Multi-connected air conditioning system and control method thereof

Abstract

The present disclosure discloses a multi-split air-conditioning system and a control method thereof, which relates to the technical field of air-conditioning and is used to remind the multi-split air-conditioning system of mode conflicts. In the multi-split air-conditioning system, the indoor unit and the outdoor unit are connected by a refrigerant pipe; the outdoor unit has a water outlet, and the water outlet is connected to the floor heating pipe and the water heater tank. The wire controller is used to generate a first control signal and a second control signal, the first control signal is used to transfer hot water from the outdoor unit to the floor heating pipe and / or the water heater tank; the second control signal is used to make the indoor unit cool or heat; the main controller is used to receive the first control signal and the second control signal in sequence, and determine whether the corresponding operating modes have conflicts; if not, the multi-split air-conditioning system is controlled to execute the corresponding operating mode; if so, the multi-split air-conditioning system is controlled to remind the conflict. The present disclosure is used to adjust the temperature.

Description

Technical Field

[0001] The present disclosure relates to the technical field of air conditioning, and in particular to a multi-split air conditioning system and a control method thereof. Background Art

[0002] With the development of economy and society, air conditioners (such as Figure 1 As shown in the figure, it can bring people a better experience, so it is increasingly used in various places such as entertainment, home and work. Domestic hot water and floor heating are also becoming an indispensable part of people's daily life.

[0003] Existing combined air conditioners and water heaters typically use a heat pump for hot water and the air conditioner for cooling and heating. These two systems require two external units, which are time-consuming and labor-intensive to install and maintain, and waste a significant amount of space. In areas without centralized heating, an additional floor heating system is also required. Efficiently integrating and controlling the multiple functional modes of air conditioning, floor heating, and water heaters has become a pressing issue. Summary of the Invention

[0004] An embodiment of the present disclosure provides a multi-split air-conditioning system and a control method thereof, which are used to remind the multi-split air-conditioning system of mode conflicts.

[0005] To achieve the above objectives, the embodiments of the present disclosure adopt the following technical solutions:

[0006] In a first aspect, an embodiment of the present disclosure provides a multi-split air-conditioning system, comprising: an indoor unit, an outdoor unit, a floor heating pipe, a water heater tank, a wired controller and a main controller; the indoor unit and the outdoor unit are connected via a refrigerant pipe; the outdoor unit has a water outlet, which is respectively connected to the floor heating pipe and the water heater tank; the wired controller is used to generate a first control signal and a second control signal, the first control signal being used to control the multi-split air-conditioning system to execute a first operating mode so that hot water is transmitted from the outdoor unit to the floor heating pipe and / or the water heater tank; the second control signal being used to control The multi-split air-conditioning system executes the second operating mode to enable the indoor unit to cool, or is used to control the multi-split air-conditioning system to execute the third operating mode to enable the indoor unit to heat; the main controller is used to receive the first control signal and the second control signal in sequence, and determine whether there is a conflict between the operating modes corresponding to each control signal; if there is no conflict, the main controller controls the multi-split air-conditioning system to execute the operating mode corresponding to the first control signal and the second control signal; if there is a conflict, the main controller maintains the current operating mode of the multi-split air-conditioning system and issues a conflict reminder.

[0007] An embodiment of the present disclosure provides a multi-split air-conditioning system, which includes an indoor unit, an outdoor unit, a floor heating pipe, a water heater tank, a wired controller and a main controller; the indoor unit and the outdoor unit are connected by a refrigerant pipe; the outdoor unit has a water outlet, which is respectively connected to the floor heating pipe and the water heater tank; thereby, the air conditioning function and the water heater tank in the multi-split air-conditioning system share a set of outdoor units, which greatly saves the installation space and installation cost of the multi-split air-conditioning system; and a wired controller is provided for generating a first control signal and a second control signal, the first control signal is used to control the multi-split air-conditioning system to execute a first operating mode, so that hot water is transmitted from the outdoor unit to the floor heating pipe and / or the water heater tank; the second control signal is used to control the multi-split air-conditioning system to execute a second operating mode, so that the indoor unit performs cooling, or is used to control the multi-split air-conditioning system to execute a third operating mode, so that the indoor unit performs heating, thereby achieving efficient control of the multi-split air-conditioning system and combining multiple functional modes. At the same time, a main controller is configured to receive the first control signal and the second control signal in sequence, and determine whether there is a conflict between the operating modes corresponding to the control signals; if there is no conflict, the main controller controls the multi-split air-conditioning system to execute the operating mode corresponding to the first control signal and the second control signal; if there is a conflict, the main controller maintains the current operating mode of the multi-split air-conditioning system and issues a conflict reminder, thereby providing a reminder of the conflicting modes in the multi-split air-conditioning system, thereby improving the user experience.

[0008] In some embodiments, the wired controller includes a water temperature wired controller and a room temperature wired controller; the water temperature wired controller is used to generate the first control signal, and the room temperature wired controller is used to generate the first control signal and / or the second control signal.

[0009] In some embodiments, the main controller is also used to obtain the current operating mode of the multi-split air-conditioning system; when the main controller first receives the first control signal and then receives the second control signal, and there is a conflict between the operating mode corresponding to the first control signal and the operating mode corresponding to the second control signal, and the main controller obtains that the multi-split air-conditioning system is currently in the off mode or the first operating mode, the main controller controls the multi-split air-conditioning system to output the second control signal conflict reminder; when the main controller first receives the second control signal and then receives the first control signal, and there is a conflict between the operating mode corresponding to the first control signal and the operating mode corresponding to the second control signal, and the main controller obtains that the multi-split air-conditioning system is currently in the off mode or the second operating mode, the main controller controls the multi-split air-conditioning system to output the first control signal conflict reminder.

[0010] In some embodiments, the first operating mode includes: hot water mode, floor heating mode, hot water and floor heating circulation mode; the second operating mode includes: cooling mode, dehumidification mode, comfort dehumidification mode; the third operating mode includes: heating mode; the floor heating mode, the hot water and floor heating circulation mode, and the second operating mode are conflicting operating modes.

[0011] In some embodiments, the multi-split air-conditioning system further includes: a three-way valve; the three-way valve is connected to the water outlet, the water heater tank and the floor heating pipe; when the multi-split air-conditioning system executes the first operating mode and the first control signal causes hot water to be transmitted from the outdoor unit to the floor heating pipe, the main controller controls the three-way valve and the floor heating pipe to be in a connected state; when the multi-split air-conditioning system executes the first operating mode and the first control signal causes hot water to be transmitted from the outdoor unit to the water heater tank, the main controller controls the three-way valve and the water heater tank to be in a connected state.

[0012] In the second aspect, an embodiment of the present disclosure provides a control method for a multi-split air-conditioning system, which includes: a wired controller generates a first control signal and a second control signal respectively; the first control signal is used to control the multi-split air-conditioning system to execute a first operating mode, so that hot water is transmitted from the outdoor unit to the floor heating pipe or the water heater tank; the second control signal is used to control the multi-split air-conditioning system to execute a second operating mode, so that the indoor unit performs cooling, or is used to control the multi-split air-conditioning system to execute a third operating mode, so that the indoor unit performs heating; the main controller receives the first control signal and the second control signal in sequence; and determines whether there is a conflict between the operating modes corresponding to each control signal; if there is no conflict, the main controller controls the multi-split air-conditioning system to execute the operating mode corresponding to the first signal and the second signal; if there is a conflict, the main controller maintains the current operating mode of the multi-split air-conditioning system and issues a conflict reminder.

[0013] In some embodiments, the wired controller includes a water temperature wired controller and a room temperature wired controller; the wired controller generates a first control signal and a second control signal including: the water temperature wired controller generates the first control signal, and the room temperature wired controller generates the first control signal and / or the second control signal.

[0014] In some embodiments, the first operating mode includes: hot water mode, floor heating mode, hot water and floor heating circulation mode; the second operating mode includes: cooling mode, dehumidification mode, comfort dehumidification mode; the third operating mode includes: heating mode; the floor heating mode, the hot water and floor heating circulation mode, and the second operating mode are conflicting operating modes.

[0015] In some embodiments, after the main controller receives the first control signal and the second control signal in succession, the control method further includes: the main controller obtains the current operating mode of the multi-split air-conditioning system; when the main controller first receives the first control signal and then receives the second control signal, and there is a conflict between the operating mode corresponding to the first control signal and the operating mode corresponding to the second control signal, and the main controller obtains that the multi-split air-conditioning system is currently in the off mode or the first operating mode, the main controller controls the multi-split air-conditioning system to output the second control signal conflict reminder; when the main controller first receives the second control signal and then receives the first control signal, and there is a conflict between the operating mode corresponding to the first control signal and the operating mode corresponding to the second control signal, and the main controller obtains that the multi-split air-conditioning system is currently in the off mode or the second operating mode, the main controller controls the multi-split air-conditioning system to output the first control signal conflict reminder.

[0016] In some embodiments, one of the floor heating pipe and the water heater tank is a first target device, and the other is a second target device; when the wired controller generates the first control signal, and the first control signal is used to control the multi-split air-conditioning system to execute the hot water and floor heating circulation mode in the first operating mode, after the main controller receives the first control signal, the control method includes: the main controller controls the multi-split air-conditioning system so that hot water is transmitted from the outdoor unit to the first target device; after the water temperature of the first target device reaches a first preset temperature, the main controller controls the multi-split air-conditioning system so that hot water is transmitted from the outdoor unit to the second target device; after the water temperature in the second target device reaches a second preset temperature, the main controller obtains the water temperature in the first target device, and determines whether the water temperature in the first target device is less than the first preset temperature. If so, the main controller controls the multi-split air-conditioning system so that hot water is transmitted from the outdoor unit to the first target device; if not, the main controller controls the outdoor unit to shut down.

[0017] The beneficial effects described in the second aspect of the present disclosure can be analyzed by referring to the beneficial effects of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions of the present disclosure, the following briefly introduces the drawings required for use in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure, and those skilled in the art can also derive other drawings based on these drawings. Furthermore, the drawings described below should be considered schematic diagrams and are not intended to limit the actual dimensions of the products involved in the embodiments of the present disclosure.

[0019] Figure 1 A schematic diagram of an air conditioner in the related art;

[0020] Figure 2 A structural diagram of a multi-split air conditioning system in some embodiments of the present disclosure;

[0021] Figure 3 A structural diagram of another multi-split air conditioning system in some embodiments of the present disclosure;

[0022] Figure 4 A diagram showing a correspondence between a first control signal and an operating mode in a multi-split air conditioning system according to some embodiments of the present disclosure;

[0023] Figure 5 A diagram showing a correspondence between a second control signal and an operating mode in a multi-split air conditioning system according to some embodiments of the present disclosure;

[0024] Figure 6 A flow chart of a control method for a multi-split air conditioning system provided in some embodiments of the present disclosure;

[0025] Figure 7 Another flow chart of a control method for a multi-split air conditioning system provided in some embodiments of the present disclosure;

[0026] Figure 8 Another flow chart of a method for controlling a multi-split air conditioning system according to some embodiments of the present disclosure;

[0027] Figure 9 Another flow chart of a method for controlling a multi-split air conditioning system according to some embodiments of the present disclosure;

[0028] Figure 10 Another flow chart of a control method for a multi-split air conditioning system provided in some embodiments of the present disclosure. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.

[0030] Unless the context requires otherwise, throughout the specification and claims, the term "including" is to be interpreted as having an open, inclusive meaning, that is, "including, but not limited to." In the description of the specification, the terms "one embodiment," "some embodiments," "exemplary," or "such as" are intended to indicate that specific features, structures, materials, or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials, or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0031] 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 number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this disclosure, unless otherwise specified, "plurality" means two or more.

[0032] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, or electrical connections; direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances.

[0033] The use of "configured to" herein is intended to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0034] Some embodiments of the present disclosure provide a multi-split air conditioning system 100, such as Figure 2 As shown, the multi-split air conditioning system 100 can not only realize the functions of air conditioning, but also realize the functions of floor heating and hot water. The multi-split air conditioning system 100 includes: an indoor unit 10, an outdoor unit 20, a floor heating pipe 30, a water heater tank 40, a wired controller 50 and a main controller 60.

[0035] Illustratively, the multi-split air conditioning system 100 includes a plurality of indoor units 10 and a plurality of floor heating pipes 30 , wherein the indoor units 10 and the floor heating pipes 30 are arranged in a one-to-one correspondence.

[0036] For example, one indoor unit 10 and one floor heating pipe 30 are provided in each room.

[0037] For example, the indoor unit 10 and the outdoor unit 20 are connected via a refrigerant pipe. The refrigerant pipe is used to transmit the refrigerant.

[0038] For example, Figure 3 As shown, the outdoor unit 20 has a water outlet, which is connected to the floor heating pipe 30 and the water heater tank 40 respectively; for example, the water outlet of the outdoor unit 20 can be connected to the water heater tank 40 and the floor heating pipe 30 through a water pipe.

[0039] Exemplarily, the wired controller 50 is used to generate a first control signal and a second control signal, the first control signal being used to control the multi-split air-conditioning system 100 to execute a first operating mode so that hot water is transmitted from the outdoor unit 20 to the floor heating pipe 30 or the water heater tank 40; the second control signal being used to control the multi-split air-conditioning system 100 to execute a second operating mode so that the indoor unit 10 performs cooling, or to control the multi-split air-conditioning system 100 to execute a third operating mode so that the indoor unit 10 performs heating.

[0040] For example, the user operates the wired controller 50 so that the wired controller 50 generates a first control signal, and the first control signal controls the outdoor unit 20 to heat water, and then transmits the heated water to the floor heating pipe 30 or the water heater tank 40 .

[0041] For another example, the user operates the wired controller 50 so that the wired controller 50 generates a second control signal, and the second control signal controls the indoor unit 10 to perform cooling or heating.

[0042] Among them, when the second control signal controls the multi-split air-conditioning system 100 to execute the second operating mode, the indoor unit 10 can be cooled, and hot water can also be transmitted from the outdoor unit 20 to the floor heating pipe 30 to achieve a comfortable dehumidification mode.

[0043] Exemplarily, the main controller 60 is configured to receive the first control signal and the second control signal in sequence, and determine whether there is a conflict between the operating modes corresponding to the control signals.

[0044] For example, the corresponding relationship between the control signal and the operation mode and the corresponding components of the multi-split air conditioning system controlled by it is as follows: Figure 4 and Figure 5 As shown. The first operating mode corresponds to hot water being transferred from the outdoor unit 20 to the floor heating pipe 30 or the water heater tank 40. The first operating mode may include: hot water mode, floor heating mode, and hot water and floor heating circulation mode. The second operating mode corresponds to cooling of the indoor unit 10. The second operating mode may include: dehumidification mode, cooling mode, and comfort dehumidification mode. The third operating mode corresponds to heating of the indoor unit 10. The third operating mode may include: heating mode.

[0045] It can be understood that the second control signal controls the multi-split air-conditioning system 100 to execute the second operation mode or the third operation mode, which is the same as the working principle of the heating mode, dehumidification mode, and cooling mode of a common air conditioner.

[0046] For example, in cooling or dehumidification mode, high-temperature, high-pressure gaseous refrigerant, compressed by the compressor, enters the outdoor unit. This high-temperature, high-pressure gaseous refrigerant condenses into high-temperature, high-pressure liquid refrigerant in the outdoor unit. After passing through a throttling element, it becomes low-temperature, low-pressure liquid refrigerant, enters the indoor unit, evaporates, and finally returns to the compressor, completing the entire refrigeration cycle. In cooling mode, the outdoor unit acts as a condenser, while the indoor unit acts as an evaporator.

[0047] In heating mode, the refrigerant is pressurized by the compressor and becomes a high-temperature, high-pressure gas. It enters the indoor unit, condenses and liquefies, releasing heat to become a liquid, and at the same time heats the indoor air, thereby achieving the purpose of raising the indoor temperature.

[0048] The comfort dehumidification mode described above can be considered a combination of dehumidification and floor heating. While operating in dehumidification mode, the indoor temperature will drop slightly, while operating in floor heating mode will slightly increase the temperature, making the indoor environment more comfortable in dehumidification mode. At this time, the indoor unit of the multi-split air conditioning system provides cooling, while the outdoor unit transfers hot water to the floor heating pipes, achieving comfort dehumidification mode.

[0049] When the main controller receives the first control signal and / or the second control signal, and the operating modes corresponding to the control signals overlap, an execution conflict may occur in the indoor unit or the outdoor unit of the multi-split air-conditioning system. Therefore, the main controller controls the multi-split air-conditioning system to output a conflict reminder. Alternatively, when the operating mode corresponding to the control signal received by the main controller is a combination of the second operating mode (any one of the cooling mode, dehumidification mode, and comfort dehumidification mode) and the floor heating mode, and when the operating mode corresponding to the control signal received by the main controller is a combination of the second operating mode (any one of the cooling mode, dehumidification mode, and comfort dehumidification mode) and the hot water and floor heating circulation mode, the main controller controls the multi-split air-conditioning system to output a conflict reminder.

[0050] For example, when the main controller receives a first control signal and controls the multi-split air-conditioning system to execute the floor heating mode, the main controller also receives a second control signal corresponding to the comfort dehumidification mode. Since the operating mode of the outdoor unit of the multi-split air-conditioning system in the comfort dehumidification mode is the same as the operating mode of the outdoor unit in the above-mentioned floor heating mode, the main controller determines that there is a conflict between the operating modes corresponding to the first control signal and the second control signal, and controls the multi-split air-conditioning system to output a conflict reminder.

[0051] The conflict reminder may be a sound reminder from the wired controller 50 or a text reminder displayed on the wired controller 50. Thus, the user may be reminded to cancel or modify the control signal to avoid unnecessary damage to the multi-split air conditioning system.

[0052] For another example, when there is no conflict between the operating modes corresponding to the control signals received by the main controller 60 , the main controller 60 controls the multi-split air-conditioning system 100 to execute the operating modes corresponding to the first control signal and the second control signal.

[0053] The present disclosure provides a multi-split air-conditioning system, which includes an indoor unit, an outdoor unit, a floor heating pipe, a water heater tank, a wire controller and a main controller; the indoor unit and the outdoor unit are connected by a refrigerant pipe; the outdoor unit has a water outlet, which is connected to the floor heating pipe and the water heater tank respectively; thereby, the air conditioning function and the water heater tank in the multi-split air-conditioning system share a set of outdoor units, which greatly saves the installation space and installation cost of the multi-split air-conditioning system; and a wire controller is provided for generating a first control signal and a second control signal, the first control signal is used to control the multi-split air-conditioning system to execute a first operating mode, so that hot water is transmitted from the outdoor unit to the floor heating pipe and / or the water heater tank; the second control signal is used to control the multi-split air-conditioning system to execute a second operating mode, so that the indoor unit performs cooling, or is used to control the multi-split air-conditioning system to execute a third operating mode, so that the indoor unit performs heating, thereby realizing efficient control of the multi-split air-conditioning system and realizing the combination of multiple functional modes. At the same time, a main controller is configured to receive a first control signal and a second control signal in sequence, and determine whether there is a conflict between the operating modes corresponding to the control signals; if there is no conflict, the main controller controls the multi-split air-conditioning system to execute the operating mode corresponding to the first control signal and the second control signal; if there is a conflict, the main controller maintains the current operating mode of the multi-split air-conditioning system and issues a conflict reminder, so that the user can use the multi-split air-conditioning system to realize the combined use of multiple operating modes, and in the event of an operating conflict, a conflict reminder can be issued to improve the user experience.

[0054] In some embodiments, the wired controller 50 includes a water temperature wired controller 51 and a room temperature wired controller 52 .

[0055] For example, each room is equipped with a corresponding wired controller 50 .

[0056] In some examples, the water temperature wired controller 51 is used to generate a first control signal, and the room temperature wired controller 52 is used to generate a first control signal and / or a second control signal.

[0057] Exemplarily, the water temperature wired controller 51 can generate a first control signal, thereby controlling the multi-split air-conditioning system 100 to execute a first operating mode, such as a hot water mode or a floor heating mode or a hot water and floor heating circulation mode, after the main controller receives the first control signal.

[0058] Exemplarily, the room temperature wired controller 52 can generate a first control signal, thereby controlling the multi-split air conditioning system 100 to execute a first operating mode, such as a hot water mode or a floor heating mode or a hot water and floor heating circulation mode, after the main controller receives the first control signal.

[0059] Exemplarily, the room temperature wire controller 52 can generate a second control signal, thereby controlling the multi-split air-conditioning system 100 to execute the second operating mode or the third operating mode, such as cooling mode, dehumidification mode, heating mode or comfort dehumidification mode, after the main controller receives the first control signal.

[0060] For example, the room temperature wired controller 52 may generate a first control signal and a second control signal, thereby controlling the multi-split air conditioning system 100 to execute at least one of the first operating mode, the second operating mode, and the third operating mode.

[0061] The above configuration allows the user to directly operate the water temperature wired controller 51 to control the multi-split air conditioning system 100 to execute the first operating mode. Alternatively, the user can use the room temperature wired controller 52 to control the multi-split air conditioning system, thereby enabling a combination of multiple operating modes for the multi-split air conditioning system 100. This provides more diverse user scenarios and a wider range of applicable scenarios for the multi-split air conditioning system 100.

[0062] In some embodiments, the main controller 60 is further configured to obtain the current operating mode of the multi-split air conditioning system 100 .

[0063] In some examples, the main controller 60 first receives a first control signal and then receives a second control signal. There is a conflict between the operating mode corresponding to the first control signal and the operating mode corresponding to the second control signal. When the main controller 60 obtains that the multi-split air-conditioning system 100 is currently in the off mode or the first operating mode, the main controller 60 controls the multi-split air-conditioning system 100 to output a second control signal conflict reminder.

[0064] For example, when the multi-split air-conditioning system 100 is currently in the off mode, that is, the multi-split air-conditioning system 100 is not currently running any of the above-mentioned operating modes.

[0065] In other examples, when the main controller 60 first receives the second control signal and then receives the first control signal, there is a conflict between the operating mode corresponding to the first control signal and the operating mode corresponding to the second control signal, and the main controller 60 obtains that the multi-split air-conditioning system 100 is currently in the off mode or the second operating mode, the main controller 60 controls the multi-split air-conditioning system 100 to output the first control signal conflict reminder.

[0066] That is, when the multi-split air conditioning system 100 is currently in the off mode and the main controller 60 receives a first control signal and a second control signal, and there is a conflict between the operating mode corresponding to the first control signal and the operating mode corresponding to the second control signal, the main controller 60 controls the multi-split air conditioning system 100 to issue a conflict reminder for the control signal received later. If the current operating mode of the multi-split air conditioning system 100 is the same as the operating mode corresponding to a control signal received by the main controller 60, the main controller 60 issues a conflict reminder for the remaining operating modes corresponding to the other control signals received, thereby improving the user experience.

[0067] In some embodiments, as Figure 3 As shown, the multi-split air conditioning system 100 further includes a three-way valve 70. The three-way valve 70 is connected to the water outlet, the water heater tank 40 and the floor heating pipe 30.

[0068] For example, when the multi-split air-conditioning system 100 executes the first operating mode and the first control signal causes hot water to be transmitted from the outdoor unit 20 to the floor heating pipe 30, the main controller 60 controls the three-way valve 70 and the floor heating pipe 30 to be in a connected state; when the multi-split air-conditioning system 100 executes the first operating mode and the first control signal causes hot water to be transmitted from the outdoor unit 20 to the water heater tank 40, the main controller 60 controls the three-way valve 70 and the water heater tank 40 to be in a connected state.

[0069] For example, the three-way valve 70 can open the pipeline between the hot water output from the outdoor unit 20 and the water heater tank 40, or open the pipeline between the hot water output from the outdoor unit 20 and the floor heating according to the operation mode of the multi-split air conditioning system 100.

[0070] It is understandable that if Figure 2 As shown, the multi-split air conditioning system 100 further includes multiple electric heating actuators 80. These actuators 80 receive control signals from the wired controller 50 to control the opening and closing of the floor heating pipes. Each room's floor heating system corresponds to an electric heating actuator, allowing each actuator to be individually controlled by the wired controller, enabling individual room heating modes to be activated for user convenience.

[0071] like Figure 3 As shown, a first temperature sensor 91 is further provided in the water tank 40 of the water heater. The first temperature sensor 91 can obtain the temperature of the hot water in the water tank 40 of the water heater.

[0072] The refrigerant pipeline is provided with an electronic expansion valve 21 for controlling the inflow or outflow of the refrigerant.

[0073] The water inlet of the outdoor unit 20 can be connected to the water outlet of the floor heating pipe 30 through a water pipe, or it can be connected to a water source, and the water is transported to the outdoor unit 20 by a water pump to heat the water.

[0074] The water pump here can be a DC pump or an AC pump.

[0075] A second temperature sensor 92 may be provided at the water inlet of the outdoor unit 20 to obtain the temperature of the water entering the outdoor unit 20. A third temperature sensor 93 may be provided at the water outlet of the outdoor unit 20 to obtain the temperature of the water output by the outdoor unit 20.

[0076] The outdoor unit 20 may include a heat exchanger, which may be a double-tube heat exchanger.

[0077] The outdoor unit 20 may further include a compressor and a fan. The compressor is used to compress the refrigerant. The fan is used to dissipate heat from the outdoor unit 20.

[0078] The present disclosure also provides a control method for a multi-split air conditioning system 100, which can be used to control the multi-split air conditioning system 100 in the above embodiment. Figure 6 As shown, the control method includes S100 to S200.

[0079] S100, the wired controller 50 generates a first control signal and a second control signal respectively; the first control signal is used to control the multi-split air-conditioning system 100 to execute a first operating mode, so that hot water is transmitted from the outdoor unit 20 to the floor heating pipe 30 or the water heater tank 40; the second control signal is used to control the multi-split air-conditioning system 100 to execute a second operating mode, so that the indoor unit 10 performs cooling, or is used to control the multi-split air-conditioning system 100 to execute a third operating mode, so that the indoor unit 10 performs heating.

[0080] For example, in the first operation mode, water is input from the water pump into the outdoor unit 20 , is heated by the outdoor unit 20 , and is then transferred to the floor heating or water heater tank 40 .

[0081] In the second operating mode, the indoor unit 10 cooperates with the outdoor unit 20 to achieve cooling of the multi-split air conditioning system 100. It is understood that cooling here includes cooling mode and dehumidification mode.

[0082] In the third operating mode, the indoor unit 10 cooperates with the outdoor unit 20 to implement the heating mode of the multi-split air-conditioning system 100 .

[0083] At step S200, the main controller 60 receives a first control signal and a second control signal, and determines whether the operating modes corresponding to the control signals conflict. If no conflict exists, the main controller 60 controls the multi-split air conditioning system 100 to execute the operating mode corresponding to the first and second signals. If a conflict exists, the main controller 60 maintains the current operating mode of the multi-split air conditioning system 100 and issues a conflict notification.

[0084] In some examples, the first and second operating modes can be pre-set as conflicting operating modes. The first operating mode includes: hot water mode, floor heating mode, and hot water and floor heating circulation mode. The second operating mode includes: cooling mode, dehumidification mode, and comfort dehumidification mode. The third operating mode includes: heating mode.

[0085] For example, when the operating modes corresponding to the control signals received by the main controller 60 are the first operating mode and the second operating mode, the main controller 60 determines that the control signals are in conflict. Then, the main controller 60 does not adjust the operating status of the current multi-split air-conditioning system 100, and issues a conflict reminder for the received first control signal or the second control signal.

[0086] For example, the conflict reminder may be that the main controller 60 sends a conflict reminder to the wired controller 50 , and the wired controller 50 sends a sound reminder and a text reminder.

[0087] In an embodiment of the present disclosure, a control method for a multi-split air-conditioning system is provided. First, a wired controller generates a first control signal and a second control signal. The first control signal is used to control the multi-split air-conditioning system to execute a first operating mode so that hot water is transmitted from the outdoor unit to the floor heating pipe and / or the water heater tank. The second control signal is used to control the multi-split air-conditioning system to execute a second operating mode so that the indoor unit performs cooling, or to control the multi-split air-conditioning system to execute a third operating mode so that the indoor unit performs heating. Then, a main controller receives the first control signal and the second control signal in sequence, and determines whether there is a conflict between the operating modes corresponding to the control signals. If there is no conflict, the main controller controls the multi-split air-conditioning system to execute the operating mode corresponding to the first control signal and the second control signal. If there is a conflict, the main controller maintains the current operating mode of the multi-split air-conditioning system and issues a conflict reminder, so that a user can use the multi-split air-conditioning system to realize the combined use of multiple operating modes. In the event of an operating conflict, a conflict reminder can be issued to improve the user experience.

[0088] In some embodiments, the wired controller 50 includes a water temperature wired controller 51 and a room temperature wired controller 52. The wired controller 50 generates the first control signal and the second control signal, including: the water temperature wired controller 51 generates the first control signal, and the room temperature wired controller 52 generates the first control signal and / or the second control signal.

[0089] In some embodiments, as Figure 7 As shown, after the main controller 60 receives the first control signal and the second control signal in succession, the control method further includes:

[0090] S300: The main controller 60 obtains the current operating mode of the multi-split air conditioning system 100.

[0091] Exemplarily, the current operating mode of the multi-split air-conditioning system 100 includes: an off mode, and at least one of a hot water mode, a floor heating mode, a cooling mode, a dehumidification mode, a heating mode, and a comfort dehumidification mode.

[0092] S400a, when the main controller 60 first receives the first control signal and then receives the second control signal, there is a conflict between the operating mode corresponding to the first control signal and the operating mode corresponding to the second control signal, and the main controller 60 obtains that the multi-split air-conditioning system 100 is currently in the off mode or the first operating mode, the main controller 60 controls the multi-split air-conditioning system 100 to output the second control signal conflict reminder.

[0093] For example, when the operating mode corresponding to the first control signal is floor heating mode, the operating mode corresponding to the second control signal is cooling mode, and the current multi-split air-conditioning system is in floor heating mode, the main controller 60 controls the multi-split air-conditioning system to output a second control signal conflict reminder.

[0094] For example, when the operating mode corresponding to the first control signal is the floor heating mode, the operating mode corresponding to the second control signal is the dehumidification mode, and the current multi-split air-conditioning system 100 is in the floor heating mode, the main controller 60 controls the multi-split air-conditioning system 100 to output the second control signal conflict reminder.

[0095] S400b, when the main controller 60 first receives the second control signal and then receives the first control signal, there is a conflict between the operating mode corresponding to the first control signal and the operating mode corresponding to the second control signal, and the main controller 60 obtains that the multi-split air-conditioning system 100 is currently in the off mode or the second operating mode, the main controller 60 controls the multi-split air-conditioning system 100 to output the first control signal conflict reminder.

[0096] For example, when the operating mode corresponding to the second control signal is cooling mode, the operating mode corresponding to the first control signal is floor heating mode, and the current multi-split air-conditioning system 100 is in cooling mode, the main controller 60 controls the multi-split air-conditioning system 100 to output the first control signal conflict reminder.

[0097] For example, when the operating mode corresponding to the second control signal is the dehumidification mode, the operating mode corresponding to the first control signal is the floor heating mode, and the current multi-split air-conditioning system 100 is in the dehumidification mode, the main controller 60 controls the multi-split air-conditioning system 100 to output the first control signal conflict reminder.

[0098] In some embodiments, one of the floor heating pipe 30 and the water heater tank 40 is a first target device, and the other is a second target device.

[0099] When the online controller 50 generates a first control signal, the first control signal is used to control the multi-split air conditioning system 100 to execute the hot water and floor heating circulation mode in the first operation mode. After the main controller 60 receives the first control signal, Figure 8 As shown, the control method includes S500 to S700.

[0100] In step S500 , the main controller 60 controls the multi-split air conditioning system 100 so that hot water is transferred from the outdoor unit 20 to the first target device.

[0101] Illustratively, the above-mentioned hot water and floor heating circulation mode means that the operation mode to be executed by the multi-split air-conditioning system 100 is a parallel mode of the floor heating mode and the hot water mode.

[0102] Since the outdoor unit 20 of the multi-split air conditioning system 100 can only provide hot water to one of the floor heating pipes 30 and the water heater tank 40 at the same time, when the multi-split air conditioning system 100 operates in the hot water and floor heating circulation mode, the user can pre-set the priority between the hot water mode and the floor heating mode. For example, the default state can be set to prioritize the hot water mode, and the floor heating mode will be operated after the hot water in the water heater tank 40 reaches the user's requirement. Of course, the default state can also be set to prioritize the floor heating mode.

[0103] For the convenience of description, the following description is made by taking the default state of setting the hot water mode as an example. Therefore, the first target device is the water heater tank 40, and the second target device is the floor heating pipe 30.

[0104] During the execution of this step, the multi-split air-conditioning system 100 is in the hot water mode.

[0105] S600: After the water temperature of the first target device reaches a first preset temperature, the main controller 60 controls the multi-split air conditioning system 100 so that hot water is transferred from the outdoor unit 20 to the second target device.

[0106] For example, the main controller 60 obtains the temperature of the first temperature sensor on the water heater tank 40 and compares it with a first preset temperature. If the temperature of the first temperature sensor is lower than the first preset temperature, the main controller 60 continues to control the outdoor unit 20 to transfer hot water to the water heater tank 40. At this point, the three-way valve 70 connects the water outlet of the outdoor unit 20 with the water heater tank 40 until the temperature of the first temperature sensor is greater than or equal to the first preset temperature. Of course, the temperature of the hot water flowing out of the water outlet of the outdoor unit 20 is obtained by the third temperature sensor. The outdoor unit 20 heats the water flowing into the outdoor unit 20, maintaining the temperature of the hot water flowing out of the outdoor unit 20 above the first preset temperature. This prevents temperature loss during the hot water transfer process.

[0107] During the execution of this step, the multi-split air-conditioning system 100 is in the floor heating mode.

[0108] S700, after the water temperature in the second target device reaches the second preset temperature, the main controller 60 obtains the water temperature in the first target device and determines whether the water temperature of one of the first target devices is less than the first preset temperature. If so, the main controller 60 controls the multi-split air-conditioning system 100 so that hot water is transmitted from the outdoor unit 20 to the first target device; if not, the main controller 60 controls the outdoor unit 20 to shut down.

[0109] Exemplarily, the main controller 60 obtains the actual water temperature of the floor heating pipe 30. The main controller 60 compares the actual water temperature with the second preset temperature. When the actual water temperature is lower than the second preset temperature, the multi-connected air-conditioning system 100 continues to maintain the floor heating mode, and the three-way valve 70 connects the water outlet of the outdoor unit 20 with the floor heating pipe 30. When the actual water temperature of the water heating pipe is greater than or equal to the second preset temperature, the main controller 60 obtains the temperature of the first temperature sensor of the water heater tank 40, and the main controller 60 compares the temperature of the first temperature sensor with the first preset temperature. If the temperature of the first temperature sensor is lower than the first preset temperature, the main controller 60 controls the multi-connected air-conditioning system 100 to switch to the hot water mode. If the temperature of the first temperature sensor is greater than or equal to the first preset temperature, the multi-connected air-conditioning system 100 controls the outdoor unit 20 to shut down, that is, the outdoor unit 20 does not work.

[0110] It is understandable that the downtime of the outdoor unit 20 can be 3 minutes. After 3 minutes, the main controller 60 obtains the actual water temperature of the water heating pipe and the water heater tank 40 respectively, and continues to circulate according to the above sequence of S500 to S700 until the user cancels the hot water and floor heating circulation mode.

[0111] By adopting the above-mentioned control method, the floor heating mode and the hot water mode can be operated in parallel, so that the outdoor unit 20 can circulate hot water for the water heater tank 40 and the floor heating pipe 30, reducing the actual power usage of the outdoor unit 20, making the utilization rate of the outdoor unit 20 higher, more energy-saving and environmentally friendly, and avoiding the situation where hot water and floor heating cannot meet usage requirements.

[0112] Of course, the above is only an introduction to the control method for simultaneous execution of hot water mode and floor heating mode (that is, the hot water and floor heating circulation mode mentioned above). The control method disclosed in the present invention is applicable to a combination of multiple operating modes. The following is a brief introduction to the control methods of some parallel modes.

[0113] For example, the current operation mode of the multi-split air conditioning system 100 is the first operation mode. Figure 9 As shown, the wired controller 50 generates a first control signal and a second control signal, respectively. The main controller 60 receives the first control signal and the second control signal and determines whether the operating mode corresponding to each control signal is the floor heating mode or the second operating mode. The main controller 60 then determines whether the operating mode corresponding to the second control signal is the comfort dehumidification mode.

[0114] If yes, the main controller 60 obtains the current operating mode of the multi-split air conditioning system 100 and continues to determine whether the multi-split air conditioning system 100 is currently in the floor heating mode;

[0115] If so, the current operation mode of the multi-split air-conditioning system 100 is maintained, and a conflict reminder is output for the second control signal corresponding to the comfort dehumidification mode.

[0116] If not, the multi-split air-conditioning system 100 is controlled to execute the comfort dehumidification mode, and a conflict reminder is output for the first control signal corresponding to the floor heating mode.

[0117] If not, the main controller 60 obtains the current operating mode of the multi-split air-conditioning system 100 and continues to determine whether the multi-split air-conditioning system 100 is currently in the floor heating mode;

[0118] If so, the current operation mode of the multi-split air-conditioning system 100 is maintained, and a conflict reminder is output for the second control signal corresponding to the second operation mode.

[0119] If not, the multi-split air-conditioning system 100 is controlled to execute the second operation mode, and a conflict reminder is output for the first control signal corresponding to the floor heating mode.

[0120] For another example, the current operation mode of the multi-split air conditioning system 100 is the first operation mode, such as Figure 10As shown, the wired controller 50 generates a first control signal and a second control signal, respectively. The main controller 60 receives the first control signal and the second control signal and determines whether the operating mode corresponding to each control signal is the hot water mode or the second operating mode. The main controller 60 then determines whether the operating mode corresponding to the second control signal is the comfort dehumidification mode.

[0121] If yes, the main controller 60 obtains the current operating mode of the multi-split air conditioning system 100 and continues to determine whether the multi-split air conditioning system 100 is currently in the hot water mode;

[0122] If so, the current operating mode of the multi-split air-conditioning system 100 is maintained, and a conflict reminder is output for the second control signal corresponding to the comfort dehumidification mode.

[0123] If not, the multi-split air-conditioning system 100 is controlled to execute the comfort dehumidification mode, and a conflict reminder is output for the first control signal corresponding to the hot water mode.

[0124] If not, the main controller 60 obtains the current operating mode of the multi-split air-conditioning system 100 and continues to determine whether the multi-split air-conditioning system 100 is currently in the hot water mode;

[0125] If so, the multi-split air conditioning system 100 is controlled to shut down and switch to the second operating mode (cooling mode or dehumidification mode) without issuing a conflict reminder. The multi-split air conditioning system 100 is also controlled to simultaneously operate in the hot water mode corresponding to the first control signal. It can be understood that the main controller controls the opening of the electronic expansion valve, allowing the outdoor unit to use part of the refrigerant to heat water and transfer the hot water to the water heater tank.

[0126] If not, the multi-split air conditioning system 100 is controlled to execute the second operating mode (cooling mode or dehumidification mode) without conflict reminder, and the multi-split air conditioning system 100 is controlled to simultaneously run the hot water mode corresponding to the first control signal.

[0127] By adopting the above control method, the optimal control mode of the multi-split air conditioning system 100 can be achieved, making it convenient for users to switch modes.

[0128] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0129] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present disclosure shall be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure shall be based on the scope of protection of the claims. In the description of this specification, specific features, structures, materials or characteristics may be combined in any appropriate manner in any one or more embodiments or examples.

Claims

1. A multi-split air conditioning system, characterized in that: include: Indoor unit, outdoor unit, floor heating pipes, water heater tank, wired controller and main controller; The indoor unit and the outdoor unit are connected via a refrigerant pipe; The outdoor unit has a water outlet, which is connected to the floor heating pipe and the water tank of the water heater respectively; The wired controller is used to generate a first control signal and a second control signal, wherein the first control signal is used to control the multi-split air-conditioning system to execute a first operating mode so that hot water is transferred from the outdoor unit to the floor heating pipe and / or the water heater tank; the second control signal is used to control the multi-split air-conditioning system to execute a second operating mode so that the indoor unit performs cooling, or to control the multi-split air-conditioning system to execute a third operating mode so that the indoor unit performs heating; The main controller is used to receive the first control signal and the second control signal in sequence, and determine whether there is a conflict between the operating modes corresponding to the control signals; If there is no conflict, the main controller controls the multi-split air conditioning system to execute the operation mode corresponding to the first control signal and the second control signal; If there is a conflict, the main controller maintains the current operating mode of the multi-split air-conditioning system and issues a conflict reminder; wherein, the first operating mode includes: hot water mode, floor heating mode, hot water and floor heating circulation mode; the second operating mode includes: cooling mode, dehumidification mode, comfort dehumidification mode; the third operating mode includes: heating mode; the floor heating mode, the hot water and floor heating circulation mode, and the second operating mode are conflicting operating modes.

2. The multi-split air conditioning system according to claim 1, characterized in that: The wired controller includes a water temperature wired controller and a room temperature wired controller; The water temperature wired controller is used to generate the first control signal, and the room temperature wired controller is used to generate the first control signal and / or the second control signal.

3. The multi-split air conditioning system according to claim 2, characterized in that: The main controller is also used to obtain the current operating mode of the multi-split air conditioning system; When the main controller receives the first control signal first and then receives the second control signal, and there is a conflict between the operating mode corresponding to the first control signal and the operating mode corresponding to the second control signal, and the main controller obtains that the multi-split air-conditioning system is currently in the off mode or the first operating mode, the main controller controls the multi-split air-conditioning system to output a conflict reminder of the second control signal; When the main controller first receives the second control signal and then receives the first control signal, there is a conflict between the operating mode corresponding to the first control signal and the operating mode corresponding to the second control signal, and the main controller obtains that the multi-split air-conditioning system is currently in the off mode or the second operating mode, the main controller controls the multi-split air-conditioning system to output the first control signal conflict reminder.

4. The multi-split air conditioning system according to claim 1, characterized in that: The multi-split air conditioning system further includes: a three-way valve; the three-way valve is connected to the water outlet, the water heater tank and the floor heating pipe; When the multi-split air conditioning system executes the first operation mode and the first control signal causes hot water to be transferred from the outdoor unit to the floor heating pipe, the main controller controls the three-way valve to be in a communication state with the floor heating pipe; When the multi-split air conditioning system executes the first operating mode and the first control signal causes hot water to be transferred from the outdoor unit to the water heater tank, the main controller controls the three-way valve to be in a connected state with the water heater tank.

5. A control method for a multi-split air conditioning system, characterized in that: The control method includes: The wired controller generates a first control signal and a second control signal respectively; the first control signal is used to control the multi-split air conditioning system to execute a first operating mode so that hot water is transferred from the outdoor unit to the floor heating pipe or the water heater tank; the second control signal is used to control the multi-split air conditioning system to execute a second operating mode so that the indoor unit performs cooling, or to control the multi-split air conditioning system to execute a third operating mode so that the indoor unit performs heating; The main controller receives the first control signal and the second control signal in sequence; and determines whether there is a conflict between the operating modes corresponding to the control signals; If there is no conflict, the main controller controls the multi-split air conditioning system to execute the operation mode corresponding to the first control signal and the second control signal; If there is a conflict, the main controller maintains the current operating mode of the multi-split air-conditioning system and issues a conflict reminder; wherein, the first operating mode includes: hot water mode, floor heating mode, hot water and floor heating circulation mode; the second operating mode includes: cooling mode, dehumidification mode, comfort dehumidification mode; the third operating mode includes: heating mode; the floor heating mode, the hot water and floor heating circulation mode, and the second operating mode are conflicting operating modes.

6. The control method according to claim 5, characterized in that: The wired controller includes a water temperature wired controller and a room temperature wired controller; The wire controller generates the first control signal and the second control signal, comprising: The water temperature wired controller generates the first control signal, and the room temperature wired controller generates the first control signal and / or the second control signal.

7. The control method according to claim 6, characterized in that: After the main controller receives the first control signal and the second control signal in succession, the control method further includes: The main controller obtains the current operating mode of the multi-split air conditioning system; When the main controller receives the first control signal first and then receives the second control signal, and there is a conflict between the operating mode corresponding to the first control signal and the operating mode corresponding to the second control signal, and the main controller obtains that the multi-split air-conditioning system is currently in the off mode or the first operating mode, the main controller controls the multi-split air-conditioning system to output a conflict reminder of the second control signal; When the main controller first receives the second control signal and then receives the first control signal, there is a conflict between the operating mode corresponding to the first control signal and the operating mode corresponding to the second control signal, and the main controller obtains that the multi-split air-conditioning system is currently in the off mode or the second operating mode, the main controller controls the multi-split air-conditioning system to output the first control signal conflict reminder.

8. The control method according to claim 6, characterized in that: One of the floor heating pipe and the water heater tank is a first target device, and the other is a second target device; When the wired controller generates the first control signal, and the first control signal is used to control the multi-split air conditioning system to execute the hot water and floor heating circulation mode in the first operation mode, After the main controller receives the first control signal, the control method includes: The main controller controls the multi-split air conditioning system so that hot water is transferred from the outdoor unit to the first target device; After the water temperature of the first target device reaches a first preset temperature, the main controller controls the multi-split air conditioning system so that hot water is transferred from the outdoor unit to the second target device; After the water temperature in the second target device reaches the second preset temperature, the main controller obtains the water temperature in the first target device and determines whether the water temperature in the first target device is less than the first preset temperature. If so, the main controller controls the multi-split air-conditioning system so that hot water is transferred from the outdoor unit to the first target device; if not, the main controller controls the outdoor unit to shut down.

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