Wind-liquid fusion system

Abstract

The utility model relates to the technical field of refrigerating systems, in particular to an air-liquid fusion system which comprises a CDU cabinet, an air cooling system and a liquid cooling system. A heat exchanger is arranged between the air cooling system and the liquid cooling system; the liquid cooling system comprises a first main water tank, a spraying pipe, a first wet film and a first water receiving disc; one end of the CDU cabinet is communicated with the spraying pipe; liquid sprayed by the spraying pipe enters the first water receiving disc after passing through the first wet film; the first water pan is communicated with the first main water tank; and the first main water tank is communicated with the other end of the CDU cabinet after passing through the heat exchanger. The air cooling system and the liquid cooling system are arranged, and heat exchange is carried out on the air cooling system and the liquid cooling system through the heat exchanger, so that air-liquid system fusion is achieved, and the heat dissipation requirement of a high-density machine room air conditioner is met.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration systems, in particular to an air-liquid fusion system. Background Art

[0002] With the rapid development of large data centers under the background of carbon neutrality, low carbon, energy saving and environmental protection have become hot topics in data center construction. At present, air cooling accounts for 80% of the data center market, and liquid cooling accounts for 20%. Among them, liquid cooling is to introduce the external circulating coolant into the CDU (Coolant Distribution Unit) of the cabinet of the server cluster, and then the coolant is diverted to the cold plate of each server for heat exchange through the cooperation of CDU and manifold, and then the reflux coolant is exported to the cabinet through CDU, thus completing a cooling cycle of the coolant.

[0003] However, with the development of AI intelligence, the trend of data centers towards high density has been accelerated, and the requirements for heat dissipation are constantly increasing. When the fan speed is constant, air cooling can effectively dissipate chip heat. When the heat dissipation requirements continue to surge and the air cooling reaches the power limit, its heat transfer thermal resistance will decrease slowly, resulting in reduced heat dissipation effect. Due to the stronger heat absorption capacity of liquids, in order to meet higher heat dissipation effects, the liquid cooling market has increased dramatically, but the initial investment in liquid cooling is high and the subsequent maintenance is complicated. Therefore, the combination of air cooling system and liquid cooling system is the best way to meet existing market needs.

[0004] Currently available integrated products not only require large amounts of work and a long construction period, but are also difficult to deploy quickly. How to integrate air cooling systems and liquid cooling systems into one system has become a technical challenge that the market urgently needs to overcome. Utility Model Content

[0005] The purpose of the utility model is to provide an air-liquid fusion system to address the above-mentioned deficiencies in the prior art, thereby realizing the fusion of air-liquid systems and meeting the heat dissipation requirements of air conditioners in high-density computer rooms.

[0006] The purpose of the utility model is achieved through the following technical solutions: an air-liquid fusion system, comprising a CDU cabinet, an air cooling system and a liquid cooling system; a heat exchanger is provided between the air cooling system and the liquid cooling system;

[0007] The liquid cooling system includes a first main water tank, a spray pipe, a first wet film and a first water receiving tray; one end of the CDU cabinet is connected to the spray pipe; the liquid sprayed from the spray pipe passes through the first wet film and enters the first water receiving tray; the first water receiving tray is connected to the first main water tank; the first main water tank is connected to the other end of the CDU cabinet after passing through a heat exchanger.

[0008] The utility model is further configured that the heat exchanger is provided with a first channel and a second channel; the first main water tank is connected with the other end of the CDU cabinet through the first channel.

[0009] The utility model is further configured that the air cooling system includes a first air cooling system; the first air cooling system includes a first compressor, a first condenser, a first evaporator, a first electronic expansion valve and a second electronic expansion valve;

[0010] One end of the first compressor is connected to the first condenser; the other end of the first condenser is connected to one end of the first electronic expansion valve; the other end of the first electronic expansion valve is connected to the other end of the first compressor through the first evaporator; the other end of the first condenser is connected to one end of the second electronic expansion valve; the other end of the second electronic expansion valve is connected to the other end of the first compressor through the second channel.

[0011] The utility model is further configured that the first air cooling system further includes a first fluorine pump; the first fluorine pump is arranged between the other end of the first condenser and one end of the first electronic expansion valve and between the other end of the first condenser and one end of the second electronic expansion valve;

[0012] The first compressor is provided with a first one-way valve; the first fluorine pump is provided with a second one-way valve.

[0013] The utility model is further configured that the heat exchanger further includes a third channel;

[0014] The air cooling system further comprises a second air cooling system; the second air cooling system comprises a second compressor, a second condenser, a second evaporator, a third electronic expansion valve and a fourth electronic expansion valve;

[0015] One end of the second compressor is connected to the second condenser; the other end of the second condenser is connected to one end of the third electronic expansion valve; the other end of the third electronic expansion valve is connected to the other end of the second compressor through the second evaporator; the other end of the second condenser is connected to one end of the fourth electronic expansion valve; the other end of the fourth electronic expansion valve is connected to the other end of the second compressor through the third channel.

[0016] The utility model is further configured that the second air cooling system further includes a second fluorine pump; the second fluorine pump is arranged between the other end of the second condenser and one end of the third electronic expansion valve and between the other end of the second condenser and one end of the fourth electronic expansion valve;

[0017] The second compressor is provided with a third one-way valve; the second fluorine pump is provided with a fourth one-way valve.

[0018] The utility model is further configured such that a first liquid storage tank is provided between the other end of the first condenser and the first fluorine pump.

[0019] The utility model is further configured such that a second liquid storage tank is provided between the other end of the second condenser and the second fluorine pump.

[0020] The utility model is further configured such that a second water receiving pan is provided at the first evaporator and the second evaporator; the second water receiving pan is connected to the first main water tank; an evaporating fan is provided at the first evaporator and the second evaporator; a condensing fan is provided at the first condenser and the second condenser; the evaporating fan is arranged at the first wet film.

[0021] An air-liquid fusion system comprises a CDU cabinet, an air cooling system and a liquid cooling system; a heat exchanger is arranged between the air cooling system and the liquid cooling system;

[0022] The liquid cooling system includes a second main water tank, a second wet membrane and an auxiliary water tank; the second main water tank is connected to one end of the CDU cabinet; the liquid in the second main water tank passes through the second wet membrane and enters the auxiliary water tank; the auxiliary water tank is connected to the other end of the CDU cabinet after passing through a heat exchanger.

[0023] Beneficial effects of the utility model: the utility model realizes the fusion of air-liquid system by setting up an air cooling system and a liquid cooling system, and exchanges heat between the air cooling system and the liquid cooling system through a heat exchanger, thereby meeting the heat dissipation requirements of the air conditioning in a high-density computer room. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the utility model. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0025] Figure 1 It is a structural principle diagram of Embodiment 1 of the present utility model;

[0026] Figure 2 It is a structural principle diagram of Embodiment 2 of the present utility model;

[0027] Figure 3 It is the control principle diagram of the utility model;

[0028] Among them: 1, CDU cabinet; 11, second water pump; 2, heat exchanger; 21, first channel; 22, second channel; 23, third channel; 31, first main water tank; 32, spray pipe; 33, first wet film; 34, first water tray; 35, first water pump; 41, first compressor; 42, first condenser; 43, first evaporator; 44, first electronic expansion valve; 45, second electronic expansion valve; 46, first fluorine pump; 47, first single 48. Second one-way valve; 49. First liquid storage tank; 51. Second compressor; 52. Second condenser; 53. Second evaporator; 54. Third electronic expansion valve; 55. Fourth electronic expansion valve; 56. Second fluorine pump; 57. Third one-way valve; 58. Fourth one-way valve; 59. Second liquid storage tank; 6. Second water tray; 71. Evaporating fan; 72. Condensing fan; 81. Second main water tank; 82. Second wet film; 83. Auxiliary water tank. DETAILED DESCRIPTION

[0029] The utility model is further described in conjunction with the following embodiments.

[0030] Embodiment 1, by Figure 1 It can be seen that the air-liquid fusion system described in this embodiment includes a CDU cabinet 1, an air cooling system and a liquid cooling system; a heat exchanger 2 is provided between the air cooling system and the liquid cooling system;

[0031] The liquid cooling system includes a first main water tank 31, a spray pipe 32, a first wet film 33 and a first water receiving tray 34; a first water pump 35 is provided between the first main water tank 31 and the first water receiving tray 34; one end of the CDU cabinet 1 is connected with the spray pipe 32; the liquid sprayed from the spray pipe 32 passes through the first wet film 33 and enters the first water receiving tray 34; the first water receiving tray 34 is connected with the first main water tank 31 through the first water pump 35; the first main water tank 31 is connected with the other end of the CDU cabinet 1 after passing through the heat exchanger 2; wherein the heat exchanger 2 is a water-fluorine heat exchanger.

[0032] Specifically, in the air-liquid fusion system described in this embodiment, in the liquid cooling system, after the liquid in the CDU cabinet 1 is sprayed by the spray pipe 32, the liquid with higher heat is sprayed to the first wet film 33, and the liquid after the first cooling by the first wet film 33 enters the first water receiving tray 34, and is then pumped to the first main water tank 31 by the first water pump 35. The liquid in the first main water tank 31 then flows into the heat exchanger 2 for secondary cooling, and is finally sent to the CDU cabinet 1 in the computer room, thereby realizing the circulation of the liquid cooling system; in addition, the air cooling system continuously provides coldness to the heat exchanger 2, so that the liquid in the liquid cooling system can be continuously cooled.

[0033] Compared with ordinary air-cooled computer room air conditioners, this embodiment realizes the integration of air and liquid systems to meet the heat dissipation requirements of high-density computer room air conditioners; compared with traditional systems, it can reduce the overall footprint of the air-cooled side, improve the degree of integrated prefabrication, reduce the amount of pipeline connection engineering, and reduce on-site secondary installation and construction; in addition, it reduces the load on the air-cooled side, uses the liquid-cooled side for more accurate temperature control, and reduces computer room noise; and after the indoor return air passes through the first wet film 33, on the one hand, the air supply temperature on the air-cooled side is reduced, and on the other hand, the return liquid temperature on the liquid-cooled side is reduced, thereby greatly improving the energy efficiency ratio of the whole machine.

[0034] In the air-liquid fusion system described in this embodiment, the heat exchanger 2 is provided with a first channel 21 and a second channel 22 ; the first main water tank 31 is connected to the other end of the CDU cabinet 1 through the first channel 21 .

[0035] In the present embodiment, the air-liquid fusion system includes a first air-cooling system; the first air-cooling system includes a first compressor 41, a first condenser 42, a first evaporator 43, a first electronic expansion valve 44 and a second electronic expansion valve 45;

[0036] One end of the first compressor 41 is connected to the first condenser 42; the other end of the first condenser 42 is connected to one end of the first electronic expansion valve 44; the other end of the first electronic expansion valve 44 is connected to the other end of the first compressor 41 through the first evaporator 43; the other end of the first condenser 42 is connected to one end of the second electronic expansion valve 45; the other end of the second electronic expansion valve 45 is connected to the other end of the first compressor 41 through the second channel 22.

[0037] Specifically, this embodiment forms two cycles by setting up a first compressor 41, a first condenser 42, a first evaporator 43, a first electronic expansion valve 44 and a second electronic expansion valve 45; one cycle is the first compressor 41-first condenser 42-first electronic expansion valve 44-first evaporator 43-first compressor 41, and the cold energy of the first evaporator 43 is transmitted to the equipment to be cooled in the machine room through the evaporating fan 71, thereby realizing air cooling.

[0038] The other route is the first compressor 41 - the first condenser 42 - the second electronic expansion valve 45 - the heat exchanger 2 - the first compressor 41, which transmits the refrigerant to the heat exchanger 2, thereby cooling the liquid in the liquid cooling system.

[0039] In the air-liquid fusion system described in this embodiment, the first air cooling system further includes a first fluorine pump 46; the first fluorine pump 46 is arranged between the other end of the first condenser 42 and one end of the first electronic expansion valve 44 and between the other end of the first condenser 42 and one end of the second electronic expansion valve 45;

[0040] The first compressor 41 is provided with a first one-way valve 47 ; the first fluorine pump 46 is provided with a second one-way valve 48 .

[0041] Specifically, in this embodiment, by providing the first fluorine pump 46 , the first air cooling system can operate in the compressor mode or the fluorine pump mode.

[0042] In the air-liquid fusion system described in this embodiment, the heat exchanger 2 further includes a third channel 23;

[0043] The air cooling system further includes a second air cooling system; the second air cooling system includes a second compressor 51, a second condenser 52, a second evaporator 53, a third electronic expansion valve 54 and a fourth electronic expansion valve 55;

[0044] One end of the second compressor 51 is connected to the second condenser 52; the other end of the second condenser 52 is connected to one end of the third electronic expansion valve 54; the other end of the third electronic expansion valve 54 is connected to the other end of the second compressor 51 through the second evaporator 53; the other end of the second condenser 52 is connected to one end of the fourth electronic expansion valve 55; the other end of the fourth electronic expansion valve 55 is connected to the other end of the second compressor 51 through the third channel 23. In the air-liquid fusion system described in this embodiment, the second air cooling system also includes a second fluorine pump 56; the second fluorine pump 56 is arranged between the other end of the second condenser 52 and one end of the third electronic expansion valve 54 and between the other end of the second condenser 52 and one end of the fourth electronic expansion valve 55; the second compressor 51 is provided with a third one-way valve 57; the second fluorine pump 56 is provided with a fourth one-way valve 58.

[0045] Specifically, the structure of the second air cooling system is the same as that of the first air cooling system. By providing two air cooling systems, the entire air-liquid fusion system can operate under different modes and working conditions and form mutual backup.

[0046] In the air-liquid fusion system described in this embodiment, a first liquid storage tank 49 is provided between the other end of the first condenser 42 and the first fluorine pump 46. The above arrangement can ensure that there is sufficient liquid refrigerant at the inlet of the fluorine pump, thereby enhancing the stability of the air-liquid fusion system.

[0047] In the wind-liquid fusion system described in this embodiment, a second liquid storage tank 59 is provided between the other end of the second condenser 52 and the second fluorine pump 56. The above arrangement can enhance the stability of the wind-liquid fusion system.

[0048] In the air-liquid fusion system described in this embodiment, a second water receiving pan 6 is provided at the first evaporator 43 and the second evaporator 53; the second water receiving pan 6 is connected to the first main water tank 31; an evaporation fan 71 is provided at the first evaporator 43 and the second evaporator 53; a condensation fan 72 is provided at the first condenser 42 and the second condenser 52; the evaporation fan 71 is provided at the first wet film 33. By providing the second water receiving pan 6, the condensed water condensed on the surface of the first evaporator 43 and the second evaporator 53 is drained into the first main water tank 31 through the second water receiving pan 6, which can reduce the water consumption and water replenishment amount of the unit.

[0049] In addition, the evaporation fan 71 is arranged at the first wet film 33, so that the indoor return air can be directly sent into the machine room after the first wet film 33 is cooled down for the first time, and then cooled down for the second time by the first evaporator 43 and the second evaporator 53.

[0050] The air-liquid fusion system described in this embodiment is configured with a first air cooling system and a second air cooling system, both of which are equipped with a compressor and a fluorine pump; so that the entire system can operate in a pure compressor working mode, a mixed working mode or a pure fluorine pump working mode.

[0051] like Figure 3 As shown, the air-liquid fusion system described in this embodiment provides a control method. After the system is turned on, it starts to perform self-check. If there is no refrigeration subsystem that can be turned on, the system reports a fault. After the fault is handled, it performs self-check again and enters the refrigeration subsystem based on the fault status.

[0052] When entering the air cooling mode and liquid cooling mode, the device is adjusted directly according to the air cooling / liquid cooling requirements. When entering the air-liquid fusion mode, the control is performed as described below:

[0053] Air cooling demand calculation formula:

[0054] CFC=100%×(Tr-Trs)÷Tcb

[0055] Tr: return air / supply air temperature detection value; Trs: return air / supply air temperature setting value; Tcb: temperature control accuracy (default 2℃)

[0056] Liquid cooling refrigeration demand calculation formula:

[0057] CFH=100%×(Trws-Trw)÷Twcb

[0058] Trw: return / outlet water temperature detection value; Trws: return / outlet water temperature setting value; Twcb: water temperature control accuracy (default 2°C);

[0059] Calculation of wind and liquid fusion requirements:

[0060] CFCr=CFC*A+CFH*B

[0061] A: Air cooling system configuration ratio (%); B: Liquid cooling system configuration ratio (%);

[0062] Electronic expansion valve control:

[0063] The opening degrees of the first electronic expansion valve 44 and the third electronic expansion valve 54 are controlled according to the target superheat (6-12° C.) at the outlets of the first evaporator 43 and the second evaporator 53 ;

[0064] The opening degrees of the second electronic expansion valve 45 and the fourth electronic expansion valve 55 are controlled according to the target superheat (6-12° C.) at the outlets of the second channel 22 and the third channel 23 of the heat exchanger 2;

[0065] A second water pump 11 is provided between the CDU cabinet 1 and the heat exchanger 2; the evaporating fan 71 and the condensing fan 72 control the rotation speed to adjust the air volume, thereby controlling the cooling output on the air cooling side; the second water pump 11 controls the rotation speed to adjust the water flow on the liquid cooling side, thereby controlling the cooling output on the liquid cooling side; because the heating value of the equipment to be cooled in the computer room is different from that of the server equipment, when cold water of the same temperature is provided externally, a large amount of cooling capacity of the cold plate on the liquid cooling side of the server equipment will be wasted, and separate control can avoid such cooling waste.

[0066] Embodiment 2, as Figure 2 As shown, the air-liquid fusion system described in this embodiment includes a CDU cabinet 1, an air cooling system and a liquid cooling system; a heat exchanger 2 is provided between the air cooling system and the liquid cooling system;

[0067] The liquid cooling system includes a second main water tank 81, a second wet film 82 and an auxiliary water tank 83; the second main water tank 81 is connected to one end of the CDU cabinet 1; the liquid in the second main water tank 81 passes through the second wet film 82 under the action of gravity and enters the auxiliary water tank 83; the auxiliary water tank 83 passes through the heat exchanger 2 and is connected to the other end of the CDU cabinet 1. Specifically, different from Example 1, in this embodiment, the return liquid of the CDU cabinet 1 enters the second main water tank 81, the water in the second main water tank 81 flows through the second wet film 82 and then flows to the auxiliary water tank 83, the water in the auxiliary water tank 83 that is initially cooled by the second wet film 82 flows through the heat exchanger 2 for further cooling, and finally is sent to the CDU cabinet 1.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A wind-liquid fusion system, characterized in that: It includes a CDU cabinet, an air cooling system and a liquid cooling system; a heat exchanger is provided between the air cooling system and the liquid cooling system; The liquid cooling system includes a first main water tank, a spray pipe, a first wet film and a first water receiving tray; one end of the CDU cabinet is connected to the spray pipe; the liquid sprayed from the spray pipe passes through the first wet film and enters the first water receiving tray; the first water receiving tray is connected to the first main water tank; the first main water tank is connected to the other end of the CDU cabinet after passing through a heat exchanger.

2. The air-liquid fusion system according to claim 1, characterized in that: The heat exchanger is provided with a first channel and a second channel; the first main water tank is connected with the other end of the CDU cabinet through the first channel.

3. The air-liquid fusion system according to claim 2, characterized in that: The air cooling system comprises a first air cooling system; the first air cooling system comprises a first compressor, a first condenser, a first evaporator, a first electronic expansion valve and a second electronic expansion valve; One end of the first compressor is connected to the first condenser; the other end of the first condenser is connected to one end of the first electronic expansion valve; the other end of the first electronic expansion valve is connected to the other end of the first compressor through the first evaporator; the other end of the first condenser is connected to one end of the second electronic expansion valve; the other end of the second electronic expansion valve is connected to the other end of the first compressor through the second channel.

4. The air-liquid fusion system according to claim 3, characterized in that: The first air cooling system further includes a first fluorine pump; the first fluorine pump is arranged between the other end of the first condenser and one end of the first electronic expansion valve and between the other end of the first condenser and one end of the second electronic expansion valve; The first compressor is provided with a first one-way valve; the first fluorine pump is provided with a second one-way valve.

5. The wind-liquid fusion system according to claim 3, characterized in that: The heat exchanger further includes a third channel; The air cooling system further comprises a second air cooling system; the second air cooling system comprises a second compressor, a second condenser, a second evaporator, a third electronic expansion valve and a fourth electronic expansion valve; One end of the second compressor is connected to the second condenser; the other end of the second condenser is connected to one end of the third electronic expansion valve; the other end of the third electronic expansion valve is connected to the other end of the second compressor through the second evaporator; the other end of the second condenser is connected to one end of the fourth electronic expansion valve; the other end of the fourth electronic expansion valve is connected to the other end of the second compressor through the third channel.

6. The air-liquid fusion system according to claim 5, characterized in that: The second air cooling system further includes a second fluorine pump; the second fluorine pump is arranged between the other end of the second condenser and one end of the third electronic expansion valve and between the other end of the second condenser and one end of the fourth electronic expansion valve; The second compressor is provided with a third one-way valve; the second fluorine pump is provided with a fourth one-way valve.

7. The air-liquid fusion system according to claim 4, characterized in that: A first liquid storage tank is provided between the other end of the first condenser and the first fluorine pump.

8. The air-liquid fusion system according to claim 6, characterized in that: A second liquid storage tank is provided between the other end of the second condenser and the second fluorine pump.

9. The wind-liquid fusion system according to claim 5, characterized in that: A second water receiving pan is provided at the first evaporator and the second evaporator; the second water receiving pan is connected to the first main water tank; an evaporating fan is provided at the first evaporator and the second evaporator; a condensing fan is provided at the first condenser and the second condenser; the evaporating fan is arranged at the first wet film.

10. A wind-liquid fusion system, characterized in that: It includes a CDU cabinet, an air cooling system and a liquid cooling system; a heat exchanger is provided between the air cooling system and the liquid cooling system; The liquid cooling system includes a second main water tank, a second wet membrane and an auxiliary water tank; the second main water tank is connected to one end of the CDU cabinet; the liquid in the second main water tank passes through the second wet membrane and enters the auxiliary water tank; the auxiliary water tank is connected to the other end of the CDU cabinet after passing through a heat exchanger.

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