Air conditioner water heater unit, electronic equipment, system and heat management method

Abstract

The invention provides an air conditioner water heater unit, electronic equipment, a system and a heat management method, the air conditioner water heater unit comprises an air conditioner module, the air conditioner module comprises an outdoor unit and an indoor unit system, the indoor unit system comprises at least one indoor unit, the indoor unit comprises a first heat exchanger, and the outdoor unit comprises a second heat exchanger; the water heater comprises a water tank and a third heat exchanger which are in thermal coupling connection; at least one of the first heat exchanger and the second heat exchanger is matched with the third heat exchanger to form multiple water heating modes; and the controller is configured to determine a hot water making strategy according to the required heat of the water heater, the first parameter of the unit in the preset time period, the reserved water use time and the on-off time of the indoor unit system. According to the embodiment, reasonable distribution of heat can be achieved, it is guaranteed that the reserved water temperature is reached at the reserved water use moment, meanwhile, the indoor temperature regulation and control requirement is met, energy consumption is reduced, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioner water heater, in particular to an air conditioner water heater unit, an electronic device, a system and a heat management method. BACKGROUND

[0002] With the emphasis on environmental protection and energy utilization, when air conditioning refrigeration, the air conditioner water heater unit that can utilize the outdoor condenser heat to heat water to realize energy recycling is more and more favored by consumers. The air conditioner water heater unit on the market is composed of a set of variable frequency outdoor unit, multiple indoor units and a water heater tank. Corresponding unit operation can realize indoor refrigeration function, indoor heating function and hot water function. The unit can realize any one of the above three functions or simultaneously realize two functions to meet the needs of users. For example, indoor refrigeration and hot water at the same time, by recycling indoor heat to heat the water heater; or indoor heating and hot water at the same time, the unit can meet the needs of users for heating and hot water. The current air conditioner water heater unit cannot reasonably distribute when there is a demand for indoor temperature regulation and hot water, which leads to high energy consumption and poor hot water use experience. SUMMARY

[0003] The embodiments of the present application provide an air conditioner water heater unit, an electronic device, a system and a heat management method to at least solve the technical problem that the current air conditioner water heater unit cannot reasonably distribute when there is a demand for indoor temperature regulation and hot water, which leads to high energy consumption and poor hot water use experience.

[0004] According to a first aspect of the embodiments of the present application, an air conditioner water heater unit is provided, which comprises: An air conditioner module comprising an outdoor unit and an indoor unit system, the indoor unit system comprising at least one indoor unit, the indoor unit comprising a first heat exchanger, the outdoor unit comprising a second heat exchanger; A water heater comprising a water tank and a third heat exchanger, the third heat exchanger being in thermal coupling connection with the water tank; at least one of the first heat exchanger and the second heat exchanger cooperates with the third heat exchanger to form multiple hot water modes; A controller configured to determine a hot water strategy according to a water heater demand heat, a first parameter of the unit within a preset time period, a pre-ordered water time and a turn-on / off time of the indoor unit system, the hot water strategy comprising a hot water mode and / or a hot water parameter; The water heater demand heat is heat required for heating water in the water tank from a current water temperature at a current time to a preset water temperature; the preset time period is a time period between a preset water use time and the current time; and the first parameter is heat recovery heat of the indoor unit in the cooling mode and available for heating water, or is total capacity demand of the indoor unit in the heating mode and meeting both heating and heating water.

[0005] By combining the water heater demand heat and the first parameter of the indoor unit in the preset time period, the appropriate heating water mode can be adopted according to different working states of the indoor unit, and the heating water parameter corresponding to the heating water mode can be further determined according to the preset water use time and the on-off time of the indoor unit system, so that the recovered indoor heat can be fully utilized to heat water when the indoor unit system operates in the cooling mode, energy consumption is saved, and the heating water opportunity can be controlled according to the total heat demand of the indoor unit system in the heating mode and the heating water mode, so as to ensure the heating water and indoor heating effect. The embodiment can ensure that the preset water temperature is reached at the preset water use time, meet the indoor temperature regulation demand, reduce energy consumption, and improve user experience.

[0006] In combination with the first aspect, in an optional implementation manner of the embodiment, the heating water mode includes a first heating water mode and a second heating water mode, the first heating water mode is a mode of heating water by using the first heat exchanger as an evaporator and the third heat exchanger as a condenser, and the second heating water mode is a mode of heating water by using the second heat exchanger as an evaporator and the third heat exchanger as a condenser; and the controller is further configured to: In the cooling mode, the first heating water mode and the second heating water mode are combined to heat water according to that the first parameter is less than the water heater demand heat, and the heating water parameter of the second heating water mode is determined according to the water heater demand heat, the first parameter, the preset water use time and the on-off time of the indoor unit system. The heating water parameter includes a target heating water time and a target heating water duration.

[0007] In combination with the first aspect, in an optional implementation manner of the embodiment, the heating water mode includes a second heating water mode and a third heating water mode, the second heating water mode is a mode of heating water by using the second heat exchanger as an evaporator and the third heat exchanger as a condenser, and the third heating water mode is a mode of heating water by using the second heat exchanger as an evaporator and the first heat exchanger and the third heat exchanger as condensers; and the controller is further configured to: In the heating mode, according to the first parameter being less than or equal to the capacity requirement upper limit of the unit, and the shutdown time of the indoor unit system being later than the scheduled water use time, at least the third heating water mode is used to heat water, and the heating water parameters of the third heating water mode are determined according to the water heater required heat, the scheduled water use time, and the on-off time of the indoor unit system; Alternatively, according to the first parameter being less than or equal to the capacity requirement upper limit of the unit, and the shutdown time of the indoor unit system being earlier than the scheduled water use time, the second heating water mode and the third heating water mode are used to heat water jointly, and the heating water parameters of the second heating water mode and the third heating water mode are determined according to the water heater required heat, the scheduled water use time, and the on-off time of the indoor unit system, respectively. The heating water parameters include a target heating water time and a target heating water duration.

[0008] According to a second aspect of the embodiments of the present application, a heat management method in a water heater unit heating water process is provided, the heat management method is applied to the air conditioner water heater provided in the first aspect of the embodiments of the present application, and the heat management method comprises the following steps. A water heater required heat and a first parameter of an indoor unit system in a preset time period are determined. A heating water strategy is determined according to the water heater required heat, the first parameter, the scheduled water use time, and the on-off time of the indoor unit system.

[0009] In combination with the first aspect, in an optional implementation manner of the embodiments, the determination of the heating water strategy according to the water heater required heat, the first parameter, the scheduled water use time, and the on-off time of the indoor unit system comprises the following steps. The unit is operated in the refrigeration mode in the preset time period, the first heating water mode is started, and the refrigerant flow path with the first heat exchanger as the evaporator and the third heat exchanger as the condenser is used to heat water; In the case that the first parameter is less than the water heater required heat, the heating water parameters of the second heating water mode are determined according to the water heater required heat, the first parameter, the scheduled water use time, and the on-off time of the indoor unit system. According to the heating water parameters of the second heating water mode, the second heating water mode is started, and the refrigerant flow path with the second heat exchanger as the evaporator and the third heat exchanger as the condenser is used to heat water.

[0010] In combination with the second aspect, in an optional implementation manner of the embodiments, the determination of the heating water parameters of the second heating water mode according to the water heater required heat, the first parameter, the scheduled water use time, and the on-off time of the indoor unit system comprises the following steps. determining a first demand duration of the second water heating mode according to the water heater demand and the first parameter; determining a target water heating time and a target water heating duration of the second water heating mode according to the first demand duration, the scheduled water use time and the on-off time of the indoor unit system.

[0011] With reference to the second aspect, in an optional implementation manner of the embodiment, determining the target water heating time and the target water heating duration of the second water heating mode according to the first demand duration, the scheduled water use time and the on-off time of the indoor unit system, comprises: determining a first duration between the off time of the indoor unit system and the scheduled water use time according to that the scheduled water use time is not earlier than the off time of the indoor unit system; determining the target water heating time and the target water heating duration according to the first demand duration and the first duration. Determining the target water heating time and the target water heating duration according to the first demand duration and the first duration, comprises: determining the off time of the indoor unit system as the target water heating time and the first duration as the target water heating duration according to that the first demand duration is less than or equal to the first duration, the off time of the indoor unit system being before the scheduled water use time by the first demand duration; or determining the off time of the indoor unit system as the target water heating time and the first duration as the target water heating duration according to that the first demand duration is greater than the first duration.

[0012] With reference to the second aspect, in an optional implementation manner of the embodiment, in the case that the first demand duration is greater than the first duration, according to that the first demand duration is greater than a first set duration, the second water heating mode is used to heat water and an electric heating device is used to assist in heating water, the first set duration being greater than the first duration.

[0013] With reference to the second aspect, in an optional implementation manner of the embodiment, determining the target water heating time and the target water heating duration of the second water heating mode according to the first demand duration, the scheduled water use time and the on-off time of the indoor unit system, comprises: determining a second time according to that the scheduled water use time is earlier than the off time of the indoor unit system, the second time being a time corresponding to the first demand duration before the on time of the indoor unit system; According to the second time being later than the current time, the second time is determined as the target hot water making time, and the first demand time length is determined as the target hot water making time length; or, according to the second time being not later than the current time, the current time is determined as the target hot water making time, and a second time length is determined as the target hot water making time length, the second time length being a time length between the current time and a start-up time of the indoor unit system.

[0014] With reference to the second aspect, in an optional implementation of the embodiment, in the case that the second time is not later than the current time, according to the first demand time length being greater than a second set time length, the second hot water making mode is used to make hot water, and an electric heating device is used to assist in making hot water, the second set time length being greater than the second time length.

[0015] With reference to the second aspect, in an optional implementation of the embodiment, the hot water making strategy is determined according to the water heater demand heat, the first parameter, the scheduled water use time and the start-up and shutdown time of the indoor unit system, and includes: The hot water making strategy is determined according to the water heater demand heat, the first parameter, the scheduled water use time and the start-up and shutdown time of the indoor unit system, and includes: A second demand time length of making hot water is determined according to the water heater demand heat. The preset time period is divided into a plurality of sub time periods according to the start-up and shutdown time of each indoor unit in the indoor unit system. At least one target time period is determined from the sub time periods, in which the first parameter is less than or equal to the capacity demand upper limit of the unit. According to the scheduled water use time, the second demand time length and the at least one target time period, at least a target hot water making time and a target hot water making time length of a third hot water making mode are determined.

[0016] With reference to the second aspect, in an optional implementation of the embodiment, according to the scheduled water use time, the second demand time length and the at least one target time period, at least a target hot water making time and a target hot water making time length of a third hot water making mode are determined, and includes: At least one sub target time length is selected from the at least one target time period, starting from the scheduled water use time, and the sum of the at least one sub target time length is the same as the second demand time length. In the case that the at least one sub-target time length comprises a first sub-target time length in which the indoor unit system runs in a heating mode, in the second sub-target time length, the third heating water mode is used to heat water, the first heat exchanger and the third heat exchanger are used to heat water at the same time, the second heat exchanger is used to heat water at the evaporator of the refrigerant flow path, the target heating water time of the third heating water mode comprises the start time corresponding to each first sub-target time length, and the target running time of the third heating water time comprises each first sub-target time length; and / or, In the case that the at least one sub-target time length comprises a second sub-target time length in which the indoor unit system is in standby, in the second sub-target time length, the second heating water mode is used to heat water, the third heat exchanger is used to heat water at the condenser, and the second heat exchanger is used to heat water at the evaporator of the refrigerant flow path, the target heating water time of the second heating water mode comprises the start time corresponding to each second sub-target time length, and the target running time of the second heating water time comprises each second sub-target time length.

[0017] In combination with the second aspect, in an optional implementation manner of the embodiment, in the cooling mode, the method further comprises: determining historical outdoor temperature data of the preset time period in a preset time period, and determining a historical outdoor average temperature according to the historical outdoor temperature data; determining a recovery water temperature compensation upper limit value according to the current water temperature and the historical outdoor average temperature; determining a compensation heat of the water heater according to the recovery water temperature compensation upper limit value; obtaining a total heat recovery of the indoor unit system in the preset time period; determining that the total heat recovery is the first parameter according to that the total heat recovery is less than or equal to the compensation heat of the water heater, or determining that the compensation heat of the water heater is the first parameter according to that the total heat recovery is greater than the compensation heat of the water heater; the total heat recovery is a sum of heat recoveries of each indoor unit in the preset time period, and the heat recovery of each indoor unit in the preset time period is related to a preset temperature, an inner ring temperature, a cooling capacity of each indoor unit, and a cooling running time length in the preset time period.

[0018] In combination with the second aspect, in an optional implementation manner of the embodiment, in the cooling mode, the method further comprises: determining historical outdoor temperature data of the preset time period in a preset time period, and determining a historical outdoor average temperature according to the historical outdoor temperature data; determining a recovery water temperature compensation upper limit value according to the current water temperature and the historical outdoor average temperature; determining a compensation heat of the water heater according to the recovery water temperature compensation upper limit value; acquire a total heat recovery amount of the indoor unit system in the preset time period; determine the total heat recovery amount as the first parameter according to that the total heat recovery amount is less than or equal to the compensation heat of the water heater, or determine the compensation heat of the water heater as the first parameter according to that the total heat recovery amount is greater than the compensation heat of the water heater; the total heat recovery amount is a sum of heat recovery amounts of each indoor unit in the preset time period, and the heat recovery amount of each indoor unit in the preset time period is related to a preset temperature, an inner ring temperature, a refrigeration capacity and a refrigeration running time length of each indoor unit in the preset time period.

[0019] In combination with the second aspect, in an optional implementation of the embodiment, in the heating mode, the method further includes: determining historical outdoor temperature data of the preset time period in a preset time period, and determining a historical outdoor average temperature according to the historical outdoor temperature data; determining a heating water capacity demand according to a difference between the scheduled water temperature and the current water temperature and the historical outdoor average temperature, and determining an indoor heating capacity demand according to a difference between an actual inner ring temperature corresponding to each indoor unit of the indoor unit system and a target inner ring temperature and the historical outdoor average temperature; determining the first parameter according to a sum of the heating water capacity demand and the heating capacity demand.

[0020] According to a third aspect of the embodiment of the present application, an electronic device is provided, which includes one or more processors and a non-transitory computer-readable storage medium having stored program instructions, when the one or more processors execute the program instructions, the one or more processors are configured to implement the heat management method provided by the second aspect of the embodiment of the present application.

[0021] According to a fourth aspect of the embodiment of the present application, an air conditioner water heater system is provided, which includes an air conditioner water heater unit and the electronic device provided by the third aspect of the embodiment of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. The drawings described below are only some embodiments of the present disclosure, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0023] Figure 1 is a combined schematic view of the air conditioner water heater unit of the embodiment of the present application.

[0024] Figure 2is a control flowchart of an air conditioner water heater unit according to an embodiment of the present application.

[0025] Figure 3 is a control flowchart of an air conditioner water heater unit according to an embodiment of the present application.

[0026] Figure 4 is a control flowchart of an air conditioner water heater unit according to an embodiment of the present application.

[0027] Figure 5 is a control flowchart of an air conditioner water heater unit according to an embodiment of the present application.

[0028] Figure 6 is a control flowchart of an air conditioner water heater unit according to an embodiment of the present application.

[0029] Figure 7 is a control flowchart of an air conditioner water heater unit according to an embodiment of the present application.

[0030] Figure 8 is a control flowchart of an air conditioner water heater unit according to an embodiment of the present application.

[0031] Figure 9 is a control flowchart of an air conditioner water heater unit according to an embodiment of the present application.

[0032] Figure 10 is a heat recovery power change curve diagram of each time period when an indoor unit system runs in a cooling mode according to a specific example.

[0033] Figure 11 is a heating capacity demand change curve diagram of each time period when an indoor unit system runs in a heating mode according to a specific example.

[0034] Figure 12 is a control flowchart of an air conditioner water heater unit according to an embodiment of the present application.

[0035] Figure 13 is a control flowchart of an air conditioner water heater unit according to an embodiment of the present application.

[0036] Figure 14 is a control flowchart of an air conditioner water heater unit according to an embodiment of the present application.

[0037] Figure 15 is a structure block diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0038] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should fall within the scope of protection of the present application.

[0039] It should be understood that "multiple" mentioned herein refers to two or more. In the description of the embodiments of the present application, unless otherwise specified, " / " represents the meaning of or, for example, A / B can represent A or B; "and / or" herein only represents a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, "first", "second", etc. are used to distinguish the same items or similar items with basically the same function and role. Those skilled in the art can understand that "first", "second", etc. do not limit the quantity and execution order, and "first", "second", etc. also do not limit the difference.

[0040] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device containing a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0041] The current air conditioner water heater unit can heat water while cooling indoors by recovering indoor heat to heat the water heater; or heat water while heating indoors, and the unit meets the user's heating and hot water needs at the same time.

[0042] However, when the air conditioner is in standby state, if the unit starts the hot water mode too early, after a period of time of starting the hot water mode operation, when the air conditioner has a cooling demand, the unit switches to cooling + hot water simultaneous operation, if the heat recovery heat is higher than the hot water capacity demand, it may cause the water temperature to reach the user's scheduled water temperature in advance, wasting the subsequent available heat recovery heat; if the cooling heat demand is small, the cooling heat recovery heat is lower than the hot water capacity demand, it may cause the water temperature to be heated to the scheduled water temperature before the user's scheduled water use time, the unit has to start the water tank electric heating, increasing the power consumption; When the air conditioner has a heating demand, the unit switches to heating + hot water heating function to meet the user's heating and hot water heating demand. If the total capacity demand of the hot water heating demand and the heating demand at this time is large, exceeding the upper limit of the unit capacity demand, it may cause the air conditioner heating effect to be poor, affecting the user's comfort experience, and may also cause the hot water heating power to be reduced, and the unit has to start the electric heating auxiliary heating to increase the power consumption.

[0043] The current air conditioner water heater unit cannot realize reasonable distribution of heat, thereby causing the technical problems of increased energy consumption and affecting the user's hot water use experience.

[0044] To solve the above technical problems, the present application provides an air conditioner water heater unit, an electronic device, a system and a heat management method.

[0045] The embodiment provides an air conditioner water heater unit, referring to Figure 1 the structure diagram of the air conditioner water heater unit, the air conditioner water heater unit comprises an air conditioner module, a water heater and a controller, wherein: The air conditioner module comprises an outdoor unit and an indoor unit system, and the indoor unit system comprises at least one indoor unit. Preferably, the indoor unit system comprises a plurality of indoor units, and the plurality of indoor units are connected in parallel. When the indoor unit system starts, one indoor unit in the plurality of indoor units can be in a working state, part of the indoor units in the plurality of indoor units can be in a working state, or all the indoor units in the plurality of indoor units can be in a working state.

[0046] The indoor unit comprises a first heat exchanger, and the outdoor unit comprises a second heat exchanger. The water heater comprises a water tank and a third heat exchanger, and the third heat exchanger is coupled to the water tank. For example, the coil of the third heat exchanger is arranged outside the water tank.

[0047] The air conditioner water heater unit further comprises a compressor and an energy-saving device, and the compressor and the energy-saving device cooperate with at least two of the first heat exchanger, the second heat exchanger and the third heat exchanger to form a refrigerant circulation loop. When there is a hot water heating demand, at least one of the first heat exchanger and the second heat exchanger cooperates with the third heat exchanger to form a plurality of hot water heating modes.

[0048] The air conditioner water heater unit comprises a first hot water heating mode, a second hot water heating mode and a third hot water heating mode.

[0049] The first hot water heating mode is a hot water heating mode using the first heat exchanger as an evaporator and the third heat exchanger as a condenser. At this time, the compressor, the energy-saving device, the first heat exchanger and the third heat exchanger cooperate to form a refrigerant circulation loop. The part of the indoor heat absorbed by the first heat exchanger is transmitted to the third heat exchanger through the refrigerant, and then the water in the water tank is heated to realize indoor refrigeration and hot water heating at the same time.

[0050] The second water heating mode is a mode of heating water by a refrigerant flow path in which the third heat exchanger is used as a condenser and the second heat exchanger is used as an evaporator. At this time, a refrigerant circulation loop is formed between the compressor, the third heat exchanger, the throttling device and the second heat exchanger, and the second heat exchanger absorbs outdoor heat and then transfers the heat to the first heat exchanger to achieve water heating alone.

[0051] The third water heating mode is a mode of heating water by a refrigerant flow path in which the first heat exchanger and the third heat exchanger are used as condensers and the second heat exchanger is used as an evaporator. At this time, a refrigerant circulation loop is formed between the compressor, the first heat exchanger, the energy-saving device and the second heat exchanger, and another refrigerant circulation loop is formed between the compressor, the third heat exchanger, the energy-saving device and the second heat exchanger. The second heat exchanger absorbs outdoor heat and then transfers the heat to the first heat exchanger and the third heat exchanger, respectively, to achieve water heating while indoor heating.

[0052] In the absence of water heating demand, a refrigerant circulation loop is formed between the compressor, the first heat exchanger, the energy-saving device and the second heat exchanger to achieve indoor cooling or heating alone.

[0053] In actual application, the electromagnetic valve provided in the refrigerant circulation loop can be used to control the refrigerant flow direction, thereby realizing switching of multiple water heating modes.

[0054] The controller is configured to determine a water heating strategy according to a water heater demand heat, a first parameter of the unit within a preset time period, a scheduled water use time and a switching-on / off time of the indoor unit system, the water heating strategy including a water heating mode and / or a water heating parameter. The water heater demand heat is the heat required for heating the water in the water tank from the current water temperature at the current time to the scheduled water temperature. The preset time period is the time period between the scheduled water use time and the current time. The first parameter is the heat recovery heat of the unit in the cooling mode, which can be used for water heating, or is the total capacity demand of the unit in the heating mode, which meets the heating and water heating simultaneously.

[0055] The water heater demand heat, the first parameter of the unit within the preset time period, the scheduled water use time and the switching-on / off time of the indoor unit system can be used to determine the water heating parameter corresponding to the water heating mode, thereby fully utilizing the recovered indoor heat to perform water heating when the indoor unit system operates in the cooling mode, saving energy consumption, and controlling the water heating time according to the total heat demand of the unit for water heating and heating when the indoor unit system operates in the heating mode, ensuring the water heating and indoor heating effects. The embodiment can ensure that the scheduled water temperature is reached at the scheduled water use time, meet the indoor temperature regulation demand, reduce energy consumption and improve user experience.

[0056] In an optional implementation, the controller is further configured to: in the cooling mode, jointly heat water in the water tank by using the first water heating mode and the second water heating mode according to the first parameter being less than the water heater required heat, and determine the water heating parameter of the second water heating mode according to the water heater required heat, the first parameter, the scheduled water use time, and the on-off time of the indoor unit system; and the water heating parameter comprises a target water heating time and a target water heating duration.

[0057] In the embodiment, when the indoor unit system operates in the cooling mode, the recovered indoor heat can be used to heat the water tank by using the first water heating mode. The first parameter is the recovered indoor heat that can be used for water heating when the unit operates in the cooling mode. The first parameter is compared with the water heater required heat, and in the case that the first parameter is less than the water heater required heat, it indicates that the recovered indoor heat in the preset time period is insufficient to heat the water in the water tank to the scheduled temperature, and at this time, the second water heating mode needs to be used for heat compensation, so that the water temperature at the scheduled water use time can reach the scheduled temperature, and further, the target water heating time and the target water heating duration of the second water heating mode are determined according to the water heater required heat, the first parameter, the scheduled water use time, and the on-off time of the indoor unit system, so as to reduce the water heating energy consumption while meeting the water heating and cooling requirements.

[0058] In the case that the first parameter is greater than or equal to the water heater required heat, it indicates that the recovered indoor heat in the preset time period is sufficient to heat the water in the water tank to the scheduled temperature, and at this time, only the first water heating mode can be used, wherein the target water heating time of the first water heating mode is the on time of the indoor unit system, and the target water heating duration is the operation duration of the indoor unit system in the preset time period.

[0059] In an optional implementation, the controller is further configured to: in the heating mode, at least use the third water heating mode to heat water according to the first parameter being less than or equal to the capacity requirement upper limit of the unit and the off time of the indoor unit system being later than the scheduled water use time, and determine the water heating parameter of the third water heating mode according to the water heater required heat, the scheduled water use time, and the on-off time of the indoor unit system; or, use the second water heating mode and the third water heating mode to jointly heat water according to the first parameter being less than or equal to the capacity requirement upper limit of the unit and the off time of the indoor unit system being earlier than the scheduled water use time, and determine the water heating parameter of the second water heating mode and the third water heating mode according to the water heater required heat, the scheduled water use time, and the on-off time of the indoor unit system, respectively; the water heating parameter comprises a target water heating time and a target water heating duration.

[0060] In this embodiment, when the indoor unit system operates in the heating mode, there is no indoor heat available for heating the water tank. In this case, the second heating water mode or the third heating water mode is used to heat the water tank. The first parameter is the total capacity requirement that meets the heating requirement and the heating water requirement at the same time.

[0061] The first parameter is compared with the capacity requirement upper limit when the indoor unit system operates. In the case that the first parameter is less than or equal to the capacity requirement upper limit, it means that the unit can meet the heating and heating water requirements at the same time. In this case, the heating and heating water can be performed at the same time. In the case that the first parameter is greater than the capacity requirement upper limit, it means that the unit is difficult to meet the heating and heating water requirements at the same time. If both are performed at the same time, the effects of heating and heating water will be affected. The heating requirement should be met in priority, and the heating water should be turned off to avoid affecting the user's heating comfort.

[0062] In addition, in order to avoid the problem that the water temperature of the water heater reaches the scheduled water temperature in advance at the scheduled water use time, causing heat waste, or the problem that the water temperature of the water heater does not reach the scheduled water temperature at the scheduled water use time, affecting the user's hot water use experience, it is also necessary to compare the shutdown time of the air conditioner system with the scheduled water use time, and determine the heating water mode and the heating water parameter of the air conditioner water heater unit according to the comparison result.

[0063] When the shutdown time of the indoor unit system is later than the scheduled water use time, it means that the scheduled water use time is reached before the air conditioner system is turned off. In this case, at least the third heating water mode is used to heat water, and the heating water parameter of the third heating water mode is determined according to the water heater demand heat, the scheduled water use time, and the on-off time of the indoor unit system, so as to avoid the problem that the water temperature of the water heater reaches the scheduled water temperature in advance at the scheduled water use time, causing heat waste.

[0064] When the shutdown time of the indoor unit system is earlier than the scheduled water use time, the second heating water mode and the third heating water mode are used to heat water, and the heating water parameters of the second heating water mode and the third heating water mode are determined according to the water heater demand heat, the scheduled water use time, and the on-off time of the indoor unit system, respectively, so as to avoid the problem that the water temperature of the water heater does not reach the scheduled water temperature at the scheduled water use time, affecting the user's hot water use experience.

[0065] The air conditioner water heater unit of the embodiment also directly uses the second heating water mode to heat the water heater alone when the indoor unit system is in the standby state within the preset time period. In this case, the target heating water time is calculated according to the water heater demand heat and the heating water power, and the target heating water time is the time corresponding to the target heating time before the scheduled water use time.

[0066] The embodiment also provides a heat management method in a heating water process of a water heater unit. The heat management method is applied to the air conditioner water heater provided in the foregoing.Figure 2 The flowchart illustrates the heat management method, which includes the following steps: S21. Determine the heat demand of the water heater and the first parameter of the indoor unit system during a preset time period; S22. Determine the hot water production strategy based on the water heater's heat demand, the first parameter, the scheduled water usage time, and the on / off time of the indoor unit system.

[0067] Specifically, after receiving a user's scheduled water usage signal, the unit determines the current time, current water temperature, scheduled water usage time, and scheduled temperature based on the signal. Simultaneously, it determines the preset on / off status of the indoor unit system after the current time, the water heater's heat demand, and the unit's first parameter within a preset time period. The preset time period is the time between the scheduled water usage time and the current time. The air conditioning system's on / off times can be set by the user or estimated based on historical usage data.

[0068] The heat demand of a water heater is the amount of heat required to heat the water in the tank from its current temperature to a preset temperature. This heat demand can be calculated using the formula Q=mcΔt, where c is the specific heat capacity of water, m is the mass of the water to be heated, and Δt is the difference between the preset and current temperatures. The mass of the water to be heated can be a fixed value, such as the mass of water when the tank is full, or it can be measured by a quality control device installed in the tank to detect the real-time mass of the water.

[0069] The first parameter is the heat recovery capacity that the unit can use to produce hot water from the indoor unit when it is in cooling mode. In one example, the heat recovery capacity is related to the heat recovery power of each indoor unit, which is related to the target inner ring temperature, the actual inner ring temperature, the cooling capacity, and the cooling operation duration within a preset time period.

[0070] Alternatively, the first parameter is the total capacity requirement for both heating and hot water production when the unit is in heating mode. In one example, the hot water capacity requirement is related to the temperature difference between the scheduled water temperature and the current water temperature, as well as the historical average outdoor temperature over a preset time period. The heating capacity requirement is related to the temperature difference between the target inner loop temperature and the actual inner loop temperature, as well as the historical average outdoor temperature over a preset time period. The hot water capacity requirement characterizes the air conditioner's hot water production capacity per unit time, and the heating capacity requirement characterizes the air conditioner's heating capacity per unit time.

[0071] After determining the water heater's required heat capacity and primary parameters, a hot water production strategy is determined based on these parameters, the scheduled water usage time, and the on / off times of the indoor unit system. The hot water production strategy includes the hot water production mode and / or hot water production parameters, which include the target hot water production time and the target hot water production duration.

[0072] The embodiment can regulate the water heating strategy of the unit according to the working state of the indoor unit system in the preset time period and the reservation heating related parameters of the water heater when there is a demand for heating water and a demand for indoor temperature regulation at the same time, so that the water temperature can reach the reserved water temperature at the reserved water use time, the indoor unit system can still not affect the indoor temperature regulation effect, the energy consumption of heating can be effectively reduced, and the user experience is improved.

[0073] In an optional implementation, referring to the flowchart of Figure 3 , the water heating strategy is determined according to the water heater demand heat, the first parameter, the reservation water use time, and the on-off time of the indoor unit system, including: S31, according to the operation of the unit in the preset time period in the refrigeration mode, the first water heating mode is started, and the first heat exchanger is used as the evaporator and the third heat exchanger is used as the condenser to heat water; S32, in the case that the first parameter is less than the water heater demand heat, the water heating parameters of the second water heating mode are determined according to the water heater demand heat, the first parameter, the reservation water use time, and the on-off time of the indoor unit system; S33, according to the water heating parameters of the second water heating mode, the second water heating mode is started, and the second heat exchanger is used as the evaporator and the third heat exchanger is used as the condenser to heat water.

[0074] Specifically, when the indoor unit system operates in the refrigeration mode in the preset time period, the indoor heat recovered by the indoor unit can be directly used to heat water, at this time, the first water heating mode is started, and the first heat exchanger is used as the evaporator and the third heat exchanger is used as the condenser to heat water.

[0075] Whether the indoor unit system needs to operate in the water heating mode in the standby time period needs to be determined according to the water heater demand heat and the first parameter in the refrigeration mode, and the first parameter is the heat recovery heat that can be used for water heating.

[0076] First, the first parameter and the water heater demand heat need to be compared, when the first parameter is greater than or equal to the water heater demand heat, the heat recovery heat that can be used for water heating can completely realize the heating of the water temperature from the current water temperature to the reserved water temperature, and the water heating mode does not need to be started, and only the heat recovery heat is used to heat water while the indoor refrigeration is performed.

[0077] When the first parameter is less than the water heater demand heat, it indicates that the recovered heat recovery heat available for heating water is insufficient to heat the water temperature from the current water temperature to the preset water temperature, and the second heating water mode is needed to heat water when the indoor unit system is on standby, at which time the second heating water parameter of the second heating water mode needs to be determined according to the water heater demand heat, the first parameter, the preset water use time and the on-off time of the indoor unit system, and the second heating water mode is started according to the second heating water parameter of the second heating water mode, in which the second heating water is heated by using the second heat exchanger as an evaporator and the third heat exchanger as a condenser.

[0078] In an optional implementation, referring to the flowchart of Figure 4 , the second heating water parameter of the second heating water mode is determined according to the water heater demand heat, the first parameter, the preset water use time and the on-off time of the indoor unit system, which includes: S41, determining the first demand duration of the second heating water mode according to the water heater demand heat and the first parameter; S42, determining the target heating water time and the target heating water duration of the second heating water mode according to the first demand duration, the preset water use time and the on-off time of the indoor unit system.

[0079] Specifically, after receiving the preset heating water instruction, the first demand duration of the second heating water mode needs to be determined according to the water heater demand heat and the first parameter, which is determined according to the formula , wherein Δt1 is the first demand duration, Q 水 is the water heater demand heat, Q 热 is the heat recovery heat available for heating water, and P 水 is the heating water power of the unit. The heat recovery heat is the sum of the heat recovery heat of each indoor unit in the preset time period when the indoor unit system is in the working state, which is related to the target inner ring temperature, the inner ring temperature, the refrigeration capacity and the refrigeration running duration of each indoor unit in the preset time period.

[0080] After determining the first demand duration, the heating water parameter of the second heating water mode also needs to be determined in combination with the preset water use time and the shutdown time of the indoor unit system to determine the heating water parameter of the second heating water mode.

[0081] In an optional implementation, referring to the flowchart of Figure 5 , the target heating water time and the target heating water duration of the second heating water mode are determined according to the first demand duration, the preset water use time and the on-off time of the indoor unit system, which includes: S51, determining the first duration between the shutdown time of the indoor unit system and the preset water use time according to the fact that the preset water use time is not earlier than the shutdown time of the indoor unit system; S52, determine the target heating water time and the target heating water duration according to the first demand duration and the first duration.

[0082] Specifically, after determining the first demand duration, it is further determined whether the shutdown time of the indoor unit system is earlier than the scheduled water use time, and then it is determined whether to start the heating water mode after the indoor unit system is shut down or to start the heating water mode before the indoor unit system is started, In the case where the scheduled water use time is not earlier than the shutdown time of the indoor unit system, it is indicated that the indoor unit system is in standby state between the shutdown of the indoor unit system and the scheduled water use time, at this time, there is no available heat recovery heat, and it is necessary to calculate the first duration of the scheduled water use time and the shutdown time of the indoor unit system, and determine the target heating water time and the target heating water duration of the second heating water mode according to the first duration and the first demand duration, so as to ensure the heating water effect and reduce the heating water energy consumption of the second heating water mode.

[0083] In an example, the target heating water time and the target heating water duration are determined according to the first demand duration and the first duration, including: According to the first demand duration being less than or equal to the first duration, the first time is determined as the target heating water time, and the first demand duration is determined as the target heating water duration, and the first time is the time corresponding to the first demand duration before the scheduled water use time; specifically, in the case where the first demand duration is less than or equal to the first duration, it is indicated that starting the second heating water mode within the first duration is enough to heat the water to the scheduled temperature, at this time, it is only necessary to start the second heating water mode at the first time and continuously run for the first demand duration.

[0084] Alternatively, according to the first demand duration being greater than the first duration, the shutdown time of the indoor unit system is determined as the target heating water time, and the first duration is determined as the target heating water duration. Specifically, in the case where the first demand duration is greater than the first duration, the second heating water mode needs to be started within the entire first duration to meet the scheduled temperature requirement. At this time, starting from the shutdown time of the last indoor unit of the indoor unit system, the heating water mode is started and continuously runs to the scheduled water use time. Specifically, when the second heating water mode is running, the running frequency of the compressor is controlled to ensure that the water temperature reaches the scheduled water temperature after the heating water mode runs for the first duration.

[0085] In a preferred embodiment, when the first demand duration is greater than the first duration, the first demand duration is greater than the first set duration, and the second heating water mode is started, and the electric heating device in the water tank of the water heater is used to assist heating. Specifically, when the first demand duration is greater than the first set duration, it means that the first demand duration is greatly different from the first duration, and the water temperature cannot reach the preset temperature at the preset water use time when the second heating water mode is started even if the compressor runs at a high frequency. At this time, the electric heating device needs to be used to assist heating the water in the water tank to ensure that the water temperature reaches the preset temperature at the preset water use time. The first set duration is, for example, 1.2-1.5 times the first duration.

[0086] In an optional implementation, referring to the flowchart of Figure 6 , the target heating water time and the target heating water duration of the second heating water mode are determined according to the first demand duration, the preset water use time, and the on-off time of the indoor unit system, including: S61, according to the preset water use time being earlier than the off time of the indoor unit system, determining a second time, the second time being a time corresponding to the first demand duration before the on time of the indoor unit system; S62, according to the second time being later than the current time, determining that the second time is the target heating water time, and determining that the first demand duration is the target heating water duration; or, according to the second time not being later than the current time, determining that the current time is the target heating water time, and determining that the target heating water duration is the duration between the current time and the on time of the indoor unit system.

[0087] Specifically, when the preset water use time is earlier than the off time of the indoor unit system, it means that after the preset water use time is reached, the indoor unit system is still in the cooling mode. The second heating water mode cannot be executed synchronously with the cooling mode, and therefore, the second heating water mode needs to be started according to the time period between the on time of the first indoor unit of the indoor unit system in the preset time period and the current time.

[0088] Specifically, when the heating water mode is started, the time corresponding to the first demand duration before the on time of the indoor unit system in the preset time period, i.e., the second time, needs to be determined, and then the second time, the current time, the first demand duration, and the on time of the indoor unit system are combined to determine the target heating water time and the target heating water duration of the second heating water mode, so as to ensure the heating water effect and reduce the heating water energy consumption.

[0089] In an example, according to the second time being later than the current time, the second time is determined as the target hot water making time, and the first demand duration is determined as the target hot water making duration. Specifically, in the case that the second time is later than the current time, the second hot water making mode is started at the second time and continuously runs for the first demand duration, without the need to start the second hot water making mode at the current time and continuously run until the start time of the indoor unit system, effectively reducing the energy consumption of hot water making.

[0090] Alternatively, according to the second time being not later than the current time, the current time is determined as the target hot water making time, and the second duration is determined as the target hot water making duration, which is the duration between the current time and the start time of the indoor unit system. Specifically, in the case that the second time is not later than the current time, the second hot water making mode can only be started from the current time and continuously run for the second duration. Specifically, the running frequency of the compressor in the second hot water making mode can be regulated to ensure the hot water making effect.

[0091] Preferably, in the case that the second time is not later than the current time, according to the first demand duration being greater than the second set duration, an electric heating device is used to assist heating while the hot water making mode is started, and the second set duration is greater than the second duration. In the case that the second time is not later than the current time, it indicates that the first demand duration is greatly different from the second duration. In the running of the second hot water making mode, even if the compressor runs at a high frequency, the water temperature cannot reach the preset temperature at the preset water use time. At this time, the electric heating device arranged in the water tank of the water heater is used to assist heating the water in the water tank, so as to ensure that the water temperature at the preset water use time reaches the preset water temperature. The second set duration is, for example, 1.2-1.5 times of the second duration.

[0092] In an optional implementation, referring to the flowchart of FIG. 1, Figure 7 the hot water making strategy is determined according to the water heater demand heat, the first parameter, the preset water use time, and the start and stop times of the indoor unit system, including: S71, determining the second demand duration of hot water making according to the water heater demand heat; S72, dividing a preset time period into multiple sub-time periods according to the start and stop times of each indoor unit in the indoor unit system; S73, determining at least one target time period from the sub-time periods, in which the first parameter is less than or equal to the capacity demand upper limit of the unit; S74, determining at least the target hot water making time and the target hot water making duration of the third hot water making mode according to the preset water use time, the second demand duration, and the at least one target time period.

[0093] Specifically, when the indoor unit system runs in the heating mode for a preset time period, the unit cannot use indoor heat to heat the water heater, and therefore, when the indoor unit system runs in the heating mode, it is also necessary to determine whether the unit can simultaneously heat water under the premise of ensuring the indoor heating effect. Specifically, the sum of the heating capacity demand and the hot water capacity demand (i.e., the first parameter) can be compared with the capacity demand upper limit of the unit, and in the case where the first parameter is less than or equal to the capacity demand upper limit of the unit, the third hot water heating mode can be used to heat water, i.e., to simultaneously heat water while heating. This is because, in the case where the sum of the heating capacity demand and the hot water capacity demand is greater than the capacity demand upper limit, the unit cannot meet the capacity demand of simultaneously running the heating mode and the hot water heating mode, and the heating and hot water heating effects will be affected, and therefore, the heating mode demand needs to be met first, and heating needs to be stopped to avoid affecting the user's heating comfort.

[0094] In addition, in the preset time period, if there is a standby time period in which the indoor unit system is in a standby state, the standby time period can also be used to heat water. Since the indoor unit system does not heat at this time, the air conditioning unit alone heats water, and the hot water capacity demand does not exceed the capacity demand upper limit of the unit, and therefore, the second hot water heating mode can be used to heat water.

[0095] When to start running the third hot water heating mode or the second hot water heating mode, the second demand duration required for hot water heating needs to be determined first, and the second demand duration can be calculated according to the formula: where Δt2 is the first demand duration, Q 水 is the water heater demand heat, and P 水 is the hot water heating power of the unit.

[0096] Then, the preset time period is divided into multiple sub-time periods according to the start-up time and the shutdown time of each indoor unit in the indoor unit system running in the preset time period, and at least one target time period in which the first parameter is less than or equal to the capacity demand upper limit of the unit is determined in the multiple sub-time periods. The target time period is the time period in which hot water can be heated. When to start hot water heating and when to end hot water heating need to be determined according to the scheduled water use time, the second demand duration, and the at least one target time period.

[0097] In an optional embodiment, after the second demand duration of the hot water heating mode and the target time period in which hot water can be heated are determined, in order to achieve a water temperature that exactly reaches the scheduled water temperature at the scheduled water use time, it is necessary to ensure that hot water heating is just ended when the scheduled water use time is reached, and it is also necessary to ensure that the running duration of hot water heating reaches the second demand duration. Therefore, at least one sub-target duration needs to be selected from the at least one target time period starting from the scheduled water use time, and the sum of the at least one sub-target duration is the same as the second demand duration.

[0098] If at least one sub-target duration includes the first sub-target duration of the indoor unit system operating in heating mode, then a third hot water production mode is used to produce hot water during the second sub-target duration. This hot water production utilizes a refrigerant flow path where both the first and third heat exchangers act as condensers, and the second heat exchanger acts as an evaporator. The target hot water production time of the third hot water production mode includes the start time corresponding to each of the first sub-target durations, and the target running time of the third hot water production time includes each of the first sub-target durations; and / or If at least one sub-target duration includes the second sub-target duration of the indoor unit system standby, hot water is produced in the second sub-target duration using the second hot water production mode. Hot water is produced using a refrigerant flow path with the third heat exchanger as the condenser and the second heat exchanger as the evaporator. The target hot water production time of the second hot water production mode includes the start time corresponding to each second sub-target duration, and the target running time of the second hot water production time includes each second sub-target duration.

[0099] For example, from the current time t now Start, at the scheduled water usage time t 水use Previously, with the turning on and off of each indoor unit, the total required capacity of the unit was ∑Φ i It will also change, depending on the preset start-up time (tON) of each indoor air conditioner unit. i 1. Preset off time tOFF i and ∑Φ i The changes are divided into time periods. For example... Figure 2 As shown, the total heating demand capacity ∑Φ varies with the start and stop of each indoor unit at different times. i It is also changing.

[0100] Reference Figure 11 , record t now to t 水use All ∑Φ i ≤(Φ max -Φ 水 The start time t of the time period. less_start_k End time t less_end_k and the duration of the time period is Δt less_k =t less_end_k -t less_start_k From t 水use Time to t now The time increments by Δt from the end to the beginning. less_k For ∑Δt less_k Record ∑Δt less_k ≥Δt 水 The recording time is t over This marks the moment when the hot water system is first turned on. From t over From time t, at ∑Φ i ≤(Φ max -Φ 水The hot water system will turn on during the specified time period (t), otherwise it will turn off. The hot water system will also turn off at the start time (t) of the indoor unit's heating mode operation. less_start_k Until the end time t less_end_k The third hot water production mode is used to produce hot water, and the indoor unit system is in standby mode for t less_start_k Until the end time t less_end_k Hot water is produced using the second hot water production mode.

[0101] In one alternative implementation, refer to Figure 8 The flowchart, in cooling mode, further includes: S81. Determine the historical outdoor temperature data within the preset time period, and determine the historical average outdoor temperature based on the historical outdoor temperature data. S82. Determine the upper limit of the recovery water temperature compensation based on the current water temperature and the historical average outdoor temperature; S83. Determine the compensating heat of the water heater based on the upper limit of the recovered water temperature compensation; S84. Obtain the total heat recovery of the indoor unit system within a preset time period; S85. The total heat recovery is determined as the first parameter based on the fact that the total heat recovery is less than or equal to the compensation heat of the water heater; or, the compensation heat of the water heater is determined as the first parameter based on the fact that the total heat recovery is greater than the compensation heat of the water heater. Specifically, when the indoor unit system is operating in cooling mode, it is also necessary to determine the historical average outdoor temperature over a preset time period. The historical average outdoor temperature can be determined by using historical outdoor temperature data within a preset time period, such as the past week. The outdoor temperature can be detected by the unit's built-in temperature sensor.

[0102] When the indoor unit system is operating in cooling mode, the water temperature in the tank gradually increases as heat recovery progresses, leading to a gradual increase in the cooling load. To ensure cooling performance, the unit must operate at higher power. When the temperature difference between the water and the outdoor environment exceeds a certain value, if the refrigerant flow path—using the indoor unit's heat exchanger as the evaporator and the water heater's heat exchanger as the condenser—continues to simultaneously cool and produce hot water, the energy consumption will exceed that of cooling or hot water production alone. Therefore, it is necessary to determine the upper limit of heat recovery water temperature compensation and, based on this limit, determine the compensation heat. Hot water production can only be achieved when the heat recovery heat is less than or equal to the compensation heat. Once the heat recovery heat reaches the compensation heat, simultaneous cooling and hot water production must be stopped, and the indoor unit should first perform indoor cooling. After the cooling demand decreases, the cooling mode should be turned off, and the hot water production mode should be activated.

[0103] Wherein: the single refrigeration is the refrigerant flow path refrigeration with the heat exchanger of the indoor unit as the evaporator and the heat exchanger of the outdoor unit as the condenser, the single hot water heating is the refrigerant flow path hot water heating with the heat exchanger of the outdoor unit as the evaporator and the heat exchanger of the indoor unit as the condenser, i.e. the second hot water heating mode.

[0104] The heat recovery water temperature upper limit compensation value is related to the current water temperature and the historical outdoor average temperature, and is obtained through experiments in the product development process and stored in the memory chip of the outdoor unit.

[0105] After the heat recovery water temperature upper limit compensation value is determined, the compensation heat of the water heater can be determined according to the formula Q 补 = mcΔT 补 , wherein Q 补 is the compensation heat of the water heater, m is the mass of the water to be heated, c is the specific heat capacity of the water, and ΔT 补 is the heat recovery water temperature upper limit compensation value.

[0106] Then the total heat recovery heat of the refrigeration mode and the simultaneous refrigeration and hot water heating needs to be determined, and the total heat recovery heat is the sum of the heat recovery heat of each indoor unit in the preset time period when the indoor unit system is in the working state. The heat recovery heat of each indoor unit in the preset time period is related to the target inner ring temperature, the inner ring temperature, the refrigeration capacity of each indoor unit, and the refrigeration running time in the preset time period.

[0107] For example, from the start of refrigeration of the first indoor unit, the unit starts to simultaneously refrigerate and heat water, and the heat recovery power P 热Δti of the unit changes with the start and stop of each indoor unit. 热Δti The heat recovery power P i of each indoor unit in each time period Δt 热Δti is the sum of the heat recovery power of all the started indoor units, P i =∑P i , and the time period Δt i is divided according to the preset start time tON i and the preset stop time tOFF 热Δti of each air conditioner indoor unit and P i . P A is the heat recovery power when each indoor unit is started to simultaneously refrigerate and heat water, and the heat recovery power is related to the target inner ring temperature, the inner ring temperature, the refrigeration capacity of each indoor unit, and the refrigeration running time in the preset time period. In the product development process, the heat recovery power is obtained through experiments and stored in the memory chip of the indoor unit.

[0108] As shown in FIG. 2, it is assumed that the first indoor unit A is started to refrigerate at t2, the heat recovery frequency P W of the A unit is 100 B , the second indoor unit B is started to refrigerate at t3, and the heat recovery frequency P W of the B unit is 30W , t4 time third machine C open refrigeration, t2 to t3 time period P 热Δti = P A , t3 to t4 time period P 热Δti = P A + P B . Assuming t2 first time the first indoor unit A open refrigeration, t2 to t3 time period of heat recovery heat P 热Δti × Δt i , Δt i = t3-t2.

[0109] Cumulative from the first time the first indoor unit open tON first to the scheduled water time t 水use can be used for hot water heat recovery total heat Q 热 =∑(P 热Δti × Δt i ). Then compare the total heat recovery heat and heat water compensation heat size, and in the case of total heat recovery heat is less than or equal to the heat water compensation heat, the total heat recovery heat is determined as the first parameter. In the case of total heat recovery heat is greater than the heat water compensation heat, the heat water compensation heat is determined as the first parameter.

[0110] In an alternative implementation, with reference to the flow chart of Figure 9 , in the heating mode, the method further comprises: S91, determine the historical outdoor temperature data in a preset time period within a preset time period, and determine the historical outdoor average temperature according to the historical outdoor temperature data; S92, determine the heating water capacity demand according to the difference between the scheduled water temperature and the current water temperature and the historical outdoor average temperature; determine the indoor heating capacity demand according to the difference between the actual inner ring temperature corresponding to each indoor unit of the indoor unit system and the target inner ring temperature and the historical outdoor average temperature; S93, determine the first parameter according to the sum of the heating water capacity demand and the heating capacity demand.

[0111] Specifically, when the indoor unit system runs in heating mode, the historical outdoor average temperature of the preset time period also needs to be determined, which can be determined by the historical outdoor temperature data in the preset time period. The preset time period is, for example, the time period within the last week.

[0112] In order to avoid the total capacity demand in the case of heating and heating water at the same time exceeding the capacity demand limit and affecting the heating water effect and the heating effect, it is necessary to determine the heating water capacity demand and the heating capacity demand, and to allow heating and heating water at the same time only when the sum of the heating water capacity demand and the heating capacity demand is less than or equal to the capacity demand limit.

[0113] wherein the heating water capacity requirement is related to the difference between the scheduled water temperature and the current water temperature and the historical average outdoor temperature. In an example, the heating water capacity satisfies the following formula: , is a compensation coefficient obtained from the memory chip according to the difference between the actual water temperature and the scheduled target water temperature, and ranges from (0, 1], , are the current water temperature and the historical average outdoor temperature, respectively, and the values of the coefficients a, b, c, d, e, and f are related to the system structure of the water tank and the outdoor unit and many other factors, which are obtained through experiments in the product development process.

[0114] The heating capacity requirement is related to the difference between the actual indoor loop temperature and the target indoor loop temperature of each indoor unit of the indoor unit system and the historical average outdoor temperature. In an example, the heating capacity of a certain indoor unit satisfies the following formula: , , is a compensation coefficient obtained from the memory chip according to the difference between the actual indoor loop temperature and the target indoor loop temperature, and ranges from (0, 1], , are the indoor loop temperature and the historical average outdoor temperature, respectively, and the values of the coefficients a, b, c, d, e, and f are related to the system structure of the indoor unit and the outdoor unit and many other factors, which are obtained through experiments in the product development process.

[0115] After determining the heating water capacity requirement and the heating capacity requirement, the sum of the heating water capacity requirement and the heating capacity requirement is determined as the first parameter.

[0116] In a specific example, in combination with the flowchart of Figure 12 , the user presets the cooling mode in a preset time period, when cooling and heating water run at the same time, the heat recovery water temperature upper limit compensation value ΔT 补 is obtained from the outdoor unit memory chip according to the water temperature and the average outdoor temperature, the heat Q 补 required for the water temperature to rise is calculated = mcΔT 补 , the heat recovery power P i of each indoor unit is obtained, the preset time period is divided into multiple sub-time periods according to the preset ON time tON i and the preset OFF time tOFF i of each air conditioner indoor unit, the heat recovery power P 热Δti of each sub-time is calculated, and then the heat recovery heat Q 热 available for heating water in each sub-time period is calculated =∑(P 热Δti ×Δt i ). Moreover, the indoor unit system adopts the first heating water mode to heat water when running in the cooling mode in the preset time period.

[0117] If the scheduled water use time t 水use ≥ the last indoor unit shutdown time tOFF last , it indicates that the tOFF last , all indoor units are turned off, and the first demand duration of the subsequent second hot water mode is calculated . If Δt1≤(t 水use -tOFF last ) , the second hot water mode is started at t 制热水 =t 水use -Δt1, and the second hot water mode runs for Δtwater=Δt1; if Δt1>(t 水use -tOFF last ), the second hot water mode is started at t 制热水 =tOFF last , and the second hot water mode runs for Δt 水 =t 水use -tOFF last .

[0118] If the scheduled water use time t 水use <tOFF last , it indicates that the cooling mode will continue until the scheduled water use time t 水use , if the heat recovery heat Q 热 < the hot water demand heat Q 水 , the second hot water mode is started at t 制热水 =tON first -Δt1, t 制热水 >t now ; if the heat recovery heat Q 热 ≥ the hot water demand heat Q 水 , the second hot water mode does not need to be started, and the third hot water mode can directly meet the temperature requirement of the scheduled water use.

[0119] In a specific example, in combination with the flowchart Figure 13 , the user presets the heating mode in a preset time period, obtains the hot water capacity demand and the heating capacity demand of each indoor unit, and calculates the total heating water and heating capacity demand under different numbers of starting indoor units. Then, the starting time t less_start_k , the ending time t less_end_k , and the duration Δt less of each target time period are recorded, all of which are less than or equal to the capacity demand upper limit minus the hot water capacity demand. From the scheduled water use time, the time period duration Δt less is accumulated from the back to the front, and the time when the accumulated duration is greater than or equal to the second demand duration Δt2 is recorded as t over, △t2 is calculated according to the water heater demand heat and the hot water heating power from the current water temperature to the scheduled water temperature. From t over , the indoor unit system runs in the heating mode, the indoor unit system runs in the standby mode, and the indoor unit system runs in the heating mode. i , the indoor unit system runs in the standby mode, and the indoor unit system runs in the heating mode. max , the indoor unit system runs in the standby mode, and the indoor unit system runs in the heating mode. 水 , the indoor unit system runs in the standby mode, and the indoor unit system runs in the heating mode. less_start_k , the indoor unit system runs in the standby mode, and the indoor unit system runs in the heating mode. less_end_k , the indoor unit system runs in the standby mode, and the indoor unit system runs in the heating mode. less_start_k , the indoor unit system runs in the standby mode, and the indoor unit system runs in the heating mode. less_end_k , the indoor unit system runs in the standby mode, and the indoor unit system runs in the heating mode.

[0120] In one specific example, in combination with the flowchart, if it is determined according to the on-off information of the indoor unit system that no indoor unit system is turned on within the preset time period, the scheduled water heating can only be completed by the second hot water heating mode. At this time, the hot water heating demand duration is determined according to the water heater demand heat and the hot water heating power of the unit, and the time corresponding to the hot water heating demand duration before the scheduled water use time is the hot water heating time of the second hot water heating mode, and the hot water heating demand duration is the hot water heating duration of the second hot water heating mode. Figure 14 It should be noted that the hot water heating power mentioned in the embodiment can be a fixed power, or can be related to the historical outdoor average temperature in the preset time period, which is obtained through experiments during product development and stored in the outdoor unit memory chip. The hot water heating power of the hot water heating mode under different outdoor environment temperatures is different, and the higher the outdoor environment temperature, the higher the heating power, which is obtained through experiments during product development and stored in the outdoor unit memory chip.

[0121] The embodiment also provides an electronic device including one or more processors and a non-transitory computer-readable storage medium having program instructions stored therein, when the one or more processors execute the program instructions, the one or more processors are configured to implement the heat management method mentioned in the foregoing.

[0122] Specifically, as shown in the figure, the electronic device includes a processor 100, at least one communication bus 200, a user interface 300, at least one external communication interface 400, and a memory 500. The communication bus 200 is configured to realize the connection and communication between the components. The user interface 300 can include a display screen, and the external communication interface 400 can include a standard wired interface and a wireless interface. The memory 500 stores the heat management method of the air conditioner water heater unit. The processor 100 is configured to implement the heat management method stored in the memory 500.

[0123] Figure 15

[0124] ​​The embodiment further provides an air conditioner and water heater system, which comprises the air conditioner and water heater unit and the electronic device.

[0125] In several embodiments provided in the present application, it should be understood that the disclosed technical contents can be implemented in other manners. The above described device embodiments are merely illustrative, for example, the division of the units can be a logical function division, and actual implementation can be in another manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, units or modules, and can be electrical or other forms.

[0126] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place or distributed on a plurality of units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0127] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0128] In the above embodiments, all or part can be implemented by software, hardware, firmware, or any combination thereof. When implemented by software, all or part can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed by a computer, the computer instructions generate all or part of the processes or functions described in the embodiments of the present application. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center through wired (for example: coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example: infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium accessible by a computer, or a data storage device such as a server, data center, etc. integrated with one or more available media. The available medium can be a magnetic medium (for example: floppy disk, hard disk, magnetic tape), an optical medium (for example: digital versatile disc (DVD)), or a semiconductor medium (for example: solid state disk (SSD)), etc. It should be noted that the computer-readable storage medium mentioned in the embodiments of the present application can be a non-volatile storage medium, in other words, it can be a non-transitory storage medium. It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data for analysis, stored data, displayed data, etc.) and signals involved in the embodiments of the present application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards of relevant countries and regions.

[0129] The above only describes the preferred embodiments of the present application. It should be noted that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. An air conditioning water heater unit, characterized in that, The air conditioning water heater unit includes: An air conditioning module includes an outdoor unit and an indoor unit system, the indoor unit system including at least one indoor unit, the indoor unit including a first heat exchanger, and the outdoor unit including a second heat exchanger; A water heater includes a water tank and a third heat exchanger, the third heat exchanger being thermally coupled to the water tank; at least one of the first heat exchanger and the second heat exchanger cooperates with the third heat exchanger to form multiple hot water production modes; The controller is configured to determine a hot water production strategy based on the heat demand of the water heater, the first parameter of the unit within a preset time period, the scheduled water usage time, and the on / off time of the indoor unit system. The hot water production strategy includes a hot water production mode and / or hot water production parameters. The heat demand of the water heater is the heat required to heat the water in the tank from the current water temperature to the preset water temperature; the preset time period is the time period between the scheduled water usage time and the current time; the first parameter is the heat recovery heat that the unit can use to make hot water in the room when it is in cooling mode, or the total capacity requirement that the unit can meet for both heating and hot water production when it is in heating mode.

2. The air conditioning water heater unit according to claim 1, characterized in that, The hot water production mode includes a first hot water production mode and a second hot water production mode. The first hot water production mode is a mode in which hot water is produced using a refrigerant flow path where the first heat exchanger is an evaporator and the third heat exchanger is a condenser. The second hot water production mode is a mode in which hot water is produced using a refrigerant flow path where the second heat exchanger is an evaporator and the third heat exchanger is a condenser. The controller is further configured to: In cooling mode, since the first parameter is less than the heat demand of the water heater, the first hot water production mode and the second hot water production mode are used in combination to produce hot water. The hot water production parameters of the second hot water production mode are determined according to the heat demand of the water heater, the first parameter, the scheduled water use time, and the on / off time of the indoor unit system. The hot water production parameters include the target hot water production time and the target hot water production duration.

3. The air conditioning water heater unit according to claim 1, characterized in that, The hot water production mode includes a second hot water production mode and a third hot water production mode. The second hot water production mode is a mode in which hot water is produced using a refrigerant flow path where the second heat exchanger is an evaporator and the third heat exchanger is a condenser. The third hot water production mode is a mode in which hot water is produced using a refrigerant flow path where the second heat exchanger is an evaporator and both the first and third heat exchangers are condensers. The controller is further configured to: In heating mode, if the first parameter is less than or equal to the upper limit of the unit's capacity requirement, and the shutdown time of the indoor unit system is later than the scheduled water usage time, at least the third hot water production mode shall be used to produce hot water, and the hot water production parameters of the third hot water production mode shall be determined according to the heat demand of the water heater, the scheduled water usage time, and the on / off time of the indoor unit system. Alternatively, based on the fact that the first parameter is less than or equal to the upper limit of the unit's capacity requirement, and the shutdown time of the indoor unit system is earlier than the scheduled water usage time, the second hot water production mode and the third hot water production mode are used in combination to produce hot water, and the hot water production parameters of the second hot water production mode and the third hot water production mode are determined according to the heat demand of the water heater, the scheduled water usage time, and the on / off time of the indoor unit system, respectively. The hot water production parameters include the target hot water production time and the target hot water production duration.

4. A heat management method for the hot water production process of an air conditioning water heater unit, characterized in that, The heat management method is applied to the air conditioning water heater unit according to any one of claims 1-3, and the heat management method includes: Determine the water heater's required heat output and the first parameter of the indoor unit system within a preset time period; The hot water production strategy is determined based on the water heater's heat demand, the first parameter, the scheduled water usage time, and the on / off time of the indoor unit system.

5. The heat management method for the hot water production process of a water heater unit according to claim 4, characterized in that, Based on the water heater's heat demand, the first parameter, the scheduled water usage time, and the indoor unit system's on / off times, a hot water production strategy is determined, including: According to the unit operating in cooling mode during a preset time period, the first hot water production mode is activated, and hot water is produced using a refrigerant flow path with the first heat exchanger as an evaporator and the third heat exchanger as a condenser. If the first parameter is less than the heat demand of the water heater, the heat production parameters of the second hot water production mode are determined based on the heat demand of the water heater, the first parameter, the scheduled water use time, and the on / off time of the indoor unit system. According to the hot water production parameters of the second hot water production mode, the second hot water production mode is activated, and hot water is produced using a refrigerant flow path with the second heat exchanger as the evaporator and the third heat exchanger as the condenser.

6. The heat management method for the hot water production process of a water heater unit according to claim 5, characterized in that, The hot water production parameters for the second hot water production mode are determined based on the water heater's heat demand, the first parameter, the scheduled water usage time, and the on / off time of the indoor unit system, including: The first required duration of the second hot water production mode is determined based on the heat demand of the water heater and the first parameter. The target hot water production time and target hot water production duration of the second hot water production mode are determined based on the first demand duration, the scheduled water usage time, and the on / off time of the indoor unit system.

7. The heat management method for the hot water production process of a water heater unit according to claim 6, characterized in that, The target hot water production time and target hot water production duration of the second hot water production mode are determined based on the first demand duration, the scheduled water usage time, and the on / off time of the indoor unit system, including: Based on the fact that the scheduled water usage time is not earlier than the shutdown time of the indoor unit system, a first duration between the shutdown time of the indoor unit system and the scheduled water usage time is determined; Based on the first required duration and the first duration, the target hot water production time and the target hot water production duration are determined.

8. The heat management method for the hot water production process of a water heater unit according to claim 7, characterized in that, Based on the first demand duration and the first duration, the target hot water production time and the target hot water production duration are determined, including: Based on the first demand duration being less than or equal to a first duration, a first moment is determined as the target hot water production moment, and the first demand duration is determined as the target hot water production duration, wherein the first moment is the moment corresponding to the first demand duration before the scheduled water usage moment; or... Based on the fact that the first demand duration is greater than the first duration, the shutdown time of the indoor unit system is determined as the target hot water production time, and the first duration is determined as the target hot water production duration.

9. The heat management method for the hot water production process of a water heater unit according to claim 8, characterized in that, If the first demand duration is greater than the first duration, and the first demand duration is greater than the first set duration, an electric heating device is used to assist in hot water production while the second hot water production mode is used, and the first set duration is greater than the first duration.

10. The heat management method for the hot water production process of a water heater unit according to claim 6, characterized in that, The target hot water production time and target hot water production duration of the second hot water production mode are determined based on the first demand duration, the scheduled water usage time, and the on / off time of the indoor unit system, including: Based on the fact that the scheduled water usage time is earlier than the shutdown time of the indoor unit system, a second time is determined, which is the time corresponding to the first demand duration before the startup time of the indoor unit system. Based on the fact that the second time is later than the current time, the second time is determined as the target hot water production time, and the first required duration is determined as the target hot water production duration; or, based on the fact that the second time is not later than the current time, the current time is determined as the target hot water production time, and the second duration is determined as the target hot water production duration, wherein the second duration is the duration between the current time and the start-up time of the indoor unit system.

11. The heat management method for the hot water production process of a water heater unit according to claim 10, characterized in that, If the second time is not later than the current time, and the first demand duration is greater than the second set duration, an electric heating device is used to assist in hot water production while using the second hot water production mode, and the second set duration is greater than the second duration.

12. The heat management method for the hot water production process of an air conditioning water heater unit according to claim 4, characterized in that, The hot water production strategy is determined based on the water heater's heat demand, the first parameter, the scheduled water usage time, and the on / off time of the indoor unit system, including: The second required duration for hot water production is determined based on the heat demand of the water heater. Based on the start-up and shutdown times of each indoor unit in the indoor unit system, the preset time period is divided into multiple sub-time periods; At least one target time period is determined from each sub-time period, in which the first parameter is less than or equal to the upper limit of the unit's capacity demand; Based on the scheduled water usage time, the second required duration, and the at least one target time period, at least the target hot water production time and target hot water production duration of the third hot water production mode are determined.

13. The heat management method for the hot water production process of an air conditioning water heater unit according to claim 12, characterized in that, Based on the reserved water usage time, the second demand duration, and the at least one target time period, at least the target hot water production time and target hot water production duration of the third hot water production mode are determined, including: Starting from the scheduled water usage time and moving backward, select at least one sub-target duration from at least one target time period, and the sum of at least one sub-target duration is the same as the second demand duration; If at least one sub-target duration includes the first sub-target duration of the indoor unit system operating in heating mode, then a third hot water production mode is used to produce hot water during the second sub-target duration. This hot water production utilizes a refrigerant flow path where both the first and third heat exchangers act as condensers, and the second heat exchanger acts as an evaporator. The target hot water production time of the third hot water production mode includes the start time corresponding to each of the first sub-target durations, and the target running time of the third hot water production time includes each of the first sub-target durations; and / or If at least one sub-target duration includes the second sub-target duration of the indoor unit system standby, hot water is produced in the second sub-target duration using the second hot water production mode. Hot water is produced using a refrigerant flow path with the third heat exchanger as the condenser and the second heat exchanger as the evaporator. The target hot water production time of the second hot water production mode includes the start time corresponding to each second sub-target duration, and the target running time of the second hot water production time includes each second sub-target duration.

14. The heat management method for the hot water production process of an air conditioning water heater unit according to any one of claims 4-13, characterized in that, In cooling mode, the method further includes: Determine the historical outdoor temperature data within the preset time period, and determine the historical average outdoor temperature based on the historical outdoor temperature data. Based on the current water temperature and the historical average outdoor temperature, determine the upper limit of the recovery water temperature compensation; The compensating heat of the water heater is determined based on the upper limit of the recovered water temperature compensation. Obtain the total heat recovery of the indoor unit system during the preset time period; The total heat recovery is determined as the first parameter based on the condition that the total heat recovery is less than or equal to the compensation heat of the water heater; or, the compensation heat of the water heater is determined as the first parameter based on the condition that the total heat recovery is greater than the compensation heat of the water heater. The total heat recovery is the sum of the heat recovery of each indoor unit in the preset time period. The heat recovery of each indoor unit in the preset time period is related to the preset temperature, inner ring temperature, cooling capacity, and cooling operation duration of each indoor unit in the preset time period.

15. The heat management method for the hot water production process of an air conditioning water heater unit according to any one of claims 4-13, characterized in that, In heating mode, the method further includes: Determine the historical outdoor temperature data within the preset time period, and determine the historical average outdoor temperature based on the historical outdoor temperature data. The hot water capacity requirement is determined based on the difference between the scheduled water temperature and the current water temperature, as well as the historical average outdoor temperature; the indoor heating capacity requirement is determined based on the difference between the actual inner ring temperature and the target inner ring temperature corresponding to each indoor unit of the indoor unit system, as well as the historical average outdoor temperature. The first parameter is determined by the sum of the hot water production capacity requirement and the heating capacity requirement.

16. An electronic device comprising one or more processors and a non-transitory computer-readable storage medium storing program instructions, wherein when the one or more processors execute the program instructions, the one or more processors are configured to implement the thermal management method provided by any one of claims 4-15.

17. An air conditioning water heater system, characterized in that, It includes the air conditioning water heater unit according to any one of claims 1-3 and the electronic device provided in claim 16.

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