A modular assembled high-efficiency air conditioning system and control method

Abstract

The present application provides a modular assembled high-efficiency air-conditioning system and a control method, which relate to the field of air-conditioning cooling technology. The modular assembled high-efficiency air-conditioning system includes a water inlet pipe, a water outlet pipe and a plurality of chilled water main unit components; the plurality of chilled water main unit components are connected in parallel, the water inlet of the chilled water main unit component is connected to the water inlet pipe, and the water outlet of the chilled water main unit component is connected to the water outlet pipe; the chilled water main unit component includes a chilled water main unit, a chilled water pump and a valve component, the chilled water pump is respectively connected to the water inlet and the water inlet pipe of the chilled water main unit, the valve component includes a plurality of control valves, the plurality of control valves are respectively arranged between the chilled water main unit and the chilled water pump and / or between the chilled water pump and the water inlet pipe and / or between the chilled water main unit and the water outlet pipe, wherein the chilled water main unit is an integrated evaporative cooling chilled water main unit. The air-conditioning system can achieve the technical effect of improving the operating energy efficiency.

Description

Technical Field

[0001] The present application relates to the field of air conditioning and cooling technology, and in particular to a modular assembled high-efficiency air conditioning system and a control method. Background Art

[0002] Common central air-conditioning cooling water systems are generally composed of water-cooled chillers, cooling towers, cooling water pumps, valves, and pipes. They are arranged in a decentralized manner, with the chillers and cooling water pumps placed in indoor equipment rooms and cooling towers placed in outdoor environments. In traditional central air-conditioning cooling water systems, cooling water pumps are generally connected in a pump group manner, with the pumps acting as backup for each other. However, the cooling water system using a pump group connection method has the following problems: First, the pump has a large operating back pressure, and the actual operating water flow of the pump is less than the rated water flow. Therefore, a large margin is often left when selecting and designing the pump, resulting in a low cooling water system delivery coefficient and high cooling water pump operating energy consumption. Second, variable flow control of the cooling water system is difficult. In the form of pump group connection, the hydraulic distribution between the chillers is difficult to achieve hydraulic balance adjustment due to differences in the length of each pipe path, valve resistance, etc. in the decentralized arrangement. The variable frequency control of the running pump in the pump group form uses the same frequency operation, which cannot be well matched to the chiller to operate at the optimal load point from the perspective of variable flow. And because the water supply guarantee problem at the farthest end (the most unfavorable end) of the water system must be considered, the operating frequency of the water pump in the pump system is relatively high, and the temperature difference between the cooling water supply and return water is small, which ultimately leads to the system operation being not energy-efficient.

[0003] The common central air conditioning chilled water system is generally composed of a water-cooled chiller, a chilled water pump, valves, and pipes; in general, the chilled water pump and the chiller are placed in the same indoor equipment room. In traditional central air conditioning chilled water systems, the chilled water pumps are generally connected in a pump group, and the pumps are backup for each other. However, the chilled water system using the pump group connection method also has the problem of high back pressure of the pump operation and difficulty in variable flow control of the chilled water system.

[0004] Generally, the traditional central air-conditioning cooling water system and chilled water system adopt the pump group connection form. This form will lead to a large margin in the design and selection of cooling (freezing) water pumps, and high operating energy consumption; the hydraulic balance problem caused by factors such as the decentralized layout under the pump group connection form leads to a high pump operation frequency, and it is impossible to match the optimal operating condition point of the chiller from the perspective of variable flow control, which ultimately leads to low operating energy efficiency of the air-conditioning system. Summary of the invention

[0005] The purpose of this application is to provide a modular assembled high-efficiency air-conditioning system and a control method, which can achieve the technical effect of improving operating energy efficiency.

[0006] In a first aspect, the present application provides a modular assembled high-efficiency air conditioning system, including a water inlet pipe, a water outlet pipe, and a plurality of chiller main unit components;

[0007] The multiple water chiller mainframe components are connected in parallel with each other, the water inlet of the water chiller mainframe component is connected to the water inlet pipe, and the water outlet of the water chiller mainframe component is connected to the water outlet pipe;

[0008] The water chiller assembly includes a water chiller, a chilled water pump and a valve assembly, wherein the chilled water pump is respectively connected to the water inlet of the water chiller and the water inlet pipe, and the valve assembly includes a plurality of control valves, which are respectively arranged between the water chiller and the chilled water pump and / or between the chilled water pump and the water inlet pipe and / or between the water chiller and the water outlet pipe, wherein the water chiller is an integrated evaporative cooling water chiller.

[0009] In the above implementation process, the modular assembled high-efficiency air-conditioning system is configured with multiple parallel-connected chilled water main unit components, each of which integrates a set of chilled water main unit, refrigerated water pump and valve components. The chilled water main unit and the refrigerated water pump are configured one-to-one, so that the refrigerated water pump and the chilled water main unit form a linkage control module, and the cooling water system and each chilled water main unit component are integrated in the design, replacing the traditional decentralized water-cooled chilled water main unit, cooling water tower, cooling water pump and cooling water system pipeline network; therefore, in the cooling water system, through the integrated design of the chilled water main unit components, the cooling water pump and the chilled water main unit are configured one-to-one, and there is no problem of high back pressure when the pump group is connected and operated. The cooling water pump selection has higher adaptability, and the operating conditions of the cooling water pump with small flow and low head can obtain a higher cooling water system delivery coefficient, which can achieve the technical effect of improving operating energy efficiency.

[0010] Furthermore, the modular assembled high-efficiency air-conditioning system also includes a water inlet temperature sensor and a water inlet pressure sensor, and the water inlet temperature sensor and the water inlet pressure sensor are arranged in the water inlet pipe.

[0011] In the above implementation process, by setting up the inlet temperature sensor and the inlet pressure sensor, the inlet temperature data and the inlet pressure data of the module-assembled high-efficiency air-conditioning system are monitored, so that the chilled water host and the refrigerated water pump are accurately linked and controlled according to the inlet temperature data and the inlet pressure data, thereby further improving the operating energy efficiency.

[0012] Furthermore, the modular assembled high-efficiency air-conditioning system also includes a water outlet temperature sensor and a water outlet pressure sensor, and the water outlet temperature sensor and the water outlet pressure sensor are arranged in the water outlet pipe.

[0013] In the above implementation process, by setting up the outlet water temperature sensor and the outlet water pressure sensor, the outlet water temperature data and the outlet water pressure data of the module-assembled high-efficiency air-conditioning system are monitored, so that the chilled water host and the refrigerated water pump are accurately linked and controlled according to the outlet water temperature data and the outlet water pressure data, thereby further improving the operating energy efficiency.

[0014] Furthermore, a cooling water system is integrated in the integrated evaporative cooling chiller, and a cooling water pump is configured one-to-one with the chiller.

[0015] In the above implementation process, different from the traditional water-cooled central air-conditioning water system, the integrated evaporative cooling chiller provided by the present application has an integrated cooling water system. The cooling water system has been integrated into the chiller, and the overall structure is simpler and more efficient, replacing the decentralized water-cooled chiller, cooling water tower, cooling water pump and cooling water system pipeline network; the cooling water system and the chiller are integrated in design, and the cooling water pump and the chiller are configured one-to-one.

[0016] Furthermore, the water chiller component also includes a water flow meter, multiple pressure gauges and multiple thermometers. The water flow meter is arranged at the water inlet or outlet of the water chiller, and the multiple pressure gauges and the multiple thermometers are respectively arranged at the water inlet and / or outlet of the water chiller.

[0017] In the above implementation process, the water flow meter is used to monitor the water inlet flow or outlet flow of the chiller, and then the operating parameters of the chiller and the freezing water pump are adjusted according to the water inlet flow or outlet flow of the chiller to improve the operating energy efficiency; multiple pressure gauges and multiple thermometers are set in the connecting pipeline of the chiller to monitor the pressure and temperature of the cooling water in the connecting pipeline to ensure the normal operation of the modular assembled high-efficiency air-conditioning system.

[0018] Furthermore, the water chiller assembly also includes a check valve, which is connected between the freezing water pump and the water inlet of the water chiller.

[0019] In the above implementation process, the backflow of the chilled water can be prevented by setting a check valve.

[0020] Furthermore, the water chiller assembly also includes an intermediate butterfly valve, one end of which is connected between the water inlet of the water chiller and the check valve, and the other end of which is connected to the water outlet of the water chiller.

[0021] In the above implementation process, a cooling water passage is formed between the water inlet and the water outlet of the chiller by setting an intermediate butterfly valve; thus, the intermediate butterfly valve is closed when the modular assembled high-efficiency air-conditioning system operates normally, and the intermediate butterfly valve is opened when the modular assembled high-efficiency air-conditioning system is cleaned.

[0022] Furthermore, the modular assembled high-efficiency air-conditioning system also includes a centralized control mechanism, and the centralized control mechanism is respectively connected to the multiple cold water host components.

[0023] In the above implementation process, multiple chiller main unit components are controlled in linkage through a centralized control mechanism, so that the control of the modular assembled high-efficiency air-conditioning system and the control of the chiller main unit are efficiently integrated.

[0024] Furthermore, the water chiller component also includes a side-flow water treatment device, and the side-flow water treatment device is matched with the water chiller.

[0025] In the above implementation process, the cooling water flowing through the chiller is treated by setting a bypass water treatment device to achieve descaling, anti-scaling, anti-rust, sterilization and other effects, thereby protecting the normal operation of the chiller.

[0026] Furthermore, the chillers in the multiple chiller assemblies are controlled by a master-slave linkage control method, the chilled water pump and the corresponding chiller are controlled by a one-to-one frequency-dependent linkage sub-module, and the modular assembled air-conditioning system is group-controlled by taking the total water supply temperature and / or the total return water temperature as the target.

[0027] In a second aspect, the present application provides a control method for a modular assembled high-efficiency air-conditioning system, the control method being applied to the modular assembled high-efficiency air-conditioning system according to any one of the first aspects, the control method comprising:

[0028] The plurality of chillers are controlled by a master-slave linkage control method;

[0029] The chilled water pump and the corresponding chilled water host are controlled by a one-to-one frequency-dependent linkage sub-module.

[0030] Other features and advantages disclosed in the present application will be described in the following description, or some features and advantages can be inferred or determined without doubt from the description, or can be learned by implementing the above-mentioned technology disclosed in the present application.

[0031] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of the structure of a modular assembled high-efficiency air conditioning system provided in an embodiment of the present application;

[0034] Figure 2 A schematic diagram of the structure of a chiller main unit assembly provided in an embodiment of the present application.

[0035] Figure numerals: water inlet pipe 100; water inlet temperature sensor 110; water inlet pressure sensor 120; water outlet pipe 200; water outlet temperature sensor 210; water outlet pressure sensor 220; water chiller assembly 300; water chiller 310; chilled water pump 320; control valve 330; water flow meter 340; pressure gauge 350; thermometer 360; check valve 370; intermediate butterfly valve 380; centralized control mechanism 400; bypass water treatment device 500. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0037] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0038] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0039] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or a point connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0041] The embodiment of the present application provides a modular assembled high-efficiency air-conditioning system and a control method, which can be applied to a central air-conditioning system; the modular assembled high-efficiency air-conditioning system is configured with a plurality of mutually parallel chilled water main unit components, each chilled water main unit component integrates a set of chilled water main unit, refrigerated water pump and valve components, and the chilled water main unit and the refrigerated water pump are configured one-to-one, so that the refrigerated water pump and the chilled water main unit form a linkage control module, and the cooling water system and each chilled water main unit component are integrated in the design, replacing the traditional decentralized water-cooled chilled water main unit, cooling water tower, cooling water pump and cooling water system pipeline network; thus, in the cooling water system, through the integrated design of the chilled water main unit components, the cooling water pump and the chilled water main unit are configured one-to-one, and there is no problem of high back pressure when the pump group is connected and operated, the cooling water pump selection has higher adaptability, and the operating condition of the cooling water pump with small flow and low head can obtain a higher cooling water system delivery coefficient, which can achieve the technical effect of improving the operating energy efficiency.

[0042] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of a modular assembled high-efficiency air conditioning system provided in an embodiment of the present application. Figure 2 A schematic diagram of the structure of a chiller main unit assembly provided in an embodiment of the present application; the modular assembled high-efficiency air conditioning system includes a water inlet pipe 100, a water outlet pipe 200 and a plurality of chiller main unit assemblies 300;

[0043] Exemplarily, a plurality of chiller mainframe assemblies 300 are connected in parallel, the water inlet of the chiller mainframe assembly 300 is connected to the water inlet pipe 100, and the water outlet of the chiller mainframe assembly is connected to the water outlet pipe 200;

[0044] In some embodiments, the chiller 310 may be an integrated evaporative cooling chiller. Compared with water cooling, the evaporative condensation heat exchange has a more superior heat exchange performance.

[0045] Exemplarily, the chiller assembly 300 includes a chiller 310, a chilled water pump 320 and a valve assembly, wherein the chilled water pump 320 is respectively connected to the water inlet and the water inlet pipe 100 of the chiller 310, and the valve assembly includes a plurality of control valves 330, wherein the plurality of control valves 330 are respectively arranged between the chiller 310 and the chilled water pump 320 and / or between the chilled water pump 320 and the water inlet pipe 100 and / or between the chiller 310 and the water outlet pipe 200, and the chiller 310 is an integrated evaporative cooling chiller;

[0046] The control valve 330 is used to control and adjust the flow in the pipeline, for example, it can play a role of cutting off and throttling.

[0047] Exemplarily, the control valve 330 may be a butterfly valve, a check valve, or other types, which are merely examples and not limitations. The control valve 330 may be of a suitable type as needed.

[0048] In some embodiments, the modular assembled high-efficiency air-conditioning system is configured with multiple parallel-connected chilled water main unit components 300, each chilled water main unit component 300 integrates a chilled water main unit 310, a chilled water pump 320 and a valve component, and the chilled water main unit 310 and the chilled water pump 320 are configured one-to-one, so that the chilled water pump 320 and the chilled water main unit 310 form a linkage control module, and the cooling water system and each chilled water main unit component 300 are integrated in the design, replacing the traditional decentralized water-cooled chilled water main unit, cooling water tower, cooling water pump and cooling water system pipeline network; thus, in the cooling water system, through the integrated design of the chilled water main unit component 300, the cooling water pump and the chilled water main unit 310 are configured one-to-one, and there is no problem of high back pressure when the pump group is connected and operated, the selection and adaptability of the cooling water pump is higher, and the operating condition of the cooling water pump with small flow and low head can obtain a higher cooling water system delivery coefficient, which can achieve the technical effect of improving operating energy efficiency.

[0049] Exemplarily, the modular assembled high-efficiency air-conditioning system further includes a water inlet temperature sensor 110 and a water inlet pressure sensor 120, and the water inlet temperature sensor 110 and the water inlet pressure sensor 120 are arranged in the water inlet pipe.

[0050] Exemplarily, by setting up an inlet water temperature sensor 110 and an inlet water pressure sensor 120, the inlet water temperature data and the inlet water pressure data of the module-assembled high-efficiency air-conditioning system are monitored, so that the chilled water host 310 and the chilled water pump 320 are accurately linked and controlled according to the inlet water temperature data and the inlet water pressure data, thereby further improving the operating energy efficiency.

[0051] Exemplarily, the modular assembled high-efficiency air conditioning system further includes an outlet water temperature sensor 210 and an outlet water pressure sensor 220, and the outlet water temperature sensor 210 and the outlet water pressure sensor 220 are arranged in the outlet water pipe.

[0052] Exemplarily, by setting up an outlet water temperature sensor 210 and an outlet water pressure sensor 220, the outlet water temperature data and outlet water pressure data of the module-assembled high-efficiency air-conditioning system are monitored, so that the chilled water host 310 and the chilled water pump 320 are accurately linked and controlled according to the outlet water temperature data and the outlet water pressure data, thereby further improving the operating energy efficiency.

[0053] Exemplarily, the chiller 310 is an evaporative cooling chiller, and a cooling water system is integrated in the chiller 310; the cooling water system is integrated in the integrated evaporative cooling chiller, and the cooling water pump is configured one-to-one with the chiller 310.

[0054] In the above implementation process, different from the traditional water-cooled central air-conditioning water system, the integrated evaporative cooling chiller provided by the present application has an integrated cooling water system. The cooling water system has been integrated into the chiller, and the overall structure is simpler and more efficient, replacing the decentralized water-cooled chiller, cooling water tower, cooling water pump and cooling water system pipeline network; the cooling water system and the chiller are integrated in design, and the cooling water pump and the chiller are configured one-to-one.

[0055] Exemplarily, the chiller assembly further includes a water flow meter 340 , which is disposed at a water inlet or outlet of the chiller 310 .

[0056] Exemplarily, the water flow meter 340 monitors the water inlet flow or the water outlet flow of the chiller 310, and then adjusts the operating parameters of the chiller 310 and the freezing water pump 320 according to the water inlet flow or the water outlet flow of the chiller 310 to improve the operating energy efficiency.

[0057] Exemplarily, the chiller assembly further includes a plurality of pressure gauges 350 and a plurality of thermometers 360 , and the plurality of pressure gauges 350 and the plurality of thermometers 360 are respectively disposed at the water inlet and / or the water outlet of the chiller 310 .

[0058] Exemplarily, a plurality of pressure gauges 350 and a plurality of thermometers 360 are disposed in the connecting pipeline of the chiller 310 to monitor the pressure and temperature of the cooling water in the connecting pipeline to ensure the normal operation of the modular assembled high-efficiency air conditioning system.

[0059] Exemplarily, the chiller assembly further includes a check valve 370 , which is connected between the chilled water pump 320 and a water inlet of the chiller 310 .

[0060] For example, by providing the check valve 370 , the backflow of cooling water can be prevented.

[0061] Exemplarily, the check valve 370 refers to a valve whose opening and closing part is a circular valve disc and which relies on its own weight and medium pressure to produce movement to block the backflow of the medium. It belongs to the automatic valve category and is also called a check valve, a one-way valve, a reflux valve or an isolation valve; the valve disc movement modes are divided into lifting type and swing type.

[0062] Exemplarily, the chiller assembly further includes an intermediate butterfly valve 380 , one end of which is connected between the water inlet of the chiller 310 and the check valve 370 , and the other end of which is connected to the water outlet of the chiller 310 .

[0063] Exemplarily, a cooling water passage is formed between the water inlet and the water outlet of the chiller 310 by setting an intermediate butterfly valve 380; thus, the intermediate butterfly valve 380 is closed when the modular assembled high-efficiency air-conditioning system operates normally, and the intermediate butterfly valve 380 is opened when the modular assembled high-efficiency air-conditioning system is cleaned.

[0064] Exemplarily, the modular assembled high-efficiency air-conditioning system further includes a centralized control mechanism 400 , and the centralized control mechanism 400 is respectively connected to the plurality of chiller main unit assemblies 300 .

[0065] Exemplarily, the centralized control mechanism 400 controls the plurality of chiller main unit assemblies 300 in a linked manner, so that the control of the modular assembled high-efficiency air-conditioning system and the control of the chiller main unit 310 are efficiently integrated.

[0066] Exemplarily, the chiller main unit assembly further includes a side stream water treatment device 500 , and the side stream water treatment device 500 is matched with the chiller main unit 310 .

[0067] Exemplarily, by providing a bypass water treatment device 500 to treat the cooling water flowing through the chiller 310 , descaling, anti-scaling, anti-rusting, sterilization and other effects are achieved to protect the normal operation of the chiller 310 .

[0068] Exemplarily, the side-stream water treatment device uses metal electrodes made of special materials to produce micro-electrolysis in the water flowing through it under the action of an appropriate external voltage, so that the chloride ions, oxygen molecules and water molecules dissolved in the water produce the following oxidizing substances: chlorine dioxide (CLO2), active oxygen (O), hydrogen peroxide (H202), molecular chlorine (CL2), hypochlorous acid (HClO), etc.; these oxidizing substances diffuse to all places where water passes through through the flow of water, killing bacteria and algae cells in the water system; bacteria and algae cells in the water flowing through the water treatment device are directly killed due to the action of electric current, and active oxygen forms an oxide film on the pipe to protect the equipment from further corrosion, and various microbial corrosion and deposition corrosion are inhibited.

[0069] In some embodiments, the chillers 310 in the multiple chiller assemblies 300 are controlled by a master-slave linkage control method, the chilled water pump 320 and the corresponding chiller 310 are controlled by a one-to-one frequency-dependent linkage sub-module, and the modular assembled air-conditioning equipment is group-controlled by taking the total water supply temperature and / or the total return water temperature as the target.

[0070] In some embodiments, the present application provides a control method for a modular assembled high-efficiency air conditioning system, the control method is applied to Figure 1 , Figure 2 The control method of the modular assembled high-efficiency air conditioning system shown includes:

[0071] Multiple chillers are controlled by master-slave linkage control;

[0072] The chilled water pump and the corresponding chiller are controlled by a one-to-one frequency-controlled linkage module.

[0073] For example, the modular assembled high-efficiency air conditioning system provided in the embodiment of the present application is composed of an integrated evaporative cooling chiller 310, a chilled water pump 320, and corresponding valve components and pipelines. Compared with the traditional central air conditioning system, the main differences are:

[0074] 1) Use integrated evaporative cooling chillers to replace decentralized water-cooled chillers, cooling towers, cooling water pumps and cooling water system pipe networks; integrated design of cooling water system and chillers;

[0075] 2) The chilled water pump 320 and the chilled water host 310 also adopt a one-to-one configuration, and the chilled water pump 320 and the chilled water host 310 form a linkage control module;

[0076] 3) In terms of control, the control of the cooling water system and the control of the chiller 310 are efficiently integrated; the modular assembled chillers 310 are controlled by a master-slave linkage control method; the chilled water pump 320 and the assembled chiller 310 are controlled by a one-to-one frequency-dependent linkage module; the control of the air conditioning cold source system is achieved through the onboard group control cabinet or the nearby installed group control cabinet with the system total supply / return water temperature as the target to achieve group control of the system;

[0077] In some embodiments, the modular assembled high-efficiency air-conditioning system provided in the embodiments of the present application can be configured with a cold source system operation data monitoring, remote intelligent control and energy metering management Internet of Things platform system; the modular assembled high-efficiency air-conditioning system has at least the following beneficial effects:

[0078] 1) The cooling water system and the chiller are designed in an integrated manner. The cooling water pump and the chiller are configured one-to-one. There is no problem of high back pressure when the pump group is connected. The cooling water pump selection has higher adaptability, and the operation conditions of the cooling water pump with small flow and low head can obtain a higher cooling water system delivery coefficient. The evaporative condensation heat exchange form also has better heat exchange performance than the water cooling form;

[0079] 2) The chilled water pump and the chilled water main unit are also configured in a one-to-one manner; on the one hand, it can effectively avoid the problem of excessive pump selection margin caused by the back pressure of the pump group; secondly, this configuration can make the variable frequency control of the chilled water pump simpler, without considering the hydraulic imbalance caused by the difference in pipe resistance; while optimizing the energy efficiency of the chilled water pump, it can achieve the optimal operating point of the chilled water main unit through simple variable frequency and variable flow control, further optimize the operating energy efficiency of the chilled water main unit, and thus improve the overall operating energy efficiency of the air conditioning system;

[0080] 3) Integration, digitization and intelligence; simple, accurate and easy to implement control; system operation data, equipment operation / shutdown / fault status, etc. are visualized in multiple interfaces, which are clear at a glance and convenient for after-sales operation and maintenance and energy-saving regulation; it can meet the operation matching requirements of 15% to 100% of the terminal load, and the cold source load output is accurate and efficient, stable and energy-saving; it can integrate other controlled loads of the system for unified operation and maintenance management.

[0081] In all the embodiments of the present application, "big" and "small" are relative, "more" and "less" are relative, and "up" and "down" are relative. The expressions of such relative terms are not elaborated in the embodiments of the present application.

[0082] It should be understood that the "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required for the present application.

[0083] In the various embodiments of the present application, it should be understood that the size of the serial numbers of the above-mentioned processes does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0084] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A modular assembled high-efficiency air conditioning system, characterized in that: It includes a water inlet pipe, a water outlet pipe and a plurality of chiller components; The multiple water chiller mainframe components are connected in parallel with each other, the water inlet of the water chiller mainframe component is connected to the water inlet pipe, and the water outlet of the water chiller mainframe component is connected to the water outlet pipe; The water chiller assembly includes a water chiller, a chilled water pump and a valve assembly, wherein the chilled water pump is respectively connected to the water inlet of the water chiller and the water inlet pipe, and the valve assembly includes a plurality of control valves, which are respectively arranged between the water chiller and the chilled water pump and / or between the chilled water pump and the water inlet pipe and / or between the water chiller and the water outlet pipe, wherein the water chiller is an integrated evaporative cooling water chiller.

2. The modular assembled high-efficiency air conditioning system according to claim 1, characterized in that: The modular assembled high-efficiency air conditioning system also includes a water inlet temperature sensor and a water inlet pressure sensor, and the water inlet temperature sensor and the water inlet pressure sensor are arranged in the water inlet pipe.

3. The modular assembled high-efficiency air conditioning system according to claim 1 or 2, characterized in that: The modular assembled high-efficiency air conditioning system also includes a water outlet temperature sensor and a water outlet pressure sensor, and the water outlet temperature sensor and the water outlet pressure sensor are arranged in the water outlet pipe.

4. The modular assembled high-efficiency air conditioning system according to claim 1, characterized in that: The integrated evaporative cooling chiller has an integrated cooling water system, and a cooling water pump is configured one-to-one with the chiller.

5. The modular assembled high-efficiency air conditioning system according to claim 1 or 4, characterized in that: The water chiller component also includes a water flow meter, multiple pressure gauges and multiple thermometers. The water flow meter is arranged at the water inlet or outlet of the water chiller, and the multiple pressure gauges and the multiple thermometers are respectively arranged at the water inlet and / or outlet of the water chiller.

6. The modular assembled high-efficiency air conditioning system according to claim 1, characterized in that: The water chiller assembly further includes a check valve, which is connected between the freezing water pump and the water inlet of the water chiller.

7. The modular assembled high-efficiency air conditioning system according to claim 6, characterized in that: The water chiller assembly further includes an intermediate butterfly valve, one end of which is connected between the water inlet of the water chiller and the check valve, and the other end of which is connected to the water outlet of the water chiller.

8. The modular assembled high-efficiency air conditioning system according to claim 1, characterized in that: The modular assembled high-efficiency air conditioning system also includes a centralized control mechanism, which is respectively connected to the multiple cold water host components.

9. The modular assembled high-efficiency air conditioning system according to claim 1, characterized in that: The chillers in the multiple chiller assemblies are controlled by a master-slave linkage control method, the chilled water pump and the corresponding chiller are controlled by a one-to-one frequency-dependent linkage sub-module, and the modular assembled air-conditioning system is group-controlled with the total supply water temperature and / or the total return water temperature as the target.

10. A control method for a modular assembled high-efficiency air conditioning system, characterized in that: The control method is applied to the modular assembled high-efficiency air conditioning system according to any one of claims 1 to 9, and the control method comprises: The plurality of chillers are controlled by a master-slave linkage control method; The chilled water pump and the corresponding chilled water host are controlled by a one-to-one frequency-dependent linkage sub-module.

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