Control method and device for multi-split water cooling system, water cooling system and medium

Abstract

The application relates to the technical field of refrigeration equipment, and discloses a control method for a multi-split water cooling system, which comprises the following steps: in the case that the multi-split water cooling system is operated in a combined mode, the current comfort degree ratio and the capacity value of each heat exchange unit are obtained; according to the current comfort degree ratio and a target comfort degree ratio, a target newly added capacity and a target mode are determined; according to the target newly added capacity and the capacity value of each heat exchange unit, a target heat exchange unit is selected, and the target heat exchange unit is controlled to execute the target mode; wherein the combined mode comprises a mode in which an air conditioning mode and a hot water mode are combined to operate, and the target mode comprises the air conditioning mode or the hot water mode. The application can timely adjust the operating modes of the multiple heat exchange units, so that the adjusted heat exchange unit combination can meet the target comfort degree requirement, and the self-adaptability of the multi-split water cooling system regulation and control is improved. The application also discloses a control device for the multi-split water cooling system, a water cooling system and a medium.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment technology, such as a control method and device for a multi-split water-cooled system, a water-cooled system, and a medium. Background Technology

[0002] Currently, in multi-split water-cooled systems, to meet users' larger capacity demands, multiple heat exchange units are connected in parallel to form a multi-split water-cooled system. Simultaneously, all heat exchange units are connected to the outdoor unit system, which comprises multiple outdoor units connected in parallel. For example... Figure 1 As shown, heat exchange units HU_1, HU_2, HU_3, HU_4…HU_N are connected in parallel to form a multi-split water-cooled system. HU_1 is the main heat exchange unit, and the other heat exchange units HU_2, HU_3, HU_4…HU_N are slave heat exchange units. All heat exchange units operate under the same setting mode, sharing the outlet water temperature value of the main heat exchange unit or adjusting the water temperature based on the average of the outlet water temperatures of all heat exchange units. In the above multi-split water-cooled system, all indoor units and all water heaters are connected to the same return water pipe 10, and all indoor units and all water heaters are connected to the same outlet water pipe 20. The outlet water pipe 20 is equipped with a three-way valve 30. By controlling the opening of the three-way valve 30, the corresponding device can be selected as an indoor unit or a water heater from the available options. When the three-way valve 30 is closed, the multi-split water-cooled system provides chilled water or hot water to the selected indoor unit, meeting its cooling or heating needs. When the three-way valve 30 is opened, the multi-split unit heat exchanger supplies hot water to the water heater to meet domestic hot water needs.

[0003] Based on the aforementioned multi-split water-cooled system, related technologies provide a control method for the multi-split water-cooled system, which controls all heat exchange units to synchronously perform the same actions, and the heat exchange units synchronously perform the same actions according to the operating status of the main heat exchange unit. Specifically, when HU_1 is turned on, HU_3, HU_4...HU_N are also turned on synchronously.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] In the practical application of multi-split water-cooled systems, if multiple users have inconsistent needs, the aforementioned multi-split water-cooled system cannot meet the diverse needs of each user. For example, in summer, air conditioners require cooling, while users simultaneously require hot water for bathing. The aforementioned multi-split water-cooled system is only equipped with a three-way valve on the outlet pipe, which cannot simultaneously satisfy both cooling and hot water needs. Consequently, the multi-split water-cooled system cannot adaptively adjust the heat exchange unit according to different user requirements, affecting user comfort.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides a control method, apparatus, water cooling system, and medium for a multi-split water-cooled system, to improve the adaptability of the multi-split water-cooled system's regulation and enhance user comfort.

[0009] In some embodiments, the method includes: when the multi-split water-cooled system is operating in a combined mode, obtaining the current comfort level ratio and the capacity value of each heat exchange unit; determining the target additional capacity and the target mode based on the current comfort level ratio and the target comfort level ratio; selecting the target heat exchange unit based on the target additional capacity and the capacity value of each heat exchange unit, and controlling the target heat exchange unit to execute the target mode; wherein the combined mode includes a mode that combines air conditioning mode and hot water mode, and the target mode includes either air conditioning mode or hot water mode.

[0010] In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to execute, when running the program instructions, the control method for a multi-split water-cooled system as described above.

[0011] In some embodiments, the multi-split water-cooled system includes: N outdoor units, where N is an integer greater than 1; N heat exchange units; M1 indoor units, where M1 is an integer greater than 1; M2 water heaters, where M2 is an integer greater than 1; an air conditioning return water pipe connected to each heat exchange unit and to the M1 indoor units; a water heater return water pipe connected to each heat exchange unit and to the M2 water heaters; an air conditioning outlet water pipe connected to each heat exchange unit and to the M1 indoor units; a water heater outlet water pipe connected to each heat exchange unit and to the M2 water heaters; and N return water three-way valves respectively installed between each heat exchange unit and the air conditioning unit. On the connecting pipe of the return water pipeline, each return water three-way valve has a connection port for connecting to the return water pipeline of the water heater; N outlet three-way valves are respectively set on the connecting pipe of each heat exchange unit and the air conditioner outlet water pipeline, and each outlet three-way valve has a connection port for connecting to the outlet water pipeline of the water heater; and, as described above, the control device for the multi-split water cooling system is electrically connected to the N return water three-way valves and the N outlet three-way valves; wherein, the N return water three-way valves and the N outlet three-way valves can be controlled to open or close to start supplying cold water to M1 indoor units or stop supplying cold water, and / or to start supplying hot water to M2 water heaters or stop supplying hot water.

[0012] In some embodiments, the storage medium stores program instructions that, when executed, perform the control method for a multi-split water-cooled system as described above.

[0013] The control method, apparatus, water cooling system, and medium for multi-unit water-cooled systems provided in this disclosure can achieve the following technical effects:

[0014] When a multi-split water-cooled system operates in combined mode, this embodiment of the present disclosure obtains the current comfort level ratio and the capacity value of each heat exchange unit. Based on the current comfort level ratio and the target comfort level ratio, it determines the target additional capacity and the target mode. This determines the additional capacity value required to update the current comfort level ratio to the target comfort level ratio and the operating mode required to achieve the additional capacity value. This embodiment then selects the target heat exchange unit in the multi-split water-cooled system based on the target additional capacity and the capacity value of each heat exchange unit, and controls the target heat exchange unit to execute the target mode. In this way, this embodiment of the present disclosure can adjust the operating modes of multiple heat exchange units according to the target comfort level ratio, so that the adjusted combination of heat exchange units can meet the target comfort requirements, thereby improving the adaptability of the multi-split water-cooled system control and enhancing user comfort.

[0015] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0017] Figure 1 This is a schematic diagram of the system structure of a multi-unit water-cooled system provided by related technologies;

[0018] Figure 2 This is a schematic diagram of the system structure of a multi-unit water-cooled system provided in an embodiment of this disclosure;

[0019] Figure 3 This is a schematic diagram of a control method for a multi-unit water-cooled system provided in an embodiment of this disclosure;

[0020] Figure 4 This is a schematic diagram of another control method for a multi-unit water-cooled system provided in an embodiment of this disclosure;

[0021] Figure 5 This is a schematic diagram of another control method for a multi-unit water-cooled system provided in an embodiment of this disclosure;

[0022] Figure 6 This is a schematic diagram of another control method for a multi-unit water-cooled system provided in an embodiment of this disclosure;

[0023] Figure 7 This is a schematic diagram of a control device for a multi-unit water-cooled system provided in an embodiment of this disclosure.

[0024] Figure label:

[0025] 100: Air conditioner return water pipe; 101: Air conditioner outlet water pipe;

[0026] 200: Water heater return pipe; 201: Water heater outlet pipe;

[0027] 300: Return water three-way valve;

[0028] 400: Outlet three-way valve;

[0029] 500: Processor; 501: Memory;

[0030] 502: Communication interface; 503: Bus. Detailed Implementation

[0031] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0032] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0033] Unless otherwise stated, the term "multiple" means two or more.

[0034] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0035] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0036] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0037] Currently, in multi-split water-cooled systems, to meet users' larger capacity demands, multiple heat exchange units are connected in parallel to form a multi-split water-cooled system. Simultaneously, all heat exchange units are connected to the outdoor unit system, which comprises multiple outdoor units connected in parallel. For example... Figure 1As shown, heat exchange units HU_1, HU_2, HU_3, HU_4…HU_N are connected in parallel to form a multi-split water-cooled system. HU_1 is the main heat exchange unit, and the other heat exchange units HU_2, HU_3, HU_4…HU_N are slave heat exchange units. All heat exchange units operate under the same setting mode, sharing the outlet water temperature value of the main heat exchange unit or adjusting the water temperature based on the average of the outlet water temperatures of all heat exchange units. In the above multi-split water-cooled system, all indoor units and all water heaters are connected to the same return water pipe 10, and all indoor units and all water heaters are connected to the same outlet water pipe 20. The outlet water pipe 20 is equipped with a three-way valve 30. By controlling the opening of the three-way valve 30, the corresponding device can be selected as an indoor unit or a water heater from the available options. When the three-way valve 30 is closed, the multi-split water-cooled system provides chilled water or hot water to the selected indoor unit, meeting its cooling or heating needs. When the three-way valve 30 is opened, the multi-split unit heat exchanger supplies hot water to the water heater to meet domestic hot water needs.

[0038] Based on the aforementioned multi-split water-cooled system, related technologies provide a control method for the multi-split water-cooled system, which controls all heat exchange units to synchronously perform the same actions, and the heat exchange units synchronously perform the same actions according to the operating status of the main heat exchange unit. Specifically, when HU_1 is turned on, HU_3, HU_4...HU_N are also turned on synchronously.

[0039] In the practical application of multi-split water-cooled systems, if multiple users have inconsistent needs, the aforementioned multi-split water-cooled system cannot meet the diverse needs of each user. For example, in summer, air conditioners require cooling, while users simultaneously require hot water for bathing. The aforementioned multi-split water-cooled system is only equipped with a three-way valve on the outlet pipe, which cannot simultaneously satisfy both cooling and hot water needs. Consequently, the multi-split water-cooled system cannot adaptively adjust the heat exchange unit according to different user requirements, affecting user comfort.

[0040] Combination Figure 2 As shown in the figure, this disclosure provides a multi-split water-cooled system, including N outdoor units, N heat exchange units (HU_1, HU_2, ..., HU_N), M1 indoor units, M2 water heaters, an air conditioner return water pipe 100, a water heater return water pipe 200, an air conditioner outlet water pipe 101, a water heater outlet water pipe 201, N return water three-way valves 300, and N outlet water three-way valves 400.

[0041] The air conditioning return water pipe 100 is connected to each heat exchange unit and to M1 indoor units.

[0042] The water return pipe 200 is connected to each heat exchange unit and to M2 water heaters.

[0043] The air conditioner water outlet pipe 101 is connected to each heat exchange unit and to M1 indoor units.

[0044] The water outlet pipe 201 of the water heater is connected to each heat exchange unit and to M2 water heaters.

[0045] N return water three-way valves 300 are respectively installed on the connecting pipe between each heat exchange unit and the air conditioner return water pipe 100, and each return water three-way valve 300 has a connection port connected to the water heater return water pipe 200.

[0046] N outlet three-way valves 400 are respectively installed on the connecting pipe between each heat exchange unit and the air conditioner outlet water pipe 101, and each outlet three-way valve 400 has a connection port connected to the water outlet water pipe 201 of the water heater.

[0047] Among them, N return water three-way valves 300 and N outlet water three-way valves 400 can be opened or closed in a controlled manner to start or stop the supply of cold water to M1 indoor units, and / or to start or stop the supply of hot water to M2 water heaters. N, M1, and M2 are integers greater than 1.

[0048] The multi-split water-cooled system provided in this embodiment of the invention features N return water three-way valves, each connected to the air conditioning return water pipe of each heat exchange unit, and each return water three-way valve has a connection port for connecting to the water heater return water pipe. Similarly, N outlet water three-way valves are also connected to the air conditioning outlet water pipe of each heat exchange unit, and each outlet water three-way valve has a connection port for connecting to the water heater outlet water pipe. Thus, this embodiment of the invention allows for the start / stop of cold water supply to multiple indoor units and hot water supply to multiple water heaters by adjusting the opening state of the N return water three-way valves and / or the N outlet water three-way valves, thereby meeting different user needs.

[0049] Based on the above multi-split water cooling system, combined with Figure 3 As shown in the embodiments of this disclosure, a control method for a multi-split water-cooled system is provided, including:

[0050] S01, when the multi-split water-cooled system is operating in combined mode, the processor obtains the current comfort level ratio and the capacity value of each heat exchange unit.

[0051] S02, the processor determines the target new capacity and target mode based on the current comfort ratio and the target comfort ratio.

[0052] S03, the processor selects the target heat exchange unit based on the target new capacity and the capacity value of each heat exchange unit, and controls the target heat exchange unit to execute the target mode.

[0053] The combined mode includes a mode that combines air conditioning mode and hot water mode, while the target mode includes either air conditioning mode or hot water mode. In the combined mode, some heat exchange units operate in air conditioning mode, while some or all of the other heat exchange units operate in hot water mode. The other heat exchange units refer to those other than those operating in air conditioning mode. In the target mode, all operating heat exchange units operate in air conditioning mode, or all operating heat exchange units operate in hot water mode.

[0054] The control method for a multi-split water-cooled system provided in this disclosure, when the multi-split water-cooled system is operating in a combined mode, obtains the current comfort level ratio and the capacity value of each heat exchange unit. Based on the current comfort level ratio and the target comfort level ratio, it determines the target additional capacity and the target mode, thus determining the additional capacity value required to update the current comfort level ratio to the target comfort level ratio and the operating mode required to achieve the additional capacity value. This disclosure then selects the target heat exchange unit in the multi-split water-cooled system based on the target additional capacity and the capacity value of each heat exchange unit, and controls the target heat exchange unit to execute the target mode. In this way, this disclosure can adjust the operating modes of multiple heat exchange units according to the target comfort level ratio, so that the adjusted combination of heat exchange units can meet the target comfort requirements, thereby improving the adaptability and practicality of the multi-split water-cooled system control and enhancing user comfort.

[0055] Optionally, the processor obtains the current comfort level ratio, including:

[0056] Processor computing Comfort air =1-[|T air -T set1 | / T set1 ].

[0057] Processor computing Comfort hot =1-[|T set2 -T hot | / T set2 ], T set2 >T hot .

[0058] Processor computing rate cur =Comfort air / (Comfort air +Comfort hot ).

[0059] Among them, T air T set1These represent the average actual water temperature of the current heat exchange unit operating in air conditioning mode and the water temperature threshold of the current heat exchange unit operating in air conditioning mode, respectively. air This indicates the comfort level of the air conditioner, and the air conditioner mode includes heating mode or cooling mode.

[0060] T hot T set2 These represent the average actual water temperature and the threshold water temperature of the current heat exchange unit operating in hot water mode, respectively. Comfort hot This indicates the comfort level of hot water.

[0061] Rate cur This indicates the current comfort level.

[0062] Thus, in this embodiment of the present disclosure, the difference between the actual average water temperature and the water temperature threshold when the heat exchange unit is currently operating in air conditioning mode is compared with the water temperature threshold to calculate and generate air conditioning comfort. In this embodiment of the present disclosure, the difference between the average water temperature and the water temperature threshold when the heat exchange unit is currently operating in hot water mode is compared with the water temperature threshold to calculate and generate hot water comfort.

[0063] Thus, this embodiment of the present disclosure can calculate and generate air conditioning comfort level based on the ratio of the absolute value of the difference between the actual average water temperature of the current heat exchange unit in heating or cooling mode and the water temperature threshold in heating or cooling mode to the aforementioned water temperature threshold. Simultaneously, when the water temperature threshold in hot water mode is higher than the actual average water temperature of the current heat exchange unit operating in hot water mode, this embodiment of the present disclosure uses the ratio of the actual average water temperature to the water temperature threshold in hot water mode to calculate and generate hot water comfort level. Based on this, this embodiment of the present disclosure compares the air conditioning comfort level with the sum of its air conditioning and hot water comfort levels to accurately calculate and obtain the current comfort level ratio. This improves the accuracy of the current comfort level ratio calculation.

[0064] It should be noted that, under the current condition that the heat exchange unit is operating in heating mode, T air <T set1 T set1 This indicates the water temperature threshold when the heat exchange unit is operating in heating mode.

[0065] With the heat exchange unit currently operating in cooling mode, T air >T set1 T set1 This indicates the water temperature threshold when the heat exchange unit is operating in cooling mode.

[0066] Understandably, with the current heat exchange unit operating in hot water mode and T set2 ≤T hot In the case of Comforthot = 1. In this way, when the current heat exchange unit operates in the hot water mode and T set2 ≤ T hot , it indicates that the average actual water temperature of the current heat exchange unit operating in the hot water mode is equal to or higher than the water temperature threshold in the hot water mode. At this time, the hot water comfort level reaches the upper limit value of 1. Therefore, when the current heat exchange unit operates in the hot water mode and T set2 ≤ T hot , set the hot water comfort level Comfort hot to 1.

[0067] Optionally, the processor determines the target additional capacity and the target mode according to the current comfort level ratio and the target comfort level ratio, including:

[0068] When Rate cur -Rate set < Thre1, the processor determines that the target additional capacity CAP addair is CAP sumair × (Rate set -Rate cur ), and determines that the target mode is the air conditioning mode.

[0069] When Rate cur -Rate set > Thre2, the processor determines that the target additional capacity CAP addhot is CAP sumhot × (Rate cur -Rate set ), and determines that the target mode is the hot water mode.

[0070] Among them, CAP sumair represents the total capacity of all heat exchange units operating in the air conditioning mode, CAP sumhot represents the total capacity of all heat exchange units operating in the hot water mode, Rate cur represents the current comfort level ratio, Rate set represents the target comfort level ratio, and Thre1 and Thre2 respectively represent the first ratio threshold and the second ratio threshold, and Thre1 < 0 < Thre2.

[0071] In this way, when Rate cur -Rate setWhen Thre1, it indicates that the current comfort ratio value is small and the air-conditioning comfort is small, indicating a need to increase the number of heat exchange units operating in the air-conditioning mode. For this purpose, in the embodiments of the present disclosure, the difference between the current comfort ratio and the target comfort ratio is multiplied by the total capacity of all heat exchange units operating in the air-conditioning mode to determine the capacity value that needs to be newly added for operation in the air-conditioning mode. And when Rate cur -Rate set >Thre2, it indicates that the current comfort ratio value is large and the hot water comfort is small, indicating a need to increase the number of heat exchange units operating in the hot water mode. For this purpose, in the embodiments of the present disclosure, the difference between the current comfort ratio and the target comfort ratio is multiplied by the total capacity of all heat exchange units operating in the hot water mode to determine the capacity value that needs to be newly added for operation in the hot water mode. Thus, in the embodiments of the present disclosure, the operation mode of the heat exchange units can be adaptively adjusted according to the capacity value that needs to be newly added for operation in the air-conditioning mode / hot water mode, so that the adjusted combination of heat exchange units can meet the target comfort requirements, improving the self-adaptability and practicability of the regulation of the multi-connected unit water-cooled system and enhancing the user's comfort.

[0072] Optionally, the specific value of Thre1 can be determined according to specific requirements. As an example, Thre1 is -10%, or Thre1 is -20%. It can be understood that Thre1 can also be other values less than zero. The specific value of Thre2 can also be determined according to specific requirements. As an example, Thre2 is 10%, or Thre2 is 20%. It can be understood that Thre2 can also be other values greater than zero.

[0073] Optionally, the processor determines the target new capacity and the target mode according to the current comfort ratio and the target comfort ratio, including:

[0074] When Rate cur -Rate set <Thre1, the processor determines that the target new capacity CAP addair is CAP sumair ×(Rate set -Rate cur ), and determines that the target mode is the air-conditioning mode.

[0075] When Rate cur -Rate set >Thre2, the processor determines that the target new capacity CAP addhot is CAP sumhot ×(Rate cur -Rate set ), and determines that the target mode is the hot water mode.

[0076] When Thre1≤Rate cur -Rate set If the threshold is ≤Thre2, the operating mode of each heat exchange unit remains unchanged.

[0077] Among them, CAP sumair CAP represents the total capacity of all heat exchange units operating in air conditioning mode. sumhot Rate represents the total capacity of all heat exchange units operating in hot water mode. cur Rate set Thre1 and Thre2 represent the current comfort level ratio and the target comfort level ratio, respectively, and the first and second ratio thresholds represent the first and second ratio thresholds, respectively, with Thre1 < 0. <Thre2。

[0078] Thus, when Thre1≤Rate cur -Rate set When Thre1 ≤ Thre2, it indicates that the current comfort level is within a reasonable range, and there is no need to adjust the operating mode of each heat exchange unit. Therefore, in this embodiment of the disclosure, when Thre1 ≤ Rate... cur -Rate set When the threshold is ≤Thre2, the operating mode of each heat exchange unit remains unchanged.

[0079] Optionally, combined Figure 4 As shown, the processor selects a target heat exchange unit based on the target increase in capacity and the capacity value of each heat exchange unit, and controls the target heat exchange unit to execute the target mode, including:

[0080] S11, the processor determines the candidate heat exchange unit to run in the first mode and calculates the capacity value of the candidate heat exchange unit.

[0081] S12, the processor selects the candidate heat exchange unit with the smallest difference from the target new capacity as the target heat exchange unit.

[0082] S13, the processor controls the target heat exchange unit to execute the second mode.

[0083] The first mode is air conditioning mode and the second mode is hot water mode, or the first mode is hot water mode and the second mode is air conditioning mode.

[0084] In this embodiment, after determining the target new capacity and target mode, the first step is to identify candidate heat exchange units for operating in the first mode and calculate their capacity values. Then, the candidate heat exchange unit with the smallest difference from the target new capacity is selected as the target heat exchange unit. Finally, the target heat exchange unit is controlled to execute the second mode. Thus, this embodiment can precisely control and combine heat exchange units based on the calculated target new capacity and target mode, ensuring that the adjusted heat exchange unit combination meets the target comfort requirements, improving the adaptability of the multi-split water-cooled system control, and enhancing user comfort.

[0085] Optionally, combined Figure 5 As shown, the processor determines that the multi-split water cooling system will operate in combined mode in the following manner:

[0086] S21, the processor obtains the total capacity of all heat exchange units and the air conditioning reference ratio.

[0087] S22, the processor determines the initial heat exchange unit to operate in air conditioning mode based on the total capacity and air conditioning reference ratio.

[0088] S23, the processor controls the initial heat exchange unit to operate in air conditioning mode, and controls other heat exchange units to operate in hot water mode.

[0089] Thus, after obtaining the total capacity of all heat exchange units and the air conditioning reference ratio, this embodiment determines the initial heat exchange units to operate in air conditioning mode based on the total capacity and the air conditioning reference ratio. This ensures the accurate determination of the heat exchange units required to operate in air conditioning mode to meet the air conditioning reference ratio requirements. This embodiment then controls the initial heat exchange units to operate in air conditioning mode and controls the other heat exchange units to operate in hot water mode. In this way, this embodiment can accurately calculate the initial heat exchange units operating in air conditioning mode and the heat exchange units operating in hot water mode based on specific air conditioning reference ratio requirements and the total capacity of all heat exchange units, achieving precise control of the heat exchange unit combination, improving the adaptability and practicality of the multi-split water-cooled system control, and enhancing user comfort.

[0090] Optionally, combined Figure 1 As shown, in practical applications, the processor controls the initial heat exchange unit to operate in air conditioning mode, and controls other heat exchange units to operate in hot water mode, including:

[0091] The processor controls the opening of the return water three-way valve on the air conditioner return water pipe corresponding to the initial heat exchange unit, and controls the opening of the outlet water three-way valve on the air conditioner outlet water pipe corresponding to the initial heat exchange unit, so as to control the corresponding indoor unit to turn on and realize the operation of the air conditioner mode.

[0092] At the same time, the processor determines the return water three-way valve corresponding to other heat exchange units, and then controls the connection port of the above-mentioned return water three-way valve to control the corresponding water heater to turn on and realize the hot water operation mode.

[0093] Optionally, combined Figure 6 As shown, the processor determines the initial heat exchange unit to operate in air conditioning mode based on the total capacity and air conditioning baseline ratio, including:

[0094] S31, the processor will have a total capacity CAP SUM The product of the air conditioning base ratio Rate0 and the reference capacity value HP is used as the reference capacity value. air0 .

[0095] S32, the processor selects the heat exchange unit that meets the initial capacity conditions as the initial heat exchange unit.

[0096] The initial capacity condition is: HUCAP i ≤HP air0 HUCAP i Let be the capacity value of the i-th heat exchange unit.

[0097] This ensures that the air conditioning comfort ratio value corresponding to the regulated heat exchange unit combination is compatible with the air conditioning baseline ratio Rate0, which helps to improve the adaptability of the multi-split water-cooled system regulation.

[0098] It should be noted that the processor selected meets HUCAP requirements. i ≤HP air0 The heat exchange unit is used as the initial heat exchange unit, and it also includes: when the number of heat exchange units that meet the initial capacity condition is greater than 1, |HUCAP is selected. i -HP air0 The smallest heat exchange unit is used as the initial heat exchange unit. In this way, the air conditioning comfort ratio value corresponding to the adjusted heat exchange unit combination can be as close as possible to the air conditioning reference ratio Rate0, thereby improving the accuracy of the heat exchange unit combination control.

[0099] In addition, the processor selected meets HUCAP requirements. i ≤HP air0 The heat exchange unit is used as the initial heat exchange unit, and it also includes: when the number of heat exchange units that meet the initial capacity condition is greater than 1, |HUCAP is selected. i -HP air0 The second smallest heat exchange unit is used as the initial heat exchange unit. This disclosure does not specifically limit this aspect. It is understood that the processor selects the unit that satisfies HUCAP. i ≤HP air0When a heat exchange unit is used as the initial heat exchange unit, if the number of heat exchange units satisfying the initial capacity condition is greater than 1, the processor can start from the point that satisfies HUCAP. i ≤HP air0 Any heat exchange unit in the system is used as the initial heat exchange unit. The selected heat exchange unit is connected to HP. air0 The smaller the difference, the closer the adjusted heat exchange unit combination's corresponding air conditioning comfort ratio is to the air conditioning baseline ratio. Ideally, HUCAP... i =HP air0 The adjusted heat exchange unit combination corresponds to the air conditioning comfort ratio value, which is equal to the air conditioning benchmark ratio.

[0100] In one specific embodiment, the multi-split water-cooled system is configured with five heat exchange units, namely HU_1, HU_2, HU_3, HU_4, and HU_5. The capacities of the five heat exchange units are 2 HP (horsepower), 3 HP, 5 HP, 4 HP, and 1 HP, respectively. Rate 0 is 30%.

[0101] The processor determines whether the multi-split water cooling system operates in combined mode as follows:

[0102] Step S101: The processor obtains the total capacity CAP of all heat exchange units. SUM And the air conditioning benchmark ratio Rate0.

[0103] Among them, CAP SUM =ΣHUCAP i , i = 1, 2, ..., N. HUCAP i Let be the capacity value of the i-th heat exchange unit. The CAP value is obtained through calculation. SUM =15HP.

[0104] Step S102, the processor will calculate the total capacity CAP. SUM The product of the air conditioning base ratio Rate0 and the reference capacity value HP is used as the reference capacity value. air0 . That is HP air0 =CAP SUM ×Rate0. HP was calculated. air0 =4.5HP.

[0105] Step S103, the processor is selected to satisfy CAP. sum ≤HP air0 The heat exchange unit HU_4 was selected as the initial heat exchange unit. Since the capacity value of heat exchange unit HU_4, 4.5HP, is the closest, the processor selected heat exchange unit HU_4 as the initial heat exchange unit.

[0106] In step S104, the processor controls the three-way valve on the air conditioner return water pipe corresponding to heat exchange unit HU_4 to open, and also controls the outlet three-way valve on the air conditioner outlet water pipe corresponding to heat exchange unit HU_4 to open, thereby controlling the operation of the air conditioning mode. Simultaneously, the processor determines the return water three-way valves corresponding to HU_1, HU_2, HU_3, and HU_5, and then controls the connection ports of all four return water three-way valves to be connected, thereby controlling the operation of the hot water mode.

[0107] Combination Figure 7 As shown, this disclosure provides a control device for a multi-split water-cooled system, including a processor 500 and a memory 501. Optionally, the device may further include a communication interface 502 and a bus 503. The processor 500, communication interface 502, and memory 501 can communicate with each other via the bus 503. The communication interface 502 can be used for information transmission. The processor 500 can call logical instructions in the memory 501 to execute the control method for the multi-split water-cooled system described in the above embodiment.

[0108] Furthermore, the logic instructions in the aforementioned memory 501 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0109] The memory 501, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 500 executes functional applications and data processing by running the program instructions / modules stored in the memory 501, thereby implementing the control method for the multi-unit water-cooled system described in the above embodiments.

[0110] The memory 501 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 501 may include high-speed random access memory and may also include non-volatile memory.

[0111] Combination Figure 2As shown in the embodiments of this disclosure, a multi-split water-cooled system is also provided, including N outdoor units, N heat exchange units (HU_1, HU_2, ..., HU_N), M1 indoor units, M2 water heaters, an air conditioner return water pipe 100, a water heater return water pipe 200, an air conditioner outlet water pipe 101, a water heater outlet water pipe 201, N return water three-way valves 300, N outlet water three-way valves 400, and a control device for the multi-split water-cooled system as described above. The air conditioner return water pipe 100 is connected to each heat exchange unit and to the M1 indoor units. The water heater return water pipe 200 is connected to each heat exchange unit and to the M2 water heaters. The air conditioner outlet water pipe 101 is connected to each heat exchange unit and to the M1 indoor units. The water heater outlet water pipe 201 is connected to each heat exchange unit and to the M2 water heaters. N return water three-way valves 300 are respectively installed on the connecting pipe between each heat exchange unit and the air conditioner return water pipe 100, and each return water three-way valve 300 has a connection port for connecting to the water heater return water pipe 200. N outlet water three-way valves 400 are respectively installed on the connecting pipe between each heat exchange unit and the air conditioner outlet water pipe 101, and each outlet water three-way valve 400 has a connection port for connecting to the water heater outlet water pipe 201. A control device for the multi-split water-cooled system is electrically connected to the N return water three-way valves 300 and the N outlet water three-way valves 400.

[0112] Among them, N return water three-way valves 300 and N outlet water three-way valves 400 can be opened or closed in a controlled manner to start or stop the supply of cold water to M1 indoor units, and / or to start or stop the supply of hot water to M2 water heaters. N, M1, and M2 are integers greater than 1.

[0113] The multi-split water-cooled system provided in this embodiment of the invention comprises N return water three-way valves respectively installed on the connecting pipes between each heat exchange unit and the air conditioning return water pipe, and each return water three-way valve having a connection port for connecting to the water heater return water pipe. Simultaneously, N outlet water three-way valves are respectively installed on the connecting pipes between each heat exchange unit and the air conditioning outlet water pipe, and each outlet water three-way valve has a connection port for connecting to the water heater outlet water pipe. Thus, this embodiment of the invention allows for the start / stop of cold water supply to multiple indoor units and hot water supply to multiple water heaters by adjusting the opening states of the N return water three-way valves and / or the N outlet water three-way valves, thereby meeting different user needs.

[0114] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to execute the above-described control method for a multi-unit water-cooled system.

[0115] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0116] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0117] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0118] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0119] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0120] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A control method for a multi-split water cooling system, characterized in that, The method comprises the following steps: In the case that the multi-split water cooling system is operated in the combined mode, a current comfort degree ratio and a capacity value of each heat exchange unit are obtained; According to the current comfort degree ratio and a target comfort degree ratio, a target additional capacity and a target mode are determined; According to the target additional capacity and the capacity value of each heat exchange unit, a target heat exchange unit is selected, and the target heat exchange unit is controlled to execute the target mode; The combined mode comprises a mode in which the air conditioning mode and the hot water mode are combined to operate, and the target mode comprises the air conditioning mode or the hot water mode. The current comfort degree ratio is obtained by the following steps: Compute Comfort air =1-[|T air -T set1 | / T set ]; Compute Comfort hot =1-[|T set2 -T hot | / T set2 ], T set2 >T hot ; Compute Rate cur = Comfort air / (Comfort air + Comfort hot ); wherein T air , T set1 respectively represent the actual water temperature average of the current heat exchange unit in air conditioning mode and the water temperature threshold of the current heat exchange unit in air conditioning mode, Comfort air represents the air conditioning comfort, and the air conditioning mode includes heating mode or cooling mode; T hot , T set2 respectively represent the actual water temperature average of the current heat exchange unit in hot water mode and the water temperature threshold of the current heat exchange unit in hot water mode, Comfort hot represents the hot water comfort; Rate cur represents the current comfort ratio.

2. The method of claim 1, wherein, The target additional capacity and the target mode are determined according to the current comfort degree ratio and the target comfort degree ratio by the following steps: At Rate cur -Rate set When <Thre1>, determine the target additional capacity CAP addair as CAP sumair × (Rate set -Rate cur ), and determine the target mode as the air conditioner mode; In Rate cur -Rate set In the case of Rate addhot For CAP sumhot × (Rate curt -Rate set ), and determine the target mode as hot water mode; wherein CAP sumair represents the total capacity of all heat exchange units operating in the air conditioning mode, CAP sumhot represents the total capacity of all heat exchange units operating in the hot water mode, Rate cur represents the current comfort ratio, Rate set represents the target comfort ratio, Thre1 and Thre2 represent the first ratio threshold and the second ratio threshold, respectively, and Thre1 < 0 < Thre2.

3. The method of claim 2, wherein, The target heat exchange unit is selected according to the target additional capacity and the capacity value of each heat exchange unit, and the target heat exchange unit is controlled to execute the target mode by the following steps: A candidate heat exchange unit operating in a first mode is determined, and a capacity value of the candidate heat exchange unit is calculated; The candidate heat exchange unit with the minimum difference value from the target additional capacity is selected as the target heat exchange unit; The target heat exchange unit is controlled to execute a second mode; The first mode is the air conditioning mode and the second mode is the hot water mode, or The first mode is the hot water mode and the second mode is the air conditioning mode.

4. The method of claim 2, wherein, The target additional capacity and the target mode are determined according to the current comfort degree ratio and the target comfort degree ratio by the following steps: In the case of Thre1≤Rate cur -Rate set ≤Thre2, the operation mode of each heat exchange unit is maintained unchanged.

5. The method according to any one of claims 1 to 4, characterized in that, The multi-split water cooling system is operated in the combined mode by the following steps: The total capacity of all heat exchange units and an air conditioning reference ratio are obtained; According to the total capacity and the air conditioning reference ratio, an initial heat exchange unit operating in the air conditioning mode is determined; The initial heat exchange unit is controlled to operate in the air conditioning mode, and other heat exchange units are controlled to operate in the hot water mode.

6. The method of claim 5, wherein, The initial heat exchange unit operating in the air conditioning mode is determined according to the total capacity and the air conditioning reference ratio by the following steps: The total capacity CAP SUM The product of the air conditioning reference ratio Rate0 and the total capacity CAP is taken as the reference capacity value HP air0 ; The heat exchange unit satisfying an initial capacity condition is selected as the initial heat exchange unit. Wherein, the initial capacity condition is: HUCAP i ≤ HP air0 , HUCAP i is the capacity value of the i-th heat exchange unit.

7. A control device for a water cooling system of a multi-split air conditioning system, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute the control method for the multi-split water cooling system as claimed in any one of claims 1 to 6 when the program instructions are executed.

8. A water cooling system for a multi-split air conditioning system, characterized in that, The method comprises the following steps: N outdoor units, N being an integer greater than 1; N heat exchange units; M1 indoor units, M1 being an integer greater than 1; M2 water heaters, M2 being an integer greater than 1; An air conditioning return water pipeline connected with each heat exchange unit and connected with the M1 indoor units; A water heater return water pipeline connected with each heat exchange unit and connected with the M2 water heaters; An air conditioning outlet water pipeline connected with each heat exchange unit and connected with the M1 indoor units; A water heater outlet water pipeline connected with each heat exchange unit and connected with the M2 water heaters; N return water three-way valves respectively arranged on the connection pipelines of each heat exchange unit and the air conditioning return water pipeline, each return water three-way valve having a connection port connected with the water heater return water pipeline; N outlet water three-way valves respectively arranged on the connection pipelines of each heat exchange unit and the air conditioning outlet water pipeline, each outlet water three-way valve having a connection port connected with the water heater outlet water pipeline; and The control device for the multi-split water cooling system as claimed in claim 7 is electrically connected with the N return water three-way valves and the N outlet water three-way valves. Wherein, the N water return three-way valves and the N water outlet three-way valves can be controlled to open or close, so as to start or stop supplying cold water to the M1 indoor units, and / or, to start or stop supplying hot water to the M2 water heaters.

9. A storage medium storing program instructions, characterized in that, The program instructions, when executed, perform the control method for the water cooling system of the multi-split air conditioner as claimed in any one of claims 1 to 6.

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