connected to the third one-way valve 18 and the fifth butterfly valve 20 respectively.

[0055] The first and second circulating water pumps 15, 16 provide circulation power for the system's working fluid flow, overcoming system resistance. Both are horizontal, centrifugal, variable-frequency pumps. They provide redundant backups and regularly alternate operation to extend pump life and support online replacement and maintenance. They support variable-frequency regulation, adjusting 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.

[0056] The function of the safety valve 22 is to release the working fluid to the outside of the system when the pressure of the working fluid in the system exceeds the pressure relief value of the safety valve 22 to prevent the system pressure from exceeding the safe operating pressure value of the system, thereby protecting the components in the system.

[0057] As shown in Figure 1, the liquid supply channel 48 is set up with its inlet connected to the outlet of the dry cooler 24. The liquid supply channel 48 is connected to the second liquid discharge valve 27, the bypass pipe inlet, the filter branch, the flow meter 37, the liquid supply pressure sensor 38, and the liquid supply temperature sensor 39 in sequence. The outlet of the liquid supply channel 48 is connected to the system liquid supply chuck interface 40.

[0058] The first liquid discharge valve 5 and the second liquid discharge valve 27 are arranged at the lowest pipeline inside the system.

[0059] On the filter branch, the seventh butterfly valve 32 is connected to the filter inlet pressure sensor 33, the second filter 34, and the eighth butterfly valve 35. The ninth butterfly valve 36 is connected to the inlet of the seventh butterfly valve 32 and the outlet of the eighth butterfly valve 35. The second filter 34 can filter out impurities in the system to ensure the cleanliness of the circulating water.

[0060] Among them, since the second filter 34 is connected to the front and back of the pressure sensor (filter inlet pressure sensor 33, liquid supply pressure sensor 38), it is used to detect the inlet and outlet pressures of the filter. By calculating the difference and the set value, it is determined whether the filter is dirty and blocked. If the filter is dirty and blocked, the ninth butterfly valve 36 can be manually opened, and the seventh butterfly valve 32 and the eighth butterfly valve 35 can be closed. After the filter is replaced online without stopping the machine, the seventh butterfly valve 32 and the eighth butterfly valve 35 can be manually opened, and the ninth butterfly valve 36 can be closed, thereby realizing online maintenance of the filter.

[0061] Among them, based on the liquid supply temperature sensor 39 set on the liquid supply channel 48, the air cooler 25 and the liquid supply temperature sensor 39 are communicatively connected to the control device, and the control device is used to receive the detection data of the liquid supply temperature sensor 39, and to adjust the frequency of the air cooler 25 to adjust the frequency of the air cooler 25 according to the liquid supply temperature.

[0062] Among them, the flow meter 37 can monitor the system flow, visually detect the stability of the system operation, and provide a flow control method for the system control method.

[0063] It should be noted that, in the present invention, any two interconnected components are connected via a hollow connecting pipe.

[0064] In the CDU system of this embodiment, during normal operation, the first drain valve 5, the second drain valve 27, and the ninth butterfly valve 36 are all in the closed state. The system liquid supply chuck interface 40 and the system liquid return chuck interface 41 are the connection ports between the CDU system and the liquid-cooled cold plate pipeline that absorbs heat from the heating unit, and adopt a chuck-clamp quick connection. 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 system return liquid chuck interface 41. 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 circulating water pump 15 or the second circulating water pump 16, and this cycle forms a closed system.

[0065] In addition, the control device can be divided into automatic control and manual control. Automatic control: All data detected by data detection devices such as temperature sensors, pressure sensors, temperature and humidity sensors 42, pH detectors 4, and conductivity detectors 3 are uploaded to the control device. According to the set system software control logic and parameters, alarm and warning functions can be implemented for data outside the set range. At the same time, it can automatically control the operating status of variable frequency water pumps and variable frequency fans; automatically adjust the opening ratio of electric two-way valves, adjust system flow, and control the conductivity value in the system. Manual control: Manually control the operating status of each device by manually issuing instructions to the control device.

[0066] Among them, the automatic control logic:

[0067] Air cooler 25: its speed is automatically adjusted according to the supply liquid temperature detected by the supply liquid temperature sensor 39;

[0068] Circulating water pumps (first circulating water pump 15, second circulating water pump 16): Pump speed control is based on the supply and return fluid pressure differential, flow control, and supply and return fluid temperature differential control. Three modes can be selected based on control needs. If the collected values ​​involved in the control fail, the control mode automatically switches to the mode with normal collected values. A running time is also set to enable automatic pump operation. Specifically, the circulating water pumps are communicatively connected to a control device, which is used to control the frequency of the circulating water pumps.

[0069] First flow regulating valve 28: opening degree control, controlled according to the value detected by conductivity detector 3;

[0070] Second flow regulating valve 31: The opening control and the circulating water pump speed share the same PID demand control, so as to perform segmented adjustment according to PID demand;

[0071] Automatic rehydration logic: When the water pump inlet pressure is less than the water replenishment pressure setting value (default value 0.3 bar (settable), the rehydration pump 7 is turned on; when the water pump inlet pressure is greater than or equal to the water replenishment pressure setting value (default value 0.3 bar (settable)) + the hysteresis (default value 0.4 bar (settable), the rehydration pump 7 is turned off.

[0072] As shown in FIG2 , the heat exchanger is integrally fixed to the CDU body. At the same time, casters 46 are provided below the integral structure formed by the heat exchanger and the CDU body.

[0073] Among them, in the heat exchange device, the dry cooler 24 is two heat exchangers arranged in a "V" shape and connected to each other, and the first automatic exhaust valve 23 and the second automatic exhaust valve 26 in the dry cooler 24 are respectively installed on the top of the two "V"-shaped heat exchangers.

[0074] Based on the assembly method of the heat exchange device and the CDU body, the CDU system in this embodiment can be regarded as an integrated intelligent system that integrates a dry cooler and an air-liquid-liquid cooling cabinet CDU system. All pipes and equipment components are integrated into the CDU system in this embodiment to form a finished device, which can reduce a large number of intermediate connecting pipes, reduce system costs, reduce the risk of system leakage, and also greatly save the space occupied by the equipment. At the same time, the CDU system in this embodiment adds a caster 46 design on the basis of conventional installation and fixing requirements, which can improve the convenience of the system equipment and can be moved according to usage requirements, solving the problem that conventional liquid cooling cabinet CDU systems are difficult to move again once they are installed. It is very friendly to small space usage scenarios such as laboratories and can meet the new requirements for liquid cooling systems in application scenarios such as laboratories, energy storage, and high-voltage transformers, such as convenience, reliability, and small space occupation.

[0075] The CDU system in this embodiment has the following advantages: it can automatically adjust the working fluid solution properties and other requirements, can be applied to the field of high-voltage transformer (10KV) heat dissipation technology, saves space, is easy to move, and ensures that the CDU system has the advantages of high efficiency, stable performance, safety and reliability, and easy maintenance.

[0076] It should be noted that when an element is referred to as being "fixed" to another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected" to another element, it may be directly connected to the other element or there may be an intermediate element. In addition, in the description of the present invention, unless otherwise specified, "plurality," "plurality," and "plurality of groups" mean two or more.

[0077] Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate and simplify the description of the present invention and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features referred to.

[0078] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0079] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0080] The CDU system provided by the present invention has been described in detail above. This document uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is intended only to facilitate understanding of the method and core concepts of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the claims of the present invention.

Claims

1. A CDU system, characterized in that: The invention comprises a CDU body and a control device, wherein the CDU body comprises a main channel and an ion filtering branch (49) connected in parallel to at least part of the pipeline of the main channel; an electrical conductivity detector (3) is arranged on the main channel, and an ion exchanger (29) and a first flow regulating valve (28) are arranged on the ion filtering branch (49); The conductivity detector (3) and the first flow regulating valve (28) are both communicatively connected to the control device; the control device is used to receive detection data from the conductivity detector (3) and to control the opening of the first flow regulating valve (28).

2. The CDU system according to claim 1, characterized in that: A first control valve is also provided on the ion filtering branch (49) to control the on and off of the ion filtering branch (49).

3. The CDU system according to claim 1, characterized in that: It also includes a heat exchange device, wherein the main channel includes a liquid return channel (47) connected to the inlet of the heat exchange device and a liquid supply channel (48) connected to the outlet of the heat exchange device; the inlet of the ion filtering branch (49) is connected to the liquid supply channel (48), and the outlet is connected to the liquid return channel (47).

4. The CDU system according to claim 3, characterized in that: The conductivity detector (3) is arranged on the liquid return channel (47) and is located between the inlet of the liquid return channel (47) and the outlet of the ion filtering branch (49).

5. The CDU system according to claim 1, characterized in that: It also includes a heat exchange device, wherein the main channel includes a liquid return channel (47) connected to the inlet of the heat exchange device and a liquid supply channel (48) connected to the outlet of the heat exchange device; The CDU body further comprises a temperature regulating branch (50), the inlet of the temperature regulating branch (50) being connected to the liquid supply channel (48), and the outlet of the temperature regulating branch (50) being connected to the liquid return channel (47); a second flow regulating valve (31) is arranged on the temperature regulating branch (50) to regulate the flow of the temperature regulating branch (50).

6. The CDU system according to claim 5, characterized in that: A liquid return temperature sensor (2) is provided on the liquid return channel (47); the liquid return temperature sensor (2) and the second flow regulating valve (31) are communicatively connected to the control device; the control device is used to receive detection data of the liquid return temperature sensor (2) and to control the opening degree of the second flow regulating valve (31).

7. The CDU system according to claim 5, characterized in that: A circulating water pump is arranged on the liquid return channel (47), and the circulating water pump is communicatively connected to the control device, and the control device is used to control the frequency of the circulating water pump.

8. The CDU system according to claim 1, characterized in that: The invention also comprises a heat exchange device, the heat exchange device comprising a dry cooler (24) and a cooling fan (25) arranged on the heat dissipation side of the dry cooler (24), the main channel comprising a liquid return channel (47) connected to the inlet of the dry cooler (24) and a liquid supply channel (48) connected to the outlet of the dry cooler (24); A liquid supply temperature sensor (39) is provided on the liquid supply channel (48); the air cooler (25) and the liquid supply temperature sensor (39) are communicatively connected to the control device; the control device is used to receive detection data of the liquid supply temperature sensor (39) and to adjust the frequency of the air cooler (25).

9. The CDU system according to claim 8, characterized in that: The heat exchange device is integrally fixed to the CDU body.

10. The CDU system according to claim 9, characterized in that: Casters (46) are arranged below the integrated structure formed by the heat exchange device and the CDU body.

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