Multi-split heat recovery multi-split air conditioning system

Abstract

The invention relates to the technical field of household appliances, in particular to a multi-split heat recovery multi-split air conditioning system capable of operating in different working modes, which comprises a controller, after the controller receives a first control command signal, a first target working mode corresponding to the first control command signal is determined from the working modes, and a second target working mode corresponding to the first target working mode is determined from the working modes; and then the mode with the highest energy efficiency in the first target working modes is determined as a second target working mode, and finally a second control instruction signal is generated based on the second target working mode, so that the multi-split heat recovery multi-split air conditioning system executes the second target working mode when receiving the second control instruction signal. According to the multi-split heat recovery multi-split air conditioning system, the working modes conforming to the user instructions can be determined, the corresponding refrigerating function or heating function and / or water heating function can be started, the mode with the high energy efficiency in the working modes conforming to the user instructions can be automatically selected, optimization of the performance and the energy-saving effect can be achieved, and the user experience is improved. Therefore, the intelligent degree is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a one-to-many heat recovery multi-split air-conditioning system. Background Art

[0002] Multi-split central air conditioning is a type of user central air conditioning, commonly known as "one to many", which refers to a primary refrigerant air conditioning system in which one outdoor unit is connected to two or more indoor units through piping, with air-cooled heat exchange on the outdoor side and direct evaporation heat exchange on the indoor side.

[0003] Most existing multi-split systems use excess waste heat from the air-conditioning system to heat the water heater. Although this can effectively save energy and improve energy efficiency, it only controls the on / off of the electric heating device when there is both hot water demand and cooling demand. It fails to fully consider the switching and optimization of other operating modes, and does not comprehensively evaluate the system energy consumption under different operating conditions, resulting in a low level of intelligence. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, the purpose of the present invention is to propose a one-to-many heat recovery multi-split air-conditioning system, which can not only determine the working mode that meets the user's instructions and turn on the corresponding cooling function or heating function and / or hot water function, but also automatically select the more energy-efficient mode among the working modes that meet the user's instructions, which helps to optimize the performance and energy-saving effects, thereby improving the degree of intelligence.

[0006] The embodiment of the present invention proposes a one-to-many heat recovery multi-split air-conditioning system, which can operate in different working modes, wherein the working modes include: cooling mode, heating mode, water tank heating mode, first cooling and water tank heating mode, second cooling and water tank heating mode, heating and water tank heating mode, and one of the heat recovery amount in the first cooling and water tank heating mode is lower than the heat recovery amount in the second cooling and water tank heating mode; the one-to-many heat recovery multi-split air-conditioning system further includes: a controller, which is configured to: receive a first control instruction signal, wherein the first control instruction signal A control command signal includes at least one of a cooling command signal, a heating command signal and a hot water command signal, wherein the cooling command signal and the heating command signal cannot be issued at the same time; a first target operating mode corresponding to the first control command signal is determined, and the mode with the highest energy efficiency among the first target operating modes is determined to be a second target operating mode, wherein the first target operating mode includes at least one of the operating modes; a second control command signal is generated based on the second target operating mode, so that the one-to-many heat recovery multi-split air-conditioning system executes the second target operating mode when receiving the second control command signal.

[0007] The above technical solution has the following advantages or beneficial effects: the one-to-many heat recovery multi-split air-conditioning system that can operate in different working modes provided by an embodiment of the present invention includes a controller. After receiving a first control instruction signal, the controller first determines a first target working mode corresponding to the first control instruction signal from the working mode, and then determines the mode with the highest energy efficiency in the first target working mode as the second target working mode. Finally, based on the second target working mode, a second control instruction signal is generated, so that the one-to-many heat recovery multi-split air-conditioning system executes the second target working mode when receiving the second control instruction signal; the one-to-many heat recovery multi-split air-conditioning system provided by this embodiment of the present invention can not only determine the working mode that meets the user's instructions and turn on the corresponding cooling function or heating function and / or hot water function, but also automatically select the mode with higher energy efficiency in the working mode that meets the user's instructions, which helps to optimize the performance and energy-saving effects, thereby improving the degree of intelligence.

[0008] In addition, the one-to-many heat recovery multi-split air conditioning system according to the embodiment of the present invention may also have the following additional technical features:

[0009] Furthermore, when determining the first target operating mode corresponding to the first control command signal and determining that the mode with the highest energy efficiency in the first target operating mode is the second target operating mode, the controller is configured to: when the first control command signal includes the cooling command signal but does not include the heating command signal and the hot water command signal, determine that the first target operating mode includes the cooling mode, and determine that the cooling mode is the second target operating mode.

[0010] The above technical solution has the following advantages or beneficial effects: according to the one-to-many heat recovery multi-split air-conditioning system provided by an embodiment of the present invention, when the first control command signal includes a cooling command signal but does not include a heating command signal and a hot water command signal, it is determined that the first target working mode includes a cooling mode, and the cooling mode is determined to be the second target working mode, so that the one-to-many heat recovery multi-split air-conditioning system executes the cooling mode; the one-to-many heat recovery multi-split air-conditioning system provided by this embodiment of the present invention can operate the corresponding cooling mode and turn on the corresponding cooling function according to the cooling command issued by the user, and respond quickly and accurately.

[0011] Furthermore, when determining the first target operating mode corresponding to the first control command signal and determining that the mode with the highest energy efficiency in the first target operating mode is the second target operating mode, the controller is configured to: when the first control command signal includes the heating command signal but does not include the cooling command signal and the hot water command signal, determine that the first target operating mode includes the heating mode, and determine that the heating mode is the second target operating mode.

[0012] The above technical solution has the following advantages or beneficial effects: according to the one-to-many heat recovery multi-split air-conditioning system provided by an embodiment of the present invention, when the first control command signal includes a heating command signal but does not include a cooling command signal and a hot water command signal, it is determined that the first target working mode includes a heating mode, and the heating mode is determined to be the second target working mode, so that the one-to-many heat recovery multi-split air-conditioning system executes the heating mode; the one-to-many heat recovery multi-split air-conditioning system provided by this embodiment of the present invention can operate the corresponding heating mode and turn on the corresponding heating function according to the heating command issued by the user, and respond quickly and accurately.

[0013] Furthermore, when determining the first target operating mode corresponding to the first control command signal and determining that the mode with the highest energy efficiency in the first target operating mode is the second target operating mode, the controller is configured to: when the first control command signal includes the hot water command signal but does not include the cooling command signal and the heating command signal, determine that the first target operating mode includes the water tank separate heating mode, and determine that the water tank separate heating mode is the second target operating mode.

[0014] The above technical solution has the following advantages or beneficial effects: according to the one-to-many heat recovery multi-split air-conditioning system provided by an embodiment of the present invention, when the first control command signal includes a hot water command signal but does not include a cooling command signal and a heating command signal, it is determined that the first target working mode includes a water tank separate heating mode, and the water tank separate heating mode is determined as the second target working mode, so that the one-to-many heat recovery multi-split air-conditioning system executes the water tank separate heating mode; the one-to-many heat recovery multi-split air-conditioning system provided by this embodiment of the present invention can operate the corresponding water tank separate heating mode according to the hot water command issued by the user, turn on the corresponding hot water function, and respond quickly and accurately.

[0015] Further, when determining the first target operating mode corresponding to the first control command signal and determining that the mode with the highest energy efficiency in the first target operating mode is the second target operating mode, the controller is configured to: when the first control command signal includes the cooling command signal and the hot water command signal, but does not include the heating command signal, determine that the first target operating mode includes the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode, and determine that the mode with the highest energy efficiency in the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode is the second target operating mode; or, when the first control command signal includes the cooling command signal and the hot water command signal, but does not include the heating command signal, determine that the first target operating mode includes the cooling mode and the second cooling and water tank heating mode, and determine that the mode with the highest energy efficiency in the cooling mode and the second cooling and water tank heating mode is the second target operating mode.

[0016] The above technical solution has the following advantages or beneficial effects: according to the one-to-many heat recovery multi-split air-conditioning system provided by the embodiment of the present invention, when the first control command signal includes a cooling command signal and a hot water command signal, but does not include a heating command signal, it is determined that the first target working mode includes a cooling mode, a first cooling and water tank heating mode, and a second cooling and water tank heating mode, and the mode with the highest energy efficiency among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode is determined as the second target working mode, so that the one-to-many heat recovery multi-split air-conditioning system executes the mode with the highest energy efficiency among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode; the one-to-many heat recovery multi-split air-conditioning system provided by the embodiment of the present invention can not only determine the working mode that meets the user's instructions and turn on the corresponding cooling function and hot water function, but also automatically select the mode with higher energy efficiency among the working modes that meet the user's instructions, which helps to optimize the performance and energy-saving effects, thereby improving the degree of intelligence.

[0017] Alternatively, when the first control instruction signal includes a cooling instruction signal and a hot water instruction signal, but does not include a heating instruction signal, it is determined that the first target working mode includes a cooling mode and a second cooling and water tank heating mode, and the mode with the highest energy efficiency in the cooling mode and the second cooling and water tank heating mode is determined to be the second target working mode, so that the one-to-many heat recovery multi-split air-conditioning system executes the mode with the highest energy efficiency in the cooling mode and the second cooling and water tank heating mode; the one-to-many heat recovery multi-split air-conditioning system provided by this embodiment of the present invention can not only determine the working mode that meets the user's instructions and turn on the corresponding cooling function and hot water function, but also automatically select the mode with higher energy efficiency in the working mode that meets the user's instructions, and at the same time can simplify the control process, reduce computing pressure, improve control efficiency, and help to optimize performance and energy-saving effects, thereby improving the degree of intelligence.

[0018] Further, when determining that the mode with the highest energy efficiency among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode is the second target operating mode, the controller is configured to: determine, according to an instantaneous target or a non-instantaneous target, the mode with the highest energy efficiency among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode as the second target operating mode; wherein the instantaneous target includes the cooling capacity corresponding to each mode; the controller is configured to: if the cooling capacity of the cooling mode meets the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode meets the target cooling demand, determine that the mode with the highest energy efficiency among the first cooling and water tank heating mode and the second cooling and water tank heating mode is the second target operating mode; if the cooling capacity of the cooling mode meets the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode does not meet the target cooling demand, determine that the mode with the highest energy efficiency among the cooling mode and the first cooling and water tank heating mode is the second target operating mode; If the cooling capacity of the refrigeration mode does not meet the target cooling demand, and the cooling capacity of the second refrigeration and water tank heating mode meets the target cooling demand, then the mode with the highest energy efficiency among the first refrigeration and water tank heating mode and the second refrigeration and water tank heating mode is determined to be the second target operating mode; if the cooling capacity of the refrigeration mode does not meet the target cooling demand, and the cooling capacity of the second refrigeration and water tank heating mode does not meet the target cooling demand, then the mode with the largest cooling capacity among the refrigeration mode, the first refrigeration and water tank heating mode and the second refrigeration and water tank heating mode is determined to be the second target operating mode; the non-instantaneous target includes the predicted energy efficiency corresponding to each mode; the controller is configured to: use a preset state prediction model to determine the first predicted energy efficiency corresponding to the refrigeration mode, the second predicted energy efficiency corresponding to the first refrigeration and water tank heating mode, and the third predicted energy efficiency corresponding to the second refrigeration and water tank heating mode, and determine the mode corresponding to the highest energy efficiency among the first predicted energy efficiency, the second predicted energy efficiency and the third predicted energy efficiency as the second target operating mode.

[0019] The above technical solution has the following advantages or beneficial effects: according to the one-to-many heat recovery multi-split air-conditioning system provided by the embodiment of the present invention, the controller determines the most energy-efficient mode among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode as the second target working mode according to the instantaneous target or the non-instantaneous target; thereby ensuring that the system operating state is accurately adjusted according to user needs under different environmental conditions to maximize energy efficiency and reduce energy consumption. By comparing and selecting different modes, the system can dynamically adapt to changing usage conditions, taking into account both short-term immediate energy efficiency and long-term economy.

[0020] Furthermore, when determining that the mode with the highest energy efficiency among the cooling mode and the second cooling and water tank heating mode is the second target operating mode, the controller is configured to: if the cooling capacity of the cooling mode meets the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode meets the target cooling demand, then determine that the mode with the highest energy efficiency among the cooling mode and the second cooling and water tank heating mode is the second target operating mode; if the cooling capacity of the cooling mode meets the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode does not meet the target cooling demand, then determine that the cooling mode and the second cooling mode are the second target operating mode. and the water tank heating mode with the largest cooling capacity is the second target operating mode; if the cooling capacity of the refrigeration mode does not meet the target cooling demand, and the cooling capacity of the second refrigeration and water tank heating mode meets the target cooling demand, then the mode with the largest cooling capacity among the refrigeration mode and the second refrigeration and water tank heating mode is determined to be the second target operating mode; if the cooling capacity of the refrigeration mode does not meet the target cooling demand, and the cooling capacity of the second refrigeration and water tank heating mode does not meet the target cooling demand, then the mode with the largest cooling capacity among the refrigeration mode and the second refrigeration and water tank heating mode is determined to be the second target operating mode.

[0021] The above technical solution has the following advantages or beneficial effects: according to the one-to-many heat recovery multi-split air-conditioning system provided by the embodiment of the present invention, the controller determines the most energy-efficient mode among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode as the second target working mode based on the instantaneous target; thereby ensuring that the system operating state is accurately adjusted according to user needs under different environmental conditions to maximize energy efficiency and reduce energy consumption. By comparing and selecting different modes, the system can dynamically adapt to changing usage conditions.

[0022] Further, when determining the first target operating mode corresponding to the first control command signal and determining that the mode with the highest energy efficiency in the first target operating mode is the second target operating mode, the controller is configured to: when the first control command signal includes the heating command signal and the hot water command signal, but does not include the cooling command signal, determine that the first target operating mode includes the heating mode and the heating and water tank heating mode, and determine that the mode with the highest energy efficiency in the heating mode and the heating and water tank heating mode is the second target operating mode; or, when the first control command signal includes the heating command signal and the hot water command signal, but does not include the cooling command signal, determine that the first target operating mode includes the heating mode, and determine that the heating mode is the second target operating mode.

[0023] The above technical solution has the following advantages or beneficial effects: according to the one-to-many heat recovery multi-split air-conditioning system provided by the embodiment of the present invention, when the first control command signal includes a heating command signal and a hot water command signal, but does not include a cooling command signal, it is determined that the first target working mode includes a heating mode and a heating and water tank heating mode, and the mode with the highest energy efficiency among the heating mode and the heating and water tank heating mode is determined as the second target working mode, so that the one-to-many heat recovery multi-split air-conditioning system executes the mode with the highest energy efficiency among the heating mode and the heating and water tank heating mode; the one-to-many heat recovery multi-split air-conditioning system provided by this embodiment of the present invention can not only determine the working mode that meets the user's instructions and turn on the corresponding heating function and hot water function, but also automatically select the mode with higher energy efficiency among the working modes that meet the user's instructions, which helps to optimize the performance and energy-saving effects, thereby improving the degree of intelligence.

[0024] Alternatively, when the first control command signal includes a heating command signal and a hot water command signal, but does not include a cooling command signal, it is determined that the first target working mode includes a heating mode, and the heating mode is determined to be the second target working mode, so that the one-to-many heat recovery multi-split air-conditioning system executes the heating mode; the one-to-many heat recovery multi-split air-conditioning system provided by this embodiment of the present invention can not only determine the working mode that meets the user's instructions and turn on the corresponding heating function and hot water function, but also simplify the control process, reduce computing pressure, and improve control efficiency.

[0025] Furthermore, when determining that the most energy-efficient mode among the heating mode and the heating and water tank heating modes is the second target operating mode, the controller is configured to: obtain the current ambient temperature and the current water temperature of the water tank; based on a preset temperature-mode mapping relationship table, obtain a third target operating mode corresponding to the current ambient temperature and the current water temperature, wherein the temperature-mode mapping relationship table includes the corresponding mapping relationship between ambient temperature, water temperature and operating mode; and determine that the third target operating mode is the second target operating mode.

[0026] The above technical solution has the following advantages or beneficial effects: According to the one-to-many heat recovery multi-split air-conditioning system provided by an embodiment of the present invention, the controller first obtains the current ambient temperature and the current water temperature of the water tank, and then obtains the third target operating mode corresponding to the current ambient temperature and the current water temperature based on the preset temperature-mode mapping relationship table, and finally determines the third target operating mode as the second target operating mode, thereby determining the heating mode and the most energy-efficient mode among the heating and water tank heating modes as the second target operating mode; in this way, the mode selection can be guided intuitively and quickly, thereby improving control efficiency.

[0027] Furthermore, the hot water command signal includes a first hot water command signal and a second hot water command signal, wherein the first hot water command signal and the second hot water command signal cannot be issued at the same time, and the heating efficiency of the working mode corresponding to the first hot water command signal is higher than or equal to the heating efficiency of the working mode corresponding to the second hot water command signal.

[0028] The above technical solution has the following advantages or beneficial effects: according to the one-to-many heat recovery multi-split air-conditioning system provided by an embodiment of the present invention, the hot water command signal includes a first hot water command signal and a second hot water command signal, the first hot water command signal and the second hot water command signal cannot be issued at the same time, and the heating efficiency of the working mode corresponding to the first hot water command signal is higher than or equal to the heating efficiency of the working mode corresponding to the second hot water command signal; in this way, different water heating methods can be selected according to the situation, thereby taking into account both hot water efficiency and energy-saving effects.

[0029] Furthermore, the controller is also configured to: when receiving the first control instruction signal, and the first control instruction signal includes a first hot water instruction signal, control the electric heating device to heat the water in the hot water system in response to the first hot water instruction signal.

[0030] The above technical solution has the following advantages or beneficial effects: According to the one-to-many heat recovery multi-split air-conditioning system provided by an embodiment of the present invention, when the controller receives a first control command signal, and the first control command signal includes a first hot water command signal, in response to the first hot water command signal, the electric heating device is controlled to heat the water in the hot water system, thereby ensuring hot water efficiency.

[0031] Further, the controller is configured to: when the first control instruction signal is received, and the first control instruction signal includes a second hot water instruction signal, and the second target operating mode determined based on the first control instruction signal is one of the water tank heating mode, the first cooling and water tank heating mode, the second cooling and water tank heating mode, and the heating and water tank heating mode, control the electric heating device not to heat the water in the hot water system.

[0032] The above technical solution has the following advantages or beneficial effects: According to the one-to-many heat recovery multi-split air-conditioning system provided by an embodiment of the present invention, when the controller receives a first control command signal, and the first control command signal includes a second hot water command signal, and the second target operating mode determined based on the first control command signal is one of the water tank heating mode, the first cooling and water tank heating mode, the second cooling and water tank heating mode, and the heating and water tank heating mode, the electric heating device is controlled not to heat the water in the hot water system, thereby ensuring the hot water energy efficiency.

[0033] Furthermore, the controller is configured to: when the first control instruction signal is received, and the first control instruction signal includes a second hot water instruction signal, and the second target operating mode determined based on the first control instruction signal is one of the cooling mode and the heating mode, control the electric heating device to heat the water in the hot water system.

[0034] The above technical solution has the following advantages or beneficial effects: According to the one-to-many heat recovery multi-split air-conditioning system provided by an embodiment of the present invention, when the controller receives a first control command signal, and the first control command signal includes a second hot water command signal, and the second target operating mode determined based on the first control command signal is one of the cooling mode and the heating mode, the electric heating device is controlled to heat the water in the hot water system to ensure the hot water efficiency.

[0035] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0037] Figure 1 2. It is a structural diagram of a one-to-many heat recovery multi-split air conditioning system according to an embodiment of the present invention;

[0038] Figure 2 This is a schematic diagram of the specific structure of a one-to-many heat recovery multi-split air conditioning system according to an embodiment of the present invention;

[0039] Figure 3 is a schematic structural diagram of a hot water system according to an embodiment of the present invention;

[0040] Figure 4 is a schematic diagram of the hardware structure of a controller according to a specific embodiment of the present invention;

[0041] Figure 5 is a structural diagram of an air conditioning system according to a specific embodiment of the present invention;

[0042] Figure 6 is a structural diagram of a refrigeration system of an air-conditioning system according to a specific embodiment of the present invention;

[0043] Figure 7 is a schematic structural diagram of an adjustment unit according to an embodiment of the present invention;

[0044] Figure 8 is a schematic diagram of refrigerant flow in a cooling mode according to an embodiment of the present invention;

[0045] Figure 9 is a schematic diagram of refrigerant flow in a heating mode according to an embodiment of the present invention;

[0046] Figure 10 is a schematic diagram of refrigerant flow in a water tank heating mode according to an embodiment of the present invention;

[0047] Figure 11 is a schematic diagram of refrigerant flow in a first cooling and water tank heating mode according to an embodiment of the present invention;

[0048] Figure 12 is a schematic diagram of refrigerant flow in a second cooling and water tank heating mode according to an embodiment of the present invention;

[0049] Figure 13 is a schematic diagram of refrigerant flow in heating and water tank heating modes according to one embodiment of the present invention;

[0050] Figure 14 is a structural diagram of a hot water system according to a specific embodiment of the present invention;

[0051] Figure 15 This is a control flow chart of a one-to-many heat recovery multi-split air conditioning system according to an embodiment of the present invention;

[0052] Figure 16 This is an overall control flow chart of a one-to-many heat recovery multi-split air conditioning system according to an embodiment of the present invention;

[0053] Figure 17 This is a first simplified control flow chart of a one-to-many heat recovery multi-split air conditioning system according to an embodiment of the present invention;

[0054] Figure 18 is a temperature-mode mapping relationship table according to an embodiment of the present invention;

[0055] Figure 19 is a second simplified control flow chart of a one-to-many heat recovery multi-split air conditioning system according to an embodiment of the present invention;

[0056] Figure 20 The present invention is a hot water control flow chart of a one-to-many heat recovery multi-split air conditioning system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0057] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0058] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0059] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0060] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0061] Reference below Figures 1-20 A one-to-many heat recovery multi-split air conditioning system according to an embodiment of the present invention is described.

[0062] First, combine Figures 1-14 The relevant structure of the one-to-many heat recovery multi-split air conditioning system 100 involved in an embodiment of the present invention is described.

[0063] Figure 1 Schematic diagram of a one-to-many heat recovery multi-split air conditioning system according to an embodiment of the present invention. Figure 1 As shown, an embodiment of the present invention provides a one-to-many heat recovery multi-split air conditioning system 100, including: an air conditioning system 110, a hot water system 120, a regulating unit 130 and a controller 71.

[0064] Figure 2 1 is a schematic diagram of the specific structure of a one-to-many heat recovery multi-split air conditioning system according to an embodiment of the present invention. Figure 2As shown, in one embodiment of the present invention, the air-conditioning system 110 includes: a refrigerant circulation loop, so that the refrigerant performs a refrigeration cycle in a loop composed of a compressor 1, an outdoor heat exchanger 2, an outdoor expansion valve 3, an expansion valve group, an indoor heat exchanger group, a stop valve group, and a four-way valve 4, wherein the indoor heat exchanger group includes a plurality of indoor heat exchangers 5 connected in parallel.

[0065] In a specific embodiment, the air conditioning system 110 is a one-to-many air conditioning system. The air conditioning system 110 includes a refrigerant circulation circuit. The refrigerant circulation circuit allows the refrigerant to refrigerate in a circuit consisting of a compressor 1, an outdoor heat exchanger 2, an outdoor expansion valve 3, an expansion valve group, an indoor heat exchanger group, a stop valve group, and a four-way valve 4. The indoor heat exchanger group includes a plurality of indoor heat exchangers 5 connected in parallel. The number of indoor heat exchanger groups corresponds to the number of expansion valve groups, indoor heat exchanger groups, and stop valve groups. For example, Figure 2 The middle indoor heat exchanger group includes three indoor heat exchangers connected in parallel.

[0066] Figure 3 FIG. 1 is a schematic diagram of a hot water system according to an embodiment of the present invention. Figure 2 and Figure 3 As shown, in one embodiment of the present invention, the hot water system 120 is connected to the air-conditioning system 110, and the hot water system 120 includes: a water tank 20; a water tank heat exchanger 21, which is arranged in the water tank 20; a water tank branch, the water tank heat exchanger 21 is connected to the refrigerant circulation loop through the water tank branch, and the water tank branch includes: a first water tank branch and a second water tank branch; wherein, one end of the first water tank branch is connected to the outlet of the compressor 1, the other end of the first water tank branch is connected to one end of the water tank heat exchanger 21, one end of the second water tank branch is connected to the other end of the water tank heat exchanger 21, and the other end of the second water tank branch is connected to one end of the expansion valve group and one end of the outdoor expansion valve 3; when the water tank heat exchanger 21 is used as a condenser, the refrigerant in the refrigerant circulation loop can flow through the water tank heat exchanger 21 through the water tank branch for heat exchange, so that the water tank heat exchanger 21 heats the water in the water tank 20.

[0067] In a specific embodiment, the hot water system 120 includes a water tank 20 and a water tank heat exchanger 21 arranged on the water tank 20. The water tank heat exchanger 21 is, for example, wrapped around the water tank 20. The water tank heat exchanger 21 is connected to the refrigerant circulation loop through a water tank branch. The water tank branch includes a first water tank branch and a second water tank branch. The two ends of the first water tank branch are respectively connected to the outlet of the compressor 1 and the inlet of the water tank heat exchanger 21. The two ends of the second water tank branch are respectively connected to the outlet of the water tank heat exchanger 21 and the expansion valve group and the outdoor expansion valve 3.

[0068] In a specific embodiment, the water tank heat exchanger 21 can be used as a condenser, and the refrigerant in the refrigerant circulation loop flows through the water tank heat exchanger 21 through the water tank branch for heat exchange, so that the water tank heat exchanger 21 heats the water in the water tank 20.

[0069] In one embodiment of the present invention, the regulating unit 130 is connected to the refrigerant circulation loop and the water tank branch, respectively. The regulating unit 130 is used to adjust the on-off state between the refrigerant circulation loop and the water tank branch, and to adjust the on-off state between the outdoor heat exchanger 2 and the indoor heat exchanger group in the refrigerant circulation loop.

[0070] In a specific embodiment, the regulating unit 130 includes, for example, multiple solenoid valves, and the regulating unit 130 can adjust the on-off state between the refrigerant circulation loop and the water tank branch, as well as adjust the on-off state between the outdoor heat exchanger 2 and the indoor heat exchanger group in the refrigerant circulation loop.

[0071] In one embodiment of the present invention, the controller 71 is connected to the air-conditioning system 110 and the regulating unit 130, respectively. The controller 71 is configured to: respond to control instructions, control the one-to-many heat recovery multi-split air-conditioning system 100 to operate in different working modes, and in different working modes, control the status of each component in the regulating unit 130, thereby adjusting the on-off state between the refrigerant circulation loop and the water tank branch, and adjusting the on-off state between the outdoor heat exchanger 2 and the indoor heat exchanger group in the refrigerant circulation loop, so that the refrigerant that does not participate in heat exchange in the refrigerant circulation loop and / or the water tank branch flows back to the compressor 1 based on the pressure difference between the flow path and the inlet of the compressor 1.

[0072] In a specific embodiment, the operator can send control instructions through the terminal to enable the controller 71 to control the one-to-many heat recovery multi-split air-conditioning system 100 to operate in different working modes, wherein the working modes include, for example: cooling mode, heating mode, water tank separate heating mode, first cooling and water tank heating mode, second cooling and water tank heating mode, heating and water tank heating mode, and one of the modes, and the heat recovery amount in the first cooling and water tank heating mode is lower than the heat recovery amount in the second cooling and water tank heating mode, that is, the first cooling and water tank heating mode is an incomplete heat recovery mode, with lower thermal efficiency but more energy-saving, and the second cooling and water tank heating mode is a complete heat recovery mode, with higher thermal efficiency but no energy-saving.

[0073] In a specific embodiment, the controller 71 controls the status of each component in the regulating unit 130 in different working modes, thereby adjusting the on-off status between the refrigerant circulation loop and the water tank branch, and adjusting the on-off status between the outdoor heat exchanger 2 and the indoor heat exchanger group in the refrigerant circulation loop, so that the refrigerant that does not participate in heat exchange in the refrigerant circulation loop and / or the water tank branch flows back to the compressor 1 based on the pressure difference between the flow path and the inlet of the compressor 1, thereby avoiding refrigerant retention and ensuring the refrigerant quantity during the operation of the air-conditioning system 110, thereby helping to improve the cooling efficiency of the air-conditioning system 110.

[0074] Specifically, a one-to-many heat recovery multi-split air-conditioning system 100 provided according to an embodiment of the present invention includes an interconnected air-conditioning system 110, a hot water system 120, a regulating unit 130, and a controller 71. The hot water system 120 can be used as a condenser. The controller 71 controls the one-to-many heat recovery multi-split air-conditioning system 100 to operate in different operating modes in response to control instructions, thereby enriching the operating modes of the one-to-many heat recovery multi-split air-conditioning system 100 and improving intelligence. At the same time, the controller 71 controls the status of each component in the regulating unit 130 in different operating modes, thereby adjusting the on-off state between the refrigerant circulation loop and the water tank branch, and adjusting the on-off state between the outdoor heat exchanger 2 and the indoor heat exchanger group in the refrigerant circulation loop, so that the refrigerant that does not participate in heat exchange in the refrigerant circulation loop and / or the water tank branch flows back to the compressor 1 based on the pressure difference between the flow path and the inlet of the compressor 1. This can avoid refrigerant retention, ensure the refrigerant amount during operation of the air-conditioning system 110, and thus help improve the cooling efficiency of the air-conditioning system 110.

[0075] In a specific embodiment, the controller 71 is a device that can generate an operation control signal based on an instruction opcode and a timing signal, thereby instructing the electrical device 10 to execute the control instruction. For example, in response to a power-on or power-off instruction received from a user, the controller 71 can execute an operation related to the object selected by the power-on or power-off instruction.

[0076] Figure 4 FIG. 1 is a schematic diagram of the hardware structure of a controller according to a specific embodiment of the present invention. Figure 4 As shown, in a specific embodiment of the present invention, the controller 71 includes a processor 83, and optionally, a memory 82 and a communication interface 84 connected to the processor 83. The processor 83, the memory 82 and the communication interface 84 are connected via a bus 81.

[0077] The processor 83 may be a central processing unit (CPU), a general-purpose processor (GP), a network processor (NP), a digital signal processor (DSP), a microprocessor (MCU), a microcontroller (MCU), a programmable logic device (PLD), or any combination thereof. The processor 83 may also be any other device having processing functionality, such as a circuit, a device, or a software module. The processor 83 may also include multiple CPUs, and the processor 83 may be a single-core (single CPU) processor 83 or a multi-core (multi CPU) processor 83. The processor 83 herein may refer to one or more devices, circuits, or processing cores for processing data (e.g., computer program instructions).

[0078] The memory 82 can be a read-only memory 82 (ROM) or other types of static storage devices that can store static information and instructions, a random access memory 82 (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory 82 (EEPROM), a compact disc read-only memory (CDROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer. The embodiment of the present invention does not impose any restrictions on this. The memory 82 can exist independently or be integrated with the processor 83. Among them, the memory 82 can contain computer program code. The processor 83 is used to execute the computer program code stored in the memory 82, thereby realizing the control method of the electrical device provided in the embodiment of the present invention.

[0079] The communication interface 84 can be used to communicate with other devices or communication networks (such as Ethernet, radio access network (RAN), wireless local area network (WLAN), etc.). The communication interface 84 can be a module, a circuit, a transceiver or any device that can achieve communication.

[0080] The bus 81 may be a peripheral component interconnect (PCI) bus 81 or an extended industry standard architecture (EISA) bus 81. The bus 81 may be divided into an address bus 81, a data bus 81, a control bus 81, etc. For ease of representation, Figure 4 Only one thick line is used in the figure, but it does not mean that there is only one bus 81 or one type of bus 81.

[0081] Figure 5 FIG. 1 is a schematic diagram of the structure of an air conditioning system according to a specific embodiment of the present invention. Figure 5 As shown, in a specific embodiment of the present invention, the air-conditioning system includes a refrigeration system for exchanging heat with indoor air to meet cooling or heating needs.

[0082] Figure 6 FIG. 1 is a schematic diagram of the structure of the refrigeration system of the air-conditioning system according to a specific embodiment of the present invention. Figure 6 As shown, in a specific embodiment of the present invention, the refrigeration system includes a compressor, a condenser, an electronic expansion valve, and an evaporator. The air conditioning system in this specific embodiment of the present invention utilizes the compressor, condenser, electronic expansion valve, and evaporator to perform a refrigeration cycle of the air conditioning system. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0083] The compressor compresses high-temperature, high-pressure refrigerant gas and discharges the compressed gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, releasing heat into the surrounding environment through the condensation process.

[0084] The electronic expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the electronic expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor.

[0085] The evaporator can achieve a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. Throughout the entire cycle, the air conditioning system can adjust the temperature of the indoor space.

[0086] The outdoor unit 2 of the air conditioning system refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit 1 of the air conditioning system includes an indoor heat exchanger, and an electronic expansion valve may be provided in the indoor unit 1 or the outdoor unit 2 .

[0087] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioning system functions as a heater in heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioning system functions as a cooler in cooling mode.

[0088] The air conditioning system in the specific embodiment of the present invention includes multiple indoor units 1 and an outdoor unit 2. The indoor units 1 and outdoor units 2 can be configured as an integrated unit or a split unit. The indoor unit 1 can be configured as a wall-mounted unit, a ceiling unit, a duct unit, etc., and the indoor unit 1 is installed at the top or ceiling of the indoor room.

[0089] Reference Figure 6 Taking an indoor hanging machine as an example, an indoor hanging machine is usually installed at a location such as an indoor wall. For another example, an indoor cabinet machine (not shown in the figure) is also a form of the indoor machine 1 .

[0090] Taking a split unit as an example, the air conditioning system includes multiple indoor units 1 and one outdoor unit 2, wherein the outdoor unit 2 is usually set outdoors for heat exchange with the indoor environment.

[0091] In addition, if Figure 6 As shown in the figure, the air conditioning system includes a controller to control the operation of various components within the air conditioning system, thereby enabling the various components to operate and achieve the system's predetermined functions. The air conditioning system also includes a control device 200. For example, the control device 200 is specifically configured as a remote control that communicates with the controller using, for example, infrared or other communication methods. The remote control allows the user to control various aspects of the air conditioning system, enabling interaction between the user and the system.

[0092] The indoor unit 1 of the air-conditioning system in the specific embodiment of the present invention is arranged at the top or upper part of the room. Generally speaking, the installation height of the indoor unit 1 is higher than the user activity area. The indoor unit 1 includes a return air inlet and an air outlet connected to the room. The indoor air passes through the indoor unit 1 in the return air inlet and flows back to the room through the air outlet.

[0093] The refrigerant circulation circuit in this embodiment of the present invention circulates refrigerant through a loop consisting of a compressor, condenser, electronic expansion valve, and evaporator. One of the condenser and evaporator functions as an outdoor heat exchanger, while the other functions as an indoor heat exchanger. The indoor heat exchanger exchanges heat with the air in indoor unit 1, while the outdoor unit 2 heat exchanger exchanges heat with the air in outdoor unit 2, thereby achieving the cooling or heating requirements of the air conditioning system.

[0094] The indoor unit 1 also includes an indoor fan, which is arranged near the return air port or the air outlet of the indoor heat exchanger and is used to deliver the heat-exchanged air into the room. The indoor fan includes multiple gears for changing the outlet air flow speed of the outlet.

[0095] An air guide plate is provided at the position of the air outlet. The air guide plate adjusts the outflow direction of the air flowing through the air outlet by changing the relative rotation angle between the air guide plate and the air outlet, thereby affecting the indoor air temperature stratification.

[0096] In the specific embodiment shown in the present invention, the air conditioning system further includes a controller, which is configured as the controller 71 described in any one of the above embodiments, for example.

[0097] like Figure 2 As shown, in one embodiment of the present invention, the first interface of the four-way valve 4 is connected to the outlet of the compressor 1, the second interface of the four-way valve 4 is connected to the outdoor heat exchanger 2, the third interface of the four-way valve 4 is connected to the indoor heat exchanger group, and the fourth interface of the four-way valve 4 is connected to the inlet of the compressor 1; the expansion valve group includes: a plurality of first expansion valves 6 connected in parallel, one end of each first expansion valve 6 is connected to one end of the outdoor expansion valve 3, and the other end of each first expansion valve 6 is connected to one end of the corresponding indoor heat exchanger 5; the stop valve group includes: a plurality of first stop valves 7 connected in parallel, one end of each first stop valve 7 is connected to the third interface, and the other end of each first stop valve 7 is connected to the other end of the corresponding indoor heat exchanger 5; a plurality of second stop valves 8 connected in parallel, one end of each second stop valve 8 is connected to one end of the corresponding indoor heat exchanger 5, and the other end of each second stop valve 8 is connected to the other end of the corresponding first expansion valve 6.

[0098] In a specific embodiment, the first interface of the four-way valve 4 (ie Figure 2 The upper interface of the four-way valve 4 is connected to the outlet of the compressor 1, and the second interface of the four-way valve 4 (i.e. Figure 2 The right side interface of the four-way valve 4) is connected to the outdoor heat exchanger 2, and the third interface of the four-way valve 4 (i.e. Figure 2 The left side interface of the four-way valve 4) is connected to the indoor heat exchanger group, and the fourth interface of the four-way valve 4 (i.e. Figure 2 The lower interface of the middle four-way valve 4 is connected to the inlet of the compressor 1.

[0099] In a specific embodiment, the expansion valve group includes: a plurality of first expansion valves 6 connected in parallel, and both ends of each first expansion valve 6 are connected to the outdoor expansion valve 3 and the corresponding indoor heat exchanger 5 respectively.

[0100] In a specific embodiment, the stop valve group includes: a plurality of first stop valves 7 connected in parallel with each other and a plurality of second stop valves 8 connected in parallel with each other, the two ends of each first stop valve 7 are respectively connected to the third interface and the corresponding indoor heat exchanger 5, and the two ends of each second stop valve 8 are respectively connected to the corresponding indoor heat exchanger 5 and the corresponding first expansion valve 6.

[0101] Specifically, the one-to-many heat recovery multi-split air-conditioning system 100 provided according to an embodiment of the present invention can adjust the refrigerant flow into or out of the indoor heat exchanger group through the expansion valve group, and control the inflow on-off state and outflow on-off state of the indoor heat exchanger group through the shut-off valve group, thereby facilitating the control of the one-to-many heat recovery multi-split air-conditioning system 100.

[0102] Figure 7 FIG. 1 is a schematic diagram of the structure of an adjustment unit according to an embodiment of the present invention. Figure 7 As shown, in one embodiment of the present invention, the regulating unit 130 includes: a first switch component 131, one end of the first switch component 131 is connected to the outlet of the compressor 1, and the other end of the first switch component 131 is connected to the first interface, and the first switch component 131 is used to control the on-off state between the outlet of the compressor 1 and the refrigerant circulation loop; a second switch component 132, which is arranged on the first water tank branch, one end of the second switch component 132 is connected to the outlet of the compressor 1, and the other end of the second switch component 132 is connected to one end of the water tank heat exchanger 21, and the second switch component 132 is used to control the on-off state between the first water tank branch and the refrigerant circulation loop; a first throttling control component 133, one end of the first throttling control component 133 is connected to the first water tank branch, and the other end of the first throttling control component 133 is connected to the inlet of the compressor 1 and the fourth interface, and the first throttling control component 133 is used to make the refrigerant in the water tank branch flow back or not flow back to the compressor 1 through its own on-off state; a second throttling control component 134, the second throttling control One end of the component 134 is connected to the refrigerant circulation loop, and the other end of the second throttling control component 134 is connected to the inlet of the compressor 1 and the fourth interface. The second throttling control component 134 is used to make the refrigerant in the outdoor heat exchanger 2 and / or the indoor heat exchanger group reflux or not reflux to the compressor 1 through its own on-off state; the flow regulating component 135 is arranged on the road of the second water tank 20, one end of the flow regulating component 135 is connected to the other end of the water tank heat exchanger 21, and the other end of the flow regulating component 135 is connected to the expansion valve One end of the group and one end of the outdoor expansion valve 3, the flow regulating component 135 is used to regulate the refrigerant flow out of the water tank heat exchanger 21; the third switch component 136, one end of the third switch component 136 is connected to one end of the outdoor expansion valve 3, and the other end of the third switch component 136 is connected to one end of the expansion valve group and one end of the flow regulating component 135. The third switch component 136 is used to control the on-off state between the indoor heat exchanger group and the outdoor heat exchanger 2, as well as the on-end state between the second water tank branch and the outdoor heat exchanger 2.

[0103] In a specific embodiment, the first switch component 131 is, for example, Figure 2The gas shut-off valve 9 in the first switch assembly 131 has two ends connected to the outlet of the compressor 1 and the first interface respectively. The first switch assembly 131 is used to control the on-off state between the outlet of the compressor 1 and the refrigerant circulation circuit.

[0104] In a specific embodiment, the second switch component 132 is, for example, Figure 2 The first solenoid valve 10 and the third stop valve 11, the two ends of the second switch component 132 are respectively connected to the outlet of the compressor 1 and the water tank heat exchanger 21, and the second switch component 132 is used to control the on-off state between the first water tank branch and the refrigerant circulation loop.

[0105] In a specific embodiment, the first throttle control component 133 is, for example, Figure 2 The first capillary tube 12 and the second solenoid valve 13, the two ends of the first throttling control component 133 are respectively connected to the first water tank branch and the inlet and the fourth interface of the compressor 1. The first throttling control component 133 is used to make the refrigerant in the water tank branch flow back or not flow back to the compressor 1 through its own on-off state.

[0106] In a specific embodiment, the second throttle control component 134 is, for example, Figure 2 The second capillary tube 14 and the third solenoid valve 15 in the device, the two ends of the second throttling control component 134 are respectively connected to the refrigerant circulation loop and the inlet and the fourth interface of the compressor 1. The second throttling control component 134 is used to make the refrigerant in the outdoor heat exchanger 2 and / or the indoor heat exchanger group return or not return to the compressor 1 through its own on-off state.

[0107] In a specific embodiment, the flow regulating component 135 is, for example, Figure 2 The second expansion valve 16 and the fourth stop valve 17, the two ends of the flow regulating component 135 are respectively connected to the water tank heat exchanger 21 and the expansion valve group and the outdoor expansion valve 3, and the flow regulating component 135 is used to regulate the refrigerant flow out of the water tank heat exchanger 21.

[0108] In a specific embodiment, the third switch component 136 is, for example, Figure 2 The liquid stop valve 18 in the third switch assembly 136 has its two ends respectively connected to the outdoor expansion valve 3 and the expansion valve group and the flow regulating assembly 135. The third switch assembly 136 is used to control the on-off state between the indoor heat exchanger group and the outdoor heat exchanger 2, as well as to control the on-end state between the second water tank branch and the outdoor heat exchanger 2.

[0109] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention, through the cooperation of the first switch component 131, the second switch component 132, the first throttling control component 133, the second throttling control component 134, the flow regulating component 135 and the third switch component 136, the regulating unit 130 can adjust the on-off state between the refrigerant circulation loop and the water tank branch, and adjust the on-off state between the outdoor heat exchanger 2 and the indoor heat exchanger group in the refrigerant circulation loop, thereby facilitating the control of the one-to-many heat recovery multi-split air-conditioning system 100.

[0110] like Figure 2 As shown, in one embodiment of the present invention, the first switch assembly 131 includes: a gas stop valve 9, one end of the gas stop valve 9 is connected to the outlet of the compressor 1, and the other end of the gas stop valve 9 is connected to the first interface.

[0111] In a specific embodiment, the first switch assembly 131 includes Figure 2 The gas stop valve 9 has one end connected to the outlet of the compressor 1 and the other end connected to the first interface.

[0112] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention, the first switch component 131 includes a gas shut-off valve 9, which can control the on-off state between the outlet of the compressor 1 and the refrigerant circulation circuit.

[0113] like Figure 2 As shown, in one embodiment of the present invention, the second switch assembly 132 includes: a first solenoid valve 10 and a third stop valve 11 connected in series on the first water tank branch, wherein one end of the first solenoid valve 10 is connected to the outlet of the compressor 1, the other end of the first solenoid valve 10 is connected to one end of the third stop valve 11, and the other end of the third stop valve 11 is connected to one end of the water tank heat exchanger 21.

[0114] In a specific embodiment, the second switch assembly 132 includes Figure 2 The first solenoid valve 10 and the third stop valve 11 are connected in series on the first water tank branch, one end of the first solenoid valve 10 is connected to the outlet of the compressor 1, the other end of the first solenoid valve 10 is connected to one end of the third stop valve 11, and the other end of the third stop valve 11 is connected to one end of the water tank heat exchanger 21.

[0115] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention, the second switch component 132 includes a first solenoid valve 10 and a third stop valve 11, and the first solenoid valve 10 and the third stop valve 11 can control the on-off state between the first water tank branch and the refrigerant circulation loop.

[0116] like Figure 2 As shown, in one embodiment of the present invention, the first throttling control component 133 includes: a first capillary tube 12 and a second solenoid valve 13 connected in series, wherein one end of the first capillary tube 12 is connected to the first water tank branch, the other end of the first capillary tube 12 is connected to one end of the second solenoid valve 13, and the other end of the second solenoid valve 13 is connected to the inlet of the compressor 1 and the fourth interface.

[0117] In a specific embodiment, the first throttle control assembly 133 includes Figure 2 The first capillary tube 12 and the second solenoid valve 13 are connected in series, one end of the first capillary tube 12 is connected to the first water tank branch, the other end of the first capillary tube 12 is connected to one end of the second solenoid valve 13, and the other end of the second solenoid valve 13 is connected to the inlet of the compressor 1 and the fourth interface.

[0118] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention, the first throttling control component 133 includes a first capillary tube 12 and a second solenoid valve 13, through which the refrigerant in the water tank branch can be refluxed or not refluxed to the compressor 1.

[0119] like Figure 2 As shown, in one embodiment of the present invention, the second throttling control component 134 includes: a second capillary 14 and a third solenoid valve 15 connected in series, wherein one end of the second capillary 14 is connected to the other end of the gas shut-off valve 9 and the first interface, the other end of the second capillary 14 is connected to one end of the third solenoid valve 15, and the other end of the third solenoid valve 15 is connected to the inlet of the compressor 1 and the fourth interface.

[0120] In a specific embodiment, the second throttle control assembly 134 includes Figure 2 The second capillary 14 and the third solenoid valve 15 are connected in series, one end of the second capillary 14 is connected to the other end of the gas shut-off valve 9 and the first interface, the other end of the second capillary 14 is connected to one end of the third solenoid valve 15, and the other end of the third solenoid valve 15 is connected to the inlet of the compressor 1 and the fourth interface.

[0121] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention, the second throttling control component 134 includes a second capillary tube 14 and a third solenoid valve 15. The second capillary tube 14 and the third solenoid valve 15 can enable the refrigerant in the outdoor heat exchanger 2 and / or the indoor heat exchanger group to flow back or not flow back to the compressor 1.

[0122] like Figure 2As shown, in one embodiment of the present invention, the flow regulating component 135 includes: a second expansion valve 16 and a fourth stop valve 17 connected in series on the second water tank branch, wherein one end of the fourth stop valve 17 is connected to the other end of the water tank heat exchanger 21, the other end of the fourth stop valve 17 is connected to one end of the second expansion valve 16, and the other end of the second expansion valve 16 is connected to one end of the expansion valve group and one end of the outdoor expansion valve 3.

[0123] In a specific embodiment, the flow regulating assembly 135 includes Figure 2 The second expansion valve 16 and the fourth stop valve 17 are connected in series on the second water tank branch, one end of the fourth stop valve 17 is connected to the other end of the water tank heat exchanger 21, the other end of the fourth stop valve 17 is connected to one end of the second expansion valve 16, and the other end of the second expansion valve 16 is connected to one end of the expansion valve group and one end of the outdoor expansion valve 3.

[0124] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention, the flow regulating component 135 includes a second expansion valve 16 and a fourth stop valve 17, and the second expansion valve 16 and the fourth stop valve 17 can adjust the refrigerant flow out of the water tank heat exchanger 21.

[0125] like Figure 2 As shown, in one embodiment of the present invention, the third switch assembly 136 includes: a liquid stop valve 18, one end of the liquid stop valve 18 is connected to one end of the outdoor expansion valve 3, and the other end of the liquid stop valve 18 is connected to one end of the expansion valve group and one end of the flow regulating assembly 135.

[0126] In a specific embodiment, the third switch assembly 136 includes Figure 2 The liquid stop valve 18 in the liquid stop valve 18 has its two ends connected to the outdoor expansion valve 3 and the expansion valve group and the flow regulating component 135 respectively.

[0127] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention, the third switch component 136 includes a liquid stop valve 18, through which the liquid stop valve 18 can control the open-end state between the second water tank branch and the outdoor heat exchanger 2.

[0128] From the above, we can see that Figure 2 As shown, in the one-to-many heat recovery multi-split air-conditioning system 100 provided according to an embodiment of the present invention, all valve components are centrally configured in the outdoor unit module of the air-conditioning system 110, while the indoor unit module of the air-conditioning system 110 only includes an indoor heat exchanger. The indoor unit can significantly reduce mechanical noise and operating vibration, thereby effectively reducing the indoor noise level.

[0129] Figure 8FIG. 1 is a schematic diagram of the refrigerant flow direction in the cooling mode according to an embodiment of the present invention. Figure 8 As shown, in one embodiment of the present invention, the working mode includes a cooling mode; when responding to a control instruction, the controller 71 is configured to control the one-to-many heat recovery multi-split air-conditioning system 100 to operate in the cooling mode, and the controller 71 is configured to: control the first interface and the second interface of the four-way valve 4 to be connected, and control the third interface and the fourth interface of the four-way valve 4 to be connected; control the outdoor expansion valve 3 to be fully open; control the multiple first expansion valves 6 to be open; control the gas stop valve 9 to be fully open; control the first solenoid valve 10 to be closed; control the liquid stop valve 18 to be fully open; control the second expansion valve 16 to be closed; control the second solenoid valve 13 to be open; and control the third solenoid valve 15 to be closed.

[0130] In a specific embodiment, when the one-to-many heat recovery multi-split air-conditioning system 100 operates in cooling mode, the controller 71 controls the first and second interfaces of the four-way valve 4 to be connected, and controls the third and fourth interfaces of the four-way valve 4 to be connected; controls the outdoor expansion valve 3 to be fully opened; controls multiple first expansion valves 6 to be opened; controls the gas stop valve 9 to be fully opened; controls the first solenoid valve 10 to be closed; controls the liquid stop valve 18 to be fully opened; controls the second expansion valve 16 to be closed; controls the second solenoid valve 13 to be opened; and controls the third solenoid valve 15 to be closed.

[0131] In a specific embodiment, when the one-to-many heat recovery multi-split air-conditioning system 100 operates in cooling mode, after the refrigerant flows out of the compressor 1, it flows through the gas stop valve 9, the four-way valve 4, the outdoor heat exchanger 2, the outdoor expansion valve 3, the liquid stop valve 18, multiple first expansion valves 6, multiple second stop valves 8, multiple indoor heat exchangers 5, multiple first stop valves 7 and the four-way valve 4 in sequence, and then flows into the compressor 1 again, completing the refrigerant cycle.

[0132] In a specific embodiment, when the one-to-many heat recovery multi-split air-conditioning system 100 operates in cooling mode, since the hot water system 120 is not involved, refrigerant is retained in the water tank branch. The refrigerant retained in the water tank branch flows back to the compressor 1 through the first capillary 12 and the second solenoid valve 13 based on the pressure difference between the flow path where it is located and the inlet of the compressor 1. This can avoid refrigerant retention and ensure the refrigerant amount when the air-conditioning system 110 is in operation, thereby helping to improve the cooling efficiency of the air-conditioning system 110.

[0133] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention, when responding to a control instruction and controlling the one-to-many heat recovery multi-split air-conditioning system 100 to operate in a cooling mode, the controller 71 controls the corresponding valves to open so that the refrigerant flows through the outdoor heat exchanger 2 and multiple indoor heat exchangers 5 in sequence, and the refrigerant in the water tank branch that does not participate in heat exchange is returned to the compressor 1 based on the pressure difference between the flow path and the inlet of the compressor 1, thereby avoiding refrigerant retention and ensuring the refrigerant quantity during the operation of the air-conditioning system 110, thereby helping to improve the cooling efficiency of the air-conditioning system 110.

[0134] Figure 9 FIG. 1 is a schematic diagram of the refrigerant flow in the heating mode according to an embodiment of the present invention. Figure 9 As shown, in one embodiment of the present invention, the working mode includes a heating mode; when responding to a control instruction, the controller 71 is configured to control the one-to-many heat recovery multi-split air-conditioning system 100 to operate in the heating mode, and the controller 71 is configured to: control the first interface and the third interface of the four-way valve 4 to be connected, and control the second interface and the fourth interface of the four-way valve 4 to be connected; control the outdoor expansion valve 3 to be opened; control the multiple first expansion valves 6 to be opened; control the gas stop valve 9 to be fully opened; control the first solenoid valve 10 to be closed; control the liquid stop valve 18 to be fully opened; control the second expansion valve 16 to be closed; control the second solenoid valve 13 to be opened; and control the third solenoid valve 15 to be closed.

[0135] In a specific embodiment, when the one-to-many heat recovery multi-split air-conditioning system 100 operates in heating mode, the controller 71 controls the first and third interfaces of the four-way valve 4 to be connected, and controls the second and fourth interfaces of the four-way valve 4 to be connected; controls the outdoor expansion valve 3 to be opened; controls multiple first expansion valves 6 to be opened; controls the gas stop valve 9 to be fully opened; controls the first solenoid valve 10 to be closed; controls the liquid stop valve 18 to be fully opened; controls the second expansion valve 16 to be closed; controls the second solenoid valve 13 to be opened; and controls the third solenoid valve 15 to be closed.

[0136] In a specific embodiment, when the one-to-many heat recovery multi-split air-conditioning system 100 operates in heating mode, after the refrigerant flows out of the compressor 1, it flows through the gas stop valve 9, the four-way valve 4, multiple first stop valves 7, multiple indoor heat exchangers 5, multiple second stop valves 8, multiple first expansion valves 6, the liquid stop valve 18, the outdoor expansion valve 3, the outdoor heat exchanger 2 and the four-way valve 4 in sequence, and then flows into the compressor 1 again, completing the refrigerant cycle.

[0137] In a specific embodiment, when the one-to-many heat recovery multi-split air-conditioning system 100 operates in heating mode, since the hot water system 120 is not involved, refrigerant is retained in the water tank branch. The refrigerant retained in the water tank branch flows back to the compressor 1 through the first capillary 12 and the second solenoid valve 13 based on the pressure difference between the flow path where it is located and the inlet of the compressor 1. This can avoid refrigerant retention and ensure the refrigerant amount when the air-conditioning system 110 is in operation, thereby helping to improve the cooling efficiency of the air-conditioning system 110.

[0138] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention, when responding to a control instruction and controlling the one-to-many heat recovery multi-split air-conditioning system 100 to operate in a heating mode, the controller 71 controls the corresponding valve to open so that the refrigerant flows through multiple indoor heat exchangers 5 and outdoor heat exchangers 2 in sequence, and the refrigerant in the water tank branch that does not participate in heat exchange is returned to the compressor 1 based on the pressure difference between the flow path and the inlet of the compressor 1, thereby avoiding refrigerant retention and ensuring the refrigerant quantity when the air-conditioning system 110 is in operation, thereby helping to improve the cooling efficiency of the air-conditioning system 110.

[0139] Figure 10 FIG. 1 is a schematic diagram of the refrigerant flow direction in the water tank heating mode according to an embodiment of the present invention. Figure 10 As shown, in one embodiment of the present invention, the working mode includes a water tank separate heating mode; when responding to a control instruction, the one-to-many heat recovery multi-split air-conditioning system 100 is controlled to operate in a water tank separate heating mode, the controller 71 is configured to: control the first interface and the third interface of the four-way valve 4 to be connected, and control the second interface and the fourth interface of the four-way valve 4 to be connected; control the outdoor expansion valve 3 to be opened; control the multiple first expansion valves 6 to be closed; control the gas stop valve 9 to be closed; control the first solenoid valve 10 to be fully opened; control the liquid stop valve 18 to be fully opened; control the second expansion valve 16 to be fully opened; control the second solenoid valve 13 to be closed; and control the third solenoid valve 15 to be opened.

[0140] In a specific embodiment, when the one-to-many heat recovery multi-split air-conditioning system 100 operates in a water tank separate heating mode, the controller 71 controls the first and third interfaces of the four-way valve 4 to be connected, and controls the second and fourth interfaces of the four-way valve 4 to be connected; controls the outdoor expansion valve 3 to be opened; controls multiple first expansion valves 6 to be closed; controls the gas stop valve 9 to be closed; controls the first solenoid valve 10 to be fully opened; controls the liquid stop valve 18 to be fully opened; controls the second expansion valve 16 to be fully opened; controls the second solenoid valve 13 to be closed; and controls the third solenoid valve 15 to be opened.

[0141] In a specific embodiment, when the one-to-many heat recovery multi-split air-conditioning system 100 operates in a water tank separate heating mode, after the refrigerant flows out of the compressor 1, it flows through the first solenoid valve 10, the third stop valve 11, the water tank heat exchanger 21, the fourth stop valve 17, the second expansion valve 16, the liquid stop valve 18, the outdoor expansion valve 3, the outdoor heat exchanger 2 and the four-way valve 4 in sequence, and then flows into the compressor 1 again, completing the refrigerant cycle.

[0142] In a specific embodiment, when the one-to-many heat recovery multi-split air-conditioning system 100 operates in a water tank separate heating mode, since the multiple indoor heat exchangers 5 are not involved, refrigerant is retained in the refrigerant circulation loop. The refrigerant retained in the refrigerant circulation loop flows back to the compressor 1 through the second capillary 14 and the third solenoid valve 15 based on the pressure difference between the flow path and the inlet of the compressor 1. This can avoid refrigerant retention and ensure the refrigerant quantity when the air-conditioning system 110 is in operation, thereby helping to improve the cooling efficiency of the air-conditioning system 110.

[0143] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention, when responding to a control instruction and controlling the one-to-many heat recovery multi-split air-conditioning system 100 to operate in a water tank separate heating mode, the controller 71 controls the corresponding valve to open so that the refrigerant flows through the water tank heat exchanger 21 and the outdoor heat exchanger 2 in sequence, and the refrigerant that does not participate in the heat exchange in the refrigerant circulation loop is returned to the compressor 1 based on the pressure difference between the flow path and the inlet of the compressor 1, thereby avoiding refrigerant retention and ensuring the refrigerant quantity during the operation of the air-conditioning system 110, thereby helping to improve the cooling efficiency of the air-conditioning system 110.

[0144] Figure 11 FIG. 1 is a schematic diagram of the refrigerant flow direction in the first cooling and water tank heating mode according to an embodiment of the present invention. Figure 11 As shown, in one embodiment of the present invention, the working mode includes a first cooling and water tank heating mode; when responding to a control instruction, the one-to-many heat recovery multi-split air-conditioning system 100 is controlled to operate in the first cooling and water tank heating mode, the controller 71 is configured to: control the first interface and the second interface of the four-way valve 4 to be connected, and control the third interface and the fourth interface of the four-way valve 4 to be connected; control the outdoor expansion valve 3 to be fully open; control multiple first expansion valves 6 to be open; control the gas stop valve 9 to be fully open; control the first solenoid valve 10 to be fully open; control the liquid stop valve 18 to be fully open; control the second expansion valve 16 to be fully open; control the second solenoid valve 13 to be closed; control the third solenoid valve 15 to be closed.

[0145] In a specific embodiment, when the one-to-many heat recovery multi-split air-conditioning system 100 operates in the first cooling and water tank heating mode, the controller 71 controls the first interface and the second interface of the four-way valve 4 to be connected, and controls the third interface and the fourth interface of the four-way valve 4 to be connected; controls the outdoor expansion valve 3 to be fully opened; controls multiple first expansion valves 6 to be opened; controls the gas stop valve 9 to be fully opened; controls the first solenoid valve 10 to be fully opened; controls the liquid stop valve 18 to be fully opened; controls the second expansion valve 16 to be fully opened; controls the second solenoid valve 13 to be closed; and controls the third solenoid valve 15 to be closed.

[0146] In a specific embodiment, when the one-to-many heat recovery multi-split air-conditioning system 100 operates in the first cooling and water tank heating mode, after the refrigerant flows out of the compressor 1, one path flows through the gas stop valve 9, the four-way valve 4, the outdoor heat exchanger 2, the outdoor expansion valve 3, the liquid stop valve 18, multiple first expansion valves 6, multiple second stop valves 8, multiple indoor heat exchangers 5, multiple first stop valves 7 and the four-way valve 4 in sequence before flowing into the compressor 1 again, and the other path flows through the first solenoid valve 10, the third stop valve 11, the water tank heat exchanger 21, the fourth stop valve 17, the second expansion valve 16, multiple first expansion valves 6, multiple second stop valves 8, multiple indoor heat exchangers 5, multiple first stop valves 7 and the four-way valve 4 in sequence before flowing into the compressor 1 again, completing the refrigerant cycle.

[0147] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention, when responding to a control instruction and controlling the one-to-many heat recovery multi-split air-conditioning system 100 to operate in the first cooling and water tank heating mode, the controller 71 controls the corresponding valves to open so that the refrigerant flows through the outdoor heat exchanger 2, the water tank heat exchanger 21 and multiple indoor heat exchangers 5 in sequence, and uses the heat generated during the operation of the air conditioner to heat the water, organically combining the cooling and hot water functions, which helps to improve energy utilization efficiency.

[0148] Figure 12 FIG. 1 is a schematic diagram of the refrigerant flow direction in the second cooling and water tank heating mode according to an embodiment of the present invention. Figure 12 As shown, the working mode includes a second cooling and water tank heating mode; when responding to a control instruction, the one-to-many heat recovery multi-split air-conditioning system 100 is controlled to operate in the second cooling and water tank heating mode, the controller 71 is configured to: control the first interface and the second interface of the four-way valve 4 to be connected, and control the third interface and the fourth interface of the four-way valve 4 to be connected; control the outdoor expansion valve 3 to be closed; control multiple first expansion valves 6 to be opened; control the gas stop valve 9 to be closed; control the first solenoid valve 10 to be fully opened; control the liquid stop valve 18 to be closed; control the second expansion valve 16 to be fully opened; control the second solenoid valve 13 to be closed; and control the third solenoid valve 15 to be open.

[0149] In a specific embodiment, when the one-to-many heat recovery multi-split air-conditioning system 100 operates in the second cooling and water tank heating mode, the controller 71 controls the first and second interfaces of the four-way valve 4 to be connected, and controls the third and fourth interfaces of the four-way valve 4 to be connected; controls the outdoor expansion valve 3 to be closed; controls multiple first expansion valves 6 to be opened; controls the gas stop valve 9 to be closed; controls the first solenoid valve 10 to be fully opened; controls the liquid stop valve 18 to be closed; controls the second expansion valve 16 to be fully opened; controls the second solenoid valve 13 to be closed; and controls the third solenoid valve 15 to be opened.

[0150] In a specific embodiment, when the one-to-many heat recovery multi-split air-conditioning system 100 operates in the second cooling and water tank heating mode, after the refrigerant flows out of the compressor 1, it flows through the first solenoid valve 10, the third stop valve 11, the water tank heat exchanger 21, the fourth stop valve 17, the second expansion valve 16, multiple first expansion valves 6, multiple second stop valves 8, multiple indoor heat exchangers 5, multiple first stop valves 7 and the four-way valve 4 in sequence before flowing into the compressor 1 again to complete the refrigerant cycle; it can be seen that in the second cooling and water tank heating mode, the refrigerant flows through the water tank heat exchanger 21 and multiple indoor heat exchangers 5 in sequence. Compared with the first cooling and water tank heating mode in which the refrigerant flows through the outdoor heat exchanger 2, the water tank heat exchanger 21 and multiple indoor heat exchangers 5 in sequence, the refrigerant in the second cooling and water tank heating mode does not need to flow through the outdoor heat exchanger 2, thereby reducing heat loss. Therefore, the heat recovery amount in the second cooling and water tank heating mode is higher than the heat recovery amount in the first cooling and water tank heating mode.

[0151] In a specific embodiment, when the one-to-many heat recovery multi-split air-conditioning system 100 operates in the second cooling and water tank heating mode, since the outdoor heat exchanger 2 is not involved, refrigerant is retained in the refrigerant circulation loop. The refrigerant retained in the refrigerant circulation loop flows back to the compressor 1 through the second capillary 14 and the third solenoid valve 15 based on the pressure difference between the flow path and the inlet of the compressor 1. This can avoid refrigerant retention and ensure the refrigerant quantity when the air-conditioning system 110 is in operation, thereby helping to improve the cooling efficiency of the air-conditioning system 110.

[0152] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention, when responding to a control instruction and controlling the one-to-many heat recovery multi-split air-conditioning system 100 to operate in the second cooling and water tank heating mode, the controller 71 controls the corresponding valve to open so that the refrigerant flows through the water tank heat exchanger 21 and multiple indoor heat exchangers 5 in sequence, and uses the heat generated during the operation of the air conditioner to heat the water, organically combining the cooling and hot water functions, which helps to improve energy utilization efficiency, and returns the refrigerant that does not participate in heat exchange in the refrigerant circulation loop to the compressor 1 based on the pressure difference between the flow path and the inlet of the compressor 1, thereby avoiding refrigerant retention and ensuring the refrigerant quantity when the air-conditioning system 110 is in operation, thereby helping to improve the cooling efficiency of the air-conditioning system 110.

[0153] Figure 13 FIG. 1 is a schematic diagram of the refrigerant flow direction in the heating and water tank heating modes according to an embodiment of the present invention. Figure 13 As shown, in one embodiment of the present invention, the working modes include heating and water tank heating modes; when responding to the control instruction, the one-to-many heat recovery multi-split air-conditioning system 100 is controlled to operate in heating and water tank heating modes, the controller 71 is configured to: control the first interface and the third interface of the four-way valve 4 to be connected, and control the second interface and the fourth interface of the four-way valve 4 to be connected; control the outdoor expansion valve 3 to be opened; control the multiple first expansion valves 6 to be opened; control the gas stop valve 9 to be fully opened; control the first solenoid valve 10 to be fully opened; control the liquid stop valve 18 to be fully opened; control the second expansion valve 16 to be opened; control the second solenoid valve 13 to be closed; control the third solenoid valve 15 to be closed.

[0154] In a specific embodiment, when the one-to-many heat recovery multi-split air-conditioning system 100 operates in heating and water tank heating modes, the controller 71 controls the first and third interfaces of the four-way valve 4 to be connected, and controls the second and fourth interfaces of the four-way valve 4 to be connected; controls the outdoor expansion valve 3 to be opened; controls multiple first expansion valves 6 to be opened; controls the gas stop valve 9 to be fully opened; controls the first solenoid valve 10 to be fully opened; controls the liquid stop valve 18 to be fully opened; controls the second expansion valve 16 to be opened; controls the second solenoid valve 13 to be closed; and controls the third solenoid valve 15 to be closed.

[0155] In a specific embodiment, when the one-to-many heat recovery multi-split air-conditioning system 100 operates in heating and water tank heating modes, after the refrigerant flows out of the compressor 1, one path flows through the gas stop valve 9, the four-way valve 4, multiple first stop valves 7, multiple indoor heat exchangers 5, multiple second stop valves 8, multiple first expansion valves 6, the liquid stop valve 18, the outdoor expansion valve 3, the outdoor heat exchanger 2 and the four-way valve 4 in sequence before flowing into the compressor 1 again, and the other path flows through the first solenoid valve 10, the third stop valve 11, the water tank heat exchanger 21, the fourth stop valve 17, the second expansion valve 16, the liquid stop valve 18, the outdoor expansion valve 3, the outdoor heat exchanger 2 and the four-way valve 4 in sequence before flowing into the compressor 1 again, completing the refrigerant cycle.

[0156] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention, when responding to a control instruction and controlling the one-to-many heat recovery multi-split air-conditioning system 100 to operate in heating and water tank heating modes, the controller 71 controls the corresponding valves to open so that the refrigerant flows through multiple indoor heat exchangers 5, water tank heat exchangers 21 and outdoor heat exchangers 2 in sequence, and uses the heat generated during the operation of the air conditioner to heat the water, organically combining the heating and hot water functions, which helps to improve energy utilization efficiency.

[0157] Figure 14FIG. 1 is a schematic diagram of a hot water system according to a specific embodiment of the present invention. Figure 14 As shown, in a specific embodiment of the present invention, the hot water system 120 includes a water inlet, a water outlet and an exhaust valve, and a water inlet valve is provided on the water inlet; the hot water system 120 also includes a high-pressure sensor and a water level sensor, the high-pressure sensor is used to detect the pressure in the water tank 20, and the water level sensor is used to detect the water level in the water tank 20; the hot water system 120 also includes an electric heating device, which is used to use electrical energy to heat the water in the water tank 20.

[0158] In combination with the above, the one-to-many heat recovery multi-split air conditioning system 100 provided according to the embodiment of the present invention has the following beneficial effects:

[0159] First, the one-to-many heat recovery multi-split air-conditioning system 100 provided according to an embodiment of the present invention is different from conventional heat pump products in that a branch leading to the water tank is added in the pipeline from the compressor outlet to the four-way valve. This water tank branch is used as part of the condenser to heat the water in the water tank, so it can meet the needs of air conditioning and hot water systems at the same time, and organically combine the cooling, heating and domestic hot water functions; in actual application, users no longer need to configure a separate gas water heater or electric water heater, thereby saving equipment investment and occupied space.

[0160] Secondly, the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention can effectively use the heat released indoors in cooling mode to heat the water in the water tank, thereby realizing simultaneous air-conditioning cooling and hot water preparation without the need for additional electric heating, thereby improving energy utilization efficiency and reducing energy consumption, helping users reduce operating costs.

[0161] Finally, the one-to-many heat recovery multi-split air-conditioning system 100 provided according to an embodiment of the present invention utilizes a capillary tube as a throttling device to efficiently recover the refrigerant retained in the branch that is not put into operation, thereby ensuring the full recycling of the refrigerant, thereby improving the system efficiency and preventing efficiency degradation or abnormal operation due to refrigerant retention.

[0162] In summary, the one-to-many heat recovery multi-split air-conditioning system 100 provided according to an embodiment of the present invention includes an interconnected air-conditioning system 110, a hot water system 120, a regulating unit 130, and a controller 71. The hot water system 120 can be used as a condenser. The controller 71 responds to control instructions to control the one-to-many heat recovery multi-split air-conditioning system 100 to operate in different working modes, thereby enriching the working modes of the one-to-many heat recovery multi-split air-conditioning system 100 and improving intelligence. At the same time, the controller 71 controls the status of each component in the regulating unit 130 in different working modes, thereby adjusting the on-off state between the refrigerant circulation loop and the water tank branch, and adjusting the on-off state between the outdoor heat exchanger 2 and the indoor heat exchanger group in the refrigerant circulation loop, so that the refrigerant that does not participate in heat exchange in the refrigerant circulation loop and / or the water tank branch flows back to the compressor 1 based on the pressure difference between the flow path and the inlet of the compressor 1. This can avoid refrigerant retention and ensure the refrigerant amount when the air-conditioning system 110 is in operation, thereby helping to improve the cooling efficiency of the air-conditioning system 110.

[0163] Figure 15 This is a control flow chart of a one-to-many heat recovery multi-split air conditioning system according to an embodiment of the present invention. Figure 15 As shown, in one embodiment of the present invention, the controller 71 is further configured to: receive a first control command signal, wherein the first control command signal includes at least one of a cooling command signal, a heating command signal and a hot water command signal, wherein the cooling command signal and the heating command signal cannot be issued at the same time; determine a first target operating mode corresponding to the first control command signal, and determine the most energy-efficient mode in the first target operating mode as the second target operating mode, wherein the first target operating mode includes at least one of the operating modes; generate a second control command signal based on the second target operating mode, so that the one-to-many heat recovery multi-split air-conditioning system 100 executes the second target operating mode when receiving the second control command signal.

[0164] In a specific embodiment, an operator may send a first control command signal to the controller 71 via a terminal. Specifically, the terminal includes, but is not limited to, a remote controller or a control button, and the first control command signal includes at least one of a cooling command signal, a heating command signal, and a hot water command signal. The cooling command signal and the heating command signal cannot be sent simultaneously.

[0165] In a specific embodiment, after receiving the first control instruction signal, the controller 71 determines a first target operating mode corresponding to the first control instruction signal, and determines the mode with the highest energy efficiency among the first target operating modes as the second target operating mode. Specifically, the first target operating mode includes at least one of the operating modes, and the mode with the highest energy efficiency among the first target operating modes can be determined as the second target operating mode by comparing instantaneous energy efficiency or average energy efficiency.

[0166] In a specific embodiment, after determining the second target operating mode, controller 71 generates a second control command signal based on the second target operating mode, causing the multi-split air conditioning system 100 with heat recovery to execute the second target operating mode upon receiving the second control command signal. This not only determines the operating mode that meets the user's instructions and activates the corresponding cooling, heating, and / or hot water functions, but also automatically selects the most energy-efficient mode among the operating modes that meet the user's instructions, helping to optimize performance and energy savings, thereby enhancing intelligence.

[0167] Specifically, the one-to-many heat recovery multi-split air-conditioning system 100 that can operate in different working modes provided according to an embodiment of the present invention includes a controller 71. After receiving the first control instruction signal, the controller 71 first determines the first target working mode corresponding to the first control instruction signal from the working mode, and then determines the mode with the highest energy efficiency in the first target working mode as the second target working mode. Finally, based on the second target working mode, a second control instruction signal is generated to enable the one-to-many heat recovery multi-split air-conditioning system 100 to execute the second target working mode when receiving the second control instruction signal; the one-to-many heat recovery multi-split air-conditioning system 100 provided by the embodiment of the present invention can not only determine the working mode that meets the user's instructions and turn on the corresponding cooling function or heating function and / or hot water function, but also automatically select the mode with higher energy efficiency in the working mode that meets the user's instructions, which helps to optimize the performance and energy-saving effects, thereby improving the degree of intelligence.

[0168] Figure 16 This is an overall control flow chart of a one-to-many heat recovery multi-split air conditioning system according to an embodiment of the present invention. Figure 16 As shown, in one embodiment of the present invention, when determining the first target operating mode corresponding to the first control command signal and determining that the mode with the highest energy efficiency in the first target operating mode is the second target operating mode, the controller 71 is configured as follows: when the first control command signal includes a cooling command signal but does not include a heating command signal and a hot water command signal, determining that the first target operating mode includes the cooling mode, and determining that the cooling mode is the second target operating mode.

[0169] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 that can operate in different working modes provided by an embodiment of the present invention, when the first control command signal includes a cooling command signal but does not include a heating command signal and a hot water command signal, it is determined that the first target working mode includes a cooling mode, and the cooling mode is determined to be the second target working mode, so that the one-to-many heat recovery multi-split air-conditioning system 100 executes the cooling mode; the one-to-many heat recovery multi-split air-conditioning system 100 provided by this embodiment of the present invention can operate the corresponding cooling mode and turn on the corresponding cooling function according to the cooling command issued by the user, and respond quickly and accurately.

[0170] like Figure 16 As shown, in one embodiment of the present invention, when determining the first target operating mode corresponding to the first control command signal and determining that the mode with the highest energy efficiency in the first target operating mode is the second target operating mode, the controller 71 is configured as follows: when the first control command signal includes a heating command signal but does not include a cooling command signal and a hot water command signal, determining that the first target operating mode includes a heating mode, and determining that the heating mode is the second target operating mode.

[0171] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 that can operate in different working modes provided by an embodiment of the present invention, when the first control command signal includes a heating command signal but does not include a cooling command signal and a hot water command signal, it is determined that the first target working mode includes a heating mode, and the heating mode is determined to be the second target working mode, so that the one-to-many heat recovery multi-split air-conditioning system 100 executes the heating mode; the one-to-many heat recovery multi-split air-conditioning system 100 provided by this embodiment of the present invention can operate the corresponding heating mode and turn on the corresponding heating function according to the heating command issued by the user, and respond quickly and accurately.

[0172] like Figure 16 As shown, in one embodiment of the present invention, when determining the first target operating mode corresponding to the first control command signal and determining that the mode with the highest energy efficiency in the first target operating mode is the second target operating mode, the controller 71 is configured as follows: when the first control command signal includes a hot water command signal but does not include a cooling command signal and a heating command signal, determining that the first target operating mode includes a water tank separate heating mode, and determining that the water tank separate heating mode is the second target operating mode.

[0173] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 that can operate in different working modes provided by an embodiment of the present invention, when the first control command signal includes a hot water command signal but does not include a cooling command signal and a heating command signal, it is determined that the first target working mode includes a water tank separate heating mode, and the water tank separate heating mode is determined as the second target working mode, so that the one-to-many heat recovery multi-split air-conditioning system 100 executes the water tank separate heating mode; the one-to-many heat recovery multi-split air-conditioning system 100 provided by this embodiment of the present invention can operate the corresponding water tank separate heating mode according to the hot water command issued by the user, turn on the corresponding hot water function, and respond quickly and accurately.

[0174] like Figure 16 As shown, in one embodiment of the present invention, when determining the first target operating mode corresponding to the first control command signal, and determining that the mode with the highest energy efficiency in the first target operating mode is the second target operating mode, the controller 71 is configured as follows: when the first control command signal includes a cooling command signal and a hot water command signal, but does not include a heating command signal, determining that the first target operating mode includes a cooling mode, a first cooling and water tank heating mode, and a second cooling and water tank heating mode, and determining that the mode with the highest energy efficiency in the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode is the second target operating mode.

[0175] In a specific embodiment, when the first control command signal includes a cooling command signal and a hot water command signal, but does not include a heating command signal, the first target operating mode is determined to include a cooling mode, a first cooling and water tank heating mode, and a second cooling and water tank heating mode. At this time, the electric heating device is turned on in the cooling mode to heat the water in the water tank. When the mode with the highest energy efficiency among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode is determined to be the second target operating mode, the thermal efficiency in the cooling mode is the thermal efficiency of the electric heating device.

[0176] Specifically, according to the embodiment of the present invention, a one-to-many heat recovery multi-split air-conditioning system 100 that can operate in different working modes is provided. When the first control command signal includes a cooling command signal and a hot water command signal, but does not include a heating command signal, it is determined that the first target working mode includes a cooling mode, a first cooling and water tank heating mode, and a second cooling and water tank heating mode. The mode with the highest energy efficiency among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode is determined to be the second target working mode, so that the one-to-many heat recovery multi-split air-conditioning system 100 executes the mode with the highest energy efficiency among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode. The one-to-many heat recovery multi-split air-conditioning system 100 provided by the embodiment of the present invention can not only determine the working mode that meets the user's instructions and turn on the corresponding cooling function and hot water function, but also automatically select the mode with higher energy efficiency among the working modes that meet the user's instructions, which helps to optimize performance and energy-saving effects, thereby improving the degree of intelligence.

[0177] In one embodiment of the present invention, when determining that the mode with the highest energy efficiency among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode is the second target operating mode, the controller 71 is configured to: determine, according to the instantaneous target or the non-instantaneous target, the mode with the highest energy efficiency among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode as the second target operating mode; wherein the instantaneous target includes the cooling capacity corresponding to each mode; the controller 71 is configured to: if the cooling capacity of the cooling mode meets the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode meets the target cooling demand, then determine that the mode with the highest energy efficiency among the first cooling and water tank heating mode and the second cooling and water tank heating mode is the second target operating mode; if the cooling capacity of the cooling mode meets the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode does not meet the target cooling demand, then determine that the mode with the highest energy efficiency among the cooling mode and the first cooling and water tank heating mode is the second target operating mode. mode; if the cooling capacity of the cooling mode does not meet the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode meets the target cooling demand, then the mode with the highest energy efficiency among the first cooling and water tank heating mode and the second cooling and water tank heating mode is determined to be the second target working mode; if the cooling capacity of the cooling mode does not meet the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode does not meet the target cooling demand, then the mode with the largest cooling capacity among the cooling mode, the first cooling and water tank heating mode and the second cooling and water tank heating mode is determined to be the second target working mode; the non-instantaneous target includes the predicted energy efficiency corresponding to each mode; the controller 71 is configured to: use a preset state prediction model to determine the first predicted energy efficiency corresponding to the cooling mode, the second predicted energy efficiency corresponding to the first cooling and water tank heating mode, and the third predicted energy efficiency corresponding to the second cooling and water tank heating mode, and determine the mode corresponding to the highest energy efficiency among the first predicted energy efficiency, the second predicted energy efficiency and the third predicted energy efficiency as the second target working mode.

[0178] In a specific embodiment, the controller 71 can determine the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode as the second target operating mode based on the instantaneous target. Specifically, the instantaneous target includes the cooling capacity corresponding to each mode.

[0179] In a specific embodiment, the controller 71 determines the mode with the highest energy efficiency among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode as the second target operating mode according to the instantaneous target, including: (1) if the cooling capacity of the cooling mode meets the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode meets the target cooling demand, then determining the mode with the highest energy efficiency among the first cooling and water tank heating mode and the second cooling and water tank heating mode as the second target operating mode; (2) if the cooling capacity of the cooling mode meets the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode does not meet the target cooling demand, then determining the cooling mode and The mode with the highest energy efficiency among the first cooling and water tank heating modes is the second target operating mode; (3) if the cooling capacity of the cooling mode does not meet the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode meets the target cooling demand, then the mode with the highest energy efficiency among the first cooling and water tank heating mode and the second cooling and water tank heating mode is determined to be the second target operating mode; (4) if the cooling capacity of the cooling mode does not meet the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode does not meet the target cooling demand, then the mode with the largest cooling capacity among the cooling mode, the first cooling and water tank heating mode and the second cooling and water tank heating mode is determined to be the second target operating mode.

[0180] In a specific embodiment, the controller 71 may determine the second target operating mode as the mode with the highest energy efficiency among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode based on the non-instantaneous target. Specifically, the non-instantaneous target includes the predicted energy efficiency corresponding to each mode.

[0181] In a specific embodiment, the controller 71 determines the mode with the highest energy efficiency among the refrigeration mode, the first refrigeration and water tank heating mode, and the second refrigeration and water tank heating mode as the second target operating mode based on the non-instantaneous target, including: using a preset state prediction model to determine the first predicted energy efficiency corresponding to the refrigeration mode, the second predicted energy efficiency corresponding to the first refrigeration and water tank heating mode, and the third predicted energy efficiency corresponding to the second refrigeration and water tank heating mode, and determining the mode with the highest energy efficiency among the first predicted energy efficiency, the second predicted energy efficiency, and the third predicted energy efficiency as the second target operating mode.

[0182] In a specific embodiment, the preset state prediction model is, for example, MPC (Model Predictive Control). In order to accurately reflect the operating characteristics of the system, it is first necessary to establish a mathematical model that describes the dynamic performance of the system, such as a heat pump model and a water tank model. These models should be calibrated and optimized in combination with actual operating data to ensure that they are closer to the actual working conditions, so that the cooling capacity, heat recovery amount, and energy efficiency performance under different operating modes can be accurately calculated. In this way, the model can truly reflect the dynamic changes of the system under different environmental conditions and load demands, and provide a reliable basis for subsequent control decisions.

[0183] On this basis, MPC can use current environmental conditions (such as outdoor temperature, humidity, load demand, electricity price, etc.) and system operating parameters (such as compressor frequency, flow distribution ratio, etc.) to predict the operating status in the future. The forecast content not only includes energy efficiency performance under different modes, but also covers key factors such as changes in cooling load demand and trends in hot water tank water temperature. MPC will also comprehensively consider constraints such as the system's cooling capacity, hot water tank temperature limits, and operating range to ensure that the forecast results are consistent with actual operating requirements, thereby providing an accurate basis for optimizing control decisions. In the optimization decision-making stage, MPC selects the optimal operating mode by comparing the average energy efficiency of different modes over a period of time to optimize the overall energy efficiency of the system.

[0184] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 that can operate in different working modes provided by an embodiment of the present invention, the controller 71 determines the most energy-efficient mode among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode as the second target working mode according to the instantaneous target or the non-instantaneous target; thereby ensuring that the system operating state is accurately adjusted according to user needs under different environmental conditions to maximize energy efficiency and reduce energy consumption. By comparing and selecting different modes, the system can dynamically adapt to changing usage conditions, taking into account both short-term immediate energy efficiency and long-term economy.

[0185] Figure 17 This is a first simplified control flow chart of a one-to-many heat recovery multi-split air conditioning system according to an embodiment of the present invention. Figure 17 As shown, in one embodiment of the present invention, when determining the first target operating mode corresponding to the first control command signal, and determining that the mode with the highest energy efficiency in the first target operating mode is the second target operating mode, the controller 71 is configured as follows: when the first control command signal includes a cooling command signal and a hot water command signal, but does not include a heating command signal, determining that the first target operating mode includes a cooling mode and a second cooling and water tank heating mode, and determining that the mode with the highest energy efficiency in the cooling mode and the second cooling and water tank heating mode is the second target operating mode.

[0186] In a specific embodiment, since the first cooling and water tank heating modes are rarely set in some one-to-many air conditioning systems, based on this, as Figure 17 As shown, a specific embodiment of the present invention provides a simplified control idea: when the first control command signal includes a cooling command signal and a hot water command signal, but does not include a heating command signal, compared to Figure 16 In the complete control idea shown, it is determined that the first target working mode includes the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode, and the mode with the highest energy efficiency among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode is determined as the second target working mode. The simplified method omits the first cooling and water tank heating mode and only determines that the first target working mode includes the cooling mode and the second cooling and water tank heating mode, and determines that the mode with the highest energy efficiency among the cooling mode and the second cooling and water tank heating mode is determined as the second target working mode; this can simplify the control process, reduce the calculation pressure, and help improve the control efficiency.

[0187] In a specific embodiment, when the first control command signal includes a cooling command signal and a hot water command signal, but does not include a heating command signal, it is determined that the first target operating mode includes a cooling mode and a second cooling and water tank heating mode. At this time, the electric heating device is turned on in the cooling mode to heat the water in the water tank. When the cooling mode and the second cooling and water tank heating mode with the highest energy efficiency are determined to be the second target operating mode, the thermal efficiency in the cooling mode is the thermal efficiency of the electric heating device.

[0188] Specifically, according to the embodiment of the present invention, a one-to-many heat recovery multi-split air-conditioning system 100 that can operate in different working modes is provided. When the first control command signal includes a cooling command signal and a hot water command signal, but does not include a heating command signal, it is determined that the first target working mode includes a cooling mode and a second cooling and water tank heating mode, and the mode with the highest energy efficiency among the cooling mode and the second cooling and water tank heating modes is determined to be the second target working mode, so that the one-to-many heat recovery multi-split air-conditioning system 100 executes the mode with the highest energy efficiency among the cooling mode and the second cooling and water tank heating modes; the one-to-many heat recovery multi-split air-conditioning system 100 provided by the embodiment of the present invention can not only determine the working mode that meets the user's instructions and turn on the corresponding cooling function and hot water function, but also automatically select the mode with higher energy efficiency among the working modes that meet the user's instructions, and at the same time, it can simplify the control process, reduce computing pressure, improve control efficiency, and help to optimize performance and energy-saving effects, thereby improving the degree of intelligence.

[0189] In one embodiment of the present invention, when determining the mode with the highest energy efficiency between the cooling mode and the second cooling and water tank heating mode as the second target operating mode, the controller 71 is configured to: if the cooling capacity of the cooling mode meets the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode meets the target cooling demand, then determine the mode with the highest energy efficiency between the cooling mode and the second cooling and water tank heating mode as the second target operating mode; if the cooling capacity of the cooling mode meets the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode does not meet the target cooling demand, then determine the mode with the largest cooling capacity between the cooling mode and the second cooling and water tank heating mode as the second target operating mode; if the cooling capacity of the cooling mode does not meet the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode meets the target cooling demand, then determine the mode with the largest cooling capacity between the cooling mode and the second cooling and water tank heating mode as the second target operating mode; if the cooling capacity of the cooling mode does not meet the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode does not meet the target cooling demand, then determine the mode with the largest cooling capacity between the cooling mode and the second cooling and water tank heating mode as the second target operating mode.

[0190] In a specific embodiment, based on the simplified control concept described above, the controller 71 can determine the most energy-efficient mode among the cooling mode, the second cooling mode, and the water tank heating mode as the second target operating mode based on the instantaneous target. Specifically, the instantaneous target includes the cooling capacity corresponding to each mode.

[0191] In a specific embodiment, the controller 71 determines the mode with the highest energy efficiency between the cooling mode and the second cooling and water tank heating mode as the second target operating mode based on the instantaneous target, including: (1) if the cooling capacity of the cooling mode meets the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode meets the target cooling demand, then determining the mode with the highest energy efficiency between the cooling mode and the second cooling and water tank heating mode as the second target operating mode; (2) if the cooling capacity of the cooling mode meets the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode does not meet the target cooling demand, then determining the mode with the largest cooling capacity between the cooling mode and the second cooling and water tank heating mode as the second target operating mode; (3) if the cooling capacity of the cooling mode does not meet the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode meets the target cooling demand, then determining the mode with the largest cooling capacity between the cooling mode and the second cooling and water tank heating mode as the second target operating mode; (4) if the cooling capacity of the cooling mode does not meet the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode does not meet the target cooling demand, then determining the mode with the largest cooling capacity between the cooling mode and the second cooling and water tank heating mode as the second target operating mode.

[0192] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 that can operate in different working modes provided by an embodiment of the present invention, the controller 71 determines the most energy-efficient mode among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode as the second target working mode based on the instantaneous target; thereby ensuring that the system operating state is accurately adjusted according to user needs under different environmental conditions to maximize energy efficiency and reduce energy consumption. By comparing and selecting different modes, the system can dynamically adapt to changing usage conditions.

[0193] like Figure 16 As shown, in one embodiment of the present invention, when determining the first target operating mode corresponding to the first control command signal, and determining that the mode with the highest energy efficiency in the first target operating mode is the second target operating mode, the controller 71 is configured as follows: when the first control command signal includes a heating command signal and a hot water command signal, but does not include a cooling command signal, determining that the first target operating mode includes a heating mode and a heating and water tank heating mode, and determining that the mode with the highest energy efficiency in the heating mode and the heating and water tank heating mode is the second target operating mode.

[0194] In a specific embodiment, when the first control command signal includes a heating command signal and a hot water command signal, but does not include a cooling command signal, it is determined that the first target operating mode includes a heating mode and a heating and water tank heating mode. At this time, the electric heating device is turned on in the heating mode to heat the water in the water tank. When the mode with the highest energy efficiency among the heating mode and the heating and water tank heating mode is determined to be the second target operating mode, the thermal efficiency in the heating mode is the thermal efficiency of the electric heating device.

[0195] Specifically, according to the embodiment of the present invention, a one-to-many heat recovery multi-split air-conditioning system 100 that can operate in different working modes is provided. When the first control command signal includes a heating command signal and a hot water command signal, but does not include a cooling command signal, it is determined that the first target working mode includes a heating mode and a heating and water tank heating mode, and the mode with the highest energy efficiency among the heating mode and the heating and water tank heating mode is determined as the second target working mode, so that the one-to-many heat recovery multi-split air-conditioning system 100 executes the mode with the highest energy efficiency among the heating mode and the heating and water tank heating mode; the one-to-many heat recovery multi-split air-conditioning system 100 provided by the embodiment of the present invention can not only determine the working mode that meets the user's instructions and turn on the corresponding heating function and hot water function, but also automatically select the mode with higher energy efficiency among the working modes that meet the user's instructions, which helps to optimize the performance and energy-saving effects, thereby improving the degree of intelligence.

[0196] Figure 18 is a temperature-mode mapping relationship table according to an embodiment of the present invention. Figure 18As shown, in one embodiment of the present invention, when determining that the mode with the highest energy efficiency among the heating mode and the heating and water tank heating mode is the second target operating mode, the controller 71 is configured to: obtain the current ambient temperature and the current water temperature of the water tank; based on a preset temperature-mode mapping relationship table, obtain a third target operating mode corresponding to the current ambient temperature and the current water temperature, wherein the temperature-mode mapping relationship table includes the corresponding mapping relationship between the ambient temperature, the water temperature and the operating mode; and determine the third target operating mode as the second target operating mode.

[0197] In a specific embodiment, when the first control command signal includes a heating command signal and a hot water command signal, but does not include a cooling command signal, it is determined that the first target operating mode includes a heating mode and a heating and water tank heating mode. At this time, the electric heating device is turned on in the heating mode to heat the water in the water tank. When the mode with the highest energy efficiency among the heating mode and the heating and water tank heating mode is determined to be the second target operating mode, the thermal efficiency in the heating mode is the thermal efficiency of the electric heating device.

[0198] In a specific embodiment, the controller 71 first obtains the current ambient temperature and the current water temperature of the water tank, and then obtains the third target operating mode corresponding to the current ambient temperature and the current water temperature based on a preset temperature-mode mapping relationship table, and finally determines the third target operating mode as the second target operating mode. Figure 18 As shown, the temperature-mode mapping relationship table includes the corresponding mapping relationships between ambient temperature, water temperature and working mode. The temperature-mode mapping relationship table can be constructed by staff through preliminary testing and analysis and stored in the controller 71.

[0199] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 that can operate in different working modes provided by an embodiment of the present invention, the controller 71 first obtains the current ambient temperature and the current water temperature of the water tank, and then obtains the third target working mode corresponding to the current ambient temperature and the current water temperature based on the preset temperature-mode mapping relationship table, and finally determines the third target working mode as the second target working mode, thereby determining the heating mode and the most energy-efficient mode among the heating and water tank heating modes as the second target working mode; in this way, the mode selection can be guided intuitively and quickly, thereby improving control efficiency.

[0200] Figure 19 This is a second simplified control flow chart of a one-to-many heat recovery multi-split air conditioning system according to an embodiment of the present invention. Figure 19As shown, in one embodiment of the present invention, when determining the first target operating mode corresponding to the first control command signal and determining that the mode with the highest energy efficiency in the first target operating mode is the second target operating mode, the controller 71 is configured as follows: when the first control command signal includes a heating command signal and a hot water command signal, but does not include a cooling command signal, determining that the first target operating mode includes a heating mode, and determining that the heating mode is the second target operating mode.

[0201] In a specific embodiment, since the heating and water tank heating modes are rarely set in some one-to-many air conditioning systems, based on this, Figure 19 As shown, a specific embodiment of the present invention provides a simplified control idea: when the first control command signal includes a heating command signal and a hot water command signal, but does not include a cooling command signal, compared to Figure 16 In the complete control idea shown, it is determined that the first target working mode includes the heating mode and the heating and water tank heating mode, and the mode with the highest energy efficiency among the heating mode and the heating and water tank heating mode is determined as the second target working mode. This simplified method omits the heating and water tank heating modes and only determines that the first target working mode includes the heating mode, and determines that the heating mode is the second target working mode; this can simplify the control process, reduce the calculation pressure, and help improve the control efficiency.

[0202] In a specific embodiment, when the first control command signal includes a heating command signal and a hot water command signal, but does not include a cooling command signal, it is determined that the first target operating mode includes a heating mode. At this time, the electric heating device is turned on in the cooling mode to heat the water in the water tank. When the heating mode is determined to be the second target operating mode, the thermal efficiency in the heating mode is the thermal efficiency of the electric heating device.

[0203] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 that can operate in different working modes provided by an embodiment of the present invention, when the first control command signal includes a heating command signal and a hot water command signal, but does not include a cooling command signal, it is determined that the first target working mode includes a heating mode, and the heating mode is determined to be the second target working mode, so that the one-to-many heat recovery multi-split air-conditioning system 100 executes the heating mode; the one-to-many heat recovery multi-split air-conditioning system 100 provided by this embodiment of the present invention can not only determine the working mode that meets the user's instructions and turn on the corresponding heating function and hot water function, but also simplify the control process, reduce computing pressure, and improve control efficiency.

[0204] In one embodiment of the present invention, the hot water command signal includes a first hot water command signal and a second hot water command signal, wherein the first hot water command signal and the second hot water command signal cannot be issued at the same time, and the heating efficiency of the working mode corresponding to the first hot water command signal is higher than or equal to the heating efficiency of the working mode corresponding to the second hot water command signal.

[0205] In a specific embodiment, an operator may send a first control command signal to the controller 71 via a terminal. The hot water command signal includes a first hot water command signal and a second hot water command signal. The first hot water command signal and the second hot water command signal cannot be issued simultaneously, and the heating efficiency of the operating mode corresponding to the first hot water command signal is greater than or equal to the heating efficiency of the operating mode corresponding to the second hot water command signal. Specifically, the terminal includes, but is not limited to, a remote control or control buttons. For example, the control buttons may include a quick-heat button and an energy-saving hot water button. When the operator presses the quick-heat button, the first hot water command signal may be issued. When the operator presses the energy-saving hot water button, the second hot water command signal may be issued.

[0206] In a specific embodiment, the user can select a heating mode according to the situation. If the user is in urgent need of hot water, a first hot water command signal can be issued to ensure heating efficiency. If the user is not in urgent need of hot water, a second hot water command signal can be issued to ensure heating energy efficiency. In this way, different water heating methods can be selected according to the situation, thereby taking into account both hot water efficiency and energy saving effects.

[0207] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention, which can operate in different working modes, the hot water command signal includes a first hot water command signal and a second hot water command signal. The first hot water command signal and the second hot water command signal cannot be issued at the same time, and the heating efficiency of the working mode corresponding to the first hot water command signal is higher than or equal to the heating efficiency of the working mode corresponding to the second hot water command signal; in this way, different water heating methods can be selected according to the situation, thereby taking into account both hot water efficiency and energy-saving effects.

[0208] Figure 20 This is a hot water control flow chart of a one-to-many heat recovery multi-split air conditioning system according to an embodiment of the present invention. Figure 20 As shown, in one embodiment of the present invention, the controller 71 is further configured to: when a first control instruction signal is received, and the first control instruction signal includes a first hot water instruction signal, control the electric heating device to heat the water in the hot water system in response to the first hot water instruction signal.

[0209] In a specific embodiment, the user can select a heating mode according to the situation. If the user urgently needs hot water, a first hot water instruction signal can be issued, and the electric heating device heats the water in the hot water system to ensure heating efficiency.

[0210] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 that can operate in different working modes provided by an embodiment of the present invention, when the controller 71 receives a first control command signal, and the first control command signal includes a first hot water command signal, in response to the first hot water command signal, the electric heating device is controlled to heat the water in the hot water system, thereby ensuring hot water efficiency.

[0211] like Figure 20 As shown, in one embodiment of the present invention, the controller 71 is configured to: when a first control instruction signal is received, and the first control instruction signal includes a second hot water instruction signal, and the second target operating mode determined based on the first control instruction signal is one of the water tank heating mode, the first cooling and water tank heating mode, the second cooling and water tank heating mode, and the heating and water tank heating mode, control the electric heating device not to heat the water in the hot water system.

[0212] In a specific embodiment, the user can select a heating mode according to the situation. If the user does not urgently need hot water, a second hot water command signal can be issued. If the second target operating mode determined based on the first control command signal is one of the water tank heating mode, the first cooling and water tank heating mode, the second cooling and water tank heating mode, and the heating and water tank heating mode, it means that the water has been heated based on the heat generated by the air-conditioning system 110. The electric heating device is controlled not to heat the water in the hot water system, thereby ensuring the energy efficiency of hot water.

[0213] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention that can operate in different working modes, when the controller 71 receives a first control command signal, and the first control command signal includes a second hot water command signal, and the second target working mode determined based on the first control command signal is one of the water tank heating mode, the first cooling and water tank heating mode, the second cooling and water tank heating mode, and the heating and water tank heating mode, the electric heating device is controlled not to heat the water in the hot water system, thereby ensuring the hot water energy efficiency.

[0214] like Figure 20 As shown, in one embodiment of the present invention, the controller 71 is configured to: when a first control instruction signal is received, and the first control instruction signal includes a second hot water instruction signal, and the second target operating mode determined based on the first control instruction signal is one of the cooling mode and the heating mode, control the electric heating device to heat the water in the hot water system.

[0215] In a specific embodiment, the user can select a heating mode according to the situation. If the user does not urgently need hot water, a second hot water command signal can be issued. If the second target operating mode determined based on the first control command signal is one of the cooling mode and the heating mode, it means that the water is not heated based on the heat generated by the air-conditioning system 110 at this time. In this case, the electric heating device is controlled to heat the water in the hot water system to ensure the hot water efficiency.

[0216] Specifically, according to the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention, which can operate in different working modes, when the controller 71 receives a first control command signal, and the first control command signal includes a second hot water command signal, and the second target working mode determined based on the first control command signal is one of the cooling mode and the heating mode, the electric heating device is controlled to heat the water in the hot water system to ensure the hot water efficiency.

[0217] In combination with the above, the one-to-many heat recovery multi-split air conditioning system 100 provided according to the embodiment of the present invention has the following beneficial effects:

[0218] First, the one-to-many heat recovery multi-split air-conditioning system 100 provided in an embodiment of the present invention adopts an intelligent control strategy to accurately adjust the system operation status according to the user's demand for cooling, heating and hot water, and automatically adjust the working mode of each module to meet the needs of different time periods and scenarios, thereby improving the user's overall experience.

[0219] Secondly, the one-to-many heat recovery multi-split air-conditioning system 100 provided according to the embodiment of the present invention can maximize the recovery of waste heat within the system and ensure efficient reuse of heat; by intelligently adjusting the operating status of the system, a high-efficiency operating mode can be selected according to real-time needs; this flexible control mechanism not only significantly reduces energy consumption, but also improves overall energy efficiency, allowing the system to maintain optimal performance under different environmental conditions and further reduce operating costs.

[0220] In summary, the one-to-many heat recovery multi-split air-conditioning system 100 that can operate in different working modes provided according to an embodiment of the present invention includes a controller 71. After receiving the first control instruction signal, the controller 71 first determines the first target working mode corresponding to the first control instruction signal from the working mode, and then determines the mode with the highest energy efficiency in the first target working mode as the second target working mode. Finally, based on the second target working mode, a second control instruction signal is generated to enable the one-to-many heat recovery multi-split air-conditioning system 100 to execute the second target working mode when receiving the second control instruction signal; the one-to-many heat recovery multi-split air-conditioning system 100 provided by this embodiment of the present invention can not only determine the working mode that meets the user's instructions and turn on the corresponding cooling function or heating function and / or hot water function, but also automatically select the mode with higher energy efficiency in the working mode that meets the user's instructions, which helps to optimize the performance and energy-saving effects, thereby improving the degree of intelligence.

[0221] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0222] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A one-to-many heat recovery multi-split air conditioning system, characterized in that: The one-to-many heat recovery multi-split air-conditioning system can operate in different working modes, wherein the working modes include: cooling mode, heating mode, water tank heating mode, first cooling and water tank heating mode, second cooling and water tank heating mode, heating and water tank heating mode, and the heat recovery amount in the first cooling and water tank heating mode is lower than the heat recovery amount in the second cooling and water tank heating mode; The one-to-many heat recovery multi-split air conditioning system further includes a controller configured to: receiving a first control command signal, wherein the first control command signal includes at least one of a cooling command signal, a heating command signal, and a hot water command signal, wherein the cooling command signal and the heating command signal cannot be issued at the same time; determining a first target operating mode corresponding to the first control instruction signal, and determining a mode with the highest energy efficiency among the first target operating modes as a second target operating mode, wherein the first target operating mode includes at least one of the operating modes; A second control instruction signal is generated based on the second target operating mode, so that the one-to-many heat recovery multi-split air-conditioning system executes the second target operating mode when receiving the second control instruction signal.

2. The one-to-many heat recovery multi-split air conditioning system according to claim 1 is characterized in that: When determining a first target operating mode corresponding to the first control instruction signal and determining that the mode with the highest energy efficiency among the first target operating modes is the second target operating mode, the controller is configured to: When the first control command signal includes the cooling command signal but does not include the heating command signal and the hot water command signal, it is determined that the first target operating mode includes the cooling mode, and the cooling mode is determined to be the second target operating mode.

3. The one-to-many heat recovery multi-split air conditioning system according to claim 1 is characterized in that: When determining a first target operating mode corresponding to the first control instruction signal and determining that the mode with the highest energy efficiency among the first target operating modes is the second target operating mode, the controller is configured to: When the first control command signal includes the heating command signal but does not include the cooling command signal and the hot water command signal, it is determined that the first target operating mode includes the heating mode, and the heating mode is determined to be the second target operating mode.

4. The one-to-many heat recovery multi-split air conditioning system according to claim 1 is characterized in that: When determining a first target operating mode corresponding to the first control instruction signal and determining that the mode with the highest energy efficiency among the first target operating modes is the second target operating mode, the controller is configured to: When the first control command signal includes the hot water command signal but does not include the cooling command signal and the heating command signal, it is determined that the first target operating mode includes the water tank separate heating mode, and the water tank separate heating mode is determined to be the second target operating mode.

5. The one-to-many heat recovery multi-split air conditioning system according to claim 1 is characterized in that: When determining a first target operating mode corresponding to the first control instruction signal and determining that the mode with the highest energy efficiency among the first target operating modes is the second target operating mode, the controller is configured to: When the first control command signal includes the cooling command signal and the hot water command signal but does not include the heating command signal, determining that the first target operating mode includes the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode, and determining that the mode with the highest energy efficiency among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode is the second target operating mode; or When the first control command signal includes the cooling command signal and the hot water command signal, but does not include the heating command signal, it is determined that the first target operating mode includes the cooling mode and the second cooling and water tank heating mode, and the mode with the highest energy efficiency among the cooling mode and the second cooling and water tank heating mode is determined as the second target operating mode.

6. The one-to-many heat recovery multi-split air conditioning system according to claim 5, characterized in that: When determining that the mode with the highest energy efficiency among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode is the second target operating mode, the controller is configured to: According to the instantaneous target or the non-instantaneous target, the mode with the highest energy efficiency among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode is determined as the second target operating mode; wherein, The instantaneous target includes the cooling capacity corresponding to each mode; The controller is configured to: If the cooling capacity of the cooling mode meets the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode meets the target cooling demand, determining the mode with the highest energy efficiency between the first cooling and water tank heating mode and the second cooling and water tank heating mode as the second target operating mode; If the cooling capacity of the cooling mode meets the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode does not meet the target cooling demand, determining the mode with the highest energy efficiency between the cooling mode and the first cooling and water tank heating mode as the second target operating mode; If the cooling capacity of the cooling mode does not meet the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode meets the target cooling demand, determining the mode with the highest energy efficiency between the first cooling and water tank heating mode and the second cooling and water tank heating mode as the second target operating mode; If the cooling capacity of the cooling mode does not meet the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode does not meet the target cooling demand, determining the mode with the largest cooling capacity among the cooling mode, the first cooling and water tank heating mode, and the second cooling and water tank heating mode as the second target operating mode; The non-instantaneous target includes the predicted energy efficiency corresponding to each mode; The controller is configured to: use a preset state prediction model to determine a first predicted energy efficiency corresponding to the refrigeration mode, a second predicted energy efficiency corresponding to the first refrigeration and water tank heating mode, and a third predicted energy efficiency corresponding to the second refrigeration and water tank heating mode, and determine that the mode corresponding to the highest energy efficiency among the first predicted energy efficiency, the second predicted energy efficiency and the third predicted energy efficiency is the second target operating mode.

7. The one-to-many heat recovery multi-split air conditioning system according to claim 5, characterized in that: When determining that the mode with the highest energy efficiency between the cooling mode and the second cooling and water tank heating mode is the second target operating mode, the controller is configured to: If the cooling capacity of the cooling mode meets the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode meets the target cooling demand, determining the mode with the highest energy efficiency between the cooling mode and the second cooling and water tank heating mode as the second target operating mode; If the cooling capacity of the cooling mode meets the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode does not meet the target cooling demand, determining the mode with the largest cooling capacity between the cooling mode and the second cooling and water tank heating mode as the second target operating mode; If the cooling capacity of the cooling mode does not meet the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode meets the target cooling demand, determining the mode with the largest cooling capacity between the cooling mode and the second cooling and water tank heating mode as the second target operating mode; If the cooling capacity of the cooling mode does not meet the target cooling demand, and the cooling capacity of the second cooling and water tank heating mode does not meet the target cooling demand, the mode with the largest cooling capacity between the cooling mode and the second cooling and water tank heating mode is determined as the second target operating mode.

8. The one-to-many heat recovery multi-split air conditioning system according to claim 1, characterized in that: When determining a first target operating mode corresponding to the first control instruction signal and determining that the mode with the highest energy efficiency among the first target operating modes is the second target operating mode, the controller is configured to: When the first control command signal includes the heating command signal and the hot water command signal but does not include the cooling command signal, determining that the first target operating mode includes the heating mode and the heating and water tank heating mode, and determining the mode with the highest energy efficiency between the heating mode and the heating and water tank heating mode as the second target operating mode; or When the first control command signal includes the heating command signal and the hot water command signal but does not include the cooling command signal, it is determined that the first target operating mode includes the heating mode, and the heating mode is determined to be the second target operating mode.

9. The one-to-many heat recovery multi-split air conditioning system according to claim 8, characterized in that: When determining that the mode with the highest energy efficiency among the heating mode and the heating and water tank heating mode is the second target operating mode, the controller is configured to: Get the current ambient temperature and the current water temperature of the water tank; Obtaining a third target operating mode corresponding to the current ambient temperature and the current water temperature based on a preset temperature-mode mapping relationship table, wherein the temperature-mode mapping relationship table includes corresponding mapping relationships between ambient temperature, water temperature, and operating mode; The third target operating mode is determined to be the second target operating mode.

10. The one-to-many heat recovery multi-split air conditioning system according to claim 1, characterized in that: The hot water command signal includes a first hot water command signal and a second hot water command signal, wherein the first hot water command signal and the second hot water command signal cannot be issued at the same time, and the heating efficiency of the working mode corresponding to the first hot water command signal is higher than or equal to the heating efficiency of the working mode corresponding to the second hot water command signal.

11. The one-to-many heat recovery multi-split air conditioning system according to claim 10, characterized in that: The controller is further configured to: When the first control instruction signal is received, and the first control instruction signal includes a first hot water instruction signal, the electric heating device is controlled to heat the water in the hot water system in response to the first hot water instruction signal.

12. The one-to-many heat recovery multi-split air conditioning system according to claim 10, characterized in that: The controller is configured to: When the first control command signal is received, and the first control command signal includes a second hot water command signal, and the second target operating mode determined based on the first control command signal is one of the water tank heating mode alone, the first cooling and water tank heating mode, the second cooling and water tank heating mode, and the heating and water tank heating mode, the electric heating device is controlled not to heat the water in the hot water system.

13. The one-to-many heat recovery multi-split air conditioning system according to claim 10, characterized in that: The controller is configured to: When the first control command signal is received, and the first control command signal includes a second hot water command signal, and the second target operating mode determined based on the first control command signal is one of the cooling mode and the heating mode, the electric heating device is controlled to heat the water in the hot water system.

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