Large-cooling-capacity rack type CDU

Abstract

The utility model provides a large-cooling-capacity rack type CDU, which relates to the field of heat exchangers and comprises a primary flow path, a secondary flow path, a heat exchanger, two pumps, a frame body, a valve block and an electric control assembly, through reasonable layout of the primary flow path, the secondary flow path, the heat exchanger, the two pumps, the frame body, the valve block and the electrical control assembly in the rectangular storage area of the frame body, the problem that an existing CDU is poor in refrigeration effect is solved, selection of the pump with the larger size and the heat exchanger with the larger size is achieved in the limited cabinet space, and the cost is reduced. Therefore, a better refrigeration effect on the server is achieved through larger flow and a better cooling effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to the heat exchanger field especially relates to big cold capacity rack type CDU. BACKGROUND

[0002] In the operation process of the data center, efficient heat dissipation is a key factor to guarantee stable operation of equipment. The coolant distribution unit (CDU) as the core equipment of the data center heat dissipation system, its performance directly affects the operation efficiency and stability of the data center.

[0003] In the prior art, such as the refrigerant circulating device disclosed in Chinese patent application No. 202410891178.3, it is a typical CDU. This patent describes the specific structure and working principle of such CDU in detail. However, due to the limitation of cabinet standard size, the single pump flow of the traditional CDU can only reach 40L / min in the limited cabinet space of 900mm long, 480mm wide and 177mm high. Under the working condition of 8-degree temperature difference, i.e. the inlet temperature of the primary side is 32℃ and the supply temperature of the secondary side is 40℃, the refrigerating capacity is only 80kW. This is mainly because the heat exchanger in the existing CDU is small, which cannot provide enough heat exchange area, so that the heat transfer efficiency between the primary refrigerant and the secondary refrigerant is limited; at the same time, the size of the pump is also small, and its capacity of transporting refrigerant is limited, resulting in low refrigeration cycle efficiency of the whole system.

[0004] In addition, due to the small size of the heat exchanger and the pump, the internal layout of the existing CDU is relatively simple. Although this simple layout reduces the complexity of design and manufacturing to some extent, it also limits the space for improving the performance of the equipment. With the continuous expansion of the scale of data centers and the continuous improvement of server performance, the heat generated by data centers increases sharply, and the demand for refrigerating capacity also increases. However, under the condition that the standard size of the cabinet does not change, the refrigerating capacity of the existing CDU has been difficult to meet the actual demand. UTILITY MODEL CONTENTS

[0005] In view of the above technical problems, the large cold capacity rack type CDU provided by the utility model can achieve better refrigeration effect in the limited cabinet space.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0007] The utility model provides a big cold quantity frame type CDU, including primary flow path, secondary flow path, heat exchanger, two pumps, frame, valve block and electrical control assembly, the primary flow path is the flow path of primary refrigerant, the secondary flow path is the flow path of secondary refrigerant, the heat exchanger is connected with primary flow path and secondary flow path, the pump is connected with secondary flow path, the frame has the storage area, the storage area is rectangular space, the storage area has long, wide, high, the long left and right direction of storage area extends, the wide front and back direction of storage area extends, the high of storage area extends, the pump is located the left side of valve block, two the pump front and back direction is attached and sets up, the valve block is located the left side of heat exchanger, the rear end of pump in rear side is flush with the rear end of heat exchanger, the valve block includes two pump inlet connecting port, two pump outlet connecting port, liquid outlet and liquid inlet, two pump inlet connecting port communicates with liquid inlet, two pump outlet connecting port communicates with liquid outlet, the pump inlet connecting port, pump outlet connecting port is set up in the left side of valve block, the liquid outlet, liquid inlet is set up in the right side of valve block, one way valve is provided on the pipeline from pump outlet connecting port to liquid outlet, the inlet and outlet of pump communicate one pump inlet connecting port and pump outlet connecting port respectively, the heat exchanger has import A, import B, export A and export B, import A and export A are the import and export of primary flow path in heat exchanger, import B and export B are the import and export of secondary flow path in heat exchanger, export B is on the upside of import A, import B is on the upside of export A, export B is on the left side of import B, import A is on the left side of export A, the primary flow path includes primary side import pipeline and primary side export pipeline, one end of primary side import pipeline communicates with import A, and the other end communicates to the right side outside of frame, one end of primary side export pipeline communicates with export A, and the other end communicates to the right side outside of frame, the secondary flow path includes secondary side export pipeline, secondary side import pipeline A, secondary side import pipeline B, one end of secondary side export pipeline communicates with liquid outlet, and the other end communicates to the right side outside of frame, one end of secondary side import pipeline B communicates with liquid inlet, and the other end communicates with export B, one end of secondary side import pipeline A communicates with import B, and the other end communicates to the right side outside of frame, primary side import pipeline, primary side export pipeline, secondary side import pipeline A, secondary side import pipeline B, secondary side export pipeline all extend horizontally, primary side import pipeline, primary side export pipeline, secondary side import pipeline A, secondary side import pipeline B, secondary side export pipeline all are provided in the right side of valve block, primary side import pipeline, primary side export pipeline, secondary side import pipeline A, secondary side import pipeline B, secondary side export pipeline all are provided in front of heat exchanger.The primary side inlet pipeline and the primary side outlet pipeline are arranged below the secondary side inlet pipeline A and the secondary side inlet pipeline B; the secondary side outlet pipeline is arranged above the secondary side inlet pipeline A and the secondary side inlet pipeline B; and the electrical control assembly is arranged in front of the pump.

[0008] The large cold capacity rack type CDU further comprises a power module assembly, the power module assembly is arranged in front of the heat exchanger, and the power module assembly is arranged on the right of the electrical control assembly.

[0009] The large cold capacity rack type CDU further comprises an expansion tank, the expansion tank is arranged in front of the valve block, an expansion tank connecting hole is arranged on the valve block, the expansion tank connecting hole is communicated with the liquid outlet, and the expansion tank is communicated with the expansion tank connecting hole.

[0010] The large cold capacity rack type CDU further comprises an expansion tank, the expansion tank is arranged in front of the valve block, an expansion tank connecting hole is arranged on the valve block, the expansion tank connecting hole is communicated with the liquid outlet, and the expansion tank is communicated with the expansion tank connecting hole.

[0011] The large cold capacity rack type CDU further comprises an expansion tank, the expansion tank is arranged in front of the valve block, an expansion tank connecting hole is arranged on the valve block, the expansion tank connecting hole is communicated with the liquid outlet, and the expansion tank is communicated with the expansion tank connecting hole.

[0012] The large cold capacity rack type CDU further comprises an expansion tank, the expansion tank is arranged in front of the valve block, an expansion tank connecting hole is arranged on the valve block, the expansion tank connecting hole is communicated with the liquid outlet, and the expansion tank is communicated with the expansion tank connecting hole.

[0013] The large cold capacity rack type CDU further comprises an expansion tank, the expansion tank is arranged in front of the valve block, an expansion tank connecting hole is arranged on the valve block, the expansion tank connecting hole is communicated with the liquid outlet, and the expansion tank is communicated with the expansion tank connecting hole.

[0014] The large cold capacity rack type CDU further comprises an expansion tank, the expansion tank is arranged in front of the valve block, an expansion tank connecting hole is arranged on the valve block, the expansion tank connecting hole is communicated with the liquid outlet, and the expansion tank is communicated with the expansion tank connecting hole.

[0015] The large refrigeration capacity rack type CDU is provided with a liquid supplementing pipe, and the liquid supplementing pipe is connected to the outside of the frame body.

[0016] The left end of the electrical control assembly and the left end of the pump are flush.

[0017] The above technical scheme has the following advantages or beneficial effects:

[0018] The utility model provides a big cold -energy frame type CDU relates to heat exchanger field, including primary flow path, secondary flow path, heat exchanger, two pumps, frame, valve block and electrical control assembly, the primary flow path is the flow path of primary refrigerant, the secondary flow path is the flow path of secondary refrigerant, the heat exchanger is connected with primary flow path and secondary flow path, the pump is connected with secondary flow path, the frame has the storage area, the storage area is rectangular space, the storage area has long, wide, high, the long left and right direction of storage area extends, the wide front and back direction of storage area extends, the high of storage area extends, the pump sets up in valve block left side, two the pump front and back direction is close setting, the valve block sets up in heat exchanger left side, the rear end of pump in rear side is flush with heat exchanger rear end, the valve block includes two pump inlet connecting port, two pump outlet connecting port, liquid outlet and liquid inlet, two pump inlet connecting port with liquid inlet intercommunication, two pump outlet connecting port with liquid outlet intercommunication, the pump inlet connecting port, pump outlet connecting port set up in valve block left side, liquid outlet, liquid inlet set up in valve block right side, one -way valve is provided on the pipeline from pump outlet connecting port to liquid outlet, the inlet and outlet of pump intercommunication one pump inlet connecting port and pump outlet connecting port respectively, the heat exchanger has import A, import B, export A and export B, import A with export A is the import and export of primary flow path in heat exchanger, import B with export B is the import and export of secondary flow path in heat exchanger, export B is on the upside of import A, import B is on the upside of export A, export B is on the left side of import B, import A is on the left side of export A, the primary flow path includes primary side import pipeline and primary side export pipeline, one end of primary side import pipeline intercommunication with import A, the other end intercommunication to frame right side outside, one end of primary side export pipeline intercommunication with export A, the other end intercommunication to frame right side outside, the secondary flow path includes secondary side export pipeline, secondary side import pipeline A, secondary side import pipeline B, one end of secondary side export pipeline intercommunication with liquid outlet, the other end intercommunication to frame right side outside, one end of secondary side import pipeline B intercommunication with liquid inlet, the other end intercommunication with export B, one end of secondary side import pipeline A intercommunication with import B, the other end intercommunication to frame right side outside, primary side import pipeline, primary side export pipeline, secondary side import pipeline A, secondary side import pipeline B, secondary side export pipeline all horizontal direction extends, primary side import pipeline, primary side export pipeline, secondary side import pipeline A, secondary side import pipeline B, secondary side export pipeline all set up in valve block right side, primary side import pipeline, primary side export pipeline, secondary side import pipeline A, secondary side import pipeline B, secondary side export pipeline all set up in heat exchanger front.The primary side inlet pipeline and the primary side outlet pipeline are arranged below the secondary side inlet pipeline A and the secondary side inlet pipeline B; the secondary side outlet pipeline is arranged above the secondary side inlet pipeline A and the secondary side inlet pipeline B; and the electrical control assembly is arranged in front of the pump. The large cold capacity rack type CDU provided by the utility model solves the problem of poor refrigeration effect of the CDU in the prior art, and can achieve better refrigeration effect in limited cabinet space. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model and its features, shape and advantages will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. The same reference signs indicate the same parts throughout the drawings. The drawings are not necessarily drawn to scale, the emphasis being on illustrating the main principles of the utility model.

[0020] Figure 1 It is the overall structure schematic view of the large cold capacity rack type CDU provided by the utility model embodiment 1.

[0021] Figure 2 It is the structure layout overhead view in the storage area of the large cold capacity rack type CDU provided by the utility model embodiment 1.

[0022] Figure 3 It is the local structure schematic view of the hidden secondary outlet pipeline of the large cold capacity rack type CDU provided by the utility model embodiment 1.

[0023] Figure 4 It is the position relation schematic view of the primary side inlet main pipe and the primary side inlet bypass pipe of the large cold capacity rack type CDU provided by the utility model embodiment 1.

[0024] Figure 5 It is the heat exchanger structure schematic view of the large cold capacity rack type CDU provided by the utility model embodiment 1.

[0025] Figure 6 It is the left side structure schematic view of the valve block of the large cold capacity rack type CDU provided by the utility model embodiment 1.

[0026] Figure 7 It is the right side structure schematic view of the valve block of the large cold capacity rack type CDU provided by the utility model embodiment 1.

[0027] Figure 8 It is the cover plate structure schematic view of the large cold capacity rack type CDU provided by the utility model embodiment 1.

[0028] Figure 9 It is the structure schematic view of the large cold capacity rack type CDU provided by the utility model embodiment 1 after being equipped with the liquid supplementing pipe.

[0029] Figure 10 is a position diagram of a liquid supplement pipe after a large cold capacity rack type CDU is equipped with the liquid supplement pipe. DETAILED DESCRIPTION

[0030] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. It should be noted that the terms used in the present application are only for describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application.

[0031] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Therefore, the detailed description of the embodiments of the present application provided in the following drawings is not intended to limit the scope of the claimed present application, but only to represent selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0032] Embodiment 1:

[0033] The large cold capacity rack type CDU provided in the embodiment 1 of the present application, like Figures 1 to 10As shown, it comprises a primary flow path 1, a secondary flow path 2, a heat exchanger 3, two pumps 4, a frame 5, a valve block 6, an electrical control assembly 7 and a power module assembly 9; the primary flow path 1 is the flow path of the primary refrigerant; the secondary flow path 2 is the flow path of the secondary refrigerant; the heat exchanger 3 is connected with the primary flow path 1 and the secondary flow path 2; the pump 4 is connected with the secondary flow path 2; the frame 5 has a receiving area 51; the receiving area 51 is a rectangular space; the receiving area 51 has length, width and height; the length of the receiving area 51 extends horizontally; the width of the receiving area 51 extends vertically; the height of the receiving area 51 extends vertically; the pump 4 is arranged on the left side of the valve block 6; the two pumps 4 are arranged vertically; the valve block 6 is arranged on the left side of the heat exchanger 3; the rear end of the pump 4 on the rear side is flush with the rear end of the heat exchanger 3; the valve block 6 comprises two pump inlet connecting ports 61, two pump outlet connecting ports 62, a liquid outlet 63 and a liquid inlet 64; the two pump inlet connecting ports 61 are communicated with the liquid inlet 64; the two pump outlet connecting ports 62 are communicated with the liquid outlet 63; the pump inlet connecting port 61 and the pump outlet connecting port 62 are arranged on the left side of the valve block 6; the liquid outlet 63 and the liquid inlet 64 are arranged on the right side of the valve block 6; the inlet and the outlet of the pump 4 are respectively communicated with a pump inlet connecting port 61 and a pump outlet connecting port 62; the heat exchanger 3 has an inlet A31, an inlet B32, an outlet A33 and an outlet B34; the inlet A31 and the outlet A33 are the inlet and the outlet of the primary flow path 1 in the heat exchanger 3, and the inlet B32 and the outlet B34 are the inlet and the outlet of the secondary flow path 2 in the heat exchanger 3; the outlet B34 is above the inlet A31; the inlet B32 is above the outlet A33; the outlet B34 is on the left side of the inlet B32; the inlet A31 is on the left side of the outlet A33; the primary flow path 1 comprises a primary side inlet pipe 11 and a primary side outlet pipe 12; one end of the primary side inlet pipe 11 is communicated with the inlet A31, and the other end is communicated with the outside of the right side of the frame 5; the primary side inlet pipe 11 comprises a primary side inlet main pipe 111 and a primary side inlet bypass pipe 112; the primary side inlet main pipe 111 and the primary side inlet bypass pipe 112 share the inlet and the outlet of the primary side inlet pipe 11; the primary side inlet main pipe 111 is provided with a first control ball valve 1111; the first control ball valve 1111 can control the flow of the primary side inlet main pipe 111; the electric actuator of the first control ball valve 1111 is arranged above the primary side inlet main pipe 111; the primary side inlet bypass pipe 112 is provided with a second control ball valve 1121; the second control ball valve 1121 can control the flow of the primary side inlet bypass pipe 112; the electric actuator of the second control ball valve 1121 is arranged above the primary side inlet bypass pipe 112; the electric actuators of the first control ball valve 1111 and the second control ball valve 1121 are arranged in front of the secondary side outlet pipe 21; one end of the primary side outlet pipe 12 is communicated with the outlet A33, and the other end is communicated with the outside of the right side of the frame 5; the secondary flow path 2 comprises a secondary side outlet pipe 21, a secondary side inlet pipe A22 and a secondary side inlet pipe B23;The one end of the secondary side outlet pipeline 21 is communicated with the liquid outlet 63, and the other end is communicated to the right side of the frame body 5. The flow meter 211 is arranged on the secondary side outlet pipeline 21. The electric actuator of the flow meter 211 is arranged on the right side of the secondary side inlet pipeline B23. The one end of the secondary side inlet pipeline B23 is communicated with the liquid inlet 64, and the other end is communicated with the outlet B34. The one end of the secondary side inlet pipeline A22 is communicated with the inlet B32, and the other end is communicated to the right side of the frame body 5. The primary side inlet pipeline 11, the primary side outlet pipeline 12, the secondary side inlet pipeline A22, the secondary side inlet pipeline B23 and the secondary side outlet pipeline 21 all extend horizontally. The primary side inlet pipeline 11, the primary side outlet pipeline 12, the secondary side inlet pipeline A22, the secondary side inlet pipeline B23 and the secondary side outlet pipeline 21 are all arranged on the right side of the valve block 6. The primary side inlet pipeline 11, the primary side outlet pipeline 12, the secondary side inlet pipeline A22, the secondary side inlet pipeline B23 and the secondary side outlet pipeline 21 are all arranged in front of the heat exchanger 3. The primary side inlet pipeline 11 and the primary side outlet pipeline 12 are arranged below the secondary side inlet pipeline A22 and the secondary side inlet pipeline B23. The secondary side outlet pipeline 21 is arranged above the secondary side inlet pipeline A22 and the secondary side inlet pipeline B23. The electrical control assembly 7 and the power module assembly 9 are arranged in front of the valve block 6 from left to right.

[0034] The utility model discloses a large cold quantity rack type CDU provided in the embodiment 1, and one -time refrigerant circulates and flows in one -time flow path 1 when working, provides cold source for whole heat exchange process, one -time side import pipeline 11 in one -time flow path 1 is responsible for introducing low -temperature one -time refrigerant, and it is communicated to the liquid supply source of frame body 5 right side outside in one end, and the other end is connected with the import A31 of heat exchanger 3, so that one -time refrigerant can enter heat exchanger 3, in this process, one -time side import main pipe 111 and one -time side import bypass pipe 112 in one -time side import pipeline 11 play important flow regulating effect, first control ball valve 1111 and its electric actuating mechanism are according to the operation demand of system, and the flow of one -time side import main pipe 111 is accurately controlled by changing the opening, and the electric actuating mechanism is located above one -time side import main pipe 111, and it is convenient to operate and feedback regulation, and similarly, second control ball valve 1121 and its electric actuating mechanism regulate and control the flow of one -time side import bypass pipe 112, and based on the information (such as temperature, pressure change etc.) of the feedback of two -time side export pipeline 21, flow adjustment decision is made quickly, and the flow of one -time refrigerant entering heat exchanger 3 is stabilized and adapted to the working condition, one -time refrigerant entering heat exchanger 3 flows in the specific flow channel in heat exchanger 3, and after heat exchange with two -time refrigerant in two -time flow path 2, one -time refrigerant with temperature rising flows out from the export A33 of heat exchanger 3 and is discharged to the recovery system outside frame body 5 right side through one -time side export pipeline 12, and one -time side export pipeline 12 also plays the role of conveying channel, and guarantees the smoothness of one -time refrigerant circulation path, two -time refrigerant circulates in two -time flow path 2, and two -time refrigerant is directly cooled to the external server and exchanges heat with one -time refrigerant in the heat exchanger, two -time side import pipeline A22 and two -time side import pipeline B23 of two -time flow path 2 are introduced from different positions two -time refrigerant needing cooling, one end of two -time side import pipeline A22 is communicated to the load end outside frame body 5 right side, and after introducing two -time refrigerant with higher temperature, it is connected with the import B32 of heat exchanger 3, so that two -time refrigerant enters heat exchanger 3, one end of two -time side import pipeline B23 is communicated with the liquid inlet 64 of valve block 6, and by means of the internal flow channel structure of valve block 6, expansion tank (the role is described in the following) is introduced and is connected with the export B34 of heat exchanger 3, in heat exchanger 3, two -time refrigerant and one -time refrigerant exchange heat through the efficient heat exchange structure of heat exchanger 3, and two -time refrigerant is reduced in temperature after heat release and flows out from heat exchanger 3, and then, two -time refrigerant converges to two -time side export pipeline 21, one end of two -time side export pipeline 21 is communicated with the liquid outlet 63 of valve block 6, and under the drive of pump 4, two -time refrigerant is distributed reasonably in valve block 6, and flows out from two pump outlet connecting ports 62, and enters two pumps 4 respectively, and pump 4 provides power to overcome flow resistance and pushes two -time refrigerant to circulate continuously in two -time flow path 2.Two pumps 4 are adopted, which can realize one standby and one use on one hand, and can also prolong the service life of the whole CDU through the rotation work of the two pumps 4 on the other hand; the two pumps 4 are arranged in a front-rear direction and are attached to the left side of the valve block 6, which is a layout mode for saving space; they operate under the unified control of the electrical control assembly 7, the electrical control assembly 7 accurately adjusts the speed, start-stop and other operations of the pump 4 according to the system preset parameters and the instructions sent by various sensors, to ensure that the secondary refrigerant circulation meets the large cold load refrigeration demand; the power module assembly 9 converts the external power supply into the power required by the internal electrical components, and is mainly responsible for the conversion and distribution of power; the power module assembly 9 provides adaptive power for the components that need power driving, such as the pump 4, the electric actuator, the electrical control assembly 7, etc., to ensure the stable operation of the whole system, and it is arranged in front of the valve block 6 from left to right, which is convenient for line connection and collaborative work with other control components, reduces line loss and interference; the valve block 6 is the key hub of the secondary flow path 2, the two pump inlet connection ports 61 in the valve block 6 are communicated with the liquid inlet port 64, and the two pump outlet connection ports 62 are communicated with the liquid outlet port 63 (it needs to be particularly pointed out that, in order to ensure the stable one-way flow of the refrigerant, a one-way valve is arranged on the pipeline from the pump outlet connection port 62 to the liquid outlet port 63. If there is no such one-way pump, the refrigerant flowing out of the pump outlet of the opened pump may flow into the pump outlet of the closed pump, pass through the inside of the closed pump, and flow out of the pump inlet of the closed pump, thereby affecting the normal operation of the flow path), which realizes the efficient distribution and collection of the secondary refrigerant between the pump 4 and the external pipeline, and the connection ports are reasonably arranged on the left and right sides of the valve block 6, which optimizes the internal flow channel design, reduces the flow resistance and pressure loss, and ensures the smooth inflow and outflow of the secondary refrigerant. The rear end of the pump 4 located at the rear side is flush with the rear end of the heat exchanger 3; the pump 4 and the heat exchanger 3 are closely attached in the front-rear direction of the frame body storage area 51, fully utilize the space, avoid the waste of local space in the front-rear direction, and make the internal layout of the equipment more compact. In the above description, the rear end of the pump 4 refers to the situation that the inlet and outlet of the pump 4 are fixed to the right in the storage area 51, and the rear end of the pump 4 in this case. The frame body 5 and the storage area 51 thereof provide physical support and protection for all components; the rectangular storage area 51 is designed to extend in the long-left-right direction, the wide-front-rear direction and the high-up-down direction, so that the components such as the primary flow path 1, the secondary flow path 2, the heat exchanger 3, the pump 4 and the valve block 6 can be compactly and reasonably installed therein, which is convenient for production and assembly, and also convenient for later maintenance and repair, to ensure the stability of the whole large cold load rack type CDU during operation. It also needs to be pointed out that the storage area 51 has three dimensions of length, width and height in this embodiment.In the conventional placement state of the embodiment structure, the long direction extends along the left-right direction, the width direction extends along the front-rear direction, and the height direction extends along the up-down direction; however, it should be noted that the placement mode of the equipment provided by the embodiment is not limited to this one; in actual application, there are also many other situations such as inverted placement and side placement, and in these special placement states, the up-down, left-right and front-rear directions may be reversed; and the front-rear and up-down directions, the front-rear and left-right directions, and the up-down and left-right directions may be exchanged. In addition, the electrical connection mode between the two pumps, the electrical control assembly 7 and the power module assembly 9 is the prior art, and will not be described in detail here.

[0035] Compared with the CDU in the prior art, the embodiment realizes efficient use of the accommodation area 51 in the frame body 5 by controlling the layout positions of the structures in the CDU, so that a pump with a larger size and higher performance, and a heat exchanger with a larger size and higher performance can be used compared with the prior art, thereby realizing a larger flow and a larger cooling capacity; in the same limited cabinet space size of 900 mm long, 480 mm wide and 177 mm high, a single pump flow of more than 130 L / min and a refrigerating capacity of more than 120 kW are realized.

[0036] As a preferred mode, the embodiment further includes an expansion tank 10; the expansion tank 10 is arranged in front of the valve block 6; the valve block 6 is provided with an expansion tank connecting hole 65; the expansion tank connecting hole 65 is in communication with the liquid outlet 63; and the expansion tank 10 is in communication with the expansion tank connecting hole 65. The expansion tank 10 is the prior art, and the specific structure will not be described in detail here; the embodiment adds the expansion tank 10 to buffer pressure fluctuations; in the refrigerant circulation process, factors such as the start-stop of the pump 4, load changes and uneven heat transfer in the heat exchange process will cause fluctuations in the refrigerant pressure in the secondary flow path 2; the expansion tank 10 is in communication with the liquid outlet 63; when the pressure rises, the excess refrigerant can flow into the expansion tank 10, compress the gas in the tank, absorb pressure energy, and alleviate the trend of instantaneous rise of system pressure; when the pressure decreases, the compressed gas in the expansion tank 10 expands, pushes the refrigerant back to the secondary flow path 2, supplements the pressure, maintains the stability of the system pressure, ensures the operation of each component in a relatively stable pressure environment, reduces the risk of component damage caused by pressure impact, and prolongs the service life of the equipment; in addition, the stable pressure environment realized by the expansion tank 10 can prevent the pump 4 from being subjected to adverse conditions such as cavitation and overload under pressure surges; the pump 4 operates more efficiently under the design condition, reduces energy consumption, and also reduces the maintenance frequency caused by abnormal conditions.

[0037] In actual operation, the flow regulation can be realized by setting a ball valve in the primary side inlet pipeline 11, but the ball valve may fail due to wear, corrosion, seal failure and other reasons during use. To solve this problem, in the embodiment, the primary side inlet pipeline 11 includes a primary side inlet main pipe 111 and a primary side inlet bypass pipe 112; the primary side inlet main pipe 111 and the primary side inlet bypass pipe 112 share the inlet and outlet of the primary side inlet pipeline 11; the primary side inlet main pipe 111 is provided with a first control ball valve 1111; the first control ball valve 1111 can control the flow of the primary side inlet main pipe 111; the electric actuator of the first control ball valve 1111 is arranged above the primary side inlet main pipe 111; the primary side inlet bypass pipe 112 is provided with a second control ball valve 1121; the second control ball valve 1121 can control the flow of the primary side inlet bypass pipe 112; the electric actuator of the second control ball valve 1121 is arranged above the primary side inlet bypass pipe 112; the electric actuators of the first control ball valve 1111 and the second control ball valve 1121 are both arranged in front of the secondary side outlet pipeline 21. In the embodiment, the primary side inlet main pipe 111 and the primary side inlet bypass pipe 112 are arranged, and the first control ball valve 1111 and the second control ball valve 1121 are arranged respectively to control, when the first control ball valve 1111 fails, the second control ball valve 1121 can be quickly enabled to ensure the normal circulation of the primary refrigerant in the primary side inlet pipeline 11 and maintain the refrigeration function of the system; in this way, the failure of a single valve can be avoided to cause the shutdown of the entire large cold load rack type CDU system, the continuous and stable operation of the equipment in the data center and other places can be ensured, and the losses caused by the interruption of refrigeration, such as equipment damage and data loss, can be reduced; when one of the ball valves is subjected to periodic maintenance, repair or replacement of the sealing element, the other ball valve can continue to work to ensure the continuous operation of the system, and the maintenance personnel can process the valve that fails or needs maintenance without affecting the normal refrigeration of the system. In addition, during frequent opening and closing of the valve, the valve core, valve seat and other components may be worn, and if the same valve is used all the time, the wear of the valve will accelerate, thereby shortening the service life of the valve. The structure of the embodiment can balance the wear of the first control ball valve 1111 and the second control ball valve 1121 by alternating use of the two valves, thereby avoiding excessive wear of a single valve; the first control ball valve 1111 is used to regulate the flow for a period of time, and then the second control ball valve 1121 is switched to, so that the use time and frequency of each valve are relatively reduced, the overall service life is prolonged, and the replacement cost of the equipment is reduced.

[0038] In the embodiment, the secondary side outlet pipeline 21 is provided with a flow meter 211; the preferred flow meter 211 of the embodiment is an ultrasonic flow meter. The flow meter 211 monitors the flow in the secondary flow path. The flow meter 211 is arranged on the lower side of the secondary side outlet pipeline 21 and the right side of the secondary side inlet pipeline B23, which is beneficial to avoid interference from other components, facilitate installation, debugging and maintenance, make the entire pipeline layout more reasonable and compact, and facilitate observation and operation by the operator. The ultrasonic flow meter is prior art. After installation, it does not need to be in direct contact with the fluid in the pipe and will not hinder the flow of the fluid in the pipe during measurement, so it will not cause a pressure drop in the pipe, greatly reducing the impact on the flow of the secondary refrigerant and ensuring efficient operation of the system.

[0039] In the embodiment, the left side of the frame body 5 is a cover plate 52; a plurality of heat dissipation holes 521 are formed in the cover plate 52; a touch screen 522 is fixed on the cover plate 52; and the touch screen 522 is fixed on the left side of the electrical control assembly 7. Fixing the touch screen 522 on the left side of the electrical control assembly 7 can facilitate electrical connection of the touch screen 522 and the electrical control assembly 7; the plurality of heat dissipation holes 521 are arranged on the cover plate 52 to allow heat generated by the pump 4 to be discharged from the frame body 5 to the outside; the touch screen 522 is usually arranged in a direction that is convenient for the staff to use, so that the cover plate 52 is the convenient-to-use side after the CDU is installed. The cover plate 52 can be detached, and after the pump 4 fails, the pump 4 can be exposed from the storage area 51 of the frame body 5 by directly opening the cover plate 52, thereby facilitating maintenance of the pump 4. In the preferred embodiment, the pump 4 is hot-pluggable and fixed with the valve block 6.

[0040] In the embodiment, the inlet of the pump 4 is connected to the pump inlet connecting port 61 through a blind plug connector, and the outlet of the pump 4 is connected to the pump outlet connecting port 62 through a blind plug connector. The blind plug connector is prior art, and the structure of the blind plug connector is described in the floating module, blind plug connector and liquid cooling system disclosed in Chinese Patent Application No. 202411188607.7. In the embodiment, the connection mode of the blind plug connector can achieve the technical effect of replacing the pump without stopping the machine and without water leakage during replacement.

[0041] In the embodiment, one of the secondary side outlet pipeline 21, the secondary side inlet pipeline A 22, the secondary side inlet pipeline B 23 is also communicated with a liquid supplement pipeline 221. The preferred implementation of the fixed liquid supplement pipeline 221 in the embodiment is as follows: the liquid supplement pipeline 221 is communicated on the secondary side inlet pipeline A 22; the liquid supplement pipeline 221 is extended in the front direction on the secondary side inlet pipeline A 22, and a bypass is communicated on the right of the liquid supplement pipeline 221 and passes out from the right side of the frame body 5; a liquid supplement port of the liquid supplement pipeline 221 is communicated to the outside of the right side of the frame body 5; a liquid supplement valve 2211 is arranged at the liquid supplement port; and the liquid supplement valve 2211 can control the opening and closing of the liquid supplement port. In the long-term operation of the CDU, the secondary refrigerant will be lost due to various reasons, such as a small leakage in the system, evaporation loss of part of the refrigerant in the heat exchange process, etc.; the existence of the liquid supplement pipeline 221 can ensure the sufficiency of the refrigerant in the secondary flow path 2 by externally connecting the secondary refrigerant, and maintain the normal refrigeration cycle of the system.

[0042] In the preferred embodiment, the left end of the electrical control assembly 6 is aligned with the left end of the pump 4; the electrical control assembly 6 and the pump 4 are aligned at the left edge, which aims to reduce the spatial redundancy in the left-right direction, realize the reasonable installation of more components in the limited cabinet space, and improve the overall integration of the equipment. The touch screen 522 is fixed on the cover plate 52.

[0043] The utility model provides a big cold -capacity rack type CDU relates to heat exchanger field, including primary flow path, secondary flow path, heat exchanger, two pumps, frame, valve block and electrical control assembly, the primary flow path is the flow path of primary refrigerant, the secondary flow path is the flow path of secondary refrigerant, the heat exchanger is connected with primary flow path and secondary flow path, the pump is connected with secondary flow path, the frame has the storage area, the storage area is rectangular space, the storage area has long, wide, high, the long left and right direction of storage area extends, the wide front and back direction of storage area extends, the high of storage area extends, the pump is arranged in valve block left side, two pump front and back direction is arranged and clings, the valve block is arranged in heat exchanger left side, the rear end of pump in rear side is flush with heat exchanger rear end, the valve block includes two pump inlet connecting port, two pump outlet connecting port, liquid outlet and liquid inlet, two pump inlet connecting port communicates with liquid inlet, two pump outlet connecting port communicates with liquid outlet, the pump inlet connecting port, pump outlet connecting port is set up in valve block left side, the liquid outlet, liquid inlet is set up in valve block right side, one -way valve is provided on the pipeline from pump outlet connecting port to liquid outlet, the inlet and outlet of pump communicate one pump inlet connecting port and pump outlet connecting port respectively, the heat exchanger has import A, import B, export A and export B, import A and export A are the import and export of primary flow path in heat exchanger, import B and export B are the import and export of secondary flow path in heat exchanger, export B is on the upside of import A, import B is on the upside of export A, export B is on the left side of import B, import A is on the left side of export A, the primary flow path includes primary side import pipeline and primary side export pipeline, one end of primary side import pipeline communicates with import A, and the other end communicates to frame right side outside, one end of primary side export pipeline communicates with export A, and the other end communicates to frame right side outside, the secondary flow path includes secondary side export pipeline, secondary side import pipeline A, secondary side import pipeline B, one end of secondary side export pipeline communicates with liquid outlet, and the other end communicates to frame right side outside, one end of secondary side import pipeline B communicates with liquid inlet, and the other end communicates with export B, one end of secondary side import pipeline A communicates with import B, and the other end communicates to frame right side outside, primary side import pipeline, primary side export pipeline, secondary side import pipeline A, secondary side import pipeline B, secondary side export pipeline all extend horizontally, primary side import pipeline, primary side export pipeline, secondary side import pipeline A, secondary side import pipeline B, secondary side export pipeline all are provided in valve block right side.The primary side inlet pipeline, the primary side outlet pipeline, the secondary side inlet pipeline A, the secondary side inlet pipeline B and the secondary side outlet pipeline are arranged in front of the heat exchanger; the primary side inlet pipeline and the primary side outlet pipeline are arranged below the secondary side inlet pipeline A and the secondary side inlet pipeline B; the secondary side outlet pipeline is arranged above the secondary side inlet pipeline A and the secondary side inlet pipeline B; and the electrical control assembly is arranged in front of the pump. The large cold capacity rack type CDU provided by the utility model solves the poor refrigeration effect problem in the prior art, and can realize better refrigeration effect in limited cabinet space.

[0044] The above description is only preferred embodiments of the utility model, and does not limit the patent range of the utility model, and equivalent structural transformation, direct or indirect application in other related technical fields by using the utility model specification and the attached drawing contents are also included in the patent protection range of the utility model.

Claims

1. A large-capacity rack-mounted CDU, comprising a primary flow path, a secondary flow path, a heat exchanger, two pumps, and a frame; the primary flow path is a primary refrigerant flow path; the secondary flow path is a secondary refrigerant flow path; the heat exchanger is connected to the primary flow path and the secondary flow path; the pumps are connected to the secondary flow path; the frame has a storage area; characterized in that, It also includes valve blocks and electrical control assemblies; The storage area is a rectangular space; the storage area has length, width, and height; the length of the storage area extends in the left-right direction; the width of the storage area extends in the front-back direction; the height of the storage area extends in the vertical direction. The pump is located to the left of the valve block; the two pumps are arranged close together in the front-to-back direction; the valve block is located to the left of the heat exchanger; the rear end of the pump located at the rear is flush with the rear end of the heat exchanger. The valve block includes two pump inlet connections, two pump outlet connections, a liquid outlet, and a liquid inlet; the two pump inlet connections are connected to the liquid inlet; the two pump outlet connections are connected to the liquid outlet; the pump inlet connections and the pump outlet connections are located on the left side of the valve block; the liquid outlet and the liquid inlet connections are located on the right side of the valve block; a one-way valve is installed on the pipeline from the pump outlet connection to the liquid outlet; the pump inlet and outlet are respectively connected to one of the pump inlet connections and one of the pump outlet connections; The heat exchanger has an inlet A, an inlet B, an outlet A, and an outlet B; the inlet A and the outlet A are the inlet and outlet of the primary flow path within the heat exchanger, and the inlet B and the outlet B are the inlet and outlet of the secondary flow path within the heat exchanger. The outlet B is above the inlet A; the inlet B is above the outlet A; the outlet B is to the left of the inlet B; the inlet A is to the left of the outlet A; The primary flow path includes a primary side inlet pipe and a primary side outlet pipe; One end of the primary side inlet pipe is connected to inlet A, and the other end is connected to the outside of the right side of the frame. One end of the primary side outlet pipe is connected to outlet A, and the other end is connected to the outside of the right side of the frame. The secondary flow path includes a secondary side outlet pipe, a secondary side inlet pipe A, and a secondary side inlet pipe B; One end of the secondary side outlet pipeline is connected to the liquid outlet, and the other end is connected to the outside of the right side of the frame. One end of the secondary side inlet pipe B is connected to the liquid inlet, and the other end is connected to the outlet B; One end of the secondary side inlet pipe A is connected to the inlet B, and the other end is connected to the outside of the right side of the frame. The primary side inlet pipe, the primary side outlet pipe, the secondary side inlet pipe A, the secondary side inlet pipe B, and the secondary side outlet pipe all extend horizontally; the primary side inlet pipe, the primary side outlet pipe, the secondary side inlet pipe A, the secondary side inlet pipe B, and the secondary side outlet pipe are all located on the right side of the valve block; the primary side inlet pipe, the primary side outlet pipe, the secondary side inlet pipe A, the secondary side inlet pipe B, and the secondary side outlet pipe are all located in front of the heat exchanger; The primary side inlet pipe and the primary side outlet pipe are located below the secondary side inlet pipe A and the secondary side inlet pipe B; The secondary side outlet pipe is located above the secondary side inlet pipe A and the secondary side inlet pipe B; The electrical control assembly is located in front of the pump.

2. The large-capacity rack-mount CDU as described in claim 1, characterized in that, It also includes a power module assembly; the power module assembly is located in front of the heat exchanger; the power module assembly is located to the right of the electrical control assembly.

3. The large-capacity rack-mount CDU as described in claim 1, characterized in that, It also includes an expansion tank; the expansion tank is located in front of the valve block; The valve block is provided with an expansion tank connection hole; the expansion tank connection hole is connected to the liquid outlet. The expansion tank is connected to the expansion tank connection hole.

4. The large-capacity rack-mount CDU as described in claim 1, characterized in that, The primary side inlet pipeline includes a primary side inlet main pipe and a primary side inlet bypass pipe; the primary side inlet main pipe and the primary side inlet bypass pipe share the inlet and outlet of the primary side inlet pipeline; A first control ball valve is provided on the primary side inlet pipe; the first control ball valve can control the flow rate of the primary side inlet pipe; the electric actuator of the first control ball valve is located above the primary side inlet pipe. A second control ball valve is provided on the primary side inlet bypass pipe; the second control ball valve can control the flow rate of the primary side inlet bypass pipe; the electric actuator of the second control ball valve is located above the primary side inlet bypass pipe. The electric actuators of the first control ball valve and the second control ball valve are both located in front of the secondary side outlet pipeline.

5. The large-capacity rack-mount CDU as described in claim 1, characterized in that, A flow meter is installed on the secondary side outlet pipe.

6. The large-capacity rack-mount CDU as described in claim 5, characterized in that, The flow meter is an ultrasonic flow meter.

7. The large-capacity rack-mount CDU as described in claim 1, characterized in that, The left side of the frame is a cover plate; the cover plate has multiple heat dissipation holes; a touch screen is fixed on the cover plate; the touch screen is fixed to the left side of the electrical control assembly.

8. The large-capacity rack-mount CDU as described in claim 1, characterized in that, The pump inlet is connected to the pump inlet connection port via a blind-fit connector; The pump outlet is connected to the pump outlet connection port via a blind-fit connector.

9. The large-capacity rack-mount CDU as described in claim 1, characterized in that, One of the secondary side outlet pipe, the secondary side inlet pipe A, and the secondary side inlet pipe B is also connected to a replenishment pipe; the replenishment port of the replenishment pipe is connected to the outside of the frame.

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