Air-liquid integrated air conditioning cabinet

Abstract

The invention discloses an air-liquid integrated air conditioning cabinet, which relates to the technical field of cooling devices and comprises an air cooling module and a liquid cooling module. The air cooling module comprises a mechanical refrigeration unit and a natural cold source heat dissipation unit which are connected with each other, and the natural cold source heat dissipation unit is connected with the liquid cooling module; the natural cold source heat dissipation unit comprises two installation pipelines, one ends of the two installation pipelines are connected with an air cooling subunit, the other ends of the two installation pipelines are connected with a liquid inlet pipe and a liquid outlet pipe respectively, and the mechanical refrigeration unit comprises a first plate type heat exchanger. According to the technical scheme, an air cooling system and a liquid cooling system can be integrated, the position of an inter-row air conditioner is replaced, liquid cooling is added, in addition, a natural cold source is added to the air cooling part, the integrated equipment is beneficial to layout and placement of the data center, compared with an existing pure refrigeration air system, the natural cold source part is added, and the effect is good. And equivalently, the power consumption is saved.

Description

Technical Field

[0001] The invention relates to the technical field of cooling devices, and in particular to an air-liquid integrated air-conditioning cabinet. Background Art

[0002] The heat dissipation problem of data centers has always been the focus of the refrigeration / cooling industry. Among the annual power consumption of data centers, the power used for cooling / refrigeration is about 1 / 3 of the total power consumption. At present, the country vigorously advocates energy conservation, and the cooling mode and system of data centers are also updated accordingly; data centers can be said to be "every inch of land is valuable", and the most mainstream method is to cool the data center computer room through an air cooling system assisted by a liquid cooling system and mechanical refrigeration. In this regard, it can be considered that two systems cool a data center at the same time, but the larger the volume occupied by the cooling system, the fewer servers it can accommodate, and the greater the power consumption. For this reason, the present application discloses an integrated air-liquid air-conditioning cabinet to meet people's needs.

[0003] For most newly built data centers, the demand for liquid-cooled servers is not clear, and it is difficult to match the corresponding cooling equipment / system. To solve this problem, the present invention discloses a device that is highly compatible with the flexible deployment requirements of air-cooled servers and liquid-cooled servers. For existing data centers, as the PUE requirements of the state and local governments are more stringent than before, the PUE index requirements cannot be met. The present invention can realize energy-saving transformation of existing data centers and replace traditional precision air-conditioning equipment, so as to simultaneously meet the needs of air-cooled and liquid-cooled servers and meet the PUE index requirements of the state and local governments for data centers. Summary of the invention

[0004] The purpose of the present application is to provide an integrated air-liquid air-conditioning cabinet to solve the problems raised in the above background technology, such as the inability to flexibly deploy air-cooled and liquid-cooled servers, the large space occupied by cooling equipment, and the high PUE.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an air-liquid integrated air-conditioning cabinet, comprising an air-cooling module and a liquid-cooling module;

[0006] The air cooling module comprises a mechanical refrigeration unit and a natural cold source heat dissipation unit connected to each other, and the natural cold source heat dissipation unit is connected to the liquid cooling module;

[0007] The natural cooling source heat dissipation unit comprises two installation pipes, one end of the two installation pipes is connected to the air cooling sub-unit, and the other end of the two installation pipes is respectively connected to the liquid inlet pipe and the liquid outlet pipe;

[0008] The mechanical refrigeration unit comprises a first plate heat exchanger, a first liquid inlet and a first liquid outlet of the first plate heat exchanger are both connected to a first pipe, one end of the two first pipes away from the first plate heat exchanger is connected to the air cooling subunit, a second liquid inlet and a second liquid outlet of the first plate heat exchanger are both connected to a second pipe, and one end of the two second pipes away from the first plate heat exchanger is respectively connected to the two mounting pipes;

[0009] The liquid cooling module includes a second plate heat exchanger, two third pipes and two fourth pipes, one end of the two fourth pipes away from the second plate heat exchanger is respectively connected to the liquid inlet pipe and the liquid outlet pipe, the other end of the two fourth pipes is respectively connected to the first liquid inlet and the first liquid outlet of the second plate heat exchanger, one end of the two third pipes is respectively connected to the second liquid outlet and the second liquid inlet of the second plate heat exchanger, and one end of the two third pipes away from the second plate heat exchanger is connected to the terminal cabinet, one of the third pipes is provided with a round pipe and two parallel circulating water pumps, a water tank is provided on one side of the second plate heat exchanger, the water tank is connected to the round pipe through a connecting pipe, a diaphragm pump is provided on the mounting pipe, and the round pipe is connected with an expansion tank, a pH sensor, a conductivity sensor and a turbidity sensor;

[0010] The air-cooling subunit includes two half-tubes, which are pressed together to form a dual-channel pipeline and then processed to form a fin-tube heat exchanger. One end of the two half-tubes is respectively connected to the end of one of the first pipes and one of the installation pipes, and the other ends of the two half-tubes are respectively connected to the end of another first pipe and another installation pipe.

[0011] Preferably, the air cooling subunit also includes a primary filter, a fan, a first temperature sensor and a temperature and humidity sensor, the temperature and humidity sensor and the first temperature sensor are respectively located on both sides of the fin-tube heat exchanger, the fan and the primary filter are located on both sides of the fin-tube heat exchanger, the primary filter and the temperature and humidity sensor are located on the same side, the primary filter and the temperature and humidity sensor are located on the air inlet side of the fan, and the positions of the fan, the primary filter and the fin-tube heat exchanger correspond.

[0012] Preferably, one of the first pipelines is provided with an oil separator and a gas-liquid separator, and the other first pipeline is provided with a liquid reservoir, a drying filter, a sight glass and an electronic expansion valve.

[0013] Preferably, a first valve is installed on one of the installation pipes, and the first valve is located on the side of the fin-tube heat exchanger near the connection between the second pipe and the installation pipe, and a second valve is installed on one of the second pipes.

[0014] Preferably, a fifth pipeline is installed between the two third pipelines, and a first electric regulating valve is provided on the fifth pipeline.

[0015] Preferably, the two third pipelines, the two fourth pipelines and the first pipeline on which the gas-liquid separator is installed are all provided with a second temperature sensor and a pressure sensor.

[0016] Preferably, two second electric regulating valves are connected to the fourth pipeline, and the two second electric regulating valves are respectively located on both sides of the liquid inlet pipe.

[0017] Preferably, a safety valve is connected to the first pipeline on which the gas-liquid separator is installed, and the safety valve is located between the oil separator and the first plate heat exchanger.

[0018] Preferably, a compressor, two needle valves and two pressure switches are connected to the first pipeline on which the gas-liquid separator is installed, the two pressure switches are located on both sides of the compressor, and the two needle valves are located on the side away from the oil separator and the gas-liquid separator.

[0019] In summary, the technical effects and advantages of the present invention are as follows:

[0020] The technical solution of the present invention can integrate air cooling and liquid cooling systems into one, solving the problems of air cooling and liquid cooling servers being unable to be flexibly deployed, cooling equipment occupying large space, and high PUE. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is an internal module diagram of the air-liquid integrated air-conditioning cabinet according to an embodiment of the present application;

[0023] Figure 2 This is a schematic diagram of the structure of the mechanical refrigeration system and the natural cooling source system of the embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of the pipeline deformation and merging according to an embodiment of the present application.

[0025] In the figure: 1. first plate heat exchanger; 2. fourth pipeline; 3. second plate heat exchanger; 4. second electric regulating valve; 5. half pipe; 6. fin tube heat exchanger; 7. fan; 8. second pipeline; 9. first pipeline; 10. oil separator; 11. gas-liquid separator; 12. liquid storage tank; 13. third pipeline; 14. circulating water pump; 15. first electric regulating valve; 16. round pipe; 17. diaphragm pump; 18. water tank; 19. fifth pipeline; 20. drying filter; 21. second temperature sensor; 22. pressure sensor; 23. installation pipeline; 24. liquid inlet pipe; 25. liquid outlet pipe; 26. first valve; 27. second valve; 28. compressor. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example: Reference Figure 1-Figure 3 An air-liquid integrated air conditioning cabinet shown includes an air cooling module and a liquid cooling module;

[0028] The air cooling module includes a mechanical refrigeration unit and a natural cold source heat dissipation unit connected to each other, and the natural cold source heat dissipation unit is connected to the liquid cooling module;

[0029] The natural cooling source heat dissipation unit includes two installation pipes 23, one end of the two installation pipes 23 is connected to the air cooling subunit, and the other end of the two installation pipes 23 is respectively connected to the liquid inlet pipe 24 and the liquid outlet pipe 25, one end of the liquid inlet pipe 24 and the liquid outlet pipe 25 are respectively connected to the external cooling tower or dry cooler for conveying water for natural cooling;

[0030] The mechanical refrigeration unit comprises a first plate heat exchanger 1, a first liquid inlet and a first liquid outlet of the first plate heat exchanger 1 are both connected to a first pipe 9, one end of the two first pipes 9 away from the first plate heat exchanger 1 is connected to the air cooling subunit, a second liquid inlet and a second liquid outlet of the first plate heat exchanger 1 are both connected to a second pipe 8, and one end of the two second pipes 8 away from the first plate heat exchanger 1 is respectively connected to two mounting pipes 23;

[0031] The liquid cooling module includes a second plate heat exchanger 3, two third pipes 13 and two fourth pipes 2, one end of the two fourth pipes 2 away from the second plate heat exchanger 3 is respectively connected to the liquid inlet pipe 24 and the liquid outlet pipe 25, the other ends of the two fourth pipes 2 are respectively connected to the first liquid inlet and the first liquid outlet of the second plate heat exchanger 3, one end of the two third pipes 13 is respectively connected to the second liquid outlet and the second liquid inlet of the second plate heat exchanger 3, one end of the two third pipes 13 away from the second plate heat exchanger 3 is connected to the terminal cabinet, one of the third pipes 13 is provided with a circular pipe 16 and two parallel circulating water pumps 14, a water tank 18 is provided on one side of the second plate heat exchanger 3, the water tank 18 is connected to the circular pipe 16 through a connecting pipe, a diaphragm pump 17 is provided on the mounting pipe, and the circular pipe 16 is connected to an expansion tank, a pH sensor, a conductivity sensor and a turbidity sensor;

[0032] The air-cooling subunit includes two half-tubes 5, which are pressed together to form a dual-channel pipeline and then processed to form a fin-tube heat exchanger 6. One end of the two half-tubes 5 is respectively connected to the end of one of the first pipes 9 and one of the installation pipes 23, and the other ends of the two half-tubes 5 are respectively connected to the end of another first pipe 9 and another installation pipe 23.

[0033] By means of the above structure: when the ambient temperature is low and the medium temperature provided by the natural cold source heat dissipation unit is low, the mechanical refrigeration unit does not work, and the natural cold source is used to achieve the set air supply temperature; when the medium temperature provided by the natural cold source heat dissipation unit rises to a certain value, the compressor of the mechanical refrigeration unit operates at a low frequency, and the mechanical refrigeration and natural cold source are used to jointly achieve the set air supply temperature; when the medium temperature provided by the primary side is high, the mechanical refrigeration unit increases the compressor frequency and is assisted by a certain natural cold source to jointly achieve the set air supply temperature; when the natural cold source cannot be involved, the set air supply temperature is partially achieved by frequency conversion control of the mechanical refrigeration unit.

[0034] like Figure 2 As shown, the air cooling subunit also includes a primary filter, a fan 7, a first temperature sensor and a temperature and humidity sensor. The temperature and humidity sensor and the first temperature sensor are respectively located on both sides of the fin-tube heat exchanger 6. The fan 7 and the primary filter are located on both sides of the fin-tube heat exchanger 6. The primary filter and the temperature and humidity sensor are located on the same side. The primary filter and the temperature and humidity sensor are located on the air inlet side of the fan 7. The positions of the fan 7, the primary filter and the fin-tube heat exchanger 6 correspond. By setting the fan 7 and the fin-tube heat exchanger 6, cold air can be blown to the terminal data cabinet, thereby realizing air cooling. A temperature and humidity sensor is set on the return air side, i.e. before the primary filter, and a first temperature sensor is set on the air outlet.

[0035] like Figure 2As shown, one of the first pipelines 9 is provided with an oil separator 10 and a gas-liquid separator 11, and the other first pipeline 9 is provided with a liquid storage tank 12, a drying filter 20, a sight glass and an electronic expansion valve.

[0036] like Figure 2 As shown, a first valve 26 is installed on one of the installation pipes 23, and the first valve 26 is located on the side of the connection between the second pipe 8 and the installation pipe 23 near the fin tube heat exchanger 6, and a second valve 27 is installed on one of the second pipes 8. Through the setting of the second valve 27, it is possible to control whether the first plate heat exchanger 1 is to be heat exchanged, and through the setting of the first valve 26, it is possible to control whether a natural cold source is used for cooling; the first valve 26 and the second valve 27 are also electric regulating valves, which can be turned off and adjusted. The mechanical refrigeration unit and the natural cold source unit of the air cooling module are independently controlled by this valve, and one of the units can be used alone, or both can be opened to distribute the water volume in proportion through the two valves.

[0037] like Figure 2 As shown, a fifth pipeline 19 is installed between the two third pipelines 13, and a first electric regulating valve 15 is arranged on the fifth pipeline 19. The first electric regulating valve 15 is used as a bypass. When the water pump is running at the lowest frequency, the heat dissipation load of the terminal cabinet is still lower than the lowest frequency water pump operating condition, the opening of this valve is adjusted according to the control to bypass part of the water volume to adapt to the terminal load.

[0038] like Figure 2 The two third pipelines 13, the two fourth pipelines 2 and the first pipeline 9 equipped with the gas-liquid separator 11 are all provided with a second temperature sensor 21 and a pressure sensor 22. The second temperature sensor 21 can detect the temperature.

[0039] like Figure 2 As shown, two second electric regulating valves 4 are connected to the fourth pipeline 2, and the two second electric regulating valves 4 are respectively located on both sides of the liquid inlet pipe 24. The low-temperature water for natural cooling is proportionally distributed through the second electric regulating valve 4, and is distributed to the liquid cooling side and the mechanical refrigeration unit according to the water demand ratio of the design working condition. The second electric regulating valve 4 can be turned off and adjusted. The independent control of the air cooling module and the liquid cooling module is determined by this valve. One of the modules can be used alone or both can be turned on and the water volume can be proportionally distributed through the second electric regulating valve 4.

[0040] like Figure 2 As shown, a safety valve is connected to the first pipeline 9 on which the gas-liquid separator 11 is installed, and the safety valve is located between the oil separator 10 and the first plate heat exchanger 1 .

[0041] like Figure 2As shown, the first pipeline 9 equipped with the gas-liquid separator 11 is connected with a compressor 28, two needle valves and two pressure switches, the two pressure switches are located on both sides of the compressor 28, and the two needle valves are located on the side away from the oil separator 10 and the gas-liquid separator 11. The arrangement of the compressor 28 facilitates heat exchange of the first plate heat exchanger 1.

[0042] Working principle of the present invention:

[0043] When the ambient temperature is low and the medium temperature provided by the natural cold source heat dissipation unit is low, the mechanical refrigeration unit does not work, and the natural cold source is used to achieve the set air supply temperature; when the medium temperature provided by the natural cold source heat dissipation unit rises to a certain value, the compressor of the mechanical refrigeration unit operates at a low frequency, and the mechanical refrigeration and natural cold source are used to jointly achieve the set air supply temperature; when the medium temperature provided by the primary side is high, the mechanical refrigeration unit increases the compressor frequency and is assisted by a certain natural cold source to jointly achieve the set air supply temperature; when the natural cold source cannot be involved, the mechanical refrigeration unit is partially controlled by frequency conversion to achieve the set air supply temperature. When in use, through the setting of the third pipe 13, when the liquid flows, it can absorb the heat of the terminal cabinet, and the two fourth pipes 2 and the second plate heat exchanger 3 can drive the heat of the third pipe 13, so as to perform liquid cooling and heat dissipation on the terminal cabinet, so that it can be naturally cooled in cooperation with the air cooling module to save energy.

[0044] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated air-liquid air conditioning cabinet, characterized in that: Including air cooling module and liquid cooling module; The air cooling module comprises a mechanical refrigeration unit and a natural cold source heat dissipation unit connected to each other, and the natural cold source heat dissipation unit is connected to the liquid cooling module; The natural cooling source heat dissipation unit comprises two installation pipes (23), one end of the two installation pipes (23) is connected to an air cooling sub-unit, and the other end of the two installation pipes (23) is respectively connected to a liquid inlet pipe (24) and a liquid outlet pipe (25); The mechanical refrigeration unit comprises a first plate heat exchanger (1), a first liquid inlet and a first liquid outlet of the first plate heat exchanger (1) are both connected to a first pipe (9), one end of the two first pipes (9) away from the first plate heat exchanger (1) is connected to the air cooling sub-unit, a second liquid inlet and a second liquid outlet of the first plate heat exchanger (1) are both connected to a second pipe (8), and one end of the two second pipes (8) away from the first plate heat exchanger (1) is respectively connected to the two mounting pipes (23); The liquid cooling module comprises a second plate heat exchanger (3), two third pipes (13) and two fourth pipes (2), one end of the two fourth pipes (2) away from the second plate heat exchanger (3) is respectively connected to the liquid inlet pipe (24) and the liquid outlet pipe (25), the other ends of the two fourth pipes (2) are respectively connected to the first liquid inlet and the first liquid outlet of the second plate heat exchanger (3), one end of the two third pipes (13) is respectively connected to the second liquid outlet and the second liquid outlet of the second plate heat exchanger (3), On the liquid inlet, one end of the two third pipes (13) away from the second plate heat exchanger (3) is connected to the terminal cabinet, one of the third pipes (13) is provided with a round pipe (16) and two parallel circulating water pumps (14), one side of the second plate heat exchanger (3) is provided with a water tank (18), the water tank (18) is connected to the round pipe (16) through a connecting pipe, a diaphragm pump (17) is provided on the mounting pipe, and the round pipe (16) is connected to an expansion tank, a pH sensor, a conductivity sensor and a turbidity sensor; The air-cooling subunit comprises two half-tubes (5), the two half-tubes (5) are pressed together to form a double-channel pipeline, and then processed to form a fin-tube heat exchanger (6), one end of the two half-tubes (5) is respectively connected to the end of one of the first pipelines (9) and one of the installation pipelines (23), and the other ends of the two half-tubes (5) are respectively connected to the end of another first pipeline (9) and another installation pipeline (23).

2. The air-liquid integrated air conditioning cabinet according to claim 1, characterized in that: The air-cooling subunit further comprises a primary filter, a fan (7), a first temperature sensor and a temperature and humidity sensor; the temperature and humidity sensor and the first temperature sensor are respectively located on both sides of the fin-tube heat exchanger (6); the fan (7) and the primary filter are located on both sides of the fin-tube heat exchanger (6); the primary filter and the temperature and humidity sensor are located on the same side; the primary filter and the temperature and humidity sensor are located on the air inlet side of the fan (7); the fan (7), the primary filter and the fin-tube heat exchanger (6) correspond in position.

3. The air-liquid integrated air conditioning cabinet according to claim 1, characterized in that: An oil separator (10) and a gas-liquid separator (11) are arranged on one of the first pipelines (9), and a liquid storage container (12), a drying filter (20), a sight glass and an electronic expansion valve are arranged on the other first pipeline (9).

4. The air-liquid integrated air conditioning cabinet according to claim 3, characterized in that: A first valve (26) is installed on one of the installation pipes (23), and the first valve (26) is located on the side of the connection between the second pipe (8) and the installation pipe (23) close to the fin-tube heat exchanger (6), and a second valve (27) is installed on one of the second pipes (8).

5. The air-liquid integrated air conditioning cabinet according to claim 1, characterized in that: A fifth pipeline (19) is installed between the two third pipelines (13), and a first electric regulating valve (15) is arranged on the fifth pipeline (19).

6. The air-liquid integrated air conditioning cabinet according to claim 3, characterized in that: A second temperature sensor (21) and a pressure sensor (22) are provided on the two third pipelines (13), the two fourth pipelines (2) and the first pipeline (9) on which the gas-liquid separator (11) is installed.

7. The air-liquid integrated air conditioning cabinet according to claim 1, characterized in that: The fourth pipeline (2) is connected to two second electric regulating valves (4), and the two second electric regulating valves (4) are respectively located on both sides of the liquid inlet pipe (24).

8. The air-liquid integrated air conditioning cabinet according to claim 3, characterized in that: The first pipeline (9) on which the gas-liquid separator (11) is installed is connected to a safety valve, and the safety valve is located between the oil separator (10) and the first plate heat exchanger (1).

9. The air-liquid integrated air conditioning cabinet according to claim 3, characterized in that: The first pipeline (9) on which the gas-liquid separator (11) is installed is connected to a compressor (28), two needle valves and two pressure switches, the two pressure switches are located on both sides of the compressor (28), and the two needle valves are located on a side away from the oil separator (10) and the gas-liquid separator (11).

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