Control method and equipment for double-cold-source air conditioning system

Abstract

The invention provides a control method and equipment of a double-cold-source air conditioning system, the double-cold-source air conditioning system comprises a first cold source system and a second cold source system, the first cold source system is a refrigerating system formed by a heat exchange unit, a refrigerant water inlet pipe, a refrigerant water outlet pipe and a first refrigerating coil of an evaporator; the second cold source system is a refrigerating system formed by a second refrigerating coil of the evaporator, the compressor, the condenser and the first one-way valve. And controlling the first cold source system and / or the second cold source system to refrigerate according to the target operation mode according to the control demand instruction. Therefore, an original cold source system does not need to be dismantled, the double-cold-source air conditioning system is formed by additionally arranging a set of refrigerating coil on the evaporator and additionally arranging the second cold source system on the basis of the first cold source system, and the double-cold-source air conditioning system is controlled to refrigerate according to the target operation mode according to the control requirement so as to achieve energy-saving operation. The problem that old machine rooms are difficult to transform and upgrade is solved.

Description

Technical Field

[0001] The present application relates to the technical field of air-conditioning systems, and in particular to a control method and device for a dual-cold-source air-conditioning system. Background Art

[0002] With the increasing demand for energy-efficient computer room air conditioners, the energy-saving performance of some existing computer room air conditioners is no longer sufficient, necessitating improvements in energy-saving indicators. However, the main problem with existing computer rooms is that some older rooms utilize chilled water mainframes, whose cooling capacity has declined to a certain extent. However, chilled water systems are bulky, costly, and unsuitable for direct removal, making energy-saving upgrades and renovations in computer rooms quite difficult. Summary of the Invention

[0003] The present application provides a control method and device for a dual-cold-source air-conditioning system, which is used to overcome the technical problems of existing computer rooms being difficult to upgrade and renovate for energy saving due to the attenuation of cooling capacity of old air conditioners, their large size, high cost and unsuitability for removal.

[0004] In a first aspect, the present application provides a control method for a dual-cold-source air-conditioning system, the dual-cold-source air-conditioning system comprising: a first cold-source system and a second cold-source system; the first cold-source system comprising a heat exchange unit, a refrigerant water inlet pipe, a refrigerant water outlet pipe, and a first refrigeration coil of an evaporator forming a refrigeration system; the second cold-source system comprising a second refrigeration coil of the evaporator, a compressor, a condenser, and a first one-way valve forming a refrigeration system; the method comprising:

[0005] controlling the first cold source system and / or the second cold source system to cool according to a target operating mode according to a control demand instruction, wherein the target operating mode includes any one of a preferred operating mode, an emergency operating mode, or an energy-saving operating mode, and a combination of individual modes;

[0006] The first end and the second end of the heat exchange unit are connected to the refrigerant water inlet pipe and the refrigerant water outlet pipe respectively, and the third end and the fourth end of the heat exchange unit are connected to the first refrigeration coil of the evaporator respectively;

[0007] One end of the compressor is connected to the second refrigeration coil of the evaporator, the other end of the compressor is connected to one end of the condenser, the other end of the condenser is connected to one end of the first one-way valve, and the other end of the first one-way valve is connected to the second refrigeration coil of the evaporator.

[0008] There is no need to dismantle the original cold source system. By adding a set of refrigeration coils to the evaporator, a second cold source system can be added on the basis of the first cold source system. Two independent refrigeration judgments correspond to the two cold source systems, forming a dual-cold source air-conditioning system. According to the control requirements, the dual-cold source air-conditioning system is controlled to cool according to the target operation mode to achieve efficient and energy-saving operation, improve the reliability of the computer room air-conditioning operation, and solve the problem of difficulty in reusing, renovating and upgrading the computer room.

[0009] In one possible design, the first refrigeration coil of the evaporator includes a first cold source gas pipe and a first cold source liquid pipe, and the third end and the fourth end of the heat exchange unit are respectively connected to the first refrigeration coil of the evaporator, including:

[0010] The third end of the heat exchange unit is connected to the first cold source air pipe, and the first cold source air pipe is a refrigerant outlet;

[0011] The fourth end of the heat exchange unit is connected to the first cold source liquid pipe, and the first cold source liquid pipe is the refrigerant inlet.

[0012] The first refrigeration coil includes a first cold source gas pipe and a first cold source liquid pipe, which serve as a refrigerant outlet and a refrigerant inlet respectively, so that the refrigerant completes evaporation phase change in the vertical copper tube of the first refrigeration coil.

[0013] In a possible design, the first cold source system further includes a first distribution pipeline and a second distribution pipeline, and the third end of the heat exchange unit is connected to the first cold source air pipe, including: the third end of the heat exchange unit is connected to the first cold source air pipe through the first distribution pipeline;

[0014] The fourth end of the heat exchange unit is connected to the first cold source liquid pipe, which includes: the fourth end of the heat exchange unit is connected to the first cold source liquid pipe through the second distribution pipeline.

[0015] The first refrigeration coil of the evaporator is connected to the heat exchange unit through a first distribution pipeline and a second distribution pipeline.

[0016] In one possible design, the preferred operating mode includes a cooling mode of the first cold source system, and the cooling mode of the first cold source system includes any one of a chilled water cooling mode, a gravity heat pipe cooling mode, or a power heat pipe cooling mode.

[0017] The cooling mode of the first cold source system is the preferred operating mode of the dual cold source air-conditioning system. The first cold source system can include multiple cooling modes of the cold source to enrich the cooling mode.

[0018] In one possible design, the second refrigeration coil of the evaporator includes a second cold source air pipe and a second cold source liquid pipe, and the second cold source air pipe and the second cold source liquid pipe are located on the same side of the second refrigeration coil;

[0019] One end of the compressor is connected to the second refrigeration coil of the evaporator, comprising: one end of the compressor is connected to the second cold source air pipe;

[0020] The other end of the first one-way valve is connected to the second refrigeration coil of the evaporator, including: the other end of the first one-way valve is connected to the second cold source liquid pipe.

[0021] The second refrigeration coil includes a second cold source air pipe and a second cold source liquid pipe arranged on the same side to connect the evaporator with the compressor and the condenser.

[0022] In a possible design, the second cold source system further includes a third distribution pipeline and a fourth distribution pipeline, and one end of the compressor is connected to the second cold source air pipe, including: one end of the compressor is connected to the second cold source air pipe through the third distribution pipeline;

[0023] The other end of the first one-way valve is connected to the second cold source liquid pipe, which includes: the other end of the first one-way valve is connected to the second cold source liquid pipe through the fourth distribution pipeline.

[0024] The second cold source coil of the evaporator is connected to the compressor and the first one-way valve through the third distribution pipeline and the fourth distribution pipeline.

[0025] In a possible design, the emergency operation mode includes a compressor mechanical refrigeration mode in a refrigeration mode of the second cold source system.

[0026] The compressor mechanical refrigeration mode in the refrigeration mode of the second cold source system is the emergency operation mode of the dual cold source air-conditioning system, so as to enrich the refrigeration mode of the dual cold source air-conditioning system through the second cold source system.

[0027] In a possible design, the second cold source system further includes: a fluorine pump, which constitutes a fluorine pump natural cooling mode in the refrigeration mode of the second cold source system, and the energy-saving operation mode includes the fluorine pump natural cooling mode; wherein, one end of the fluorine pump is connected to one end of the first one-way valve, and the other end of the fluorine pump is connected to the other end of the first one-way valve.

[0028] A fluorine pump is added to the second cold source system to form a fluorine pump natural cooling mode of the dual cold source air conditioning system, enriching the cooling method of the second cold source system and operating as an energy-saving operation mode of the dual cold source air conditioning system.

[0029] In one possible design, if the control demand instruction is a first control instruction, controlling the first cold source system and / or the second cold source system of the dual cold source air-conditioning system to cool according to the target operating mode according to the control demand instruction includes:

[0030] In response to a start instruction of the dual-cold-source air-conditioning system, determining whether the first cold-source system has an abnormality;

[0031] If not, controlling the first cooling source system to cool in the preferred operating mode according to the first control instruction;

[0032] If yes, controlling the second cold source system to cool in the emergency operation mode or the energy-saving operation mode according to the first control instruction;

[0033] The first control instruction is used to indicate that the control requirement of the dual-cold-source air-conditioning system is a safety priority.

[0034] If reliability and safety are the top priority for control requirements, the highest reliability can be achieved by backing up the two cooling source systems. The preferred operating mode of the first cooling source system is used as the main cooling mode, and the second cooling source system serves as a backup cooling system in the event of an abnormality of the first cooling source system.

[0035] In a possible design, if a shutdown instruction of the dual-cold-source air-conditioning system is received, the method further includes:

[0036] In response to the shutdown instruction, the first cold source system or the second cold source system is shut down, so that the dual cold source air-conditioning system is in a shutdown state.

[0037] If the shutdown conditions are met during the operation of the dual-cooling source air conditioner, the current operating mode will be switched to the shutdown state.

[0038] In a possible design, after controlling the first cooling source system to cool in the preferred operating mode, the method further includes:

[0039] If an abnormality occurs in the first cold source system, a first switching instruction is generated, and in response to the first switching instruction, the first cold source system is switched to the second cold source system to control the second cold source system to cool in the emergency operation mode or the energy-saving operation mode.

[0040] In the preferred operating mode of cooling, if an abnormality occurs in the first cold source system, the system switches to the second cold source system to activate the backup cold source, thereby switching from the preferred operating mode of the first cold source system to the emergency operating mode or energy-saving operating mode of the second cold source system.

[0041] In a possible design, after switching the first cooling source system to the second cooling source system in response to the first switching instruction, the method further includes:

[0042] If the first cooling source system returns to normal, a second switching instruction is generated, and in response to the second switching instruction, the second cooling source system is switched to the first cooling source system to control the first cooling source system to cool in the preferred operation mode.

[0043] After switching from the first cold source system to the second cold source system, if the abnormality of the first cold source system is eliminated and restored to normal, the system is switched back from the second cold source system to the first cold source system, and the first cold source system is restored to the preferred operating mode for cooling, thereby realizing mutual switching between the first cold source system and the second cold source system.

[0044] In one possible design, controlling the second cold source system to perform cooling in the emergency operation mode or the energy-saving operation mode includes:

[0045] determining whether the startup state of the second cold source system satisfies the startup condition of the energy-saving operation mode;

[0046] If yes, controlling the second cold source system to cool in the energy-saving operation mode;

[0047] If not, the second cold source system is controlled to cool in the emergency operation mode.

[0048] When switching from the first cold source system to the second cold source system, if the startup state of the second cold source system meets the startup conditions of its energy-saving operation mode, the second cold source system will cool in the energy-saving operation mode after the first cold source system is switched to the second cold source system.

[0049] In one possible design, if the control demand instruction is a second control instruction, controlling the first cold source system and / or the second cold source system of the dual cold source air-conditioning system to cool according to the target operating mode according to the control demand instruction includes:

[0050] In response to the start-up instruction of the dual-cold-source air-conditioning system, determining whether the start-up state of the second cold-source system meets the start-up condition of the energy-saving operation mode;

[0051] If yes, controlling the second cooling source system to cool in the energy-saving operation mode according to the second control instruction;

[0052] If not, controlling the first cooling source system to cool in the preferred operating mode according to the second control instruction;

[0053] The second control instruction is used to indicate that the control requirement of the dual-cold-source air-conditioning system is energy-saving priority.

[0054] If the control demand takes energy saving as the first priority, when the startup state of the second cold source system meets the startup conditions of its energy-saving operation mode, cooling is carried out in the energy-saving operation mode of the second cold source system; when the startup state is not met, cooling is carried out in the preferred operation mode of the first cold source system, so as to take energy saving as the first priority of the control demand and achieve energy-saving operation.

[0055] In a possible design, after controlling the first cold source system to cool in the preferred operating mode, or after controlling the second cold source system to cool in the energy-saving operating mode, the method further includes:

[0056] If there is an abnormality in the first cold source system or the energy-saving operation mode, a third switching instruction is generated, and in response to the third switching instruction, the preferred operation mode or the energy-saving operation mode is switched to the emergency operation mode to control the second cold source system to cool in the emergency operation mode.

[0057] If there is an abnormality in the first cold source system or an abnormality in the energy-saving operation mode of the second cold source system, the current operation mode is switched to the emergency operation mode of the second cold source system to start emergency refrigeration.

[0058] In a possible design, after controlling the first cooling source system to cool in the preferred operating mode, the method further includes:

[0059] Determining whether the cooling capacity of the first cooling source system meets a first preset cooling capacity;

[0060] If not, the second cold source system is turned on to cool in the emergency operation mode to control the dual-cold source air-conditioning system to operate in a first dual mode, where the first dual mode includes the primary operation mode and the emergency operation mode.

[0061] When the first cold source system is cooling in the preferred operation mode, if the cooling capacity of the first cold source system is insufficient, the emergency operation mode of the second cold source system is activated so that the second cold source system assists the first cold source system in cooling.

[0062] In a possible design, after controlling the first cooling source system to cool in the preferred operating mode, the method further includes:

[0063] If the startup status of the second cold source system meets the startup conditions of the energy-saving operation mode, the second cold source system is turned on to cool in the energy-saving operation mode to control the dual-cold source air-conditioning system to operate in a second dual mode, and the second dual mode includes the preferred operation mode and the energy-saving operation mode.

[0064] When the first cold source system is cooling in the preferred operation mode, if the startup state of the second cold source system meets the startup conditions of the energy-saving operation mode, the energy-saving operation mode of the second cold source system is turned on to form a dual-mode cooling of the preferred operation mode and the energy-saving operation mode.

[0065] In a possible design, after controlling the dual-cold-source air-conditioning system to operate in the first dual mode, the method further includes:

[0066] If the first cold source system has an abnormality, a fourth switching instruction is generated, and in response to the fourth switching instruction, the first dual mode is switched to the emergency operation mode or the energy-saving operation mode according to the startup state of the second cold source system, and the second cold source system is controlled to cool in the emergency operation mode or the energy-saving operation mode;

[0067] If the second cold source system has an abnormality, a fifth switching instruction is generated, and in response to the fifth switching instruction, the first dual mode is switched to the primary operation mode, and the first cold source system is controlled to cool in the primary operation mode.

[0068] When the dual cooling source systems are operating together, if one of the cooling source systems has an abnormality, the cooling will be switched to the single cooling source system to ensure the reliability of the dual cooling source air conditioning system.

[0069] In a possible design, responding to the fourth switching instruction and switching the first dual mode to the emergency operation mode or the energy-saving operation mode according to the startup state of the second cold source system includes:

[0070] determining whether the startup state of the second cold source system satisfies the startup condition of the energy-saving operation mode;

[0071] If yes, switching the first dual mode to the energy-saving operation mode in response to the fourth switching instruction to control the second cold source system to cool in the energy-saving operation mode;

[0072] If not, the first dual mode is switched to the emergency operation mode in response to the fourth switching instruction, so as to control the second cold source system to cool in the emergency operation mode.

[0073] When switching from a dual cold source system to a single cold source system for cooling, if the startup state of the second cold source system meets the energy-saving operation mode, the dual cold source system switches to the energy-saving operation mode of the second cold source system and the single cold source system for cooling; if not, the dual cold source system switches to the emergency operation mode of the second cold source system and the single cold source system for cooling.

[0074] In a possible design, after controlling the dual-cold-source air-conditioning system to operate in the second dual mode, the method further includes:

[0075] If the first cold source system has an abnormality, a sixth switching instruction is generated, and in response to the sixth switching instruction, the second dual mode is switched to the emergency operation mode or the energy-saving operation mode according to the startup state of the second cold source system, and the second cold source system is controlled to cool in the emergency operation mode or the energy-saving operation mode;

[0076] If the second cold source system has an abnormality, a seventh switching instruction is generated, and in response to the seventh switching instruction, the second dual mode is switched to the primary operating mode, and the first cold source system is controlled to cool in the primary operating mode.

[0077] When the dual cooling source systems are operating together, if one of the cooling source systems has an abnormality, the cooling will be switched to the single cooling source system to ensure the reliability of the dual cooling source air conditioning system.

[0078] In one possible design, responding to the sixth switching instruction and switching the second dual mode to the emergency operation mode or the energy-saving operation mode according to the startup state of the second cold source system includes:

[0079] determining whether the startup state of the second cold source system meets the startup condition of the energy-saving operation mode;

[0080] If yes, switching the second dual mode to the energy-saving operation mode in response to the sixth switching instruction to control the second cold source system to cool in the energy-saving operation mode;

[0081] If not, the second dual mode is switched to the emergency operation mode in response to the sixth switching instruction, so as to control the second cold source system to cool in the emergency operation mode.

[0082] When switching from a dual cold source system to a single cold source system for cooling, if the startup state of the second cold source system meets the energy-saving operation mode, the dual cold source system switches to the energy-saving operation mode of the second cold source system and the single cold source system for cooling; if not, the dual cold source system switches to the emergency operation mode of the second cold source system and the single cold source system for cooling.

[0083] In a possible design, after controlling the second cold source system to operate in the emergency mode, the method further includes:

[0084] Determining whether the cooling capacity of the second cooling source system meets a second preset cooling capacity;

[0085] If not, the first cold source system is turned on to cool in the preferred operating mode, so as to control the dual-cold source air-conditioning system to operate in the first dual mode.

[0086] When the second cold source system is cooling in the emergency operation mode, if the cooling capacity of the second cold source system is insufficient, the first cold source system is turned on to cool in the preferred operation mode to switch from the single cold source system to the dual cold source system, thereby realizing the switching from the emergency operation mode of the single cold source system to the preferred operation mode and the emergency operation mode of the dual cold source system.

[0087] In a possible design, after the second cold source system operates in the energy-saving mode, the method further includes:

[0088] determining whether the cooling capacity of the second cooling source system meets a third preset cooling capacity;

[0089] If not, the first cold source system is turned on to cool in the preferred operating mode, so that the dual-cold source air-conditioning system operates in the second dual mode.

[0090] When the second cold source system is cooling in the energy-saving operation mode, if the cooling capacity of the second cold source system is insufficient, the first cold source system is turned on to cool in the preferred operation mode, so as to switch from the single cold source system to the dual cold source system, thereby realizing the switching from the energy-saving operation mode of the single cold source system to the preferred operation mode and the energy-saving operation mode of the dual cold source system.

[0091] In a possible design, after controlling the second cold source system to cool in the emergency operation mode, the method further includes:

[0092] determining whether the startup state of the second cold source system meets the startup condition of the energy-saving operation mode;

[0093] If so, an eighth switching instruction is generated, and in response to the eighth switching instruction, the emergency operation mode is switched to the energy-saving operation mode to control the second cold source system to cool in the energy-saving operation mode.

[0094] When the second cold source system is cooling in the emergency operation mode, if the startup state of the second cold source system meets the startup conditions of the energy-saving operation mode, the emergency operation mode cooling of the second cold source system is switched to the energy-saving operation mode cooling of the second cold source system, so that the switching between the emergency operation mode and the energy-saving operation mode is achieved.

[0095] In a possible design, after controlling the second cold source system to cool in the energy-saving operation mode, the method further includes:

[0096] determining whether the cooling capacity of the second cooling source system meets a fourth preset cooling capacity;

[0097] If not, and there is an abnormality in the first cold source system, a ninth switching instruction is generated, and in response to the ninth switching instruction, the energy-saving operation mode is switched to the emergency operation mode to control the second cold source system to cool in the emergency operation mode.

[0098] When the second cold source system is cooling in the energy-saving operation mode, if there is an abnormality in the first cold source and the cooling capacity of the second cold source system is insufficient, the energy-saving operation mode is switched to the emergency operation mode, thereby realizing flexible switching from the energy-saving operation mode to the emergency operation mode.

[0099] In a second aspect, the present application provides a control device for a dual-cold-source air-conditioning system, the dual-cold-source air-conditioning system comprising: a first cold-source system and a second cold-source system; the first cold-source system comprising a heat exchange unit, a refrigerant water inlet pipe, a refrigerant water outlet pipe, and a first refrigeration coil of an evaporator forming a refrigeration system; the second cold-source system comprising a second refrigeration coil of the evaporator, a compressor, a condenser, and a first one-way valve forming a refrigeration system; the control device comprising:

[0100] A control module is used to control the first cold source system and / or the second cold source system of the dual cold source air-conditioning system to cool according to a target operating mode according to a control demand instruction. The target operating mode includes any one of a preferred operating mode, an emergency operating mode or an energy-saving operating mode, and a combination of individual modes.

[0101] In which, the first end and the second end of the heat exchange unit are respectively connected to the refrigerant inlet pipe and the refrigerant outlet pipe, and the third end and the fourth end of the heat exchange unit are respectively connected to the first refrigeration coil of the evaporator; one end of the compressor is connected to the second refrigeration coil of the evaporator, and the other end of the compressor is connected to one end of the condenser, and the other end of the condenser is connected to one end of the first one-way valve, and the other end of the first one-way valve is connected to the second refrigeration coil of the evaporator.

[0102] There is no need to dismantle the original cold source system. By adding a set of refrigeration coils to the evaporator, a second cold source system can be added on the basis of the first cold source system. Two independent refrigeration judgments correspond to the two cold source systems, forming a dual-cold source air-conditioning system. According to the control requirements, the dual-cold source air-conditioning system is controlled to cool according to the target operation mode to achieve efficient and energy-saving operation, improve the reliability of the computer room air-conditioning operation, and solve the problem of difficulty in reusing, renovating and upgrading the computer room.

[0103] In a third aspect, the present application provides an electronic device, comprising: a processor, and a memory communicatively connected to the processor;

[0104] The memory stores computer-executable instructions;

[0105] The processor executes the computer-executable instructions stored in the memory to implement any possible control method for the dual-cold-source air-conditioning system provided in the first aspect.

[0106] In a fourth aspect, the present application provides a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are executed by a processor, they are used to implement any possible control method for a dual-cold-source air-conditioning system provided in the first aspect.

[0107] In a fifth aspect, the present application provides a computer program product, comprising computer-executable instructions, which, when executed by a processor, are used to implement any possible control method for a dual-cold-source air-conditioning system provided in the first aspect.

[0108] The present application provides a control method and device for a dual-cold-source air-conditioning system, the dual-cold-source air-conditioning system comprising: a first cold-source system and a second cold-source system, the first cold-source system comprising a heat exchange unit, a refrigerant inlet pipe, a refrigerant outlet pipe, and a first refrigeration coil of an evaporator to form a refrigeration system, and the second cold-source system comprising a second refrigeration coil of the evaporator, a compressor, a condenser, and a first one-way valve to form a refrigeration system. The first end and the second end of the heat exchange unit are connected to the refrigerant inlet pipe and the refrigerant outlet pipe, respectively, the third end and the fourth end of the heat exchange unit are connected to the first refrigeration coil of the evaporator, one end of the compressor is connected to the second refrigeration coil of the evaporator, the other end of the compressor is connected to one end of the condenser, the other end of the condenser is connected to one end of the first one-way valve, and the other end of the first one-way valve is connected to the second refrigeration coil of the evaporator. According to a control demand instruction, the first cold-source system and / or the second cold-source system are controlled to cool according to a target operating mode, the target operating mode comprising any one of a preferred operating mode, an emergency operating mode, or an energy-saving operating mode, and a combination of individual modes. Therefore, there is no need to dismantle the original cold source system. By adding a set of refrigeration coils to the evaporator, a second cold source system is added to the first cold source system to form a dual-cold source air-conditioning system. According to the control requirements, the dual-cold source air-conditioning system is controlled to cool according to the target operating mode to achieve energy-saving operation, solving the problem of difficulty in reusing, renovating and upgrading the old computer room. BRIEF DESCRIPTION OF THE DRAWINGS

[0109] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0110] Figure 1 A schematic structural diagram of a dual-cold-source air-conditioning system provided in an embodiment of the present application;

[0111] Figure 2 A schematic structural diagram of an evaporator provided in an embodiment of the present application;

[0112] Figure 3 A schematic flow chart of a dual-cold-source air conditioning control method provided in an embodiment of the present application;

[0113] Figure 4 for Figure 3 Schematic diagram of the control idea of ​​the control method shown;

[0114] Figure 5 A flow chart of another dual-cold-source air conditioning control method provided in an embodiment of the present application;

[0115] Figure 6 for Figure 5 Schematic diagram of the control idea of ​​the control method shown;

[0116] Figure 7 A schematic structural diagram of a dual-cold-source air-conditioning control device provided in an embodiment of the present application;

[0117] Figure 8 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0118] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of methods and apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

[0119] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the numbers used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0120] With the increasing demand for energy-efficient computer room air conditioners, the energy-saving performance of some existing computer room air conditioners is no longer sufficient, necessitating improvements in energy-saving indicators. However, the main problem with existing computer rooms is that some older rooms utilize chilled water mainframes, whose cooling capacity has declined to a certain extent. However, chilled water systems are bulky, costly, and unsuitable for direct removal, making energy-saving upgrades and renovations in computer rooms quite difficult.

[0121] In response to the above-mentioned problems existing in the prior art, the present application provides a control method and device for a dual-cold-source air-conditioning system. The inventive concept of the control method for the dual-cold-source air-conditioning system provided by the present application is: adding a refrigeration coil to the evaporator, that is, adding a second refrigeration coil, and configuring a corresponding second cold source system to transform the original single cold source system into a dual-cold source system, namely a first cold source system and a second cold source system. Among them, the first cold source system is composed of a heat exchange unit, a refrigerant inlet pipe, a refrigerant outlet pipe and the first refrigeration coil of the evaporator, and the second cold source system is composed of the second refrigeration coil of the evaporator, a compressor, a condenser and a first one-way valve. Based on this dual-cold-source control system, the dual-cold-source air-conditioning system is controlled to refrigerate according to the target operating mode according to the control requirements to achieve energy-saving operation. The dual-cold-source air-conditioning system has the advantages of reliable performance, strong backup and significantly improved energy-saving effect. There is no need to dismantle the original refrigeration system, which solves the problem of difficulty in reusing and upgrading the machine room.

[0122] Figure 1 A schematic diagram of the structure of a dual-cold source air conditioning system provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the dual cold source air conditioning system 10 includes: a first cold source system and a second cold source system.

[0123] The first cold source system includes a refrigeration system formed by a heat exchange unit 111, a refrigerant water inlet pipe 112, a refrigerant water outlet pipe 113 and a first refrigeration coil of an evaporator 114. Figure 1 As shown in FIG, the first end and the second end of the heat exchange unit 111 are respectively connected to the refrigerant water inlet pipe 112 and the refrigerant water outlet pipe 113, and the third end and the fourth end of the heat exchange unit 111 are respectively connected to the first refrigeration coil of the evaporator 114. In some embodiments, the refrigerant can be chilled water.

[0124] The second cold source system includes a refrigeration system formed by the second refrigeration coil of the evaporator 114, the compressor 121, the condenser 122 and the first one-way valve 123. Figure 1As shown, one end of the compressor 121 is connected to the second refrigeration coil of the evaporator 114, the other end of the compressor 121 is connected to one end of the condenser 122, the other end of the condenser 122 is connected to one end of the first one-way valve 123, and the other end of the first one-way valve 123 is connected to the second refrigeration coil of the evaporator 114. The first one-way valve 123 is a bypass one-way valve.

[0125] Optionally, the other end of the compressor 121 and one end of the condenser 122 may be connected via a second one-way valve 128 . The second one-way valve 128 is provided to prevent backflow and protect the compressor 121 .

[0126] It can be seen that the evaporator 114 includes two independent refrigeration coils, namely the first refrigeration coil and the second refrigeration coil. The two independent refrigeration coils correspond to two cold source systems, namely the first cold source system and the second cold source system.

[0127] In some embodiments, the cooling mode of the first cooling source system may include but is not limited to any one of a chilled water cooling mode, a gravity heat pipe cooling mode, or a power heat pipe cooling mode. Figure 2 As shown, refer to Figure 2 As shown, the refrigeration coil corresponding to the first cold source system of the evaporator 114 is the first refrigeration coil 1141, and the first refrigeration coil 1141 includes a first cold source gas pipe 11411 and a first cold source liquid pipe 11412. For example, when the refrigeration mode of the first cold source system is the gravity heat pipe refrigeration mode, Figure 2 The first cooling source gas pipe 11411 is located at the top of the first cooling coil 1141 and is the refrigerant inlet. The first cooling source liquid pipe 11412 is located at the bottom of the first cooling source coil 1141 and is the refrigerant outlet. The refrigerant completes the evaporation phase change in the vertical copper tube. It is understandable that the form of the first cooling coil 1141 will vary depending on the cooling mode of the first cooling source system. Figure 2 The cooling mode of the first cooling source system is illustrated as a gravity heat pipe cooling mode as an example, but is not limited thereto.

[0128] Reference Figure 1 and Figure 2 As shown, Figure 1 The third end and the fourth end of the middle heat exchange unit 111 are respectively connected to the first refrigeration coil of the evaporator 114. Possible implementation methods include:

[0129] The third end of the heat exchange unit 111 is connected to the first cold source gas pipe 11411 , and the fourth end of the heat exchange unit 111 is connected to the first cold source liquid pipe 11412 .

[0130] Continue to refer to Figure 1 As shown, the first cold source system further includes a first distribution pipeline 115 and a second distribution pipeline 116 .

[0131] In some embodiments, possible implementations of connecting the third end of the heat exchange unit 111 to the first cold source air pipe 11411 include: connecting the third end of the heat exchange unit 111 to the first cold source air pipe 11411 through the first distribution pipeline 115 .

[0132] Possible implementations of connecting the fourth end of the heat exchange unit 111 to the first cold source liquid pipe 11412 include:

[0133] The fourth end of the heat exchange unit 111 is connected to the first cold source liquid pipe 11412 through the second distribution pipeline 116 .

[0134] The heat exchange unit is connected to the first refrigeration coil of the evaporator through the first distribution pipeline and the second distribution pipeline, so that a first cold source system is formed based on the heat exchange unit, the refrigerant inlet pipe, the refrigerant outlet pipe and the first refrigeration coil of the evaporator.

[0135] As described in the above embodiment, another cooling coil, namely a second cooling coil, is added to the evaporator having the first cooling coil to form a second cooling source system. In some embodiments, the cooling mode of the second cooling source system can include a compressor mechanical cooling mode, that is, a variable frequency compressor system.

[0136] Reference Figure 2 As shown, the second refrigeration coil 1142 of the evaporator 114 may include a second cold source air pipe 11421 and a second cold source liquid pipe 11422 , wherein the second cold source air pipe 11421 and the second cold source liquid pipe 11422 are located on the same side of the second refrigeration coil 1142 .

[0137] Combine Figure 1 As shown, Figure 1 One end of the compressor 121 is connected to the second refrigeration coil 1142 of the evaporator 114. Possible implementations include:

[0138] One end of the compressor 121 is connected to the second cold source air pipe 11421 of the evaporator 114 through the third distribution pipeline 126 .

[0139] Possible implementations of connecting the other end of the first one-way valve 123 to the second refrigeration coil 1142 of the evaporator 114 include: connecting the other end of the first one-way valve 123 to the second cold source liquid pipe 11422 of the evaporator 114 through the fourth distribution pipeline 127 .

[0140] The compressor and the first one-way valve are respectively connected to the second refrigeration coil of the evaporator through the third distribution pipeline and the fourth distribution pipeline, so that the second refrigeration coil of the evaporator, the compressor, the condenser and the first one-way valve constitute a second cold source system.

[0141] Alternatively, as Figure 1 As shown, the dual-cold-source air-conditioning system 10 further includes a second one-way valve 128 . The second one-way valve 128 is connected between the compressor 121 and the condenser 122 .

[0142] Alternatively, as Figure 2 As shown, an electronic expansion valve 124 may also be provided on the second cold source liquid pipe 11422 to achieve energy-saving optimization control in the second cold source system. The present embodiment does not limit the specific specifications of the electronic expansion valve 124, and corresponding specifications may be selected according to actual working conditions.

[0143] Furthermore, the cooling mode of the second cold source system can also be increased by adding a fluorine pump 125 to increase the fluorine pump natural cooling mode, that is, adding a variable frequency fluorine pump system. Figure 1 As shown, the second cold source system may further include a fluorine pump 125 , one end of the fluorine pump 125 is connected to one end of the first one-way valve 123 , and the other end of the fluorine pump 125 is connected to the other end of the first one-way valve 123 .

[0144] By adding a fluorine pump to the second cold source system and adding a fluorine pump natural cooling mode, the energy saving effect under low outdoor temperature conditions can be improved.

[0145] In one possible design, the evaporator of a dual-cooling system consists of two independent cooling coils. The gas-liquid pipes and the copper tubes within the coils in each cooling system have different layouts depending on the cooling mode. Furthermore, the evaporator can include, but is not limited to, flat, V-shaped, M-shaped, and W-shaped evaporators.

[0146] Through the above Figure 1 and Figure 2It can be seen that the dual-cold source air conditioning system includes a first cold source system and a second cold source system. The first cold source system includes a heat exchange unit, a refrigerant inlet pipe, a refrigerant outlet pipe, and a first refrigeration coil of the evaporator to form a refrigeration system. The second cold source system includes a second refrigeration coil of the evaporator, a compressor, a condenser, and a first one-way valve to form a refrigeration system. In which, the first end and the second end of the heat exchange unit are respectively connected to the refrigerant inlet pipe and the refrigerant outlet pipe, the third end and the fourth end of the heat exchange unit are respectively connected to the first refrigeration coil of the evaporator, one end of the compressor is connected to the second refrigeration coil of the evaporator, the other end of the compressor is connected to one end of the condenser, the other end of the condenser is connected to one end of the first one-way valve, and the other end of the first one-way valve is connected to the second refrigeration coil of the evaporator. Without removing the original cold source system, by adding a set of refrigeration coils to the evaporator and adding the second cold source system to the first cold source system, a dual-cold source air conditioning system is formed. Then, according to control requirements, the first cold source system and / or the second cold source system in the dual-cold source air conditioning system can be controlled to cool according to the target operating mode to achieve energy-saving operation, solving the problem of difficulty in reusing and upgrading old equipment rooms.

[0147] When the air conditioners of the two cooling source systems are in operation, different cooling modes can be selected based on different indoor heat loads, outdoor ambient temperatures, and other conditions. The first cooling source system is a multi-connected chilled water system, and the cooling mode is any of the following: chilled water cooling mode, gravity heat pipe cooling mode, or power heat pipe cooling mode. The cooling modes of the second cooling source system are compressor mechanical cooling mode and fluorine pump natural cooling mode. In the scenario of computer room renovation, the preferred operating mode is the cooling mode of the first cooling source system, which is the main cooling method and is marked as A. The compressor mechanical cooling mode in the cooling mode of the second cooling source system is the emergency operating mode and is marked as B. The fluorine pump natural cooling mode in the cooling mode of the second cooling source system is the energy-saving operating mode and is marked as C.

[0148] A dual-cooling-source air conditioning system can have five operating modes: A, B, C, A+B, and A+C. In actual operating conditions, different application logic can be implemented to meet different control requirements. For example, the five operating modes of a dual-cooling-source air conditioning system are defined as target operating modes. As can be seen, the target operating modes can include any of the preferred operating mode, emergency operating mode, or energy-saving operating mode, as well as combinations of individual modes. These combinations include a combination of the preferred operating mode with the emergency operating mode, and a combination of the emergency operating mode with the energy-saving mode.

[0149] The first cooling source system and / or the second cooling source system of the dual cooling source system can be controlled to operate in a target operating mode for cooling according to a control demand instruction. The control demand instruction is used to represent different control demands. For example, the control demand instruction may include a first control instruction or a second control instruction. The first control instruction is used to represent that the control demand of the dual cooling source air conditioning system is safety priority, that is, safety and reliability are the primary control targets of the dual cooling source air conditioning system, and safety of the dual cooling source air conditioning system is the current usage requirement. The second control instruction is used to represent that the control demand of the dual cooling source air conditioning system is energy saving priority, that is, the most energy-efficient operation is the primary control target of the dual cooling source air conditioning system, and energy saving of the dual cooling source air conditioning system is the current usage requirement.

[0150] The following is a detailed introduction to the different control strategies of the dual-cold-source air-conditioning system under different usage requirements of the computer room.

[0151] If the control demand instruction is the first control instruction, that is, the control demand of the dual-cold-source air-conditioning system is safety priority, and safety and reliability are the preferred control targets of the dual-cold-source air-conditioning system, the corresponding control strategy can use the first cold source system as the main cooling system and the second cold source system as the backup cooling system in abnormal situations. Possible implementation methods are as follows: Figure 3 As shown, Figure 3 This is a flow chart of a dual-cold-source air conditioning control method provided in an embodiment of the present application. The dual-cold-source air conditioning control method can be applied to the dual-cold-source air conditioning system provided in the above embodiment. Figure 3 As shown, the dual-cold-source air conditioning control method provided in the embodiment of the present application includes:

[0152] S101: Responding to a start instruction of a dual-cold-source air-conditioning system, determining whether a first cold-source system has an abnormality.

[0153] If the control demand instruction is the first control instruction, after receiving the first control instruction, the dual-cold-source air-conditioning system responds to the dual-cold-source air-conditioning system start instruction and first determines whether there is an abnormality in the first cold-source system of the dual-cold-source air-conditioning system. After determination, if there is an abnormality in the first cold-source system, step S102 is executed to activate the emergency operation mode or energy-saving operation mode of the second cold-source system for cooling. Conversely, if there is no abnormality in the first cold-source system, step S103 is executed, i.e., controlling the first cold-source system to cool in the preferred operation mode according to the first control instruction, that is, the first cold-source system to cool in any of the cooling modes: chilled water cooling mode, gravity heat pipe cooling mode, or power heat pipe cooling mode.

[0154] S102: Control the second cooling source system according to the first control instruction to perform cooling in an emergency operation mode or an energy-saving operation mode.

[0155] When it is determined that there is an abnormality in the first cold source system, the second cold source system of the dual cold source air conditioning system serves as a backup cooling system. The dual cold source air conditioning system starts the second cold source system in its emergency operation mode or energy-saving operation mode for cooling according to the first control instruction.

[0156] In some embodiments, possible implementations of step S102 include:

[0157] Determine whether the startup state of the second cold source system meets the startup conditions of the energy-saving operation mode. For example, the fluorine pump of the second cold source system requires corresponding startup conditions to run in the natural cooling mode. Determine whether the current startup state of the second cold source system meets the startup conditions of the fluorine pump running in the natural cooling mode. If so, the fluorine pump runs in the natural cooling mode, that is, the second cold source system is controlled to cool in the energy-saving operation mode; otherwise, if not, the second cold source system is controlled to start the emergency operation mode for cooling.

[0158] It can be seen that when an abnormality occurs in the first cooling source system, the specific operating mode of the second cooling source system to be used for cooling depends on whether the startup state of the second cooling source system meets the startup conditions corresponding to the fluorine pump operating in the natural cooling mode. In some embodiments, the startup conditions can be, for example, the outdoor temperature meeting a preset low temperature condition.

[0159] S103: Control the first cooling source system according to the first control instruction to perform cooling in the preferred operation mode.

[0160] After determining that there is no abnormality in the first cold source system, the first cold source system serves as the main refrigeration system, and the dual-cold source air-conditioning system turns on the first cold source system according to the first control instruction to perform cooling in its preferred operation mode.

[0161] From the description of steps S101 to S103, it can be seen that if the control requirement is to prioritize safety and reliability, the highest reliability is achieved by backing up the two cooling source systems, wherein the preferred operating mode of the first cooling source system is used as the main cooling mode, and the second cooling source system serves as a backup cooling mode in the event of an abnormality of the first cooling source system.

[0162] After step S103 , that is, during the cooling process of the first cooling source system in the preferred operation mode, if the first cooling source system fails or there is an abnormality, step S104 is further executed.

[0163] S104: If an abnormality occurs in the first cooling source system, a first switching instruction is generated, and the first cooling source system is switched to the second cooling source system in response to the first switching instruction.

[0164] During the cooling process of the first cold source system in the preferred operating mode, if the first cold source system has an abnormality, the dual cold source air conditioning system generates a first switching instruction and, in response to the first switching instruction, switches the currently operating refrigeration system to the backup refrigeration system, that is, switches the first cold source system to the second cold source system, so as to start the second cold source system to cool in the emergency operation mode or the energy-saving operation mode, that is, execute the emergency operation mode or the energy-saving operation mode in step S102 through step S104. Wherein, after switching from the first cold source system to the second cold source system, whether the second cold source system cools in the emergency operation mode or the energy-saving operation mode depends on whether the startup state of the second cold source system meets the startup conditions of the energy-saving operation mode. If so, after switching to the second cold source system, the second cold source system cools in the energy-saving operation mode, that is, cools in the natural cooling mode of the fluorine pump; if not, when switching to the second cold source system, the second cold source system cools in the emergency operation mode, that is, operates in the mechanical cooling mode of the compressor.

[0165] After step S104, that is, after switching from the first cooling source system to the second cooling source system, if the first cooling source system returns to normal, for example, the first cooling source system recovers from a fault, the dual cooling source air conditioning control method provided in the embodiment of the present application further includes:

[0166] S105: If the first cooling source system returns to normal, a second switching instruction is generated, and the second cooling source system is switched to the first cooling source system in response to the second switching instruction.

[0167] When switching from the first cold source system to the second cold source system, and the second cold source system is cooling in the emergency operation mode or the energy-saving operation mode, if the fault of the first cold source system is resolved, that is, the abnormality is restored to normal, the dual-cold source air-conditioning system generates a second switching instruction, and responds to the second switching instruction to switch from the second cold source system to the first cold source system, so that the first cold source system is cooling in the preferred operation mode. That is, after the abnormality of the first cold source system is restored to normal, the cooling system of the dual-cold source air-conditioning system is switched back from the second cold source system to the first cold source system, that is, it switches back to cooling in the preferred operation mode in step S103 through step S105.

[0168] exist Figure 3 In the dual-cold source air-conditioning control method shown, regardless of whether the first cold source system or the second cold source system is in the cooling process, if the dual-cold source air-conditioning system receives its shutdown instruction, it responds to the shutdown instruction and enters the shutdown state from the current operating mode, that is, the dual-cold source air-conditioning system responds to the shutdown instruction to shut down the currently running first cold source system or the second cold source system, so that the dual-cold source air-conditioning system is in the shutdown state.

[0169] Through the above Figure 3From the description of the illustrated embodiment, it can be seen that the dual-cold source air-conditioning control method provided by the embodiment of the present application uses the first cold source system as the main cooling system and the second cold source system as the backup cooling system in abnormal situations when the control requirement of the dual-cold source air-conditioning system in the computer room is a safety priority. When an abnormality occurs in one of the cooling systems, it can be switched to the other cooling system in time. The two cooling systems back up each other to achieve the highest reliability of the dual-cold source air-conditioning system.

[0170] Figure 3 When the safety priority shown is the control target of the dual-cold source air-conditioning system, the corresponding control idea can be as follows: Figure 4 As shown in Route 1 to Route 6, specifically:

[0171] Route 1: When the dual-cooling source air conditioner is started, if there is no abnormality in the first cooling source system, the first cooling system will enter the preferred operation mode (such as A) for cooling. If there is an abnormality in the first cooling source system, the second cooling source system will enter the emergency operation mode (such as B) or energy-saving operation mode (such as C) for cooling.

[0172] Route 2: The dual-cooling-source air-conditioning system receives a shutdown command and responds to the shutdown command to shut down the current operating mode, so that the dual-cooling-source air-conditioning system is in a shutdown state. That is, in response to the shutdown command, the dual-cooling-source air-conditioning system enters a shutdown state (such as NA) from the currently running preferred operating mode (such as A), the emergency operating mode (such as B), or the energy-saving operating mode (such as C).

[0173] Route 3 and Route 4: During operation in the preferred operating mode (as indicated by A), if an abnormality occurs in the first cooling source system, the first cooling source system is switched to the second cooling source system in response to a first switching instruction, so that the second cooling source system operates in the emergency operating mode (as indicated by B) or the energy-saving operating mode (as indicated by C). Switching from the preferred operating mode to the emergency operating mode is Route 3, and switching from the preferred operating mode to the energy-saving operating mode is Route 4.

[0174] Route 5 and Route 6: When the second cooling source system is operating, if the first cooling source system returns to normal, the system switches from the second cooling source system to the first cooling source system in response to the second switching instruction. Route 5 is when the second cooling source system switches from the energy-saving operating mode (e.g., C) to the preferred operating mode (e.g., A) of the first cooling source system, and Route 6 is when the second cooling source system switches from the emergency operating mode (e.g., B) to the preferred operating mode (e.g., A) of the first cooling source system.

[0175] If the control demand instruction is the second control instruction, that is, the control demand of the dual-cold-source air-conditioning system is energy-saving priority, and the most energy-saving operation is the preferred control target of the dual-cold-source air-conditioning system, its corresponding control strategy requires the first cold source system and the second cold source system to cool together to achieve the most energy-saving operation. Therefore, in response to the control demand instruction, the first cold source system and / or the second cold source system of the dual-cold-source air-conditioning system is controlled to cool according to the target operation mode. The possible implementation methods are as follows: Figure 5 As shown, Figure 5 This is a flow chart of another dual-cold source air conditioning control method provided in an embodiment of the present application. This dual-cold source air conditioning control method can be applied to the dual-cold source air conditioning system provided in the above embodiment. Figure 5 As shown, the dual-cold-source air conditioning control method provided in the embodiment of the present application includes:

[0176] S201: Responding to a start instruction of the dual-cold-source air-conditioning system, determining whether the start-up state of the second cold-source system meets the start-up conditions of the energy-saving operation mode.

[0177] Since the energy-saving mode of the second cooling source system is more energy-efficient than the emergency mode, in scenarios where energy conservation is the priority, the energy-saving mode should be considered first. Therefore, after receiving the start-up instruction, the dual cooling source air conditioning system responds to the start-up instruction to determine whether the startup status of the second cooling source system meets the startup conditions for its energy-saving mode. If so, step S202 is executed; otherwise, step S203 is executed.

[0178] Among them, judging whether the startup state of the second cold source system meets the startup conditions of the energy-saving operation mode can be specifically judging whether the startup state of the second cold source system reaches the startup conditions corresponding to the natural cooling mode of the fluorine pump. The startup conditions can be, for example, that the outdoor temperature meets the preset low temperature conditions.

[0179] S202: Control the second cooling source system to cool in an energy-saving operation mode according to the second control instruction.

[0180] After judgment, if the startup state of the second cold source system meets the startup conditions of the energy-saving operation mode, the dual-cold source air-conditioning system starts the second cold source system according to the second control instruction to cool it in the energy-saving operation mode.

[0181] S203: Control the first cooling source system to cool in the preferred operating mode according to the second control instruction.

[0182] After judgment, if the startup state of the second cold source system does not meet the startup conditions of the energy-saving operation mode, the dual cold source air-conditioning system starts the first cold source system according to the second control instruction to cool it in the preferred operation mode.

[0183] Furthermore, after step S202 or step S203, that is, during the process in which the first cold source system is cooling in the preferred operation mode or the second cold source system is cooling in the energy-saving operation mode, if the first cold source system fails or an abnormality occurs, or the energy-saving operation mode is abnormal, the dual-cold source air conditioning control method provided in the embodiment of the present application further includes:

[0184] S204: Generate a third switching instruction, and in response to the third switching instruction, switch the preferred operation mode or the energy-saving operation mode to the emergency operation mode, and control the second cold source system to cool in the emergency operation mode.

[0185] During the process of the first cold source system cooling in the preferred operating mode or the second cold source system cooling in the energy-saving operating mode, if the first cold source system fails and there is an abnormality or the energy-saving operating mode has an abnormality, the dual cold source air-conditioning system generates a third switching instruction, and responds to the third switching instruction to switch the current operating mode, i.e., the preferred operating mode or the energy-saving operating mode, to the emergency operating mode of the second cold source system, so that the second cold source system cools in the emergency operating mode and starts emergency cooling.

[0186] In some embodiments, after step S203, during the cooling process of the first cold source system in the preferred operating mode, the cooling capacity of the first cold source system may be insufficient. Therefore, the dual-cold source air conditioning control method provided in the embodiment of the present application further includes:

[0187] S205: Determine whether the cooling capacity of the first cooling source system meets the first preset cooling capacity.

[0188] During cooling by the first cooling source system in the preferred operating mode, it is determined whether the cooling capacity of the first cooling source system has reached a first preset cooling capacity. If so, cooling in the preferred operating mode continues, i.e., step S203 is executed. Conversely, if not, step S206 is further executed. In some embodiments, the first preset cooling capacity can be preset in advance based on actual operating conditions. The specific content of the first preset cooling capacity can be determined based on parameters such as the cooling capacity of the first cooling source system and the cooling area of ​​the computer room, which is not limited in this embodiment of the present application.

[0189] S206: Turn on the second cold source system to cool in the emergency operation mode, and control the dual-cold source air-conditioning system to operate in the first dual mode.

[0190] After the judgment in step S205, if the cooling capacity of the single refrigeration system of the first cold source system does not reach the first preset cooling capacity, the emergency operation mode refrigeration of the second cold source system is further started, so that the first cold source system and the second cold source system are cooled together, and the dual-cold source air-conditioning system is operated in a first dual mode, and the first dual mode includes the preferred operation mode of the first cold source system and the emergency operation mode of the second cold source system.

[0191] Since the energy-saving mode is the most energy-efficient, in some embodiments, after step S203, while the first cooling source system is cooling in the preferred operating mode, it is possible to determine whether the startup state of the second cooling source system meets the startup conditions of the energy-saving mode to determine whether the energy-saving mode can be enabled first. If so, step S207 may be further executed after step S203; if not, step S203 may continue to be executed.

[0192] S207: If the startup state of the second cold source system meets the startup condition of the energy-saving operation mode, the second cold source system is started to cool in the energy-saving operation mode, and the dual-cold source air-conditioning system is controlled to operate in the second dual mode.

[0193] If during the cooling process of the first cold source system, the startup state of the second cold source system reaches the startup condition of the energy-saving operation mode, the energy-saving operation mode of the second cold source system is further started, so that the first cold source system and the second cold source system are cooled together, and the dual-cold source air-conditioning system is operated in the second dual mode, which includes the preferred operation mode of the first cold source system and the energy-saving operation mode of the second cold source system.

[0194] Furthermore, after step S206, that is, when the dual-cold-source air-conditioning system is operating in the first dual mode, if the first cold-source system fails or an abnormality occurs, step S208 is further executed.

[0195] S208: Generate a fourth switching instruction, respond to the fourth switching instruction, switch the first dual mode to the emergency operation mode or the energy-saving operation mode according to the startup state of the second cold source system, and control the second cold source system to cool in the emergency operation mode or the energy-saving operation mode.

[0196] When the dual-cold source air-conditioning system is operating in the first dual mode, if there is an abnormality in the first cold source system, the dual-cold source air-conditioning system generates a fourth switching instruction, and responds to the fourth switching instruction to switch the dual refrigeration system to a single refrigeration system according to the startup status of the second cold source system, that is, responds to the fourth switching instruction to switch the first dual mode to the emergency operation mode or energy-saving operation mode of the second cold source system according to the startup status of the second cold source system, and controls the second cold source system to cool in its emergency operation mode or energy-saving operation mode.

[0197] In some embodiments, possible implementations of switching the dual refrigeration system to a single refrigeration system according to the startup state of the second cooling source system in response to the fourth switching instruction include:

[0198] Determine whether the startup state of the second cold source system meets the startup conditions of the energy-saving operation mode. If so, respond to the fourth switching instruction to switch the first dual mode to the energy-saving operation mode, control the second cold source system to cool in its energy-saving operation mode, and realize the switching of the energy-saving operation mode from the dual refrigeration system to the single refrigeration system; conversely, if not, respond to the fourth switching instruction to switch the first dual mode to the emergency operation mode, control the second cold source system to cool in the emergency operation mode, and realize the switching from the joint cooling of the dual refrigeration system to the emergency operation mode cooling in the single refrigeration system.

[0199] In some embodiments, after step S206, that is, when the dual-cold-source air-conditioning system is operating in the first dual mode, if the second cold-source system fails or an abnormality occurs, step S209 is further executed.

[0200] S209: Generate a fifth switching instruction, switch the first dual mode to the primary operation mode in response to the fifth switching instruction, and control the first cold source system to cool in the primary operation mode.

[0201] When the dual-cold source air-conditioning system is operating in the first dual mode, if there is an abnormality in the second cold source system, the dual-cold source air-conditioning system generates a fifth switching instruction, responds to the fifth switching instruction to switch the first dual mode to the preferred operating mode, controls the first cold source system to cool in the preferred operating mode, and realizes the switching from the joint cooling of the dual refrigeration system to the preferred operating mode cooling in the single refrigeration system.

[0202] It is understandable that after step S207, that is, when the dual-cold-source air-conditioning system is operating in the second dual mode, if the first cold-source system fails or an abnormality occurs, step S2010 is further executed.

[0203] S2010: Generate a sixth switching instruction, respond to the sixth switching instruction, switch the second dual mode to the emergency operation mode or the energy-saving operation mode according to the startup state of the second cold source system, and control the second cold source system to cool in the emergency operation mode or the energy-saving operation mode.

[0204] When the dual-cold source air-conditioning system is operating in the second dual mode, if there is an abnormality in the first cold source system, the dual-cold source air-conditioning system generates a sixth switching instruction, and responds to the sixth switching instruction to switch the dual refrigeration system to a single refrigeration system according to the startup status of the second cold source system, that is, responds to the sixth switching instruction to switch the second dual mode to the emergency operation mode or energy-saving operation mode of the second cold source system according to the startup status of the second cold source system, and controls the second cold source system to cool in its emergency operation mode or energy-saving operation mode.

[0205] In some embodiments, possible implementations of switching the dual refrigeration system to a single refrigeration system according to the startup state of the second cooling source system in response to the sixth switching instruction include:

[0206] Determine whether the startup state of the second cold source system meets the startup conditions of the energy-saving operation mode. If so, respond to the sixth switching instruction to switch the second dual mode to the energy-saving operation mode, control the second cold source system to cool in its energy-saving operation mode, and realize the switching of the energy-saving operation mode from the dual refrigeration system to the single refrigeration system; conversely, if not, respond to the sixth switching instruction to switch the second dual mode to the emergency operation mode, control the second cold source system to cool in the emergency operation mode, and realize the switching of the dual refrigeration system to the emergency operation mode cooling.

[0207] In some embodiments, after step S207, that is, when the dual-cold-source air-conditioning system is operating in the second dual mode, if the second cold-source system fails or is abnormal, step S2011 is further executed.

[0208] S2011: Generate a seventh switching instruction, switch the second dual mode to the primary operation mode in response to the seventh switching instruction, and control the first cold source system to cool in the primary operation mode.

[0209] When the dual-cold source air-conditioning system is operating in the second dual mode, if there is an abnormality in the second cold source system, the dual-cold source air-conditioning system generates a seventh switching instruction, responds to the seventh switching instruction to switch the second dual mode to the preferred operating mode, controls the first cold source system to cool in the preferred operating mode, and realizes the switching from the joint cooling of the dual refrigeration system to the preferred operating mode cooling in the single refrigeration system.

[0210] Furthermore, after step S208 and step S2010, that is, during the cooling process using a single cooling system, steps S2012 to S2013 are further included.

[0211] S2012: Determine whether the cooling capacity of the second cooling source system meets the second preset cooling capacity.

[0212] S2013: Determine whether the cooling capacity of the second cooling source system meets a third preset cooling capacity.

[0213] If the judgment in step S2012 or S2013 is no, execute S2014: start the first cooling source system to cool in the preferred operation mode.

[0214] If the second cold source system is cooling in the emergency operation mode in step S208 and step S2010, it is further determined whether the cooling capacity of the second cold source system meets the second preset cooling capacity. If so, the current cooling mode in step S208 and step S2010 is maintained; if not, step S2014 is further executed to make the dual-cold source air-conditioning system operate in the first dual mode in step S206, that is, switching the single cooling system to the dual cooling system for joint cooling.

[0215] If the second cold source system is cooling in the energy-saving operation mode in step S208 and step S2010, it is further determined whether the cooling capacity of the second cold source system meets the third preset cooling capacity. If so, the current cooling mode in step S208 and step S2010 is maintained; if not, step S2014 is further executed to make the dual-cold source air-conditioning system operate in the second dual mode in step S207, that is, switching the single cooling system to the dual cooling system for joint cooling.

[0216] In some embodiments, the second preset cooling capacity can be preset based on the cooling capacity of the second cold source system in an emergency operation mode, which is not limited in this embodiment of the present application. The third preset cooling capacity can be preset based on the cooling capacity of the second cold source system in an energy-saving operation mode, which is not limited in this embodiment of the present application.

[0217] Furthermore, after step S204, that is, when the second cold source system is cooling in the emergency operation mode, step S2015 may be further included.

[0218] S2015: Determine whether the startup state of the second cold source system meets the startup conditions of the energy-saving operation mode.

[0219] During the cooling process of the second cold source system in the emergency operation mode, it is determined whether the startup state of the second cold source system meets the startup conditions of the energy-saving operation mode. If so, step S2016 is executed to adopt the energy-saving operation mode for cooling to achieve the most energy-saving operation; otherwise, if not, step S204 is continued to be maintained for cooling in the emergency operation mode.

[0220] S2016: Generate an eighth switching instruction, switch the emergency operation mode to the energy-saving operation mode in response to the eighth switching instruction, and control the second cold source system to cool in the energy-saving operation mode.

[0221] During the cooling process of the second cold source system in the emergency operation mode, if the startup state of the second cold source system reaches the startup condition of the energy-saving operation mode, since the energy-saving operation mode is the most energy-saving operation mode, an eighth switching instruction can be generated. The dual-cold source air-conditioning system responds to the eighth switching instruction to switch from the emergency operation mode of the second cold source system to the energy-saving operation mode for cooling, realizing the switching from the emergency operation mode to the energy-saving operation mode, so that the dual-cold source air-conditioning system cools in the most energy-saving operation mode.

[0222] Furthermore, in step S2016 and the cooling process of the second cold source system in the energy-saving operation mode, the dual cold source air conditioning control method provided in the embodiment of the present application may further include step S2017. Figure 5 Only the process after the cooling process in the energy-saving operation mode in step S2016 is shown.

[0223] S2017: Determine whether the cooling capacity of the second cooling source system meets a fourth preset cooling capacity.

[0224] During the cooling process of the second cold source system in the energy-saving operation mode, it is determined whether the cooling capacity of the second cold source system reaches the fourth preset cooling capacity. If not, and if the first cold source system is abnormal and cannot operate, step S2018 is executed; conversely, if the cooling capacity of the second cold source system reaches the fourth preset cooling capacity, step S2016 or the aforementioned related steps are continued to be maintained in the energy-saving operation mode for cooling by the second cold source system.

[0225] In some embodiments, the fourth preset cooling capacity can be preset according to the cooling capacity of the second cooling source system in the energy-saving operation mode when an abnormality occurs in the first cooling source system, which is not limited in this embodiment of the present application.

[0226] S2018: When an abnormality occurs in the first cooling source system, a ninth switching instruction is generated. In response to the ninth switching instruction, the energy-saving operation mode is switched to the emergency operation mode, and the second cooling source system is controlled to cool in the emergency operation mode.

[0227] During the cooling process of the second cold source system in the energy-saving operation mode, if the cooling capacity of the second cold source system does not reach the fourth preset cooling capacity, and the first cold source system is abnormal and cannot operate at this time, a ninth switching instruction is generated, and the dual-cold source air-conditioning system responds to the ninth switching instruction to switch from the energy-saving operation mode of the second cold source system to the emergency operation mode for cooling, realizing the switching from the energy-saving operation mode to the emergency operation mode, so that the dual-cold source air-conditioning system cools in the emergency operation mode.

[0228] exist Figure 5 In the dual-cold source air-conditioning control method shown, regardless of whether the first cold source system or the second cold source system is cooling, or the first cold source system and the second cold source system are cooling together, if the dual-cold source air-conditioning system receives its shutdown command, it responds to the shutdown command and enters the shutdown state from the current operating mode, that is, the dual-cold source air-conditioning system responds to the shutdown command to shut down the currently running first cold source system and / or second cold source system, so that the dual-cold source air-conditioning system is in a shutdown state.

[0229] Through the above Figure 5 As can be seen from the description of the illustrated embodiment, the dual-cooling-source air conditioning control method provided by the embodiment of the present application operates in the most energy-efficient mode possible when the control requirement for the dual-cooling-source air conditioning system in the computer room prioritizes energy conservation. When cooling capacity is insufficient or energy conservation is required, both cooling systems are activated and operated simultaneously. If one cooling system fails, the other cooling system is activated to provide cooling, maintaining reliability while operating in the most energy-efficient mode possible.

[0230] Figure 5When the energy-saving priority shown is the control target of the dual-cold source air-conditioning system, the corresponding control idea can be as follows: Figure 6 As shown in Route 1 to Route 6, specifically:

[0231] Route 1: When the air conditioner is started, if the startup status of the second cooling source system meets the startup conditions of the energy-saving operation mode, the second cooling source system is used in its energy-saving operation mode (such as C) for cooling; otherwise, that is, the startup conditions of the energy-saving operation mode are not met, the first cooling source system is turned on in its preferred operation mode (such as A) for cooling; and if there is an abnormality in the first cooling source system or the energy-saving operation mode, the emergency operation mode (such as C) of the second cooling source system is activated for cooling;

[0232] Route 2: The dual-cooling-source air-conditioning system receives a shutdown command and responds to the shutdown command to shut down the current operating mode, so that the dual-cooling-source air-conditioning system is in a shutdown state. That is, in response to the shutdown command, the system enters a shutdown state (such as NA) from the currently running preferred operating mode (such as A), the emergency operating mode (such as B), the energy-saving operating mode (such as C), or the first dual mode (such as A+B) or the second dual mode (such as A+C);

[0233] Route 3: When the cooling capacity of the first cold source system is insufficient, or it is necessary to enter the energy-saving operation mode, that is, the startup state of the second cold source system meets the startup conditions of the energy-saving operation mode, the second cold source system is further started on the basis of the cooling of the first cold source system to operate the first dual mode (such as A+B) or the second dual mode (such as A+C) cooling. The specific first dual mode or the second dual mode depends on whether the startup state meets the startup conditions of the energy-saving operation mode;

[0234] Route 4: When dual refrigeration systems are operating together, if one refrigeration system fails or has an abnormality, it is necessary to switch from the dual refrigeration system to a single refrigeration system. For example, when cooling in the first dual mode (such as A+B), it can be switched to the preferred operation mode (such as A) or the emergency operation mode (such as B); when cooling in the second dual mode (such as A+C), it can be switched to the preferred operation mode (such as A) or the energy-saving operation mode (such as C). Obviously, when switching to the energy-saving operation mode, the startup state of the second cold source system must meet the startup conditions of the energy-saving operation mode;

[0235] Route 5: When the cooling capacity of the second cooling source system is insufficient, the first cooling source system is further activated based on the cooling of the second cooling source system to operate in the first dual mode (such as A+B) or the second dual mode (such as A+C). The specific operation mode is the first dual mode or the second dual mode, depending on whether the startup state meets the startup conditions of the energy-saving operation mode.

[0236] Route 6: When the first cold source system fails and an abnormality occurs, making it unable to operate in mode A, in the dual-cold source air-conditioning system, only the second cold source system can operate. If the startup status of the second cold source system meets the startup conditions of the energy-saving operation mode (as indicated by C), it can switch from the emergency operation mode (as indicated by B) of the second cold source system to the energy-saving operation mode (as indicated by C) for cooling. Conversely, if the cooling capacity of the energy-saving operation mode (as indicated by C) is insufficient, it can switch from the energy-saving operation mode (as indicated by C) of the second cold source system to the emergency operation mode (as indicated by B), thereby realizing mutual switching between the emergency operation mode (as indicated by B) and the energy-saving operation mode (as indicated by C).

[0237] Figure 7 This is a schematic diagram of the structure of a control device for a dual-cold source air conditioning system provided in an embodiment of the present application. The dual-cold source air conditioning system includes: a first cold source system and a second cold source system; the first cold source system includes a heat exchange unit, a refrigerant water inlet pipe, a refrigerant water outlet pipe, and a refrigeration system formed by the first refrigeration coil of the evaporator; the second cold source system includes a refrigeration system formed by the second refrigeration coil of the evaporator, a compressor, a condenser, and a first one-way valve. Figure 7 As shown, the control device 400 of the dual-cold-source air-conditioning system provided in the embodiment of the present application includes:

[0238] The control module 401 is used to control the first cold source system and / or the second cold source system of the dual cold source air-conditioning system to cool according to the target operating mode according to the control demand instruction. The target operating mode includes any one of the preferred operating mode, emergency operating mode or energy-saving operating mode, and a combination of individual modes.

[0239] Among them, the first end and the second end of the heat exchange unit are respectively connected to the refrigerant inlet pipe and the refrigerant outlet pipe, and the third end and the fourth end of the heat exchange unit are respectively connected to the first refrigeration coil of the evaporator; one end of the compressor is connected to the second refrigeration coil of the evaporator, the other end of the compressor is connected to one end of the condenser, the other end of the condenser is connected to one end of the first one-way valve, and the other end of the first one-way valve is connected to the second refrigeration coil of the evaporator.

[0240] In one possible design, the first refrigeration coil of the evaporator includes a first cold source gas pipe and a first cold source liquid pipe, and the third end and the fourth end of the heat exchange unit are respectively connected to the first refrigeration coil of the evaporator, including:

[0241] The third end of the heat exchange unit is connected to the first cold source air pipe, which is the refrigerant outlet; the fourth end of the heat exchange unit is connected to the first cold source liquid pipe, which is the refrigerant inlet.

[0242] In one possible design, the first cold source system further includes a first distribution pipeline and a second distribution pipeline, and the third end of the heat exchange unit is connected to the first cold source air pipe, including: the third end of the heat exchange unit is connected to the first cold source air pipe through the first distribution pipeline;

[0243] The fourth end of the heat exchange unit is connected to the first cold source liquid pipe, which includes: the fourth end of the heat exchange unit is connected to the first cold source liquid pipe through the second distribution pipeline.

[0244] In one possible design, the preferred operating mode includes a cooling mode of the first cooling source system, and the cooling mode of the first cooling source system includes any one of a chilled water cooling mode, a gravity heat pipe cooling mode, or a power heat pipe cooling mode.

[0245] In one possible design, the second refrigeration coil of the evaporator includes a second cold source air pipe and a second cold source liquid pipe, and the second cold source air pipe and the second cold source liquid pipe are located on the same side of the second refrigeration coil;

[0246] One end of the compressor is connected to the second refrigeration coil of the evaporator, including: one end of the compressor is connected to the second cold source air pipe;

[0247] The other end of the first one-way valve is connected to the second refrigeration coil of the evaporator, including: the other end of the first one-way valve is connected to the second cold source liquid pipe.

[0248] In one possible design, the second cold source system further includes a third distribution pipeline and a fourth distribution pipeline, and one end of the compressor is connected to the second cold source air pipe, including: one end of the compressor is connected to the second cold source air pipe through the third distribution pipeline;

[0249] The other end of the first one-way valve is connected to the second cold source liquid pipe, comprising: the other end of the first one-way valve is connected to the second cold source liquid pipe through a fourth distribution pipeline.

[0250] In a possible design, the emergency operation mode includes a compressor mechanical refrigeration mode in the refrigeration mode of the second cold source system.

[0251] In one possible design, the second cold source system further includes: a fluorine pump, the fluorine pump constituting a fluorine pump natural cooling mode in the refrigeration mode of the second cold source system, and the energy-saving operation mode includes the fluorine pump natural cooling mode;

[0252] One end of the fluorine pump is connected to one end of the first one-way valve, and the other end of the fluorine pump is connected to the other end of the first one-way valve.

[0253] In one possible design, if the control demand instruction is the first control instruction, the control module 401 is specifically configured to:

[0254] Responding to a start instruction of the dual-cold-source air-conditioning system, determining whether there is an abnormality in the first cold-source system;

[0255] If not, controlling the first cooling source system to cool in the preferred operating mode according to the first control instruction;

[0256] If yes, controlling the second cooling source system to cool in an emergency operation mode or an energy-saving operation mode according to the first control instruction;

[0257] The first control instruction is used to indicate that the control requirement of the dual-cold-source air-conditioning system is a safety priority.

[0258] In one possible design, the control module 401 is further used to: if a shutdown instruction of the dual-cold source air-conditioning system is received, shut down the first cold source system or the second cold source system in response to the shutdown instruction, so that the dual-cold source air-conditioning system is in a shutdown state.

[0259] In one possible design, the control module 401 is further configured to:

[0260] If there is an abnormality in the first cooling source system, a first switching instruction is generated, and the first cooling source system is switched to the second cooling source system in response to the first switching instruction to control the second cooling source system to cool in an emergency operation mode or an energy-saving operation mode.

[0261] In one possible design, the control module 401 is further configured to:

[0262] If the first cooling source system returns to normal, a second switching instruction is generated, and the second cooling source system is switched to the first cooling source system in response to the second switching instruction to control the first cooling source system to cool in the preferred operating mode.

[0263] In one possible design, the control module 401 is further configured to:

[0264] Determining whether the startup state of the second cold source system meets the startup conditions of the energy-saving operation mode;

[0265] If yes, control the second cooling source system to cool in energy-saving operation mode;

[0266] If not, the second cooling source system is controlled to operate in an emergency mode for cooling.

[0267] In one possible design, if the control demand instruction is the second control instruction, the control module 401 is further configured to:

[0268] In response to a start instruction of the dual-cold-source air-conditioning system, determining whether the start state of the second cold-source system meets the start condition of the energy-saving operation mode;

[0269] If yes, controlling the second cooling source system to cool in an energy-saving operation mode according to the second control instruction;

[0270] If not, controlling the first cooling source system to cool in the preferred operating mode according to the second control instruction;

[0271] The second control instruction is used to indicate that the control requirement of the dual-cold-source air-conditioning system is energy-saving priority.

[0272] In one possible design, the control module 401 is further configured to:

[0273] If there is an abnormality in the first cold source system or the energy-saving operation mode, a third switching instruction is generated. In response to the third switching instruction, the preferred operation mode or the energy-saving operation mode is switched to the emergency operation mode to control the second cold source system to cool in the emergency operation mode.

[0274] In one possible design, the control module 401 is further configured to:

[0275] Determining whether the cooling capacity of the first cooling source system meets a first preset cooling capacity;

[0276] If not, the second cold source system is turned on to cool in the emergency operation mode to control the dual-cold source air-conditioning system to operate in the first dual mode, which includes the preferred operation mode and the emergency operation mode.

[0277] In one possible design, the control module 401 is also used to: if the startup state of the second cold source system meets the startup conditions of the energy-saving operation mode, start the second cold source system to cool in the energy-saving operation mode, so as to control the dual-cold source air-conditioning system to operate in the second dual mode, and the second dual mode includes the preferred operation mode and the energy-saving operation mode.

[0278] In one possible design, the control module 401 is further configured to: if an abnormality occurs in the first cold source system, generate a fourth switching instruction; in response to the fourth switching instruction, switch the first dual mode to the emergency operation mode or the energy-saving operation mode according to the startup state of the second cold source system, and control the second cold source system to cool in the emergency operation mode or the energy-saving operation mode;

[0279] If there is an abnormality in the second cold source system, a fifth switching instruction is generated, and in response to the fifth switching instruction, the first dual mode is switched to the primary operation mode, and the first cold source system is controlled to cool in the primary operation mode.

[0280] In one possible design, the control module 401 is further configured to: determine whether the startup state of the second cold source system meets the startup conditions of the energy-saving operation mode;

[0281] If so, switching the first dual mode to the energy-saving operation mode in response to the fourth switching instruction to control the second cold source system to cool in the energy-saving operation mode;

[0282] If not, the first dual mode is switched to the emergency operation mode in response to the fourth switching instruction, so as to control the second cold source system to cool in the emergency operation mode.

[0283] In one possible design, the control module 401 is further configured to:

[0284] If an abnormality occurs in the first cold source system, a sixth switching instruction is generated, and in response to the sixth switching instruction, the second dual mode is switched to the emergency operation mode or the energy-saving operation mode according to the startup state of the second cold source system, and the second cold source system is controlled to cool in the emergency operation mode or the energy-saving operation mode;

[0285] If there is an abnormality in the second cold source system, a seventh switching instruction is generated, and in response to the seventh switching instruction, the second dual mode is switched to the primary operation mode, and the first cold source system is controlled to cool in the operation mode.

[0286] In one possible design, the control module 401 is further configured to:

[0287] Determining whether the startup state of the second cold source system meets the startup conditions of the energy-saving operation mode;

[0288] If yes, switching the second dual mode to the energy-saving operation mode in response to the sixth switching instruction to control the second cold source system to cool in the energy-saving operation mode;

[0289] If not, the second dual mode is switched to the emergency operation mode in response to the sixth switching instruction, so as to control the second cold source system to cool in the emergency operation mode.

[0290] In one possible design, the control module 401 is further configured to: determine whether the cooling capacity of the second cooling source system meets a second preset cooling capacity;

[0291] If not, the first cold source system is turned on to cool in the preferred operation mode, so as to control the dual-cold source air-conditioning system to operate in the first dual mode.

[0292] In one possible design, the control module 401 is further configured to: determine whether the cooling capacity of the second cooling source system meets a third preset cooling capacity;

[0293] If not, the first cold source system is turned on to cool in the preferred operating mode, so that the dual-cold source air-conditioning system operates in the second dual mode.

[0294] In one possible design, the control module 401 is further configured to: determine whether the startup state of the second cold source system meets the startup conditions of the energy-saving operation mode;

[0295] If so, an eighth switching instruction is generated, and in response to the eighth switching instruction, the emergency operation mode is switched to the energy-saving operation mode to control the second cold source system to cool in the energy-saving operation mode.

[0296] In one possible design, the control module 401 is further configured to: determine whether the cooling capacity of the second cooling source system meets a fourth preset cooling capacity;

[0297] If not, and there is an abnormality in the first cold source system, a ninth switching instruction is generated, and in response to the ninth switching instruction, the energy-saving operation mode is switched to the emergency operation mode to control the second cold source system to cool in the emergency operation mode.

[0298] The control device of the dual-cold-source air-conditioning system provided in the embodiment of the present application can execute the corresponding steps of the control method of the dual-cold-source air-conditioning system in the above method embodiment. Its implementation principle and technical effects are similar and will not be repeated here.

[0299] Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 8 As shown, the electronic device 500 may include: a processor 501 and a memory 502 communicatively connected to the processor 501 .

[0300] The memory 502 is used to store programs. Specifically, the programs may include program codes, and the program codes include computer-executable instructions.

[0301] The memory 502 may include a high-speed RAM memory, and may also include a non-volatile memory (NoN-volatile memory), such as at least one disk memory.

[0302] The processor 501 is configured to execute computer-executable instructions stored in the memory 502 to implement the control method of the dual-cold-source air-conditioning system.

[0303] The processor 501 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0304] Optionally, the memory 502 may be independent or integrated with the processor 501. When the memory 502 is a device independent of the processor 501, the electronic device 500 may further include:

[0305] Bus 503 is used to connect processor 501 and memory 502. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. Buses can be divided into address buses, data buses, control buses, etc., but this does not mean that there is only one bus or only one type of bus.

[0306] Optionally, in a specific implementation, if the memory 502 and the processor 501 are integrated on a chip, the memory 502 and the processor 501 can communicate through an internal interface.

[0307] The present application also provides a computer-readable storage medium, which may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes. Specifically, the computer-readable storage medium stores computer execution instructions, and the computer execution instructions are used for the methods in the above embodiments.

[0308] The present application also provides a computer program product, including computer execution instructions, which implement the method in the above embodiment when executed by a processor.

[0309] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered merely as exemplary, and the true scope and spirit of the present application are indicated by the claims.

[0310] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A control method for a dual-cold-source air-conditioning system, characterized in that: The dual-cold-source air-conditioning system includes: a first cold-source system and a second cold-source system; the first cold-source system includes a heat exchange unit, a refrigerant water inlet pipe, a refrigerant water outlet pipe, and a first refrigeration coil of an evaporator to form a refrigeration system; the second cold-source system includes a second refrigeration coil of the evaporator, a compressor, a condenser, and a first one-way valve to form a refrigeration system; the method includes: controlling the first cold source system and / or the second cold source system to cool according to a target operating mode according to a control demand instruction, wherein the target operating mode includes any one of a preferred operating mode, an emergency operating mode, or an energy-saving operating mode, and a combination of individual modes; In which, the first end and the second end of the heat exchange unit are respectively connected to the refrigerant inlet pipe and the refrigerant outlet pipe, and the third end and the fourth end of the heat exchange unit are respectively connected to the first refrigeration coil of the evaporator; one end of the compressor is connected to the second refrigeration coil of the evaporator, and the other end of the compressor is connected to one end of the condenser, and the other end of the condenser is connected to one end of the first one-way valve, and the other end of the first one-way valve is connected to the second refrigeration coil of the evaporator.

2. The control method according to claim 1, characterized in that: The first refrigeration coil of the evaporator includes a first cold source air pipe and a first cold source liquid pipe, and the third end and the fourth end of the heat exchange unit are respectively connected to the first refrigeration coil of the evaporator, including: The third end of the heat exchange unit is connected to the first cold source air pipe, and the first cold source air pipe is a refrigerant outlet; The fourth end of the heat exchange unit is connected to the first cold source liquid pipe, and the first cold source liquid pipe is the refrigerant inlet.

3. The control method according to claim 2, characterized in that: The first cold source system further includes a first distribution pipeline and a second distribution pipeline, and the third end of the heat exchange unit is connected to the first cold source gas pipe, including: the third end of the heat exchange unit is connected to the first cold source gas pipe through the first distribution pipeline; The fourth end of the heat exchange unit is connected to the first cold source liquid pipe, which includes: the fourth end of the heat exchange unit is connected to the first cold source liquid pipe through the second distribution pipeline.

4. The control method according to claim 3, characterized in that: The preferred operating mode includes a cooling mode of the first cooling source system, and the cooling mode of the first cooling source system includes any one of a chilled water cooling mode, a gravity heat pipe cooling mode, or a power heat pipe cooling mode.

5. The control method according to claim 1, characterized in that: The second refrigeration coil of the evaporator includes a second cold source air pipe and a second cold source liquid pipe, and the second cold source air pipe and the second cold source liquid pipe are located on the same side of the second refrigeration coil; One end of the compressor is connected to the second refrigeration coil of the evaporator, comprising: one end of the compressor is connected to the second cold source air pipe; The other end of the first one-way valve is connected to the second refrigeration coil of the evaporator, including: the other end of the first one-way valve is connected to the second cold source liquid pipe.

6. The control method according to claim 5, characterized in that: The second cold source system further includes a third distribution pipeline and a fourth distribution pipeline, and one end of the compressor is connected to the second cold source air pipe, including: one end of the compressor is connected to the second cold source air pipe through the third distribution pipeline; The other end of the first one-way valve is connected to the second cold source liquid pipe, which includes: the other end of the first one-way valve is connected to the second cold source liquid pipe through the fourth distribution pipeline.

7. The control method according to claim 6, characterized in that: The second cold source system also includes: a fluorine pump, which constitutes a fluorine pump natural cooling mode in the refrigeration mode of the second cold source system, and the energy-saving operation mode includes the fluorine pump natural cooling mode; wherein, one end of the fluorine pump is connected to one end of the first one-way valve, and the other end of the fluorine pump is connected to the other end of the first one-way valve.

8. The control method according to any one of claims 1 to 7, characterized in that: If the control demand instruction is a first control instruction, controlling the first cold source system and / or the second cold source system of the dual-cold source air-conditioning system to cool according to the target operation mode according to the control demand instruction includes: In response to a start instruction of the dual-cold-source air-conditioning system, determining whether the first cold-source system has an abnormality; If not, controlling the first cooling source system to cool in the preferred operating mode according to the first control instruction; If yes, controlling the second cold source system to cool in the emergency operation mode or the energy-saving operation mode according to the first control instruction; The first control instruction is used to indicate that the control requirement of the dual-cold-source air-conditioning system is a safety priority.

9. The control method according to claim 8, characterized in that: After controlling the first cold source system to cool in the preferred operation mode, the method further includes: If an abnormality occurs in the first cold source system, a first switching instruction is generated, and in response to the first switching instruction, the first cold source system is switched to the second cold source system to control the second cold source system to cool in the emergency operation mode or the energy-saving operation mode.

10. The control method according to claim 9, characterized in that: After switching the first cooling source system to the second cooling source system in response to the first switching instruction, the method further includes: If the first cooling source system returns to normal, a second switching instruction is generated, and in response to the second switching instruction, the second cooling source system is switched to the first cooling source system to control the first cooling source system to cool in the preferred operation mode.

11. The control method according to claim 9, characterized in that: The controlling the second cold source system to cool in the emergency operation mode or the energy-saving operation mode includes: determining whether the startup state of the second cold source system satisfies the startup condition of the energy-saving operation mode; If yes, controlling the second cold source system to cool in the energy-saving operation mode; If not, the second cold source system is controlled to cool in the emergency operation mode.

12. The control method according to any one of claims 1 to 7, characterized in that: If the control demand instruction is a second control instruction, controlling the first cold source system and / or the second cold source system of the dual-cold source air-conditioning system to cool according to the target operation mode according to the control demand instruction includes: In response to the start-up instruction of the dual-cold-source air-conditioning system, determining whether the start-up state of the second cold-source system meets the start-up condition of the energy-saving operation mode; If yes, controlling the second cooling source system to cool in the energy-saving operation mode according to the second control instruction; If not, controlling the first cooling source system to cool in the preferred operating mode according to the second control instruction; The second control instruction is used to indicate that the control requirement of the dual-cold-source air-conditioning system is energy-saving priority.

13. The control method according to claim 12, characterized in that: After controlling the first cold source system to cool in the preferred operation mode, or after controlling the second cold source system to cool in the energy-saving operation mode, the method further includes: If there is an abnormality in the first cold source system or the energy-saving operation mode, a third switching instruction is generated, and in response to the third switching instruction, the preferred operation mode or the energy-saving operation mode is switched to the emergency operation mode to control the second cold source system to cool in the emergency operation mode.

14. The control method according to claim 12, characterized in that: After controlling the first cold source system to cool in the preferred operation mode, the method further includes: Determining whether the cooling capacity of the first cooling source system meets a first preset cooling capacity; If not, the second cold source system is turned on to cool in the emergency operation mode to control the dual-cold source air-conditioning system to operate in a first dual mode, where the first dual mode includes the primary operation mode and the emergency operation mode.

15. The control method according to claim 12, characterized in that: After controlling the first cold source system to cool in the preferred operation mode, the method further includes: If the startup status of the second cold source system meets the startup conditions of the energy-saving operation mode, the second cold source system is turned on to cool in the energy-saving operation mode to control the dual-cold source air-conditioning system to operate in a second dual mode, and the second dual mode includes the preferred operation mode and the energy-saving operation mode.

16. The control method according to claim 14, characterized in that: After controlling the dual-cold-source air-conditioning system to operate in the first dual mode, the method further includes: If the first cold source system has an abnormality, a fourth switching instruction is generated, and in response to the fourth switching instruction, the first dual mode is switched to the emergency operation mode or the energy-saving operation mode according to the startup state of the second cold source system, and the second cold source system is controlled to cool in the emergency operation mode or the energy-saving operation mode; If the second cold source system has an abnormality, a fifth switching instruction is generated, and in response to the fifth switching instruction, the first dual mode is switched to the primary operation mode, and the first cold source system is controlled to cool in the primary operation mode.

17. The control method according to claim 16, characterized in that: The step of switching the first dual mode to the emergency operation mode or the energy-saving operation mode according to the startup state of the second cold source system in response to the fourth switching instruction includes: determining whether the startup state of the second cold source system satisfies the startup condition of the energy-saving operation mode; If yes, switching the first dual mode to the energy-saving operation mode in response to the fourth switching instruction to control the second cold source system to cool in the energy-saving operation mode; If not, the first dual mode is switched to the emergency operation mode in response to the fourth switching instruction, so as to control the second cold source system to cool in the emergency operation mode.

18. The control method according to claim 15, characterized in that: After controlling the dual-cold-source air-conditioning system to operate in the second dual mode, the method further includes: If an abnormality occurs in the first cold source system, a sixth switching instruction is generated, and in response to the sixth switching instruction, the second dual mode is switched to the emergency operation mode or the energy-saving operation mode according to the startup state of the second cold source system, and the second cold source system is controlled to cool in the emergency operation mode or the energy-saving operation mode; If the second cold source system has an abnormality, a seventh switching instruction is generated, and in response to the seventh switching instruction, the second dual mode is switched to the primary operating mode, and the first cold source system is controlled to cool in the primary operating mode.

19. The control method according to claim 18, characterized in that: The step of switching the second dual mode to the emergency operation mode or the energy-saving operation mode according to the startup state of the second cold source system in response to the sixth switching instruction includes: determining whether the startup state of the second cold source system satisfies the startup condition of the energy-saving operation mode; If yes, switching the second dual mode to the energy-saving operation mode in response to the sixth switching instruction to control the second cold source system to cool in the energy-saving operation mode; If not, the second dual mode is switched to the emergency operation mode in response to the sixth switching instruction, so as to control the second cold source system to cool in the emergency operation mode.

20. The control method according to claim 17, characterized in that: After controlling the second cold source system to operate in the emergency operation mode, the method further includes: Determining whether the cooling capacity of the second cooling source system meets a second preset cooling capacity; If not, the first cold source system is turned on to cool in the preferred operating mode, so as to control the dual-cold source air-conditioning system to operate in the first dual mode.

21. The control method according to claim 15, characterized in that: After the second cold source system is in the energy-saving operation mode, the method further includes: determining whether the cooling capacity of the second cooling source system meets a third preset cooling capacity; If not, the first cold source system is turned on to cool in the preferred operation mode, so that the dual-cold source air-conditioning system operates in the second dual mode.

22. The dual-cold-source air-conditioning control method according to claim 13, characterized in that: After controlling the second cold source system to cool in the emergency operation mode, the method further includes: determining whether the startup state of the second cold source system satisfies the startup condition of the energy-saving operation mode; If so, an eighth switching instruction is generated, and in response to the eighth switching instruction, the emergency operation mode is switched to the energy-saving operation mode to control the second cold source system to cool in the energy-saving operation mode.

23. The control method according to claim 22, characterized in that: After controlling the second cold source system to cool in the energy-saving operation mode, the method further includes: determining whether the cooling capacity of the second cooling source system meets a fourth preset cooling capacity; If not, and there is an abnormality in the first cold source system, a ninth switching instruction is generated, and in response to the ninth switching instruction, the energy-saving operation mode is switched to the emergency operation mode to control the second cold source system to cool in the emergency operation mode.

24. A control device for a dual-cold-source air-conditioning system, characterized in that: The dual-cold-source air-conditioning system includes: a first cold-source system and a second cold-source system; the first cold-source system includes a heat exchange unit, a refrigerant water inlet pipe, a refrigerant water outlet pipe, and a first refrigeration coil of an evaporator to form a refrigeration system; the second cold-source system includes a second refrigeration coil of the evaporator, a compressor, a condenser, and a first one-way valve to form a refrigeration system; the control device includes: a control module, configured to control the first cold source system and / or the second cold source system of the dual cold source air conditioning system to cool according to a target operating mode according to a control demand instruction, wherein the target operating mode includes any one of a preferred operating mode, an emergency operating mode, or an energy-saving operating mode, and a combination of individual modes; In which, the first end and the second end of the heat exchange unit are respectively connected to the refrigerant inlet pipe and the refrigerant outlet pipe, and the third end and the fourth end of the heat exchange unit are respectively connected to the first refrigeration coil of the evaporator; one end of the compressor is connected to the second refrigeration coil of the evaporator, and the other end of the compressor is connected to one end of the condenser, and the other end of the condenser is connected to one end of the first one-way valve, and the other end of the first one-way valve is connected to the second refrigeration coil of the evaporator.

25. An electronic device, characterized in that: include: a processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the control method of the dual-cold-source air-conditioning system according to any one of claims 1 to 23.

26. A computer program product, comprising computer-executable instructions, wherein when the computer-executable instructions are executed by a processor, the computer-executable instructions are used to implement the control method of the dual-cold-source air-conditioning system according to any one of claims 1 to 23.

Images