Heating and ventilation system, heat storage control method, storage medium and electronic equipment

Abstract

The invention discloses a heating and ventilation system, a heat storage control method, a storage medium and electronic equipment, the heating and ventilation system comprises a heat pump outdoor unit and a phase change heat storage module, an energy charging flow path of the phase change heat storage module is provided with an energy charging inlet and at least two energy charging outlets, and the at least two energy charging outlets are sequentially arranged at intervals in the direction away from the energy charging inlet; the energy charging outlet, farthest from the energy charging inlet, in the at least two energy charging outlets is a first energy charging outlet, the energy charging outlets, except the first energy charging outlet, in the at least two energy charging outlets are second energy charging outlets, the energy charging inlet is connected with a water outlet of the heat pump outdoor unit, and the second energy charging outlets are connected with a water inlet of the heat pump outdoor unit. The first energy charging outlet is connected with a water inlet of the heat pump outdoor unit; the energy charging inlet and the first energy charging outlet form an inlet and an outlet of an energy charging flow path of the phase change heat storage module in the first working mode, and the energy charging inlet and any second energy charging outlet form an inlet and an outlet of an energy charging flow path of the phase change heat storage module in the second working mode.

Description

Technical Field

[0001] The present application relates to the field of HVAC technology, and in particular to a HVAC system, a heat storage control method, a storage medium and an electronic device. Background Art

[0002] In the related technology, the phase change thermal storage module can use the phase change absorption / release characteristics to heat tap water to provide users with comfortable domestic hot water. Compared with the traditional water storage heat pump water heater, the energy storage water heating device developed based on the phase change thermal storage module has the advantage of a smaller volume.

[0003] The phase change thermal storage module can not only realize the heat storage process by indirect heat exchange between hot water and phase change materials, but also realize the heat release process by indirect heat exchange between cold water and phase change materials. However, in the scenario of designing heat storage conditions, since the phase change material absorbs heat evenly, in the early stage of the heat storage process, the heat stored in the phase change material cannot meet the demand for releasing hot water of a certain temperature. Therefore, there is a problem that the phase change thermal storage module cannot quickly release hot water of a certain temperature. Summary of the invention

[0004] The embodiments of the present application provide a HVAC system, a heat storage control method, a storage medium and an electronic device. The technical solution is as follows:

[0005] In a first aspect, an embodiment of the present application provides a HVAC system, the HVAC system comprising:

[0006] A heat pump external unit, the heat pump external unit comprising a control unit;

[0007] and a phase-change thermal storage module, wherein the phase-change thermal storage module has a charging flow path, the charging flow path has a charging inlet and at least two charging outlets, the at least two charging outlets are sequentially spaced apart in a direction away from the charging inlet, the charging outlet farthest from the charging inlet among the at least two charging outlets is a first charging outlet, and the charging outlets other than the first charging outlet among the at least two charging outlets are second charging outlets, the charging inlet is connected to the water outlet of the heat pump external unit, the second charging outlet is connected to the water inlet of the heat pump external unit, and the first charging outlet is connected to the water inlet of the heat pump external unit; the phase-change thermal storage module has a first working mode and a second working mode, the charging inlet and the first charging outlet constitute the inlet and outlet of the charging flow path in the first working mode, and the charging inlet and any one of the second charging outlets constitute the inlet and outlet of the charging flow path in the second working mode;

[0008] The control unit is configured as follows:

[0009] If the hot water making mode set by the user is the second working mode, the charging flow path in the second working mode is controlled to be in a connected state, phase change heat storage treatment is performed based on the charging flow path in the second working mode, the water inlet temperature of the heat pump outdoor unit is monitored, the charging flow path in the first working mode is controlled to be in a connected state based on the water inlet temperature, and phase change heat storage treatment is performed based on the charging flow path in the first working mode;

[0010] If the hot water making mode set by the user is the first working mode, the charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage processing is performed based on the charging flow path in the first working mode.

[0011] In a certain possible implementation, the charging flow path has a charging inlet, a first charging outlet and at least two second charging outlets, the second charging outlet farthest from the first charging outlet among the at least two second charging outlets is a third charging outlet, the second charging outlet other than the third charging outlet among the at least two second charging outlets is a fourth charging outlet, the charging inlet and the third charging outlet constitute the inlet and outlet of the first charging flow path under the second working mode, and the charging inlet and any one of the fourth charging outlets constitute the inlet and outlet of the second charging flow path under the second working mode.

[0012] In a possible implementation manner, the control unit is configured as follows:

[0013] If the hot water making mode set by the user is the second working mode, the first charging flow path in the second working mode is controlled to be in a connected state, phase change heat storage treatment is performed based on the first charging flow path in the second working mode, the water inlet temperature of the heat pump outdoor unit is monitored, and the second charging flow path in the second working mode is controlled to be in a connected state in sequence based on the water inlet temperature, phase change heat storage treatment is performed based on the second charging flow path in sequence, the charging flow path in the first working mode is controlled to be in a connected state based on the water inlet temperature, and phase change heat storage treatment is performed based on the charging flow path in the first working mode.

[0014] In a possible implementation manner, the control unit is configured as follows:

[0015] If the water inlet temperature is greater than or equal to the first temperature threshold, and the first duration is greater than or equal to the first duration threshold, the third charging flow path is controlled to be in a connected state, and phase change heat storage processing is performed based on the third charging flow path, and the third charging flow path is the second charging flow path closest to the first charging flow path among the second charging flow paths in the second working mode;

[0016] monitoring the temperature increase value of the water inlet temperature, and if the temperature increase value is a second temperature threshold, and the water inlet temperature after the temperature increase is less than a third temperature threshold, sequentially controlling the second charging flow paths other than the third charging flow path to be in a connected state, and sequentially performing phase change heat storage processing based on the second charging flow paths other than the third charging flow path;

[0017] If the water inlet temperature is greater than or equal to the third temperature threshold, and the second duration is greater than or equal to the second duration threshold, the charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage processing is performed based on the charging flow path in the first working mode;

[0018] The first duration is the duration during which the water inlet temperature is greater than or equal to the first temperature threshold, and the second duration is the duration during which the water inlet temperature is greater than or equal to the third temperature threshold.

[0019] In a possible implementation manner, the control unit is configured as follows:

[0020] Calculating the difference between the preset material phase change temperature and the first preset temperature to obtain a first temperature threshold;

[0021] The sum of the preset material phase change temperature and the second preset temperature is calculated to obtain a second temperature threshold.

[0022] In a possible implementation manner, the charging flow path has a charging inlet, a first charging outlet, and a second charging outlet, and the control unit is configured as follows:

[0023] If the water inlet temperature is greater than or equal to a third temperature threshold, and the third duration is greater than or equal to a third duration threshold, the charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage processing is performed based on the charging flow path in the first working mode;

[0024] The third duration is the duration during which the water inlet temperature is greater than or equal to the third temperature threshold.

[0025] In a certain possible implementation manner, the phase change heat storage module also includes a first electrically controlled switch and at least one second electrically controlled switch, wherein the first end of the first electrically controlled switch is connected to the water inlet of the heat pump external unit, the second end of the first electrically controlled switch is connected to the first charging outlet, the third end of the first electrically controlled switch is connected to the first end of each of the second electrically controlled switches, and the second end of each of the second electrically controlled switches is connected to the second charging outlet controlled by each of the second electrically controlled switches.

[0026] In a possible implementation manner, the control unit is configured as follows:

[0027] Controlling the charging flow path in the second working mode to be in a connected state by using the first electronically controlled switch and any one of the second electronically controlled switches;

[0028] The charging flow path in the first working mode is controlled to be in a connected state by the first electronically controlled switch.

[0029] In a certain possible implementation, when the charging flow path has one charging inlet and two charging outlets, the phase change thermal storage module includes two third electrically-controlled switches, a first end of each of the third electrically-controlled switches is connected to the charging outlet controlled by each of the third electrically-controlled switches, and a second end of each of the third electrically-controlled switches is connected to the water inlet of the heat pump external unit.

[0030] In a possible implementation manner, the control unit is configured as follows:

[0031] Controlling the charging flow path in the second working mode to be in a connected state by the two third electronically controlled switches;

[0032] The charging flow path in the first working mode is controlled to be in a connected state by the two third electronically controlled switches.

[0033] In a second aspect, an embodiment of the present application provides a heat storage control method, which is applied to a HVAC system, wherein the HVAC system comprises:

[0034] Heat pump outdoor unit;

[0035] and a phase-change thermal storage module, wherein the phase-change thermal storage module has a charging flow path, the charging flow path has a charging inlet and at least two charging outlets, the at least two charging outlets are sequentially spaced in a direction away from the charging inlet, the charging outlet farthest from the charging inlet among the at least two charging outlets is a first charging outlet, and the charging outlets other than the first charging outlet among the at least two charging outlets are second charging outlets, the charging inlet is connected to the water outlet of the heat pump external unit, the second charging outlet is connected to the water inlet of the heat pump external unit, and the first charging outlet is connected to the water inlet of the heat pump external unit; the phase-change thermal storage module has a first working mode and a second working mode, the charging inlet and the first charging outlet are in a connected state to constitute the inlet and outlet of the charging flow path in the first working mode, and the charging inlet and any one of the second charging outlets constitute the inlet and outlet of the charging flow path in the second working mode;

[0036] The method comprises:

[0037] If the hot water making mode set by the user is the second working mode, the charging flow path in the second working mode is controlled to be in a connected state, phase change heat storage treatment is performed based on the charging flow path in the second working mode, the water inlet temperature of the heat pump outdoor unit is monitored, the charging flow path in the first working mode is controlled to be in a connected state based on the water inlet temperature, and phase change heat storage treatment is performed based on the charging flow path in the first working mode;

[0038] If the hot water making mode set by the user is the first working mode, the charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage processing is performed based on the charging flow path in the first working mode.

[0039] In a third aspect, an embodiment of the present application provides a computer storage medium, wherein the computer storage medium has a plurality of instructions, and the instructions are suitable for being loaded by a processor and executing the above-mentioned method.

[0040] In a fourth aspect, an embodiment of the present application provides a heating device, which may include: a memory and a processor; wherein the memory stores a computer program, and the computer program is suitable for being loaded by the memory and executing the above method.

[0041] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0042] The HVAC system provided in the embodiment of the present application may include a heat pump external unit and a phase change thermal storage module. The charging flow path of the phase change thermal storage module is configured to have one charging inlet and at least two charging outlets, so that the charging inlet and the charging outlets at different positions can constitute the charging flow path of the phase change thermal storage module in different working modes. In this way, when the user sets the hot water making mode to the second working mode, since the path length of the charging flow path in the second working mode is shorter than the path length of the charging flow path in the first working mode, the charging flow path in the second working mode is first controlled to be in a connected state, and then the charging flow path in the first working mode is controlled based on the water inlet temperature of the heat pump external unit. The flow path is in a connected state, so that in the early stage of the heat storage process, part of the phase change material corresponding to the charging flow path in the second working mode with a short path length can be fully utilized for heat storage, so that part of the phase change material can quickly store enough heat to release hot water of a certain temperature, thereby improving the heat release rate of the phase change heat storage module in the early stage of heat storage. Subsequently, the charging flow path in the first working mode is controlled to be in a connected state based on the water inlet temperature of the heat pump external unit, so that in the middle and / or late stage of the heat storage process, all the phase change materials corresponding to the charging flow path in the first working mode with the longest path length can be fully utilized for heat storage, so as to store more heat and keep the temperature of the hot water stable. Therefore, the embodiment of the present application can not only improve the heat release rate of the phase change heat storage module in the early stage of heat storage, but also keep the temperature of the hot water stable after the hot water releases heat quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0044] Figure 1 is a structural schematic diagram of a HVAC system provided in an embodiment of the present application;

[0045] Figure 2 is a structural schematic diagram of another HVAC system provided in an embodiment of the present application;

[0046] Figure 3 is a structural schematic diagram of another HVAC system provided in an embodiment of the present application;

[0047] Figure 4 It is a flow chart of a heat storage control method provided in an embodiment of the present application;

[0048] Figure 5 is a structural schematic diagram of a heat storage control device provided in an embodiment of the present application;

[0049] Figure 6 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] In order to make the purpose, features, and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0051] In the description of the present application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood in specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are an "or" relationship.

[0052] The present application is described in detail below with reference to specific embodiments.

[0053] See also Figure 1 , is a schematic diagram of the structure of a HVAC system provided in an embodiment of the present application. Figure 1 As shown, the HVAC system may include a heat pump external unit 100 and a phase change thermal storage module 200, wherein:

[0054] The heat pump external unit 100 includes a control unit 110, a water inlet 122, and a water outlet 124;

[0055] The phase change thermal storage module 200 includes a charging inlet 212 and at least two charging outlets 214. The at least two charging outlets 214 are arranged in sequence in a direction away from the charging inlet 212. The charging outlet farthest from the charging inlet 212 among the at least two charging outlets 214 is the first charging outlet. The charging outlets other than the first charging outlet among the at least two charging outlets 214 are the second charging outlets. The charging inlet 212 is connected to the water outlet 124, the second charging outlet is connected to the water inlet 122, and the first charging outlet is connected to the water inlet 122.

[0056] It is understandable that the heat pump external unit is used to provide a heat source, and the heat pump external unit may be configured with various types of heat source modules, such as an electric heating module, a solar heating module, a water source heat exchange module, and an air source heat exchange module, etc. In one or more embodiments of the present application, the heat pump external unit is used to provide hot water.

[0057] The phase change thermal storage module is used to store or release heat based on the built-in phase change material. The phase change thermal storage module can use the hot water provided by the heat pump external unit to exchange heat indirectly with the phase change material to achieve heat storage, and can also use the heat stored in the phase change material to indirectly exchange heat with the cold water of the water unit to achieve heat release.

[0058] The phase change thermal storage module has a first working mode and a second working mode. The charging inlet and the first charging outlet can constitute the inlet and outlet of the charging flow path in the first working mode, and the charging inlet and any one of the second charging outlets can constitute the inlet and outlet of the charging flow path in the second working mode.

[0059] In one or more embodiments of the present application, the charging inlet 212 and the water outlet 124 can be connected through an electrically controlled switch, any second charging outlet and the water inlet 122 can also be connected through an electrically controlled switch, and the first charging outlet and the water inlet 122 can also be connected through an electrically controlled switch. Specifically, when the electrically controlled switch between the charging inlet 212 and the water outlet 124 is in an on state, and the electrically controlled switch between the first charging outlet and the water inlet 122 is in an on state, the charging flow path in the first working mode is in a connected state, otherwise, when the electrically controlled switch between the charging inlet 212 and the water outlet 124 is in a closed state, and / or the electrically controlled switch between the first charging outlet and the water inlet 122 is in a closed state, the charging flow path in the first working mode is in a disconnected state. When the electric-controlled switch between the charging inlet 212 and the water outlet 124 is in the on state, and the electric-controlled switch between any second charging outlet and the water inlet 122 is in the on state, any charging flow path in the second working mode is in a connected state; otherwise, when the electric-controlled switch between the charging inlet 212 and the water outlet 124 is in the off state, and / or the electric-controlled switches between all second charging outlets and the water inlet 122 are in the off state, all charging flow paths in the second working mode are in a disconnected state.

[0060] In one or more embodiments of the present application, the capacity of the phase change material corresponding to the charging flow path in the first working mode is greater than the capacity of the phase change material corresponding to any one of the charging flow paths in the second working mode. When the charging flow paths in the first working mode or the second working mode are in a connected state, the phase change thermal storage module can exchange energy with hot water from the heat pump external unit through the phase change material corresponding to the charging flow path to store a certain amount of heat.

[0061] Below Figure 1 The working principle of the HVAC system shown is explained:

[0062] Specifically, the control unit is configured to: if the hot water making mode set by the user is the second working mode, control the charging flow path in the second working mode to be in a connected state, perform phase change heat storage processing based on the charging flow path in the second working mode, monitor the water inlet temperature of the heat pump outdoor unit, control the charging flow path in the first working mode to be in a connected state based on the water inlet temperature, and perform phase change heat storage processing based on the charging flow path in the first working mode;

[0063] If the hot water making mode set by the user is the first working mode, the charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage processing is performed based on the charging flow path in the first working mode.

[0064] Among them, when the phase change heat storage module produces hot water of the same temperature, the heating time consumed by the second working mode is less than the heating time consumed by the first working mode. The second working mode can be understood as a fast hot water mode, and the first working mode can be understood as a conventional hot water mode.

[0065] The water inlet temperature refers to the temperature measured by a temperature sensor installed at the water inlet of the heat pump outdoor unit.

[0066] In some embodiments, a hot water making mode set by a user is obtained. When the hot water making mode is the second working mode, an electric control switch between the charging inlet and the water outlet of the heat pump external unit can be controlled to be in an on state, and an electric control switch between the second charging outlet farthest from the first charging outlet and the water inlet of the heat pump external unit can be controlled to be in an on state, so that the charging flow path in the second working mode formed by the charging inlet and the second charging outlet farthest from the first charging outlet is in a connected state, and phase change heat storage processing is performed based on the charging flow path in the second working mode.

[0067] Furthermore, when it is monitored that the water inlet temperature is greater than or equal to the third temperature threshold, and the second duration is greater than or equal to the second duration threshold, the electric control switch between the charging inlet and the water outlet of the heat pump external unit can be controlled to be in an on state, and the electric control switch between the first charging outlet and the water inlet of the heat pump external unit can be controlled to be in an on state, so that the charging flow path in the first working mode is in a connected state, and phase change heat storage treatment is performed based on the charging flow path in the first working mode. Among them, the third temperature threshold can be set to the sum of the phase change temperature when the phase change material built into the phase change heat storage module absorbs heat and the second preset temperature. The second preset temperature can be set based on the actual application environment, and the value range of the second preset temperature can be 3 to 5 degrees Celsius. Among them, the second duration refers to the duration when the water inlet temperature is greater than or equal to the third temperature threshold.

[0068] When it is monitored that the water inlet temperature is lower than the third temperature threshold, in the scenario where the phase change heat storage module has multiple second charging flow paths under the second working mode, the electric control switch between the charging inlet and the water outlet of the heat pump external unit can be controlled to be in the on state, and the electric control switch between the second charging outlet second far away from the first charging outlet and the water inlet of the heat pump external unit can be controlled to be in the on state in turn, so that the charging flow path under the second working mode formed by the water inlet and the second charging outlet second far away from the first charging outlet is connected in turn, and phase change heat storage treatment is performed on the charging flow path under the second working mode formed by the second charging outlet second far away from the first charging outlet and the water inlet in turn, until it is monitored that the water inlet temperature is greater than or equal to the third temperature threshold, and the second duration is greater than or equal to the second duration threshold, the charging flow path under the first working mode is controlled to be connected, and phase change heat storage treatment is performed on the charging flow path under the first working mode. Among them, the second charging outlet that is second farthest from the first charging outlet includes other second charging outlets except the second charging outlet that is farthest from the first charging outlet. For example, the second charging outlet that is second farthest from the first charging outlet may include the second charging outlet that is second farthest from the first charging outlet, the second charging outlet that is third farthest from the first charging outlet, the second charging outlet that is fourth farthest from the first charging outlet, and so on.

[0069] Alternatively, when it is monitored that the water inlet temperature is less than the third temperature threshold, in the scenario where the phase change thermal storage module has a second charging flow path in the second working mode, the phase change thermal storage module has and only has one second charging outlet, and the electric control switch between the charging inlet and the water outlet of the heat pump external unit is kept in an on state, and the electric control switch between the second charging outlet farthest from the first charging outlet and the water inlet of the heat pump external unit is kept in an on state, so that the charging flow path in the second working mode formed by the first charging outlet and the second charging outlet is in a connected state, and phase change thermal storage processing is performed based on the charging flow path in the second working mode. Optionally, in the case where the phase change thermal storage module has and only has one second charging outlet, assuming that the height of the phase change thermal storage module is h, the range of the vertical distance between the second charging outlet and the bottom of the phase change thermal storage module can be set to 0.5h~0.7h.

[0070] In some other embodiments, the phase change thermal storage module has a charging flow path having a charging inlet, a first charging outlet, and a second charging outlet, and the control unit is configured as follows:

[0071] If the water inlet temperature is greater than or equal to the third temperature threshold, and the third duration is greater than or equal to the third duration threshold, the charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage treatment is performed based on the charging flow path in the first working mode; wherein the third duration is the duration during which the water inlet temperature is greater than or equal to the third temperature threshold.

[0072] In the HVAC system provided in the embodiment of the present application, the charging flow path of the phase change thermal storage module is configured to have one charging inlet and at least two charging outlets, so that the charging inlet and the charging outlets at different positions can constitute the charging flow path of the phase change thermal storage module in different working modes. In this way, when the user sets the hot water making mode to the second working mode, since the path length of the charging flow path in the second working mode is shorter than the path length of the charging flow path in the first working mode, the charging flow path in the second working mode is first controlled to be in a connected state, and then the charging flow path in the first working mode is controlled to be in a connected state based on the water inlet temperature of the heat pump outdoor unit. state, so that in the early stage of the heat storage process, part of the phase change material corresponding to the charging flow path in the second working mode with a short path length can be fully utilized for heat storage, so that part of the phase change material can quickly store enough heat to release hot water of a certain temperature, thereby improving the heat release rate of the phase change heat storage module in the early stage of heat storage. Subsequently, the charging flow path in the first working mode is connected based on the water inlet temperature control of the heat pump external unit, so that in the middle and / or late stage of the heat storage process, all the phase change materials corresponding to the charging flow path in the first working mode with the longest path length can be fully utilized for heat storage, so as to store more heat and keep the temperature of the hot water stable. Therefore, the embodiment of the present application can not only improve the heat release rate of the phase change heat storage module in the early stage of heat storage, but also keep the temperature of the hot water stable after the hot water releases heat quickly.

[0073] See also Figure 2 , is a schematic diagram of the structure of a HVAC system provided in an embodiment of the present application. Figure 2 As shown, the HVAC system may include a heat pump external unit 100 and a phase change thermal storage module 200, wherein:

[0074] The heat pump external unit 100 includes a control unit 110, a water inlet 122, and a water outlet 124;

[0075] The phase change thermal storage module 200 includes a charging inlet 212, at least two charging outlets 214, a first electrically controlled switch 222, and at least one second electrically controlled switch 224. The at least two charging outlets 214 are arranged in sequence in a direction away from the charging inlet 212. The charging outlet farthest from the charging inlet 212 among the at least two charging outlets 214 is the first charging outlet, and the charging outlets other than the first charging outlet among the at least two charging outlets 214 are the second charging outlets. The first end of the first electrically controlled switch 222 is connected to the water inlet 122, the second end of the first electrically controlled switch 222 is connected to the first charging outlet, the third end of the first electrically controlled switch 222 is connected to the first end of each second electrically controlled switch 224, the second end of each second electrically controlled switch 224 is connected to the second charging outlet controlled by each second electrically controlled switch, and the charging inlet 212 is connected to the water outlet 124.

[0076] The first electrically controlled switch may be a control valve for changing the flow direction of the fluid medium, for example, the first electrically controlled switch may be an electric three-way valve or other control valve. The second electrically controlled switch may be an automation element for controlling the on and off of the fluid medium, for example, the second electrically controlled switch may be an element such as a solenoid valve.

[0077] In one or more embodiments of the present application, the phase change thermal storage module has a charging flow path having a charging inlet, a first charging outlet and at least two second charging outlets, the second charging outlet farthest from the first charging outlet among the at least two second charging outlets is the third charging outlet, the second charging outlet other than the third charging outlet among the at least two second charging outlets is the fourth charging outlet, the charging inlet and the third charging outlet constitute the inlet and outlet of the first charging flow path in the second working mode, the charging inlet and any one of the fourth charging outlets constitute the inlet and outlet of the second charging flow path in the second working mode, and the charging inlet and the first charging outlet constitute the inlet and outlet of the charging flow path in the first working mode.

[0078] In one or more embodiments of the present application, the capacity of the phase change material corresponding to the charging flow path in the first working mode is greater than the capacity of the phase change material corresponding to any one of the charging flow paths in the second working mode, and the capacity of the phase change material corresponding to the first charging flow path in the second working mode is less than the capacity of the phase change material corresponding to any one of the second charging flow paths in the second working mode. The capacity of the phase change material corresponding to the second charging flow path in the second working mode increases as the distance between the second charging flow path and the first charging flow path increases.

[0079] Below Figure 2 The working principle of the HVAC system shown is explained:

[0080] Specifically, the control unit is configured to: if the hot water making mode set by the user is the second working mode, control the first charging flow path in the second working mode to be in a connected state, perform phase change heat storage treatment based on the first charging flow path in the second working mode, monitor the water inlet temperature of the heat pump outdoor unit, sequentially control the second charging flow path in the second working mode to be in a connected state based on the water inlet temperature, perform phase change heat storage treatment based on the second charging flow path in turn, control the charging flow path in the first working mode to be in a connected state based on the water inlet temperature, and perform phase change heat storage treatment based on the charging flow path in the first working mode;

[0081] If the hot water making mode set by the user is the first working mode, the charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage processing is performed based on the charging flow path in the first working mode.

[0082] In a feasible implementation manner, the control unit is specifically configured to: if the water inlet temperature is greater than or equal to the first temperature threshold, and the first duration is greater than or equal to the first duration threshold, control the third charging flow path to be in a connected state, perform phase change heat storage processing based on the third charging flow path, and the third charging flow path is the second charging flow path closest to the first charging flow path among the second charging flow paths in the second working mode;

[0083] Monitor the temperature increase value of the water inlet temperature, and if the temperature increase value is the second temperature threshold, and the water inlet temperature after the temperature increase is less than the third temperature threshold, sequentially control the second charging flow path in the second working mode to be in a connected state, and sequentially perform phase change heat storage processing based on the second charging flow path;

[0084] If the water inlet temperature is greater than or equal to the third temperature threshold, and the second duration is greater than or equal to the second duration threshold, the charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage processing is performed based on the charging flow path in the first working mode;

[0085] The first duration is the duration during which the water inlet temperature is greater than or equal to the first temperature threshold, and the second duration is the duration during which the water inlet temperature is greater than or equal to the third temperature threshold.

[0086] Among them, the first temperature threshold can be set as the difference between the phase change temperature of the phase change material built into the phase change thermal storage module and the first preset temperature. The first preset temperature can be set based on the actual application environment, and the value range of the first preset temperature can be 3 to 5 degrees Celsius.

[0087] Among them, the above-mentioned temperature increase value refers to the temperature increase value of the water inlet temperature monitored during each switching of a new charging flow path for phase change heat storage treatment. It can be understood that the third flow path is the newly switched charging flow path. Before the phase change heat storage treatment is performed based on the third charging flow path, the latest value of the monitored water inlet temperature is represented as T1. During the phase change treatment based on the third charging flow path, the latest value of the monitored water inlet temperature is represented as T2. T2 is greater than T1, and the difference between T2 and T1 is the temperature increase value. The water inlet temperature after the temperature rise refers to the latest value of the water inlet temperature when the monitored temperature increase value is the second temperature threshold.

[0088] The second temperature threshold may be set as a fixed value, for example, the second temperature threshold may be set to 2 degrees Celsius.

[0089] The third charging flow path is controlled to be in a connected state, and phase change heat storage treatment is performed based on the third charging flow path. The implementation of this step can be: controlling the first end of the first electrically controlled switch to be in a connected state with the water inlet of the heat pump outdoor unit, controlling the second end of the first electrically controlled switch to be in a disconnected state, controlling the third end of the first electrically controlled switch and the first end of the second electrically controlled switch for controlling the third charging outlet to be in a disconnected state, controlling the third end of the first electrically controlled switch to be in a connected state with the fourth charging outlet for controlling the third charging flow path, and controlling the fourth charging outlet constituting the third charging flow path to be in a connected state with the second end of the second electrically controlled switch for controlling the fourth charging outlet constituting the third charging flow path, so that the third charging flow path is in a connected state, and phase change heat storage treatment is performed through the phase change material corresponding to the third charging flow path.

[0090] If the temperature increase value is the second temperature threshold, and the water inlet temperature after the temperature increase is less than the third temperature threshold, the second charging flow path in the second working mode is controlled to be in a connected state in sequence, and phase change heat storage treatment is performed in sequence based on the second charging flow path. The implementation of this step can be: since the number of second charging flow paths in the second working mode is at least one, when the number of second charging flow paths in the second working mode is at least two, the second charging flow path closest to the first charging flow path in the second working mode is the third charging flow path, then the second charging flow path in the second working mode may include the third charging flow path and at least two second charging flow paths other than the third charging flow path, and the at least two second charging flow paths other than the third charging flow path may include the second charging flow path that is the second farthest away from the first charging flow path, the second charging flow path that is the third farthest away from the first charging flow path, the third charging flow path that is the fourth farthest away from the first charging flow path, and so on. In the process of switching to a new charging flow path for phase change heat storage treatment each time, for example, in the process of switching to the third charging flow path for phase change heat storage treatment, when the temperature increase value is monitored to be the second temperature threshold, and the water inlet temperature after the temperature increase is still less than the third temperature threshold, the first end of the first electrically-controlled switch can be controlled to be in a connected state with the water inlet of the heat pump outdoor unit, the third end of the first electrically-controlled switch can be controlled to be in a disconnected state with the fourth charging outlet for controlling the third charging flow path, the third end of the first electrically-controlled switch can be controlled to be in a connected state with the fourth charging outlet for controlling the second charging flow path that is far away from the first charging flow path, the fourth charging outlet for the second charging flow path that is far away from the first charging flow path can be controlled to be in a connected state with the second end of the second electrically-controlled switch for controlling the fourth charging outlet for the second charging flow path that is far away from the first charging flow path, so that the second The second energizing flow path away from the first energizing flow path is in a connected state, and phase change heat storage treatment is performed through the phase change material corresponding to the second energizing flow path away from the first energizing flow path; by analogy, in the process of switching to the second energizing flow path constituting the second energizing flow path away from the first energizing flow path for phase change heat storage treatment, when the temperature increase value is monitored to be the second temperature threshold, and the water inlet temperature after the temperature increase is still less than the third temperature threshold, the second energizing flow path away from the first energizing flow path can be controlled to be in a connected state in the same manner as the above-mentioned control of the second energizing flow path away from the first energizing flow path to be in a connected state, and phase change heat storage treatment is performed through the phase change heat storage material corresponding to the second energizing flow path away from the first energizing flow path; by analogy, the subsequent process of switching to the second energizing flow path constituting the fourth energizing flow path away from the first energizing flow path for phase change heat storage treatment can refer to the above description and will not be described in detail here.

[0091] Therefore, the purpose of configuring the phase change heat storage module to have multiple charging flow paths under the second working mode is that when phase change heat storage treatment is performed based on the first charging flow path under the second working mode, the capacity of the phase change material corresponding to the first charging flow path under the second working mode is the smallest. At this time, it has a faster heat storage speed, which can enable the hot water to reach a certain temperature faster. After the hot water reaches a certain temperature, more heat is needed. Then, it can be gradually switched to the second charging flow path with a larger capacity of phase change material to ensure that there is enough heat to keep the temperature of the hot water stable.

[0092] The charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage treatment is performed based on the charging flow path in the first working mode. This step can be implemented as follows: the first end of the first electronically controlled switch is controlled to be in a connected state with the water inlet of the heat pump outdoor unit, the second end of the first electronically controlled switch is controlled to be in a connected state with the first charging outlet, and the third end of the first electronically controlled switch is controlled to be in a disconnected state, so that the charging flow path in the first working mode is in a connected state, and phase change heat storage treatment is performed through the phase change material of the entire capacity corresponding to the charging flow path in the first working mode.

[0093] In a feasible implementation, the control unit is configured to: calculate the difference between the preset material phase change temperature and the first preset temperature to obtain a first temperature threshold; calculate the sum of the preset material phase change temperature and the second preset temperature to obtain a second temperature threshold.

[0094] Among them, the preset material phase change temperature refers to the phase change temperature when the phase change material built into the phase change thermal storage module absorbs heat. The first preset temperature can be set based on the actual application environment, and the value range of the first preset temperature can be 3 to 5 degrees Celsius. The second preset temperature can be set based on the actual application environment, and the value range of the second preset temperature can be 3 to 5 degrees Celsius.

[0095] In a feasible implementation, the control unit is configured to: control the charging flow path in the second working mode to be in a connected state through the first electrically-controlled switch and any one of the second electrically-controlled switches; and control the charging flow path in the first working mode to be in a connected state through the first electrically-controlled switch.

[0096] Specifically, based on the actual application scenario, the first end of the first electrically controlled switch can be controlled to be in a connected state or a disconnected state with the water inlet of the heat pump external unit. Based on the actual application scenario, the second end of the first electrically controlled switch can be controlled to be in a connected state or a disconnected state with the first charging outlet. Based on the actual application scenario, the third end of the first electrically controlled switch can be controlled to be in a connected state or a disconnected state with the first end of any second electrically controlled switch. Based on the actual application scenario, the second end of each second electrically controlled switch can be controlled to be in a connected state or a disconnected state with the second charging outlet controlled by each second electrically controlled switch.

[0097] See also Figure 3 , is a schematic diagram of the structure of a HVAC system provided in an embodiment of the present application. Figure 3 As shown, the HVAC system may include a heat pump external unit 100 and a phase change thermal storage module 200, wherein:

[0098] The heat pump external unit 100 includes a control unit 110, a water inlet 122, and a water outlet 124;

[0099] The phase change thermal storage module 200 includes a charging inlet 212, two charging outlets 214, and two third electrically controlled switches 242. The two charging outlets 214 are arranged in sequence along the direction away from the charging inlet 212. The charging outlet farthest from the charging inlet 212 of the two charging outlets 214 is the first charging outlet, and the charging outlet other than the first charging outlet of the two charging outlets 214 is the second charging outlet. Each third electrically controlled switch 242 is used to control a charging outlet 214, and the first end of each third electrically controlled switch 242 is connected to the charging outlet controlled by each third electrically controlled switch, and the second end of each third electrically controlled switch 242 is connected to the water inlet 124, and the water outlet 124 is connected to the charging inlet 212.

[0100] The charging inlet 212 and the first charging outlet constitute the inlet and outlet of the charging flow path in the first working mode, and the charging inlet 212 and the second charging outlet constitute the inlet and outlet of the charging flow path in the second working mode.

[0101] The third electrically-controlled switch may be an automated component for controlling the on-off of a fluid medium. For example, the third electrically-controlled switch may be a solenoid valve or other component.

[0102] Below Figure 3 The working principle of the HVAC system shown is explained:

[0103] Specifically, the control unit is configured to: if the hot water making mode set by the user is the second working mode, control the charging flow path in the second working mode to be in a connected state, perform phase change heat storage processing based on the charging flow path in the second working mode, monitor the water inlet temperature of the heat pump outdoor unit, control the charging flow path in the first working mode to be in a connected state based on the water inlet temperature, and perform phase change heat storage processing based on the charging flow path in the first working mode;

[0104] If the hot water making mode set by the user is the first working mode, the charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage processing is performed based on the charging flow path in the first working mode.

[0105] In a feasible embodiment, the control unit is configured as follows: if the water inlet temperature is greater than or equal to a third temperature threshold, and the third duration is greater than or equal to the third duration threshold, then the charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage treatment is performed based on the charging flow path in the first working mode; wherein the third duration shown is the duration during which the water inlet temperature is greater than or equal to the third temperature threshold.

[0106] In a feasible implementation, the control unit is configured to: control the charging path in the second working mode to be in a connected state through two third electrically-controlled switches; and control the charging path in the first working mode to be in a connected state through two third electrically-controlled switches.

[0107] Specifically, the first charging outlet is controlled to be in a connected state with the first end of the third electrically controlled switch for controlling the first charging outlet, the water inlet of the heat pump external unit is controlled to be in a connected state with the second end of the third electrically controlled switch for controlling the first charging outlet, and the water inlet of the heat pump external unit is controlled to be in a disconnected state with the first end of the third electrically controlled switch for controlling the second charging outlet, so that the charging flow path in the first working mode is in a connected state. The second charging outlet is controlled to be in a connected state with the first end of the third electrically controlled switch for controlling the second charging outlet, the water inlet of the heat pump external unit is controlled to be in a connected state with the second end of the third electrically controlled switch for controlling the second charging outlet, and the water inlet of the heat pump external unit is controlled to be in a disconnected state with the first end of the third electrically controlled switch for controlling the first charging outlet, so that the charging flow path in the second working mode is in a connected state.

[0108] In the HVAC system provided in the embodiment of the present application, the charging flow path of the phase change thermal storage module is configured to have one charging inlet and two charging outlets, so that the charging inlet and the charging outlets at different positions can constitute the charging flow path of the phase change thermal storage module in different working modes. In this way, when the user sets the hot water making mode to the second working mode, since the path length of the charging flow path in the second working mode is shorter than the path length of the charging flow path in the first working mode, the charging flow path in the second working mode is first controlled to be in a connected state, and then the charging flow path in the first working mode is controlled to be in a connected state based on the water inlet temperature of the heat pump outdoor unit. , so that in the early stage of the heat storage process, part of the phase change material corresponding to the charging flow path in the second working mode with a short path length can be fully utilized for heat storage, so that part of the phase change material can quickly store enough heat to release hot water of a certain temperature, thereby improving the heat release rate of the phase change heat storage module in the early stage of heat storage. Subsequently, the charging flow path in the first working mode is connected based on the water inlet temperature control of the heat pump external unit, so that in the middle and / or late stage of the heat storage process, all the phase change materials corresponding to the charging flow path in the first working mode with the longest path length can be fully utilized for heat storage, so as to store more heat and keep the temperature of the hot water stable. Therefore, the embodiment of the present application can not only improve the heat release rate of the phase change heat storage module in the early stage of heat storage, but also keep the temperature of the hot water stable after the hot water releases heat quickly.

[0109] See also Figure 4 , is a flow chart of a heat storage control method provided in an embodiment of the present application. The heat storage control method can be implemented by a computer program and can be run on a heat storage control device based on the von Neumann system. The computer program can be integrated into an application or run as an independent tool application. Specifically, the heat storage control method can be applied to a HVAC system. The structural diagram of the HVAC system can be found in Figure 1 or Figure 2 As shown in the structural diagram, specifically, the HVAC system may include:

[0110] Heat pump outdoor unit;

[0111] And a phase-change thermal storage module, the phase-change thermal storage module has a charging flow path, the charging flow path has a charging inlet and at least two charging outlets, the at least two charging outlets are arranged in sequence and spaced apart in a direction away from the charging inlet, the charging outlet farthest from the charging inlet among the at least two charging outlets is a first charging outlet, and the charging outlet other than the first charging outlet among the at least two charging outlets is a second charging outlet, the charging inlet is connected to the water outlet of the heat pump external unit, the second charging outlet is connected to the water inlet of the heat pump external unit, and the first charging outlet is connected to the water inlet of the heat pump external unit; the phase-change thermal storage module has a first working mode and a second working mode, the charging inlet and the first charging outlet are in a connected state to constitute the inlet and outlet of the charging flow path in the first working mode, and the charging inlet and any one of the second charging outlets constitute the inlet and outlet of the charging flow path in the second working mode;

[0112] Specifically, the heat storage control method of the embodiment of the present application may include the following steps:

[0113] S402, determining whether the hot water making mode set by the user is the second working mode.

[0114] S404, if the hot water making mode set by the user is the second working mode, the charging flow path in the second working mode is controlled to be in a connected state, phase change heat storage treatment is performed based on the charging flow path in the second working mode, the water inlet temperature of the heat pump outdoor unit is monitored, and the charging flow path in the first working mode is controlled to be in a connected state based on the water inlet temperature, and phase change heat storage treatment is performed based on the charging flow path in the first working mode.

[0115] It is understandable that the user can set the hot water making mode to the first working mode or the second working mode through a wired remote control, a wireless remote control, a dial switch or other electronic control.

[0116] Among them, when the phase change heat storage module produces hot water of the same temperature, the heating time consumed by the second working mode is less than the heating time consumed by the first working mode. The second working mode can be understood as a fast hot water mode, and the first working mode can be understood as a conventional hot water mode.

[0117] The water inlet temperature refers to the temperature measured by a temperature sensor installed at the water inlet of the heat pump outdoor unit.

[0118] In some embodiments, a hot water making mode set by a user is obtained. When the hot water making mode is the second working mode, an electric control switch between the charging inlet and the water outlet of the heat pump external unit can be controlled to be in an on state, and an electric control switch between the second charging outlet farthest from the first charging outlet and the water inlet of the heat pump external unit can be controlled to be in an on state, so that the charging flow path in the second working mode formed by the charging inlet and the second charging outlet farthest from the first charging outlet is in a connected state, and phase change heat storage processing is performed based on the charging flow path in the second working mode.

[0119] Furthermore, when it is monitored that the water inlet temperature is greater than or equal to the third temperature threshold, and the second duration is greater than or equal to the second duration threshold, the electric control switch between the charging inlet and the water outlet of the heat pump external unit can be controlled to be in an on state, and the electric control switch between the first charging outlet and the water inlet of the heat pump external unit can be controlled to be in an on state, so that the charging flow path in the first working mode is in a connected state, and phase change heat storage treatment is performed based on the charging flow path in the first working mode. Among them, the third temperature threshold can be set to the sum of the phase change temperature when the phase change material built into the phase change heat storage module absorbs heat and the second preset temperature. The second preset temperature can be set based on the actual application environment, and the value range of the second preset temperature can be 3 to 5 degrees Celsius. Among them, the second duration refers to the duration when the water inlet temperature is greater than or equal to the third temperature threshold.

[0120] When it is monitored that the water inlet temperature is lower than the third temperature threshold, in the scenario where the phase change heat storage module has multiple second charging flow paths under the second working mode, the electric control switch between the charging inlet and the water outlet of the heat pump external unit can be controlled to be in the on state, and the electric control switch between the second charging outlet second far away from the first charging outlet and the water inlet of the heat pump external unit can be controlled to be in the on state in turn, so that the charging flow path under the second working mode formed by the water inlet and the second charging outlet second far away from the first charging outlet is connected in turn, and phase change heat storage treatment is performed on the charging flow path under the second working mode formed by the second charging outlet second far away from the first charging outlet and the water inlet in turn, until it is monitored that the water inlet temperature is greater than or equal to the third temperature threshold, and the second duration is greater than or equal to the second duration threshold, the charging flow path under the first working mode is controlled to be connected, and phase change heat storage treatment is performed on the charging flow path under the first working mode. Among them, the second charging outlet that is second farthest from the first charging outlet includes other second charging outlets except the second charging outlet that is farthest from the first charging outlet. For example, the second charging outlet that is second farthest from the first charging outlet may include the second charging outlet that is second farthest from the first charging outlet, the second charging outlet that is third farthest from the first charging outlet, the second charging outlet that is fourth farthest from the first charging outlet, and so on.

[0121] Alternatively, when it is monitored that the water inlet temperature is lower than the third temperature threshold, in a scenario where the phase change thermal storage module has a second charging flow path in a second operating mode, the phase change thermal storage module has one and only one second charging outlet, and the electrically controlled switch between the charging inlet and the water outlet of the heat pump external unit is kept in an on state, and the electrically controlled switch between the second charging outlet farthest from the first charging outlet and the water inlet of the heat pump external unit is kept in an on state, so that the charging flow path in the second operating mode formed by the first charging outlet and the second charging outlet is in a connected state, and phase change heat storage processing is performed based on the charging flow path in the second operating mode.

[0122] S406: If the hot water making mode set by the user is the first working mode, the charging flow path in the first working mode is controlled to be in a connected state, and a phase change heat storage process is performed based on the charging flow path in the first working mode.

[0123] In some embodiments, a hot water making mode set by a user is obtained. When the hot water making mode is the first working mode, an electric control switch between the charging inlet and the water outlet of the heat pump external unit can be controlled to be in an on state, and an electric control switch between the first charging outlet and the water inlet of the heat pump external unit can be controlled to be in an on state, so that the charging flow path in the first working mode formed by the charging inlet and the first charging outlet is in a connected state, and phase change heat storage processing is performed based on the charging flow path in the second working mode.

[0124] In the heat storage control method provided in the embodiment of the present application, the charging flow path of the phase change thermal storage module is configured to have one charging inlet and at least two charging outlets, so that the charging inlet and the charging outlets at different positions can constitute the charging flow path of the phase change thermal storage module in different working modes. In this way, when the user sets the hot water making mode to the second working mode, since the path length of the charging flow path in the second working mode is shorter than the path length of the charging flow path in the first working mode, the charging flow path in the second working mode is first controlled to be in a connected state, and then the charging flow path in the first working mode is controlled to be in a connected state based on the water inlet temperature of the heat pump outdoor unit. state, so that in the early stage of the heat storage process, part of the phase change material corresponding to the charging flow path in the second working mode with a short path length can be fully utilized for heat storage, so that part of the phase change material can quickly store enough heat to release hot water of a certain temperature, thereby improving the heat release rate of the phase change heat storage module in the early stage of heat storage. Subsequently, the charging flow path in the first working mode is connected based on the water inlet temperature control of the heat pump external unit, so that in the middle and / or late stage of the heat storage process, all the phase change materials corresponding to the charging flow path in the first working mode with the longest path length can be fully utilized for heat storage, so as to store more heat and keep the temperature of the hot water stable. Therefore, the embodiment of the present application can not only improve the heat release rate of the phase change heat storage module in the early stage of heat storage, but also keep the temperature of the hot water stable after the hot water releases heat quickly.

[0125] In a feasible implementation manner, the phase change heat storage module further includes a first electrically controlled switch and at least one second electrically controlled switch, the first end of the first electrically controlled switch is connected to the water inlet of the heat pump external unit, the second end of the first electrically controlled switch is connected to the first charging outlet, the third end of the first electrically controlled switch is connected to the first end of each second electrically controlled switch, and the second end of each second electrically controlled switch is connected to the second charging outlet controlled by each second electrically controlled switch; step S404 may include:

[0126] Controlling the charging flow path in the second working mode to be in a connected state by the first electronically controlled switch and any one of the second electronically controlled switches;

[0127] The charging flow path in the first working mode is controlled to be in a connected state by the first electronically controlled switch.

[0128] Specifically, based on the actual application scenario, the first end of the first electrically controlled switch can be controlled to be in a connected state or a disconnected state with the water inlet of the heat pump external unit. Based on the actual application scenario, the second end of the first electrically controlled switch can be controlled to be in a connected state or a disconnected state with the first charging outlet. Based on the actual application scenario, the third end of the first electrically controlled switch can be controlled to be in a connected state or a disconnected state with the first end of any second electrically controlled switch. Based on the actual application scenario, the second end of each second electrically controlled switch can be controlled to be in a connected state or a disconnected state with the second charging outlet controlled by each second electrically controlled switch.

[0129] In a feasible implementation manner, the charging flow path of the phase change thermal storage module has a charging inlet, a first charging outlet and at least two second charging outlets, the second charging outlet farthest from the first charging outlet among the at least two second charging outlets is the third charging outlet, and the second charging outlet other than the third charging outlet among the at least two second charging outlets is the fourth charging outlet, the charging inlet and the third charging outlet constitute the inlet and outlet of the first charging flow path in the second working mode, and the charging inlet and any fourth charging outlet constitute the inlet and outlet of the second charging flow path in the second working mode; step S402 includes the following operation steps:

[0130] A2: If the hot water making mode set by the user is the second working mode, the first charging flow path in the second working mode is controlled to be in a connected state, phase change heat storage treatment is performed based on the first charging flow path in the second working mode, the water inlet temperature of the heat pump outdoor unit is monitored, and the second charging flow path in the second working mode is controlled to be in a connected state based on the water inlet temperature, and phase change heat storage treatment is performed based on the second charging flow path in turn, and the charging flow path in the first working mode is controlled to be in a connected state based on the water inlet temperature, and phase change heat storage treatment is performed based on the charging flow path in the first working mode;

[0131] Specifically, step A2 includes the following steps:

[0132] a2: if the water inlet temperature is greater than or equal to the first temperature threshold, and the first duration is greater than or equal to the first duration threshold, the third charging flow path is controlled to be in a connected state, and phase change heat storage treatment is performed based on the third charging flow path, and the third charging flow path is the second charging flow path closest to the first charging flow path among the second charging flow paths in the second working mode;

[0133] In step a2, the first temperature threshold is calculated by calculating the difference between the phase change temperature of the preset material and the first preset temperature to obtain the first temperature threshold. The third charging flow path is controlled to be in a connected state, and phase change heat storage treatment is performed based on the third charging flow path. The implementation of this step can be: controlling the first end of the first electric control switch to be in a connected state with the water inlet of the heat pump outdoor unit, controlling the second end of the first electric control switch to be in a disconnected state, controlling the third end of the first electric control switch to be in a disconnected state with the first end of the second electric control switch for controlling the third charging outlet, controlling the third end of the first electric control switch to be in a connected state with the first end for controlling the fourth charging outlet constituting the third charging flow path, and controlling the fourth charging outlet constituting the third charging flow path to be in a connected state with the second end of the second electric control switch for controlling the fourth charging outlet constituting the third charging flow path, so that the third charging flow path is in a connected state, and phase change heat storage treatment is performed through the phase change material corresponding to the third charging flow path.

[0134] a4: monitoring the temperature increase value of the water inlet temperature, if the temperature increase value is the second temperature threshold, and the water inlet temperature after the temperature increase is less than the third temperature threshold, sequentially controlling the second charging flow paths other than the third charging flow path to be in a connected state, and sequentially performing phase change heat storage processing based on the second charging flow paths other than the third charging flow path;

[0135] In step a4, the second temperature threshold is calculated by calculating the sum of the preset material phase change temperature and the second preset temperature to obtain the second temperature threshold.

[0136] The temperature increase value refers to the temperature increase value of the water inlet temperature monitored during each switching of a new charging flow path for phase change heat storage treatment. It can be understood that the third flow path is the newly switched charging flow path. Before the phase change heat storage treatment is performed based on the third charging flow path, the latest value of the monitored water inlet temperature is represented as T1. During the phase change treatment based on the third charging flow path, the latest value of the monitored water inlet temperature is represented as T2. T2 is greater than T1, and the difference between T2 and T1 is the temperature increase value. The water inlet temperature after the temperature increase refers to the latest value of the water inlet temperature when the monitored temperature increase value is the second temperature threshold.

[0137] The specific implementation of step a4 can be: monitor the temperature increase value of the water inlet temperature according to the preset temperature monitoring frequency. Since the number of second charging flow paths in the second working mode is at least one, and the number of second charging flow paths in the second working mode is at least two, the second charging flow path closest to the first charging flow path in the second charging flow path in the second working mode is the third charging flow path. Then, the second charging flow path in the second working mode may include the third charging flow path and at least two second charging flow paths other than the third charging flow path. The at least two second charging flow paths other than the third charging flow path may include the second charging flow path that is second farthest from the first charging flow path, the second charging flow path that is third farthest from the first charging flow path, the third charging flow path that is fourth farthest from the first charging flow path, and so on. In the process of switching to a new charging flow path for phase change heat storage treatment each time, for example, in the process of switching to the third charging flow path for phase change heat storage treatment, when the temperature increase value is monitored to be the second temperature threshold, and the water inlet temperature after the temperature increase is still less than the third temperature threshold, the first end of the first electrically controlled switch can be controlled to be in a connected state with the water inlet of the heat pump outdoor unit, the third end of the first electrically controlled switch and the first end for controlling the fourth charging outlet constituting the third charging flow path can be controlled to be in a disconnected state, the third end of the first electrically controlled switch and the fourth charging outlet for controlling the second charging flow path constituting the second charging flow path away from the first charging flow path can be controlled to be in a connected state, the fourth charging outlet constituting the second charging flow path away from the first charging flow path can be controlled to be in a connected state with the second end of the second electrically controlled switch for controlling the fourth charging outlet constituting the second charging flow path away from the first charging flow path, so that The second energizing flow path far away from the first energizing flow path is in a connected state, and phase change heat storage treatment is performed through the phase change material corresponding to the second energizing flow path far away from the first energizing flow path; by analogy, in the process of switching to the second energizing flow path constituting the second energizing flow path far away from the first energizing flow path for phase change heat storage treatment, when the temperature increase value is monitored to be the second temperature threshold, and the water inlet temperature after the temperature increase is still less than the third temperature threshold, the second energizing flow path far away from the first energizing flow path can be controlled to be in a connected state in the same manner as the above-mentioned control of the second energizing flow path far away from the first energizing flow path to be in a connected state, and phase change heat storage treatment is performed through the phase change heat storage material corresponding to the second energizing flow path far away from the first energizing flow path; by analogy, the subsequent process of switching to the second energizing flow path constituting the fourth energizing flow path far away from the first energizing flow path for phase change heat storage treatment can refer to the above description and will not be described in detail here.

[0138] a6: If the water inlet temperature is greater than or equal to the third temperature threshold, and the second duration is greater than or equal to the second duration threshold, the charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage processing is performed based on the charging flow path in the first working mode;

[0139] The first duration is the duration during which the water inlet temperature is greater than or equal to the first temperature threshold, and the second duration is the duration during which the water inlet temperature is greater than or equal to the third temperature threshold.

[0140] The implementation method of step a6 can be specifically as follows: controlling the first end of the first electronically controlled switch to be in a connected state with the water inlet of the heat pump outdoor unit, controlling the second end of the first electronically controlled switch to be in a connected state with the first charging outlet, and controlling the third end of the first electronically controlled switch to be in a disconnected state, so that the charging flow path in the first working mode is in a connected state, and phase change heat storage treatment is performed through the phase change material of the entire capacity corresponding to the charging flow path in the first working mode.

[0141] In a feasible implementation manner, the charging flow path of the phase change thermal storage module has a charging inlet, a first charging outlet, and a second charging outlet, and step S404 may include the following operation steps:

[0142] If the water inlet temperature is greater than or equal to the third temperature threshold, and the third duration is greater than or equal to the third duration threshold, the charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage processing is performed based on the charging flow path in the first working mode;

[0143] The third duration is the duration during which the water inlet temperature is greater than or equal to the third temperature threshold.

[0144] In a feasible implementation manner, the heat storage control method of the embodiment of the present application can be applied to Figure 3 In the HVAC system shown in the figure, specifically, when the charging flow path of the phase change thermal storage module has one charging inlet and two charging outlets, the phase change thermal storage module includes two third electrically controlled switches, the first end of each third electrically controlled switch is connected to the charging outlet controlled by each third electrically controlled switch, and the second end of each third electrically controlled switch is connected to the water inlet of the heat pump external unit; step S404 may include:

[0145] The charging flow path in the second working mode is controlled to be in a connected state by two third electronically controlled switches;

[0146] The charging flow path in the first working mode is controlled to be in a connected state by two third electronically controlled switches.

[0147] Specifically, the first charging outlet is controlled to be in a connected state with the first end of the third electrically controlled switch for controlling the first charging outlet, the water inlet of the heat pump external unit is controlled to be in a connected state with the second end of the third electrically controlled switch for controlling the first charging outlet, and the water inlet of the heat pump external unit is controlled to be in a disconnected state with the first end of the third electrically controlled switch for controlling the second charging outlet, so that the charging flow path in the first working mode is in a connected state. The second charging outlet is controlled to be in a connected state with the first end of the third electrically controlled switch for controlling the second charging outlet, the water inlet of the heat pump external unit is controlled to be in a connected state with the second end of the third electrically controlled switch for controlling the second charging outlet, and the water inlet of the heat pump external unit is controlled to be in a disconnected state with the first end of the third electrically controlled switch for controlling the first charging outlet, so that the charging flow path in the second working mode is in a connected state.

[0148] The heat storage control method provided in the embodiment of the present application configures the charging flow path of the phase change heat storage module to have one charging inlet and at least two charging outlets, so that the charging inlet and the charging outlets at different positions can constitute the charging flow path of the phase change heat storage module in different working modes. In this way, when the user sets the hot water making mode to the second working mode, since the path length of the charging flow path in the second working mode is shorter than the path length of the charging flow path in the first working mode, the charging flow path in the second working mode is first controlled to be in a connected state, and then the charging flow path in the first working mode is controlled to be in a connected state based on the water inlet temperature of the heat pump outdoor unit. state, so that in the early stage of the heat storage process, part of the phase change material corresponding to the charging flow path in the second working mode with a short path length can be fully utilized for heat storage, so that part of the phase change material can quickly store enough heat to release hot water of a certain temperature, thereby improving the heat release rate of the phase change heat storage module in the early stage of heat storage. Subsequently, the charging flow path in the first working mode is connected based on the water inlet temperature control of the heat pump external unit, so that in the middle and / or late stage of the heat storage process, all the phase change materials corresponding to the charging flow path in the first working mode with the longest path length can be fully utilized for heat storage, so as to store more heat and keep the temperature of the hot water stable. Therefore, the embodiment of the present application can not only improve the heat release rate of the phase change heat storage module in the early stage of heat storage, but also keep the temperature of the hot water stable after the hot water releases heat quickly.

[0149] The following will be combined Figure 5 , the heat storage control device provided in the embodiment of the present application is introduced in detail. It should be noted that, Figure 5 The heat storage control device shown is used to execute the method of one or more embodiments shown in the present application. For the convenience of explanation, only the parts related to the embodiments of the present application are shown. For specific technical details not disclosed, please refer to one or more embodiments shown in the present application.

[0150] See also Figure 5, which shows a schematic diagram of the structure of the heat storage control device of an embodiment of the present application. The heat storage control device 1 can be implemented as all or part of the device through software, hardware or a combination of both. The heat storage control device 1 is applied to a HVAC system, and the HVAC system includes: a heat pump outdoor unit, and the heat pump outdoor unit includes a control unit;

[0151] And a phase-change thermal storage module, the phase-change thermal storage module has a charging flow path, the charging flow path has a charging inlet and at least two charging outlets, the at least two charging outlets are arranged in sequence and spaced apart in a direction away from the charging inlet, the charging outlet farthest from the charging inlet among the at least two charging outlets is a first charging outlet, and the charging outlet other than the first charging outlet among the at least two charging outlets is a second charging outlet, the charging inlet is connected to the water outlet of the heat pump external unit, the second charging outlet is connected to the water inlet of the heat pump external unit, and the first charging outlet is connected to the water inlet of the heat pump external unit; the phase-change thermal storage module has a first working mode and a second working mode, the charging inlet and the first charging outlet constitute the inlet and outlet of the charging flow path in the first working mode, and the charging inlet and any one of the second charging outlets constitute the inlet and outlet of the charging flow path in the second working mode;

[0152] According to some embodiments, the heat storage control device 1 includes a first heat storage control module 11 and a second heat storage control module 12, which are specifically used for:

[0153] The first heat storage control module 11 is used for controlling the charging flow path in the second working mode to be in a connected state if the hot water making mode set by the user is the second working mode, performing phase change heat storage processing based on the charging flow path in the second working mode, monitoring the water inlet temperature of the heat pump outdoor unit, controlling the charging flow path in the first working mode to be in a connected state based on the water inlet temperature, and performing phase change heat storage processing based on the charging flow path in the first working mode;

[0154] The second heat storage control module 12 is used to control the charging flow path in the first working mode to be in a connected state if the hot water making mode set by the user is the first working mode, and perform phase change heat storage processing based on the charging flow path in the first working mode.

[0155] It should be noted that the heat storage control device provided in the above embodiment only uses the division of the above functional modules as an example when executing the heat storage control method. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the heat storage control device provided in the above embodiment and the heat storage control method embodiment belong to the same concept, and the implementation process thereof is detailed in the method embodiment, which will not be repeated here.

[0156] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0157] The present application also provides a computer storage medium, which can store multiple instructions, and the instructions are suitable for being loaded and executed by a processor as described above. Figure 4 The heat storage control method of the embodiment shown in the figure can be found in the specific execution process. Figure 4 The specific description of the illustrated embodiment will not be repeated here.

[0158] The present application also provides a computer program product, which stores at least one instruction, and the at least one instruction is loaded and executed by the processor as described above. Figure 4 The heat storage control method of the embodiment shown in the figure can be found in the specific execution process. Figure 4 The specific description of the illustrated embodiment will not be repeated here.

[0159] Please refer to Figure 6 , is a structural block diagram of an electronic device provided in an embodiment of this specification. The electronic device in this specification may include one or more of the following components: a processor 110, a memory 120, an input device 130, an output device 140, and a bus 150. The processor 110, the memory 120, the input device 130, and the output device 140 may be connected via a bus 150.

[0160] The processor 110 may include one or more processing cores. The processor 110 uses various interfaces and lines to connect various parts of the entire electronic device, and executes various functions and processes data of the electronic device 100 by running or executing instructions, programs, code sets or instruction sets stored in the memory 120, and calling data stored in the memory 120. Optionally, the processor 110 can be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), and programmable logic array (PLA). The processor 110 can integrate one or a combination of a central processing unit (CPU), a graphics processing unit (GPU), and a modem. Among them, the CPU mainly processes the operating system, user interface, and application programs; the GPU is responsible for rendering and drawing display content; and the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor 110, but may be implemented separately through a communication chip.

[0161] The memory 120 may include a random access memory (RAM) or a read-only memory (ROM). Optionally, the memory 120 includes a non-transitory computer-readable storage medium. The memory 120 may be used to store instructions, programs, codes, code sets, or instruction sets.

[0162] The input device 130 is used to receive input commands or data, and includes but is not limited to a keyboard, a mouse, a camera, a microphone or a touch device. The output device 140 is used to output commands or data, and includes but is not limited to a display device and a speaker.

[0163] In addition, those skilled in the art will appreciate that the structure of the electronic device shown in the above drawings does not constitute a limitation on the electronic device, and the electronic device may include more or fewer components than shown, or combine certain components, or arrange the components differently. For example, the electronic device also includes a radio frequency circuit, an input unit, a sensor, an audio circuit, a wireless fidelity (WIFI) module, a power supply, a Bluetooth module and other components, which will not be described in detail here.

[0164] In the embodiment of the present application, the execution subject of each step may be the electronic device described above. Optionally, the execution subject of each step is the operating system of the electronic device. The operating system may be an Android system, an IOS system, or other operating systems, which is not limited in the embodiment of the present application.

[0165] exist Figure 6 In the electronic device, the processor 110 can be used to call the program stored in the memory 120 and execute it to implement the heat storage control method as described in the various method embodiments of the present application.

[0166] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0167] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A HVAC system, characterized in that: The HVAC system includes: A heat pump external unit, the heat pump external unit comprising a control unit; and a phase-change thermal storage module, wherein the phase-change thermal storage module has a charging flow path, the charging flow path has a charging inlet and at least two charging outlets, the at least two charging outlets are sequentially spaced apart in a direction away from the charging inlet, the charging outlet farthest from the charging inlet among the at least two charging outlets is a first charging outlet, and the charging outlets other than the first charging outlet among the at least two charging outlets are second charging outlets, the charging inlet is connected to the water outlet of the heat pump external unit, the second charging outlet is connected to the water inlet of the heat pump external unit, and the first charging outlet is connected to the water inlet of the heat pump external unit; the phase-change thermal storage module has a first working mode and a second working mode, the charging inlet and the first charging outlet constitute the inlet and outlet of the charging flow path in the first working mode, and the charging inlet and any one of the second charging outlets constitute the inlet and outlet of the charging flow path in the second working mode; The control unit is configured as follows: If the hot water making mode set by the user is the second working mode, the charging flow path in the second working mode is controlled to be in a connected state, phase change heat storage treatment is performed based on the charging flow path in the second working mode, the water inlet temperature of the heat pump outdoor unit is monitored, the charging flow path in the first working mode is controlled to be in a connected state based on the water inlet temperature, and phase change heat storage treatment is performed based on the charging flow path in the first working mode; If the hot water making mode set by the user is the first working mode, the charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage processing is performed based on the charging flow path in the first working mode.

2. The HVAC system according to claim 1, characterized in that: The charging flow path has a charging inlet, a first charging outlet and at least two second charging outlets, the second charging outlet farthest from the first charging outlet among the at least two second charging outlets is a third charging outlet, and the second charging outlet other than the third charging outlet among the at least two second charging outlets is a fourth charging outlet, the charging inlet and the third charging outlet constitute the inlet and outlet of the first charging flow path under the second working mode, and the charging inlet and any one of the fourth charging outlets constitute the inlet and outlet of the second charging flow path under the second working mode.

3. The HVAC system according to claim 2, characterized in that: The control unit is configured as follows: If the hot water making mode set by the user is the second working mode, the first charging flow path in the second working mode is controlled to be in a connected state, phase change heat storage treatment is performed based on the first charging flow path in the second working mode, the water inlet temperature of the heat pump outdoor unit is monitored, and the second charging flow path in the second working mode is controlled to be in a connected state in sequence based on the water inlet temperature, phase change heat storage treatment is performed based on the second charging flow path in sequence, the charging flow path in the first working mode is controlled to be in a connected state based on the water inlet temperature, and phase change heat storage treatment is performed based on the charging flow path in the first working mode.

4. The HVAC system according to claim 3, characterized in that: The control unit is configured as follows: If the water inlet temperature is greater than or equal to the first temperature threshold, and the first duration is greater than or equal to the first duration threshold, the third charging flow path is controlled to be in a connected state, and phase change heat storage processing is performed based on the third charging flow path, and the third charging flow path is the second charging flow path closest to the first charging flow path among the second charging flow paths in the second working mode; monitoring the temperature increase value of the water inlet temperature, and if the temperature increase value is a second temperature threshold, and the water inlet temperature after the temperature increase is less than a third temperature threshold, sequentially controlling the second charging flow paths other than the third charging flow path to be in a connected state, and sequentially performing phase change heat storage processing based on the second charging flow paths other than the third charging flow path; If the water inlet temperature is greater than or equal to the third temperature threshold, and the second duration is greater than or equal to the second duration threshold, the charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage processing is performed based on the charging flow path in the first working mode; The first duration is the duration during which the water inlet temperature is greater than or equal to the first temperature threshold, and the second duration is the duration during which the water inlet temperature is greater than or equal to the third temperature threshold.

5. The HVAC system according to claim 4, characterized in that: The control unit is configured as follows: Calculating the difference between the preset material phase change temperature and the first preset temperature to obtain a first temperature threshold; The sum of the preset material phase change temperature and the second preset temperature is calculated to obtain a second temperature threshold.

6. The HVAC system according to claim 1, characterized in that: The charging flow path has a charging inlet, a first charging outlet and a second charging outlet, and the control unit is configured as follows: If the water inlet temperature is greater than or equal to a third temperature threshold, and the third duration is greater than or equal to a third duration threshold, the charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage processing is performed based on the charging flow path in the first working mode; The third duration is the duration during which the water inlet temperature is greater than or equal to the third temperature threshold.

7. The HVAC system according to claim 1, characterized in that: The phase change heat storage module also includes a first electrically controlled switch and at least one second electrically controlled switch, wherein the first end of the first electrically controlled switch is connected to the water inlet of the heat pump external unit, the second end of the first electrically controlled switch is connected to the first charging outlet, the third end of the first electrically controlled switch is connected to the first end of each of the second electrically controlled switches, and the second end of each of the second electrically controlled switches is connected to the second charging outlet controlled by each of the second electrically controlled switches.

8. The HVAC system according to claim 7, characterized in that: The control unit is configured as follows: Controlling the charging flow path in the second working mode to be in a connected state by using the first electronically controlled switch and any one of the second electronically controlled switches; The charging flow path in the first working mode is controlled to be in a connected state by the first electronically controlled switch.

9. The HVAC system according to claim 1, characterized in that: When the charging flow path has one charging inlet and two charging outlets, the phase change thermal storage module includes two third electrically-controlled switches, a first end of each of the third electrically-controlled switches is connected to the charging outlet controlled by each of the third electrically-controlled switches, and a second end of each of the third electrically-controlled switches is connected to the water inlet of the heat pump external unit.

10. The HVAC system according to claim 9, characterized in that: The control unit is configured as follows: Controlling the charging flow path in the second working mode to be in a connected state by the two third electronically controlled switches; The charging flow path in the first working mode is controlled to be in a connected state by the two third electronically controlled switches.

11. A heat storage control method, characterized in that: Applied to a HVAC system, the HVAC system comprising: Heat pump outdoor unit; and a phase-change thermal storage module, wherein the phase-change thermal storage module has a charging flow path, the charging flow path has a charging inlet and at least two charging outlets, the at least two charging outlets are sequentially spaced in a direction away from the charging inlet, the charging outlet farthest from the charging inlet among the at least two charging outlets is a first charging outlet, and the charging outlets other than the first charging outlet among the at least two charging outlets are second charging outlets, the charging inlet is connected to the water outlet of the heat pump external unit, the second charging outlet is connected to the water inlet of the heat pump external unit, and the first charging outlet is connected to the water inlet of the heat pump external unit; the phase-change thermal storage module has a first working mode and a second working mode, the charging inlet and the first charging outlet are in a connected state to constitute the inlet and outlet of the charging flow path in the first working mode, and the charging inlet and any one of the second charging outlets constitute the inlet and outlet of the charging flow path in the second working mode; The method comprises: If the hot water making mode set by the user is the second working mode, the charging flow path in the second working mode is controlled to be in a connected state, phase change heat storage treatment is performed based on the charging flow path in the second working mode, the water inlet temperature of the heat pump outdoor unit is monitored, the charging flow path in the first working mode is controlled to be in a connected state based on the water inlet temperature, and phase change heat storage treatment is performed based on the charging flow path in the first working mode; If the hot water making mode set by the user is the first working mode, the charging flow path in the first working mode is controlled to be in a connected state, and phase change heat storage processing is performed based on the charging flow path in the first working mode.

12. A computer storage medium, characterized in that: The computer storage medium stores a plurality of instructions, which are suitable for being loaded by a processor and executing the method of claim 11 .

13. An electronic device, characterized in that: include: A processor and a memory; wherein the memory stores a computer program, and the computer program is suitable for being loaded by the processor and executing the method according to claim 11.

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