Air conditioner control method and device, air conditioner and computer readable storage medium

Abstract

Embodiments of the present application provide an air conditioner control method and device, an air conditioner and a computer readable storage medium, and relate to the technical field of air conditioner control. The compressor exhaust port is connected with the first port of the total three-way reversing valve and each sub three-way reversing valve, the compressor suction port is connected with the second port of the total three-way reversing valve and each sub three-way reversing valve, the third port of the total three-way reversing valve is connected with the outdoor heat exchanger, and the third port of each sub three-way reversing valve is connected with the corresponding indoor heat exchange unit. The operation instruction sent by the user is received. The target operation mode is included in the operation instruction. The total three-way reversing valve and the sub three-way reversing valve are controlled to reverse according to the target operation mode, and the control valve is controlled to open and close, so that the refrigerant is heat-exchanged through the indoor heat exchange unit corresponding to the target operation mode, and the target operation mode is executed. In this way, the functional combination diversity of the air conditioner can be improved, and the actual needs of the user for diversification and scene can be effectively responded.

Description

Technical Field

[0001] This application relates to the field of air conditioning control technology, and more specifically, to an air conditioning control method, device, air conditioner, and computer-readable storage medium. Background Technology

[0002] With increasing demands for building energy efficiency and the diversification of user lifestyles, the functional requirements of air conditioners are gradually evolving from simple cooling or heating to multi-objective coordinated energy supply. For example, in winter, indoor heating is needed, while other areas, such as cold storage facilities, require simultaneous cooling to maintain a low-temperature environment. In places like hotels or hospitals, air conditioning needs to be provided for guest rooms, a stable supply of domestic hot water is required, and even cooling water for specific equipment is needed. This type of complex demand that simultaneously meets multiple operating modes has become the current application trend of air conditioners.

[0003] However, in related technologies, air conditioners often cannot perform multiple functions simultaneously, resulting in poor functional combinability and diversity, and failing to truly meet the diverse needs of users. Summary of the Invention

[0004] The problem addressed in this application is how to enable air conditioners to perform multiple functions simultaneously, thereby increasing the diversity of air conditioner function combinations and meeting the diverse needs of users.

[0005] To address the aforementioned problems, this application provides an air conditioning control method, apparatus, air conditioner, and computer-readable storage medium.

[0006] In a first aspect, this application provides an air conditioning control method applied to an air conditioner. The air conditioner includes multiple indoor heat exchange units, a main three-way reversing valve, and multiple branch three-way reversing valves, each branch three-way reversing valve corresponding to one indoor heat exchange unit. The compressor discharge port is connected to the first port of the main three-way reversing valve and each of the branch three-way reversing valves, the compressor suction port is connected to the second port of the main three-way reversing valve and each of the branch three-way reversing valves, and the third port of the main three-way reversing valve is connected to an outdoor heat exchanger. The third port of each branch three-way reversing valve is connected to its corresponding indoor heat exchange unit, and each indoor heat exchange unit is also connected to the outdoor heat exchanger via a corresponding control valve. The indoor heat exchange unit includes an indoor unit and a water tank. The method includes: Receives operation instructions sent by the user; the operation instructions include a target operation mode, and the target operation mode is at least one of cooling mode, heating mode, hot water mode and chilled water mode, and when there are multiple target operation modes, each target operation mode operates simultaneously; According to the target operating mode, the main three-way reversing valve and each of the branch three-way reversing valves are reversing control, and the control valves corresponding to each of the indoor heat exchange units are opening and closing control, so that the refrigerant can exchange heat through the indoor heat exchange unit corresponding to the target operating mode and execute the target operating mode.

[0007] The air conditioning control method provided in this application includes an air conditioner comprising a main three-way reversing valve and multiple branch three-way reversing valves. Each branch three-way reversing valve corresponds to an indoor heat exchange unit. The compressor's exhaust port and intake port are connected to the first and second ports of the main three-way reversing valve and each branch three-way reversing valve, respectively. The third port of the main three-way reversing valve is connected to the outdoor heat exchanger, and the third ports of each branch three-way reversing valve are connected to their respective indoor heat exchange units. Simultaneously, each indoor heat exchange unit is also connected to the outdoor heat exchanger through its corresponding control valve. Based on this structure, the air conditioner can receive operating instructions sent by the user. These instructions include at least one target operating mode. When multiple target operating modes exist, the air conditioner needs to operate them simultaneously. Subsequently, the air conditioner can coordinate the reversing and opening / closing control of the main three-way reversing valve, each branch three-way reversing valve, and the control valves corresponding to each indoor heat exchange unit according to the target operating mode specified in the instruction. This guides the refrigerant to flow as needed through the corresponding indoor heat exchange unit to complete heat exchange, achieving the required functional combination. In this way, by setting a main three-way reversing valve and multiple branch three-way reversing valves in the air conditioner, the refrigerant flow direction can be flexibly configured, so that the air conditioner is no longer limited to single-function operation, but can simultaneously perform any combination of cooling, heating, hot water production, and chilled water production in the same period of time, thereby improving the functional combination diversity of the air conditioner and effectively responding to the diverse and scenario-based actual needs of users.

[0008] In an optional implementation, the target operating mode is a cooling mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valve corresponding to the indoor unit to be cooled, and close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be cooled. The first and third ports of the main three-way reversing valve are connected, and the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled are connected, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, and then enters the indoor unit to be cooled through the outdoor heat exchanger for heat exchange. After heat exchange, it returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing the cooling mode.

[0009] The air conditioning control method provided in this application embodiment allows the air conditioner to achieve cooling of the indoor unit to be cooled by controlling the opening and closing of the control valves of each indoor heat exchange unit, as well as controlling the conduction of the ports of the main three-way reversing valve and the branch three-way reversing valve.

[0010] In an optional implementation, the target operating mode is a heating mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valve corresponding to the indoor unit to be heated, and close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be heated. The second and third ports of the main three-way reversing valve are connected, and the first and third ports of the branch three-way reversing valve corresponding to the indoor unit to be heated are connected, so that the refrigerant enters the indoor unit to be heated through the branch three-way reversing valve corresponding to the indoor unit to be heated for heat exchange, and returns to the compressor through the outdoor heat exchanger after heat exchange, thus executing the heating mode.

[0011] The air conditioning control method provided in this application allows the air conditioner to heat the indoor unit by controlling the opening and closing of the control valves of each indoor heat exchange unit and controlling the connection of the ports of the main three-way reversing valve and the branch three-way reversing valve.

[0012] In an optional implementation, the target operating mode is a hot water production mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valve corresponding to the hot water tank to be produced, and close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange unit, except for the hot water tank to be produced. The second and third ports of the main three-way reversing valve are connected, and the first and third ports of the branch three-way reversing valve corresponding to the hot water tank are connected, so that the refrigerant enters the hot water tank through the branch three-way reversing valve corresponding to the hot water tank for heat exchange, and returns to the compressor through the outdoor heat exchanger after heat exchange, thus executing the hot water production mode.

[0013] The air conditioning control method provided in this application embodiment allows the air conditioner to produce hot water from the hot water tank by controlling the opening and closing of the control valves of each indoor heat exchange unit and controlling the connection of the ports of the main three-way reversing valve and the branch three-way reversing valve.

[0014] In an optional implementation, the target operating mode is a chilled water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valve corresponding to the water tank to be cooled, and close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange unit, except for the water tank to be cooled. The first and third ports of the main three-way reversing valve are connected, and the second and third ports of the branch three-way reversing valve corresponding to the water tank to be cooled are connected, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, and then enters the water tank to be cooled through the outdoor heat exchanger for heat exchange. After heat exchange, it returns to the compressor through the branch three-way reversing valve corresponding to the water tank to be cooled, thus executing the cooling water mode.

[0015] The air conditioning control method provided in this application embodiment allows the air conditioner to control the opening and closing of the control valves of each indoor heat exchange unit, as well as the conduction of the ports of the main three-way reversing valve and the branch three-way reversing valve, to realize the cooling water in the water tank to be cooled.

[0016] In an optional implementation, the target operating mode is a cooling mode and a hot water production mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the indoor unit to be cooled and the hot water tank to be heated, and close the control valves corresponding to other indoor heat exchange units except for the indoor unit to be cooled and the hot water tank to be heated; The system controls the first and third ports of the main three-way reversing valve to be open, the first and third ports of the branch three-way reversing valve corresponding to the hot water tank to be produced to be open, and the second and third ports of the indoor unit to be cooled to be open, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, enters the indoor unit to be cooled through the outdoor heat exchanger for heat exchange, and enters the hot water tank to be produced through the branch three-way reversing valve corresponding to the hot water tank to be produced for heat exchange. After heat exchange, it merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled for heat exchange. After heat exchange, it returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing the cooling mode and the hot water production mode.

[0017] The air conditioning control method provided in this application allows the air conditioner to simultaneously achieve the combined cooling and hot water production functions of the indoor unit to be cooled and the hot water tank to be produced by controlling the opening and closing of the control valves of each indoor heat exchange unit and controlling the conduction of the ports of the main three-way reversing valve and the branch three-way reversing valve.

[0018] In an optional implementation, the target operating mode is a cooling mode and a cooling water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the water tank to be cooled and the indoor unit to be cooled, and close the control valves corresponding to other indoor heat exchange units except for the water tank to be cooled and the indoor unit to be cooled; The first and third ports of the main three-way reversing valve are connected, as are the second and third ports of the indoor unit to be cooled and the water tank to be cooled, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, and then enters the water tank to be cooled and the indoor unit to be cooled for heat exchange through the outdoor heat exchanger. After heat exchange, the refrigerant returns to the compressor through the corresponding three-way reversing valves of the indoor unit to be cooled and the water tank to be cooled, thus executing the cooling mode and the chilled water mode.

[0019] The air conditioning control method provided in this application embodiment allows the air conditioner to simultaneously achieve the combined cooling and cooling functions of the indoor unit to be cooled and the water tank to be cooled by controlling the opening and closing of the control valves of each indoor heat exchange unit and controlling the conduction of the ports of the main three-way reversing valve and the branch three-way reversing valve.

[0020] In an optional implementation, the target operating mode is a heating mode and a hot water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the hot water tank and the indoor unit to be heated, and close the control valves corresponding to other indoor heat exchange units except for the hot water tank and the indoor unit to be heated; The second and third ports of the main three-way reversing valve are connected, and the first and third ports of the corresponding three-way reversing valves of the hot water tank and the indoor unit to be heated are connected, so that the refrigerant enters the hot water tank and the indoor unit to be heated through the corresponding three-way reversing valves for heat exchange, and returns to the compressor through the outdoor heat exchanger after heat exchange, thus executing the heating mode and the hot water mode.

[0021] The air conditioning control method provided in this application allows the air conditioner to simultaneously achieve the combined heating and hot water production functions of the indoor unit to be heated and the hot water tank to be heated by controlling the opening and closing of the control valves of each indoor heat exchange unit and controlling the conduction of the ports of the main three-way reversing valve and the branch three-way reversing valve.

[0022] In an optional implementation, the target operating mode is a heating mode and a cooling water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the indoor unit to be heated and the water tank to be cooled, and close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be heated and the water tank to be cooled. The second and third ports of the main three-way reversing valve, the first and third ports of the branch three-way reversing valve corresponding to the indoor unit to be heated, and the second and third ports of the branch three-way reversing valve corresponding to the water tank to be cooled are connected, so that the refrigerant enters the indoor unit to be heated through the branch three-way reversing valve corresponding to the indoor unit to be heated for heat exchange, and after heat exchange, returns to the compressor through the outdoor heat exchanger, and enters the water tank to be cooled through the control valve corresponding to the water tank to be cooled for heat exchange, and after heat exchange, returns to the compressor through the branch three-way reversing valve corresponding to the water tank to be cooled, thus executing the heating mode and the cooling water mode.

[0023] The air conditioning control method provided in this application allows the air conditioner to simultaneously achieve the combined function of heating and cooling water in the indoor unit to be heated and the water tank to be cooled by controlling the opening and closing of the control valves of each indoor heat exchange unit and controlling the conduction of the ports of the main three-way reversing valve and the branch three-way reversing valve.

[0024] In an optional implementation, the target operating mode is a cooling mode and a heating mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the indoor unit to be cooled and the indoor unit to be heated, and close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be cooled and the indoor unit to be heated. If the main target operating mode is the cooling mode, then the first and third ports of the main three-way reversing valve, the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled, and the first and third ports of the branch three-way reversing valve of the indoor unit to be heated are opened, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, enters the indoor unit to be cooled through the outdoor heat exchanger for heat exchange, and enters the indoor unit to be heated through the branch three-way reversing valve corresponding to the indoor unit to be heated for heat exchange. After heat exchange, it merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled for heat exchange. After heat exchange, it returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing the cooling mode and the heating mode. If the primary target operating mode is heating mode, then the second and third ports of the main three-way reversing valve are connected, the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled are connected, and the first and third ports of the branch three-way reversing valve of the indoor unit to be heated are connected, so that the refrigerant enters the indoor unit to be heated through the branch three-way reversing valve of the indoor unit to be heated for heat exchange, and after heat exchange, returns to the compressor through the outdoor heat exchanger, and enters the indoor unit to be cooled through the control valve corresponding to the indoor unit to be cooled for heat exchange, and after heat exchange, returns to the compressor through the branch three-way reversing valve of the indoor unit to be cooled, thus executing the cooling mode and the heating mode.

[0025] The air conditioning control method provided in this application embodiment allows the air conditioner to simultaneously achieve the combined heating and cooling functions of the indoor unit to be heated and the indoor unit to be cooled by controlling the opening and closing of the control valves of each indoor heat exchange unit and controlling the port conduction of the main three-way reversing valve and the branch three-way reversing valve based on the main target operation mode, while ensuring the operation effect of the main target operation mode and the energy utilization efficiency of the air conditioner.

[0026] In an optional implementation, the target operating mode is a cooling water mode and a hot water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the water tank to be cooled and the hot water tank to be produced, and close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange unit, except for the water tank to be cooled and the hot water tank to be produced. The second and third ports of the main three-way reversing valve, the second and third ports of the branch three-way reversing valve corresponding to the water tank to be cooled, and the first and third ports of the branch three-way reversing valve of the water tank to be heated are connected, so that the refrigerant enters the water tank to be heated through the branch three-way reversing valve of the water tank to be heated for heat exchange, and after heat exchange, returns to the compressor through the outdoor heat exchanger, and enters the water tank to be cooled through the control valve corresponding to the water tank to be cooled for heat exchange, and after heat exchange, returns to the compressor through the branch three-way reversing valve of the water tank to be cooled, thus executing the cooling water mode and the hot water mode.

[0027] The air conditioning control method provided in this application allows the air conditioner to simultaneously achieve the combined function of producing hot water and cooling water from the hot water tank and the cooling water tank by controlling the opening and closing of the control valves of each indoor heat exchange unit and controlling the conduction of the ports of the main three-way reversing valve and the branch three-way reversing valve.

[0028] In an optional implementation, the target operating mode is a cooling mode, a heating mode, and a hot water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the indoor unit to be cooled, the indoor unit to be heated, and the hot water tank to be heated; close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be cooled, the indoor unit to be heated, and the hot water tank to be heated. If the main target operating mode is cooling mode, then the first and third ports of the main three-way reversing valve are opened, the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled are opened, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated and the hot water tank to be heated are opened, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, enters the indoor unit to be cooled through the outdoor heat exchanger for heat exchange, and enters the indoor unit to be heated and the hot water tank to be heated through the branch three-way reversing valves corresponding to the indoor unit to be heated and the hot water tank to be heated for heat exchange. After heat exchange, it merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled for heat exchange. After heat exchange, it returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing the cooling mode, the heating mode, and the hot water mode. If the primary target operating mode is heating mode, then the second and third ports of the main three-way reversing valve are connected, the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled are connected, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated and the hot water tank to be heated are connected. This allows the refrigerant to enter the indoor unit to be heated and the hot water tank to be heated through the branch three-way reversing valves of the indoor unit to be heated and the hot water tank to be heated for heat exchange. After heat exchange, the refrigerant returns to the compressor through the outdoor heat exchanger and enters the indoor unit to be cooled through the control valve corresponding to the indoor unit to be cooled for heat exchange. After heat exchange, the refrigerant returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing the cooling mode, the heating mode, and the hot water mode.

[0029] The air conditioning control method provided in this application embodiment allows the air conditioner to simultaneously achieve the combined functions of cooling, heating, and hot water production for the indoor unit to be cooled, the indoor unit to be heated, and the hot water tank to be produced, by controlling the opening and closing of the control valves of each indoor heat exchange unit and controlling the port conduction of the main three-way reversing valve and the branch three-way reversing valve based on the main target operating mode, while ensuring the operating effect of the main target operating mode and the energy utilization efficiency of the air conditioner.

[0030] In an optional implementation, the target operating mode is a cooling mode, a heating mode, and a chilled water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the indoor unit to be cooled, the indoor unit to be heated, and the water tank to be cooled; close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be cooled, the indoor unit to be heated, and the water tank to be cooled. If the primary target operating mode is cooling mode, then the first and third ports of the main three-way reversing valve are opened, the second and third ports of the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled are opened, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated are opened, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, enters the indoor unit to be cooled and the water tank to be cooled through the outdoor heat exchanger for heat exchange, and enters the indoor unit to be heated through the branch three-way reversing valve corresponding to the indoor unit to be heated for heat exchange. After heat exchange, it merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled and the water tank to be cooled for heat exchange. After heat exchange, it returns to the compressor through the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled, thus executing the cooling mode, the heating mode, and the chilled water mode. If the primary target operating mode is heating mode, then the second and third ports of the main three-way reversing valve are connected, the second and third ports of the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled are connected, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated are connected. This allows the refrigerant to enter the indoor unit to be heated through the branch three-way reversing valve for heat exchange, and after heat exchange, return to the compressor through the outdoor heat exchanger, and enter the indoor unit to be cooled and the water tank to be cooled through the control valves corresponding to the indoor unit to be cooled and the water tank to be cooled for heat exchange, and after heat exchange, return to the compressor through the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled, thus executing the cooling mode, the heating mode, and the chilled water mode.

[0031] The air conditioning control method provided in this application embodiment allows the air conditioner to simultaneously realize the combined functions of cooling, heating, and chilled water of the indoor unit to be cooled, the indoor unit to be heated, and the water tank to be chilled, by controlling the opening and closing of the control valves of each indoor heat exchange unit and controlling the port conduction of the main three-way reversing valve and the branch three-way reversing valve based on the main target operation mode, while ensuring the operation effect of the main target operation mode and the energy utilization efficiency of the air conditioner.

[0032] In an optional implementation, the target operating mode is a cooling mode, a hot water production mode, and a chilled water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the indoor unit to be cooled, the hot water tank to be produced, and the water tank to be cooled; close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be cooled, the hot water tank to be produced, and the water tank to be cooled. The system controls the first and third ports of the main three-way reversing valve to be open, the second and third ports of the corresponding three-way reversing valves of the indoor unit to be cooled and the water tank to be cooled to be open, and the first and third ports of the three-way reversing valve of the water tank to be cooled to be open, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, enters the indoor unit to be cooled and the water tank to be cooled through the outdoor heat exchanger for heat exchange, and enters the water tank to be cooled through the corresponding three-way reversing valve of the water tank to be cooled for heat exchange. After heat exchange, the refrigerant merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled and the water tank to be cooled for heat exchange. After heat exchange, the refrigerant returns to the compressor through the corresponding three-way reversing valve of the indoor unit to be cooled and the water tank to be cooled, thus executing the cooling mode, the hot water mode, and the chilled water mode.

[0033] The air conditioning control method provided in this application embodiment allows the air conditioner to simultaneously achieve the combined functions of cooling, hot water production, and chilled water production by controlling the opening and closing of the control valves of each indoor heat exchange unit, as well as controlling the conduction of the ports of the main three-way reversing valve and the branch three-way reversing valve.

[0034] In an optional implementation, the target operating mode is a heating mode, a hot water mode, and a cooling water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the indoor unit to be heated, the hot water tank to be heated, and the cool water tank to be cooled; close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be heated, the hot water tank to be heated, and the cool water tank to be cooled. The system controls the second and third ports of the main three-way reversing valve to be open, the second and third ports of the branch three-way reversing valve corresponding to the water tank to be cooled to be open, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated and the water tank to be heated to be opened, so that the refrigerant enters the indoor unit to be heated and the water tank to be heated through the branch three-way reversing valves of the indoor unit to be heated and the water tank to be heated for heat exchange. After heat exchange, the refrigerant returns to the compressor through the outdoor heat exchanger and enters the water tank to be cooled through the control valve corresponding to the water tank to be cooled for heat exchange. After heat exchange, the refrigerant returns to the compressor through the branch three-way reversing valve corresponding to the water tank to be cooled, thus executing the heating mode, the hot water mode, and the cooling water mode.

[0035] The air conditioning control method provided in this application allows the air conditioner to simultaneously achieve the combined functions of heating, hot water production, and cooling water production by controlling the opening and closing of the control valves of each indoor heat exchange unit and controlling the conduction of the ports of the main three-way reversing valve and the branch three-way reversing valve.

[0036] In an optional implementation, the target operating mode is a cooling mode, a heating mode, a chilled water mode, and a hot water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the indoor unit to be cooled, the indoor unit to be heated, the water tank to be cooled, and the water tank to be heated; close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be cooled, the indoor unit to be heated, the water tank to be cooled, and the water tank to be heated. If the primary target operating mode is cooling mode, then the first and third ports of the main three-way reversing valve are opened, the second and third ports of the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled are opened, and the first and third ports of the branch three-way reversing valves corresponding to the indoor unit to be heated and the water tank to be heated are opened. This allows the refrigerant to enter the outdoor heat exchanger through the main three-way reversing valve, and then enter the indoor unit to be cooled and the water tank to be cooled through the outdoor heat exchanger for heat exchange. It also enters the indoor unit to be heated and the water tank to be heated through the branch three-way reversing valves corresponding to the indoor unit to be heated and the water tank to be heated for heat exchange. After heat exchange, it merges with the refrigerant passing through the outdoor heat exchanger and enters the indoor unit to be cooled and the water tank to be cooled for heat exchange. Finally, it returns to the compressor through the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be heated, thus executing the cooling mode, the heating mode, the chilled water mode, and the hot water mode. If the primary target operating mode is heating mode, then the second and third ports of the main three-way reversing valve are connected, the second and third ports of the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled are connected, and the first and third ports of the branch three-way reversing valves corresponding to the indoor unit to be heated and the water tank to be heated are connected. This allows the refrigerant to enter the indoor unit to be heated and the water tank to be heated through the branch three-way reversing valve of the indoor unit to be heated for heat exchange. After heat exchange, the refrigerant returns to the compressor through the outdoor heat exchanger, and also enters the indoor unit to be cooled and the water tank to be cooled through the control valves corresponding to the indoor unit to be cooled and the water tank to be cooled for heat exchange. After heat exchange, the refrigerant returns to the compressor through the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled, thus executing the cooling mode, the heating mode, the chilled water mode, and the hot water mode.

[0037] The air conditioning control method provided in this application embodiment allows the air conditioner to control the opening and closing of the control valves of each indoor heat exchange unit, and to control the port conduction of the main three-way reversing valve and the branch three-way reversing valve based on the main target operation mode, so as to simultaneously realize the combined functions of cooling, heating, hot water production and chilled water production of the indoor unit to be cooled, the indoor unit to be heated, the hot water tank to be produced and the chilled water tank to be cooled, while ensuring the operation effect of the main target operation mode and the energy utilization efficiency of the air conditioner.

[0038] In an optional embodiment, the second ports of the main three-way reversing valve and each of the branch three-way reversing valves are connected to the compressor via a gas-liquid separator, and the method further includes: The second and third ports of the three-way reversing valves corresponding to the other indoor heat exchange units are connected.

[0039] The air conditioning control method provided in this application embodiment allows the air conditioner to simultaneously connect the second and third ports of the three-way reversing valves corresponding to other indoor heat exchange units that are not executing the target operating mode when the air conditioner is executing the target operating mode. This enables the refrigerant in the other indoor heat exchange units to be drawn back into the gas-liquid separator and then returned to the compressor, thus avoiding refrigerant accumulation in other indoor heat exchange units and improving the energy utilization efficiency of the air conditioner.

[0040] In an optional embodiment, the water tank is further equipped with a heating device, and the method further includes: If the target operating mode includes a hot water production mode, and the target water temperature in the operating command is greater than the preset maximum water temperature, then when the water temperature in the hot water tank reaches the maximum water temperature, the hot water production mode will be stopped, and the heating device in the hot water tank will be controlled to heat the water until the water temperature in the hot water tank reaches the target water temperature.

[0041] The air conditioning control method provided in this application embodiment can, when the target water temperature required by the user is greater than the maximum water temperature that the air conditioner can achieve through refrigerant heat exchange, use a heating device to assist in heating the water in the water tank so that the water temperature reaches the target water temperature, thereby meeting the user's water demand.

[0042] Secondly, this application provides an air conditioning control device applied to an air conditioner. The air conditioner includes multiple indoor heat exchange units, a main three-way reversing valve, and multiple branch three-way reversing valves, each branch three-way reversing valve corresponding to one indoor heat exchange unit. The compressor exhaust port is connected to the first port of the main three-way reversing valve and each branch three-way reversing valve, the compressor suction port is connected to the second port of the main three-way reversing valve and each branch three-way reversing valve, and the third port of the main three-way reversing valve is connected to an outdoor heat exchanger. The third port of each branch three-way reversing valve is connected to its corresponding indoor heat exchange unit, and each indoor heat exchange unit is also connected to the outdoor heat exchanger via a corresponding control valve. Each indoor heat exchange unit includes an indoor unit and a water tank. The device includes: A receiving module is used to receive operating instructions sent by a user; the operating instructions include a target operating mode, and the target operating mode is at least one of cooling mode, heating mode, hot water mode and chilled water mode, and when there are multiple target operating modes, each target operating mode operates simultaneously; The control module is used to control the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and to control the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so that the refrigerant can exchange heat through the indoor heat exchange unit corresponding to the target operating mode and execute the target operating mode.

[0043] The air conditioning control device provided in this application includes a main three-way reversing valve and multiple branch three-way reversing valves. Each branch three-way reversing valve corresponds to an indoor heat exchange unit. The compressor's exhaust port and intake port are connected to the first and second ports of the main three-way reversing valve and each branch three-way reversing valve, respectively. The third port of the main three-way reversing valve is connected to the outdoor heat exchanger, and the third port of each branch three-way reversing valve is connected to its corresponding indoor heat exchange unit. Simultaneously, each indoor heat exchange unit is also connected to the outdoor heat exchanger through its corresponding control valve. Based on this structure, the air conditioner can receive operating commands sent by the user. These commands include at least one target operating mode. When multiple target operating modes exist, the air conditioner needs to operate them simultaneously. Subsequently, the air conditioner can coordinate the reversing and opening / closing control of the main three-way reversing valve, each branch three-way reversing valve, and the control valves corresponding to each indoor heat exchange unit according to the target operating mode specified in the command. This guides the refrigerant to flow through the corresponding indoor heat exchange unit as needed to complete heat exchange, achieving the required functional combination. In this way, by setting a main three-way reversing valve and multiple branch three-way reversing valves in the air conditioner, the refrigerant flow direction can be flexibly configured, so that the air conditioner is no longer limited to single-function operation, but can simultaneously perform any combination of cooling, heating, hot water production, and chilled water production in the same period of time, thereby improving the functional combination diversity of the air conditioner and effectively responding to the diverse and scenario-based actual needs of users.

[0044] Thirdly, this application provides an air conditioner, which includes multiple indoor heat exchange units, a main three-way reversing valve, and multiple branch three-way reversing valves, each branch three-way reversing valve corresponding to one indoor heat exchange unit; the compressor exhaust port is connected to the first port of the main three-way reversing valve and each branch three-way reversing valve, the compressor suction port is connected to the second port of the main three-way reversing valve and each branch three-way reversing valve, and the third port of the main three-way reversing valve is connected to an outdoor heat exchanger; the third port of each branch three-way reversing valve is connected to the corresponding indoor heat exchange unit, and each indoor heat exchange unit is also connected to the outdoor heat exchanger through a corresponding control valve; the indoor heat exchange unit includes an indoor unit and a water tank; the air conditioner also includes a main controller, which executes a computer program to implement the air conditioning control method described in any of the foregoing embodiments.

[0045] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a main controller, implements the air conditioning control method described in any of the foregoing embodiments. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the structure of an air conditioner provided in an embodiment of this application; Figure 2A schematic flowchart of an air conditioning control method provided in an embodiment of this application; Figure 3 A schematic diagram of refrigerant flow when the target operating mode is cooling mode; Figure 4 A schematic diagram of refrigerant flow when the target operating mode is heating mode; Figure 5 A schematic diagram of refrigerant flow when the target operating mode is hot water production mode; Figure 6 A schematic diagram of the refrigerant flow direction when the target operating mode is chilled water mode; Figure 7 A schematic diagram of refrigerant flow when the target operating modes are cooling mode and hot water mode; Figure 8 A schematic diagram of refrigerant flow when the target operating modes are cooling mode and chilled water mode; Figure 9 A schematic diagram of refrigerant flow when the target operating modes are heating mode and hot water mode; Figure 10 A schematic diagram of refrigerant flow when the target operating modes are heating mode and cooling water mode; Figure 11 A schematic diagram of refrigerant flow when the target operating modes are cooling mode and heating mode, and the main target operating mode is cooling mode; Figure 12 A schematic diagram of refrigerant flow when the target operating modes are cooling mode and heating mode, and the main target operating mode is heating mode; Figure 13 A schematic diagram of refrigerant flow when the target operating modes are cooling water mode and hot water mode; Figure 14 A schematic diagram of refrigerant flow when the target operating modes are cooling mode, heating mode, and hot water mode, and the main target operating mode is cooling mode; Figure 15 A schematic diagram of refrigerant flow when the target operating modes are cooling mode, heating mode, and hot water mode, and the main target operating mode is heating mode; Figure 16 A schematic diagram of refrigerant flow when the target operating modes are cooling mode, heating mode, and chilled water mode, and the main target operating mode is cooling mode; Figure 17 A schematic diagram of refrigerant flow when the target operating modes are cooling mode, heating mode, and chilled water mode, and the main target operating mode is heating mode; Figure 18 A schematic diagram of refrigerant flow when the target operating modes are cooling mode, hot water mode, and chilled water mode; Figure 19A schematic diagram of refrigerant flow when the target operating modes are heating mode, hot water mode, and cooling water mode, and the main target operating mode is heating mode; Figure 20 A schematic diagram of refrigerant flow when the target operating modes are cooling mode, heating mode, chilled water mode, and hot water mode, and the main target operating mode is cooling mode; Figure 21 A schematic diagram of refrigerant flow when the target operating modes are cooling mode, heating mode, chilled water mode, and hot water mode, and the main target operating mode is heating mode; Figure 22 This is a block diagram of an air conditioning control device provided in an embodiment of this application.

[0047] Explanation of reference numerals in the attached figures: C1 - Main three-way reversing valve; C2~C5 - Branch three-way reversing valves; G1~G2 - Indoor unit; H1~H2 - Water tank; A - Compressor; D - Outdoor heat exchanger; B - Oil separator; F - Refrigerant heat dissipation device; E1 - Main control valve; J - Gas-liquid separator; E2~E5 - Control valve; I1~I2 - Heating device. Detailed Implementation

[0048] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, specific embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0049] First, taking an indoor heat exchange unit comprising two indoor units and two water tanks as an example, the air conditioner provided in the embodiments of this application will be described exemplarily.

[0050] Specifically, Figure 1 For a structural schematic diagram of an air conditioner provided in an embodiment of this application, please refer to [link / reference]. Figure 1 The air conditioner is equipped with multiple indoor heat exchange units, a main three-way reversing valve C1, and multiple branch three-way reversing valves C2~C5, with each branch three-way reversing valve corresponding to one indoor heat exchange unit. It can be understood that the indoor heat exchange unit may include indoor units G1~G2 and water tanks H1~H2.

[0051] The air conditioner also includes a compressor A and an outdoor heat exchanger D. The exhaust port of the compressor A is connected to the first port of the main three-way reversing valve C1 and each of the branch three-way reversing valves C2 to C5. The suction port of the compressor A is connected to the second port of the main three-way reversing valve C1 and each of the branch three-way reversing valves C2 to C5. The third port of the main three-way reversing valve C1 is also connected to the outdoor heat exchanger D. The third ports of each of the branch three-way reversing valves C2 to C5 are also connected to the corresponding indoor heat exchange unit.

[0052] In addition, the air conditioner also includes an oil separator B, a refrigerant heat dissipation device F, a main control valve E1, and a gas-liquid separator J.

[0053] In this embodiment, the second ports of the main three-way reversing valve C1 and each of the branch three-way reversing valves C2~C5 can be connected to the suction port of compressor A through the gas-liquid separator J and the oil separator B. Furthermore, the outdoor heat exchanger D can be connected to the corresponding refrigerant branch of each outdoor heat exchanger through the main control valve E1 and the refrigerant cooling device F. Simultaneously, for ease of control, each indoor heat exchange unit is also connected to the outdoor heat exchanger through corresponding control valves E2~E5. For clarity, this embodiment divides the air conditioner into four refrigerant channels; please refer to [further details omitted]. Figure 1 These are respectively the compressor channel ①, the outdoor heat exchanger channel ②, the indoor unit channel ③, and the water tank channel ④.

[0054] The compressor channel ① includes compressor A, gas-liquid separator J and oil separator B. The exhaust port of compressor A is connected to the first port of the main three-way reversing valve C1 and each of the branch three-way reversing valves C2 to C5. The intake port of compressor A is connected to the second port of the main three-way reversing valve C1 and each of the branch three-way reversing valves C2 to C5 after passing through oil separator B and gas-liquid separator J.

[0055] The outdoor heat exchanger pipe ② includes an outdoor heat exchanger D, a main control valve E1, and a refrigerant heat dissipation device F. One end of the outdoor heat exchanger D is connected to the third port of the main three-way reversing valve C1, and the other end is connected to the indoor unit channel ③ and the water tank channel ④ after passing through the main control valve E1 and the refrigerant heat dissipation device F in sequence.

[0056] Indoor unit channel ③ includes indoor units G1~G2 and corresponding control valves E2~E3. One end of indoor units G1~G2 is connected to the third port of the corresponding three-way reversing valves C4~C5, and the other end is connected to the outdoor heat exchanger pipe ② via control valves E2~E3.

[0057] The water tank channel ④ includes water tanks H1~H2 and corresponding control valves E4~E5. The water tank is equipped with a refrigerant inlet, a refrigerant outlet, a water inlet, and a water outlet. The refrigerant inlet is connected to the third port of the corresponding three-way reversing valve C2~C3, and the refrigerant outlet is connected to the outdoor heat exchanger pipe ② after passing through control valves E4~E5.

[0058] Optionally, the main control valve E1 and control valves E2 to E5 mentioned above can all be electronic expansion valves.

[0059] The following is based on the above. Figure 1 The air conditioner is the main actuator in this application. The air conditioning control method provided in this application embodiment is described by way of example in conjunction with the flowchart.

[0060] Specifically, Figure 2 Please refer to the flowchart of an air conditioning control method provided in this application embodiment. Figure 2 The method includes: Step S20: Receive the running command sent by the user.

[0061] The operation command includes a target operation mode, and the target operation mode is at least one of cooling mode, heating mode, hot water mode and chilled water mode. When there are multiple target operation modes, each target operation mode operates simultaneously.

[0062] Understandably, the target operating mode can be selected from at least one of the four basic operating modes: cooling mode, heating mode, hot water mode, and chilled water mode. When two or more target operating modes are selected, the air conditioner can make each target operating mode operate synchronously, rather than switching or alternating between them.

[0063] In practical applications, the air conditioner can simultaneously achieve up to fifteen different composite operating modes according to the combination specified by the operating command. These include: individual cooling mode, heating mode, hot water mode, and chilled water mode; combinations of two modes: cooling + hot water mode, heating + hot water mode, cooling + chilled water mode, heating + chilled water mode, cooling + heating mode, and hot water + chilled water mode; combinations of three modes: cooling + heating + hot water mode, cooling + heating + chilled water mode, cooling + hot water + chilled water mode, and heating + hot water + chilled water mode; and a cooling + heating + hot water + chilled water mode where all four basic modes operate simultaneously.

[0064] Step S21: Control the main three-way reversing valve and each branch three-way reversing valve according to the target operating mode, and control the opening and closing of the control valves corresponding to each indoor heat exchange unit, so that the refrigerant can exchange heat through the indoor heat exchange unit corresponding to the target operating mode and execute the target operating mode.

[0065] In this embodiment, the main three-way reversing valve can be used to coordinate the main flow direction of refrigerant between the compressor and the outdoor heat exchanger. Each branch three-way reversing valve corresponds to an indoor heat exchange unit, independently controlling the path direction and connection relationship of the unit entering or exiting the refrigerant circulation. The control valve further assists in realizing the physical on / off control of specific indoor heat exchange units (such as indoor units or water tanks).

[0066] Based on this, according to the target operating mode set by the user, the air conditioner can control the reversing of the main three-way reversing valve and each branch three-way reversing valve, as well as control the opening and closing of the control valves corresponding to each indoor heat exchange unit. This allows for free switching of refrigerant flow and direction according to different needs, enabling the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode. Thus, under a single system architecture, it supports flexible switching of 15 operating modes, including cooling, heating, hot water production, chilled water, and combinations of two, three, and even four modes.

[0067] In this way, users can flexibly propose multi-dimensional needs according to actual usage scenarios. For example, in summer office spaces, it is necessary to cool the conference room, supply hot water to the tea room, and provide chilled water to the computer room. The air conditioner can respond and stably perform these three tasks simultaneously within the same time period. This avoids the problems of large space occupation, low energy efficiency, complex installation, and difficult operation and maintenance caused by traditional systems that have to be configured with multiple independent devices due to their single function. It improves the functional combination diversity of air conditioners and meets the diverse needs of users.

[0068] The air conditioning control method provided in this application includes an air conditioner comprising a main three-way reversing valve and multiple branch three-way reversing valves. Each branch three-way reversing valve corresponds to an indoor heat exchange unit. The compressor's exhaust port and intake port are connected to the first and second ports of the main three-way reversing valve and each branch three-way reversing valve, respectively. The third port of the main three-way reversing valve is connected to the outdoor heat exchanger, and the third ports of each branch three-way reversing valve are connected to their respective indoor heat exchange units. Simultaneously, each indoor heat exchange unit is also connected to the outdoor heat exchanger through its corresponding control valve. Based on this structure, the air conditioner can receive operating instructions sent by the user. These instructions include at least one target operating mode. When multiple target operating modes exist, the air conditioner needs to operate them simultaneously. Subsequently, the air conditioner can coordinate the reversing and opening / closing control of the main three-way reversing valve, each branch three-way reversing valve, and the control valves corresponding to each indoor heat exchange unit according to the target operating mode specified in the instruction. This guides the refrigerant to flow as needed through the corresponding indoor heat exchange unit to complete heat exchange, achieving the required functional combination. In this way, by setting a main three-way reversing valve and multiple branch three-way reversing valves in the air conditioner, the refrigerant flow direction can be flexibly configured, so that the air conditioner is no longer limited to single-function operation, but can simultaneously perform any combination of cooling, heating, hot water production, and chilled water production in the same period of time, thereby improving the functional combination diversity of the air conditioner and effectively responding to the diverse and scenario-based actual needs of users.

[0069] Optionally, considering that in hot water mode, the user may desire a hot water temperature higher than the maximum water temperature achievable by the air conditioner through refrigerant heat exchange, please refer to [link to relevant documentation]. Figure 1Heating devices I1 to I2 can also be installed in water tanks H1 to H2 to assist in heating the water in the tanks.

[0070] In this embodiment, if the target operating mode includes a hot water production mode, and the target water temperature in the operating command is greater than the preset maximum water temperature, the air conditioner can stop executing the hot water production mode when the water temperature in the hot water tank reaches the maximum water temperature, and control the heating device in the hot water tank to heat the water until the water temperature in the hot water tank reaches the target water temperature.

[0071] In this embodiment, the target water temperature refers to the water temperature desired by the user, and the maximum water temperature refers to the maximum water temperature that the air conditioner can achieve through refrigerant heat exchange. The heating device can be an electric heating device. Please continue reading. Figure 1 In practical applications, when the air conditioner is in hot water production mode, the refrigerant can flow through the refrigerant channel ④ corresponding to the hot water tank (e.g., H1) to transfer heat to the water in the tank H1, causing its temperature to gradually rise. If the target water temperature is greater than the preset maximum water temperature, the air conditioner can automatically close the control valve E4 corresponding to the tank H1 when the refrigerant heats the water in the tank H1 to the preset maximum water temperature, and simultaneously switch the three-way reversing valve C3 corresponding to the tank H1 to the state where the second and third ports are connected, so as to block the refrigerant from continuing to flow into the refrigerant channel of the tank H1.

[0072] At this time, the air conditioner can control the heating device I1 of water tank H1 to start heating and continuously raise the temperature of the water in water tank H1 until the actual water temperature reaches the target water temperature.

[0073] Next, for each target operating mode, we will provide a possible method for controlling the switching of the main three-way reversing valve and each branch three-way reversing valve, as well as the opening and closing of the control valves corresponding to each indoor heat exchange unit, so that the refrigerant can exchange heat through the indoor heat exchange unit corresponding to the target operating mode and execute the target operating mode.

[0074] In one possible implementation, the target operating mode can be a single mode.

[0075] When the target operating mode is only cooling mode, the air conditioner can open the control valve corresponding to the indoor unit to be cooled and close the control valves corresponding to other indoor heat exchange units besides the indoor unit to be cooled; control the first and third ports of the main three-way reversing valve to be open, and the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled to be open, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, and enters the indoor unit to be cooled through the outdoor heat exchanger for heat exchange. After heat exchange, it returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing the cooling mode.

[0076] In this embodiment, the operating command refers to the cooling command, and the indoor unit to be cooled refers to the indoor unit targeted by the cooling command.

[0077] Taking indoor units G1~G2 as examples, where all are indoor units awaiting cooling, Figure 3 For a diagram illustrating the refrigerant flow when the target operating mode is cooling mode, please refer to [link / reference]. Figure 3 When the user only needs cooling, the air conditioner can open the control valves E2-E3 corresponding to indoor units G1-G2, close the control valves E4-E5 corresponding to all water tanks, and simultaneously open the first and third ports of the main three-way reversing valve C1, as well as the second and third ports of the branch three-way reversing valves C4-C5 corresponding to indoor units G1-G2. At this time, the outdoor heat exchanger D acts as the condenser, and the indoor heat exchangers in indoor units G1-G2 act as the evaporators.

[0078] At this time, the high-pressure vapor refrigerant discharged from compressor A can enter the outdoor heat exchanger D through the main three-way reversing valve C1. In the outdoor heat exchanger D, the refrigerant can be condensed into low-temperature, high-pressure liquid refrigerant. Then, it passes through the refrigerant heat dissipation device F to dissipate heat to the electronic control board, and then enters the indoor unit G1~G2 through the control valves E2~E3. In the indoor unit G1~G2, the refrigerant is evaporated into a high-temperature, low-pressure gaseous state, and then flows into the gas-liquid separator J through the second and third ports of the three-way reversing valves C4~C5, and finally returns to compressor A to complete the refrigeration cycle.

[0079] During this process, since the control valves corresponding to other indoor heat exchange units are in the closed state, the refrigerant will not enter other indoor heat exchange units for heat exchange, thereby avoiding ineffective distribution of refrigerant and ensuring full utilization of refrigerant in the refrigeration cycle.

[0080] When the target operating mode is only heating mode, the air conditioner can open the control valve corresponding to the indoor unit to be heated, and close the control valves corresponding to other indoor heat exchange units except the indoor unit to be heated; control the second and third ports of the main three-way reversing valve to be connected, and the first and third ports of the branch three-way reversing valve corresponding to the indoor unit to be heated to be connected, so that the refrigerant enters the indoor unit to be heated through the branch three-way reversing valve corresponding to the indoor unit to be heated for heat exchange, and after heat exchange, returns to the compressor through the outdoor heat exchanger to execute the heating mode.

[0081] In this embodiment, the operating command refers to the heating command, and the indoor unit to be cooled refers to the indoor unit targeted by the heating command.

[0082] In this embodiment, to prevent refrigerant from flowing into other indoor heat exchange units and improve refrigerant utilization, the air conditioner can also control the second and third ports of the three-way reversing valves corresponding to other indoor heat exchange units to be connected. Taking indoor units G1~G2 as examples where all are indoor units awaiting heating... Figure 4For a diagram illustrating the refrigerant flow when the target operating mode is heating, please refer to [link / reference]. Figure 4 When the user only needs heating, the air conditioner can open the control valves E2-E3 corresponding to indoor units G1-G2, close the control valves E4-E5 corresponding to all water tanks, and simultaneously control the second and third ports of the main three-way reversing valve C1 to be open, and the first and third ports of the branch three-way reversing valves C4-C5 corresponding to indoor units G1-G2 to be open.

[0083] In addition, it is necessary to control the second and third ports of the three-way reversing valves C2 to C3 corresponding to water tanks H1~H2 to be open. At this time, the outdoor heat exchanger is the evaporator, and the indoor heat exchanger in the indoor unit is the condenser.

[0084] In this case, the high-pressure vapor refrigerant discharged from compressor A can enter indoor unit G1~G2 through the three-way reversing valves C4~C5. The refrigerant condenses into low-temperature, high-pressure liquid refrigerant in the indoor unit, and then dissipates heat to the electronic control board through the refrigerant heat dissipation device F. After that, it enters the outdoor heat exchanger D through the main control valve E1. The refrigerant evaporates into high-temperature, low-pressure gaseous refrigerant in the outdoor heat exchanger D, and then flows into the gas-liquid separator J through the main three-way reversing valve C1, and finally returns to compressor A to complete the heating cycle.

[0085] When the target operating mode is only hot water production mode, the air conditioner can open the control valve corresponding to the hot water tank to be produced and close the control valves corresponding to other indoor heat exchange units except for the hot water tank to be produced; control the second and third ports of the main three-way reversing valve to be connected, and the first and third ports of the branch three-way reversing valve corresponding to the hot water tank to be produced to be connected, so that the refrigerant enters the hot water tank to be produced through the branch three-way reversing valve corresponding to the hot water tank to be produced for heat exchange, and after heat exchange, returns to the compressor through the outdoor heat exchanger to execute the hot water production mode.

[0086] In this embodiment, the running command refers to the hot water production command, and the hot water tank to be produced refers to the water tank targeted by the hot water production command.

[0087] In this embodiment, to prevent refrigerant from flowing into other indoor heat exchange units and to improve refrigerant utilization, the air conditioner can also control the second and third ports of the three-way reversing valves corresponding to other indoor heat exchange units to be connected.

[0088] Taking water tanks H1~H2 as examples where hot water is to be produced, Figure 5 For a diagram illustrating the refrigerant flow when the target operating mode is hot water production, please refer to [link / reference]. Figure 5When the user only needs hot water, the air conditioner can open the control valves E4 to E5 corresponding to water tanks H1 to H2, close the control valves E2 to E3 corresponding to all indoor units G1 to G2, and simultaneously control the second and third ports of the main three-way reversing valve C1 to be open, and the first and third ports of the branch three-way reversing valves C2 to C3 corresponding to water tanks H1 to H2 to be open.

[0089] In addition, it is necessary to control the second and third ports of the three-way reversing valves C4 to C5 corresponding to indoor units G1~G2 to be open. At this time, the outdoor heat exchanger is the evaporator and the water tank is the condenser.

[0090] In this case, the high-pressure steam refrigerant discharged from compressor A can enter water tanks H1 to H2 through the three-way reversing valves C2 to C3. The refrigerant condenses into low-temperature, high-pressure liquid refrigerant in the water tanks. Then, it can dissipate heat from the electronic control board through the refrigerant heat dissipation device F, and then enter the outdoor heat exchanger D through the main control valve E1. The refrigerant evaporates into high-temperature, low-pressure gaseous refrigerant in the outdoor heat exchanger D, and then flows into the gas-liquid separator J through the main three-way reversing valve C1, and finally returns to compressor A to complete the hot water production cycle.

[0091] When the target operating mode is only chilled water mode, the air conditioner can open the control valve corresponding to the water tank to be chilled and close the control valves corresponding to the other indoor heat exchange units besides the water tank to be chilled; control the first and third ports of the main three-way reversing valve to be open, and the second and third ports of the branch three-way reversing valve corresponding to the water tank to be chilled to be open, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, and enters the water tank to be chilled through the outdoor heat exchanger for heat exchange. After heat exchange, it returns to the compressor through the branch three-way reversing valve corresponding to the water tank to be chilled, thus executing the chilled water mode.

[0092] In this embodiment, the running command refers to the cooling water command, and the water tank to be cooled refers to the water tank targeted by the cooling water command.

[0093] Taking water tanks H1~H2 as examples where all are water tanks to be cooled, Figure 6 For a schematic diagram of the refrigerant flow when the target operating mode is chilled water mode, please refer to [link / reference]. Figure 6 When the user only needs cooling, the air conditioner can open control valves E4-E5 corresponding to water tanks H1-H2 and close control valves E2-E3 corresponding to all indoor units G1-G2. Simultaneously, it controls the first and third ports of the main three-way reversing valve C1 and the second and third ports of the branch three-way reversing valves C2-C3 corresponding to water tanks H1-H2 to be open. At this time, the outdoor heat exchanger D acts as the condenser, and the water tanks H1-H2 act as the evaporator.

[0094] At this time, the high-pressure vapor refrigerant discharged from compressor A can enter the outdoor heat exchanger D through the main three-way reversing valve C1. In the outdoor heat exchanger D, the refrigerant can be condensed into low-temperature high-pressure liquid refrigerant. Then, it passes through the refrigerant heat dissipation device F to dissipate heat to the electronic control board, and then enters the water tanks H1 to H2 through the control valves E4 to E5. In the water tanks H1 to H2, the refrigerant is evaporated into a high-temperature low-pressure gaseous state, and then flows into the gas-liquid separator J through the branch three-way reversing valves C2 to C3, and finally returns to compressor A to complete the refrigerant water cycle.

[0095] During this process, since the control valves corresponding to other indoor heat exchange units are in the closed state, the refrigerant will not enter other indoor heat exchange units for heat exchange, thereby avoiding ineffective distribution of refrigerant and ensuring full utilization of refrigerant in the cooling water circulation.

[0096] In another possible implementation, the target operating mode can be a combination of any two operating modes.

[0097] When the target operating mode is cooling mode and hot water mode, the air conditioner can open the control valves corresponding to the indoor unit to be cooled and the hot water tank to be heated, and close the control valves corresponding to other indoor heat exchange units except for the indoor unit to be cooled and the hot water tank to be heated; control the first and third ports of the main three-way reversing valve to be open, the first and third ports of the branch three-way reversing valve corresponding to the hot water tank to be heated, and the second and third ports of the indoor unit to be cooled to be open, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, enters the indoor unit to be cooled through the outdoor heat exchanger for heat exchange, and enters the hot water tank to be heated through the branch three-way reversing valve corresponding to the hot water tank to be heated for heat exchange. After heat exchange, it merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled for heat exchange. After heat exchange, it returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing the cooling mode and hot water mode.

[0098] Taking water tanks H1~H2 as hot water tanks to be produced and indoor units G1~G2 as indoor units to be cooled as an example, Figure 7 For a diagram illustrating the refrigerant flow when the target operating modes are cooling and hot water, please refer to [link / reference]. Figure 7 When the air conditioner opens control valves E2-E5, it simultaneously controls the first and third ports of the main three-way reversing valve C1 to open, the first and third ports of the branch three-way reversing valves C2-C3 corresponding to water tanks H1-H2 to open, and the second and third ports of the branch three-way reversing valves C4-C5 corresponding to indoor units G1-G2 to open. At this time, the outdoor heat exchanger D and water tanks H1-H2 act as condensers, and the indoor heat exchangers of indoor units G1-G2 act as evaporators.

[0099] In this case, the high-pressure vapor refrigerant discharged from compressor A can be divided into two paths. One path enters the outdoor heat exchanger D through the main three-way reversing valve C1, where it condenses into a low-temperature, high-pressure liquid refrigerant and then dissipates heat to the control board via the refrigerant heat dissipation device F. The other path enters the refrigerant channel of water tanks H1-H2 through three-way reversing valves C2-C3, heating the water in water tanks H1-H2 to a specified temperature. Then, it merges with the refrigerant in the outdoor heat exchanger pipe ② through the control valves E4-E5 corresponding to water tanks H1-H2, and then enters indoor units G1-G2 through the control valves E2-E3 corresponding to indoor units G1-G2. The refrigerant evaporates into a high-temperature, low-pressure gaseous refrigerant in indoor units G1-G2, and then flows into the gas-liquid separator J through three-way reversing valves C4-C5, finally returning to compressor A to complete the refrigeration cycle and the hot water cycle.

[0100] It should be understood that when the first and third ports of the main three-way reversing valve are connected, the refrigerant condenses and releases heat through the outdoor heat exchanger. Simultaneously, the first and third ports of the corresponding three-way reversing valve for the hot water tank are connected, allowing the refrigerant to flow directly into the tank for condensation and heating. During this process, the two refrigerant streams converge before entering the indoor unit to be cooled, jointly participating in evaporation and heat absorption, thus avoiding unnecessary heat loss. It can be understood that this embodiment, through coordinated valve control, allows the air conditioner to transfer some of the condensation heat that would otherwise be discharged outdoors to the hot water tank for utilization when simultaneously executing cooling and hot water production modes. In this way, cooling needs are met while the previously wasted condensation heat is used for hot water production, significantly improving system energy efficiency and reducing environmental heat load.

[0101] When the target operating mode is cooling mode or chilled water mode, the air conditioner can open the control valves corresponding to the water tank to be cooled and the indoor unit to be cooled, and close the control valves corresponding to other indoor heat exchange units except for the water tank to be cooled and the indoor unit to be cooled; control the first and third ports of the main three-way reversing valve to be open, and the second and third ports of the indoor unit to be cooled and the water tank to be cooled to be open, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, and enters the water tank to be cooled and the indoor unit to be cooled through the outdoor heat exchanger for heat exchange. After heat exchange, it returns to the compressor through the corresponding three-way reversing valves of the indoor unit to be cooled and the water tank to be cooled, thus executing cooling mode and chilled water mode.

[0102] Taking water tanks H1~H2 as water tanks to be cooled and indoor units G1~G2 as indoor units to be cooled as an example, Figure 8 For a diagram illustrating the refrigerant flow when the target operating modes are cooling mode and chilled water mode, please refer to [link / reference]. Figure 8 .

[0103] The air conditioner can open control valves E2~E5, simultaneously controlling the first and third ports of the main three-way reversing valve C1 to be open, and the second and third ports of the branch three-way reversing valves C2~C5 to be open. At this time, the outdoor heat exchanger D is the condenser, and the indoor heat exchangers of indoor units G1~G2 and water tanks H1~H2 are the evaporators.

[0104] In this case, the high-pressure vapor refrigerant discharged from compressor A can enter the outdoor heat exchanger D through the main three-way reversing valve C1. After the refrigerant condenses into low-temperature, high-pressure liquid refrigerant in the outdoor heat exchanger D, it passes through the refrigerant heat dissipation device F to dissipate heat to the electronic control board. Then, it enters the indoor units G1-G2 and water tanks H1-H2 through control valves E2-E5. The refrigerant evaporates into high-temperature, low-pressure gaseous refrigerant in the indoor units G1-G2 and water tanks H1-H2. Then, it flows into the gas-liquid separator J through the three-way reversing valves C2-C5, and finally returns to compressor A, completing the refrigeration cycle and the refrigerant water cycle.

[0105] When the target operating mode is heating mode or hot water mode, the air conditioner can open the control valves corresponding to the hot water tank and the indoor unit to be heated, and close the control valves corresponding to other indoor heat exchange units except for the hot water tank and the indoor unit to be heated; control the second and third ports of the main three-way reversing valve to be connected, and the first and third ports of the branch three-way reversing valves corresponding to the hot water tank and the indoor unit to be heated to be connected, so that the refrigerant enters the hot water tank and the indoor unit to be heated through the branch three-way reversing valves corresponding to the hot water tank and the indoor unit to be heated for heat exchange, and returns to the compressor through the outdoor heat exchanger after heat exchange, thus executing the heating mode and hot water mode.

[0106] Taking water tanks H1~H2 as hot water tanks waiting to be produced and indoor units G1~G2 as indoor units waiting to produce heat as an example, Figure 9 For a diagram illustrating the refrigerant flow when the target operating modes are heating and hot water, please refer to [link / reference]. Figure 9 .

[0107] The air conditioner can open control valves E2~E5, simultaneously controlling the second and third ports of the main three-way reversing valve C1 to be open, and the first and third ports of the branch three-way reversing valves C2~C5 to be open. At this time, the outdoor heat exchanger D is the evaporator, and the indoor heat exchangers G1~G2 and water tanks H1~H2 are the condensers.

[0108] In this configuration, the high-pressure vapor refrigerant discharged from compressor A can enter indoor units G1-G2 and water tanks H1-H2 via three-way reversing valves C2-C5. The refrigerant condenses into a low-temperature, high-pressure liquid state in indoor units G1-G2 and water tanks H1-H2, and then enters the outdoor heat exchanger pipe ② via control valves E2-E5. It then dissipates heat from the electronic control board via the refrigerant cooling device F, and finally enters the outdoor heat exchanger D via the main control valve E1. In the outdoor heat exchanger D, the refrigerant evaporates into a high-temperature, low-pressure gaseous refrigerant, which then flows into the gas-liquid separator J via three-way reversing valve C1, and finally returns to compressor A, completing the heating and hot water cycles.

[0109] When the target operating mode is heating mode or cooling water mode, the air conditioner can open the control valves corresponding to the indoor unit to be heated and the water tank to be cooled, and close the control valves corresponding to the other indoor heat exchange units besides the indoor unit to be heated and the water tank to be cooled; control the second and third ports of the main three-way reversing valve to be connected, the first and third ports of the branch three-way reversing valve corresponding to the indoor unit to be heated to be connected, and the second and third ports of the branch three-way reversing valve corresponding to the water tank to be cooled to be connected, so that the refrigerant enters the indoor unit to be heated through the branch three-way reversing valve corresponding to the indoor unit to be heated for heat exchange, and after heat exchange, returns to the compressor through the outdoor heat exchanger, and enters the water tank to be cooled through the control valve corresponding to the water tank to be cooled for heat exchange, and after heat exchange, returns to the compressor through the branch three-way reversing valve corresponding to the water tank to be cooled, thus executing heating mode and cooling water mode.

[0110] Taking water tanks H1~H2 as examples where all are water tanks awaiting cooling and indoor units G1~G2 as indoor units awaiting heating, Figure 10 For a diagram illustrating the refrigerant flow when the target operating modes are heating mode and chilled water mode, please refer to [link / reference]. Figure 10 .

[0111] The air conditioner can open control valves E2~E5, simultaneously controlling the second and third ports of the main three-way reversing valve C1 to open, the first and third ports of the branch three-way reversing valves C4~C5 corresponding to indoor units G1~G2 to open, and the second and third ports of the branch three-way reversing valves C2~C3 corresponding to water tanks H1~H2 to open. At this time, the outdoor heat exchanger D and water tanks H1~H2 are evaporators, and the indoor heat exchangers of indoor units G1~G2 are condensers.

[0112] In this situation, the high-pressure vapor refrigerant discharged from compressor A can enter indoor units G1-G2 through the three-way reversing valves C4-C5. The refrigerant condenses into low-temperature, high-pressure liquid refrigerant in indoor units G1-G2, and then splits into two paths. One path passes through the refrigerant heat dissipation device F to dissipate heat from the electronic control board, and then passes through the main control valve E1 to enter the outdoor heat exchanger D. In the outdoor heat exchanger D, it evaporates into high-temperature, low-pressure gaseous refrigerant, and then flows through the main three-way reversing valve C1 into the gas-liquid separator J, and finally returns to compressor A, completing the heating cycle. The other path passes through the control valves E4-E5 corresponding to water tanks H1-H2 to enter water tanks H1-H2, and then flows through the three-way reversing valves C2-C3 into the gas-liquid separator J, and finally returns to compressor A, completing the refrigerant water cycle.

[0113] It should be understood that when the second and third ports of the main three-way reversing valve are open, the refrigerant returns to the compressor after condensing and releasing heat in the indoor unit being heated. Simultaneously, the second and third ports of the corresponding three-way reversing valve in the chilled water tank are open, and its control valve opens, allowing another path of refrigerant to enter the tank for further heat absorption. During this process, some of the condensation heat that would otherwise be discharged outdoors can be transferred to the chilled water tank for utilization. In this way, heating demand is met while the previously wasted condensation heat is used for chilled water, significantly improving system energy efficiency and reducing environmental heat load.

[0114] When the target operating mode is cooling mode and heating mode, the air conditioner can first open the control valves corresponding to the indoor unit to be cooled and the indoor unit to be heated, and close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange unit except for the indoor unit to be cooled and the indoor unit to be heated. Then, based on the main target operating mode, the conduction status of each port of the main three-way reversing valve and the branch three-way reversing valve is determined.

[0115] If the primary target operating mode is cooling mode, the air conditioner can control the first and third ports of the main three-way reversing valve to be open, the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled to be open, and the first and third ports of the branch three-way reversing valve corresponding to the indoor unit to be heated to be open. This allows the refrigerant to enter the outdoor heat exchanger through the main three-way reversing valve, and then enter the indoor unit to be cooled for heat exchange through the outdoor heat exchanger, and enter the indoor unit to be heated for heat exchange through the branch three-way reversing valve corresponding to the indoor unit to be heated. After heat exchange, the refrigerant merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled for heat exchange. After heat exchange, the refrigerant returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing cooling mode and heating mode.

[0116] If the primary target operating mode is heating mode, the air conditioner can control the second and third ports of the main three-way reversing valve to be open, control the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled to be open, and control the first and third ports of the branch three-way reversing valve of the indoor unit to be heated to be open. This allows the refrigerant to enter the indoor unit to be heated through the branch three-way reversing valve for heat exchange, and after heat exchange, return to the compressor through the outdoor heat exchanger, and enter the indoor unit to be cooled through the control valve corresponding to the indoor unit to be cooled for heat exchange, and after heat exchange, return to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing cooling mode and heating mode.

[0117] Taking indoor unit G1 as the unit to be cooled and G2 as the unit to be heated as an example, Figure 11 For a diagram illustrating the refrigerant flow when the target operating modes are cooling and heating, and the primary target operating mode is cooling, please refer to [link / reference]. Figure 11 .

[0118] The air conditioner can open control valves E2~E3 and close control valves E4~E5 corresponding to all water tanks H1~H2. Simultaneously, it controls the first and third ports of the main three-way reversing valve C1 to open, the second and third ports of the branch three-way reversing valve C5 to open, and the first and third ports of the branch three-way reversing valve C4 to open. At this time, the outdoor heat exchanger D and the indoor heat exchanger of indoor unit G2 act as condensers, while the indoor heat exchanger of indoor unit G1 acts as an evaporator.

[0119] In this case, the high-pressure vapor refrigerant discharged from compressor A can be divided into two paths. One path enters the outdoor heat exchanger D through the main three-way reversing valve C1. The refrigerant condenses into a low-temperature, high-pressure liquid refrigerant in the outdoor heat exchanger D and then dissipates heat to the electronic control board through the refrigerant heat dissipation device F. The other path enters the indoor unit G2 through the branch three-way reversing valve C4 and condenses into a low-temperature, high-pressure liquid refrigerant. Then, it merges with the refrigerant in the outdoor heat exchanger pipe ② through the branch control valve E3, and then enters the indoor unit G1 through the branch control valve E2. The refrigerant evaporates into a high-temperature, low-pressure gaseous refrigerant in the indoor unit G1, and then flows into the gas-liquid separator J through the branch three-way reversing valve C5. Finally, it returns to compressor A, completing the refrigeration cycle and the heating cycle.

[0120] It should be understood that when the primary operating mode is cooling mode, the first and third ports of the main three-way reversing valve are open, allowing the refrigerant to condense and release heat through the outdoor heat exchanger. Simultaneously, the first and third ports of the corresponding three-way reversing valve for the indoor unit to be heated are open, allowing the refrigerant to flow directly into that indoor unit for condensation and heating. During this process, the two refrigerant streams converge before entering the indoor unit to be cooled, jointly participating in evaporation and heat absorption, thus avoiding unnecessary heat loss. It can be understood that this embodiment, through coordinated valve control, allows the air conditioner to transfer some of the condensation heat that would otherwise be discharged outdoors to the indoor unit to be heated for utilization when simultaneously executing cooling and heating modes. In this way, cooling needs are met while utilizing the previously wasted condensation heat for heating, significantly improving system energy efficiency and reducing environmental heat load.

[0121] Continuing with the example of indoor unit G1 being the unit to be cooled and G2 being the unit to be heated, Figure 12 For a diagram illustrating the refrigerant flow when the target operating modes are cooling and heating, and the primary target operating mode is heating, please refer to [link / reference]. Figure 12 .

[0122] The air conditioner can open control valves E2~E3 and close control valves E4~E5 corresponding to all water tanks H1~H2. Simultaneously, it controls the second and third ports of the main three-way reversing valve C1, the second and third ports of the branch three-way reversing valve C5, and the first and third ports of the branch three-way reversing valve C4 to be open. At this time, the outdoor heat exchanger D and the indoor heat exchanger of indoor unit G1 act as evaporators, while the indoor heat exchanger of indoor unit G2 acts as a condenser.

[0123] In this situation, the high-pressure vapor refrigerant discharged from compressor A can enter indoor unit G2 through three-way reversing valve C4. The refrigerant condenses into low-temperature, high-pressure liquid refrigerant in indoor unit G2 and then splits into two paths: one path passes through refrigerant heat dissipation device F to dissipate heat from the electronic control board, and then passes through main control valve E1 to enter outdoor heat exchanger D. In outdoor heat exchanger D, it evaporates into high-temperature, low-pressure gaseous refrigerant, and then flows into gas-liquid separator J through main three-way reversing valve C1, and finally returns to compressor A to complete the heating cycle; the other path passes through control valve E2 to enter indoor unit G1 to evaporate into high-temperature, low-pressure gaseous refrigerant, and then flows into gas-liquid separator J through branch three-way reversing valve C5, and finally returns to compressor A to complete the refrigeration cycle.

[0124] It should be understood that when the primary operating mode is heating, the second and third ports of the main three-way reversing valve are open, allowing the refrigerant to return to the compressor after condensing and releasing heat in the indoor unit being heated. Simultaneously, the second and third ports of the corresponding three-way reversing valve for the indoor unit being cooled are open, and its control valve opens, allowing another path of refrigerant to enter that indoor unit for further heat absorption. During this process, some of the condensation heat that would otherwise be discharged outdoors can be transferred to the indoor unit being cooled for utilization. In this way, heating demand is met while condensation heat that would otherwise be wasted is used for cooling, significantly improving system energy efficiency and reducing environmental heat load.

[0125] When the target operating mode is cooling water mode and hot water mode, the air conditioner can open the control valves corresponding to the cooling water tank and the hot water tank to be produced, and close the control valves corresponding to the other indoor heat exchange units besides the cooling water tank and the hot water tank to be produced; control the second and third ports of the main three-way reversing valve to be connected, the second and third ports of the branch three-way reversing valve corresponding to the cooling water tank to be connected, and the first and third ports of the branch three-way reversing valve of the hot water tank to be produced to be connected, so that the refrigerant enters the hot water tank to be produced through the branch three-way reversing valve of the hot water tank to be produced for heat exchange, and after heat exchange, returns to the compressor through the outdoor heat exchanger, and enters the cooling water tank to be produced through the control valve corresponding to the cooling water tank to be produced for heat exchange, and after heat exchange, returns to the compressor through the branch three-way reversing valve corresponding to the cooling water tank to be produced, thus executing the cooling water mode and the hot water mode.

[0126] In this embodiment, considering that when the target operating mode is cooling water mode and hot water mode, the user's hot water demand is generally greater, the hot water mode can be taken as the primary target operating mode.

[0127] Taking water tank H1 as the tank for producing hot water and H2 as the tank for producing cold water as an example, Figure 13 For a diagram illustrating the refrigerant flow when the target operating modes are cooling water mode and hot water mode, please refer to [link / reference]. Figure 13 .

[0128] The air conditioner can open control valves E4~E5 and close control valves E2~E3 corresponding to all indoor units G1~G2. Simultaneously, it controls the second and third ports of the main three-way reversing valve C1, the second and third ports of the branch three-way reversing valve C2, and the first and third ports of the branch three-way reversing valve C3 to be open. At this time, the outdoor heat exchanger D and the indoor heat exchanger of the water tank H2 act as evaporators, and the water tank H1 acts as a condenser.

[0129] In this case, the high-pressure vapor refrigerant discharged from compressor A can enter water tank H1 through three-way reversing valve C3. The refrigerant condenses into low-temperature, high-pressure liquid refrigerant in water tank H1 and then splits into two paths: one path passes through refrigerant heat dissipation device F to dissipate heat from the electronic control board, and then passes through main control valve E1 to enter outdoor heat exchanger D. In outdoor heat exchanger D, it evaporates into high-temperature, low-pressure gaseous refrigerant, and then flows into gas-liquid separator J through main three-way reversing valve C1, and finally returns to compressor A to complete the hot water cycle; the other path passes through control valve E5 to enter water tank H2 to evaporate into high-temperature, low-pressure gaseous refrigerant, and then flows into gas-liquid separator J through branch three-way reversing valve C2, and finally returns to compressor A to complete the cooling water cycle.

[0130] It should be understood that when the second and third ports of the main three-way reversing valve are open, the refrigerant returns to the compressor after condensing and releasing heat in the hot water tank. Simultaneously, the second and third ports of the corresponding three-way reversing valve for the chilled water tank are open, and its control valve opens, allowing another path of refrigerant to enter that tank for further heat absorption. During this process, some of the condensation heat that would otherwise be discharged outdoors can be transferred to the chilled water tank for utilization. In this way, the demand for hot water is met while the waste condensation heat is used for chilled water, significantly improving system energy efficiency and reducing environmental heat load.

[0131] In another possible implementation, the target operating mode can also be a combination of any three operating modes.

[0132] When the target operating mode is cooling mode, heating mode, or hot water mode, the air conditioner can open the control valves corresponding to the indoor unit to be cooled, the indoor unit to be heated, and the hot water tank to be produced, and close the control valves corresponding to the other indoor heat exchange units except for the indoor unit to be cooled, the indoor unit to be heated, and the aforementioned hot water tank to be produced. Then, based on the main target operating mode, the conduction status of each port of the main three-way reversing valve and the branch three-way reversing valve is determined.

[0133] If the primary target operating mode is cooling mode, the air conditioner can control the first and third ports of the main three-way reversing valve to be open, the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled to be open, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated and the hot water tank to be heated to be open. This allows the refrigerant to enter the outdoor heat exchanger through the main three-way reversing valve, and then enter the indoor unit to be cooled for heat exchange through the outdoor heat exchanger. It also allows the refrigerant to enter the indoor unit to be heated and the hot water tank to be heated for heat exchange through the branch three-way reversing valves corresponding to the indoor unit to be heated and the hot water tank to be heated for heat exchange. After heat exchange, the refrigerant merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled for heat exchange. After heat exchange, the refrigerant returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing cooling mode, heating mode, and hot water mode.

[0134] If the primary target operating mode is heating mode, the air conditioner can control the second and third ports of the main three-way reversing valve to be open, the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled to be open, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated and the hot water tank to be heated to be open. This allows the refrigerant to enter the indoor unit to be heated and the hot water tank to be heated through the branch three-way reversing valves for heat exchange. After heat exchange, the refrigerant returns to the compressor through the outdoor heat exchanger, and enters the indoor unit to be cooled through the control valve corresponding to the indoor unit to be cooled for heat exchange. After heat exchange, the refrigerant returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing cooling mode, heating mode, and hot water mode.

[0135] Taking indoor unit G1 as the unit to be cooled, G2 as the unit to be heated, and water tanks H1~H2 as the tanks to be used for hot water production, this example... Figure 14 For a diagram illustrating the refrigerant flow when the target operating modes are cooling, heating, and hot water production, and the primary target operating mode is cooling, please refer to [link / reference]. Figure 14 .

[0136] The air conditioner can open control valves E2~E5, simultaneously controlling the first and third ports of the main three-way reversing valve C1 to open, the second and third ports of the branch three-way reversing valve C5 to open, and the first and third ports of the branch three-way reversing valves C2~C4 to open. At this time, the outdoor heat exchanger D and the indoor heat exchangers and water tanks H1~H2 of the indoor unit G2 are condensers, and the indoor heat exchanger of the indoor unit G1 is an evaporator.

[0137] In this case, the high-pressure vapor refrigerant discharged from compressor A can be divided into two paths. One path enters the outdoor heat exchanger D through the main three-way reversing valve C1. The refrigerant condenses into a low-temperature, high-pressure liquid refrigerant in the outdoor heat exchanger D and then dissipates heat to the electronic control board through the refrigerant heat dissipation device F. The other path enters the indoor unit G2 and water tanks H1-H2 through the branch three-way reversing valves C2-C4 and condenses into a low-temperature, high-pressure liquid refrigerant. Then, it merges with the refrigerant in the outdoor heat exchanger pipe ② through the branch control valves E3-E5, and then enters the indoor unit G1 through the branch control valve E2. The refrigerant evaporates into a high-temperature, low-pressure gaseous refrigerant in the indoor unit G1, and then flows into the gas-liquid separator J through the branch three-way reversing valve C5. Finally, it returns to compressor A, completing the refrigeration cycle, heating cycle, and hot water cycle.

[0138] It should be understood that when the primary operating mode is cooling mode, the first and third ports of the main three-way reversing valve are connected, allowing the refrigerant to condense and release heat through the outdoor heat exchanger. Simultaneously, the first and third ports of the corresponding three-way reversing valves for the indoor unit to be heated and the hot water tank to be heated are connected, allowing the refrigerant to flow directly into the indoor unit for condensation and heating. During this process, the two refrigerant streams converge before entering the indoor unit to be cooled, jointly participating in evaporation and heat absorption, thus avoiding unnecessary heat loss. It can be understood that this embodiment, through coordinated valve control, allows the air conditioner to transfer some of the condensation heat that would otherwise be discharged outdoors to the indoor unit to be heated and the hot water tank to be heated when simultaneously operating in cooling, heating, and hot water modes. In this way, cooling needs are met while the previously wasted condensation heat is used for heating and hot water production, significantly improving system energy efficiency and reducing environmental heat load.

[0139] Continuing with the example of indoor unit G1 being the unit to be cooled, G2 being the unit to be heated, and water tanks H1~H2 being the tanks to be used for hot water production. Figure 15 For a diagram illustrating the refrigerant flow when the target operating modes are cooling, heating, and hot water, and the primary target operating mode is heating, please refer to [link / reference]. Figure 15 .

[0140] The air conditioner can open control valves E2~E5, simultaneously controlling the second and third ports of the main three-way reversing valve C1 to open, the second and third ports of the branch three-way reversing valve C5 to open, and the first and third ports of the branch three-way reversing valves C2~C4 to open. At this time, the outdoor heat exchanger D and the indoor heat exchanger of the indoor unit G1 are evaporators, and the indoor heat exchanger of the indoor unit G2 and the water tanks H1~H2 are condensers.

[0141] In this situation, the high-pressure vapor refrigerant discharged from compressor A can enter indoor unit G2 and water tanks H1-H2 through three-way reversing valves C2-C4. The refrigerant condenses into low-temperature, high-pressure liquid refrigerant in indoor unit G2 and water tanks H1-H2, and then splits into two paths: one path passes through the refrigerant heat dissipation device F to dissipate heat from the electronic control board, and then passes through the main control valve E1 to enter the outdoor heat exchanger D. In the outdoor heat exchanger D, it evaporates into high-temperature, low-pressure gaseous refrigerant, and then flows into the gas-liquid separator J through the main three-way reversing valve C1, and finally returns to the compressor, completing the heating and hot water cycle; the other path passes through the control valve E2 to enter indoor unit G1 to evaporate into high-temperature, low-pressure gaseous refrigerant, and then flows into the gas-liquid separator J through the branch three-way reversing valve C5, and finally returns to compressor A, completing the refrigeration cycle.

[0142] It should be understood that when the primary operating mode is heating, the second and third ports of the main three-way reversing valve are open, allowing the refrigerant to return to the compressor after condensation and heat release in the indoor unit to be heated and the hot water tank to be heated. Simultaneously, the second and third ports of the corresponding three-way reversing valve for the indoor unit to be cooled are open, and its control valve opens, allowing another path of refrigerant to enter that indoor unit for further heat absorption. During this process, some of the condensation heat that would otherwise be discharged outdoors can be transferred to the indoor unit to be cooled for utilization. This satisfies heating needs while utilizing previously wasted condensation heat for cooling, significantly improving system energy efficiency and reducing environmental heat load.

[0143] When the target operating mode is cooling mode, heating mode, or chilled water mode, the air conditioner can open the control valves corresponding to the indoor unit to be cooled, the indoor unit to be heated, and the water tank to be chilled, and close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be cooled, the indoor unit to be heated, and the water tank to be chilled. Then, based on the main target operating mode, the conduction status of each port of the main three-way reversing valve and the branch three-way reversing valve is determined.

[0144] If the primary target operating mode is cooling mode, the air conditioner can control the first and third ports of the main three-way reversing valve to be open, the second and third ports of the corresponding three-way reversing valves of the indoor unit to be cooled and the water tank to be cooled to be open, and the first and third ports of the three-way reversing valves of the indoor unit to be heated to be open. This allows the refrigerant to enter the outdoor heat exchanger through the main three-way reversing valve, and then enter the indoor unit to be cooled and the water tank to be cooled through the outdoor heat exchanger for heat exchange. It also enters the indoor unit to be heated through the corresponding three-way reversing valve for heat exchange. After heat exchange, it merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled and the water tank to be cooled for heat exchange. After heat exchange, it returns to the compressor through the corresponding three-way reversing valves of the indoor unit to be cooled and the water tank to be cooled, thus executing cooling mode, heating mode, and chilled water mode.

[0145] If the primary target operating mode is heating mode, the air conditioner can control the second and third ports of the main three-way reversing valve to be open, the second and third ports of the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled to be open, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated to be open. This allows the refrigerant to enter the indoor unit to be heated through the branch three-way reversing valve for heat exchange, and after heat exchange, return to the compressor through the outdoor heat exchanger, and enter the indoor unit to be cooled and the water tank to be cooled through the control valves corresponding to the indoor unit to be cooled and the water tank to be cooled for heat exchange, and after heat exchange, return to the compressor through the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled, thus executing cooling mode, heating mode, and chilled water mode.

[0146] Taking indoor unit G1 as the unit to be cooled, G2 as the unit to be heated, and water tanks H1~H2 as the water tanks to be cooled as an example. Figure 16 For a diagram illustrating the refrigerant flow when the target operating modes are cooling, heating, and chilled water modes, and the primary target operating mode is cooling, please refer to [link / reference]. Figure 16 .

[0147] The air conditioner can open control valves E2~E5, simultaneously controlling the first and third ports of the main three-way reversing valve C1 to be open, the second and third ports of the branch three-way reversing valves C2~C3 and C5 to be open, and the first and third ports of the branch three-way reversing valve C4 to be open. At this time, the outdoor heat exchanger D and the indoor heat exchanger of the indoor unit G2 are condensers, and the indoor heat exchanger of the indoor unit G1 and the water tanks H1~H2 are evaporators.

[0148] In this case, the high-pressure vapor refrigerant discharged from compressor A can be divided into two paths. One path enters the outdoor heat exchanger D through the main three-way reversing valve C1. The refrigerant condenses into a low-temperature, high-pressure liquid refrigerant in the outdoor heat exchanger D and then dissipates heat to the electronic control board through the refrigerant heat dissipation device F. The other path enters the indoor unit G2 through the branch three-way reversing valve C4 and condenses into a low-temperature, high-pressure liquid refrigerant. Then, it merges with the refrigerant in the outdoor heat exchanger pipe ② through the branch control valve E3, and then enters the indoor unit G1 and water tanks H1-H2 through the branch control valves E2, E4~E5. The refrigerant evaporates into a high-temperature, low-pressure gaseous refrigerant in the indoor unit G1 and water tanks H1~H2, and then flows into the gas-liquid separator J through the branch three-way reversing valves C2~C3, C5. Finally, it returns to compressor A, completing the refrigeration cycle, heating cycle, and chilled water cycle.

[0149] It should be understood that when the primary operating mode is cooling mode, the first and third ports of the main three-way reversing valve are open, allowing the refrigerant to condense and release heat through the outdoor heat exchanger. Simultaneously, the first and third ports of the corresponding three-way reversing valve for the indoor unit to be heated are open, allowing the refrigerant to flow directly into that indoor unit for condensation and heating. During this process, the two refrigerant streams converge before entering the indoor unit to be cooled, jointly participating in evaporation and heat absorption, thus avoiding unnecessary heat loss. It can be understood that this embodiment, through coordinated valve control, allows the air conditioner to transfer some of the condensation heat that would otherwise be discharged outdoors to the indoor unit to be heated when simultaneously operating in cooling, heating, and chilled water modes. In this way, cooling needs are met while utilizing the previously wasted condensation heat for heating, significantly improving system energy efficiency and reducing environmental heat load.

[0150] Continuing with the example of indoor unit G1 being the unit to be cooled, G2 being the unit to be heated, and water tanks H1~H2 being the water tanks to be cooled, the following steps will be taken. Figure 17 For a diagram illustrating the refrigerant flow when the target operating modes are cooling, heating, and chilled water modes, and the primary target operating mode is heating, please refer to [link / reference]. Figure 17 .

[0151] The air conditioner can open control valves E2~E5, simultaneously controlling the second and third ports of the main three-way reversing valve C1 to be open, the second and third ports of the branch three-way reversing valves C2~C3 and C5 to be open, and the first and third ports of the branch three-way reversing valve C4 to be open. At this time, the outdoor heat exchanger D and the indoor heat exchangers and water tanks H1~H2 of the indoor unit G1 are evaporators, and the indoor heat exchangers of the indoor unit G2 are condensers.

[0152] In this case, the high-pressure vapor refrigerant discharged from compressor A can enter indoor unit G2 through three-way reversing valve C4. The refrigerant condenses into low-temperature, high-pressure liquid refrigerant in indoor unit G2 and then splits into two paths: one path passes through refrigerant heat dissipation device F to dissipate heat from the electronic control board, and then passes through main control valve E1 to enter outdoor heat exchanger D. In outdoor heat exchanger D, it evaporates into high-temperature, low-pressure gaseous refrigerant, and then flows into gas-liquid separator J through main three-way reversing valve C1, and finally returns to compressor to complete the heating cycle; the other path passes through control valves E2, E4~E5 to enter indoor unit G1 and water tanks H1~H2 to evaporate into high-temperature, low-pressure gaseous refrigerant, and then flows into gas-liquid separator J through three-way reversing valves C2~C3, C5, and finally returns to compressor A to complete the refrigeration and refrigerant water cycle.

[0153] It should be understood that when the primary operating mode is heating, the second and third ports of the main three-way reversing valve are open, allowing the refrigerant to return to the compressor after condensing and releasing heat in the indoor unit to be heated. Simultaneously, the second and third ports of the corresponding three-way reversing valves for the indoor unit to be cooled and the water tank to be cooled are open, and their control valves open, allowing another path of refrigerant to enter the indoor unit and water tank for further heat absorption. During this process, some of the condensation heat that would otherwise be discharged outdoors can be transferred to the indoor unit to be cooled and the water tank to be cooled for utilization. This satisfies the heating demand while utilizing the condensation heat that would otherwise be wasted for cooling and chilled water, significantly improving system energy efficiency and reducing the environmental heat load.

[0154] When the target operating mode is cooling mode, hot water mode, or chilled water mode, the air conditioner can open the control valves corresponding to the indoor unit to be cooled, the hot water tank to be heated, and the chilled water tank to be cooled, and close the control valves corresponding to the other indoor heat exchange units besides the indoor unit to be cooled, the hot water tank to be heated, and the chilled water tank; it can also open the first and third ports of the main three-way reversing valve, open the second and third ports of the branch three-way reversing valves corresponding to the indoor unit to be cooled and the chilled water tank to be cooled, and close the first and third ports of the branch three-way reversing valves corresponding to the hot water tank to be heated. The third port is open, allowing the refrigerant to enter the outdoor heat exchanger through the main three-way reversing valve, and then enter the indoor unit to be cooled and the water tank to be cooled through the outdoor heat exchanger for heat exchange. It also enters the hot water tank to be cooled through the corresponding three-way reversing valve. After heat exchange, it merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled and the water tank to be cooled for heat exchange. After heat exchange, it returns to the compressor through the corresponding three-way reversing valve of the indoor unit to be cooled and the water tank to be cooled, thus executing the cooling mode, hot water mode, and chilled water mode.

[0155] In this embodiment, when the target operating mode is cooling mode, hot water mode, and chilled water mode, cooling mode can be the primary mode.

[0156] Taking indoor units G1~G2 as examples, where all are indoor units awaiting cooling, water tank H1 is a water tank awaiting cooling, and water tank H2 is a water tank awaiting hot water production, as an example... Figure 18 For a diagram illustrating the refrigerant flow when the target operating modes are cooling mode, hot water mode, and chilled water mode, please refer to [link / reference]. Figure 18 .

[0157] The air conditioner can open control valves E2~E5, simultaneously controlling the first and third ports of the main three-way reversing valve C1 to open, the second and third ports of the branch three-way reversing valves C3~C5 to open, and the first and third ports of the branch three-way reversing valve C2 to open. At this time, the outdoor heat exchanger D and the water tank H2 act as condensers, and the indoor heat exchangers of the indoor units G1~G2 and the water tank H1 act as evaporators.

[0158] In this case, the high-pressure vapor refrigerant discharged from compressor A can be divided into two paths: one path enters the outdoor heat exchanger D through the main three-way reversing valve C1, where the refrigerant condenses into a low-temperature, high-pressure liquid refrigerant, and then dissipates heat to the electronic control board through the refrigerant heat dissipation device F; the other path enters the water tank H2 through the branch three-way reversing valve C2, where it condenses into a low-temperature, high-pressure liquid refrigerant, and then merges with the refrigerant in the outdoor heat exchanger pipe ② through the branch control valve E5, and then enters the indoor units G1~G2 and the water tank H1 through the branch control valves E2~E4. The refrigerant evaporates into a high-temperature, low-pressure gaseous refrigerant in the indoor units G1~G2 and the water tank H1, and then flows into the gas-liquid separator J through the branch three-way reversing valves C3~C5, and finally returns to compressor A, completing the refrigeration cycle, hot water cycle, and chilled water cycle.

[0159] It should be understood that when the first and third ports of the main three-way reversing valve are connected, the refrigerant condenses and releases heat through the outdoor heat exchanger. Simultaneously, the first and third ports of the corresponding three-way reversing valve for the hot water tank are connected, allowing the refrigerant to flow directly into the tank for condensation and heating. During this process, the two refrigerant streams converge before entering the indoor unit to be cooled and the water tank to be cooled, jointly participating in evaporation and heat absorption, thus avoiding unnecessary heat loss. It can be understood that this embodiment, through coordinated valve control, allows the air conditioner to transfer some of the condensation heat that would otherwise be discharged outdoors to the hot water tank for utilization when simultaneously executing cooling, hot water production, and chilled water modes. In this way, cooling needs are met while the previously wasted condensation heat is used for heating, significantly improving system energy efficiency and reducing environmental heat load.

[0160] When the target operating mode is heating mode, hot water mode, or cooling water mode, the air conditioner can open the control valves corresponding to the indoor unit to be heated, the hot water tank to be heated, and the cooling water tank to be cooled, and close the control valves corresponding to the other indoor heat exchange units besides the indoor unit to be heated, the hot water tank to be heated, and the cooling water tank to be cooled. It controls the second and third ports of the main three-way reversing valve to be open, the second and third ports of the branch three-way reversing valve corresponding to the cooling water tank to be open, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated and the hot water tank to be heated to be opened, so that the refrigerant enters the indoor unit to be heated and the hot water tank to be heated through the branch three-way reversing valves of the indoor unit to be heated and the hot water tank to be heated for heat exchange, and after heat exchange, returns to the compressor through the outdoor heat exchanger, and enters the cooling water tank to be cooled through the control valve corresponding to the cooling water tank to be cooled for heat exchange, and after heat exchange, returns to the compressor through the branch three-way reversing valve corresponding to the cooling water tank to be cooled, thus executing the heating mode, hot water mode, and cooling water mode.

[0161] In this embodiment, when the target operating mode is heating mode, hot water mode, and cooling water mode, heating mode can be the primary mode.

[0162] Taking indoor units G1~G2 as examples, where each unit is a heating unit, water tank H1 is a hot water tank, and H2 is a cooling tank, as an example... Figure 19 For a diagram illustrating the refrigerant flow when the target operating modes are heating, hot water, and chilled water, and the primary target operating mode is heating, please refer to [link / reference]. Figure 19 .

[0163] The air conditioner can open control valves E2~E5, simultaneously controlling the second and third ports of the main three-way reversing valve C1 to open, the first and third ports of the branch three-way reversing valves C3~C5 to open, and the second and third ports of the branch three-way reversing valve C2 to open. At this time, the outdoor heat exchanger D and the water tank H2 act as evaporators, while the indoor heat exchangers of the indoor units G1~G2 and the water tank H1 act as condensers.

[0164] In this case, the high-pressure vapor refrigerant discharged from compressor A can enter indoor units G1-G2 and water tank H1 through three-way reversing valves C3-C5. The refrigerant condenses into low-temperature, high-pressure liquid refrigerant in indoor units G1-G2 and water tank H1, and then splits into two paths: one path passes through the refrigerant heat dissipation device F to dissipate heat from the electronic control board, and then passes through the main control valve E1 to enter the outdoor heat exchanger D. In the outdoor heat exchanger D, it evaporates into high-temperature, low-pressure gaseous refrigerant, and then flows into the gas-liquid separator J through the main three-way reversing valve C1, and finally returns to compressor A, completing the heating and hot water cycle; the other path passes through control valve E5 to enter water tank H2 to evaporate into high-temperature, low-pressure gaseous refrigerant, and then flows into the gas-liquid separator J through the three-way reversing valve C2, and finally returns to compressor A, completing the refrigerant water cycle.

[0165] It should be understood that when the second and third ports of the main three-way reversing valve are open, the refrigerant returns to the compressor after condensing and releasing heat in the indoor unit to be heated and the hot water tank to be heated. Simultaneously, the second and third ports of the corresponding three-way reversing valve for the water tank to be cooled are open, and its control valve opens, allowing another path of refrigerant to enter the tank for further heat absorption. During this process, some of the condensation heat that would otherwise be discharged outdoors can be transferred to the water tank to be cooled for utilization. This satisfies heating needs while utilizing previously wasted condensation heat for cooling water, significantly improving system energy efficiency and reducing environmental heat load.

[0166] In another possible implementation, the target operating mode can also be a combination of four operating modes.

[0167] That is, when the target operating mode is cooling mode, heating mode, chilled water mode, and hot water mode, the air conditioner can open the control valves corresponding to the indoor unit to be cooled, the indoor unit to be heated, the water tank to be cooled, and the water tank to be heated, and close the control valves corresponding to the other indoor heat exchange units except for the indoor unit to be cooled, the indoor unit to be heated, the water tank to be cooled, and the water tank to be heated.

[0168] If the primary target operating mode is cooling mode, then the first and third ports of the main three-way reversing valve are opened, the second and third ports of the corresponding three-way reversing valves for the indoor unit to be cooled and the water tank to be cooled are opened, and the first and third ports of the corresponding three-way reversing valves for the indoor unit to be heated and the water tank to be heated are opened. This allows the refrigerant to enter the outdoor heat exchanger through the main three-way reversing valve, and then enter the indoor unit to be cooled and the water tank to be cooled through the outdoor heat exchanger for heat exchange. It also enters the indoor unit to be heated and the water tank to be heated through the corresponding three-way reversing valves for heat exchange. After heat exchange, it merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled and the water tank to be cooled for heat exchange. Finally, it returns to the compressor through the corresponding three-way reversing valves for the indoor unit to be cooled and the water tank to be heated, thus executing the cooling mode, heating mode, chilled water mode, and hot water mode.

[0169] If the main target operating mode is heating mode, then the second and third ports of the main three-way reversing valve are connected, the second and third ports of the corresponding three-way reversing valves of the indoor unit to be cooled and the water tank to be cooled are connected, and the first and third ports of the three-way reversing valves of the indoor unit to be heated and the water tank to be heated are connected. This allows the refrigerant to enter the indoor unit to be heated and the water tank to be heated through the three-way reversing valve of the indoor unit to be heated for heat exchange. After heat exchange, the refrigerant returns to the compressor through the outdoor heat exchanger, and enters the indoor unit to be cooled and the water tank to be cooled through the control valves of the indoor unit to be cooled and the water tank to be cooled for heat exchange. After heat exchange, the refrigerant returns to the compressor through the corresponding three-way reversing valves of the indoor unit to be cooled and the water tank to be cooled, thus executing cooling mode, heating mode, chilled water mode, and hot water mode.

[0170] Taking indoor unit G1 as the unit to be cooled, G2 as the unit to be heated, water tank H1 as the water tank to be cooled, and H2 as the water tank to be heated as an example. Figure 20 For a diagram illustrating the refrigerant flow when the target operating modes are cooling, heating, chilled water, and hot water, and the primary target operating mode is cooling, please refer to [link / reference]. Figure 20 .

[0171] The air conditioner can open control valves E2~E5, simultaneously controlling the first and third ports of the main three-way reversing valve C1 to be open, the second and third ports of the branch three-way reversing valves C3 and C5 to be open, and the first and third ports of the branch three-way reversing valves C2 and C4 to be open. At this time, the outdoor heat exchanger D, the indoor heat exchanger of the indoor unit G2, and the water tank H2 are the condensers, and the indoor heat exchanger of the indoor unit G1 and the water tank H1 are the evaporators.

[0172] In this case, the high-pressure vapor refrigerant discharged from compressor A can be divided into two paths. One path enters the outdoor heat exchanger D through the main three-way reversing valve C1. The refrigerant condenses into a low-temperature, high-pressure liquid refrigerant in the outdoor heat exchanger D and then dissipates heat to the electronic control board through the refrigerant heat dissipation device F. The other path enters the indoor unit G2 and water tank H2 through the branch three-way reversing valves C2 and C4 and condenses into a low-temperature, high-pressure liquid refrigerant. Then, it merges with the refrigerant in the outdoor heat exchanger pipe ② through the branch control valves E3 and E5, and then enters the indoor unit G1 and water tank H1 through the branch control valves E2 and E4. The refrigerant evaporates into a high-temperature, low-pressure gaseous refrigerant in the indoor unit G1 and water tank H1, and then flows into the gas-liquid separator J through the branch three-way reversing valves C3 and C5. Finally, it returns to compressor A, completing the refrigeration cycle, heating cycle, hot water cycle, and chilled water cycle.

[0173] It should be understood that when the primary operating mode is cooling mode, the first and third ports of the main three-way reversing valve are connected, allowing the refrigerant to condense and release heat through the outdoor heat exchanger. Simultaneously, the first and third ports of the corresponding three-way reversing valves for the indoor unit to be heated and the water tank to be heated are connected, allowing the refrigerant to flow directly into the indoor unit and water tank for condensation and heating. During this process, the two refrigerant streams converge before entering the indoor unit to be cooled and the water tank to be cooled, jointly participating in evaporation and heat absorption, thereby avoiding unnecessary heat loss. It can be understood that this embodiment, through coordinated valve control, allows the air conditioner to transfer some of the condensation heat that would otherwise be discharged outdoors to the indoor unit to be heated and the water tank to be heated when simultaneously operating in cooling, heating, hot water, and chilled water modes. In this way, cooling needs are met while the previously wasted condensation heat is used for heating, significantly improving system energy efficiency and reducing environmental heat load.

[0174] Continuing with the example of indoor unit G1 being the unit to be cooled, G2 being the unit to be heated, water tank H1 being the water tank to be cooled, and H2 being the water tank to be heated. Figure 21 For a diagram illustrating the refrigerant flow when the target operating modes are cooling, heating, chilled water, and hot water, and the primary target operating mode is heating, please refer to [link to diagram]. Figure 21 .

[0175] The air conditioner can open control valves E2~E5, simultaneously controlling the second and third ports of the main three-way reversing valve C1 to be open, the second and third ports of the branch three-way reversing valves C3 and C5 to be open, and the first and third ports of the branch three-way reversing valves C2 and C4 to be open. At this time, the outdoor heat exchanger D and the indoor heat exchanger and water tank H1 of the indoor unit G1 are evaporators, and the indoor heat exchanger and water tank H2 of the indoor unit G2 are condensers.

[0176] In this case, the high-pressure vapor refrigerant discharged from compressor A can enter indoor unit G2 and water tank H2 through three-way reversing valves C2 and C4. After the refrigerant condenses into low-temperature, high-pressure liquid refrigerant in indoor unit G2 and water tank H2, it is divided into two paths: one path passes through the refrigerant heat dissipation device F to dissipate heat from the electronic control board, and then passes through the main control valve E1 to enter the outdoor heat exchanger D. In the outdoor heat exchanger D, it evaporates into high-temperature, low-pressure gaseous refrigerant, and then flows into the gas-liquid separator J through the main three-way reversing valve C1, and finally returns to compressor A, completing the heating and hot water circulation; the other path passes through control valves E2 and E4 to enter indoor unit G1 and water tank H1 to evaporate into high-temperature, low-pressure gaseous refrigerant, and then flows into the gas-liquid separator J through the branch three-way reversing valves C3 and C5, and finally returns to compressor A, completing the cooling and cooling water circulation.

[0177] It should be understood that when the primary operating mode is heating, the second and third ports of the main three-way reversing valve are open, allowing the refrigerant to return to the compressor after condensation and heat release in the indoor unit to be heated and the hot water tank to be heated. Simultaneously, the second and third ports of the corresponding three-way reversing valves for the indoor unit to be cooled and the water tank to be cooled are open, and their control valves are also opened, allowing another path of refrigerant to enter the indoor unit and water tank for further heat absorption. During this process, some of the condensation heat that would otherwise be discharged outdoors can be transferred to the indoor unit to be cooled and the water tank to be cooled for utilization. This satisfies the heating demand while utilizing the condensation heat that would otherwise be wasted for cooling and chilled water, significantly improving system energy efficiency and reducing the environmental heat load.

[0178] In addition, while operating in the target mode, the air conditioner can also control the second and third ports of the three-way reversing valves corresponding to other indoor heat exchange units to be connected.

[0179] During this process, since the control valves corresponding to other indoor heat exchange units are in the closed state, and the second and third ports of their corresponding three-way reversing valves are connected, the refrigerant will not enter other indoor heat exchange units for heat exchange regardless of the target operating mode. This avoids ineffective refrigerant distribution and ensures full utilization of the refrigerant in the heating cycle.

[0180] Furthermore, since other indoor heat exchange units can be connected to the gas-liquid separator J via their corresponding three-way reversing valves, it can also ensure that when the target operating mode is executed, the refrigerant that may have accumulated in other indoor heat exchange units that do not require operation during previous operation is drawn back into the gas-liquid separator J, further improving the system energy efficiency of the air conditioner.

[0181] This application also provides an air conditioning control device. Figure 22 Please refer to the block diagram of an air conditioning control device provided in the embodiments of this application. Figure 22 The device includes a receiving module and a control module.

[0182] The receiving module is used to receive the operation instructions sent by the user. The operation instructions include a target operation mode, and the target operation mode is at least one of cooling mode, heating mode, hot water mode and chilled water mode. When there are multiple target operation modes, each target operation mode operates simultaneously.

[0183] Understandably, the receiving module can also be used to perform the above step S20.

[0184] The control module is used to control the switching of the main three-way reversing valve and each branch three-way reversing valve according to the target operating mode, and to control the opening and closing of the control valves corresponding to each indoor heat exchange unit, so that the refrigerant can exchange heat through the indoor heat exchange unit corresponding to the target operating mode and execute the target operating mode.

[0185] Understandably, this control module can also be used to perform the above step S21.

[0186] Optionally, the control module is also used to open the control valve corresponding to the indoor unit to be cooled, and close the control valves corresponding to other indoor heat exchange units besides the indoor unit to be cooled; control the first and third ports of the main three-way reversing valve to be open, and the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled to be open, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, and enters the indoor unit to be cooled through the outdoor heat exchanger for heat exchange, and returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled after heat exchange, thus executing the cooling mode.

[0187] Optionally, the control module is also used to open the control valve corresponding to the indoor unit to be heated, and close the control valves corresponding to other indoor heat exchange units besides the indoor unit to be heated; control the second and third ports of the main three-way reversing valve to be connected, and the first and third ports of the branch three-way reversing valve corresponding to the indoor unit to be heated to be connected, so that the refrigerant enters the indoor unit to be heated through the branch three-way reversing valve corresponding to the indoor unit to be heated for heat exchange, and returns to the compressor through the outdoor heat exchanger after heat exchange, thus executing the heating mode.

[0188] Optionally, the control module is also used to open the control valve corresponding to the hot water tank to be produced, and close the control valves corresponding to other indoor heat exchange units besides the hot water tank to be produced; control the second and third ports of the main three-way reversing valve to be connected, and the first and third ports of the branch three-way reversing valve corresponding to the hot water tank to be produced to be connected, so that the refrigerant enters the hot water tank to be produced through the branch three-way reversing valve corresponding to the hot water tank to be produced for heat exchange, and returns to the compressor through the outdoor heat exchanger after heat exchange, thus executing the hot water production mode.

[0189] Optionally, the control module is also used to open the control valve corresponding to the water tank to be cooled, and close the control valves corresponding to other indoor heat exchange units besides the water tank to be cooled; control the first and third ports of the main three-way reversing valve to be open, and the second and third ports of the branch three-way reversing valve corresponding to the water tank to be cooled to be open, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, and enters the water tank to be cooled through the outdoor heat exchanger for heat exchange, and returns to the compressor through the branch three-way reversing valve corresponding to the water tank to be cooled after heat exchange, thus executing the cooling water mode.

[0190] Optionally, the control module is also used to open the control valves corresponding to the indoor unit to be cooled and the hot water tank to be produced, and close the control valves corresponding to other indoor heat exchange units besides the indoor unit to be cooled and the hot water tank to be produced; control the first and third ports of the main three-way reversing valve to be open, the first and third ports of the branch three-way reversing valve corresponding to the hot water tank to be produced to be open, and the second and third ports of the indoor unit to be cooled to be open, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, enters the indoor unit to be cooled through the outdoor heat exchanger for heat exchange, and enters the hot water tank to be produced through the branch three-way reversing valve corresponding to the hot water tank to be produced for heat exchange. After heat exchange, it merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled for heat exchange. After heat exchange, it returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing the cooling mode and the hot water production mode.

[0191] Optionally, the control module is also used to open the control valves corresponding to the water tank to be cooled and the indoor unit to be cooled, and close the control valves corresponding to other indoor heat exchange units besides the water tank to be cooled and the indoor unit to be cooled; control the first and third ports of the main three-way reversing valve to be open, and the second and third ports of the indoor unit to be cooled and the water tank to be cooled to be open, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, and enters the water tank to be cooled and the indoor unit to be cooled through the outdoor heat exchanger for heat exchange, and after heat exchange, returns to the compressor through the corresponding three-way reversing valves of the indoor unit to be cooled and the water tank to be cooled, and executes the cooling mode and the chilled water mode.

[0192] Optionally, the control module is also used to open the control valves corresponding to the hot water tank and the indoor unit to be heated, and close the control valves corresponding to other indoor heat exchange units besides the hot water tank and the indoor unit to be heated; control the second and third ports of the main three-way reversing valve to be connected, and the first and third ports of the branch three-way reversing valves corresponding to the hot water tank and the indoor unit to be heated to be connected, so that the refrigerant enters the hot water tank and the indoor unit to be heated through the branch three-way reversing valves corresponding to the hot water tank and the indoor unit to be heated for heat exchange, and returns to the compressor through the outdoor heat exchanger after heat exchange, thus executing the heating mode and the hot water mode.

[0193] Optionally, the control module is also used to open the control valves corresponding to the indoor unit to be heated and the water tank to be cooled, and close the control valves corresponding to other indoor heat exchange units besides the indoor unit to be heated and the water tank to be cooled; control the second and third ports of the main three-way reversing valve to be connected, the first and third ports of the branch three-way reversing valve corresponding to the indoor unit to be heated to be connected, and the second and third ports of the branch three-way reversing valve corresponding to the water tank to be cooled to be connected, so that the refrigerant enters the indoor unit to be heated through the branch three-way reversing valve corresponding to the indoor unit to be heated for heat exchange, and after heat exchange, returns to the compressor through the outdoor heat exchanger, and enters the water tank to be cooled through the control valve corresponding to the water tank to be cooled for heat exchange, and after heat exchange, returns to the compressor through the branch three-way reversing valve corresponding to the water tank to be cooled, thus executing the heating mode and the cooling water mode.

[0194] Optionally, the control module is also used to open the control valves corresponding to the indoor units to be cooled and the indoor units to be heated, and to close the control valves corresponding to other indoor heat exchange units besides the indoor units to be cooled and the indoor units to be heated. If the main target operating mode is cooling mode, the first and third ports of the main three-way reversing valve, the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled, and the first and third ports of the branch three-way reversing valve corresponding to the indoor unit to be heated are controlled to open, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, enters the indoor unit to be cooled through the outdoor heat exchanger for heat exchange, and enters the indoor unit to be heated through the branch three-way reversing valve corresponding to the indoor unit to be heated for heat exchange. After heat exchange, it merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled. In the cooling indoor unit, heat exchange occurs, and after heat exchange, the refrigerant returns to the compressor through the corresponding three-way reversing valve of the indoor unit to be cooled, executing cooling and heating modes. If the main target operating mode is heating mode, the second and third ports of the main three-way reversing valve are connected, the second and third ports of the corresponding three-way reversing valve of the indoor unit to be cooled are connected, and the first and third ports of the corresponding three-way reversing valve of the indoor unit to be heated are connected, so that the refrigerant enters the indoor unit to be heated through the three-way reversing valve of the indoor unit to be heated for heat exchange, and after heat exchange, it returns to the compressor through the outdoor heat exchanger, and enters the indoor unit to be cooled through the corresponding control valve of the indoor unit to be cooled for heat exchange, and after heat exchange, it returns to the compressor through the corresponding three-way reversing valve of the indoor unit to be cooled, executing cooling and heating modes.

[0195] Optionally, the control module is also used to open the control valves corresponding to the water tank to be cooled and the water tank to be heated, and close the control valves corresponding to other indoor heat exchange units besides the water tank to be cooled and the water tank to be heated; control the second and third ports of the main three-way reversing valve to be connected, the second and third ports of the branch three-way reversing valve corresponding to the water tank to be cooled to be connected, and the first and third ports of the branch three-way reversing valve of the water tank to be heated to be connected, so that the refrigerant enters the water tank to be heated through the branch three-way reversing valve of the water tank to be heated for heat exchange, and after heat exchange, returns to the compressor through the outdoor heat exchanger, and enters the water tank to be cooled through the control valve corresponding to the water tank to be cooled for heat exchange, and after heat exchange, returns to the compressor through the branch three-way reversing valve corresponding to the water tank to be cooled, thus executing the cooling water mode and the hot water mode.

[0196] Optionally, the control module is also used to open the control valves corresponding to the indoor unit to be cooled, the indoor unit to be heated, and the hot water tank to be heated, and to close the control valves corresponding to other indoor heat exchange units besides the indoor unit to be cooled, the indoor unit to be heated, and the aforementioned hot water tank to be heated. If the main target operating mode is cooling mode, the first and third ports of the main three-way reversing valve, the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated and the hot water tank to be heated are opened, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, enters the indoor unit to be cooled through the outdoor heat exchanger for heat exchange, and enters the indoor unit to be heated and the hot water tank to be heated through the branch three-way reversing valves corresponding to the indoor unit to be heated and the hot water tank to be heated for heat exchange. After heat exchange, it merges with the refrigerant passing through the outdoor heat exchanger. The refrigerant enters the indoor unit to be cooled for heat exchange. After heat exchange, it returns to the compressor through the corresponding three-way reversing valve of the indoor unit to be cooled, executing cooling mode, heating mode, and hot water mode. If the main target operating mode is heating mode, the second and third ports of the main three-way reversing valve, the second and third ports of the corresponding three-way reversing valve of the indoor unit to be cooled, and the first and third ports of the three-way reversing valves of the indoor unit to be heated and the hot water tank to be heated are opened, so that the refrigerant enters the indoor unit to be heated and the hot water tank to be heated through the three-way reversing valves of the indoor unit to be heated and the hot water tank to be heated for heat exchange. After heat exchange, it returns to the compressor through the outdoor heat exchanger and enters the indoor unit to be cooled through the control valve of the indoor unit to be cooled for heat exchange. After heat exchange, it returns to the compressor through the corresponding three-way reversing valve of the indoor unit to be cooled, executing cooling mode, heating mode, and hot water mode.

[0197] Optionally, the control module is also used to open the control valves corresponding to the indoor unit to be cooled, the indoor unit to be heated, and the water tank to be cooled, and to close the control valves corresponding to other indoor heat exchange units besides the indoor unit to be cooled, the indoor unit to be heated, and the water tank to be cooled. If the main target operating mode is cooling mode, the first and third ports of the main three-way reversing valve are opened, the second and third ports of the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled are opened, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated are opened, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, and enters the indoor unit to be cooled and the water tank to be cooled through the outdoor heat exchanger for heat exchange, and enters the indoor unit to be heated through the branch three-way reversing valve corresponding to the indoor unit to be heated for heat exchange, and after heat exchange, it merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled and the water tank to be cooled. Heat exchange occurs during operation, and after heat exchange, the refrigerant returns to the compressor through the corresponding three-way reversing valves of the indoor unit to be cooled and the water tank to be cooled, executing cooling mode, heating mode, and chilled water mode. If the main target operating mode is heating mode, the second and third ports of the main three-way reversing valve, the second and third ports of the corresponding three-way reversing valves of the indoor unit to be cooled and the water tank to be cooled, and the first and third ports of the three-way reversing valve of the indoor unit to be heated are connected, so that the refrigerant enters the indoor unit to be heated through the three-way reversing valve of the indoor unit to be heated for heat exchange, and after heat exchange, it returns to the compressor through the outdoor heat exchanger, and enters the indoor unit to be cooled and the water tank to be cooled through the corresponding control valves of the indoor unit to be cooled and the water tank to be cooled for heat exchange, and after heat exchange, it returns to the compressor through the corresponding three-way reversing valves of the indoor unit to be cooled and the water tank to be cooled, executing cooling mode, heating mode, and chilled water mode.

[0198] Optionally, the control module is also used to open the control valves corresponding to the indoor unit to be cooled, the hot water tank to be produced, and the water tank to be cooled, and to close the control valves corresponding to other indoor heat exchange units besides the indoor unit to be cooled, the hot water tank to be produced, and the water tank to be cooled; to control the first and third ports of the main three-way reversing valve to be open, the second and third ports of the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled to be open, and the first and third ports of the branch three-way reversing valve of the hot water tank to be produced to be open, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, and enters the indoor unit to be cooled and the water tank to be cooled through the outdoor heat exchanger for heat exchange, and enters the hot water tank to be produced through the branch three-way reversing valve corresponding to the hot water tank to be produced for heat exchange, and after heat exchange, merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled and the water tank to be cooled for heat exchange, and after heat exchange, returns to the compressor through the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled, and executes the cooling mode, the hot water mode, and the chilled water mode.

[0199] Optionally, the control module is also used to open the control valves corresponding to the indoor unit to be heated, the hot water tank to be heated, and the water tank to be cooled, and to close the control valves corresponding to other indoor heat exchange units besides the indoor unit to be heated, the hot water tank to be heated, and the water tank to be cooled; to control the second and third ports of the main three-way reversing valve to be connected, the second and third ports of the branch three-way reversing valve corresponding to the water tank to be cooled to be connected, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated and the hot water tank to be heated to be connected, so that the refrigerant enters the indoor unit to be heated and the hot water tank to be heated through the branch three-way reversing valves of the indoor unit to be heated and the hot water tank to be heated for heat exchange, and after heat exchange, returns to the compressor through the outdoor heat exchanger, and enters the water tank to be cooled through the control valve corresponding to the water tank to be cooled for heat exchange, and after heat exchange, returns to the compressor through the branch three-way reversing valve corresponding to the water tank to be cooled, thus executing the heating mode, the hot water mode, and the cooling water mode.

[0200] Optionally, the control module is also used to open the control valves corresponding to the indoor unit to be cooled, the indoor unit to be heated, the water tank to be cooled, and the water tank to be heated, and to close the control valves corresponding to other indoor heat exchange units besides the indoor unit to be cooled, the indoor unit to be heated, the water tank to be cooled, and the water tank to be heated. If the main target operating mode is cooling mode, the first and third ports of the main three-way reversing valve are opened, the second and third ports of the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled are opened, and the first and third ports of the branch three-way reversing valves corresponding to the indoor unit to be heated and the water tank to be heated are opened, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, and enters the indoor unit to be cooled and the water tank to be cooled through the outdoor heat exchanger for heat exchange, and enters the indoor unit to be heated and the water tank to be heated through the branch three-way reversing valves corresponding to the indoor unit to be heated and the water tank to be heated for heat exchange, and after heat exchange, it merges with the refrigerant passing through the outdoor heat exchanger and enters the indoor unit to be cooled and the water tank to be heated. Heat exchange occurs in the chilled water tank, and the refrigerant returns to the compressor through the corresponding three-way reversing valves of the indoor unit to be cooled and the chilled water tank. This executes cooling mode, heating mode, chilled water mode, and hot water mode. If the primary target operating mode is heating mode, the second and third ports of the main three-way reversing valve, the second and third ports of the corresponding three-way reversing valves of the indoor unit to be cooled and the chilled water tank, and the first and third ports of the three-way reversing valves of the indoor unit to be heated and the hot water tank to be heated are connected. This allows the refrigerant to enter the indoor unit to be heated and the hot water tank through the three-way reversing valve of the indoor unit to be heated for heat exchange. After heat exchange, the refrigerant returns to the compressor through the outdoor heat exchanger, and also enters the indoor unit to be cooled and the chilled water tank through the corresponding control valves of the indoor unit to be cooled and the chilled water tank for heat exchange. After heat exchange, the refrigerant returns to the compressor through the corresponding three-way reversing valves of the indoor unit to be cooled and the chilled water tank to be heated, executing cooling mode, heating mode, chilled water mode, and hot water mode.

[0201] Optionally, the control module is also used to control the connection between the second and third ports of the three-way reversing valves corresponding to other indoor heat exchange units.

[0202] Optionally, the control module is further configured to, if the target operating mode includes a hot water production mode and the target water temperature in the operating command is greater than the preset maximum water temperature, stop executing the hot water production mode when the water temperature in the hot water tank reaches the maximum water temperature, and control the heating device in the hot water tank to heat until the water temperature in the hot water tank reaches the target water temperature.

[0203] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a main controller, can implement the air conditioning control method provided in this application.

[0204] While this application discloses the above information, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of this application; therefore, the scope of protection of this application shall be determined by the scope defined in the claims.

Claims

1. An air conditioning control method, characterized in that, The method is applied to an air conditioner, which includes multiple indoor heat exchange units, a main three-way reversing valve, and multiple branch three-way reversing valves, each branch three-way reversing valve corresponding to one indoor heat exchange unit. The compressor discharge port is connected to the first port of the main three-way reversing valve and each of the branch three-way reversing valves, the compressor suction port is connected to the second port of the main three-way reversing valve and each of the branch three-way reversing valves, and the third port of the main three-way reversing valve is connected to an outdoor heat exchanger. The third port of each branch three-way reversing valve is connected to its corresponding indoor heat exchange unit, and each indoor heat exchange unit is also connected to the outdoor heat exchanger via a corresponding control valve. Each indoor heat exchange unit includes an indoor unit and a water tank. Receives operation instructions sent by the user; the operation instructions include a target operation mode, and the target operation mode is at least one of cooling mode, heating mode, hot water mode and chilled water mode, and when there are multiple target operation modes, each target operation mode operates simultaneously; According to the target operating mode, the main three-way reversing valve and each of the branch three-way reversing valves are reversing control, and the control valves corresponding to each of the indoor heat exchange units are opening and closing control, so that the refrigerant can exchange heat through the indoor heat exchange unit corresponding to the target operating mode and execute the target operating mode.

2. The method according to claim 1, characterized in that, The target operating mode is cooling mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valve corresponding to the indoor unit to be cooled, and close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be cooled. The first and third ports of the main three-way reversing valve are connected, and the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled are connected, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, and then enters the indoor unit to be cooled through the outdoor heat exchanger for heat exchange. After heat exchange, it returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing the cooling mode.

3. The method according to claim 1, characterized in that, The target operating mode is heating mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valve corresponding to the indoor unit to be heated, and close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be heated. The second and third ports of the main three-way reversing valve are connected, and the first and third ports of the branch three-way reversing valve corresponding to the indoor unit to be heated are connected, so that the refrigerant enters the indoor unit to be heated through the branch three-way reversing valve corresponding to the indoor unit to be heated for heat exchange, and returns to the compressor through the outdoor heat exchanger after heat exchange, thus executing the heating mode.

4. The method according to claim 1, characterized in that, The target operating mode is hot water production mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valve corresponding to the hot water tank to be produced, and close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange unit, except for the hot water tank to be produced. The second and third ports of the main three-way reversing valve are connected, and the first and third ports of the branch three-way reversing valve corresponding to the hot water tank are connected, so that the refrigerant enters the hot water tank through the branch three-way reversing valve corresponding to the hot water tank for heat exchange, and returns to the compressor through the outdoor heat exchanger after heat exchange, thus executing the hot water production mode.

5. The method according to claim 1, characterized in that, The target operating mode is chilled water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valve corresponding to the water tank to be cooled, and close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange unit, except for the water tank to be cooled. The first and third ports of the main three-way reversing valve are connected, and the second and third ports of the branch three-way reversing valve corresponding to the water tank to be cooled are connected, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, and then enters the water tank to be cooled through the outdoor heat exchanger for heat exchange. After heat exchange, it returns to the compressor through the branch three-way reversing valve corresponding to the water tank to be cooled, thus executing the cooling water mode.

6. The method according to claim 1, characterized in that, The target operating modes are cooling mode and hot water production mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the indoor unit to be cooled and the hot water tank to be heated, and close the control valves corresponding to other indoor heat exchange units except for the indoor unit to be cooled and the hot water tank to be heated; The system controls the first and third ports of the main three-way reversing valve to be open, the first and third ports of the branch three-way reversing valve corresponding to the hot water tank to be produced to be open, and the second and third ports of the indoor unit to be cooled to be open, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, enters the indoor unit to be cooled through the outdoor heat exchanger for heat exchange, and enters the hot water tank to be produced through the branch three-way reversing valve corresponding to the hot water tank to be produced for heat exchange. After heat exchange, it merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled for heat exchange. After heat exchange, it returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing the cooling mode and the hot water production mode.

7. The method according to claim 1, characterized in that, The target operating modes are cooling mode and cooling water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the water tank to be cooled and the indoor unit to be cooled, and close the control valves corresponding to other indoor heat exchange units except for the water tank to be cooled and the indoor unit to be cooled; The first and third ports of the main three-way reversing valve are connected, as are the second and third ports of the indoor unit to be cooled and the water tank to be cooled, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, and then enters the water tank to be cooled and the indoor unit to be cooled for heat exchange through the outdoor heat exchanger. After heat exchange, the refrigerant returns to the compressor through the corresponding three-way reversing valves of the indoor unit to be cooled and the water tank to be cooled, thus executing the cooling mode and the chilled water mode.

8. The method according to claim 1, characterized in that, The target operating modes are heating mode and hot water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the hot water tank and the indoor unit to be heated, and close the control valves corresponding to other indoor heat exchange units except for the hot water tank and the indoor unit to be heated; The second and third ports of the main three-way reversing valve are connected, and the first and third ports of the corresponding three-way reversing valves of the hot water tank and the indoor unit to be heated are connected, so that the refrigerant enters the hot water tank and the indoor unit to be heated through the corresponding three-way reversing valves for heat exchange, and returns to the compressor through the outdoor heat exchanger after heat exchange, thus executing the heating mode and the hot water mode.

9. The method according to claim 1, characterized in that, The target operating modes are heating mode and cooling water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the indoor unit to be heated and the water tank to be cooled, and close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be heated and the water tank to be cooled. The second and third ports of the main three-way reversing valve, the first and third ports of the branch three-way reversing valve corresponding to the indoor unit to be heated, and the second and third ports of the branch three-way reversing valve corresponding to the water tank to be cooled are connected, so that the refrigerant enters the indoor unit to be heated through the branch three-way reversing valve corresponding to the indoor unit to be heated for heat exchange, and after heat exchange, returns to the compressor through the outdoor heat exchanger, and enters the water tank to be cooled through the control valve corresponding to the water tank to be cooled for heat exchange, and after heat exchange, returns to the compressor through the branch three-way reversing valve corresponding to the water tank to be cooled, thus executing the heating mode and the cooling water mode.

10. The method according to claim 1, characterized in that, The target operating modes are cooling mode and heating mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the indoor unit to be cooled and the indoor unit to be heated, and close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be cooled and the indoor unit to be heated. If the main target operating mode is the cooling mode, then the first and third ports of the main three-way reversing valve, the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled, and the first and third ports of the branch three-way reversing valve of the indoor unit to be heated are opened, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, enters the indoor unit to be cooled through the outdoor heat exchanger for heat exchange, and enters the indoor unit to be heated through the branch three-way reversing valve corresponding to the indoor unit to be heated for heat exchange. After heat exchange, it merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled for heat exchange. After heat exchange, it returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing the cooling mode and the heating mode. If the primary target operating mode is heating mode, then the second and third ports of the main three-way reversing valve are connected, the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled are connected, and the first and third ports of the branch three-way reversing valve of the indoor unit to be heated are connected, so that the refrigerant enters the indoor unit to be heated through the branch three-way reversing valve of the indoor unit to be heated for heat exchange, and after heat exchange, returns to the compressor through the outdoor heat exchanger, and enters the indoor unit to be cooled through the control valve corresponding to the indoor unit to be cooled for heat exchange, and after heat exchange, returns to the compressor through the branch three-way reversing valve of the indoor unit to be cooled, thus executing the cooling mode and the heating mode.

11. The method according to claim 1, characterized in that, The target operating modes are cooling water mode and hot water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the water tank to be cooled and the hot water tank to be produced, and close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange unit, except for the water tank to be cooled and the hot water tank to be produced. The second and third ports of the main three-way reversing valve, the second and third ports of the branch three-way reversing valve corresponding to the water tank to be cooled, and the first and third ports of the branch three-way reversing valve of the water tank to be heated are connected, so that the refrigerant enters the water tank to be heated through the branch three-way reversing valve of the water tank to be heated for heat exchange, and after heat exchange, returns to the compressor through the outdoor heat exchanger, and enters the water tank to be cooled through the control valve corresponding to the water tank to be cooled for heat exchange, and after heat exchange, returns to the compressor through the branch three-way reversing valve of the water tank to be cooled, thus executing the cooling water mode and the hot water mode.

12. The method according to claim 1, characterized in that, The target operating modes are cooling mode, heating mode, and hot water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the indoor unit to be cooled, the indoor unit to be heated, and the hot water tank to be heated; close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be cooled, the indoor unit to be heated, and the hot water tank to be heated. If the main target operating mode is cooling mode, then the first and third ports of the main three-way reversing valve are opened, the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled are opened, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated and the hot water tank to be heated are opened, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, enters the indoor unit to be cooled through the outdoor heat exchanger for heat exchange, and enters the indoor unit to be heated and the hot water tank to be heated through the branch three-way reversing valves corresponding to the indoor unit to be heated and the hot water tank to be heated for heat exchange. After heat exchange, it merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled for heat exchange. After heat exchange, it returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing the cooling mode, the heating mode, and the hot water mode. If the primary target operating mode is heating mode, then the second and third ports of the main three-way reversing valve are connected, the second and third ports of the branch three-way reversing valve corresponding to the indoor unit to be cooled are connected, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated and the hot water tank to be heated are connected. This allows the refrigerant to enter the indoor unit to be heated and the hot water tank to be heated through the branch three-way reversing valves of the indoor unit to be heated and the hot water tank to be heated for heat exchange. After heat exchange, the refrigerant returns to the compressor through the outdoor heat exchanger and enters the indoor unit to be cooled through the control valve corresponding to the indoor unit to be cooled for heat exchange. After heat exchange, the refrigerant returns to the compressor through the branch three-way reversing valve corresponding to the indoor unit to be cooled, thus executing the cooling mode, the heating mode, and the hot water mode.

13. The method according to claim 1, characterized in that, The target operating modes are cooling mode, heating mode, and chilled water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the indoor unit to be cooled, the indoor unit to be heated, and the water tank to be cooled; close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be cooled, the indoor unit to be heated, and the water tank to be cooled. If the primary target operating mode is cooling mode, then the first and third ports of the main three-way reversing valve are opened, the second and third ports of the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled are opened, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated are opened, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, enters the indoor unit to be cooled and the water tank to be cooled through the outdoor heat exchanger for heat exchange, and enters the indoor unit to be heated through the branch three-way reversing valve corresponding to the indoor unit to be heated for heat exchange. After heat exchange, it merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled and the water tank to be cooled for heat exchange. After heat exchange, it returns to the compressor through the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled, thus executing the cooling mode, the heating mode, and the chilled water mode. If the primary target operating mode is heating mode, then the second and third ports of the main three-way reversing valve are connected, the second and third ports of the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled are connected, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated are connected. This allows the refrigerant to enter the indoor unit to be heated through the branch three-way reversing valve for heat exchange, and after heat exchange, return to the compressor through the outdoor heat exchanger, and enter the indoor unit to be cooled and the water tank to be cooled through the control valves corresponding to the indoor unit to be cooled and the water tank to be cooled for heat exchange, and after heat exchange, return to the compressor through the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled, thus executing the cooling mode, the heating mode, and the chilled water mode.

14. The method according to claim 1, characterized in that, The target operating modes are cooling mode, hot water mode, and chilled water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the indoor unit to be cooled, the hot water tank to be produced, and the water tank to be cooled; close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be cooled, the hot water tank to be produced, and the water tank to be cooled. The system controls the first and third ports of the main three-way reversing valve to be open, the second and third ports of the corresponding three-way reversing valves of the indoor unit to be cooled and the water tank to be cooled to be open, and the first and third ports of the three-way reversing valve of the water tank to be cooled to be open, so that the refrigerant enters the outdoor heat exchanger through the main three-way reversing valve, enters the indoor unit to be cooled and the water tank to be cooled through the outdoor heat exchanger for heat exchange, and enters the water tank to be cooled through the corresponding three-way reversing valve of the water tank to be cooled for heat exchange. After heat exchange, the refrigerant merges with the refrigerant that has passed through the outdoor heat exchanger and enters the indoor unit to be cooled and the water tank to be cooled for heat exchange. After heat exchange, the refrigerant returns to the compressor through the corresponding three-way reversing valve of the indoor unit to be cooled and the water tank to be cooled, thus executing the cooling mode, the hot water mode, and the chilled water mode.

15. The method according to claim 1, characterized in that, The target operating modes are heating mode, hot water mode, and cooling water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the indoor unit to be heated, the hot water tank to be heated, and the cool water tank to be cooled; close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be heated, the hot water tank to be heated, and the cool water tank to be cooled. The system controls the second and third ports of the main three-way reversing valve to be open, the second and third ports of the branch three-way reversing valve corresponding to the water tank to be cooled to be open, and the first and third ports of the branch three-way reversing valves of the indoor unit to be heated and the water tank to be heated to be opened, so that the refrigerant enters the indoor unit to be heated and the water tank to be heated through the branch three-way reversing valves of the indoor unit to be heated and the water tank to be heated for heat exchange. After heat exchange, the refrigerant returns to the compressor through the outdoor heat exchanger and enters the water tank to be cooled through the control valve corresponding to the water tank to be cooled for heat exchange. After heat exchange, the refrigerant returns to the compressor through the branch three-way reversing valve corresponding to the water tank to be cooled, thus executing the heating mode, the hot water mode, and the cooling water mode.

16. The method according to claim 1, characterized in that, The target operating modes are cooling mode, heating mode, chilled water mode, and hot water mode; The step of controlling the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and controlling the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so as to enable the refrigerant to exchange heat through the indoor heat exchange unit corresponding to the target operating mode, and executing the target operating mode, includes: Open the control valves corresponding to the indoor unit to be cooled, the indoor unit to be heated, the water tank to be cooled, and the water tank to be heated; close the control valves corresponding to the other indoor heat exchange units in the indoor heat exchange units, except for the indoor unit to be cooled, the indoor unit to be heated, the water tank to be cooled, and the water tank to be heated. If the primary target operating mode is cooling mode, then the first and third ports of the main three-way reversing valve are opened, the second and third ports of the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled are opened, and the first and third ports of the branch three-way reversing valves corresponding to the indoor unit to be heated and the water tank to be heated are opened. This allows the refrigerant to enter the outdoor heat exchanger through the main three-way reversing valve, and then enter the indoor unit to be cooled and the water tank to be cooled through the outdoor heat exchanger for heat exchange. It also enters the indoor unit to be heated and the water tank to be heated through the branch three-way reversing valves corresponding to the indoor unit to be heated and the water tank to be heated for heat exchange. After heat exchange, it merges with the refrigerant passing through the outdoor heat exchanger and enters the indoor unit to be cooled and the water tank to be cooled for heat exchange. Finally, it returns to the compressor through the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be heated, thus executing the cooling mode, the heating mode, the chilled water mode, and the hot water mode. If the primary target operating mode is heating mode, then the second and third ports of the main three-way reversing valve are connected, the second and third ports of the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled are connected, and the first and third ports of the branch three-way reversing valves corresponding to the indoor unit to be heated and the water tank to be heated are connected. This allows the refrigerant to enter the indoor unit to be heated and the water tank to be heated through the branch three-way reversing valve of the indoor unit to be heated for heat exchange. After heat exchange, the refrigerant returns to the compressor through the outdoor heat exchanger, and also enters the indoor unit to be cooled and the water tank to be cooled through the control valves corresponding to the indoor unit to be cooled and the water tank to be cooled for heat exchange. After heat exchange, the refrigerant returns to the compressor through the branch three-way reversing valves corresponding to the indoor unit to be cooled and the water tank to be cooled, thus executing the cooling mode, the heating mode, the chilled water mode, and the hot water mode.

17. The method according to any one of claims 2-16, characterized in that, The second ports of the main three-way reversing valve and each of the branch three-way reversing valves are connected to the compressor via a gas-liquid separator. The method further includes: The second and third ports of the three-way reversing valves corresponding to the other indoor heat exchange units are connected.

18. The method according to claim 1, characterized in that, The water tank is also equipped with a heating device, and the method further includes: If the target operating mode includes a hot water production mode, and the target water temperature in the operating command is greater than the preset maximum water temperature, then when the water temperature in the hot water tank reaches the maximum water temperature, the hot water production mode will be stopped, and the heating device in the hot water tank will be controlled to heat the water until the water temperature in the hot water tank reaches the target water temperature.

19. An air conditioning control device, characterized in that, This device is applied to an air conditioner, which includes multiple indoor heat exchange units, a main three-way reversing valve, and multiple branch three-way reversing valves, each branch three-way reversing valve corresponding to one indoor heat exchange unit. The compressor discharge port is connected to the first port of the main three-way reversing valve and each of the branch three-way reversing valves, the compressor suction port is connected to the second port of the main three-way reversing valve and each of the branch three-way reversing valves, and the third port of the main three-way reversing valve is connected to an outdoor heat exchanger. The third port of each branch three-way reversing valve is connected to its corresponding indoor heat exchange unit, and each indoor heat exchange unit is also connected to the outdoor heat exchanger via a corresponding control valve. Each indoor heat exchange unit includes an indoor unit and a water tank. The device includes: A receiving module is used to receive operating instructions sent by a user; the operating instructions include a target operating mode, and the target operating mode is at least one of cooling mode, heating mode, hot water mode and chilled water mode, and when there are multiple target operating modes, each target operating mode operates simultaneously; The control module is used to control the switching of the main three-way reversing valve and each of the branch three-way reversing valves according to the target operating mode, and to control the opening and closing of the control valves corresponding to each of the indoor heat exchange units, so that the refrigerant can exchange heat through the indoor heat exchange unit corresponding to the target operating mode and execute the target operating mode.

20. An air conditioner, characterized in that, The air conditioner includes multiple indoor heat exchange units, a main three-way reversing valve, and multiple branch three-way reversing valves, each branch three-way reversing valve corresponding to one indoor heat exchange unit. The compressor discharge port is connected to the first port of the main three-way reversing valve and each branch three-way reversing valve, the compressor suction port is connected to the second port of the main three-way reversing valve and each branch three-way reversing valve, and the third port of the main three-way reversing valve is connected to the outdoor heat exchanger. The third port of each branch three-way reversing valve is connected to the corresponding indoor heat exchange unit, and each indoor heat exchange unit is also connected to the outdoor heat exchanger through a corresponding control valve. Each indoor heat exchange unit includes an indoor unit and a water tank. The air conditioner also includes a main controller, which executes a computer program to implement the air conditioning control method according to any one of claims 1-18.

21. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the main controller, it implements the air conditioning control method according to any one of claims 1-18.

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