Control method and device of hot water system, hot water system and storage medium

Abstract

The invention relates to a control method and device of a hot water system, the hot water system and a storage medium, and the hot water system comprises a heat pump unit, renewable heat collection equipment, a pipeline control assembly, a first power part and a heat preservation water tank. The heat pump unit and an inlet of the renewable heat collection device are connected with the first end of the heat preservation water tank through the pipeline control assembly and the first power piece, and an outlet of the heat pump unit and an outlet of the renewable heat collection device are both connected with the second end of the heat preservation water tank. According to the first temperature and the second temperature, a target control strategy corresponding to the hot water system is determined, and the target control strategy is used for indicating the renewable heat collection equipment or the heat pump unit to heat the heat preservation water tank; and based on the target control strategy, the pipeline control assembly and the first power part are controlled, so that the heat preservation water tank is heated under the action of the first power part. Energy waste is avoided, and energy consumption of the hot water system is reduced.

Description

Technical Field

[0001] This application relates to the field of air source heat pump technology, and in particular to a control method, device, hot water system and storage medium for a hot water system. Background Technology

[0002] To address the high energy consumption issue caused by the single-tank structure of air source heat pump water heating systems, current systems typically employ a dual-tank structure, consisting of a heating tank and an insulated tank. The heating tank is usually connected to the heat pump unit and solar energy in the system, with the heat pump unit acting as the primary heat source and solar energy serving as an auxiliary heat source. When the insulated tank requires heat, the heat pump unit or solar energy typically provides heat to the heating tank indirectly, thus heating the insulated tank indirectly. However, this approach results in a low heating rate for the insulated tank and prevents the direct use of abundant solar energy for heating, leading to energy waste. Summary of the Invention

[0003] This application provides a control method, device, hot water system, and storage medium for a hot water system to solve the problems of low heating efficiency and energy waste in the heating of insulated water tanks in existing hot water systems.

[0004] In a first aspect, this application provides a control method for a hot water system, the hot water system including a heat pump unit, a renewable heat collection device, a pipeline control component, a first power component, and an insulated water tank. The inlets of the heat pump unit and the renewable heat collection device are connected to a first end of the insulated water tank through the pipeline control component and the first power component, and the outlets of the heat pump unit and the renewable heat collection device are both connected to a second end of the insulated water tank. The method includes: Obtain the first temperature of the insulated water tank and the second temperature of the renewable heat collection device; Based on the first temperature and the second temperature, a target control strategy corresponding to the hot water system is determined. The target control strategy is used to instruct the use of the renewable heat collection equipment or the heat pump unit to heat the insulated water tank. Based on the target control strategy, the pipeline control component and the first power component are controlled to heat the insulated water tank under the action of the first power component.

[0005] In an optional implementation, determining the target control strategy corresponding to the hot water system based on the first temperature and the second temperature includes: determining that the target control strategy corresponding to the hot water system is a first control strategy when the first temperature is less than a set temperature of the heat preservation water tank and the second temperature is greater than a sum between the first temperature and a target temperature threshold; controlling the pipeline control assembly and the first power member based on the target control strategy, so as to heat the heat preservation water tank under the action of the first power member, including: controlling the pipeline control assembly and the first power member when the target control strategy is the first control strategy, so that the renewable heat collecting device is in communication with the heat preservation water tank, and the heat preservation water tank is heated by the renewable heat collecting device under the action of the first power member.

[0006] In an optional embodiment, the method further includes: acquiring a third temperature of the heat preservation water tank when a time length that the renewable heat collecting device takes to heat the heat preservation water tank reaches a first time length threshold during the process that the renewable heat collecting device heats the heat preservation water tank; determining a first temperature difference between the third temperature and the first temperature; determining a temperature change rate of the heat preservation water tank within the first time length threshold based on the first temperature difference and the first time length threshold; controlling the pipeline control assembly and the first power member when the temperature change rate is less than a preset change rate threshold and the third temperature is less than the set temperature, so that the heat pump unit is in communication with the heat preservation water tank, and the heat preservation water tank is heated by the heat pump unit under the action of the first power member.

[0007] In an optional embodiment, the method further includes: acquiring an actual flow of the first power member during the process that the renewable heat collecting device heats the heat preservation water tank; determining a theoretical heating amount of the renewable heat collecting device within a second time length threshold based on the first temperature, the second temperature, the actual flow and the second time length threshold; acquiring a fourth temperature of the heat preservation water tank and an actual water amount of the heat preservation water tank when a time length that the renewable heat collecting device takes to heat the heat preservation water tank reaches the second time length threshold; determining an actual heating amount of the renewable heat collecting device within the second time length threshold based on the first temperature, the fourth temperature and the actual water amount; determining an actual heating rate of the renewable heat collecting device within the second time length threshold based on the theoretical heating amount and the actual heating amount; When the actual heating rate is less than the preset heating rate threshold and the fourth temperature is less than the set temperature, the pipeline control assembly and the first power member are controlled so that the heat pump unit is communicated with the heat preservation water tank to heat the heat preservation water tank by the heat pump unit under the action of the first power member.

[0008] In an optional embodiment, the target temperature threshold is determined by: obtaining a preset temperature threshold, an actual environment temperature of an outdoor environment where the hot water system is located, and an actual season; determining a temperature correction value corresponding to the preset temperature threshold based on the actual environment temperature and the actual season; correcting the preset temperature threshold by using the temperature correction value to obtain the target temperature threshold.

[0009] In an optional embodiment, the determining the target control strategy corresponding to the hot water system according to the first temperature and the second temperature comprises: when the first temperature is less than the set temperature and the second temperature is less than or equal to a sum of the first temperature and the target temperature threshold, determining that the target control strategy corresponding to the hot water system is a second control strategy; the controlling the pipeline control assembly and the first power member based on the target control strategy to heat the heat preservation water tank under the action of the first power member comprises: when the target control strategy is the second control strategy, controlling the pipeline control assembly and the first power member so that the heat pump unit is communicated with the heat preservation water tank to heat the heat preservation water tank by the heat pump unit under the action of the first power member.

[0010] In an optional embodiment, the pipeline control assembly comprises a first pipeline control member and a second pipeline control member, an inlet of the renewable heat collecting device is connected with a first end of the heat preservation water tank through the first pipeline control member and the first power member, and an inlet of the heat pump unit is connected with the first end of the heat preservation water tank through the second pipeline control member and the first power member; the controlling the pipeline control assembly and the first power member based on the target control strategy to heat the heat preservation water tank under the action of the first power member comprises: when the target control strategy is used to instruct the heat preservation water tank to be heated by the renewable heat collecting device, the first pipeline control member is controlled to be opened and the first power member is controlled to work so that the heat preservation water tank is heated by the renewable heat collecting device under the action of the first power member. when the target control strategy is used to instruct to heat the heat preservation water tank by the heat pump unit, the second pipeline control component is controlled to be opened and the first power component is controlled to work, so that the heat pump unit heats the heat preservation water tank under the action of the first power component.

[0011] In a second aspect, the present application provides a control device of a hot water system, the hot water system comprising a heat pump unit, a renewable heat collecting device, a pipeline control assembly, a first power component and a heat preservation water tank, an inlet of the heat pump unit and the renewable heat collecting device being connected with a first end of the heat preservation water tank through the pipeline control assembly and the first power component, an outlet of the heat pump unit and the renewable heat collecting device being connected with a second end of the heat preservation water tank, the device comprising: a obtaining module, configured to obtain a first temperature of the heat preservation water tank and a second temperature of the renewable heat collecting device; a determining module, configured to determine a target control strategy corresponding to the hot water system according to the first temperature and the second temperature, the target control strategy being used to instruct to heat the heat preservation water tank by the renewable heat collecting device or the heat pump unit; a control module, configured to control the pipeline control assembly and the first power component based on the target control strategy, so as to heat the heat preservation water tank under the action of the first power component.

[0012] In a third aspect, the present application provides a hot water system, comprising: a heat pump unit, a renewable heat collecting device, a pipeline control assembly, a first power component, a heat preservation water tank, a processor and a memory, an inlet of the heat pump unit and the renewable heat collecting device being connected with a first end of the heat preservation water tank through the pipeline control assembly and the first power component, an outlet of the heat pump unit and the renewable heat collecting device being connected with a second end of the heat preservation water tank; The processor is configured to execute a control program of the hot water system stored in the memory, so as to implement the control method of the hot water system.

[0013] In a fourth aspect, the present application provides a storage medium, the storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the control method of the hot water system.

[0014] Compared with the prior art, the technical scheme provided by the embodiment of the present application has the following advantages: the control method of the hot water system provided by the embodiment of the present application is applied to the hot water system, the hot water system comprises a heat pump unit, a renewable heat collecting device, a pipeline control assembly, a first power member and a heat preservation water tank, the inlet of the heat pump unit and the renewable heat collecting device is connected with the first end of the heat preservation water tank through the pipeline control assembly and the first power member, and the outlet of the heat pump unit and the renewable heat collecting device is connected with the second end of the heat preservation water tank, the method comprises the following steps: obtaining a first temperature of the heat preservation water tank and a second temperature of the renewable heat collecting device; determining a target control strategy corresponding to the hot water system according to the first temperature and the second temperature, the target control strategy is used for instructing the heat preservation water tank to be heated by the renewable heat collecting device or the heat pump unit; and controlling the pipeline control assembly and the first power member based on the target control strategy, so as to realize the heating of the heat preservation water tank under the action of the first power member. In the above manner, the pipeline control assembly and the first power member are arranged to construct the heating circuit in which the heat pump unit and the renewable heat collecting device heat the heat preservation water tank respectively, so that the temperature of the heat preservation water tank and the temperature of the renewable heat collecting device are obtained during the working process of the hot water system, the heating mode of the heat preservation water tank is determined according to the obtained temperatures, the pipeline control assembly and the first power member are controlled based on the determined heating mode, the heating circuit in which the heat pump unit or the renewable heat collecting device is located is made to work, and the direct heating of the heat preservation water tank by the heat pump unit or the renewable heat collecting device is realized, which not only improves the heating efficiency of the heat preservation water tank, but also directly uses the sufficient renewable energy of the renewable heat collecting device to realize the direct heating of the heat preservation water tank, avoids the waste of energy and reduces the energy consumption of the hot water system. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application.

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows, and obviously, other drawings can also be obtained by those skilled in the art without any creative effort on the premise of not paying any creative effort.

[0017] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings, and the exemplarily illustrations do not constitute a limitation on the embodiments, and the elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified, and the drawings do not constitute a proportional limitation.

[0018] Figure 1 A structural schematic diagram of a hot water system provided by the embodiment of the present application is shown in the figure. Figure 2 A schematic flowchart illustrating a control method for a hot water system provided in an embodiment of this application; Figure 3 A schematic flowchart illustrating another control method for a hot water system provided in an embodiment of this application; Figure 4 A flowchart illustrating another control method for a hot water system provided in an embodiment of this application; Figure 5 A schematic diagram of the structure of a control device for a hot water system provided in an embodiment of this application; Figure 6 This is a schematic diagram of another hot water system provided in an embodiment of this application. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0021] refer to Figure 1 , Figure 1 This is a schematic diagram of a hot water system provided in an embodiment of this application. The hot water system provided in this embodiment includes: a renewable heat collection device 1, a heat pump unit 4, a pipeline control assembly, a first power component 3, a second power component 10, an insulated water tank 2, and a heating water tank 9.

[0022] The heat pump unit 4 is a main unit in the hot water system, which is used to absorb heat from air by consuming a small amount of electric energy to generate hot water. The renewable heat collecting device 1 is used to convert renewable energy into heat energy, which can be a solar energy device or a geothermal energy heat collecting device, etc. The pipeline control assembly is used to control the opening and closing of the pipeline. The first power member 3 is used to provide power to extract water from the heat preservation water tank 2, which is a circulating pump. The second power member 10 is used to provide power to extract water from the heating water tank 9. The heat preservation water tank 2 is used to store warm water. The heating water tank 9 is used to store hot water.

[0023] Specifically, the inlet of the heat pump unit 4 and the renewable heat collecting device 1 is connected with the first end of the heat preservation water tank 2 through the pipeline control assembly and the first power member 3, and the outlet of the heat pump unit 4 and the renewable heat collecting device 1 is connected with the second end of the heat preservation water tank 2. By controlling the pipeline control assembly and the first power member 3, the heat pump unit 4 and the heat preservation water tank 2 can form a heat preservation loop to heat the heat preservation water tank 2 by the heat pump unit 4, and the renewable heat collecting device 1 and the heat preservation water tank 2 can form a heat preservation loop to heat the heat preservation water tank 2 by the renewable heat collecting device 1. The heat preservation water tank 2 also has a third end, which is connected with the user side end to provide warm water for the user side end.

[0024] The inlet of the heat pump unit 4 and the renewable heat collecting device 1 is also connected with the first end of the heating water tank 9 through the pipeline control assembly and the second power member 10, and the outlet of the heat pump unit 4 and the renewable heat collecting device 1 is also connected with the second end of the heating water tank 9. By controlling the pipeline control assembly and the second power member 10, the heat pump unit 4 and the heating water tank 9 can form a heating loop to heat the heating water tank 9 by the heat pump unit 4, and the renewable heat collecting device 1 and the heating water tank 9 can form a heat preservation loop to heat the heating water tank 9 by the renewable heat collecting device 1.

[0025] More specifically, the pipeline control assembly includes a first pipeline control member 6 and a second pipeline control member 5. The inlet of the renewable heat collecting device 1 is connected with the first end of the heat preservation water tank 2 through the first pipeline control member 6 and the first power member 3, and is also connected with the first end of the heating water tank 9 through the first pipeline control member 6 and the second power member 10. The inlet of the heat pump unit 4 is connected with the first end of the heat preservation water tank 2 through the second pipeline control member 5 and the first power member 3, and is also connected with the first end of the heating water tank 9 through the second pipeline control member 5 and the second power member 10. The first pipeline control member 6 and the second pipeline control member 5 are both solenoid valves.

[0026] In the above, by controlling the first pipeline control member 6 to open and the first power member 3 to work, the renewable heat collecting device 1 and the heat preservation water tank 2 can form a heat preservation loop, so that the renewable heat collecting device 1 can heat the heat preservation water tank 2 through the heat preservation loop; by controlling the second pipeline control member 5 to open and the first power member 3 to work, the heat pump set 4 and the heat preservation water tank 2 can form a heat preservation loop, so that the heat pump set 4 can heat the heat preservation water tank 2 through the heat preservation loop; by controlling the first pipeline control member 6 to open and the second power member 10 to work, the renewable heat collecting device 1 and the heating water tank 9 can form a heat preservation loop, so that the renewable heat collecting device 1 can heat the heating water tank 9 through the heat preservation loop; by controlling the second pipeline control member 5 to open and the second power member 10 to work, the heat pump set 4 and the heating water tank 9 can form a heating loop, so that the heat pump set 4 can heat the heating water tank 9 through the heating loop.

[0027] The hot water system provided by the embodiment further comprises a third pipeline control member 7 and a fourth pipeline control member 8. The third pipeline control member 7 is arranged on the connecting pipeline between the outlet of the heat pump set 4 and the renewable heat collecting device 1 and the heating water tank 9, and the fourth pipeline control member 8 is arranged on the connecting pipeline between the outlet of the heat pump set 4 and the renewable heat collecting device 1 and the heat preservation water tank 2. When the heat pump set 4 or the renewable heat collecting device 1 is controlled to heat the heating water tank 9, the third pipeline control member 7 needs to be controlled to open. When the heat pump set 4 or the renewable heat collecting device 1 is controlled to heat the heat preservation water tank 2, the fourth pipeline control member 8 needs to be controlled to open. Similarly, the third pipeline control member 7 and the fourth pipeline control member 8 are both electromagnetic valves.

[0028] It should be noted that the heating method of the heating water tank 9 can refer to the prior art, which will not be described here. The heating method of the heat preservation water tank 2 will be described in detail below. In addition, the valve arranged on the connecting pipeline between the heating water tank 9 and the heat preservation water tank 2 is a normally closed valve. The valve arranged on the connecting pipeline between the first end of the heating water tank 9 and the heat preservation water tank 2 is also a normally closed valve.

[0029] Reference Figure 2 , Figure 2 A flowchart of a control method of a hot water system provided by the embodiment is shown. The control method of the hot water system provided by the embodiment comprises the following steps: S201: obtaining a first temperature of a heat preservation water tank and a second temperature of a renewable heat collecting device.

[0030] S202: determining a target control strategy corresponding to the hot water system according to the first temperature and the second temperature.

[0031] S203: Control the pipeline control component and the first power piece based on the target control strategy, so as to heat the heat preservation water tank under the action of the first power piece.

[0032] For the above S201 to S203 steps, the target control strategy is used to indicate that the heat preservation water tank is heated by the renewable heat collecting device or the heat pump unit. The first temperature is actually the temperature inside the heat preservation water tank. A temperature sensor can be arranged inside the heat preservation water tank to obtain the first temperature of the heat preservation water tank through the temperature sensor inside the heat preservation water tank. The first temperature directly reflects the heat state of the heat preservation water tank. The second temperature is actually the surface temperature of the renewable heat collecting device. A temperature sensor can be arranged on the surface of the renewable heat collecting device to obtain the second temperature of the renewable heat collecting device through the temperature sensor on the surface of the renewable heat collecting device. The second temperature directly reflects the actual ability of solar energy as a heat source under the current meteorological condition.

[0033] After obtaining the first temperature and the second temperature, the obtained first temperature and second temperature can be logically operated and judged based on the control algorithm built in the hot water system, to determine whether the renewable heat collecting device or the heat pump unit needs to be used to heat the heat preservation water tank. When it is determined that the renewable heat collecting device needs to be used to heat the heat preservation water tank, the current target control strategy is determined as the first control strategy. When it is determined that the renewable heat collecting device needs to be used to heat the heat preservation water tank, the current target control strategy is determined as the second control strategy.

[0034] Specifically, after obtaining the first temperature and the second temperature, in order to improve the energy utilization rate of the renewable heat collecting device, it is determined whether the first temperature and the second temperature satisfy the first preset condition corresponding to the first control strategy. When the first temperature and the second temperature satisfy the first preset condition corresponding to the first control strategy, the current target control strategy is determined as the first control strategy. When the first temperature and the second temperature do not satisfy the first preset condition corresponding to the first control strategy, if the first temperature and the second temperature satisfy the second preset condition corresponding to the second control strategy, the current target control strategy is determined as the second control strategy.

[0035] After the target control strategy is determined, the pipeline control component and the first power piece can be controlled based on the determined target control strategy, so that the renewable heat collecting device and the heat preservation water tank form a heat preservation loop, so as to heat the heat preservation water tank by the renewable heat collecting device under the action of the first power piece. In addition, the heat pump unit and the heat preservation water tank also form a heat preservation loop, so as to heat the heat preservation water tank by the heat pump unit under the action of the first power piece. In this way, the renewable heat collecting device or the heat pump unit directly heats the heat preservation water tank, which not only improves the heating efficiency of the heat preservation water tank, but also improves the energy utilization rate of the renewable heat collecting device and reduces the energy consumption of the hot water system.

[0036] The control method of the hot water system provided in the embodiment comprises the steps of: acquiring a first temperature of the heat preservation water tank and a second temperature of the renewable heat collecting device; determining a target control strategy of the hot water system according to the first temperature and the second temperature; and controlling a pipeline control assembly and a first power member according to the target control strategy, so that the renewable heat collecting device or the heat pump unit works to heat the heat preservation water tank directly. The control method of the hot water system provided in the embodiment can improve the heating efficiency of the heat preservation water tank, and can directly utilize the sufficient renewable energy of the renewable heat collecting device to heat the heat preservation water tank directly, thereby avoiding energy waste and reducing the energy consumption of the hot water system.

[0037] Reference Figure 3 , Figure 3 The control method of the hot water system provided in the embodiment comprises the steps of: acquiring a first temperature of the heat preservation water tank and a second temperature of the renewable heat collecting device; determining a target control strategy of the hot water system according to the first temperature and the second temperature; and controlling a pipeline control assembly and a first power member according to the target control strategy, so that the renewable heat collecting device or the heat pump unit works to heat the heat preservation water tank directly. The control method of the hot water system provided in the embodiment can improve the heating efficiency of the heat preservation water tank, and can directly utilize the sufficient renewable energy of the renewable heat collecting device to heat the heat preservation water tank directly, thereby avoiding energy waste and reducing the energy consumption of the hot water system. S301: acquiring a first temperature of a heat preservation water tank and a second temperature of a renewable heat collecting device.

[0038] In the embodiment, the step S301 is consistent with the step S201 described above, and details can be referred to the description of the step S201 above, which will not be repeated here.

[0039] S302: when the first temperature is less than a set temperature of the heat preservation water tank and the second temperature is greater than a sum of the first temperature and a target temperature threshold, determining that a target control strategy of the hot water system is a first control strategy.

[0040] S303: when the target control strategy is the first control strategy, controlling the pipeline control assembly and the first power member, so that the renewable heat collecting device communicates with the heat preservation water tank, and the heat preservation water tank is heated by the renewable heat collecting device under the action of the first power member.

[0041] For the S302 step and the S303 step, the first temperature is less than the set temperature of the heat preservation water tank, and the second temperature is greater than the sum of the first temperature and the target temperature threshold, which is the first preset condition corresponding to the first control strategy. The set temperature of the heat preservation water tank can be understood as the user required water temperature, that is, the user required water temperature set by the user in advance. The target temperature threshold is a preset starting temperature difference threshold. The sum of the first temperature less than the set temperature of the heat preservation water tank indicates that the water temperature in the heat preservation water tank does not meet the user required water temperature, and the second temperature greater than the first temperature and the target temperature threshold indicates that the temperature of the renewable heat collecting device is high enough relative to the temperature of the heat preservation water tank to form an effective heat transfer temperature difference. Therefore, when the first temperature is less than the set temperature of the heat preservation water tank and the second temperature is greater than the sum of the first temperature and the target temperature threshold, it means that the renewable heat collecting device can be used to heat the heat preservation water tank, that is, the current target control strategy is the first control strategy.

[0042] When the target control strategy is the first control strategy, the pipeline control assembly and the first power member are controlled to make the renewable heat collecting device communicate with the heat preservation water tank to form a heat preservation loop, so that the water in the heat preservation water tank is extracted under the action of the first power member, the water in the heat preservation loop is heated by the renewable heat collecting device, and the heated water flows back to the heat preservation water tank, so that the renewable heat collecting device is used to heat the heat preservation water tank.

[0043] It should be noted that when the first temperature is not less than the set temperature of the heat preservation water tank, it means that the temperature of the heat preservation water tank meets the user required water temperature, and at this time the hot water system can be normally operated without heating the heat preservation water tank. Normal operation can be understood as that when the heating tank needs to be heated, the existing control logic is used to control the heat pump unit and the renewable heat collecting device to jointly heat the heating tank, and when the liquid level of the heat preservation water tank is low, the normally closed valve between the heating tank and the heat preservation water tank is opened to provide corresponding water for the heat preservation water tank by the heating tank; when the heat preservation water tank needs to be heated, the heat preservation water tank can be heated by the method provided in the embodiment.

[0044] By the above method, the embodiment sets a quantitative judgment rule that when the temperature of the heat preservation water tank is less than the set temperature and the temperature of the renewable heat collecting device is higher than the temperature of the heat preservation water tank by a certain threshold, the renewable heat collecting device is preferentially started to directly heat the heat preservation water tank, and the pipeline control assembly and the first power member are controlled to establish a corresponding heat preservation loop, so that the renewable heat collecting device directly and quickly heats the heat preservation water tank, improves the instant utilization rate of renewable energy, reduces the dependence on the heat pump unit, and improves the overall energy efficiency of the hot water system.

[0045] In the embodiment, when the target control strategy is the first control strategy (i.e., the target control strategy is used to instruct the renewable heat collecting device to heat the heat preservation water tank), the first pipeline control component in the pipeline control assembly is opened and the first power component is controlled to work, so that the renewable heat collecting device heats the heat preservation water tank under the action of the first power component.

[0046] When the target control strategy is the first control strategy, the first pipeline control component in the pipeline control assembly is opened and the first power component is controlled to work, so that the renewable heat collecting device forms a heat preservation loop with the heat preservation water tank through the first pipeline control component and the first power component, thereby circulating the water in the heat preservation water tank in the heat preservation loop under the action of the first power component, so that the water heated by the renewable heat collecting device flows back to the heat preservation water tank, and the renewable heat collecting device heats the heat preservation water tank. Through the above method, the embodiment sets a dedicated first pipeline control component for the renewable heat collecting device to realize direct control of the renewable heat collecting device on the heat preservation water tank in combination with the first power component, shortens the heat transfer path, and improves the energy utilization rate of the renewable heat collecting device and the heating efficiency of the heat preservation water tank.

[0047] In one embodiment, in the process of heating the heat preservation water tank by the renewable heat collecting device, the control method of the hot water system provided by the embodiment further includes the following steps: If the time length of heating the heat preservation water tank by the renewable heat collecting device reaches the first time length threshold, the third temperature of the heat preservation water tank is obtained; The first temperature difference between the third temperature and the first temperature is determined; Based on the first temperature difference and the first time length threshold, the temperature change rate of the heat preservation water tank within the first time length threshold is determined; When the temperature change rate is less than the preset change rate threshold and the third temperature is less than the set temperature, the pipeline control assembly and the first power component are controlled so that the heat pump unit communicates with the heat preservation water tank, and the heat pump unit is used to heat the heat preservation water tank under the action of the first power component.

[0048] The first time length threshold is a time window for judging the heating effect of the renewable heat collecting device. The first time length threshold can be set according to actual needs, for example, the first time length threshold can be 15 minutes. In addition, in order to improve the accuracy of judging the heating effect of the renewable heat collecting device, the light intensity of the outdoor environment in which the heat pump system is located can be obtained, the first correlation relationship is queried based on the light intensity, so as to obtain the time length threshold corresponding to the light intensity, and then the time length threshold corresponding to the light intensity is determined as the first time length threshold. The first correlation relationship stores a plurality of corresponding relationships between light intensity and time length threshold, and the time length threshold decreases with the increase of the light intensity. Therefore, when the light intensity is strong, the effectiveness of the heating effect of the renewable heat collecting device can be quickly confirmed, and when the light intensity is insufficient, the shortage of heat of the renewable heat collecting device is avoided. The preset change rate threshold is used to measure whether the heating effect of the renewable heat collecting device meets the standard, and the preset change rate threshold can be set according to actual needs, for example, it can be 0.2°C / min.

[0049] The third temperature is actually the temperature in the heat preservation water tank after the first time length threshold, and the third temperature is also obtained by the temperature sensor in the heat preservation water tank. After obtaining the first temperature, the first temperature difference between the third temperature and the first temperature is obtained by subtracting the first temperature from the third temperature. The ratio between the first temperature difference and the first time length threshold is determined as the temperature change rate of the heat preservation water tank within the first time length threshold. When the temperature change rate is less than the preset change rate threshold and the third temperature is less than the set temperature, it indicates that the temperature of the heat preservation water tank does not meet the water demand of the user and the heat of the renewable heat collecting device is insufficient to meet the water demand of the user, at this time, the first pipe control member is controlled to be closed, the second pipe control member is controlled to be opened, and the first power member is controlled to work, so that the heat pump unit is communicated with the heat preservation water tank, so as to heat the heat preservation water tank by the heat pump unit under the action of the first power member until the temperature of the heat preservation water tank reaches the set temperature. After the temperature of the heat preservation water tank reaches the set temperature, the second pipe control member is controlled to be closed and the first power member is controlled to stop working, so as to control the heat pump system to resume normal operation.

[0050] Before the first time length threshold is reached, the temperature of the heat preservation water tank is not less than the set temperature, which indicates that the current temperature of the heat preservation water tank meets the water demand of the user, and the temperature change rate does not need to be determined at this time. At this time, the first pipe control member is controlled to be closed and the first power member is controlled to stop working, and the hot water system resumes normal operation.

[0051] When the temperature change rate is greater than or equal to the preset change rate threshold and the third temperature is less than the set temperature, it indicates that the temperature of the heat preservation water tank does not meet the water demand of the user and the heat of the renewable heat collecting device is sufficient to meet the water demand of the user, and the first pipeline control member is controlled to be opened and the first power member is controlled to work, so that the renewable heat collecting device is communicated with the heat preservation water tank, and the heat preservation water tank is heated by the renewable heat collecting device under the action of the first power member until the temperature of the heat preservation water tank reaches the set temperature.

[0052] In the above manner, the first time threshold is set, and the temperature change rate of the heat preservation water tank in the period is monitored. When the temperature change rate is lower than the preset standard and the temperature of the heat preservation water tank does not reach the set temperature, the heating of the renewable heat collecting device is automatically switched to the heating of the heat pump unit, which avoids invalid waiting and energy waste caused by intermittent heat shortage of the renewable heat collecting device, ensures the reliability of the heating process of the heat preservation water tank, and improves the user experience.

[0053] In another embodiment, in the process of heating the heat preservation water tank by the renewable heat collecting device, the control method of the hot water system provided by the embodiment further includes the following steps: The actual flow of the first power member is obtained; Based on the first temperature, the second temperature, the actual flow, and the second time threshold, the theoretical heating amount of the renewable heat collecting device in the second time threshold is determined; When the time length of heating the heat preservation water tank by the renewable heat collecting device reaches the second time threshold, the fourth temperature of the heat preservation water tank and the actual water amount of the heat preservation water tank are obtained; Based on the first temperature, the fourth temperature, and the actual water amount, the actual heating amount of the renewable heat collecting device in the second time threshold is determined; Based on the theoretical heating amount and the actual heating amount, the actual heating rate of the renewable heat collecting device in the second time threshold is determined; When the actual heating rate is less than the preset heating rate threshold and the fourth temperature is less than the set temperature, the pipeline control assembly and the first power member are controlled, so that the heat pump unit is communicated with the heat preservation water tank, and the heat preservation water tank is heated by the heat pump unit under the action of the first power member.

[0054] In the above, the actual flow rate of the first power member can be obtained by a flow sensor arranged at the outlet of the first power member. The second time length threshold is a preset time window for determining the heating rate of the renewable heat collecting device, and the second time length threshold can be set according to actual needs, for example, the second time length threshold can be 10 minutes. The actual water amount can be obtained by a water level sensor inside the heat preservation water tank. The fourth temperature is obtained by a temperature sensor arranged in the heat preservation water tank. The preset heating rate threshold is a preset minimum acceptable actual heating rate, which is used to determine whether the heating effect of the renewable heat collecting device meets the standard, and the preset heating rate threshold can be set according to actual needs, for example, the preset heating rate threshold can be 50%.

[0055] After obtaining the actual flow rate, the second temperature is subtracted from the first temperature to obtain a second temperature difference between the second temperature and the first temperature, and the second temperature difference, the actual flow rate and the second time length threshold are input into a theoretical heating amount formula to obtain the theoretical heating amount of the renewable heat collecting device within the second time length threshold. The theoretical heating amount formula includes:

[0056] In the above formula, represents the theoretical heating amount, represents the specific heat capacity of water, represents the density of water, represents the actual flow rate, represents the second temperature difference, represents the second time length threshold.

[0057] When the time length during which the renewable heat collecting device heats the heat preservation water tank reaches the second time length threshold, if the fourth temperature and the actual water amount are obtained, the fourth temperature is subtracted from the first temperature to obtain a third temperature difference between the fourth temperature and the first temperature, and the third temperature difference and the actual water amount are input into an actual heating amount formula to obtain the actual heating amount of the renewable heat collecting device within the second time length threshold. The actual heating amount formula includes:

[0058] In the above formula, represents the actual heating amount, represents the specific heat capacity of water, represents the actual water amount, represents the third temperature difference.

[0059] After the theoretical heating amount and the actual heating amount are obtained, a ratio between the actual heating amount and the theoretical heating amount is determined as an actual heating rate of the renewable heat collecting device within the second time length threshold. When the actual heating rate is less than the preset heating rate threshold and the fourth temperature is less than the set temperature, it indicates that the temperature of the heat preservation water tank does not meet the water demand of the user and the heat of the renewable heat collecting device is insufficient to meet the water demand of the user, at this time, the first pipeline control member is controlled to be closed, the second pipeline control member is controlled to be opened, and the first power member is controlled to work, so that the heat pump unit is communicated with the heat preservation water tank, to heat the heat preservation water tank by using the heat pump unit under the action of the first power member until the temperature of the heat preservation water tank reaches the set temperature, after the temperature of the heat preservation water tank reaches the set temperature, the second pipeline control member is controlled to be closed and the first power member is controlled to stop working, so as to control the heat pump system to resume normal operation.

[0060] In the above manner, in the embodiment, the theoretical heating amount and the actual heating amount of the renewable heat collecting device are obtained, to determine the actual heating rate of the renewable heat collecting device by using the theoretical heating amount and the actual heating amount, when the actual heating rate is lower than the preset heating rate threshold, the heating is automatically switched from the renewable heat collecting device to the heat pump unit, avoiding invalid waiting and energy waste caused by intermittent heat shortage of the renewable heat collecting device, ensuring the reliability of the heating process of the heat preservation water tank and improving the user experience.

[0061] In the embodiment, the target temperature threshold can be determined in the following manner: A preset temperature threshold, an actual environment temperature and an actual season of an outdoor environment where the hot water system is located are obtained; Based on the actual environment temperature and the actual season, a temperature correction value corresponding to the preset temperature threshold is determined; The preset temperature threshold is corrected by using the temperature correction value to obtain the target temperature threshold.

[0062] The preset temperature threshold is a temperature threshold for judging whether to start the renewable heat collecting device, for example, the preset temperature threshold can be 5℃. A temperature sensor can be arranged at a corresponding position in the hot water system to obtain the actual environment temperature of the outdoor environment where the hot water system is located by using the temperature sensor. The actual season can be understood as spring, summer, autumn or winter, and the actual season can be obtained by obtaining the current date, to determine the actual season of the outdoor environment by using the relationship between the current date and the season.

[0063] After the actual ambient temperature and the actual season are obtained, a correspondence between the preset ambient temperature, the season and the temperature correction value is set in advance, the actual ambient temperature and the actual season are used to query the correspondence, so as to obtain the temperature correction value corresponding to the actual ambient temperature and the actual season, and the sum value between the determined temperature correction value and the preset temperature threshold value is determined to correct the preset temperature threshold value by the temperature correction value, so as to obtain the target temperature threshold value. Through the above method, the ambient temperature and the season are obtained, and the starting temperature difference threshold value of the renewable heat collecting device and the heat preservation water tank is dynamically corrected based thereon, which optimizes the fixed threshold value to a variable that changes with the climate, so that the heat of the renewable heat collecting device can be fully utilized, and the energy efficiency of the hot water system under different climates is improved.

[0064] S304: When the first temperature is less than the set temperature and the second temperature is less than or equal to the sum value between the first temperature and the target temperature threshold value, determining that the target control strategy corresponding to the hot water system is the second control strategy.

[0065] S305: When the target control strategy is the second control strategy, controlling the pipeline control assembly and the first power member, so that the heat pump unit is in communication with the heat preservation water tank, to heat the heat preservation water tank by the heat pump unit under the action of the first power member.

[0066] For the above S304 and S305, when the first temperature is less than the set temperature of the heat preservation water tank and the second temperature is less than or equal to the sum value between the first temperature and the target temperature threshold value, the second control strategy corresponds to a second preset condition. The second temperature is less than or equal to the sum value between the first temperature and the target temperature threshold value, which means that the temperature of the renewable heat collecting device cannot form an effective heat transfer temperature difference with the temperature of the heat preservation water tank. Therefore, when the first temperature is less than the set temperature of the heat preservation water tank and the second temperature is less than or equal to the sum value between the first temperature and the target temperature threshold value, the heat pump unit can be used to heat the heat preservation water tank, that is, the current target control strategy is the second control strategy.

[0067] When the target control strategy is the second control strategy, the pipeline control assembly and the first power member are controlled, so that the heat pump unit is in communication with the heat preservation water tank to form a heat preservation loop, so that the water in the heat preservation water tank is extracted under the action of the first power member, so that the heat pump unit heats the water in the heat preservation loop, and the heated water flows back to the heat preservation water tank, so that the heat pump unit heats the heat preservation water tank.

[0068] By the above mode, the embodiment sets the quantitative judgment rule that the heat pump unit directly heats the heat preservation water tank when the temperature of the heat preservation water tank is less than the set temperature and the temperature of the renewable heat collecting device is less than or equal to the temperature of the heat preservation water tank by a certain threshold, and controls the pipeline control assembly and the first power member to establish the corresponding heat preservation loop, so that the heat pump unit directly and quickly heats the heat preservation water tank, the heating efficiency of the heat preservation water tank is improved, and the user experience is improved.

[0069] In the embodiment, when the target control strategy is the second control strategy (that is, the target control strategy is used to instruct the heat pump unit to heat the heat preservation water tank), the second pipeline control member in the pipeline control assembly is turned on and the first power member is controlled to work, so that the heat pump unit heats the heat preservation water tank under the action of the first power member.

[0070] When the target control strategy is the second control strategy, the second pipeline control member in the pipeline control assembly is turned on and the first power member is controlled to work, so that the heat pump unit forms a heat preservation loop with the heat preservation water tank through the second pipeline control member and the first power member, so that the water in the heat preservation water tank is circulated in the heat preservation loop under the action of the first power member, so that the water is heated by the heat pump unit and then flows back to the heat preservation water tank, the heat pump unit heats the heat preservation water tank, and the temperature of the heat preservation water tank reaches the set temperature. To control the second pipeline control member to be closed and the first power member to stop working, so as to control the heat pump system to resume normal operation, that is, there is no need to heat the heat preservation water tank. By the above mode, the embodiment sets a special second pipeline control member for the heat pump unit, so as to realize direct control of the heat pump unit on the heat preservation water tank in combination with the first power member, shorten the heat transfer path, improve the heating efficiency of the heat preservation water tank and the user experience.

[0071] The control method of the hot water system provided by the embodiment sets the pipeline control assembly and the first power member to construct a heating loop in which the heat pump unit and the renewable heat collecting device heat the heat preservation water tank respectively, so that the temperature of the heat preservation water tank and the temperature of the renewable heat collecting device are obtained during the operation of the hot water system, the heating mode for heating the heat preservation water tank is determined according to the obtained temperature, and then the pipeline control assembly and the first power member are controlled based on the determined heating mode, so that the heating loop in which the heat pump unit or the renewable heat collecting device works to realize direct heating of the heat preservation water tank by the heat pump unit or the renewable heat collecting device. Not only improves the heating efficiency of the heat preservation water tank, but also directly uses the sufficient renewable energy of the renewable heat collecting device to realize direct heating of the heat preservation water tank, avoids energy waste, and reduces the energy consumption of the hot water system.

[0072] Reference Figure 4 As an example, the control process of the entire hot water system is specifically introduced as follows.

[0073] obtaining a first temperature of the heat preservation water tank and a second temperature of the renewable heat collecting device; determining whether the first temperature is less than a set temperature of the heat preservation water tank; controlling the hot water system to operate normally when the second temperature is not less than the set temperature of the heat preservation water tank; determining whether the second temperature is greater than a sum of the first temperature and a target temperature threshold when the first temperature is less than the set temperature of the heat preservation water tank; controlling the first power member to work and controlling the first pipeline control member and the fourth pipeline control member to open to enable the renewable heat collecting device to heat the heat preservation water tank when the second temperature is greater than the sum of the first temperature and the target temperature threshold; determining whether the temperature of the heat preservation water tank is less than the set temperature of the heat preservation water tank in the process that the renewable heat collecting device heats the heat preservation water tank; controlling the first power member to stop working and controlling the first pipeline control member and the fourth pipeline control member to close to control the hot water system to operate normally when the temperature of the heat preservation water tank is not less than the set temperature of the heat preservation water tank; determining a temperature change rate of the heat preservation water tank within a first time threshold when the temperature of the heat preservation water tank is less than the set temperature of the heat preservation water tank if a time length that the renewable heat collecting device heats the heat preservation water tank reaches the first time threshold; determining whether the temperature change rate is less than a preset change rate threshold; controlling the first pipeline control member and the fourth pipeline control member to close and controlling the second pipeline control member and the third pipeline control member to open to enable the heat pump unit to heat the heat preservation water tank until the temperature of the heat preservation water tank is not less than the set temperature of the heat preservation water tank to control the hot water system to operate normally when the temperature change rate is less than the preset change rate threshold; continuing to control the first power member to work and controlling the first pipeline control member and the fourth pipeline control member to open until the temperature of the heat preservation water tank is not less than the set temperature of the heat preservation water tank to control the hot water system to operate normally when the temperature change rate is greater than or equal to the preset change rate threshold; controlling the first power member to work and controlling the second pipeline control member and the third pipeline control member to open to enable the heat pump unit to heat the heat preservation water tank until the temperature of the heat preservation water tank is not less than the set temperature of the heat preservation water tank to control the hot water system to operate normally when the second temperature is less than or equal to the sum of the first temperature and the target temperature threshold.

[0074] Reference Figure 5 , Figure 5A structural schematic diagram of a control device of a hot water system is provided in the embodiments of the present application. The control device of the hot water system provided in the embodiments of the present application comprises a heat pump unit, a renewable heat collecting device, a pipeline control assembly, a first power member and a heat preservation water tank. The inlet of the heat pump unit and the renewable heat collecting device is connected with the first end of the heat preservation water tank through the pipeline control assembly and the first power member. The outlet of the heat pump unit and the renewable heat collecting device is connected with the second end of the heat preservation water tank. The device comprises an acquisition module 10, a determination module 20 and a control module 30. The acquisition module 10 is used to acquire the first temperature of the heat preservation water tank and the second temperature of the renewable heat collecting device. The determination module 20 is used to determine the target control strategy corresponding to the hot water system according to the first temperature and the second temperature. The target control strategy is used to instruct to heat the heat preservation water tank by using the renewable heat collecting device or the heat pump unit. The control module 30 is used to control the pipeline control assembly and the first power member based on the target control strategy, so as to heat the heat preservation water tank under the action of the first power member.

[0075] In the embodiments, the determination module 20 is further used to: when the first temperature is less than the set temperature of the heat preservation water tank and the second temperature is greater than the sum value between the first temperature and a target temperature threshold, determine that the target control strategy corresponding to the hot water system is a first control strategy.

[0076] In the embodiments, the control module 30 is further used to: when the target control strategy is the first control strategy, control the pipeline control assembly and the first power member, so that the renewable heat collecting device is in communication with the heat preservation water tank, to heat the heat preservation water tank by using the renewable heat collecting device under the action of the first power member.

[0077] In the embodiments, the control module 30 is further used to: in the process of heating the heat preservation water tank by using the renewable heat collecting device, if the time length of heating the heat preservation water tank by using the renewable heat collecting device reaches a first time length threshold, acquire the third temperature of the heat preservation water tank; determine the first temperature difference between the third temperature and the first temperature; determine the temperature change rate of the heat preservation water tank within the first time length threshold based on the first temperature difference and the first time length threshold; when the temperature change rate is less than the preset change rate threshold and the third temperature is less than the set temperature, controlling the pipeline control component and the first power member so that the heat pump unit is in communication with the heat preservation water tank to heat the heat preservation water tank by the heat pump unit under the action of the first power member.

[0078] In the embodiment, the control module 30 is further configured to: during the heating of the heat preservation water tank by the renewable heat collecting device, acquiring an actual flow rate of the first power member; based on the first temperature, the second temperature, the actual flow rate and a second time length threshold, determining a theoretical heating amount of the renewable heat collecting device within the second time length threshold; when the time length during which the heat preservation water tank is heated by the renewable heat collecting device reaches the second time length threshold, acquiring a fourth temperature of the heat preservation water tank and an actual water amount of the heat preservation water tank; based on the first temperature, the fourth temperature and the actual water amount, determining an actual heating amount of the renewable heat collecting device within the second time length threshold; based on the theoretical heating amount and the actual heating amount, determining an actual heating rate of the renewable heat collecting device within the second time length threshold; when the actual heating rate is less than a preset heating rate threshold and the fourth temperature is less than the set temperature, controlling the pipeline control component and the first power member so that the heat pump unit is in communication with the heat preservation water tank to heat the heat preservation water tank by the heat pump unit under the action of the first power member.

[0079] In the embodiment, the determination module 20 is further configured to: acquire a preset temperature threshold, an actual environment temperature and an actual season of an outdoor environment in which the hot water system is located; based on the actual environment temperature and the actual season, determine a temperature correction value corresponding to the preset temperature threshold; correct the preset temperature threshold by using the temperature correction value to obtain the target temperature threshold.

[0080] In the embodiment, the determination module 20 is further configured to: when the first temperature is less than the set temperature and the second temperature is less than or equal to a sum value between the first temperature and the target temperature threshold, determine that a target control strategy corresponding to the hot water system is a second control strategy.

[0081] In the embodiment, the control module 30 is further configured to: When the target control strategy is the second control strategy, the pipeline control assembly and the first power member are controlled so that the heat pump unit is in communication with the heat preservation water tank, and the heat preservation water tank is heated by the heat pump unit under the action of the first power member.

[0082] In this embodiment, the pipeline control assembly includes a first pipeline control member and a second pipeline control member, the inlet of the renewable heat collecting device is connected to the first end of the heat preservation water tank through the first pipeline control member and the first power member, and the inlet of the heat pump unit is connected to the first end of the heat preservation water tank through the second pipeline control member and the first power member; the control module 30 is further configured to: When the target control strategy is used to instruct the heat preservation water tank to be heated by the renewable heat collecting device, the first pipeline control member is controlled to be opened and the first power member is controlled to work, so that the heat preservation water tank is heated by the renewable heat collecting device under the action of the first power member; When the target control strategy is used to instruct the heat preservation water tank to be heated by the heat pump unit, the second pipeline control member is controlled to be opened and the first power member is controlled to work, so that the heat preservation water tank is heated by the heat pump unit under the action of the first power member.

[0083] The control device of the hot water system provided in this embodiment is configured to construct a heating circuit in which the heat pump unit and the renewable heat collecting device heat the heat preservation water tank by arranging the pipeline control assembly and the first power member, so that the temperature of the heat preservation water tank and the temperature of the renewable heat collecting device are acquired during the operation of the hot water system, the heating mode for heating the heat preservation water tank is determined according to the acquired temperatures, and then the pipeline control assembly and the first power member are controlled based on the determined heating mode, so that the heating circuit in which the heat pump unit or the renewable heat collecting device is located is operated, to realize the direct heating of the heat preservation water tank by the heat pump unit or the renewable heat collecting device. This not only improves the heating efficiency of the heat preservation water tank, but also directly uses the sufficient renewable energy of the renewable heat collecting device to heat the heat preservation water tank, avoids energy waste, and reduces the energy consumption of the hot water system.

[0084] Figure 6 A structural schematic diagram of a hot water system is provided for the embodiments of the present application, Figure 6The illustrated hot water system 600 includes at least one processor 601, memory 602, at least one network interface 604, other user interfaces 603. The various components of the hot water system 600 are coupled together by a bus system 605. As will be appreciated by those skilled in the art, the bus system 605 is configured to implement communications among the components. The bus system 605 includes a data bus to facilitate the transfer of data and instructions between and among the components, a control bus to facilitate the transfer of control signals between and among the components, and a status bus to facilitate the transfer of status information between and among the components. For the sake of proper clarity, the various buses are shown in FIG. 6 as the bus system 605. Figure 6

[0085] The user interface 603 can include a display, a keyboard or pointing device (e.g., a mouse, trackball, touchpad, or touchscreen), etc.

[0086] It is to be appreciated that the memory 602 in the embodiments of the application can be volatile or nonvolatile memory, or can include both volatile and nonvolatile memory. By way of illustration, and not limitation, nonvolatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable PROM (EPROM), electrically EPROM (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), which acts as external cache. By way of illustration and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous dynamic RAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), Synch link DRAM (SLDRAM), and direct Rambus RAM (DRRAM). The memory 602 described herein is intended to include, without being limited to, these and any other suitable types of memory.

[0087] In some embodiments, the memory 602 stores elements, modules, or data structures, or a subset thereof, or their extensions, including an operating system 6021 and applications 6022.

[0088] ​The operating system 6021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application programs 6022 include various application programs, such as a media player (Media Player), a browser (Browser), and the like, for implementing various application services. The programs implementing the method embodiments of the present application can be included in the application programs 6022.

[0089] In the embodiments of the present application, the processor 601 is configured to execute the method steps provided by the various method embodiments by invoking the programs or instructions stored in the memory 602, specifically, the programs or instructions stored in the application programs 6022.

[0090] The above-described method embodiments of the present application can be applied to the processor 601 or implemented by the processor 601. The processor 601 can be an integrated circuit chip having a signal processing capability. In the implementation process, the various steps of the above-described method can be completed by hardware integrated logic circuits in the processor 601 or by instructions in the form of software. The above-described processor 601 can be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The various methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as a hardware code processing processor to execute, or a combination of hardware and software units in the code processing processor to execute. The software unit can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, a register, or other mature storage media in the art. The storage medium is located in the memory 602, and the processor 601 reads the information in the memory 602 and completes the steps of the above-described method in combination with the hardware.

[0091] It can be understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing units can be implemented within one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSP Devices, DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.

[0092] For software implementation, the techniques described herein can be implemented with a processing unit that executes program code that includes functions described herein. The program code can be stored in a memory and executed by the processing unit. The memory can be implemented within the processing unit or external to the processing unit.

[0093] The hot water system provided by the embodiments can be a hot water system as shown in Figure 6 , can perform all steps of the control method of the hot water system as shown in Figures 2-4 , and thus achieve the technical effects of the control method of the hot water system as shown in Figures 2-4 . For details, please refer to the relevant description, which will not be repeated here for brevity. Figures 2-4

[0094] The embodiments of the present application also provide a storage medium (computer readable storage medium). The storage medium stores one or more programs. The storage medium can include a volatile memory, such as a random access memory; the storage medium can also include a non-volatile memory, such as a read-only memory, a flash memory, a hard disk, or a solid state disk; the storage medium can also include a combination of the above kinds of memories.

[0095] When the one or more programs stored in the storage medium can be executed by one or more processors to implement the hot water system control method described above, which is executed on the control device side of the hot water system.

[0096] ​Those skilled in the art should further appreciate that the elements and algorithms described in connection with the examples disclosed herein can be embodied in electronic hardware, computer software, or in combinations of both. To clearly illustrate this interchangeability of hardware and software, various examples have been described herein in terms of their general functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans can implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

[0097] The steps of a method or algorithm described in connection with the examples disclosed herein can be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module can reside in random access memory (RAM), flash memory, read-only memory (ROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0098] The specific implementation described above is further to the purposes, technical solutions, and beneficial effects of the present application. It should be understood that the above description is merely a specific implementation of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A control method for a hot water system, characterized in that, The hot water system includes a heat pump unit, a renewable heat collection device, a pipeline control assembly, a first power component, and an insulated water tank. The inlets of the heat pump unit and the renewable heat collection device are connected to a first end of the insulated water tank through the pipeline control assembly and the first power component. The outlets of the heat pump unit and the renewable heat collection device are both connected to a second end of the insulated water tank. The method includes: Obtain the first temperature of the insulated water tank and the second temperature of the renewable heat collection device; Based on the first temperature and the second temperature, a target control strategy corresponding to the hot water system is determined. The target control strategy is used to instruct the use of the renewable heat collection equipment or the heat pump unit to heat the insulated water tank. Based on the target control strategy, the pipeline control component and the first power component are controlled to heat the insulated water tank under the action of the first power component.

2. The method according to claim 1, characterized in that, The step of determining the target control strategy corresponding to the hot water system based on the first temperature and the second temperature includes: When the first temperature is less than the set temperature of the insulated water tank and the second temperature is greater than the sum of the first temperature and the target temperature threshold, the target control strategy corresponding to the hot water system is determined to be the first control strategy. The step of controlling the pipeline control component and the first power component based on the target control strategy, so as to achieve heating of the insulated water tank under the action of the first power component, includes: When the target control strategy is the first control strategy, the pipeline control component and the first power component are controlled to connect the renewable heat collection device to the insulated water tank, so that the renewable heat collection device can be used to heat the insulated water tank under the action of the first power component.

3. The method according to claim 2, characterized in that, The method further includes: During the process of the renewable heat collection device heating the insulated water tank, if the time elapsed during the heating of the insulated water tank by the renewable heat collection device reaches a first time threshold, the third temperature of the insulated water tank is obtained. Determine the first temperature difference between the third temperature and the first temperature; Based on the first temperature difference and the first time threshold, the rate of temperature change of the insulated water tank within the first time threshold is determined; When the temperature change rate is less than a preset change rate threshold and the third temperature is less than the set temperature, the pipeline control component and the first power component are controlled to connect the heat pump unit to the insulated water tank, so that the heat pump unit can heat the insulated water tank under the action of the first power component.

4. The method according to claim 2, characterized in that, The method further includes: During the process of the renewable heat collection device heating the insulated water tank, the actual flow rate of the first power component is obtained; Based on the first temperature, the second temperature, the actual flow rate, and the second duration threshold, the theoretical heating amount of the renewable thermal collector within the second duration threshold is determined; When the time elapsed during which the renewable heat collection device heats the insulated water tank reaches the second time threshold, the fourth temperature of the insulated water tank and the actual water volume of the insulated water tank are obtained. Based on the first temperature, the fourth temperature, and the actual water volume, the actual heating amount of the renewable thermal collector within the second time threshold is determined. Based on the theoretical heating amount and the actual heating amount, the actual heating rate of the renewable heat collection device within the second time threshold is determined; When the actual heating rate is less than the preset heating rate threshold and the fourth temperature is less than the set temperature, the pipeline control component and the first power component are controlled to connect the heat pump unit to the insulated water tank, so that the heat pump unit can heat the insulated water tank under the action of the first power component.

5. The method according to any one of claims 2 to 4, characterized in that, The target temperature threshold is determined in the following manner: Obtain the preset temperature threshold and the actual ambient temperature and season of the outdoor environment where the hot water system is located; Based on the actual ambient temperature and the actual season, determine the temperature correction value corresponding to the preset temperature threshold; The preset temperature threshold is corrected using the temperature correction value to obtain the target temperature threshold.

6. The method according to claim 2, characterized in that, The step of determining the target control strategy corresponding to the hot water system based on the first temperature and the second temperature includes: When the first temperature is less than the set temperature and the second temperature is less than or equal to the sum of the first temperature and the target temperature threshold, the target control strategy corresponding to the hot water system is determined to be the second control strategy. The step of controlling the pipeline control component and the first power component based on the target control strategy, so as to achieve heating of the insulated water tank under the action of the first power component, includes: When the target control strategy is the second control strategy, the pipeline control component and the first power component are controlled to connect the heat pump unit to the insulated water tank, so that the heat pump unit can heat the insulated water tank under the action of the first power component.

7. The method according to claim 1, characterized in that, The pipeline control assembly includes a first pipeline control component and a second pipeline control component. The inlet of the renewable thermal collector is connected to the first end of the insulated water tank through the first pipeline control component and the first power component. The inlet of the heat pump unit is connected to the first end of the insulated water tank through the second pipeline control component and the first power component. The step of controlling the pipeline control component and the first power component based on the target control strategy, so as to achieve heating of the insulated water tank under the action of the first power component, includes: When the target control strategy is used to instruct the use of the renewable heat collection device to heat the insulated water tank, the first pipeline control component is controlled to open and the first power component is controlled to work, so that the renewable heat collection device can heat the insulated water tank under the action of the first power component. When the target control strategy is used to instruct the heat pump unit to heat the insulated water tank, the second pipeline control component is controlled to open and the first power component is controlled to work, so that the heat pump unit can heat the insulated water tank under the action of the first power component.

8. A control device for a hot water system, characterized in that, The hot water system includes a heat pump unit, a renewable heat collection device, a pipeline control assembly, a first power component, and an insulated water tank. The inlets of the heat pump unit and the renewable heat collection device are connected to a first end of the insulated water tank through the pipeline control assembly and the first power component. The outlets of the heat pump unit and the renewable heat collection device are both connected to a second end of the insulated water tank. The device includes: The acquisition module is used to acquire the first temperature of the insulated water tank and the second temperature of the renewable heat collection device; The determination module is used to determine the target control strategy corresponding to the hot water system based on the first temperature and the second temperature. The target control strategy is used to instruct the use of the renewable heat collection equipment or the heat pump unit to heat the insulated water tank. The control module is used to control the pipeline control component and the first power component based on the target control strategy, so as to realize the heating of the insulated water tank under the action of the first power component.

9. A hot water system, characterized in that, include: The system includes a heat pump unit, a renewable heat collection device, a pipeline control component, a first power component, an insulated water tank, a processor, and a memory. The inlets of the heat pump unit and the renewable heat collection device are connected to the first end of the insulated water tank through the pipeline control component and the first power component. The outlets of the heat pump unit and the renewable heat collection device are both connected to the second end of the insulated water tank. The processor is used to execute the control program of the hot water system stored in the memory to implement the control method of the hot water system according to any one of claims 1 to 7.

10. A storage medium, characterized in that, The storage medium stores one or more programs, which can be executed by one or more processors to implement the control method of the hot water system according to any one of claims 1 to 7.

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