CN214619902U

CN214619902U - Air conditioning system

Info

Publication number: CN214619902U
Application number: CN202120805861.2U
Authority: CN
Inventors: 周通
Original assignee: Zhejiang Dunan Artificial Environment Co Ltd
Current assignee: Zhejiang Dunan Artificial Environment Co Ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-11-05
Anticipated expiration: 2031-04-19

Abstract

The utility model provides an air conditioning system. The air conditioning system includes: the first refrigeration loop comprises a compressor, a first condenser and a heat exchanger, wherein the first condenser is connected with the compressor, and the heat exchanger is connected with the compressor; the second refrigeration loop comprises a first evaporator and a first pipeline, and the first evaporator is connected with the heat exchanger through the first pipeline; the third refrigeration loop comprises a second condenser, a second evaporator and a second pipeline, and the second evaporator is connected with the second condenser through the second pipeline; the emergency module comprises a third pipeline and a control structure arranged on the third pipeline; the emergency module is arranged on the first pipeline, and when the control structure is in an open state, the refrigerant is discharged through the third pipeline; and/or the emergency module is arranged on the second pipeline, and when the control structure is in an opening state, the refrigerant flows out through the third pipeline. The utility model provides an among the prior art air conditioning system shut down in the short time and lead to the unable problem of normal work of data center.

Description

Air conditioning system

Technical Field

The utility model relates to a data center computer lab refrigeration technology field particularly, relates to an air conditioning system.

Background

In the prior art, a data center machine room is a special place which needs to provide refrigeration conditions throughout the year, if an air conditioning system of the machine room is shut down for a short time due to objective reasons (such as sudden power failure), local high temperature of the short time easily occurs in the whole data center machine room, especially for a data machine room with large heat flux density, the temperature can rise fast, related equipment is easily stopped due to overhigh temperature rise, and even the equipment is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides an air conditioning system to solve among the prior art because shut down in the air conditioning system short time and lead to the unable normal work of data center to cause the problem of equipment damage even.

In order to achieve the above object, the present invention provides an air conditioning system, including: the first refrigeration loop comprises a compressor, a first condenser and a heat exchanger, wherein the first condenser is connected with an exhaust port of the compressor, and the heat exchanger is connected with an air suction port of the compressor; the second refrigeration loop is positioned indoors and comprises a first evaporator and a first pipeline, and one end of the first evaporator is connected with the heat exchanger through the first pipeline; the third refrigeration loop comprises a second condenser, a second evaporator and a second pipeline, the second condenser is located outdoors, the second evaporator is located indoors, and one end of the second evaporator is connected with the second condenser through the second pipeline; the emergency module comprises a third pipeline and a control structure arranged on the third pipeline; the emergency module is arranged on the first pipeline, and when the control structure is in an open state, the refrigerant is discharged through the third pipeline so as to reduce the pressure of the refrigerant in the second refrigeration loop; and/or the emergency module is arranged on the second pipeline, and when the control structure is in an opening state, the refrigerant flows out through the third pipeline so as to reduce the pressure of the refrigerant in the third refrigeration circuit.

Use the technical scheme of the utility model, when the power supply system of air conditioning system broke down, because the compressor can't start and lead to the unable normal operating of first refrigeration circuit. At the moment, the working personnel can open the control structure of the emergency module so that the refrigerant enters the third pipeline through the first pipeline and is discharged from the third pipeline; and/or, to allow refrigerant to enter the third line through the second line and to exit the third line. Therefore, when the amount of the refrigerant in the second refrigeration circuit and/or the third refrigeration circuit is reduced, the pressure of the refrigerant in the refrigeration circuit is reduced, the evaporation temperature and the boiling point of the refrigerant are reduced, so that the refrigerant can be rapidly evaporated in the first evaporator and/or the second evaporator, and the refrigerant is used for cooling the data center machine room, and the problem that the data center cannot normally work or even equipment is damaged due to the fact that an air conditioning system is shut down within a short time in the prior art is solved, uninterrupted refrigeration of the data center machine room by the air conditioning system is achieved, and the data center can normally work is guaranteed.

Further, the emergency module further comprises: and the buffer structure is connected with the third pipeline and is used for storing the refrigerant discharged from the third pipeline. The refrigerant discharged from the third pipeline can be buffered in the buffer structure, and the waste of the refrigerant caused by the fact that the refrigerant flows out of the air conditioning system is further avoided. Meanwhile, the refrigerant cached in the cache structure can enter the second refrigeration loop and the third refrigeration loop again, so that the aim of refrigerating the data center machine room by the air conditioning system is fulfilled.

Furthermore, a plurality of emergency modules are provided, and the plurality of emergency modules comprise a first emergency module and a second emergency module, wherein the first emergency module is arranged on the first pipeline, and the second emergency module is arranged on the second pipeline; the air conditioning system comprises a battery module, and the battery module is connected with the first emergency module and the second emergency module. The emergency module is two, and two emergency modules include first emergency module and second emergency module, and first emergency module sets up in the second refrigeration circuit, and the setting of second emergency module is in the third refrigeration circuit, and the first emergency module of staff's accessible and second emergency module carry out emergency treatment to second refrigeration circuit and third refrigeration circuit respectively to satisfy different user demand and operating mode. Meanwhile, the battery module is used for supplying power to the first emergency module and the second emergency module so as to ensure that the first emergency module and the second emergency module can be normally used, and the operational reliability of the emergency module is improved.

Further, the control structure is a control valve, and the first emergency module further comprises: one end of the fourth pipeline is communicated with the first pipeline, and the other end of the fourth pipeline is communicated with the cache structure of the first emergency module; and the first pump body is arranged on the fourth pipeline so as to pump the refrigerant in the first pipeline into the cache structure. The refrigerant in the second refrigeration loop can enter the cache structure through the third pipeline through the control valve, and can enter the cache structure through the fourth pipeline under the pumping of the first pump body, so that the pressure of the refrigerant in the second refrigeration loop is quickly reduced, and the refrigeration efficiency of the air conditioning system is improved.

Further, the buffer memory structure of the first emergency module is provided with a first inlet and a first outlet, the third pipeline and/or the fourth pipeline are communicated with the first inlet, and the first emergency module further comprises: one end of the fifth pipeline is communicated with the first pipeline, and the other end of the fifth pipeline is communicated with the first outlet; and the second pump body is arranged on the fifth pipeline so as to pump the refrigerant entering the first outlet into the first pipeline. The first pump body is used for pumping the refrigerant in the first pipeline to the cache structure, the second pump body is used for pumping the refrigerant in the cache structure back to the first pipeline through the fifth pipeline, and when the power supply system of the air conditioning system recovers to be normal, the arrangement ensures that the second refrigeration loop is internally provided with sufficient refrigerant, so that the refrigeration reliability of the air conditioning system is improved.

Further, the control structure is a control valve, and the second emergency module further comprises: one end of the sixth pipeline is communicated with the second pipeline, and the other end of the sixth pipeline is communicated with the cache structure of the second emergency module; and the third pump body is arranged on the sixth pipeline so as to pump the refrigerant in the first pipeline into the cache structure. The refrigerant in the third refrigeration loop can enter the cache structure through the third pipeline through the control valve, and can also enter the cache structure through the sixth pipeline under the pumping of the third pump body, so that the pressure of the refrigerant in the third refrigeration loop is quickly reduced, and the refrigeration efficiency of the air conditioning system is improved.

Further, the buffer memory structure of the second emergency module is provided with a second inlet and a second outlet, the third pipeline and/or the sixth pipeline are communicated with the second inlet, and the second emergency module further comprises: one end of the seventh pipeline is communicated with the second pipeline, and the other end of the seventh pipeline is communicated with the second outlet; and the fourth pump body is arranged on the seventh pipeline and used for pumping the refrigerant entering the second outlet into the second pipeline. The third pump body is used for pumping the refrigerant in the second pipeline to the cache structure, the fourth pump body is used for pumping the refrigerant in the cache structure back to the second pipeline through the seventh pipeline, and when the power supply system of the air conditioning system returns to normal, the arrangement ensures that the third refrigeration loop has sufficient refrigerant, so that the refrigeration reliability of the air conditioning system is improved.

Further, the second refrigeration circuit further includes: the other end of the first evaporator is connected with the heat exchanger through an eighth pipeline; the first liquid storage device is arranged on the first pipeline; the height of the heat exchanger is higher than that of the first liquid storage device; the first emergency module is in communication with the first reservoir. On one hand, the arrangement improves the flow stability of the refrigerant in the second refrigeration loop, and ensures that the second refrigeration loop can play a refrigeration role in the data center machine room; on the other hand, the refrigerant in the second refrigeration loop can flow under the action of self weight, power equipment is not needed, and the energy consumption of the air conditioning system is further reduced.

Further, the first evaporator is one, and the first liquid storage device is arranged at a higher height than the first evaporator; or the first evaporators are arranged at intervals along the height direction and/or the length direction of the air conditioning system, and the height of the first liquid storage device is higher than that of the first evaporator at the highest position in the plurality of first evaporators. The number and the arrangement positions of the first evaporators are more flexible due to the arrangement, so that different use requirements and working conditions are met.

Further, the third refrigeration circuit further includes: the other end of the second evaporator is connected with the second condenser through a ninth pipeline; the second liquid storage device is arranged on the second pipeline; the second condenser is higher than the second liquid storage device; the second emergency module is communicated with the second liquid storage device. On one hand, the arrangement improves the flow stability of the refrigerant in the third refrigeration loop, and ensures that the third refrigeration loop can play a refrigeration role in the data center machine room; on the other hand, the refrigerant in the third refrigeration loop can flow under the action of self weight, power equipment is not needed, and the energy consumption of the air conditioning system is further reduced.

Furthermore, the second evaporator is one, and the second liquid storage device is arranged at a higher height than the second evaporator; or the second evaporators are multiple, the multiple second evaporators are arranged at intervals along the height direction and/or the length direction of the air conditioning system, and the height of the second liquid storage device is higher than that of the second evaporator at the highest position in the multiple second evaporators. The number and the arrangement positions of the second evaporators are more flexible due to the arrangement, so that different use requirements and working conditions are met.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of an air conditioning system according to the present invention;

FIG. 2 illustrates a schematic diagram of a first emergency module of the air conditioning system of FIG. 1; and

fig. 3 shows a schematic representation of the structure of a second emergency module of the air conditioning system of fig. 1.

Wherein the figures include the following reference numerals:

10. a first refrigeration circuit; 11. a compressor; 12. a first condenser; 13. a heat exchanger; 14. a third reservoir; 15. a throttling device; 20. a second refrigeration circuit; 21. a first evaporator; 22. a first pipeline; 23. an eighth pipeline; 24. a first reservoir; 30. a third refrigeration circuit; 31. a second condenser; 32. a second evaporator; 33. a second pipeline; 34. a ninth conduit; 35. a second reservoir; 40. an emergency module; 41. a third pipeline; 42. a control structure; 43. a cache structure; 44. a first emergency module; 441. a fourth pipeline; 442. a first pump body; 443. a fifth pipeline; 444. a second pump body; 45. a second emergency module; 451. a sixth pipeline; 452. a third pump body; 453. a seventh pipeline; 454. and a fourth pump body.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless otherwise specified, the use of directional words such as "upper and lower" is generally in reference to the orientation shown in the drawings, or to the vertical, perpendicular or gravitational orientation; likewise, for ease of understanding and description, "left and right" are generally to the left and right as shown in the drawings; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself, but the above directional terms are not intended to limit the present invention.

In order to solve the problem that the data center cannot normally work or even causes equipment damage due to the fact that the air conditioning system stops in a short time in the prior art, the application provides an air conditioning system.

As shown in fig. 1 to 3, the air conditioning system includes a first refrigeration circuit 10, a second refrigeration circuit 20, a third refrigeration circuit 30, and an emergency module 40. The first refrigeration circuit 10 includes a compressor 11, a first condenser 12, and a heat exchanger 13, the first condenser 12 is connected to an exhaust port of the compressor 11, and the heat exchanger 13 is connected to an intake port of the compressor 11. The second refrigeration circuit 20 is located indoors, the second refrigeration circuit 20 includes a first evaporator 21 and a first pipe 22, and one end of the first evaporator 21 is connected to the heat exchanger 13 through the first pipe 22. The third refrigeration circuit 30 includes a second condenser 31, a second evaporator 32, and a second pipe 33, the second condenser 31 is located outdoors, the second evaporator 32 is located indoors, and one end of the second evaporator 32 is connected to the second condenser 31 through the second pipe 33. The emergency module 40 comprises a third line 41 and a control structure 42 arranged on the third line 41. Wherein the emergency module 40 is arranged on the first line 22, when the control structure 42 is in the open state, the refrigerant is discharged through the third line 41 to reduce the pressure of the refrigerant in the second refrigeration circuit 20. Also, the emergency module 40 is also arranged on the second line 33, and when the control structure 42 is in the open state, the refrigerant flows out through the third line 41 to reduce the pressure of the refrigerant in the third refrigeration circuit 30.

Use the technical scheme of the utility model, when the power supply system of air conditioning system broke down, because the compressor 11 can't start and lead to the unable normal operating of first refrigeration circuit 10. At this point, the operator may open the control structure 42 of the emergency module 40 to allow refrigerant to enter the third line 41 through the first line 22 and to be discharged from the third line 41, while refrigerant is also allowed to enter the third line 41 through the second line 33 and to be discharged from the third line 41. Thus, when the amount of the refrigerant in the second refrigeration circuit 20 and the third refrigeration circuit 30 is reduced, the pressure of the refrigerant in the refrigeration circuits is reduced, and further the evaporation temperature and the boiling point of the refrigerant are reduced, so that the refrigerant can be rapidly evaporated in the first evaporator 21 and the second evaporator 32, and the refrigerant is used for cooling the data center machine room, and further the problem that the data center cannot normally work or even equipment is damaged due to the fact that the air conditioning system is shut down in a short time in the prior art is solved, uninterrupted refrigeration of the data center machine room by the air conditioning system is realized, and the data center can normally work is ensured.

In this embodiment, the emergency module is disposed on the second refrigeration circuit 20 and the third refrigeration circuit 30, and the second refrigeration circuit 20 and the third refrigeration circuit 30 can refrigerate the data center machine room at the same time, so as to improve the refrigeration efficiency of the air conditioning system. It should be noted that the installation position of the emergency module is not limited thereto. In other embodiments, not shown in the drawings, the emergency module comprises a third circuit and a control structure provided on the third circuit. The emergency module is arranged on the first pipeline, and when the control structure is in an opening state, the refrigerant is discharged through the third pipeline so as to reduce the pressure of the refrigerant in the second refrigeration loop. Specifically, when the power supply system of the air conditioning system fails, the first refrigeration circuit cannot operate normally due to the failure of the compressor to start. At this point, the operator may open the control structure of the emergency module to allow refrigerant to enter the third line through the first line and to be discharged from the third line. Like this, when the refrigerant volume reduces in the second refrigeration circuit, the refrigerant pressure in the refrigeration circuit reduces, and then has reduced the evaporating temperature and the boiling point of refrigerant, so that the refrigerant can be in the quick evaporation of first evaporimeter, in order to be used for cooling to the data center computer lab, and then solved among the prior art because the air conditioning system shut down in the short time and lead to the unable normal work of data center and even cause the problem of equipment damage, realized the incessant refrigeration of air conditioning system to the data center computer lab, ensure that the data center can normal work.

In other embodiments, not shown in the drawings, the emergency module comprises a third circuit and a control structure provided on the third circuit. The emergency module is arranged on the second pipeline, and when the control structure is in an opening state, the refrigerant flows out through the third pipeline to reduce the pressure of the refrigerant in the third refrigeration loop. Specifically, when the power supply system of the air conditioning system fails, the first refrigeration circuit cannot operate normally due to the failure of the compressor to start. At this point, the operator may open the control structure of the emergency module to allow refrigerant to enter the third line through the second line and to be discharged from the third line. Like this, when the refrigerant volume reduces in the third refrigeration circuit, the refrigerant pressure in the refrigeration circuit reduces, and then has reduced the evaporating temperature and the boiling point of refrigerant, so that the refrigerant can be in the second evaporimeter rapid evaporation, in order to be used for cooling to the data center computer lab, and then solved among the prior art because the air conditioning system shut down in the short time and lead to the unable normal work of data center and even cause the problem of equipment damage, realized the incessant refrigeration of air conditioning system to the data center computer lab, ensure that the data center can normal work.

As shown in fig. 2 and 3, the emergency module 40 further includes a cache structure 43. Wherein the buffer structure 43 is connected to the third pipe line 41 for storing the refrigerant discharged from the third pipe line 41. In this way, the refrigerant discharged from the third pipe line 41 can be buffered in the buffer structure 43, and the refrigerant is prevented from flowing out of the air conditioning system and being wasted. Meanwhile, the refrigerant cached in the cache structure 43 may reenter the second refrigeration circuit 20 and the third refrigeration circuit 30, so as to achieve the purpose of refrigerating the data center room by the air conditioning system.

Optionally, there are a plurality of emergency modules 40, the plurality of emergency modules 40 including a first emergency module 44 and a second emergency module 45, the first emergency module 44 being disposed on the first pipeline 22 and the second emergency module 45 being disposed on the second pipeline 33. The air conditioning system includes a battery module that is connected to both the first emergency module 44 and the second emergency module 45. In this embodiment, there are two emergency modules 40, the two emergency modules 40 include a first emergency module 44 and a second emergency module 45, the first emergency module 44 is disposed in the second refrigeration circuit 20, the second emergency module 45 is disposed in the third refrigeration circuit 30, and a worker can perform emergency treatment on the second refrigeration circuit 20 and the third refrigeration circuit 30 through the first emergency module 44 and the second emergency module 45 respectively to meet different use requirements and working conditions. Meanwhile, the battery module is used for supplying power to the first emergency module 44 and the second emergency module 45, so that the first emergency module 44 and the second emergency module 45 can be normally used, and the operational reliability of the emergency module 40 is improved.

Specifically, when the outdoor temperature is lower than the indoor temperature and the power supply system of the air conditioning system fails, the worker may only operate the second emergency module 45 and make the control structure 42 in the open state, so that the refrigerant in the third refrigeration circuit 30 enters the third pipeline 41 through the second pipeline 33 and is cached in the cache structure 43, and then the amount of the refrigerant in the third refrigeration circuit 30 is reduced, so that the pressure of the refrigerant in the third refrigeration circuit 30 is reduced, and further the evaporation temperature and the boiling point of the refrigerant are reduced, so that the refrigerant can be quickly evaporated in the second evaporator 32, and is used for cooling the data center machine room. Alternatively, the worker may operate the first emergency module 44 and the second emergency module 45 simultaneously, so that the control structures 42 of the first emergency module 44 and the second emergency module 45 are both in the on state, thereby improving the cooling efficiency of the air conditioning system.

When the outdoor temperature is higher than the indoor temperature and the power supply system of the air conditioning system fails, the worker may only operate the first emergency module 44 and make the control structure 42 in the open state, so that the refrigerant in the second refrigeration circuit 20 enters the third pipeline 41 through the first pipeline 22 and is cached in the cache structure 43, and further the amount of the refrigerant in the second refrigeration circuit 20 is reduced, so that the pressure of the refrigerant in the second refrigeration circuit 20 is reduced, and further the evaporation temperature and the boiling point of the refrigerant are reduced, so that the refrigerant can be quickly evaporated in the first evaporator 21, and is used for cooling the data center machine room.

As shown in fig. 2, the control structure 42 is a control valve, and the first emergency module 44 further includes a fourth conduit 441 and a first pump body 442. One end of the fourth pipeline 441 is communicated with the first pipeline 22, and the other end of the fourth pipeline 441 is communicated with the buffer structure 43 of the first emergency module 44. The first pump body 442 is disposed on the fourth line 441 to pump the refrigerant in the first line 22 into the buffer structure 43. In this way, the refrigerant in the second refrigeration circuit 20 can not only enter the buffer structure 43 through the third pipeline 41 by the control valve, but also enter the buffer structure 43 through the fourth pipeline 441 by the pumping of the first pump 442, so as to realize the rapid reduction of the pressure of the refrigerant in the second refrigeration circuit 20, thereby improving the refrigeration efficiency of the air conditioning system.

In this embodiment, the control valve and the first pump body 442 may be activated simultaneously; alternatively, only the control valve is activated; alternatively, only the first pump 442 is activated to allow more versatility in the discharge of refrigerant from the second refrigeration circuit 20 to meet different operating conditions. Specifically, when the power supply system of the air conditioning system breaks down, the staff first controls the control valve to be in the open state, when the pressure difference of the pressures on the two sides of the control valve is reduced to the pressure rise of the indoor-side refrigerant, and the evaporation speed of the refrigerant is not enough to provide enough cold, the first pump body 442 is started, and the control valve is closed, so that the discharge speed of the refrigerant is accelerated, and the evaporation speed of the liquid-state refrigerant in the first evaporator 21 is maintained, so that enough cold is provided in the data center machine room. Wherein, because the power required by the control valve and the first pump body 442 is small, only the storage battery needs to be used for supplying power.

Optionally, the control valve is a two-way valve.

Optionally, the buffer structure 43 of the first emergency module 44 has a first inlet and a first outlet, the third conduit 41 and/or the fourth conduit 441 being in communication with the first inlet, the first emergency module 44 further comprising a fifth conduit 443 and a second pump body 444. Wherein one end of the fifth pipeline 443 is communicated with the first pipeline 22, and the other end of the fifth pipeline 443 is communicated with the first outlet. The second pump body 444 is provided on the fifth line 443 to pump the refrigerant, which has entered into the first outlet, into the first line 22. In this way, the first pump body 442 is used for pumping the refrigerant in the first pipeline 22 into the buffer structure 43, the second pump body 444 is used for pumping the refrigerant in the buffer structure 43 back into the first pipeline 22 through the fifth pipeline 443, and when the power supply system of the air conditioning system returns to normal, the arrangement ensures that the second refrigeration circuit 20 has sufficient refrigerant, thereby improving the refrigeration reliability of the air conditioning system.

In the present embodiment, the third and

fourth pipes

41 and 441 are both in communication with the first inlet to deliver refrigerant into the buffer structure 43.

As shown in fig. 3, the control structure 42 is a control valve, and the second emergency module 45 further includes a sixth pipeline 451 and a third pump body 452. Wherein one end of the sixth pipeline 451 is in communication with the second pipeline 33 and the other end of the sixth pipeline 451 is in communication with the buffer structure 43 of the second emergency module 45. A third pump body 452 is provided on the sixth line 451 to pump the refrigerant in the first line 22 into the buffer structure 43. In this way, the refrigerant in the third refrigeration circuit 30 can not only enter the buffer structure 43 through the third pipeline 41 by the control valve, but also enter the buffer structure 43 through the sixth pipeline 451 under the pumping action of the third pump body 452, so as to realize the rapid reduction of the pressure of the refrigerant in the third refrigeration circuit 30, thereby improving the refrigeration efficiency of the air conditioning system.

In this embodiment, the control valve and the third pump body 452 may be actuated simultaneously; alternatively, only the control valve is activated; alternatively, only the third pump 452 may be activated to provide more versatility in the discharge of refrigerant from the third refrigeration circuit 30 to meet different operating conditions. Specifically, when the power supply system of the air conditioning system fails, the worker first controls the control valve to be in an open state, when the pressure difference between pressures on two sides of the control valve is reduced to increase the pressure of the refrigerant on the indoor side, and the evaporation speed of the refrigerant is not enough to provide enough cooling capacity, the third pump body 452 is started, and the control valve is closed, so that the discharge speed of the refrigerant is increased, and the evaporation speed of the liquid refrigerant in the second evaporator 32 is maintained, so that enough cooling capacity is provided in the data center machine room. Wherein, because the power required by the control valve and the third pump body 452 is less, only the storage battery needs to be used for power supply.

Optionally, the buffer structure 43 of the second emergency module 45 has a second inlet and a second outlet, the third line 41 and/or the sixth line 451 being in communication with the second inlet, the second emergency module 45 further comprising a seventh line 453 and a fourth pump 454. One end of the seventh pipe 453 is connected to the second pipe 33, and the other end of the seventh pipe 453 is connected to the second outlet. The fourth pump body 454 is provided on the seventh pipe 453 to pump the refrigerant introduced into the second outlet into the second pipe 33. In this way, the third pump 452 is configured to pump the refrigerant in the second pipeline 33 into the buffer storage structure 43, and the fourth pump 454 is configured to pump the refrigerant in the buffer storage structure 43 back into the second pipeline 33 through the seventh pipeline 453, so that when the power supply system of the air conditioning system returns to normal, the above arrangement ensures that the third refrigeration circuit 30 has sufficient refrigerant, and improves the refrigeration reliability of the air conditioning system.

In the present embodiment, the third pipe 41 and the sixth pipe 451 are both communicated with the second inlet to deliver the refrigerant into the buffer structure 43.

As shown in fig. 1, the second refrigeration circuit 20 also comprises an eighth line 23 and a first accumulator 24. The other end of the first evaporator 21 is connected to the heat exchanger 13 via an eighth line 23. A first reservoir 24 is provided on the first line 22. Wherein the heat exchanger 13 is located at a higher level than the first reservoir 24. The first emergency module 44 is in communication with the first reservoir 24. Therefore, on one hand, the arrangement improves the flow stability of the refrigerant in the second refrigeration circuit 20, and ensures that the second refrigeration circuit 20 can play a refrigeration role in the data center machine room; on the other hand, the refrigerant in the second refrigeration loop 20 can flow under the action of the self weight, no power equipment is needed, and the energy consumption of the air conditioning system is further reduced.

Optionally, there is one first evaporator 21, and the first reservoir 24 is located at a higher level than the first evaporator 21; alternatively, the number of the first evaporators 21 is plural, the plural first evaporators 21 are arranged at intervals in the height direction and/or the length direction of the air conditioning system, and the first reservoir 24 is located at a height higher than the first evaporator 21 located at the highest position among the plural first evaporators 21. Thus, the number and the arrangement positions of the first evaporators 21 are more flexible due to the arrangement, so that different use requirements and working conditions can be met.

In the present embodiment, there are two first evaporators 21, and the two first evaporators 21 are arranged at intervals in the height direction of the air conditioning system, so as to cool the data centers at different height positions in the data center room.

It should be noted that the number of the first evaporators 21 is not limited to this, and can be adjusted according to the working condition and the use requirement. Alternatively, the first evaporator 21 is three, or four, or five, or more.

As shown in fig. 1, the third refrigeration circuit 30 also comprises a ninth line 34 and a second accumulator 35. The other end of the second evaporator 32 is connected to the second condenser 31 through a ninth pipe 34. A second reservoir 35 is provided on the second line 33. Wherein the second condenser 31 is located at a higher level than the second accumulator 35. The second emergency module 45 communicates with the second reservoir 35. Therefore, on one hand, the arrangement improves the flow stability of the refrigerant in the third refrigeration circuit 30, and ensures that the third refrigeration circuit 30 can play a refrigeration role in a data center machine room; on the other hand, the refrigerant in the third refrigeration loop 30 can flow under the action of the self weight, no power equipment is needed, and the energy consumption of the air conditioning system is further reduced.

Optionally, there is one second evaporator 32, and the second reservoir 35 is located at a higher level than the second evaporator 32; alternatively, the number of the second evaporators 32 is plural, the plural second evaporators 32 are arranged at intervals in the height direction and/or the length direction of the air conditioning system, and the second reservoir 35 is located at a height higher than the second evaporator 32 located at the highest position among the plural second evaporators 32. Thus, the number and the arrangement positions of the second evaporators 32 are more flexible due to the arrangement, so that different use requirements and working conditions can be met.

In the present embodiment, there are two second evaporators 32, and the two second evaporators 32 are arranged at intervals along the height direction of the air conditioning system, so as to cool the data centers at different height positions in the data center room.

It should be noted that the number of the second evaporators 32 is not limited to this, and can be adjusted according to the working condition and the use requirement. Optionally, there are three, or four, or five, or more second evaporators 32.

In the present embodiment, the heat exchanger 13 is a shell-and-tube heat exchanger.

As shown in fig. 1, the first refrigeration circuit 10 further includes a third accumulator 14 and a throttling device 15. The first condenser 12 and the second condenser 31 share a fan.

In the present embodiment, when the outdoor temperature is low enough to satisfy the indoor cooling demand, the compressor 11 stops operating, and the third refrigeration circuit 30 is activated for cooling the indoor. When the outdoor temperature rises or the indoor thermal power is too large, the compressor 11 is started to refrigerate the indoor space through the first refrigeration loop 10. Therefore, the operation mode of the air conditioning system can effectively utilize outdoor natural cold sources in day and night, transition seasons and winter, and the operation energy consumption is greatly reduced.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

when a power supply system of the air conditioning system breaks down, the first refrigeration loop cannot normally operate due to the fact that the compressor cannot be started. At the moment, the working personnel can open the control structure of the emergency module so that the refrigerant enters the third pipeline through the first pipeline and is discharged from the third pipeline; and/or, to allow refrigerant to enter the third line through the second line and to exit the third line. Therefore, when the amount of the refrigerant in the second refrigeration circuit and/or the third refrigeration circuit is reduced, the pressure of the refrigerant in the refrigeration circuit is reduced, the evaporation temperature and the boiling point of the refrigerant are reduced, so that the refrigerant can be rapidly evaporated in the first evaporator and/or the second evaporator, and the refrigerant is used for cooling the data center machine room, and the problem that the data center cannot normally work or even equipment is damaged due to the fact that an air conditioning system is shut down within a short time in the prior art is solved, uninterrupted refrigeration of the data center machine room by the air conditioning system is achieved, and the data center can normally work is guaranteed.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An air conditioning system, comprising:

the first refrigeration circuit (10) comprises a compressor (11), a first condenser (12) and a heat exchanger (13), wherein the first condenser (12) is connected with an exhaust port of the compressor (11), and the heat exchanger (13) is connected with an air suction port of the compressor (11);

a second refrigeration circuit (20) located indoors, the second refrigeration circuit (20) comprising a first evaporator (21) and a first pipe (22), one end of the first evaporator (21) being connected to the heat exchanger (13) through the first pipe (22);

a third refrigeration circuit (30) comprising a second condenser (31), a second evaporator (32) and a second pipeline (33), wherein the second condenser (31) is located outdoors, the second evaporator (32) is located indoors, and one end of the second evaporator (32) is connected with the second condenser (31) through the second pipeline (33);

an emergency module (40) comprising a third circuit (41) and a control structure (42) arranged on said third circuit (41); wherein the emergency module (40) is arranged on the first line (22), refrigerant being discharged through the third line (41) when the control structure (42) is in the open condition, so as to reduce the pressure of refrigerant in the second refrigeration circuit (20); and/or the emergency module (40) is arranged on the second line (33), the refrigerant flowing out through the third line (41) when the control structure (42) is in the open condition, so as to reduce the pressure of the refrigerant in the third refrigeration circuit (30).

2. Air conditioning system according to claim 1, characterized in that said emergency module (40) further comprises:

a buffer structure (43), the buffer structure (43) being connected with the third pipe line (41) for storing the refrigerant discharged from the third pipe line (41).

3. Air conditioning system according to claim 1, wherein said emergency module (40) is a plurality, said plurality of emergency modules (40) comprising a first emergency module (44) and a second emergency module (45), said first emergency module (44) being arranged on said first pipeline (22) and said second emergency module (45) being arranged on said second pipeline (33); the air conditioning system comprises a battery module, and the battery module is connected with the first emergency module (44) and the second emergency module (45).

4. The air conditioning system of claim 3, wherein the control structure (42) is a control valve, and the first emergency module (44) further comprises:

a fourth pipeline (441), one end of the fourth pipeline (441) is communicated with the first pipeline (22), and the other end of the fourth pipeline (441) is communicated with a buffer structure (43) of the first emergency module (44);

a first pump body (442) disposed on the fourth line (441) to pump refrigerant in the first line (22) into the buffer structure (43).

5. Air conditioning system according to claim 4, wherein the buffer structure (43) of the first emergency module (44) has a first inlet and a first outlet, the third duct (41) and/or the fourth duct (441) communicating with the first inlet, the first emergency module (44) further comprising:

a fifth pipeline (443), one end of the fifth pipeline (443) being in communication with the first pipeline (22), the other end of the fifth pipeline (443) being in communication with the first outlet;

a second pump body (444) disposed on the fifth line (443) to pump refrigerant entering into the first outlet into the first line (22).

6. Air conditioning system according to claim 3, characterized in that said control structure (42) is a control valve, said second emergency module (45) further comprising:

a sixth pipeline (451), one end of the sixth pipeline (451) being communicated with the second pipeline (33), the other end of the sixth pipeline (451) being communicated with the buffer structure (43) of the second emergency module (45);

a third pump body (452) disposed on the sixth line (451) to pump refrigerant in the first line (22) into the buffer structure (43).

7. Air conditioning system according to claim 6, characterized in that the buffer structure (43) of the second emergency module (45) has a second inlet and a second outlet, the third line (41) and/or the sixth line (451) communicating with the second inlet, the second emergency module (45) further comprising:

a seventh pipe (453), one end of the seventh pipe (453) being in communication with the second pipe (33), the other end of the seventh pipe (453) being in communication with the second outlet;

a fourth pump body (454), the fourth pump body (454) being provided on the seventh pipe line (453) to pump the refrigerant, which enters into the second outlet, into the second pipe line (33).

8. Air conditioning system according to claim 3, characterized in that said second refrigeration circuit (20) further comprises:

an eighth line (23), through which the other end of the first evaporator (21) is connected to the heat exchanger (13);

a first reservoir (24) disposed on the first conduit (22); wherein the heat exchanger (13) is located at a higher level than the first reservoir (24); the first emergency module (44) is in communication with the first reservoir (24).

9. Air conditioning system according to claim 8, characterized in that said first evaporator (21) is one, said first reservoir (24) being located at a higher level than said first evaporator (21); or, the number of the first evaporators (21) is multiple, the multiple first evaporators (21) are arranged at intervals along the height direction and/or the length direction of the air conditioning system, and the first liquid reservoir (24) is higher than the first evaporator (21) at the highest position in the multiple first evaporators (21).

10. Air conditioning system according to claim 3, characterized in that said third refrigeration circuit (30) further comprises:

a ninth pipe (34), through which the other end of the second evaporator (32) is connected with the second condenser (31);

a second reservoir (35) arranged on the second line (33); wherein the second condenser (31) is located at a higher level than the second accumulator (35); the second emergency module (45) is in communication with the second reservoir (35).

11. Air conditioning system according to claim 10, characterized in that said second evaporator (32) is one, said second reservoir (35) being located at a higher level than said second evaporator (32); or, the number of the second evaporators (32) is multiple, the multiple second evaporators (32) are arranged at intervals along the height direction and/or the length direction of the air conditioning system, and the second liquid reservoir (35) is higher than the second evaporator (32) at the highest position in the multiple second evaporators (32).