Double-water-tank hot water system, control method and device, electronic equipment and storage medium

Abstract

The invention provides a double-water-tank hot water system, a control method and device, electronic equipment and a storage medium, and the double-water-tank hot water system comprises a heat pump unit, a heating water tank, a heat preservation water tank and a heat preservation circulating pipeline; the heating water tank and the heat preservation water tank are annularly connected through a heat preservation circulating pipeline, and water between the heating water tank and the heat preservation water tank is circulated through the heat preservation circulating pipeline under the condition that the current water temperature of the heat preservation water tank is lower than the first water temperature; the heat pump unit is connected with the heating water tank and used for heating water in the heating water tank under the condition that water between the heating water tank and the heat preservation water tank circulates through the heat preservation circulating pipeline. By means of the heat pump hot water system, the problems that in the related technology, a heat preservation unit needs to be additionally arranged in a double-water-tank heat pump hot water system, unit configuration is wasted, four valves need to be arranged in the double-water-tank system, a heating water tank and a heat preservation water tank are switched, and then valve fault points are caused are solved.

Description

Technical Field

[0001] The present application relates to the technical field of smart home appliances, and in particular to a dual-tank hot water system, a control method and device, an electronic device, and a storage medium. Background Art

[0002] Condensation temperature is an important parameter in the operation of heat pump water heaters, which is directly related to the working efficiency and performance of the unit. In the heat pump unit, the refrigerant evaporates and vaporizes inside the evaporator, absorbs external heat energy, and then increases the temperature through the operation of the compressor. Finally, the refrigerant is converted from a vaporized state to a liquefied state through the condenser. In this process, a large amount of heat is released, which is transferred to the reserve water in the water tank to increase the water temperature and achieve the purpose of hot water production. The level of condensation temperature directly affects the amount of heat released by the unit, which in turn affects the temperature of the water supply. If the condensation temperature is low, it means that the unit is more efficient, because it means that the refrigerant releases more heat during the condensation process, thereby improving the energy efficiency of the unit. In addition, environmental factors such as outdoor meteorological conditions and the heat dissipation effect of the condenser will affect the condensation temperature. For example, when the outdoor temperature is high, the heat exchange of the condenser may decrease, resulting in an increase in the condensation temperature, which will affect the cooling or heating efficiency of the unit. Therefore, the condensation temperature of the heat pump water heater is crucial to ensure the performance of the heat pump water heater.

[0003] Conventional circulating heat pump hot water units use a single water tank heat pump hot water system for heating. However, the single water tank heat pump hot water system cannot achieve energy-saving water replenishment while meeting the user's water demand. In addition, in general, the single water tank system uses a constant temperature water replenishment mode, that is, the water tank temperature is always controlled to operate near the set point, and a small amount of water is replenished each time. The unit has a high condensing temperature and low energy efficiency. In order to overcome the problems of the single water tank heat pump hot water system, there is also a double water tank heat pump hot water system in the related technology. However, the double water tank heat pump hot water system requires an additional insulation unit, which wastes the unit configuration.

[0004] It can be seen from this that the dual-tank heat pump hot water system in the related art has the technical problem of requiring an additional insulation unit, thereby wasting the unit configuration. Summary of the invention

[0005] The present application provides a dual-tank hot water system, a control method and device, an electronic device and a storage medium, so as to at least solve the problem that a dual-tank heat pump hot water system in the related art needs to be additionally configured with a thermal insulation unit, thereby wasting the unit configuration.

[0006] According to one aspect of an embodiment of the present application, a dual-tank hot water system is provided, comprising: a heat pump unit, a heating water tank, an insulation water tank, and an insulation circulation pipeline;

[0007] The heating water tank and the insulation water tank are connected in an annular manner through the insulation circulation pipeline, and are used to circulate the water between the heating water tank and the insulation water tank through the insulation circulation pipeline when the current insulation water temperature of the insulation water tank is lower than the first water temperature;

[0008] The heat pump unit is connected to the heating water tank, and is used to heat the water in the heating water tank when the water between the heating water tank and the insulation water tank is circulated through the insulation circulation pipeline.

[0009] Optionally, the control system as described above further comprises: a water supply pipeline and a water supply valve provided on the water supply pipeline;

[0010] The water replenishment valve is used to open when the water in the heating water tank is less than the first water volume upper limit and the water in the insulation water tank is less than the second water volume lower limit;

[0011] The water outlet end of the water supply pipe is connected to the heating water tank, and is used to guide the water from the water source into the heating water tank when the water supply valve is opened and the water supply pipe is connected to a water source;

[0012] The water replenishment valve is also used to close when the water in the heating water tank is greater than or equal to a first water volume upper limit.

[0013] Optionally, the control system as described above further comprises: a heating circulation pipeline, and a hot water circulation pump provided on the heating circulation pipeline;

[0014] The hot water circulation pump is used to guide the water in the heating water tank to the heat pump unit through the heating circulation pipeline when the current water temperature of the water in the heating water tank is lower than the second water temperature, and to return the water heated by the heat pump unit to the heating water tank through the heating circulation pipeline.

[0015] Optionally, the control system as described above further includes: a first temperature sensing device, a reflux valve and a warm water circulation pump;

[0016] The first temperature sensing device is arranged in the return sub-pipe in the circulation pipe, and is used to detect the current return water temperature of the water in the return sub-pipe, wherein the return sub-pipe is used to return the water in the insulation water tank to the heating water tank;

[0017] The reflux valve is used to open when the current reflux water temperature is lower than or equal to the preset reflux water temperature;

[0018] The warm water circulation pump is used to guide the water in the thermal insulation water tank to the return sub-pipeline when the return valve is opened, so as to keep the water in the return sub-pipeline warm.

[0019] Optionally, the control system as described above further includes: a second temperature sensing device, a third temperature sensing device and a hot water delivery pump;

[0020] The second temperature sensing device is disposed in the heating water tank and is used to detect the current heating water tank water temperature of the water in the heating water tank;

[0021] The third temperature sensing device is arranged in the thermal insulation water tank, and is used to detect the current thermal insulation water tank water temperature of the water in the thermal insulation water tank;

[0022] The reflux valve is also used to open when the current water temperature of the insulation water tank is lower than the first water temperature and the current water temperature of the heating water tank is higher than the preset second water temperature;

[0023] The warm water circulation pump is used to return the water in the thermal insulation water tank to the heating water tank through the return sub-pipeline when the return valve is opened;

[0024] The hot water outlet pump is used to guide the water in the heating water tank to the insulation water tank through the insulation sub-pipeline when the reflux valve is opened, wherein the insulation sub-pipeline is a pipe in the insulation circulation pipe used to guide the water in the heating water tank to the insulation water tank;

[0025] The heat pump unit is used to heat the water in the heating water tank when the warm water circulation pump, the hot water delivery pump and the reflux valve are opened.

[0026] Optionally, the control system as described above further includes: a pressure detection device;

[0027] The pressure detection device is arranged in the return sub-pipeline and is used to detect the pipe network pressure of the return sub-pipeline;

[0028] When it is determined that the pipe network pressure is less than the lower pressure limit, increasing the operating frequency of the warm water circulation pump;

[0029] When it is determined that the pipe network pressure is greater than the first upper pressure limit, reducing the operating frequency of the warm water circulation pump;

[0030] When the operating frequency of the warm water circulation pump is the lowest operating frequency and the pipe network pressure is greater than a second upper pressure limit, shutting down the warm water circulation pump, wherein the second upper pressure limit is greater than the first upper pressure limit;

[0031] When the warm water circulation pump is in a closed state and the pipe network pressure is less than the lower pressure limit, the warm water circulation pump is started at the minimum operating frequency.

[0032] According to another aspect of the embodiment of the present application, a control method for a dual-tank hot water system is also provided, comprising:

[0033] When it is determined that the current water temperature of the insulation water tank is lower than the first water temperature, controlling the water between the heating water tank and the insulation water tank to circulate through the insulation circulation pipe;

[0034] The heat pump unit is controlled to heat the water in the heating water tank.

[0035] Optionally, the control method as described above further includes:

[0036] When it is determined that the water in the heating water tank is less than the first water volume upper limit and the water in the heat preservation water tank is less than the second water volume lower limit, the water supply valve is opened to guide the water from the water source connected to the water supply valve into the heating water tank;

[0037] When the water in the heating water tank is greater than or equal to the first water volume upper limit, the water replenishment valve is closed.

[0038] Optionally, the control method as described above further includes:

[0039] When the current heating water tank water temperature of the water in the heating water tank is lower than the second water temperature, the hot water circulation pump is controlled to operate so as to guide the water in the heating water tank to the heat pump unit through the heating circulation pipe, and return the water heated by the heat pump unit to the heating water tank through the heating circulation pipe.

[0040] Optionally, the control method as described above further includes:

[0041] Detecting the current return water temperature of the water in the return sub-pipe, wherein the return sub-pipe is used to return the water in the insulation water tank to the heating water tank;

[0042] When it is determined that the current return water temperature is lower than or equal to the preset return water temperature, the water in the insulation water tank is directed to the return sub-pipe by controlling the operation of the warm water circulation pump to insulate the water in the return sub-pipe.

[0043] Optionally, the control method as described above further includes:

[0044] Detecting the current heating water tank water temperature of the water in the heating water tank;

[0045] Detecting the current water temperature of the water in the thermal insulation water tank;

[0046] When the current water temperature of the thermal insulation water tank is lower than the first water temperature and the current water temperature of the heating water tank is higher than the preset second water temperature, the water in the thermal insulation water tank is refluxed to the heating water tank through the reflux sub-pipeline;

[0047] Controlling the operation of the hot water delivery pump to divert the water in the heating water tank to the insulation water tank;

[0048] The heat pump unit is controlled to heat the water in the heating water tank.

[0049] Optionally, the control method as described above further includes:

[0050] Detecting the pipe network pressure of the reflux sub-pipeline;

[0051] When it is determined that the pipe network pressure is less than the lower pressure limit, increasing the operating frequency of the warm water circulation pump;

[0052] When it is determined that the pipe network pressure is greater than the first upper pressure limit, reducing the operating frequency of the warm water circulation pump;

[0053] When the operating frequency of the warm water circulation pump is the lowest operating frequency and the pipe network pressure is greater than a second upper pressure limit, shutting down the warm water circulation pump, wherein the second upper pressure limit is greater than the first upper pressure limit;

[0054] When the warm water circulation pump is in a closed state and the pipe network pressure is less than the lower pressure limit, the warm water circulation pump is started at the minimum operating frequency.

[0055] According to another aspect of the embodiment of the present application, a control device for a dual-tank hot water system is provided, comprising:

[0056] a water circulation control module, for controlling the water between the heating water tank and the insulation water tank to circulate through the insulation circulation pipe when it is determined that the current insulation water tank water temperature of the insulation water tank is lower than the first water temperature;

[0057] The heating control module is used to control the heat pump unit to heat the water in the heating water tank.

[0058] According to another aspect of the embodiments of the present application, there is also provided an electronic device, including a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; wherein the memory is used to store a computer program; and the processor is used to execute the method steps in any of the above embodiments by running the computer program stored in the memory.

[0059] According to another aspect of the embodiments of the present application, a computer-readable storage medium is provided, in which a computer program is stored, wherein the computer program is configured to execute the method steps in any of the above embodiments when executed.

[0060] In the embodiment of the present application, a double water tank is set up, which includes: a heat pump unit, a heating water tank, an insulated water tank and an insulated circulation pipe; the heating water tank and the insulated water tank are ring-connected by the insulated circulation pipe, and are used for circulating the water between the heating water tank and the insulated water tank through the insulated circulation pipe when the current insulated water temperature of the insulated water tank is lower than the first water temperature; the heat pump unit is connected to the heating water tank, and is used for heating the water in the heating water tank when the water between the heating water tank and the insulated water tank is circulated through the insulated circulation pipe. Since the heat pump unit can heat the water in the heating water tank when the water between the heating water tank and the insulated water tank is circulated through the insulated circulation pipe, the water in the heating water tank can be heated by the heat pump unit, and then the heated water in the heating water tank enters the insulated water tank again. Since the water temperature of the heating water tank is generally higher than the water temperature of the insulated water tank, the water entering the insulated water tank from the heating water tank can increase the water temperature of the insulated water tank, thereby achieving the purpose of insulating the water in the insulated water tank, achieving the technical effect that the heat pump unit can achieve heating and insulation at the same time, and there is no need to set up heat pumps for the heating water tank and the insulated water tank respectively, thereby solving the problem in the related technology that the double-tank heat pump hot water system needs to be additionally configured with an insulation unit, thereby wasting the unit configuration, and the double-tank system needs to be configured with four valves to switch the heating water tank and the insulated water tank, thereby causing valve failure points. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0062] In order to more clearly illustrate the embodiments of the present application 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, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0063] Figure 1 is a schematic structural diagram of an optional double-tank hot water system according to an embodiment of the present application;

[0064] Figure 2 is a schematic diagram of a hardware environment of an optional control method for a dual-tank hot water system according to an embodiment of the present application;

[0065] Figure 3 is a flow chart of an optional control method of a dual-tank hot water system according to an embodiment of the present application;

[0066] Figure 4 is a structural block diagram of an optional control device for a dual-tank hot water system according to an embodiment of the present application;

[0067] Figure 5 It is a structural block diagram of an optional electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0068] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution 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 ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0069] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0070] like Figure 1 As shown, according to one aspect of an embodiment of the present application, a dual-tank hot water system is provided, comprising: a heat pump unit 1, a heating water tank 2, an insulation water tank 3 and an insulation circulation pipeline;

[0071] The heating water tank 2 and the insulation water tank 3 are connected in an annular manner through an insulation circulation pipe, and are used to circulate the water between the heating water tank 2 and the insulation water tank 3 through the insulation circulation pipe when the current insulation water temperature of the insulation water tank 3 is lower than the first water temperature;

[0072] The heat pump unit 1 is connected to the heating water tank 2 and is used to heat the water in the heating water tank 2 when the water between the heating water tank 2 and the insulation water tank 3 is circulated through the insulation circulation pipe.

[0073] Optionally, the heating water tank 2 can be a water tank directly connected to the heat pump unit 1, used to directly obtain the heat supply of the heat pump unit 1, and the heating water tank 2 is connected to the insulation water tank 3 through an insulation circulation pipe, so that the water in the heating water tank 2 can enter the insulation water tank 3, and the water in the insulation water tank 3 can also enter the heating water tank 2, so that the water between the heating water tank 2 and the insulation water tank 3 can be circulated, and generally the water temperature of the heating water tank 2 is higher than the water temperature of the insulation water tank 3, and then, when the current insulation water tank water temperature of the insulation water tank 3 is lower than the first water temperature, the water temperature of the insulation water tank can be increased by circulating water between the heating water tank 2 and the insulation water tank 3. The first water temperature can be the lower limit of the water temperature of the insulation water tank 3 (for example, N°C lower than the preset water temperature of the insulation water tank, N can be 5, 6, etc., and the specific value can be selected according to the actual scenario), and the first water temperature is lower than the water temperature of the heating water tank 2.

[0074] A heat pump unit is a device that efficiently utilizes energy. It transfers heat from a low-temperature heat source to a high-temperature heat sink through a reverse thermodynamic cycle, thereby achieving the function of heating or cooling. Heat pump units are widely used in residential, commercial buildings, industrial processes and other fields. The heat pump unit 1 is connected to the heating water tank 2, so that the heat pump unit 1 can heat the water from the heating water tank 2, and then return the heated water to the heating water tank 2, thereby achieving the purpose of heating the water in the heating water tank 2.

[0075] Furthermore, an electric auxiliary heating device may be provided between the heat pump unit 1 and the heating water tank 2 to further heat the water returned from the heat pump unit 1 to the heating water tank 2 .

[0076] When the water between the heating water tank 2 and the insulated water tank 3 of the heat pump unit 1 circulates through the insulated circulation pipe, the water in the heating water tank 2 flows into the water with lower temperature in the insulated water tank 3. Therefore, the water in the heating water tank 2 is cooled down, while the water in the insulated water tank 3 is heated up. Furthermore, in this case, the water in the heating water tank 2 is heated by the heat pump unit 1 so that the water in the heating water tank 3 is kept within its target temperature range.

[0077] By using the equipment of this embodiment, it is possible to heat the water in the heating water tank through the heat pump unit, and then the heated water in the heating water tank enters the insulation water tank again. Since the water temperature of the heating water tank is generally higher than the water temperature of the insulation water tank, the water entering the insulation water tank from the heating water tank can increase the water temperature of the insulation water tank, thereby achieving the purpose of insulating the water in the insulation water tank, achieving the technical effect that the heat pump unit can achieve heating and insulation at the same time, and there is no need to set up heat pumps for the heating water tank and the insulation water tank respectively, thereby solving the problem in the related technology that the double-tank heat pump hot water system needs to be additionally configured with an insulation unit, thereby wasting the unit configuration, and the double-tank system needs to be configured with four valves to switch the heating water tank and the insulation water tank, thereby causing the problem of valve failure points.

[0078] As an optional implementation, the control system described above further includes: a water supply pipeline and a water supply valve F1 provided on the water supply pipeline;

[0079] The water supply valve F1 is used to open when the water in the heating water tank 2 is less than the first water volume upper limit and the water in the insulation water tank 3 is less than the second water volume lower limit;

[0080] The water outlet end of the water supply pipe is connected to the heating water tank 2, and is used to guide the water from the water source into the heating water tank 2 when the water supply valve F1 is opened and the water supply pipe is connected to the water source;

[0081] The water replenishment valve F1 is also used to close when the water in the heating water tank 2 is greater than or equal to the first water amount upper limit.

[0082] The water supply pipe may be a pipe for introducing water from a water source into the heating water tank 2 . Furthermore, by providing a water supply valve F1 on the water supply pipe, the addition of water to the heating water tank 2 may be controlled.

[0083] The first water volume upper limit may be an upper limit value of the water volume in the heating water tank 2 .

[0084] The second lower limit of the water volume may be a preset water volume of the thermal insulation water tank 3, for example, a water volume that can meet the water supply requirements for a preset time.

[0085] When the water in the insulated water tank 3 is less than the second water volume lower limit, it means that the water in the insulated water tank 3 is insufficient and hot water needs to be introduced from the heating water tank 2. Therefore, the water volume in the heating water tank 2 will gradually decrease within a foreseeable range. Therefore, when the water in the heating water tank 2 is less than the first water volume upper limit and the water in the insulated water tank 3 is less than the second water volume lower limit, the water replenishment valve F1 is opened to introduce water from the water source into the heating water tank 2. In addition, the water replenishment valve F1 is also used to close when the water in the heating water tank 2 is more than or equal to the first water volume upper limit to prevent the water in the heating water tank 2 from overflowing.

[0086] As an optional implementation, the control system as described above further includes: a heating circulation pipeline, and a hot water circulation pump B-1 arranged on the heating circulation pipeline;

[0087] The hot water circulation pump B-1 is used to guide the water in the heating water tank 2 to the heat pump unit 1 through the heating circulation pipe when the current heating water temperature of the water in the heating water tank 2 is lower than the second water temperature, and to return the water heated by the heat pump unit 1 to the heating water tank 2 through the heating circulation pipe.

[0088] Specifically, the heating circulation pipeline is a pipeline used to connect the heating water tank 2 and the heat pump unit 1, and the heating circulation pipeline may include a pipeline used to guide the water in the heating water tank 2 to the heat pump unit 1, and a pipeline for returning the water heated by the heat pump unit 1 to the heating water tank 2.

[0089] A hot water circulation pump B-1 is provided on the heating circulation pipeline to provide water flow power through the hot water circulation pump B-1 so that water can circulate between the heat pump unit 1, the heating circulation pipeline and the heating water tank 2.

[0090] The second water temperature may be the lower limit of the water temperature of the preset water temperature range of the heating water tank 2. For example, when the preset water temperature range of the heating water tank 2 is [T 1设 -5℃, T 1设 +5℃], the second water temperature is T 1设 -5℃. When the current water temperature of the water in the heating water tank 2 is lower than the second water temperature, the hot water circulation pump B-1 guides the water in the heating water tank 2 to the heat pump unit 1 through the heating circulation pipeline, and returns the water heated by the heat pump unit 1 to the heating water tank 2 through the heating circulation pipeline. For example, when the current water temperature of the water in the heating water tank 2 is lower than T 1设 -5℃, the hot water circulation pump B-1 guides the water in the heating water tank 2 to the heat pump unit 1 through the heating circulation pipe, and returns the water heated by the heat pump unit 1 to the heating water tank 2 through the heating circulation pipe. Further, when the heat pump unit 1 and the hot water circulation pump B-1 are in operation, if the current heating water tank water temperature of the water in the heating water tank 2 is higher than or equal to the upper limit of the water temperature of the preset water temperature range of the heating water tank 2, the heat pump unit 1 and the hot water circulation pump B-1 are turned off.

[0091] Optionally, a first water volume lower limit may be pre-set. When the water in the heating water tank 2 is less than the first water volume lower limit, the heat pump unit 1 and the hot water circulation pump B-1 will not start, thereby preventing dry burning.

[0092] As an optional implementation, the control system as described above further includes: a first temperature sensing device 4, a return valve F2 and a warm water circulation pump B-3;

[0093] The first temperature sensing device 4 is arranged in the reflux sub-pipe in the circulation pipe, and is used to detect the current reflux water temperature of the water in the reflux sub-pipe, wherein the reflux sub-pipe is used to return the water in the insulation water tank 3 to the heating water tank 2;

[0094] The reflux valve F2 is used to open when the current reflux water temperature is lower than or equal to the preset reflux water temperature;

[0095] The warm water circulation pump B-3 is used to guide the water in the thermal insulation water tank 3 to the return sub-pipe when the return valve F2 is opened, so as to keep the water in the return sub-pipe warm.

[0096] Specifically, the first temperature sensing device 4 may be a temperature sensing package provided in the return sub-pipe in the circulation pipeline, for detecting the current return water temperature of the water in the return sub-pipe. The return valve F2 may be a solenoid valve provided in the return sub-pipe to control whether the water in the insulation water tank 3 can enter the return sub-pipe and the heating water tank 2.

[0097] The preset return water temperature may be a pre-set temperature at which the return sub-pipeline may be at a risk of freezing. For example, when the outdoor temperature is less than or equal to 4°C, the preset return water temperature may be 10°C, 8°C, etc. Moreover, in general, the water temperature in the insulated water tank 3 is higher than the preset return water temperature. Thus, when it is determined that the current return water temperature is lower than or equal to the preset return water temperature, the return valve F2 and the warm water circulation pump B-3 may be opened simultaneously to divert the water in the insulated water tank 3 to the return sub-pipeline to insulate the water in the return sub-pipeline and avoid freezing of the return sub-pipeline and other situations that affect the normal operation of the system.

[0098] As an optional implementation, the aforementioned control system further includes: a second temperature sensing device 5, a third temperature sensing device 6 and a hot water delivery pump B-2;

[0099] The second temperature sensing device 5 is provided in the heating water tank 2 and is used to detect the current water temperature of the heating water tank 2;

[0100] The third temperature sensing device 6 is provided in the thermal insulation water tank 3 and is used to detect the current thermal insulation water tank water temperature of the water in the thermal insulation water tank 3;

[0101] The reflux valve F2 is also used to open when the current water temperature of the insulation water tank is lower than the first water temperature and the current water temperature of the heating water tank is higher than the preset second water temperature;

[0102] The warm water circulation pump B-3 is used to return the water in the insulation water tank 3 to the heating water tank 2 through the return sub-pipe when the return valve F2 is opened;

[0103] The hot water delivery pump B-2 is used to guide the water in the heating water tank 2 to the insulation water tank 3 through the insulation sub-pipeline when the return valve F2 is opened, wherein the insulation sub-pipeline is a pipe in the insulation circulation pipe used to guide the water in the heating water tank 2 to the insulation water tank 3;

[0104] The heat pump unit 1 is used to heat the water in the heating water tank 2 when the warm water circulation pump B-3, the hot water delivery pump B-2 and the return valve F2 are turned on.

[0105] Specifically, the second temperature sensing device 5 can be a temperature sensing package provided in the heating water tank 2, for detecting the current heating water tank water temperature of the water in the heating water tank 2. The third temperature sensing device 6 is a temperature sensing package provided in the insulation water tank 3, for detecting the current insulation water tank water temperature of the water in the insulation water tank 3.

[0106] When it is determined that the current water temperature of the insulated water tank is lower than the first water temperature and the current water temperature of the heating water tank is higher than the preset second water temperature, the reflux valve F2 and the hot water export pump B-3 are opened to return the water in the insulated water tank 3 to the heating water tank 2 through the reflux sub-pipe, and then the hot water export pump B-2 is also turned on to guide the water in the heating water tank 2 to the insulated water tank 3 through the insulation sub-pipe, so that the hot water between the insulated water tank 3 and the heating water tank 2 can be exchanged. After this situation occurs, the heating condition for the heating water tank 2 is also triggered at this time, and then the heat pump unit 1 is turned on to heat the water in the heating water tank 2. Furthermore, when the latest insulated water tank water temperature of the insulated water tank 3 is raised to the set temperature T2, the warm water circulation pump B-3 and the reflux valve F2 are closed, but the hot water export pump B-2 is allowed to continue to run until the water in the heating water tank 2 reaches the lowest liquid level (i.e., the first water volume lower limit) or the water in the insulated water tank 2 reaches the highest liquid level.

[0107] As an optional implementation, the control system as described above further includes: a pressure detection device 7;

[0108] The pressure detection device 7 is arranged in the return sub-pipeline and is used to detect the pipe network pressure of the return sub-pipeline;

[0109] When it is determined that the pipe network pressure is less than the lower pressure limit, increase the operating frequency of the warm water circulation pump B-3;

[0110] When it is determined that the pipe network pressure is greater than the first upper pressure limit, the operating frequency of the warm water circulation pump B-3 is reduced;

[0111] When the operating frequency of the warm water circulation pump B-3 is the lowest operating frequency and the pipe network pressure is greater than the second upper pressure limit, the warm water circulation pump B-3 is turned off, wherein the second upper pressure limit is greater than the first upper pressure limit;

[0112] When the warm water circulation pump B-3 is in the closed state and the pipe network pressure is less than the lower pressure limit, the warm water circulation pump B-3 is started at the lowest operating frequency.

[0113] Specifically, the pressure detection device 7 can be a pressure sensor disposed in the aforementioned return sub-pipeline for detecting the pipe network pressure in the return sub-pipeline caused by the operation of the warm water circulation pump B-3.

[0114] The pressure detection device 7 can detect the pipe network pressure in real time. When the pipe network pressure is less than the lower pressure limit, the operation frequency of the warm water circulation pump B-3 can be increased. The lower pressure limit can be the lower limit of the preset pressure value range of the return sub-pipeline. For example, when the preset pressure value range is [P 设 -50KPa, P 设 +50KPa], the lower limit of pressure is P 设 -50KPa, where P 设 It is the optimal pressure value. When it is determined that the pipe network pressure is less than the lower pressure limit, the operating frequency of the warm water circulation pump B-3 can be increased to increase the water flow within a reasonable pipe network pressure.

[0115] The first upper pressure limit may be the upper limit of a preset pressure value range of the reflux sub-pipeline. For example, when the preset pressure value range is [P 设 -50KPa, P 设 +50KPa], the upper limit of pressure is P 设 +50KPa, when it is determined that the network pressure is greater than the upper pressure limit, the operating frequency of the warm water circulation pump B-3 can be reduced to avoid excessive network pressure caused by too high operating frequency, which may cause damage to the return sub-pipeline.

[0116] When the operating frequency of the warm water circulation pump B-3 is the lowest operating frequency (for example, 35HZ) and the pipe network pressure is greater than the second upper pressure limit, the warm water circulation pump B-3 is turned off. The second upper pressure limit may be the maximum tolerable pressure of the return sub-pipeline. If the return sub-pipeline is subjected to the second upper pressure limit for a long time, it is very likely to be damaged. Therefore, by turning off the warm water circulation pump B-3 in this case, the normal operation of the pipe network can be effectively guaranteed. 设 When the pressure is the optimal value, the second upper pressure limit may be greater than P 设 The pressure value, such as P 设 +150KPa.

[0117] When the warm water circulation pump B-3 is in the closed state and the pipe network pressure is less than the lower pressure limit, the warm water circulation pump B-3 is started at the lowest operating frequency.

[0118] The user side is between the warm water circulation pump B-3 and the reflux valve F2. A water outlet for providing warm water to the user is provided between the warm water circulation pump B-3 and the reflux valve F2. Furthermore, through the device of this embodiment, a stable water pressure can be provided to the user and the operation of the reflux sub-pipeline can be guaranteed.

[0119] According to another aspect of the embodiment of the present application, a dual water tank hot water system method is provided. As an optional implementation, in this embodiment, the dual water tank hot water system method can be applied to Figure 2 In the hardware environment composed of terminal 1402 and server 1404 shown in FIG. Figure 2 As shown, server 1404 is connected to terminal 1402 via a network, and can be used to provide services (such as game services, application services, etc.) for the terminal or a client installed on the terminal. A database can be set up on the server or independently of the server to provide data storage services for server 1404.

[0120] The above network may include but is not limited to at least one of the following: wired network, wireless network. The above wired network may include but is not limited to at least one of the following: wide area network, metropolitan area network, local area network, and the above wireless network may include but is not limited to at least one of the following: WIFI (Wireless Fidelity), Bluetooth. The terminal may not be limited to a PC, a mobile phone, a tablet computer, etc.

[0121] The control method of the dual-tank hot water system of the embodiment of the present application can be executed by a server, a terminal, or a server and a terminal together. The terminal can also execute the control method of the dual-tank hot water system of the embodiment of the present application by a client installed thereon.

[0122] Taking the control method of the dual-tank hot water system in this embodiment executed by the terminal as an example, Figure 3 A control method for a dual-tank hot water system provided in an embodiment of the present application includes the following steps:

[0123] Step S302, when it is determined that the current water temperature of the insulation water tank is lower than the first water temperature, controlling the water between the heating water tank and the insulation water tank to circulate through the insulation circulation pipe;

[0124] Step S304, controlling the heat pump unit to heat the water in the heating water tank.

[0125] Specifically, the heating water tank can be a water tank directly connected to the heat pump unit, which is used to directly obtain the heat supply of the heat pump unit, and the heating water tank is connected to the insulation water tank through an insulation circulation pipe, so that the water in the heating water tank can enter the insulation water tank, and the water in the insulation water tank can also enter the heating water tank, so that the water between the heating water tank and the insulation water tank can be circulated, and generally the water temperature of the heating water tank is higher than the water temperature of the insulation water tank, and then, when the current insulation water tank water temperature of the insulation water tank is lower than the first water temperature, the water temperature of the insulation water tank can be increased by circulating water between the heating water tank and the insulation water tank. The first water temperature can be the lower limit of the water temperature of the insulation water tank (for example, N°C lower than the preset water temperature of the insulation water tank, N can be 5, 6, etc., and the specific value can be selected according to the actual scenario), and the first water temperature is lower than the water temperature of the heating water tank.

[0126] The heat pump unit is a device that efficiently utilizes energy. It transfers heat from a low-temperature heat source to a high-temperature heat sink through a reverse thermodynamic cycle, thereby achieving the function of heating or cooling. The heat pump unit is widely used in residential, commercial buildings, industrial processes and other fields. The heat pump unit is connected to a heating water tank, so that the heat pump unit can heat the water from the heating water tank, and then return the heated water to the heating water tank, thereby achieving the purpose of heating the water in the heating water tank.

[0127] Furthermore, an electric auxiliary heating device may be provided between the heat pump unit and the heating water tank to further heat the water returned from the heat pump unit to the heating water tank.

[0128] When the water between the heating water tank and the insulated water tank of the heat pump unit circulates through the insulated circulation pipe, the water in the heating water tank flows into the water with lower temperature in the insulated water tank. Therefore, the water in the heating water tank is cooled down, while the water in the insulated water tank is heated up. Furthermore, in this case, the water in the heating water tank is heated by the heat pump unit to keep the water in the heating water tank within its target temperature range.

[0129] Through the method of this embodiment, it is possible to heat the water in the heating water tank by controlling the heat pump unit, and then the heated water in the heating water tank enters the insulation water tank again. Since the water temperature of the heating water tank is generally higher than the water temperature of the insulation water tank, the water entering the insulation water tank from the heating water tank can increase the water temperature of the insulation water tank, thereby achieving the purpose of insulating the water in the insulation water tank, achieving the technical effect that the heat pump unit can achieve heating and insulation at the same time, and there is no need to set up heat pumps for the heating water tank and the insulation water tank respectively, thereby solving the problem in the related technology that the double-tank heat pump hot water system needs to be additionally configured with an insulation unit, thereby wasting the unit configuration, and the double-tank system needs to be configured with four valves to switch the heating water tank and the insulation water tank, thereby causing the problem of valve failure points.

[0130] As an optional implementation, the control method as described above further includes the following steps:

[0131] When it is determined that the water in the heating water tank is less than the first water volume upper limit and the water in the insulation water tank is less than the second water volume lower limit, the water supply valve is opened to guide the water from the water source connected to the water supply valve into the heating water tank;

[0132] When the water in the heating water tank is greater than or equal to the first water volume upper limit, the water replenishment valve is closed.

[0133] The water from the water source may be introduced into the heating water tank through a water supply pipe. In addition, a water supply valve may be provided on the water supply pipe to control the addition or stop of water to the heating water tank.

[0134] The first water volume upper limit may be an upper limit value of the water volume in the heating water tank.

[0135] The second water volume lower limit may be a preset water volume of the thermal insulation water tank, for example, a water volume that can meet the water supply requirements for a preset time.

[0136] When the water in the insulation water tank is less than the second water volume lower limit, it means that the water in the insulation water tank is insufficient and hot water needs to be introduced from the heating water tank. Therefore, the water volume in the heating water tank will gradually decrease within a foreseeable range. Therefore, when the water in the heating water tank is less than the first water volume upper limit and the water in the insulation water tank is less than the second water volume lower limit, the water supply valve is opened to introduce water from the water source into the heating water tank. In addition, the water supply valve is also used to close when the water in the heating water tank is more than or equal to the first water volume upper limit to prevent the water in the heating water tank from overflowing.

[0137] As an optional implementation, the control method as described above further includes the following steps:

[0138] When the current water temperature of the water in the heating water tank is lower than the second water temperature, the hot water circulation pump is controlled to operate so as to guide the water in the heating water tank to the heat pump unit through the heating circulation pipe, and return the water heated by the heat pump unit to the heating water tank through the heating circulation pipe.

[0139] Specifically, the heating circulation pipeline is a pipeline used to connect the heating water tank and the heat pump unit, and the heating circulation pipeline may include a pipeline used to guide the water in the heating water tank to the heat pump unit, and a pipeline for returning the water heated by the heat pump unit to the heating water tank.

[0140] A hot water circulation pump is provided on the heating circulation pipeline to provide water flow power so that water can circulate between the heat pump unit, the heating circulation pipeline and the heating water tank.

[0141] The second water temperature may be the lower limit of the water temperature of the preset water temperature range of the heating water tank. For example, when the preset water temperature range of the heating water tank is [T 1设 -5℃, T 1设 +5℃], the second water temperature is T 1设 -5℃. When the current water temperature of the water in the heating water tank is lower than the second water temperature, the hot water circulation pump guides the water in the heating water tank to the heat pump unit through the heating circulation pipeline, and returns the water heated by the heat pump unit to the heating water tank through the heating circulation pipeline. 1设 When the temperature is -5℃, the hot water circulation pump guides the water in the heating water tank to the heat pump unit through the heating circulation pipe, and returns the water heated by the heat pump unit to the heating water tank through the heating circulation pipe. Further, when the heat pump unit and the hot water circulation pump are in operation, if the current water temperature of the heating water tank is higher than or equal to the upper limit of the water temperature of the preset water temperature range of the heating water tank, the heat pump unit 1 and the hot water circulation pump are turned off.

[0142] Optionally, a first water volume lower limit may be pre-set. When the water in the heating water tank is less than the first water volume lower limit, the heat pump unit and the hot water circulation pump will not start, thereby preventing dry burning.

[0143] As an optional implementation, the control method as described above further includes the following steps:

[0144] Detecting the current return water temperature of the water in the return sub-pipe, wherein the return sub-pipe is used to return the water in the insulation water tank to the heating water tank;

[0145] When it is determined that the current return water temperature is lower than or equal to the preset return water temperature, the water in the insulation water tank is diverted to the return sub-pipe by controlling the operation of the warm water circulation pump to insulate the water in the return sub-pipe.

[0146] Specifically, the current return water temperature of the water in the return sub-pipeline can be detected by a temperature sensing package in the return sub-pipeline in the circulation pipeline. The solenoid valve in the return sub-pipeline can be controlled to control whether the water in the insulation water tank can enter the return sub-pipeline and the heating water tank.

[0147] The preset return water temperature may be a pre-set temperature at which the return sub-pipeline may be at a risk of freezing. For example, when the outdoor temperature is less than or equal to 4°C, the preset return water temperature may be 10°C, 8°C, etc. Moreover, in general, the water temperature in the insulated water tank is higher than the preset return water temperature. Thus, when it is determined that the current return water temperature is lower than or equal to the preset return water temperature, the return valve and the warm water circulation pump may be opened simultaneously to divert the water in the insulated water tank to the return sub-pipeline to insulate the water in the return sub-pipeline and avoid freezing of the return sub-pipeline and other situations that may affect the normal operation of the system.

[0148] As an optional implementation, the control method as described above further includes the following steps:

[0149] Detecting the current water temperature of the heating water tank;

[0150] Detecting the current water temperature of the water in the thermal insulation tank;

[0151] When the current water temperature of the thermal insulation water tank is lower than the first water temperature and the current water temperature of the heating water tank is higher than the preset second water temperature, the water in the thermal insulation water tank is returned to the heating water tank through the return sub-pipeline;

[0152] Control the operation of the hot water export pump to divert the water in the heating water tank to the insulation water tank;

[0153] Control the heat pump unit to heat the water in the heating water tank.

[0154] Specifically, the current water temperature of the water in the heating water tank can be detected by a temperature sensing package arranged in the heating water tank. The current water temperature of the water in the insulation water tank can be detected by a temperature sensing package arranged in the insulation water tank.

[0155] When it is determined that the current water temperature of the insulated water tank is lower than the first water temperature and the current water temperature of the heating water tank is higher than the preset second water temperature, the reflux valve (i.e., the solenoid valve arranged in the reflux sub-pipe) and the hot water export pump are opened to return the water in the insulated water tank to the heating water tank through the reflux sub-pipe, and then the hot water export pump is also turned on to guide the water in the heating water tank to the insulated water tank through the insulated sub-pipe, so as to exchange hot water between the insulated water tank and the heating water tank. After this situation occurs, the heating condition of the heating water tank is also triggered at this time, and then the heat pump unit is turned on to heat the water in the heating water tank. Furthermore, when the latest insulated water tank water temperature of the insulated water tank is raised to the set temperature, the warm water circulation pump and the reflux valve are closed, but the hot water export pump is allowed to continue to run until the water in the heating water tank reaches the lowest liquid level (i.e., the first water volume lower limit) or the water in the insulated water tank reaches the highest liquid level.

[0156] As an optional implementation, the control method as described above further includes the following steps:

[0157] Detect the network pressure of the return pipe;

[0158] When it is determined that the pipe network pressure is less than the lower pressure limit, increase the operating frequency of the warm water circulation pump;

[0159] When it is determined that the pipe network pressure is greater than the first upper pressure limit, the operating frequency of the warm water circulation pump is reduced;

[0160] When the operating frequency of the warm water circulation pump is the lowest operating frequency and the pipe network pressure is greater than the second upper pressure limit, shutting down the warm water circulation pump, wherein the second upper pressure limit is greater than the first upper pressure limit;

[0161] When the warm water circulation pump is in the off state and the pipe network pressure is less than the lower pressure limit, start the warm water circulation pump at the lowest operating frequency.

[0162] Specifically, the pipe network pressure in the return sub-pipeline caused by the operation of the warm water circulation pump can be detected by a pressure detection device disposed in the aforementioned return sub-pipeline.

[0163] The pressure detection device can detect the pipe network pressure in real time. When the pipe network pressure is less than the lower pressure limit, the operation frequency of the warm water circulation pump can be increased. The lower pressure limit can be the lower limit of the preset pressure value range of the return sub-pipeline. For example, when the preset pressure value range is [P 设 -50KPa, P 设 +50KPa], the lower limit of pressure is P 设 -50KPa, where P 设 It is the optimal pressure value. When it is determined that the pipe network pressure is less than the lower pressure limit, the operating frequency of the warm water circulation pump can be increased to increase the water flow within a reasonable pipe network pressure.

[0164] The first upper pressure limit may be the upper limit of a preset pressure value range of the reflux sub-pipeline. For example, when the preset pressure value range is [P 设 -50KPa, P 设 +50KPa], the upper limit of pressure is P 设 +50KPa. When it is determined that the network pressure is greater than the upper pressure limit, the operating frequency of the warm water circulation pump can be reduced to avoid excessive network pressure caused by excessive operating frequency, which may cause damage to the return sub-pipeline.

[0165] When the operating frequency of the warm water circulation pump is the lowest operating frequency (for example, 35HZ) and the pipe network pressure is greater than the second upper pressure limit, the warm water circulation pump is turned off. The second upper pressure limit may be the maximum tolerable pressure of the return sub-pipeline. If the return sub-pipeline is subjected to the second upper pressure limit for a long time, it is very likely to be damaged. Therefore, by turning off the warm water circulation pump in this case, the normal operation of the pipe network can be effectively guaranteed. 设 When the pressure is the optimal value, the second upper pressure limit may be greater than P 设 The pressure value, such as P 设 +150KPa.

[0166] When the warm water circulation pump is in the off state and the pipe network pressure is less than the lower pressure limit, start the warm water circulation pump at the lowest operating frequency.

[0167] The user side is between the warm water circulation pump and the reflux valve, and a water outlet for providing warm water to the user is provided between the warm water circulation pump and the reflux valve. Furthermore, through the device of this embodiment, a stable water pressure can be provided to the user and the operation of the reflux sub-pipeline can be guaranteed.

[0168] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0169] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM (Read-Only Memory) / RAM (Random Access Memory), a magnetic disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods of each embodiment of the present application.

[0170] According to another aspect of the embodiments of the present application, a control device for a dual-tank hot water system for implementing the control method of the dual-tank hot water system is also provided. Figure 4is a structural block diagram of an optional control device for a dual-tank hot water system according to an embodiment of the present application, such as Figure 4 As shown, the device may include:

[0171] The water circulation control module 41 is used to control the water between the heating water tank and the insulation water tank to circulate through the insulation circulation pipe when it is determined that the current insulation water tank water temperature of the insulation water tank is lower than the first water temperature;

[0172] The heating control module 42 is used to control the heat pump unit to heat the water in the heating water tank.

[0173] It should be noted that the water circulation control module 41 in this embodiment can be used to execute the above step S302, and the heating control module 42 in this embodiment can be used to execute the above step S304.

[0174] Through the above module, it is possible to heat the water in the heating water tank by controlling the heat pump unit, and then the heated water in the heating water tank enters the insulation water tank again. Since the water temperature of the heating water tank is generally higher than the water temperature of the insulation water tank, the water entering the insulation water tank from the heating water tank can increase the water temperature of the insulation water tank, thereby achieving the purpose of insulating the water in the insulation water tank, achieving the technical effect that the heat pump unit can achieve heating and insulation at the same time, and there is no need to set up heat pumps for the heating water tank and the insulation water tank respectively, thereby solving the problem in the related technology that the double-tank heat pump hot water system needs to be additionally configured with an insulation unit, thereby wasting the unit configuration, and the double-tank system needs to be configured with four valves to switch the heating water tank and the insulation water tank, thereby causing the problem of valve failure points.

[0175] The device in this embodiment, in addition to the above modules, may also include a module for executing any method in any of the above-mentioned embodiments of the control method for a double-tank hot water system.

[0176] It should be noted that the examples and application scenarios implemented by the above modules and corresponding steps are the same, but are not limited to the contents disclosed in the above embodiments. It should be noted that the above modules as part of the device can be run in Figure 2 In the hardware environment shown, it can be implemented by software or by hardware, wherein the hardware environment includes a network environment.

[0177] According to another aspect of the embodiment of the present application, an electronic device for implementing the control method of the dual-tank hot water system is also provided. The electronic device may be a server, a terminal, or a combination thereof.

[0178] According to another embodiment of the present application, there is also provided an electronic device, including: Figure 5As shown, the electronic device may include: a processor 1501 , a communication interface 1502 , a memory 1503 and a communication bus 1504 , wherein the processor 1501 , the communication interface 1502 , and the memory 1503 communicate with each other via the communication bus 1504 .

[0179] Memory 1503, used for storing computer programs;

[0180] The processor 1501 is used to implement the following steps when executing the program stored in the memory 1503:

[0181] Step S302, when it is determined that the current water temperature of the insulated water tank is lower than the first water temperature, the water between the heating water tank and the insulated water tank is controlled to circulate through the insulated circulation pipe.

[0182] Step S304, controlling the heat pump unit to heat the water in the heating water tank.

[0183] Optionally, in this embodiment, the above-mentioned communication bus can be a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus, etc. The communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus. The communication interface is used for communication between the above-mentioned electronic device and other devices.

[0184] The memory may include a random access memory (RAM) or a non-volatile memory (NVM), such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

[0185] As an example, the memory 1503 may include, but is not limited to, the water circulation control module 41 and the heating control module 42 in the control device of the dual-tank hot water system. In addition, it may also include, but is not limited to, other module units in the control device of the dual-tank hot water system, which will not be described in detail in this example.

[0186] The above-mentioned processor can be a general-purpose processor, which can include but not be limited to: CPU (Central Processing Unit), NP (Network Processor), etc.; it can also be DSP (Digital Signal Processor), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0187] An embodiment of the present application further provides a computer-readable storage medium, the storage medium including a stored program, wherein the method steps of the above method embodiment are executed when the program is run.

[0188] Optionally, in this embodiment, the storage medium may include but is not limited to: a U disk, a ROM, a RAM, a mobile hard disk, a magnetic disk or an optical disk, and other media that can store program codes.

[0189] 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.

[0190] If the integrated units in the above embodiments are implemented in the form of software functional units and sold or used as independent products, they can be stored in the above computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling one or more computer devices (which may be personal computers, servers, or network devices, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.

[0191] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0192] In the several embodiments provided in the present application, it should be understood that the disclosed client can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0193] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution provided in this embodiment.

[0194] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0195] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A dual-tank hot water system, characterized in that: include: Heat pump unit, heating water tank, insulation water tank and insulation circulation pipeline; The heating water tank and the insulation water tank are connected in an annular manner through the insulation circulation pipeline, and are used to circulate the water between the heating water tank and the insulation water tank through the insulation circulation pipeline when the current insulation water temperature of the insulation water tank is lower than the first water temperature; The heat pump unit is connected to the heating water tank, and is used to heat the water in the heating water tank when the water between the heating water tank and the insulation water tank is circulated through the insulation circulation pipeline.

2. The system according to claim 1, characterized in that Also includes: A water supply pipeline and a water supply valve arranged on the water supply pipeline; The water replenishment valve is used to open when the water in the heating water tank is less than the first water volume upper limit and the water in the insulation water tank is less than the second water volume lower limit; The water outlet end of the water supply pipe is connected to the heating water tank, and is used to guide the water from the water source into the heating water tank when the water supply valve is opened and the water supply pipe is connected to a water source; The water replenishment valve is also used to close when the water in the heating water tank is greater than or equal to a first water volume upper limit.

3. The system according to claim 1, characterized in that Also includes: A heating circulation pipeline, and a hot water circulation pump arranged on the heating circulation pipeline; The hot water circulation pump is used to guide the water in the heating water tank to the heat pump unit through the heating circulation pipeline when the current water temperature of the water in the heating water tank is lower than the second water temperature, and to return the water heated by the heat pump unit to the heating water tank through the heating circulation pipeline.

4. The system according to claim 1, characterized in that Also includes: First temperature sensing equipment, reflux valve and warm water circulation pump; The first temperature sensing device is arranged in the return sub-pipe in the circulation pipe, and is used to detect the current return water temperature of the water in the return sub-pipe, wherein the return sub-pipe is used to return the water in the insulation water tank to the heating water tank; The reflux valve is used to open when the current reflux water temperature is lower than or equal to the preset reflux water temperature; The warm water circulation pump is used to guide the water in the thermal insulation water tank to the return sub-pipeline when the return valve is opened, so as to keep the water in the return sub-pipeline warm.

5. The system according to claim 4, characterized in that Also includes: A second temperature sensing device, a third temperature sensing device and a hot water delivery pump; The second temperature sensing device is disposed in the heating water tank and is used to detect the current heating water tank water temperature of the water in the heating water tank; The third temperature sensing device is arranged in the thermal insulation water tank, and is used to detect the current thermal insulation water tank water temperature of the water in the thermal insulation water tank; The reflux valve is also used to open when the current water temperature of the insulation water tank is lower than the first water temperature and the current water temperature of the heating water tank is higher than the preset second water temperature; The warm water circulation pump is used to return the water in the thermal insulation water tank to the heating water tank through the return sub-pipeline when the return valve is opened; The hot water outlet pump is used to guide the water in the heating water tank to the insulation water tank through the insulation sub-pipeline when the reflux valve is opened, wherein the insulation sub-pipeline is a pipe in the insulation circulation pipe used to guide the water in the heating water tank to the insulation water tank; The heat pump unit is used to heat the water in the heating water tank when the warm water circulation pump, the hot water delivery pump and the reflux valve are opened.

6. The system according to claim 4, characterized in that Also includes: Pressure testing equipment; The pressure detection device is arranged in the return sub-pipeline and is used to detect the pipe network pressure of the return sub-pipeline; When it is determined that the pipe network pressure is less than the lower pressure limit, increasing the operating frequency of the warm water circulation pump; When it is determined that the pipe network pressure is greater than the first upper pressure limit, reducing the operating frequency of the warm water circulation pump; When the operating frequency of the warm water circulation pump is the lowest operating frequency and the pipe network pressure is greater than a second upper pressure limit, shutting down the warm water circulation pump, wherein the second upper pressure limit is greater than the first upper pressure limit; When the warm water circulation pump is in a closed state and the pipe network pressure is less than the lower pressure limit, the warm water circulation pump is started at the minimum operating frequency.

7. A control method for a dual-tank hot water system, characterized in that: include: When it is determined that the current water temperature of the insulation water tank is lower than the first water temperature, controlling the water between the heating water tank and the insulation water tank to circulate through the insulation circulation pipe; The heat pump unit is controlled to heat the water in the heating water tank.

8. The control method according to claim 7, characterized in that: Also includes: When it is determined that the water in the heating water tank is less than the first water volume upper limit and the water in the heat preservation water tank is less than the second water volume lower limit, the water supply valve is opened to guide the water from the water source connected to the water supply valve into the heating water tank; When the water in the heating water tank is greater than or equal to the first water volume upper limit, the water replenishment valve is closed.

9. The control method according to claim 7, characterized in that: Also includes: When the current heating water tank water temperature of the water in the heating water tank is lower than the second water temperature, the hot water circulation pump is controlled to operate so as to guide the water in the heating water tank to the heat pump unit through the heating circulation pipe, and return the water heated by the heat pump unit to the heating water tank through the heating circulation pipe.

10. The control method according to claim 7, characterized in that: Also includes: Detecting the current return water temperature of the water in the return sub-pipe, wherein the return sub-pipe is used to return the water in the insulation water tank to the heating water tank; When it is determined that the current return water temperature is lower than or equal to the preset return water temperature, the water in the insulation water tank is directed to the return sub-pipe by controlling the operation of the warm water circulation pump to insulate the water in the return sub-pipe.

11. The control method according to claim 10, characterized in that: Also includes: Detecting the current heating water tank water temperature of the water in the heating water tank; Detecting the current water temperature of the water in the thermal insulation water tank; When the current water temperature of the thermal insulation water tank is lower than the first water temperature and the current water temperature of the heating water tank is higher than the preset second water temperature, the water in the thermal insulation water tank is refluxed to the heating water tank through the reflux sub-pipeline; Controlling the operation of the hot water delivery pump to divert the water in the heating water tank to the insulation water tank; The heat pump unit is controlled to heat the water in the heating water tank.

12. The control method according to claim 10, characterized in that: Also includes: Detecting the pipe network pressure of the reflux sub-pipeline; When it is determined that the pipe network pressure is less than the lower pressure limit, increasing the operating frequency of the warm water circulation pump; When it is determined that the pipe network pressure is greater than the first upper pressure limit, reducing the operating frequency of the warm water circulation pump; When the operating frequency of the warm water circulation pump is the lowest operating frequency and the pipe network pressure is greater than a second upper pressure limit, shutting down the warm water circulation pump, wherein the second upper pressure limit is greater than the first upper pressure limit; When the warm water circulation pump is in a closed state and the pipe network pressure is less than the lower pressure limit, the warm water circulation pump is started at the minimum operating frequency.

13. A control device for a dual-tank hot water system, characterized in that: include: a water circulation control module, for controlling the water between the heating water tank and the insulation water tank to circulate through the insulation circulation pipe when it is determined that the current insulation water tank water temperature of the insulation water tank is lower than the first water temperature; The heating control module is used to control the heat pump unit to heat the water in the heating water tank.

14. An electronic device comprising a processor, a communication interface, a memory and a communication bus, wherein: The processor, the communication interface and the memory communicate with each other via the communication bus, wherein: The memory is used to store computer programs; The processor is configured to execute the method according to any one of claims 7 to 12 by running the computer program stored in the memory.

15. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, wherein the computer program is configured to execute the method according to any one of claims 7 to 12 when executed.

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