Integrated single-phase immersion liquid cooling CDU
By designing an integrated single-phase immersion liquid-cooled CDU, which integrates a high-flow small electronic pump and a check valve, eliminates secondary side piping, and supports online replacement of the circulation pump, the complex structure and leakage risk of split CDUs are solved, thereby improving equipment reliability and operation and maintenance efficiency.
Patent Information
- Application Number
- CN202423116797.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing split-type CDUs are large in size, complex in structure, have many pipeline connections, pose a risk of leakage, and the circulating pumps do not support online replacement, which affects equipment reliability and operation and maintenance efficiency.
An integrated single-phase immersion liquid-cooled CDU was designed, employing a high-flow small electric pump, integrating a heat exchanger, check valve, and sealing rings, eliminating secondary side piping, supporting online replacement of the circulation pump, and equipped with a pressure gauge and vent valve to monitor and vent air.
It achieves an efficient spatial layout, reduces leakage risk, improves reliability and operation and maintenance efficiency, simplifies the CDU structure, reduces leakage points, and supports convenient replacement of circulating pumps.
Smart Images

Figure CN223540855U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of liquid-cooled CDU technology, and in particular to an integrated single-phase immersion liquid-cooled CDU. Background Technology
[0002] With the rapid development of information technology, data centers, as the core of information processing, have increasingly become a focus of industry attention regarding their performance and stability. High-performance computing equipment generates a large amount of heat during operation; if this heat cannot be effectively dissipated, it will severely impact the equipment's performance and lifespan. Therefore, efficient cooling technology has become an indispensable part of data centers. Among numerous cooling technologies, liquid-cooled CDUs (Cooling Distribution Units) stand out for their superior heat dissipation performance and energy-saving and environmentally friendly characteristics.
[0003] Currently, the split-type CDU used in the market is large in size, complex in structure, has many pipeline connections, and has a large number of possible leakage points. The circulating pump does not support online replacement. Utility Model Content
[0004] To address the shortcomings of existing technologies, the present invention solves the following technical problem: the currently available split-type CDUs are large in size, complex in structure, have many pipeline connections, and have a large number of possible leakage points. The circulating pump does not support online replacement. The present invention provides an integrated single-phase immersion liquid-cooled CDU.
[0005] To achieve the above objectives, this utility model provides:
[0006] An integrated single-phase immersion liquid-cooled CDU includes a housing for supporting and fixing the CDU. Two handles are symmetrically installed on the top of the housing. A heat exchanger is installed on the inner wall of the bottom of the housing. The bottom of the heat exchanger is connected to a liquid outlet, and the top of the heat exchanger is connected to a liquid inlet. Three water pipes are connected to the top of the heat exchanger, and each of the three water pipes is equipped with a check valve. Three frame plates are screwed to the top of the housing, and each of the three frame plates is equipped with a circulation pump. The three circulation pumps are connected to the three water pipes via plug-in connections.
[0007] The heat exchanger is one of the core components of the CDU. It transfers heat from equipment such as servers to the cold water in the side pipes through liquid-liquid heat exchange.
[0008] The circulating pump is one of the core components of the CDU. The integrated single-phase immersion liquid-cooled CDU uses a high-flow small electric pump that is immersed in the coolant to drive the coolant circulation.
[0009] The check valve prevents coolant backflow when the circulating pump is replaced online, and a sealing ring is installed between the outlet of the circulating pump and the water pipe.
[0010] Preferably, the heat exchanger is equipped with a pressure gauge that monitors the outlet pressure of the circulating pump in real time.
[0011] Preferably, two side pipes are provided on the outside of the housing.
[0012] Preferably, an exhaust valve is provided on the side pipe to promptly release the air inside the side pipe.
[0013] Compared with the prior art, the advantages of this utility model are:
[0014] This utility model features an integrated single-phase immersion liquid-cooled CDU design, achieving efficient layout within a minimal space. It eliminates the need for secondary-side piping connections between the CDU and the liquid-cooling cabinet, thus avoiding the space requirements and leakage risks associated with secondary-side piping, significantly saving space and improving reliability. It also eliminates the complex internal piping connections of the CDU, reducing the risk of leakage. Furthermore, the circulating pump supports online replacement, greatly improving maintenance efficiency. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the integrated single-phase immersion liquid-cooled CDU structure designed for this project.
[0016] In the diagram: 1. Box body; 2. Liquid outlet; 3. Heat exchanger; 4. Liquid inlet; 5. Pressure gauge; 6. Check valve; 61. Water pipe; 7. Circulating pump; 71. Frame plate; 8. Air vent valve; 9. Side pipe; 11. Handle. Detailed Implementation
[0017] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.
[0018] See Figure 1 As shown, an integrated single-phase immersion liquid-cooled CDU includes a housing 1, which serves as a support and fixing structure for the CDU. Two handles 11 are symmetrically installed on the top of the housing 1. A heat exchanger 3 is installed on the inner wall of the bottom of the housing 1. The bottom of the heat exchanger 3 is connected to a liquid outlet 2, and the top of the heat exchanger 3 is connected to a liquid inlet 4. Three water pipes 61 are connected to the top of the heat exchanger 3. Each of the three water pipes 61 is equipped with a check valve 6. Three frame plates 71 are installed on the top of the housing 1 by screws. Each of the three frame plates 71 is equipped with a circulation pump 7. The three circulation pumps 7 are connected to the three water pipes 61 by plug-in connection.
[0019] Heat exchanger 3 is one of the core components of CDU. It transfers heat from equipment such as servers to the cold water in side pipe 9 through liquid-liquid heat exchange.
[0020] The circulating pump 7 is one of the core components of the CDU. The integrated single-phase immersion liquid-cooled CDU uses a high-flow small electric pump that is immersed in the coolant to drive the coolant circulation.
[0021] The check valve 6 prevents the backflow of coolant when the circulating pump 7 is replaced online. A sealing ring is provided between the outlet of the circulating pump 7 and the water pipe 61.
[0022] In this embodiment, a pressure gauge 5 is installed on the heat exchanger 3, and the pressure gauge 5 monitors the outlet pressure of the circulating pump 7 in real time.
[0023] In this embodiment, two side pipes 9 are provided on the outside of the housing 1, and an exhaust valve 8 is provided on the side pipes 9 to promptly discharge the air in the side pipes 9.
[0024] This utility model is not limited to the above-described preferred embodiment. Anyone can derive other products in various forms under the guidance of this utility model. However, regardless of any changes made in its shape or structure, any technical solution that is the same as or similar to this utility model is within its protection scope.
Claims
1. An integrated single-phase immersion liquid-cooled CDU, comprising a housing (1), characterized in that: A heat exchanger (3) is provided on the bottom inner wall of the box (1). The bottom of the heat exchanger (3) is connected to a liquid outlet (2). The top of the heat exchanger (3) is provided with a liquid inlet (4). The top of the heat exchanger (3) is connected to three water pipes (61). Each of the three water pipes (61) is equipped with a check valve (6). The top of the box (1) is installed with three frame plates (71) by screws. Each of the three frame plates (71) is equipped with a circulation pump (7). The three circulation pumps (7) are connected to the three water pipes (61) by plugging.
2. The integrated single-phase immersion liquid-cooled CDU according to claim 1, characterized in that: A pressure gauge (5) is installed on the heat exchanger (3), and the pressure gauge (5) monitors the outlet pressure of the circulating pump (7) in real time.
3. The integrated single-phase immersion liquid-cooled CDU according to claim 1, characterized in that: Two side pipes (9) are provided on the outside of the box (1).
4. The integrated single-phase immersion liquid-cooled CDU according to claim 3, characterized in that: An exhaust valve (8) is provided on the side pipe (9) to exhaust the air in the side pipe (9).
5. The integrated single-phase immersion liquid-cooled CDU according to claim 1, characterized in that: A sealing ring is provided between the outlet of the circulating pump (7) and the water pipe (61).
6. The integrated single-phase immersion liquid-cooled CDU according to claim 1, characterized in that: Two handles (11) are symmetrically installed on the top of the box (1).