Cold source equipment and control method thereof

Abstract

The embodiment of the invention relates to cold source equipment and a control method thereof. The cold source equipment comprises a refrigerating unit and a controller. The refrigerating unit comprises at least two refrigerating machines; the number of refrigerating modes of a refrigerating machine in the refrigerating unit is greater than or equal to two; the controller is connected with a refrigerating machine in the refrigerating unit; the controller is configured to control a refrigerating machine in a working state in the refrigerating unit to refrigerate through a target connection mode and a target refrigerating mode, so that the cold source equipment is in a target operation mode; wherein the target refrigeration mode is any one of at least two refrigeration modes of the refrigerator. Therefore, the richness of the operation mode of the cold source equipment and the matching degree of the operation mode and the use scene are improved.

Description

Technical Field

[0001] The present application relates to the field of refrigeration technology, and in particular to a cold source device and a control method thereof. Background Art

[0002] As server heat density continues to increase, server cooling becomes increasingly important. To ensure uninterrupted cooling year-round, data centers typically utilize primary and secondary refrigeration units. The energy efficiency and operational stability of these units are crucial to the efficient and energy-efficient operation of data centers. Currently, these units operate as separate entities, each with its own independent systems and controllers. These units require a group control system for communication and scheduling, resulting in a single operating model that poorly matches the cooling equipment's operating mode with the intended use case.

[0003] It can be seen that how to improve the matching degree between the operation mode of cold source equipment and the usage scenario is a technical issue worthy of attention. Summary of the Invention

[0004] In view of this, in order to solve some or all of the above technical problems, an embodiment of the present application provides a cold source device and a control method thereof.

[0005] In a first aspect, an embodiment of the present application provides a cold source device, the cold source device comprising a refrigeration unit and a controller;

[0006] The refrigeration unit includes at least two refrigeration machines;

[0007] The refrigerators in the refrigeration unit are connected;

[0008] The number of refrigeration modes of the refrigeration machine in the refrigeration unit is greater than or equal to two;

[0009] The controller is connected to the refrigerator in the refrigeration unit;

[0010] The controller is configured to: control the refrigerator in the working state in the refrigeration group to perform refrigeration through a target connection method and a target refrigeration mode, so that the cold source device is in a target operating mode; wherein the target refrigeration mode is any one of at least two refrigeration modes of the refrigerator.

[0011] In some possible implementations, each refrigerator in the refrigeration unit includes: a host, a free cooling module, a cooling pump, a cooling inlet valve, a cooling bypass valve, a freezing pump, a freezing inlet valve, a free cooling freezing bypass valve, a free cooling freezing outlet valve, a host freezing bypass valve, and a host freezing outlet valve;

[0012] The host is respectively connected to the cooling tower, the natural cooling module, the cooling inlet valve, the natural cooling freezing outlet valve, the host freezing bypass valve and the host freezing outlet valve;

[0013] The natural cooling module is also respectively connected to the cooling inlet valve, the cooling bypass valve, the refrigeration inlet valve, the natural cooling refrigeration bypass valve, and the natural cooling refrigeration outlet valve;

[0014] The cooling tower is also connected to the cooling pump;

[0015] The refrigeration inlet valve is also connected to the refrigeration pump.

[0016] In some possible embodiments, each refrigerating machine includes three refrigeration modes: a cooling mode, a refrigeration mode, and a hybrid mode, and the refrigeration unit includes a first refrigerating machine and a second refrigerating machine;

[0017] The main machine in the first refrigerating machine is also connected to the natural cooling module and the main machine in the second refrigerating machine;

[0018] The natural cooling module in the first refrigerating machine is also respectively connected to the main machine in the second refrigerating machine.

[0019] In some possible embodiments, when the target operating mode is the first operating mode, the following components of the first refrigerating machine or the second refrigerating machine are in an open state:

[0020] Cooling tower, cooling pump, cooling bypass valve, refrigeration pump, refrigeration inlet valve, natural cooling refrigeration outlet valve, main machine refrigeration outlet valve.

[0021] In some possible embodiments, when the target operating mode is the second operating mode, a first component and a second component are in an open state, and the opening time of the first component is earlier than the opening time of the second component;

[0022] The first component includes the cooling tower, cooling pump, cooling inlet valve, refrigeration pump, refrigeration inlet valve, natural cooling refrigeration outlet valve, and main machine refrigeration outlet valve of the first refrigerating machine; the second component includes the main machine of the first refrigerating machine; or,

[0023] The first component includes the cooling tower, cooling pump, cooling inlet valve, refrigeration pump, refrigeration inlet valve, natural cooling refrigeration outlet valve, and main machine refrigeration outlet valve of the second refrigerating machine; the second component includes the main machine of the second refrigerating machine.

[0024] In some possible embodiments, when the target operating mode is the third operating mode, a third component and a fourth component are in an open state, and the opening time of the third component is earlier than the opening time of the fourth component;

[0025] The third component includes the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, and main unit chilled water outlet valve of the first chiller; the fourth component includes the main unit of the first chiller; or,

[0026] The third component includes the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, and main unit chilled water outlet valve of the second chiller; the fourth component includes the main unit of the second chiller; or,

[0027] The third component includes the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, free cooling chilled water bypass valve of the first chiller, and the free cooling chilled water outlet valve, main unit chilled water outlet valve, cooling tower, cooling pump, and cooling inlet valve of the second chiller; the fourth component includes the main unit of the second chiller; or,

[0028] The third component includes the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, free cooling chilled water bypass valve of the second chiller, and the free cooling chilled water outlet valve, main unit chilled water outlet valve, cooling tower, cooling pump, and cooling inlet valve of the first chiller; the fourth component includes the main unit of the first chiller.

[0029] In some possible implementation manners, when the target operation mode is the fourth operation mode, the fifth component is in an open state;

[0030] The fifth component includes: the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, and main unit chilled water bypass valve of the first chiller, and the cooling tower, cooling pump, cooling bypass valve, free cooling chilled water outlet valve, and main unit chilled water outlet valve of the second chiller; or,

[0031] The fifth component includes: the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, and main unit chilled water bypass valve of the second chiller, and the cooling tower, cooling pump, cooling bypass valve, free cooling chilled water outlet valve, and main unit chilled water outlet valve of the first chiller.

[0032] In some possible implementation manners, when the target operation mode is the fifth operation mode, the sixth component and the seventh component are in an open state, and the opening time of the sixth component is earlier than the opening time of the seventh component;

[0033] The sixth component includes the cooling tower, cooling pump, cooling inlet valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, main chiller bypass valve of the first chiller, and the free cooling chilled water outlet valve, main chiller outlet valve, cooling tower, cooling pump, cooling inlet valve of the second chiller; the seventh component includes the main chiller of the first chiller and the main chiller of the second component; or,

[0034] The sixth component includes the cooling tower, cooling pump, cooling inlet valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, main chiller bypass valve of the second chiller, and the free cooling chilled water outlet valve, main chiller outlet valve, cooling tower, cooling pump, cooling inlet valve of the first chiller; the seventh component includes the main chiller of the first chiller and the main chiller of the second component.

[0035] In some possible embodiments, when the target operating mode is the sixth operating mode, the eighth component and the ninth component are in an open state, and the opening time of the eighth component is earlier than the opening time of the ninth component;

[0036] The eighth component includes the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, main chiller bypass valve of the first chiller, and the cooling tower, cooling pump, cooling bypass valve, free cooling chilled water outlet valve, main chiller outlet valve of the second chiller; the ninth component includes the main chiller of the first chiller and the main chiller of the second chiller; or,

[0037] The eighth component includes the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, main chiller bypass valve of the second chiller, and the cooling tower, cooling pump, cooling bypass valve, free cooling chilled water outlet valve, main chiller outlet valve of the first chiller; the ninth component includes the main chiller of the first chiller and the main chiller of the second chiller.

[0038] In some possible embodiments, when the target operating mode is the seventh operating mode, the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, main chiller outlet valve of the first chiller are turned on, and the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, main chiller outlet valve of the second chiller are turned on.

[0039] In some possible embodiments, when the target operating mode is the eighth operating mode, the tenth component and the eleventh component are in an open state, and the opening time of the tenth component is earlier than the opening time of the eleventh component;

[0040] The tenth component includes the cooling towers, cooling pumps, cooling inlet valves, chilled water pumps, chilled water inlet valves, free cooling chilled water outlet valves, and main unit chilled water outlet valves of the first chiller, as well as the cooling towers, cooling pumps, cooling inlet valves, chilled water pumps, chilled water inlet valves, free cooling chilled water outlet valves, and main unit chilled water outlet valves of the second chiller;

[0041] The eleventh component includes the main units of the first chiller and the second chiller.

[0042] In some possible implementation manners, when the target operation mode is the ninth operation mode, the twelfth component and the thirteenth component are in an open state, and the opening moment of the twelfth component is earlier than that of the thirteenth component;

[0043] The twelfth component includes the cooling towers, cooling pumps, cooling bypass valves, chilled water pumps, chilled water inlet valves, free cooling chilled water outlet valves, and main unit chilled water outlet valves of the first chiller, as well as the cooling towers, cooling pumps, cooling bypass valves, chilled water pumps, chilled water inlet valves, free cooling chilled water outlet valves, and main unit chilled water outlet valves of the second chiller; the thirteenth component includes the main units of the first chiller and the second chiller.

[0044] In some possible implementation manners, the free cooling module includes a cooling side heat exchanger and a chilled water side heat exchanger;

[0045] The cooling side heat exchanger is respectively connected to the main unit, the cooling inlet valve, and the cooling bypass valve;

[0046] The chilled water side heat exchanger is respectively connected to the chilled water inlet valve, the free cooling chilled water bypass valve, and the free cooling chilled water outlet valve.

[0047] In some possible implementation manners, each chiller includes three refrigeration modes: a cooling mode, a chilled water mode, and a hybrid mode; and

[0048] When the target operation mode is the first operation mode, the number of chillers in the working state is one, the target connection method represents single-unit connection, and the target refrigeration mode represents the cooling mode; or,

[0049] When the target operation mode is the second operation mode, the number of chillers in the working state is one, the target connection method represents single-unit connection, and the target refrigeration mode represents the chilled water mode; or,

[0050] When the target operation mode is the third operation mode, the number of chillers in the working state is one, the target connection method represents single-unit connection, and the target refrigeration mode represents the hybrid mode; or,

[0051] When the target operation mode is the fourth operation mode, the number of refrigerating machines in the working state is two, the target connection mode represents double-machine series connection, and the target refrigeration mode represents the cooling mode; or,

[0052] When the target operation mode is the fifth operation mode, the number of refrigerating machines in the working state is two, the target connection mode represents double-machine series connection, and the target refrigeration mode represents the freezing mode; or,

[0053] When the target operation mode is the sixth operation mode, the number of refrigerating machines in the working state is two, the target connection mode represents double-machine series connection, and the target refrigeration mode represents the hybrid mode; or,

[0054] When the target operation mode is the seventh operation mode, the number of refrigerating machines in the working state is two, the target connection mode represents double-machine parallel connection, and the target refrigeration mode represents the cooling mode; or,

[0055] When the target operation mode is the eighth operation mode, the number of refrigerating machines in the working state is two, the target connection mode represents double-machine parallel connection, and the target refrigeration mode represents the freezing mode; or,

[0056] When the target operation mode is the ninth operation mode, the number of refrigerating machines in the working state is two, the target connection mode represents double-machine parallel connection, and the target refrigeration mode represents the hybrid mode.

[0057] In some possible implementation manners, the cold source device is integrally provided.

[0058] In a second aspect, an embodiment of the present application provides a cold source system, and the cold source system includes: a cold source device, a liquid-cooled cabinet, and a cooling tower;

[0059] The cold source device is the cold source device described in any embodiment of the first aspect above;

[0060] The cold source device is respectively connected to the liquid-cooled cabinet and the cooling tower.

[0061] In a third aspect, an embodiment of the present application provides a control method for a cold source device, the cold source device is the cold source device described in any embodiment of the first aspect above, and the method includes:

[0062] Controlling the refrigerating machines in the working state in the refrigeration unit of the cold source device to perform refrigeration through the target connection mode and the target refrigeration mode, so that the cold source device is in the target operation mode;

[0063] Wherein, the target refrigeration mode is any one of at least two refrigeration modes of the refrigerating machine.

[0064] The cold source device provided by the embodiment of the present application includes a refrigeration unit and a controller; at least two refrigerating machines are included in the refrigeration unit; each refrigerating machine in the refrigeration unit is connected; the number of refrigeration modes of the refrigerating machines in the refrigeration unit is greater than or equal to two; the controller is connected to the refrigerating machines in the refrigeration unit; the controller is configured to: control the refrigerating machines in the refrigeration unit that are in the working state to perform refrigeration through a target connection mode and a target refrigeration mode, so that the cold source device is in a target operation mode; wherein, the target refrigeration mode is any one of at least two refrigeration modes of the refrigerating machine. Thus, since the cold source device includes at least two refrigerating machines, each refrigerating machine has at least two refrigeration modes, and the refrigerating machines can be connected in a variety of different ways, in this way, by controlling different combinations of the number, refrigeration mode and connection mode of the refrigerating machines in the working state, multiple operation modes of the cold source device can be realized, and then different refrigeration strategies can be adopted according to different usage scenarios, improving the richness of the operation modes of the cold source device and the matching degree between the operation mode and the usage scenario.

[0065] The cold source system provided by the embodiment of the present application includes: a cold source device, a liquid-cooled cabinet and a cooling tower; the cold source device is the cold source device described in any one of the embodiments of the first aspect above; the cold source device is respectively connected to the liquid-cooled cabinet and the cooling tower. Thus, since the cold source device includes at least two refrigerating machines, each refrigerating machine has at least two refrigeration modes, and the refrigerating machines can be connected in a variety of different ways, in this way, by controlling different combinations of the number, refrigeration mode and connection mode of the refrigerating machines in the working state, multiple operation modes of the cold source system can be realized, and then different refrigeration strategies can be adopted according to different usage scenarios, improving the richness of the operation modes of the cold source device and the matching degree between the operation mode and the usage scenario.

[0066] In the control method of the cold source device provided by the embodiment of the present application, the cold source device is the cold source device described in any item of the above first aspect. The method can control the refrigerating machines in the working state in the refrigerating unit of the cold source device to refrigerate through the target connection method and the target refrigeration mode, so that the cold source device is in the target operation mode; wherein, the target refrigeration mode is any one of at least two refrigeration modes of the refrigerating machine. Thus, since the cold source device includes at least two refrigerating machines, each refrigerating machine has at least two refrigeration modes, and the refrigerating machines can be connected in a variety of different ways, in this way, by controlling different combinations of the number, refrigeration mode and connection mode of the refrigerating machines in the working state, a variety of operation modes of the cold source device can be realized. Furthermore, different refrigeration strategies can be adopted according to different usage scenarios, which improves the richness of the operation modes of the cold source device and the matching degree between the operation mode and the usage scenario. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present application and used together with the specification to explain the principles of the present application.

[0068] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0069] One or more embodiments are illustrated by way of example in the pictures in the corresponding accompanying drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the figures do not constitute a proportional limitation.

[0070] Figure 1 It is a schematic structural diagram of a cold source device provided by an embodiment of the present application;

[0071] Figure 2 It is a schematic structural diagram of another cold source device provided by an embodiment of the present application;

[0072] Figure 3 It is a schematic structural diagram of the main unit in a cold source device provided by an embodiment of the present application;

[0073] Figure 4 It is a schematic structural diagram of the natural cooling module in a cold source device provided by an embodiment of the present application;

[0074] Figure 5 It is a schematic structural diagram of a cold source system provided by an embodiment of the present application;

[0075] Figure 6 It is a schematic flowchart of a control method for a cold source device provided by an embodiment of the present application. Specific embodiments

[0076] Now, various exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present application.

[0077] Those skilled in the art can understand that terms such as "first" and "second" in the embodiments of the present application are only used to distinguish different steps, devices or modules, etc., and do not represent any specific technical meaning, nor do they represent the logical order between them.

[0078] It should also be understood that in this embodiment, "a plurality of" may refer to two or more, and "at least one" may refer to one, two or more.

[0079] It should also be understood that for any component, data or structure mentioned in the embodiments of the present application, without clear definition or contrary indication in the context, it can generally be understood as one or more.

[0080] In addition, the term "and / or" in the present application is only a description of the association relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the associated objects before and after.

[0081] It should also be understood that the description of each embodiment of the present application emphasizes the differences between the embodiments, and their similarities can be referred to each other. For the sake of brevity, they will not be repeated one by one.

[0082] The following description of at least one exemplary embodiment is actually only illustrative and does not impose any limitation on the present application and its application or use.

[0083] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the above techniques, methods and devices should be regarded as part of the specification.

[0084] It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0085] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. For the convenience of understanding the embodiments of the present application, the present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0086] To solve the technical problem of how to improve the matching degree between the operation mode of the cold source device and the usage scenario in the prior art, the present application provides a cold source device and its control method, which can improve the matching degree between the operation mode of the cold source device and the usage scenario.

[0087] Figure 1 It is a schematic structural diagram of a cold source device provided by an embodiment of the present application

[0088] As Figure 1 shown, the cold source device includes a refrigeration unit 11 and a controller 12.

[0089] The refrigeration unit 11 includes at least two refrigerators.

[0090] The refrigerators in the refrigeration unit 11 are connected to each other. That is, the refrigerators in the refrigeration unit 11 can be connected pairwise.

[0091] The number of refrigeration modes of the refrigerators in the refrigeration unit 11 is greater than or equal to two. For example, the number of refrigeration modes of the refrigerators in the refrigeration unit 11 can be 2, 3, 4, etc. The refrigeration modes of different refrigerators can be the same or different.

[0092] The controller 12 is connected to the refrigerators in the refrigeration unit 11.

[0093] The controller 12 can be used to control whether the refrigerators in the refrigeration unit 11 are in the working state, the connection mode of the refrigerators, the refrigeration mode of the refrigerators, etc.

[0094] The controller 12 is configured to: control the refrigerators in the refrigeration unit 11 that are in the working state to refrigerate through the target connection mode and the target refrigeration mode, so that the cold source device is in the target operation mode.

[0095] Among them, when the number of refrigerators in the working state is one, the target connection mode can represent single-unit connection; when the number of refrigerators in the working state is two, the target connection mode can represent the series or parallel connection of two refrigerators in the working state; when the number of refrigerators in the working state is three, the target connection mode can represent the connection mode among three refrigerators in the working state, such as all three refrigerators in series, all three refrigerators in parallel, etc.

[0096] Among them, the target refrigeration mode is any one of at least two refrigeration modes of the refrigerator.

[0097] In some optional implementation manners of this embodiment, to solve the technical problem of how to improve the operation stability of the cold source device, each refrigerator in the refrigeration unit 11 includes: a main machine, a natural cooling module, a cooling pump, a cooling inlet valve, a cooling bypass valve, a freezing pump, a freezing inlet valve, a natural cooling freezing bypass valve, a natural cooling freezing outlet valve, a main machine freezing bypass valve, and a main machine freezing outlet valve.

[0098] The main machine is respectively connected to a cooling tower, the natural cooling module, the cooling inlet valve, the natural cooling freezing outlet valve, the main machine freezing bypass valve, and the main machine freezing outlet valve.

[0099] The natural cooling module is also respectively connected to the cooling inlet valve, the cooling bypass valve, the freezing inlet valve, the natural cooling freezing bypass valve, and the natural cooling freezing outlet valve.

[0100] The cooling tower is also connected to the cooling pump.

[0101] The freezing inlet valve is also connected to the freezing pump.

[0102] As an example, please refer to Figure 2 , in Figure 2 Among them, the refrigeration unit 11 in the cold source device 10 includes two refrigerators. One refrigerator includes: a main machine 101a, a natural cooling module 102a, a cooling pump 103a, a cooling inlet valve 104a, a cooling bypass valve 105a, a freezing pump 106a, a freezing inlet valve 107a, a natural cooling freezing bypass valve 108a, a natural cooling freezing outlet valve 109a, a main machine freezing bypass valve 1010a, and a main machine freezing outlet valve 1011a; the other refrigerator includes: a main machine 101b, a natural cooling module 102b, a cooling pump 103b, a cooling inlet valve 104b, a cooling bypass valve 105b, a freezing pump 106b, a freezing inlet valve 107b, a natural cooling freezing bypass valve 108b, a natural cooling freezing outlet valve 109b, a main machine freezing bypass valve 1010b, and a main machine freezing outlet valve 1011b.

[0103] The main unit 101a is respectively connected to the cooling tower 30a, the free cooling module 102a, the cooling inlet valve 104a, the free cooling refrigeration outlet valve 109a, the main unit refrigeration bypass valve 1010a, and the main unit refrigeration outlet valve 1011a.

[0104] The free cooling module 102a is also respectively connected to the cooling inlet valve 104a, the cooling bypass valve 105a, the refrigeration inlet valve 107a, the free cooling refrigeration bypass valve 108a, and the free cooling refrigeration outlet valve 109a.

[0105] The cooling tower 30a is also connected to the cooling pump 103a.

[0106] The refrigeration inlet valve 107a is also connected to the refrigeration pump 106a.

[0107] The main unit 101b is respectively connected to the cooling tower 30b, the free cooling module 102b, the cooling inlet valve 104b, the free cooling refrigeration outlet valve 109b, the main unit refrigeration bypass valve 1010b, and the main unit refrigeration outlet valve 1011b.

[0108] The free cooling module 102b is also respectively connected to the cooling inlet valve 104b, the cooling bypass valve 105b, the refrigeration inlet valve 107b, the free cooling refrigeration bypass valve 108b, and the free cooling refrigeration outlet valve 109b.

[0109] The cooling tower 30b is also connected to the cooling pump 103b.

[0110] The refrigeration inlet valve 107b is also connected to the refrigeration pump 106b.

[0111] In addition, as Figure 3 shown, the main unit (such as the main unit 101a, the main unit 101b) may include a compressor 1, an evaporator 2, a throttling device 3, and a condenser 4.

[0112] It can be understood that in the above optional implementation manners, by setting the same refrigerating machines in the refrigeration unit, a primary and standby relationship can be formed between the refrigerating machines, thereby improving the operation stability of the cold source equipment.

[0113] In some application scenarios of the above optional implementation manners, to solve the technical problems of how to improve the richness of the operation modes of the cold source equipment and the matching degree between the operation modes and the usage scenarios, each refrigerating machine includes three refrigeration modes: a cooling mode, a refrigeration mode, and a hybrid mode. The refrigeration unit 11 includes a first refrigerating machine 111a and a second refrigerating machine 111b. The main unit in the first refrigerating machine 111a is also connected to the free cooling module in the second refrigerating machine 111b and the main unit in the second refrigerating machine 111b. The free cooling module in the first refrigerating machine 111a is also respectively connected to the main unit in the second refrigerating machine 111b.

[0114] As an example, refer toFigure 2 , in Figure 2 , the main unit 101a in the first chiller 111a is further connected to the free cooling module 102b in the second chiller 111b and the main unit 101b in the second chiller 111b. The free cooling module 102a in the first chiller 111a is further connected to the main unit 101b in the second chiller 111b respectively.

[0115] It can be understood that in the above application scenario, each chiller includes three refrigeration modes: cooling mode, freezing mode, and hybrid mode. In this way, since the cold source device includes at least two chillers, each chiller has at least two refrigeration modes, and the chillers can be connected in a variety of different ways. Thus, by controlling different combinations of the number, refrigeration mode, and connection method of the chillers in the working state, nine operation modes of the cold source device can be realized. Furthermore, different refrigeration strategies can be adopted according to different usage scenarios, which further improves the richness of the operation modes of the cold source device and the matching degree between the operation modes and the usage scenarios.

[0116] In some cases of the above application scenario, in order to solve the technical problem of the low matching degree between the operation mode and the usage scenario, when the target operation mode is the first operation mode, the following components of the first chiller 111a or the second chiller 111b are in the on state: cooling tower, cooling pump, cooling bypass valve, freezing pump, freezing inlet valve, free cooling freezing outlet valve, main unit freezing outlet valve.

[0117] Among them, the first operation mode can represent the single-unit free cooling mode, that is, a single chiller is in the cooling refrigeration mode.

[0118] As an example, please refer to Figure 2 , when the free cooling module 102a operates in the single-unit free cooling mode, the cooling tower 30a, cooling pump 103a, cooling bypass valve 105a, freezing pump 106a, freezing inlet valve 107a, free cooling freezing outlet valve 109a, and main unit freezing outlet valve 1011a can be turned on. In the above situation, the components not mentioned can be in the off state.

[0119] When the free cooling module 102b operates in the single-unit free cooling mode, the cooling tower 30b, cooling pump 103b, cooling bypass valve 105b, freezing pump 106b, freezing inlet valve 107b, free cooling freezing outlet valve 109b, and main unit freezing outlet valve 1011b can be turned on. In the above situation, the components not mentioned can be in the off state.

[0120] It can be understood that in the above situation, since the single-machine natural cooling mode means that only one of the two natural cooling modules in the cold source device is separately turned on, the lower limit of the cooling capacity output range can be broadened, meeting the usage requirements of low rack installation rate in the computer room at the initial stage of data center construction. This mode can be applicable to scenarios where the outdoor temperature is relatively low and the server cooling demand is low, thus improving the matching degree between the operating mode of the cold source device and the scenario with a relatively low outdoor temperature and low server cooling demand.

[0121] In some cases of the above application scenarios, to solve the technical problem of relatively low matching degree between the operating mode and the usage scenario, when the target operating mode is the second operating mode, the first component and the second component are in the on state, and the turn-on moment of the first component is earlier than that of the second component.

[0122] The first component includes the cooling tower, cooling pump, cooling inlet valve, chilled water pump, chilled water inlet valve, natural cooling chilled water outlet valve, and main engine chilled water outlet valve of the first chiller 111a; the second component includes the main engine of the first chiller 111a; or,

[0123] The first component includes the cooling tower, cooling pump, cooling inlet valve, chilled water pump, chilled water inlet valve, natural cooling chilled water outlet valve, and main engine chilled water outlet valve of the second chiller 111b; the second component includes the main engine of the second chiller 111b.

[0124] Among them, the second operating mode can represent the single-machine refrigeration mode, that is, a single chiller is in the refrigeration mode of refrigeration.

[0125] As an example, please refer to Figure 2 , when the main engine 101a operates in the single-machine refrigeration mode, first turn on the cooling tower 30a, cooling pump 103a, cooling inlet valve 104a, chilled water pump 106a, chilled water inlet valve 107a, natural cooling chilled water outlet valve 109a, and main engine chilled water outlet valve 1011a in advance, and then start the main engine 101a. In the above situation, the components not mentioned can be in the off state.

[0126] For the main engine 101b, when operating in the single-machine refrigeration mode, first turn on the cooling tower 30b, cooling pump 103b, cooling inlet valve 104b, chilled water pump 106b, chilled water inlet valve 107b, natural cooling chilled water outlet valve 109b, and main engine chilled water outlet valve 1011b in advance, and then turn on the main engine 101b. In the above situation, the components not mentioned can be in the off state.

[0127] It can be understood that in the above case, in the single-unit refrigeration mode, one of the two main units is turned on, enabling the cold source device to achieve the function of one-use-one-backup in single-unit refrigeration and being able to switch to the backup unit for single-unit refrigeration when needed. It is applicable to scenarios with high outdoor temperature and low server cooling demand, thus improving the matching degree between the operating mode of the cold source device and the scenario with high outdoor temperature and low server cooling demand.

[0128] In some cases in the above application scenarios, to solve the technical problem of low matching degree between the operating mode and the usage scenario, when the target operating mode is the third operating mode, the third component and the fourth component are in the on state, and the turning-on moment of the third component is earlier than that of the fourth component.

[0129] The third component includes the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, natural cooling chilled water outlet valve, and main unit chilled water outlet valve of the first chiller 111a; the fourth component includes the main unit of the first chiller 111a; or,

[0130] The third component includes the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, natural cooling chilled water outlet valve, and main unit chilled water outlet valve of the second chiller 111b; the fourth component includes the main unit of the second chiller 111b; or,

[0131] The third component includes the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, natural cooling chilled water bypass valve of the first chiller 111a, and the natural cooling chilled water outlet valve, main unit chilled water outlet valve, cooling tower, cooling pump, and cooling inlet valve of the second chiller 111b; the fourth component includes the main unit of the second chiller 111b; or,

[0132] The third component includes the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, natural cooling chilled water bypass valve of the second chiller 111b, and the natural cooling chilled water outlet valve, main unit chilled water outlet valve, cooling tower, cooling pump, and cooling inlet valve of the first chiller 111a; the fourth component includes the main unit of the first chiller 111a.

[0133] Among them, the third operating mode can represent the single-unit hybrid cooling mode, that is, a single chiller is in a refrigeration mode that combines the cooling mode and the freezing mode.

[0134] As an example, please refer to Figure 2 , in Figure 2When running in the single - machine hybrid cooling mode for the host 101a and the free - cooling module 102a, first, the cooling tower 30a, the cooling pump 103a, the cooling bypass valve 105a, the chiller pump 106a, the chilled - water inlet valve 107a, the free - cooling chilled - water outlet valve 109a, and the host chilled - water outlet valve 1011a are turned on in advance, and then the host 101a is turned on. In the above cases, the components not mentioned can be in the closed state.

[0135] When running in the single - machine hybrid cooling mode for the host 101a and the free - cooling module 102b, first, the cooling tower 30b, the cooling pump 103b, the cooling bypass valve 105b, the chiller pump 106b, the chilled - water inlet valve 107b, the free - cooling chilled - water bypass valve 108b, the free - cooling chilled - water outlet valve 109a, and the host chilled - water outlet valve 1011a are turned on in advance, and then the host 101a is turned on. In the above cases, the components not mentioned can be in the closed state.

[0136] When running in the single - machine hybrid cooling mode for the host 101b and the free - cooling module 102b, first, the cooling tower 30b, the cooling pump 103b, the cooling bypass valve 105b, the chiller pump 106b, the chilled - water inlet valve 107b, the free - cooling chilled - water outlet valve 109b, and the host chilled - water outlet valve 1011b are turned on in advance, and then the host 101b is turned on. In the above cases, the components not mentioned can be in the closed state.

[0137] When running in the single - machine hybrid cooling mode for the host 101b and the free - cooling module 102a, first, the cooling tower 30a, the cooling pump 103a, the cooling bypass valve 105a, the chiller pump 106a, the chilled - water inlet valve 107a, the free - cooling chilled - water bypass valve 108a, the free - cooling chilled - water outlet valve 109b, and the host chilled - water outlet valve 1011b are turned on in advance, and then the host 101b is turned on. In the above cases, the components not mentioned can be in the closed state.

[0138] It can be understood that in the above cases, in the single - machine hybrid cooling mode, one of the two hosts and one of the two free - cooling modules can be turned on to run the single - machine hybrid cooling mode, enabling the cold - source equipment to make more full use of the natural cold source and improving the operating economy. It is applicable to scenarios where the outdoor temperature is low and the server cooling demand is low, thus improving the matching degree between the operating mode of the cold - source equipment and the scenario with a low outdoor temperature and a low server cooling demand.

[0139] In some cases of the above application scenarios, to solve the technical problem of the low matching degree between the operating mode and the usage scenario, when the target operating mode is the fourth operating mode, the fifth component is in the on state.

[0140] The fifth component includes: the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, main chiller chilled water bypass valve of the first chiller 111a, and the cooling tower, cooling pump, cooling bypass valve, free cooling chilled water outlet valve, main chiller chilled water outlet valve of the second chiller 111b; or,

[0141] The fifth component includes: the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, main chiller chilled water bypass valve of the second chiller 111b, and the cooling tower, cooling pump, cooling bypass valve, free cooling chilled water outlet valve, main chiller chilled water outlet valve of the first chiller 111a.

[0142] Among them, the fourth operation mode can represent the dual-chiller series free cooling mode, that is, the two chillers are connected in series and in the cooling refrigeration mode.

[0143] As an example, please refer to Figure 2 , for the two free cooling modules, when operating in the dual-chiller series free cooling mode, turn on the cooling tower 30a, cooling pump 103a, cooling bypass valve 105a, chilled water pump 106a, chilled water inlet valve 107a, free cooling chilled water outlet valve 109a, main chiller chilled water bypass valve 1010a; turn on the cooling tower 30b, cooling pump 103b, cooling bypass valve 105b, free cooling chilled water outlet valve 109b, main chiller chilled water outlet valve 1011b. In the above cases, the components not mentioned can be in the closed state.

[0144] Or, turn on the cooling tower 30b, cooling pump 103b, cooling bypass valve 105b, chilled water pump 106b, chilled water inlet valve 107b, free cooling chilled water outlet valve 109b, main chiller chilled water bypass valve 1010b; turn on the cooling tower 3a0, cooling pump 103a, cooling bypass valve 105a, free cooling chilled water outlet valve 109a, main chiller chilled water outlet valve 1011a. In the above cases, the components not mentioned can be in the closed state.

[0145] In addition, the chilled water pump and the waterway valves are the core components for supplying cold energy from the cold source equipment to the liquid-cooled cabinet. The dual-chiller series free cooling mode enables the cold source equipment to have the function of one standby for the chilled water pump and the main chiller chilled water outlet valve. If the chilled water pump 106a or the main chiller chilled water outlet valve 1011b fails, when the controller receives the operation command of the dual-chiller series free cooling mode, it can still operate in this way: turn on the cooling tower 30b, cooling pump 103b, cooling bypass valve 105b, chilled water pump 106b, chilled water inlet valve 107b, free cooling chilled water outlet valve 109b, main chiller chilled water bypass valve 1010b; turn on the cooling tower 30a, cooling pump 103a, cooling bypass valve 105a, free cooling chilled water outlet valve 109a, main chiller chilled water outlet valve 1011a.

[0146] Similarly, when a failure occurs in the chilled water pump 106b or the main chiller chilled water outlet valve 1011a, when the controller receives the operation command for the dual-unit series natural cooling mode, it can still operate in this way: turn on the cooling tower 30a, the cooling water pump 103a, the cooling bypass valve 105a, the chilled water pump 106a, the chilled water inlet valve 107a, the natural cooling chilled water outlet valve 109a, and the main chiller chilled water bypass valve 1010a; turn on the cooling tower 30b, the cooling water pump 103b, the cooling bypass valve 105b, the natural cooling chilled water outlet valve 109b, and the main chiller chilled water outlet valve 1011b.

[0147] It can be understood that in the above cases, in the dual-unit series natural cooling mode, the two natural cooling modules are turned on simultaneously, enabling the cold source equipment to enter the natural cooling mode earlier and increasing the proportion of the annual natural cooling duration. It is applicable to scenarios where the outdoor temperature is relatively low and the server cooling demand is high, thus improving the matching degree between the operation mode of the cold source equipment and the scenarios with a relatively low outdoor temperature and high server cooling demand.

[0148] In some cases in the above application scenarios, to solve the technical problem of the low matching degree between the operation mode and the usage scenario, when the target operation mode is the fifth operation mode, the sixth component and the seventh component are in the on state, and the turning-on moment of the sixth component is earlier than that of the seventh component.

[0149] The sixth component includes the cooling tower, the cooling water pump, the cooling water inlet valve, the chilled water pump, the chilled water inlet valve, the natural cooling chilled water outlet valve, and the main chiller chilled water bypass valve of the first chiller 111a, as well as the natural cooling chilled water outlet valve, the main chiller chilled water outlet valve, the cooling tower, the cooling water pump, and the cooling water inlet valve of the second chiller 111b; the seventh component includes the main unit of the first chiller 111a and the main unit of the second component; or,

[0150] The sixth component includes the cooling tower, the cooling water pump, the cooling water inlet valve, the chilled water pump, the chilled water inlet valve, the natural cooling chilled water outlet valve, and the main chiller chilled water bypass valve of the second chiller 111b, as well as the natural cooling chilled water outlet valve, the main chiller chilled water outlet valve, the cooling tower, the cooling water pump, and the cooling water inlet valve of the first chiller 111a; the seventh component includes the main unit of the first chiller 111a and the main unit of the second component.

[0151] Among them, the fifth operation mode can represent the dual-unit series refrigeration mode, that is, two chillers are connected in series and in the refrigeration mode of chilling.

[0152] As an example, please refer to Figure 2 , in Figure 2In this case, the cooling tower 30a, cooling pump 103a, cooling inlet valve 104a, chiller pump 106a, chiller inlet valve 107a, natural cooling chiller outlet valve 109a, main chiller bypass valve 1010a, natural cooling chiller outlet valve 109b, main chiller outlet valve 1011b, cooling tower 30b, cooling pump 103b, and cooling inlet valve 104b can be turned on in advance, and then the main units 101a and 101b are started. In the above situations, the components not mentioned can be in the closed state.

[0153] In addition, the chiller pump and the waterway valves are the core components for supplying cold energy from the cold source equipment to the liquid-cooled cabinet. The dual-unit series refrigeration mode enables the cold source equipment to have the function of one chiller pump and one main chiller outlet valve in standby. If the chiller pump 106b or the main chiller outlet valve 1011a fails, when the controller receives the operation command of the dual-unit series refrigeration mode, it can still operate in this way.

[0154] Or, the cooling tower 30b, cooling pump 103b, cooling inlet valve 104b, chiller pump 106b, chiller inlet valve 107b, natural cooling chiller outlet valve 109b, main chiller bypass valve 1010b, natural cooling chiller outlet valve 109a, main chiller outlet valve 1011a, cooling tower 30a, cooling pump 103a, and cooling inlet valve 104b can be turned on in advance, and then the main units 101a and 101b are started. In the above situations, the components not mentioned can be in the closed state.

[0155] In addition, the dual-unit series refrigeration mode enables the cold source equipment to have the function of one chiller pump and one main chiller outlet valve in standby. If the chiller pump 106a or the main chiller outlet valve 1011b fails, when the controller receives the operation command of the dual-unit series refrigeration mode, it can still operate in this way.

[0156] It can be understood that in the above situations, in the dual-unit series refrigeration mode, two main units can be turned on simultaneously, greatly increasing the temperature difference of the refrigerant in the cold source equipment, and being able to be compatible with more application scenarios of liquid cooling, air cooling, and air-liquid hybrid cooling. It is suitable for scenarios with high outdoor temperature and high server cooling requirements, thus improving the matching degree between the operation mode of the cold source equipment and the scenarios with high outdoor temperature and high server cooling requirements.

[0157] In some cases of the above application scenarios, to solve the technical problem of low matching degree between the operation mode and the usage scenario, when the target operation mode is the sixth operation mode, the eighth component and the ninth component are in the on state, and the opening time of the eighth component is earlier than the opening time of the ninth component.

[0158] The eighth component includes the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, main chiller chilled water bypass valve of the first chiller 111a, and the cooling tower, cooling pump, cooling bypass valve, free cooling chilled water outlet valve, main chiller chilled water outlet valve of the second chiller 111b; the ninth component includes the main chiller of the first chiller 111a and the main chiller of the second chiller 111b; or,

[0159] The eighth component includes the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, main chiller chilled water bypass valve of the second chiller 111b, and the cooling tower, cooling pump, cooling bypass valve, free cooling chilled water outlet valve, main chiller chilled water outlet valve of the first chiller 111a; the ninth component includes the main chiller of the first chiller 111a and the main chiller of the second chiller 111b.

[0160] Among them, the sixth operation mode can represent a dual-chiller series hybrid cooling mode, that is, a single chiller is connected in series and operates in a cooling mode mixed with a refrigeration mode.

[0161] As an example, please refer to Figure 2 In Figure 2 , the cooling tower 30a, cooling pump 103a, cooling bypass valve 105a, chilled water pump 106a, chilled water inlet valve 107a, free cooling chilled water outlet valve 109a, main chiller chilled water bypass valve 1010a, cooling tower 30b, cooling pump 103b, cooling bypass valve 105b, free cooling chilled water outlet valve 109b, and main chiller chilled water outlet valve 1011b can be turned on in advance, and then the main chillers 101a and 101b are started. In the above situation, the components not mentioned can be in the closed state.

[0162] In addition, the chilled water pump and the waterway valves are the core components for supplying cold energy from the cold source equipment to the liquid-cooled cabinet. The dual-chiller series hybrid cooling mode enables the cold source equipment to have a function of one standby for the chilled water pump and the main chiller chilled water outlet valve. If the chilled water pump 106b or the main chiller chilled water outlet valve 1011a fails, when the controller receives the operation command of the dual-chiller series hybrid cooling mode, it can still operate in this way.

[0163] Or, the cooling tower 30b, cooling pump 103b, cooling bypass valve 105b, chilled water pump 106b, chilled water inlet valve 107b, free cooling chilled water outlet valve 109b, main chiller chilled water bypass valve 1010b, cooling tower 30a, cooling pump 103a, cooling bypass valve 105a, free cooling chilled water outlet valve 109a, and main chiller chilled water outlet valve 1011a can be turned on in advance, and then the main chillers 101a and 101b are started. In the above situation, the components not mentioned can be in the closed state.

[0164] Additionally, the chilled water pump and the waterway valve are the core components that supply cold energy from the cold source equipment to the liquid-cooled cabinet. The dual-machine series hybrid cooling mode enables the cold source equipment to have the function of one standby for one of the chilled water pump 106a or the main engine chilled water outlet valve 1011b. If the chilled water pump 106a or the main engine chilled water outlet valve 1011b fails, when the controller receives the operation command of the dual-machine series hybrid cooling mode, it can still operate in this way. In the above cases, the components not mentioned can be in the closed state.

[0165] It can be understood that in the above cases, in the dual-machine series hybrid cooling mode, the cold source equipment can make more full use of the natural cold source, improving the operation economy. It is applicable to the scenarios where the outdoor temperature is low and the server cooling demand is high, thus improving the matching degree between the operation mode of the cold source equipment and the scenarios with low outdoor temperature and high server cooling demand.

[0166] In some cases of the above application scenarios, to solve the technical problem of low matching degree between the operation mode and the usage scenario, when the target operation mode is the seventh operation mode, the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, natural cold chilled water outlet valve, and main engine chilled water outlet valve of the first chiller 111a are turned on, and the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, natural cold chilled water outlet valve, and main engine chilled water outlet valve of the second chiller 111b are turned on.

[0167] Among them, the seventh operation mode can represent the dual-machine parallel natural cold mode, that is, the two chillers are connected in parallel and in the cooling refrigeration mode.

[0168] As an example, please refer to Figure 2 , in Figure 2 , when the two natural cold modules operate in the dual-machine parallel natural cold mode, the cooling tower 30a, cooling pump 103a, cooling bypass valve 105a, chilled water pump 106a, chilled water inlet valve 107a, natural cold chilled water outlet valve 109a, and main engine chilled water outlet valve 1011a are turned on; the cooling tower 30b, cooling pump 103b, cooling bypass valve 105b, chilled water pump 106b, chilled water inlet valve 107b, natural cold chilled water outlet valve 109b, and main engine chilled water outlet valve 1011b are turned on. In the above cases, the components not mentioned can be in the closed state.

[0169] It can be understood that in the above cases, in the dual-machine parallel natural cold mode, the two natural cold modules can be turned on simultaneously, enabling the cold source to enter the natural cooling mode earlier and increasing the proportion of the annual natural cooling duration. It is applicable to the scenarios where the outdoor temperature is relatively low and the server cooling demand is high, thus improving the matching degree between the operation mode of the cold source equipment and the scenarios with relatively low outdoor temperature and high server cooling demand.

[0170] In some cases of the above application scenarios, to solve the technical problem of low matching degree between the operating mode and the usage scenario, when the target operating mode is the eighth operating mode, the tenth component and the eleventh component are in the on state, and the on moment of the tenth component is earlier than that of the eleventh component.

[0171] The tenth component includes the cooling tower, cooling pump, cooling inlet valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, main chiller chilled water outlet valve of the first chiller 111a, and the cooling tower, cooling pump, cooling inlet valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, main chiller chilled water outlet valve of the second chiller 111b;

[0172] The eleventh component includes the main chiller of the first chiller 111a and the main chiller of the second chiller 111b.

[0173] Among them, the eighth operating mode can represent a dual chiller parallel refrigeration mode, that is, two chillers are connected in parallel and in the refrigeration mode of freezing.

[0174] As an example, please refer to Figure 2 , in Figure 2 , the cooling tower 30a, cooling pump 103a, cooling inlet valve 104a, chilled water pump 106a, chilled water inlet valve 107a, free cooling chilled water outlet valve 109a, main chiller chilled water outlet valve 1011a, cooling tower 30b, cooling pump 103b, cooling inlet valve 104b, chilled water pump 106b, chilled water inlet valve 107b, free cooling chilled water outlet valve 109b, main chiller chilled water outlet valve 1011b can be turned on in advance, and then the main chillers 101a and 101b are started. In the above situation, the components not mentioned can be in the off state.

[0175] It can be understood that in the above situation, in the dual chiller parallel refrigeration mode, the two main chillers can be turned on at the same time to enable the cold source equipment to operate in a hot standby mode. When one of the main chillers fails, there is no need to switch chillers, and the other main chiller can be loaded in time to meet the usage requirements. It is applicable to scenarios where the outdoor temperature is high and the server cooling demand is high, so the matching degree between the operating mode of the cold source equipment and the scenario where the outdoor temperature is high and the server cooling demand is high can be improved.

[0176] In some cases of the above application scenarios, to solve the technical problem of low matching degree between the operating mode and the usage scenario, when the target operating mode is the ninth operating mode, the twelfth component and the thirteenth component are in the on state, and the on moment of the twelfth component is earlier than that of the thirteenth component.

[0177] The twelfth component includes the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, main unit chilled water outlet valve of the first chiller 111a, and the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, free cooling chilled water outlet valve, main unit chilled water outlet valve of the second chiller 111b; the thirteenth component includes the main units of the first chiller 111a and the second chiller 111b.

[0178] Among them, the ninth operating mode can represent a dual-chiller parallel hybrid cooling mode, that is, two chillers are connected in parallel and in a refrigeration mode of mixing cooling and chilling.

[0179] As an example, please refer to Figure 2 , in Figure 2 , when the main unit 101a and the free cooling module 102a start and operate in the single-chiller hybrid cooling mode, the main unit 101b and the free cooling module 102b also start and operate in the single-chiller hybrid cooling mode, then the dual-chiller parallel hybrid cooling mode can be run.

[0180] It can be understood that in the above situation, in the dual-chiller parallel hybrid cooling mode, the cold source equipment can make more full use of the free cooling source, improving the operating economy. It is applicable to scenarios where the outdoor temperature is low and the server cooling demand is high, thus improving the matching degree between the operating mode of the cold source equipment and the scenario of low outdoor temperature and high server cooling demand.

[0181] In some application scenarios of the above optional implementation manners, to solve the technical problem of how to improve the richness of the operating modes of the cold source equipment, as Figure 4 shown, the free cooling module includes a cooling-side heat exchanger 5 and a chilled water-side heat exchanger 6.

[0182] The cooling-side heat exchanger 5 is respectively connected to the main unit, the cooling inlet valve, and the cooling bypass valve.

[0183] The chilled water-side heat exchanger 6 is respectively connected to the chilled water inlet valve, the free cooling chilled water bypass valve, and the free cooling chilled water outlet valve.

[0184] It can be understood that in the above application scenario, at least two refrigeration modes can be achieved through each free cooling module, thereby improving the richness of the operating modes of the cold source equipment.

[0185] In some optional implementation manners of this embodiment, to solve the technical problem of how to improve the richness of the operating modes of the cold source equipment, each chiller includes three refrigeration modes: a cooling mode, a chilling mode, and a hybrid mode.

[0186] When the target operating mode is the first operating mode, the number of refrigerators in the working state is one, the target connection method represents single-machine connection, and the target refrigeration mode represents the cooling mode.

[0187] Among them, the first operating mode can represent the single-machine natural cooling mode, that is, a single refrigerator is in the cooling refrigeration mode.

[0188] When the target operating mode is the second operating mode, the number of refrigerators in the working state is one, the target connection method represents single-machine connection, and the target refrigeration mode represents the freezing mode.

[0189] Among them, the second operating mode can represent the single-machine refrigeration mode, that is, a single refrigerator is in the freezing refrigeration mode.

[0190] When the target operating mode is the third operating mode, the number of refrigerators in the working state is one, the target connection method represents single-machine connection, and the target refrigeration mode represents the hybrid mode.

[0191] Among them, the third operating mode can represent the single-machine hybrid cooling mode, that is, a single refrigerator is in the refrigeration mode of mixing the cooling mode and the freezing mode.

[0192] When the target operating mode is the fourth operating mode, the number of refrigerators in the working state is two, the target connection method represents double-machine series connection, and the target refrigeration mode represents the cooling mode.

[0193] Among them, the fourth operating mode can represent the double-machine series natural cooling mode, that is, two refrigerators are connected in series and in the cooling refrigeration mode.

[0194] When the target operating mode is the fifth operating mode, the number of refrigerators in the working state is two, the target connection method represents double-machine series connection, and the target refrigeration mode represents the freezing mode.

[0195] Among them, the fifth operating mode can represent the double-machine series refrigeration mode, that is, two refrigerators are connected in series and in the freezing refrigeration mode.

[0196] When the target operating mode is the sixth operating mode, the number of refrigerators in the working state is two, the target connection method represents double-machine series connection, and the target refrigeration mode represents the hybrid mode.

[0197] Among them, the sixth operating mode can represent the double-machine series hybrid cooling mode, that is, a single refrigerator is connected in series and in the refrigeration mode of mixing the cooling mode and the freezing mode.

[0198] When the target operating mode is the seventh operating mode, the number of refrigerating machines in the working state is two, the target connection mode represents dual-unit parallel connection, and the target refrigeration mode represents the cooling mode.

[0199] Among them, the seventh operating mode can represent the dual-unit parallel natural cooling mode, that is, two refrigerating machines are connected in parallel and in the cooling refrigeration mode.

[0200] When the target operating mode is the eighth operating mode, the number of refrigerating machines in the working state is two, the target connection mode represents dual-unit parallel connection, and the target refrigeration mode represents the freezing mode.

[0201] Among them, the eighth operating mode can represent the dual-unit parallel refrigeration mode, that is, two refrigerating machines are connected in parallel and in the freezing refrigeration mode.

[0202] When the target operating mode is the ninth operating mode, the number of refrigerating machines in the working state is two, the target connection mode represents dual-unit parallel connection, and the target refrigeration mode represents the mixed mode.

[0203] Among them, the ninth operating mode can represent the dual-unit parallel mixed cooling mode, that is, two refrigerating machines are connected in parallel and in the refrigeration mode of mixing cooling and freezing.

[0204] It can be understood that in the above optional implementation manners, nine operating modes of the cold source device can be realized, and thus different refrigeration strategies can be adopted according to different usage scenarios, further improving the richness of the operating modes of the cold source device and the matching degree between the operating modes and the usage scenarios.

[0205] In some optional implementation manners of this embodiment, to solve the technical problem of improving the stability of the cold source device, the cold source device is integrally provided.

[0206] Here, the refrigeration host, chilled water pump, cooling water pump, water system heat exchanger, water system valve, cooling tower, cooling water pump, etc. in a single refrigeration unit, and the dual main and standby units are integrally designed in a container or frame structure, so as to achieve a high degree of integrated integration.

[0207] It can be understood that in the above optional implementation manners, since the cold source device is integrally provided, the stability of the cold source device can be improved.

[0208] The cold source device provided by the embodiment of the present application includes a refrigeration unit and a controller; at least two refrigerators are included in the refrigeration unit; each refrigerator in the refrigeration unit is connected; the number of refrigeration modes of the refrigerators in the refrigeration unit is greater than or equal to two; the controller is connected to the refrigerators in the refrigeration unit; the controller is configured to: control the refrigerators in the refrigeration unit in the working state to refrigerate through a target connection mode and a target refrigeration mode, so that the cold source device is in a target operation mode; wherein, the target refrigeration mode is any one of at least two refrigeration modes of the refrigerator. Thus, since the cold source device includes at least two refrigerators, each refrigerator has at least two refrigeration modes, and the refrigerators can be connected in a variety of different ways, in this way, by controlling different combinations of the number, refrigeration mode and connection mode of the refrigerators in the working state, multiple operation modes of the cold source device can be realized, and then different refrigeration strategies can be adopted according to different usage scenarios, improving the richness of the operation modes of the cold source device and the matching degree between the operation mode and the usage scenario.

[0209] The following is an exemplary description of the embodiment of the present application. However, it should be noted that the following content is only used to understand the technical solution of the embodiment of the present application and does not constitute a limitation on the protection scope of the embodiment of the present application.

[0210] As the server heat density is getting higher and higher, liquid cooling has become the mainstream trend of efficient server cooling. To ensure uninterrupted cooling throughout the year, the computer room usually adopts the operation of main and standby refrigeration units. The energy-saving economy and working stability of the main and standby refrigeration units are crucial for the efficient and energy-saving operation of the data center. At present, the main and standby refrigeration units are two independent individuals, with their respective systems and controllers being independent of each other. A group control system needs to be configured to communicate and connect to schedule the operation of the units. The mode is single, and the effect in terms of collaborative efficiency, stable energy saving and operation is not ideal.

[0211] The following technical problems are solved by this patent

[0212] At present, the main and standby refrigeration units in the data center computer room are two independent individuals, with their respective systems and controllers being independent of each other. A group control system needs to be configured to communicate and connect to schedule the operation of the units. The mode is single, and the effect in terms of collaborative efficiency, stable energy saving and operation is not ideal.

[0213] The invention point of this invention patent lies in:

[0214] Cold source equipment and its system, which can double the refrigeration output range in single-machine and dual-machine modes, meet the low racking rate in the initial stage of data center construction and the requirements of later transformation and expansion; in the series operation mode, the dual-machine chilled water pumps and valves are used as backups for each other, supporting online maintenance and improving the reliability and stability of the cold source; in the single-machine free cooling mode, the system operation range is broadened, and the dual-machine parallel / series free cooling mode enables earlier entry into the free cooling mode, increasing the annual proportion of free cooling duration; in the single-machine hybrid cooling mode and dual-machine parallel / series hybrid cooling mode, the natural cold source can be utilized more fully, enhancing the energy-saving economy of operation; in the dual-machine series refrigeration mode, the temperature difference of the refrigerant in the cold source equipment is significantly increased, and it can be compatible with more application scenarios such as liquid cooling, air cooling, and air-liquid hybrid.

[0215] As Figure 2 shown, the cold source system includes: the cold source equipment 10, the main unit 101a, the free cooling module 102a, the cooling pump 103a, the cooling inlet valve 104a, the cooling bypass valve 105a, the chilled water pump 106a, the chilled water inlet valve 107a, the free cooling chilled water bypass valve 108a, the free cooling chilled water outlet valve 109a, the main unit chilled water bypass valve 1010a, the main unit chilled water outlet valve 1011a; the main unit 101b, the free cooling module 102b, the cooling pump 103b, the cooling inlet valve 104b, the cooling bypass valve 105b, the chilled water pump 106b, the chilled water inlet valve 107b, the free cooling chilled water bypass valve 108b, the free cooling chilled water outlet valve 109b, the main unit chilled water bypass valve 1010b, the main unit chilled water outlet valve 1011b; the liquid-cooled cabinet 20, the cooling tower 30a, and the cooling tower 30b.

[0216] As Figure 3 shown, the main unit includes a compressor 1, an evaporator 2, a throttling device 3, and a condenser 4.

[0217] As Figure 4 shown, the free cooling module includes a cooling-side heat exchanger 5 and a chilled water-side heat exchanger 6.

[0218] The integrated high-efficiency energy-saving cold source system of this solution consists of cold source equipment, cooling towers, liquid-cooled cabinets, and system connection-related pipelines. A set of controllers is built into the cold source equipment to control all loads in the cold source equipment, cooling towers, and liquid-cooled cabinets.

[0219] Cold source equipment and its system can operate in 9 major operating modes according to the server cooling demand and natural environmental conditions. The refrigeration output range of the single-machine and double-machine modes is doubled, meeting the low racking rate in the initial stage of data center construction and the requirements for later transformation and expansion; the parallel operation mode enables the two machines to be used as backups for each other, supports online maintenance, and improves the reliability and stability of the cold source; the single-machine free cooling mode broadens the operating range of the system, and the double-machine parallel / series free cooling mode enables the system to enter the free cooling mode earlier, increasing the proportion of the annual free cooling duration and making it more energy-efficient; the single-machine hybrid cooling mode and the double-machine parallel / series hybrid cooling mode can make more full use of the free cooling source and improve the energy-saving economy of operation; the double-machine series refrigeration mode greatly increases the temperature difference of the refrigerant in the cold source equipment and can be compatible with more application scenarios such as liquid cooling, air cooling, and air-liquid hybrid.

[0220] This cold source equipment and its system have the functions of multi-mode and flexible control operation according to the server cooling demand and natural environmental conditions, improving the energy-saving control efficiency of the data center refrigeration system:

[0221] ① Single-machine free cooling mode (i.e., the above-mentioned first operating mode): One of the free cooling modules 102a and 102b in the cold source equipment is separately turned on, widening the lower limit of the cooling capacity output range and meeting the usage requirements of low racking rate in the initial stage of data center construction. It is applicable to scenarios where the outdoor temperature is relatively low and the server cooling demand is low:

[0222] For the free cooling module 102a, when operating in the single-machine free cooling mode, turn on the cooling tower 30a, cooling pump 103a, cooling bypass valve 105a, refrigeration pump 106a, refrigeration inlet valve 107a, free cooling refrigeration outlet valve 109a, and main engine refrigeration outlet valve 1011a.

[0223] For the free cooling module 102b, when operating in the single-machine free cooling mode, turn on the cooling tower 30b, cooling pump 103b, cooling bypass valve 105b, refrigeration pump 106b, refrigeration inlet valve 107b, free cooling refrigeration outlet valve 109b, and main engine refrigeration outlet valve 1011b.

[0224] The single-machine free cooling mode contains the free cooling operation mode of the free cooling module. Each module can be enabled according to the demand, and the refrigeration effects are the same. The main point is that the free cooling modules can be used as backups for each other and for online maintenance in the single-machine free cooling mode. For example, when the free cooling module 102a fails or needs to be maintained online and the single-machine free cooling mode still needs to be operated, the free cooling module 102b can be enabled.

[0225] ② Double-machine parallel free cooling mode (i.e., the above-mentioned seventh operating mode): The free cooling modules 102a and 102b are turned on simultaneously, enabling the cold source to enter the free cooling mode earlier and increasing the proportion of the annual free cooling duration. It is applicable to scenarios where the outdoor temperature is relatively low and the server cooling demand is high:

[0226] For the natural cooling modules 102a and 102b, when operating in the dual-unit parallel natural cooling mode, the cooling towers 30a, cooling pumps 103a, cooling bypass valves 105a, chilled water pumps 106a, chilled water inlet valves 107a, natural cooling chilled water outlet valves 109a, and main chiller chilled water outlet valves 1011a are opened; the cooling towers 30b, cooling pumps 103b, cooling bypass valves 105b, chilled water pumps 106b, chilled water inlet valves 107b, natural cooling chilled water outlet valves 109b, and main chiller chilled water outlet valves 1011b are opened.

[0227] ③ Dual-unit series natural cooling mode (i.e., the above-mentioned fourth operating mode): The natural cooling modules 102a and 102b are turned on simultaneously, enabling the cold source equipment to enter the natural cooling mode earlier and increasing the proportion of the annual natural cooling duration. It is applicable to scenarios where the outdoor temperature is relatively low and the server cooling demand is high:

[0228] For the natural cooling modules 102a and 102b, when operating in the dual-unit series natural cooling mode, the cooling towers 30a, cooling pumps 103a, cooling bypass valves 105a, chilled water pumps 106a, chilled water inlet valves 107a, natural cooling chilled water outlet valves 109a, and main chiller bypass valves 1010a are opened; the cooling towers 30b, cooling pumps 103b, cooling bypass valves 105b, natural cooling chilled water outlet valves 109b, and main chiller chilled water outlet valves 1011b are opened.

[0229] Alternatively, the cooling towers 30b, cooling pumps 103b, cooling bypass valves 105b, chilled water pumps 106b, chilled water inlet valves 107b, natural cooling chilled water outlet valves 109b, and main chiller bypass valves 1010b are opened; the cooling towers 30a, cooling pumps 103a, cooling bypass valves 105a, natural cooling chilled water outlet valves 109a, and main chiller chilled water outlet valves 1011a are opened.

[0230] In addition, the chilled water pumps and waterway valves are the core components for supplying cold energy from the cold source equipment to the liquid-cooled cabinets. The dual-unit series natural cooling mode enables the cold source equipment to have a one-use-one-backup function for the chilled water pumps and main chiller chilled water outlet valves. If the chilled water pump 106a or the main chiller chilled water outlet valve 1011b fails, when the controller receives the operation command for the dual-unit series natural cooling mode, it can still operate in this way: the cooling towers 30b, cooling pumps 103b, cooling bypass valves 105b, chilled water pumps 106b, chilled water inlet valves 107b, natural cooling chilled water outlet valves 109b, and main chiller bypass valves 1010b are opened; the cooling towers 30a, cooling pumps 103a, cooling bypass valves 105a, natural cooling chilled water outlet valves 109a, and main chiller chilled water outlet valves 1011a are opened.

[0231] Similarly, if the freezing pump 106b or the main unit freezing outlet valve 1011a fails, when the controller receives a command to operate in the dual-machine series natural cooling mode, it can still operate in this way: open the cooling tower 30a, the cooling pump 103a, the cooling bypass valve 105a, the freezing pump 106a, the freezing inlet valve 107a, the natural cooling freezing outlet valve 109a, and the main unit freezing bypass valve 1010a; open the cooling tower 30b, the cooling pump 103b, the cooling bypass valve 105b, the natural cooling freezing outlet valve 109b, and the main unit freezing outlet valve 1011b.

[0232] The series connection means that the chilled water first passes through a, then b, and finally is delivered to the end, and the chilled water is cooled step by step;

[0233] Parallel connection means that the chilled water passes through a and b at the same time, and is finally transported to the end together, and the chilled water is cooled at the same time;

[0234] There are differences in the energy efficiency of the entire system between series and parallel connections, and the better operation can be selected according to the actual energy efficiency situation; series and parallel connections have different requirements for the chilled water pumps in the entire system. When the chilled water pump head is large, it is more suitable for running in series mode, and when the chilled water pump head is small, it is more suitable for running in parallel mode, and the control operation is highly flexible.

[0235] ④ Single-machine hybrid cooling mode (also known as the third operating mode): Turn on one of the host computers 101a and 101b, and turn on one of the natural cooling modules 102a and 102b to run the single-machine hybrid cooling mode, allowing the cooling source equipment to make full use of the natural cooling source and improve operating economy. This is suitable for scenarios with low outdoor temperatures and low server cooling requirements:

[0236] For the main unit 101a and the natural cooling module 102a, when operating the single-machine mixed cooling mode, first open the cooling tower 30a, the cooling pump 103a, the cooling bypass valve 105a, the freezing pump 106a, the freezing inlet valve 107a, the natural cooling freezing outlet valve 109a, and the main unit freezing outlet valve 1011a in advance, and then open the main unit 101a.

[0237] For the main unit 101a and the natural cooling module 102b, when running the single-machine mixed cooling mode, first open the cooling tower 30b, the cooling pump 103b, the cooling bypass valve 105b, the freezing pump 106b, the freezing inlet valve 107b, the natural cooling freezing bypass valve 108b, the natural cooling freezing outlet valve 109a, the main unit freezing outlet valve 1011a, the cooling tower 30a, the cooling pump 103a, and the cooling inlet valve 104a in advance, and then open the main unit 101a.

[0238] When running the single-unit hybrid cooling mode for the host 101b and the natural cooling module 102b, first turn on the cooling tower 30b, the cooling pump 103b, the cooling bypass valve 105b, the chilled water pump 106b, the chilled water inlet valve 107b, the natural cooling chilled water outlet valve 109b, and the host chilled water outlet valve 1011b in advance, and then turn on the host 101b.

[0239] When running the single-unit hybrid cooling mode for the host 101b and the natural cooling module 102a, first turn on the cooling tower 30a, the cooling pump 103a, the cooling bypass valve 105a, the chilled water pump 106a, the chilled water inlet valve 107a, the natural cooling chilled water bypass valve 108a, the natural cooling chilled water outlet valve 109b, the host chilled water outlet valve 1011b, the cooling tower 30b, the cooling pump 103b, and the cooling water inlet valve 104b in advance, and then turn on the host 101b.

[0240] There are clear requirements for the opening sequence of each component. For example, "first turn on the cooling tower 30a, the cooling pump 103a, the cooling bypass valve 105a, the chilled water pump 106a, the chilled water inlet valve 107a, the natural cooling chilled water outlet valve 109a, and the host chilled water outlet valve 1011a in advance" means that these components need to be turned on simultaneously. For example, "then turn on the host 101a" means that the host 101a can only be turned on after all the previous components have been turned on.

[0241] Before starting the refrigeration host, each auxiliary component in the entire system needs to be turned on as required so that the refrigeration host can start safely.

[0242] ⑤ Dual-unit parallel hybrid cooling mode (i.e., the above-mentioned ninth operating mode): It enables the cold source equipment to make more full use of the natural cold source and improves the operating economy. It is applicable to scenarios where the outdoor temperature is low and the server cooling demand is high:

[0243] When the host 101a and the natural cooling module 102a are started and operated in the single-unit hybrid cooling mode, and the host 101b and the natural cooling module 102b are also started and operated in the single-unit hybrid cooling mode, the dual-unit parallel hybrid cooling mode can be run.

[0244] ⑥ Dual-unit series hybrid cooling mode (i.e., the above-mentioned sixth operating mode): It enables the cold source equipment to make more full use of the natural cold source and improves the operating economy. It is applicable to scenarios where the outdoor temperature is low and the server cooling demand is high:

[0245] First, turn on the cooling tower 30a, cooling pump 103a, cooling bypass valve 105a, chiller pump 106a, chilled water inlet valve 107a, natural cooling chilled water outlet valve 109a, main chiller bypass valve 1010a, cooling tower 30b, cooling pump 103b, cooling bypass valve 105b, natural cooling chilled water outlet valve 109b, and main chiller outlet valve 1011b in advance, and then start the main chiller 101a and main chiller 101b. Additionally, the chiller pump and waterway valves are the core components that supply cooling capacity from the cold source equipment to the liquid cooling cabinet. The dual-unit series hybrid cooling mode enables the cold source equipment to have the function of one standby for one of the chiller pump and the main chiller outlet valve. If the chiller pump 106b or the main chiller outlet valve 1011a fails, when the controller receives the operation command of the dual-unit series hybrid cooling mode, it can still operate in this way.

[0246] Alternatively, first turn on the cooling tower 30b, cooling pump 103b, cooling bypass valve 105b, chiller pump 106b, chilled water inlet valve 107b, natural cooling chilled water outlet valve 109b, main chiller bypass valve 1010b, cooling tower 30a, cooling pump 103a, cooling bypass valve 105a, natural cooling chilled water outlet valve 109a, and main chiller outlet valve 1011a in advance, and then start the main chiller 101a and main chiller 101b. Additionally, the chiller pump and waterway valves are the core components that supply cooling capacity from the cold source equipment to the liquid cooling cabinet. The dual-unit series hybrid cooling mode enables the cold source equipment to have the function of one standby for one of the chiller pump and the main chiller outlet valve. If the chiller pump 106a or the main chiller outlet valve 1011b fails, when the controller receives the operation command of the dual-unit series hybrid cooling mode, it can still operate in this way.

[0247] Here, the specific startup can be selected according to the actual situation. When components such as the cooling bypass valve 105a or the chiller pump 106a in the integrated cold source fail or need on-line maintenance, the second dual-unit series hybrid cooling mode can be selected. The two are mutually backup, redundant, and highly flexible.

[0248] ⑦ Single-unit refrigeration mode (i.e., the above-mentioned second operation mode): Turn on one of the main chillers 101a and 101b to enable the cold source equipment to achieve the function of one standby for one in single-unit refrigeration, and be able to switch to the standby unit for single-unit refrigeration when needed. It is applicable to scenarios where the outdoor temperature is high and the server cooling demand is low:

[0249] For the main chiller 101a, when operating in the single-unit refrigeration mode, first turn on the cooling tower 30a, cooling pump 103a, cooling water inlet valve 104a, chiller pump 106a, chilled water inlet valve 107a, natural cooling chilled water outlet valve 109a, and main chiller outlet valve 1011a in advance, and then start the main chiller 101a.

[0250] For the host 101b, when running in the single-unit refrigeration mode, first turn on the cooling tower 30b, cooling pump 103b, cooling inlet valve 104b, chilled water pump 106b, chilled water inlet valve 107b, natural cooling chilled water outlet valve 109b, and host chilled water outlet valve 1011b in advance, and then start the host 101b.

[0251] ⑧ Dual-unit parallel refrigeration mode (i.e., the above-mentioned eighth operating mode): Turn on the host 101a and the host 101b simultaneously to enable the cold source equipment to operate in a hot standby mode. When one of the hosts fails, there is no need to switch machines, and the other host can be loaded in time to meet the usage requirements. It is applicable to scenarios where the outdoor temperature is high and the server cooling demand is high:

[0252] First turn on the cooling tower 30a, cooling pump 103a, cooling inlet valve 104a, chilled water pump 106a, chilled water inlet valve 107a, natural cooling chilled water outlet valve 109a, host chilled water outlet valve 1011a, cooling tower 30b, cooling pump 103b, cooling inlet valve 104b, chilled water pump 106b, chilled water inlet valve 107b, natural cooling chilled water outlet valve 109b, and host chilled water outlet valve 1011b in advance, and then start the host 101a and the host 101b.

[0253] ⑨ Dual-unit series refrigeration mode (i.e., the above-mentioned fifth operating mode): Turn on the host 101a and the host 101b simultaneously to significantly increase the temperature difference of the refrigerant in the cold source equipment, and it can be compatible with more application scenarios of liquid cooling, air cooling, and air-liquid hybrid. It is applicable to scenarios where the outdoor temperature is high and the server cooling demand is high:

[0254] First turn on the cooling tower 30a, cooling pump 103a, cooling inlet valve 104a, chilled water pump 106a, chilled water inlet valve 107a, natural cooling chilled water outlet valve 109a, host chilled water bypass valve 1010a, natural cooling chilled water outlet valve 109b, host chilled water outlet valve 1011b, cooling tower 30b, cooling pump 103b, and cooling inlet valve 104b in advance, and then start the host 101a and the host 101b. Additionally, the chilled water pump and the waterway valves are the core components for supplying cold energy from the cold source equipment to the liquid-cooled cabinet. The dual-unit series refrigeration mode enables the cold source equipment to have the function of one standby for one use for the chilled water pump and the host chilled water outlet valve; if the chilled water pump 106b or the host chilled water outlet valve 1011a fails, when the controller receives the operation command of the dual-unit series refrigeration mode, it can still operate in this way.

[0255] Alternatively, first turn on the cooling tower 30b, cooling pump 103b, cooling inlet valve 104b, chilled water pump 106b, chilled water inlet valve 107b, natural cooling chilled water outlet valve 109b, main chiller chilled water bypass valve 1010b, natural cooling chilled water outlet valve 109a, main chiller chilled water outlet valve 1011a, cooling tower 30a, cooling pump 103a, and cooling inlet valve 104b in advance, and then start the main chillers 101a and 101b. Additionally, the dual-chiller series refrigeration mode enables the cold source equipment to have the function of one standby for one in use for the chilled water pump and the main chiller chilled water outlet valve. If the chilled water pump 106a or the main chiller chilled water outlet valve 1011b fails, when the controller receives the operation command for the dual-chiller series refrigeration mode, it can still operate in this way.

[0256] Here, in the automatic control mode, the cold source controller automatically switches the operation mode according to the environmental conditions and the computer room load; in the manual mode, it can operate in the specified mode according to the manually set target operation mode.

[0257] In addition, specific activation can be selected according to the actual situation. The two are mutually backup, redundant with each other, and highly flexible.

[0258] It should be noted that in addition to the content described above, this embodiment may also include the technical features described in the above embodiments, thereby achieving the technical effects of the control method of the cold source equipment shown above. For details, please refer to the above description. For the sake of concise description, it will not be elaborated here.

[0259] For conventional chillers and their systems, such as refrigeration main chillers, chilled water pumps, cooling water pumps, water system heat exchangers, water system valves, cooling towers, cooling water pumps, etc., or between the main and standby units, they must be uniformly controlled by a group control system. The system components are scattered, occupy a large space, cannot be modularly arranged, have poor flexibility, and have a high investment cost. Now, each refrigeration component of the integrated cold source is integrally designed in a container or frame structure, and the entire cold source is modularly arranged, with high flexibility and plug-and-play. For the entire cold source and its system, using a set of controllers can achieve automatic control between the system refrigeration main chiller, chilled water pump, cooling water pump, water system heat exchanger, water system valve, cooling tower, cooling water pump, etc., or between the main and standby units, realizing control integration and structural one-piece modularization.

[0260] This solution provides a cold source equipment and its system, in which the main and standby refrigeration unit systems are integrated and integrated into one, with high product integration and one-piece prefabrication, realizing multi-mode and flexible control strategies. It can operate in 9 major operation modes according to the server cooling demand and natural environmental conditions, improving the energy-saving control efficiency of the data center refrigeration system.

[0261] Figure 5 It is a schematic structural diagram of a cold source system provided by an embodiment of this application. The cold source system includes: a cold source equipment 10, a liquid-cooled cabinet 20, and a cooling tower 30.

[0262] The cold source device 10 is the cold source device described in any of the above embodiments.

[0263] The cold source device 10 is respectively connected to the liquid cooling cabinet 20 and the cooling tower 30.

[0264] It should be noted that, in addition to the above-recorded content, this embodiment may also include the corresponding technical features described in the embodiments corresponding to the above cold source device, so as to achieve the technical effects of the above cold source device. For specific details, please refer to the above relevant descriptions. For the sake of concise description, it will not be elaborated here.

[0265] The cold source system provided by the embodiment of the present application includes: a cold source device, a liquid cooling cabinet, and a cooling tower; the cold source device is the cold source device described in any of the above embodiments; the cold source device is respectively connected to the liquid cooling cabinet and the cooling tower. Thus, since the cold source device includes at least two refrigerating machines, each refrigerating machine has at least two refrigeration modes, and the refrigerating machines can be connected in a variety of different ways, in this way, by controlling different combinations of the number, refrigeration mode, and connection method of the refrigerating machines in the working state, multiple operating modes of the cold source system can be realized, and then different refrigeration strategies can be adopted according to different usage scenarios, improving the richness of the operating modes of the cold source device and the matching degree between the operating mode and the usage scenario.

[0266] Figure 6 It is a schematic flow chart of a control method for a cold source device provided by an embodiment of the present application. This method can be applied to one or more electronic devices such as a cold source device, a controller of the cold source device, a smart phone, a notebook computer, a desktop computer, a portable computer, a server, etc. In addition, the execution subject of this method can be hardware or software. When the above execution subject is hardware, the execution subject can be one or more of the above electronic devices. For example, a single electronic device can execute this method, or multiple electronic devices can cooperate with each other to execute this method. When the above execution subject is software, this method can be implemented as multiple software or software modules, or can be implemented as a single software or software module. No specific limitation is made here.

[0267] As Figure 6 shown, this method specifically includes:

[0268] Step 301, control the refrigerating machines in the refrigeration unit of the cold source device that are in the working state to refrigerate through a target connection method and a target refrigeration mode, so that the cold source device is in a target operating mode.

[0269] In this embodiment, the target refrigeration mode is any one of at least two refrigeration modes of the refrigerating machine.

[0270] It should be noted that, in addition to the content described above, this embodiment may also include the corresponding technical features described in the embodiments corresponding to the above-mentioned cold source device, so as to achieve the technical effects of the above-mentioned cold source device. For specific details, please refer to the above relevant descriptions. For the sake of concise description, it will not be elaborated here.

[0271] In the control method of the cold source device provided by the embodiment of the present application, the cold source device is the cold source device described in any one of the above first aspects. The method can control the refrigerating machine in the refrigeration unit of the cold source device that is in the working state to refrigerate through the target connection method and the target refrigeration mode, so that the cold source device is in the target operation mode; wherein, the target refrigeration mode is any one of at least two refrigeration modes of the refrigerating machine. Thus, since the cold source device includes at least two refrigerating machines, each refrigerating machine has at least two refrigeration modes, and the refrigerating machines can be connected in a variety of different ways, in this way, by controlling different combinations of the number, refrigeration mode and connection method of the refrigerating machines in the working state, a variety of operation modes of the cold source device can be realized, and then different refrigeration strategies can be adopted according to different usage scenarios, improving the richness of the operation modes of the cold source device and the matching degree of the operation mode and the usage scenario.

[0272] Those skilled in the art should also be able to further realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described according to functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0273] The steps of the method or algorithm described in combination with the embodiments disclosed herein can be implemented by hardware, software modules executed by a processor, or a combination of the two. The software module can be placed in a random access memory (RAM), memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, register, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the technical field.

[0274] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless an execution order is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0275] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A cold source device, characterized in that, The cold source device includes a refrigeration unit and a controller; The refrigeration unit includes at least two refrigerators; Each refrigerator in the refrigeration unit is connected; The number of refrigeration modes of the refrigerators in the refrigeration unit is greater than or equal to two; The controller is connected to the refrigerators in the refrigeration unit; The controller is configured to: control the refrigerators in the refrigeration unit that are in the working state to refrigerate through a target connection method and a target refrigeration mode, so that the cold source device is in a target operation mode; wherein, the target refrigeration mode is any one of at least two refrigeration modes of the refrigerator.

2. The cold source device according to claim 1, characterized in that, Each refrigerator in the refrigeration unit includes: a main unit, a natural cooling module, a cooling pump, a cooling inlet valve, a cooling bypass valve, a freezing pump, a freezing inlet valve, a natural cooling freezing bypass valve, a natural cooling freezing outlet valve, a main unit freezing bypass valve, and a main unit freezing outlet valve; The main unit is respectively connected to a cooling tower, the natural cooling module, the cooling inlet valve, the natural cooling freezing outlet valve, the main unit freezing bypass valve, and the main unit freezing outlet valve; The natural cooling module is also respectively connected to the cooling inlet valve, the cooling bypass valve, the freezing inlet valve, the natural cooling freezing bypass valve, and the natural cooling freezing outlet valve; The cooling tower is also connected to the cooling pump; The freezing inlet valve is also connected to the freezing pump.

3. The cold source device according to claim 2, wherein Each refrigerator includes three refrigeration modes: a cooling mode, a freezing mode, and a hybrid mode. The refrigeration unit includes a first refrigerator and a second refrigerator; The main unit in the first refrigerator is also connected to the natural cooling module in the second refrigerator and the main unit in the second refrigerator; The natural cooling module in the first refrigerator is also respectively connected to the main unit in the second refrigerator.

4. The cold source device according to claim 3, characterized in that, When the target operation mode is the first operation mode, the following components of the first refrigerator or the second refrigerator are in the open state: Cooling tower, cooling pump, cooling bypass valve, freezing pump, freezing inlet valve, natural cooling freezing outlet valve, main unit freezing outlet valve.

5. The cold source device according to claim 3, characterized in that, When the target operation mode is the second operation mode, a first component and a second component are in the open state, and the opening time of the first component is earlier than the opening time of the second component; The first component includes the cooling tower, cooling pump, cooling inlet valve, freezing pump, freezing inlet valve, natural cooling freezing outlet valve, and main unit freezing outlet valve of the first refrigerator; the second component includes the main unit of the first refrigerator; or, The first component includes the cooling tower, cooling pump, cooling inlet valve, freezing pump, freezing inlet valve, natural cooling freezing outlet valve, and main unit freezing outlet valve of the second refrigerator; the second component includes the main unit of the second refrigerator.

6. The cold source device according to claim 3, characterized in that, When the target operation mode is the third operation mode, a third component and a fourth component are in the open state, and the opening time of the third component is earlier than the opening time of the fourth component; The third component includes the cooling tower, cooling pump, cooling bypass valve, freezing pump, freezing inlet valve, natural cooling freezing outlet valve, and main unit freezing outlet valve of the first refrigerator; the fourth component includes the main unit of the first refrigerator; or, The third component includes the cooling tower, cooling pump, cooling bypass valve, chiller pump, chilled water inlet valve, free cooling chilled water outlet valve, and main chiller outlet valve of the second chiller; the fourth component includes the main chiller of the second chiller; or, The third component includes the cooling tower, cooling pump, cooling bypass valve, chiller pump, chilled water inlet valve, free cooling bypass valve of the first chiller, and the free cooling chilled water outlet valve, main chiller outlet valve, cooling tower, cooling pump, and cooling water inlet valve of the second chiller; the fourth component includes the main chiller of the second chiller; or, The third component includes the cooling tower, cooling pump, cooling bypass valve, chiller pump, chilled water inlet valve, free cooling bypass valve of the second chiller, and the free cooling chilled water outlet valve, main chiller outlet valve, cooling tower, cooling pump, and cooling water inlet valve of the first chiller; the fourth component includes the main chiller of the first chiller.

7. The cold source device according to claim 3, characterized in that, When the target operating mode is the fourth operating mode, the fifth component is in the open state; The fifth component includes: the cooling tower, cooling pump, cooling bypass valve, chiller pump, chilled water inlet valve, free cooling chilled water outlet valve, main chiller bypass valve of the first chiller, and the cooling tower, cooling pump, cooling bypass valve, free cooling chilled water outlet valve, and main chiller outlet valve of the second chiller; or, The fifth component includes: the cooling tower, cooling pump, cooling bypass valve, chiller pump, chilled water inlet valve, free cooling chilled water outlet valve, main chiller bypass valve of the second chiller, and the cooling tower, cooling pump, cooling bypass valve, free cooling chilled water outlet valve, and main chiller outlet valve of the first chiller.

8. The cold source device according to claim 3, wherein When the target operating mode is the fifth operating mode, the sixth component and the seventh component are in the open state, and the opening time of the sixth component is earlier than that of the seventh component; The sixth component includes the cooling tower, cooling pump, cooling water inlet valve, chiller pump, chilled water inlet valve, free cooling chilled water outlet valve, main chiller bypass valve of the first chiller, and the free cooling chilled water outlet valve, main chiller outlet valve, cooling tower, cooling pump, and cooling water inlet valve of the second chiller; the seventh component includes the main chiller of the first chiller and the main chiller of the second component; or, The sixth component includes the cooling tower, cooling pump, cooling water inlet valve, chiller pump, chilled water inlet valve, free cooling chilled water outlet valve, main chiller bypass valve of the second chiller, and the free cooling chilled water outlet valve, main chiller outlet valve, cooling tower, cooling pump, and cooling water inlet valve of the first chiller; the seventh component includes the main chiller of the first chiller and the main chiller of the second component.

9. The cold source device according to claim 3, wherein When the target operating mode is the sixth operating mode, the eighth component and the ninth component are in the open state, and the opening time of the eighth component is earlier than that of the ninth component; The eighth component includes the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, natural cooling chilled water outlet valve, main unit chilled water bypass valve of the first chiller, and the cooling tower, cooling pump, cooling bypass valve, natural cooling chilled water outlet valve, main unit chilled water outlet valve of the second chiller; the ninth component includes the main units of the first chiller and the second chiller; or, The eighth component includes the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, natural cooling chilled water outlet valve, main unit chilled water bypass valve of the second chiller, and the cooling tower, cooling pump, cooling bypass valve, natural cooling chilled water outlet valve, main unit chilled water outlet valve of the first chiller; the ninth component includes the main units of the first chiller and the second chiller.

10. The cold source device according to claim 3, characterized in that, When the target operating mode is the seventh operating mode, the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, natural cooling chilled water outlet valve, main unit chilled water outlet valve of the first chiller are turned on, and the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, natural cooling chilled water outlet valve, main unit chilled water outlet valve of the second chiller are turned on.

11. The cold source device according to claim 3, characterized in that, When the target operating mode is the eighth operating mode, the tenth component and the eleventh component are in the on state, and the turning-on time of the tenth component is earlier than that of the eleventh component; The tenth component includes the cooling tower, cooling pump, cooling inlet valve, chilled water pump, chilled water inlet valve, natural cooling chilled water outlet valve, main unit chilled water outlet valve of the first chiller, and the cooling tower, cooling pump, cooling inlet valve, chilled water pump, chilled water inlet valve, natural cooling chilled water outlet valve, main unit chilled water outlet valve of the second chiller; The eleventh component includes the main units of the first chiller and the second chiller.

12. The cold source device according to claim 3, characterized in that, When the target operating mode is the ninth operating mode, the twelfth component and the thirteenth component are in the on state, and the turning-on time of the twelfth component is earlier than that of the thirteenth component; The twelfth component includes the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, natural cooling chilled water outlet valve, main unit chilled water outlet valve of the first chiller, and the cooling tower, cooling pump, cooling bypass valve, chilled water pump, chilled water inlet valve, natural cooling chilled water outlet valve, main unit chilled water outlet valve of the second chiller; the thirteenth component includes the main units of the first chiller and the second chiller.

13. The cold source device according to claim 2, characterized in that, The natural cooling module includes a cooling side heat exchanger and a chilled water side heat exchanger; The cooling side heat exchanger is respectively connected to the main unit, the cooling inlet valve and the cooling bypass valve; The chilled water side heat exchanger is respectively connected to the chilled water inlet valve, the natural cooling chilled water bypass valve and the natural cooling chilled water outlet valve.

14. The cold source device according to claim 1, characterized in that, Each chiller includes three refrigeration modes: cooling mode, chilled water mode and hybrid mode; and When the target operating mode is the first operating mode, the number of chillers in the working state is one, the target connection method represents single-unit connection, and the target refrigeration mode represents the cooling mode; or, When the target operating mode is the second operating mode, the number of refrigerators in the working state is one, the target connection method represents single-unit connection, and the target refrigeration mode represents the freezing mode; or, When the target operating mode is the third operating mode, the number of refrigerators in the working state is one, the target connection method represents single-unit connection, and the target refrigeration mode represents the hybrid mode; or, When the target operating mode is the fourth operating mode, the number of refrigerators in the working state is two, the target connection method represents dual-unit series connection, and the target refrigeration mode represents the cooling mode; or, When the target operating mode is the fifth operating mode, the number of refrigerators in the working state is two, the target connection method represents dual-unit series connection, and the target refrigeration mode represents the freezing mode; or, When the target operating mode is the sixth operating mode, the number of refrigerators in the working state is two, the target connection method represents dual-unit series connection, and the target refrigeration mode represents the hybrid mode; or, When the target operating mode is the seventh operating mode, the number of refrigerators in the working state is two, the target connection method represents dual-unit parallel connection, and the target refrigeration mode represents the cooling mode; or, When the target operating mode is the eighth operating mode, the number of refrigerators in the working state is two, the target connection method represents dual-unit parallel connection, and the target refrigeration mode represents the freezing mode; or, When the target operating mode is the ninth operating mode, the number of refrigerators in the working state is two, the target connection method represents dual-unit parallel connection, and the target refrigeration mode represents the hybrid mode.

15. The cold source device according to any one of claims 1-14, characterized in that, The cold source device is integrally provided.

16. A cold source system, characterized in that, The cold source system includes: a cold source device, a liquid-cooled cabinet, and a cooling tower; The cold source device is the cold source device according to any one of claims 1-15 above; The cold source device is respectively connected to the liquid-cooled cabinet and the cooling tower.

17. A control method for a cold source device, characterized in that, The cold source device is the cold source device according to one of claims 1-15, and the method includes: Controlling the refrigerators in the working state in the refrigeration unit of the cold source device to perform refrigeration through the target connection method and the target refrigeration mode, so that the cold source device is in the target operating mode; Wherein, the target refrigeration mode is any one of at least two refrigeration modes of the refrigerator.

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