Integrated control device for a dual water heating system

Abstract

The utility model relates to a heat -supplying water equipment technical field discloses a kind of integrated control device for double hot water system, including the control cabinet body being connected with solar water tank and energy-consuming water heater, cold and hot water pipeline group and control valve group are arranged in the control cabinet body, cold water inlet of cold and hot water pipeline group is connected with external cold water pipeline, the first connecting end of cold and hot water pipeline group is connected with the inlet and return water port of solar water tank by solar energy supply and return water pipeline, its second connecting end is connected with the cold water port of energy-consuming water heater by energy-consuming water heater water supply pipeline, its third connecting end is connected with the hot water port of energy-consuming water heater by energy-consuming water heater return water pipeline, and its hot water outlet end is connected with external hot water pipeline;The utility model has the characteristics of high adaptability, can quickly integrate solar water heater and energy-consuming water heater such as electricity / gas into a composite hot water system, realize the flexible switching use of multiple working conditions.

Description

Technical Field

[0001] This utility model relates to the field of hot water supply equipment technology, and in particular to an integrated control device for a dual hot water system. Background Technology

[0002] Solar water heaters and electric / gas water heaters are two types of hot water supply equipment widely used in industry and household life. However, each has its own obvious shortcomings: solar water heaters rely on sunlight conditions, and their heating efficiency will drop significantly when encountering cloudy, rainy, or smoggy weather, making it difficult to supply hot water stably; while electric / gas water heaters can work continuously without being restricted by the weather, they have the problems of high energy consumption and high long-term operating costs.

[0003] Therefore, combining solar water heaters with energy-consuming water heaters such as electric / gas water heaters in series / parallel connection creates a high-quality hot water supply solution that balances stability and economy. On sunny days, solar energy is used first to generate heat, maximizing energy cost savings. When the weather is bad, the system switches to electric / gas water heaters to supplement the heat, ensuring a stable output of hot water and thus compensating for the shortcomings of both types of equipment.

[0004] However, in application scenarios where integrated design has not been carried out in advance, there will be considerable practical difficulties: since solar water heaters and energy-consuming water heaters such as electric / gas water heaters originally operate independently, in order to achieve series / parallel coordinated operation, the existing pipelines need to be replaced, and complex control valve groups and linkage control systems need to be installed to achieve smooth switching under different operating conditions. This not only increases construction costs, but also requires a high level of professionalism in installation and commissioning. Utility Model Content

[0005] The main technical problem to be solved by this utility model is to provide an integrated control device for a dual hot water system, which has the characteristics of high adaptability and can quickly integrate solar water heaters and energy-consuming water heaters such as electric / gas water heaters into a composite hot water system, realizing flexible switching between multiple working conditions.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: An integrated control device for a dual hot water system includes a control box connected to a solar water tank and an energy-consuming water heater. The control box contains a hot and cold water pipe assembly and a control valve assembly. The control valve assembly controls the on / off state of various parts of the hot water pipe assembly. The cold water inlet of the hot and cold water pipe assembly is connected to an external cold water pipe. The first connection end of the hot and cold water pipe assembly is connected to the inlet and outlet ports of the solar water tank through the solar water supply and return pipes. The second connection end is connected to the cold water port of the energy-consuming water heater through the energy-consuming water heater supply pipe. The third connection end is connected to the hot water port of the energy-consuming water heater through the energy-consuming water heater return pipe, and the hot water outlet end is connected to an external hot water pipe. A reader is installed on the wall of the control box.

[0007] The following are further optimizations of the above technical solution by this utility model: The hot and cold water piping system includes an in-tank cold water piping system, an in-tank hot water piping system, and a mixing pipe. The in-tank cold water piping system is used to supply cold water from the external cold water piping system to the solar water tank and the energy-consuming water heater. The in-tank hot water piping system is used to supply hot water from the solar water tank and the energy-consuming water heater to the external hot water piping system. The mixing pipe is used to pass cold water from the in-tank cold water piping system into the in-tank hot water piping system.

[0008] Further optimization: The control valve group includes a three-way switching valve, a water supply valve, a switch valve, and a mixing valve. The first end of the three-way switching valve is connected to the solar water supply and return pipeline, and the second end is connected to the water supply pipeline of the energy-consuming water heater. The cold water pipeline and the hot water pipeline inside the tank are both connected to its third end. The water supply valve is installed on the cold water pipeline inside the tank, the switch valve is installed at the inlet of the hot water pipeline inside the tank, and the mixing valve is installed on the mixing pipeline.

[0009] Further optimization: The control box is equipped with a solar water tank interface, an energy-consuming water heater supply interface, an energy-consuming water heater return interface, a cold water pipe interface, and a hot water pipe interface.

[0010] Further optimization: The solar water tank interface is connected to the first end of the three-way switching valve, and is connected to the solar water tank through the solar water supply and return pipeline.

[0011] Further optimization: The water supply interface of the energy-consuming water heater is connected to the second end of the three-way switching valve, and is connected to the water supply end of the energy-consuming water heater through the water supply pipeline of the energy-consuming water heater.

[0012] Further optimization: The return water interface of the energy-consuming water heater is connected to the hot water pipe inside the tank, and is also connected to the return water end of the energy-consuming water heater through the return water pipe of the energy-consuming water heater.

[0013] Further optimization: The external cold water pipeline is connected to the inlet of the cold water pipeline and mixing pipeline inside the tank through the cold water pipeline interface, and the external hot water pipeline is connected to the outlet of the hot water pipeline inside the tank through the hot water pipeline interface.

[0014] Further optimization: A temperature sensor is installed inside the solar water tank, and the temperature sensor is connected to a display.

[0015] Further optimization: A liquid level sensor is installed inside the solar water tank, and the liquid level sensor is connected to a reader.

[0016] The present invention adopts the above technical solution and has the following beneficial effects: 1. This utility model adds a highly adaptable integrated control device between independently operating solar water heaters and energy-consuming water heaters, enabling the originally independent devices to complement and link together, thus providing users with a solution for the complementary use of multi-heat source hot water systems that is easy to operate and install.

[0017] 2. The control valve group inside the control box is designed as an integrated unit, which not only simplifies the internal structure of the control device and reduces redundant parts, but also significantly reduces the overall space occupied by the equipment, making it flexible to adapt to small installation scenarios such as home balconies and kitchen corners. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a control diagram of the single solar cell operation state in an embodiment of this utility model; Figure 2 This is a control diagram illustrating the series operation of a solar water heater and an energy-consuming water heater in an embodiment of this utility model. Figure 3 This is a control diagram of a single-energy-consuming water heater in operation according to an embodiment of this utility model.

[0020] The components include: 1. Solar water tank; 2. Energy-consuming water heater; 3. Control box; 4. External cold water pipe; 5. Solar water supply and return pipe; 6. Energy-consuming water heater supply pipe; 7. Energy-consuming water heater return pipe; 8. External hot water pipe; 9. Cold water pipe inside the tank; 10. Hot water pipe inside the tank; 11. Mixing pipe; 12. Three-way switching valve; 13. Water supply valve; 14. Switch valve; 15. Mixing valve; 16. Solar water tank interface; 17. Energy-consuming water heater supply interface; 18. Energy-consuming water heater return interface; 19. Cold water pipe interface; 20. Hot water pipe interface; 21. Temperature sensor; 22. Liquid level sensor; 23. Reader; 24. Water terminal valve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1-3 As shown, an integrated control device for a dual hot water system includes a control box 3 connected to a solar water tank 1 and an energy-consuming water heater 2.

[0023] In this embodiment, both the solar water tank 1 and the energy-consuming water heater 2 are mature independent conventional water heating equipment on the market. They can be connected to this utility model without modifying the equipment itself, making them more adaptable.

[0024] Among them, solar water tank 1 is a heat storage and collection tank that is matched with a conventional household solar thermal system. Its core components associated with this system include: a heat-insulating box with long-term heat preservation performance (usually a composite structure of polyurethane foam layer and stainless steel inner liner, which can effectively reduce heat loss), standardized water supply and drainage interfaces, and an exhaust overflow port on the top.

[0025] From the perspective of installation requirements, the solar water tank 1 needs to be placed in an area with sufficient sunlight that is vertically higher than the water-using end, in order to ensure the efficiency of solar heat collection, and at the same time, to achieve the gravity water supply capacity of the foundation by taking advantage of the height difference.

[0026] The energy-consuming water heater 2 is a conventional household electric or gas water heater. These devices have their own independent operation and control system. The key components associated with the control device in this utility model are the cold water input port and the hot water output port. These input and output ports adopt industry-standard interface specifications and can be directly connected to the corresponding interface of the control box 3 without the need for additional adapters.

[0027] In addition, the control box 3, as the core load-bearing component of this utility model, is an integrated housing that integrates all control elements, valve groups and interfaces in the system: its outer shell is made of flame-retardant and weather-resistant material, and its interior integrates components such as pipe joints and control valves through modular layout, which not only ensures the safety and durability of the equipment, but also provides a centralized operating platform for subsequent installation and maintenance.

[0028] Preferably, the control box 3 is equipped with a hot and cold water pipe assembly and a control valve assembly. The control valve assembly is used to control the on / off state of various parts of the hot water pipe assembly. The cold water inlet of the hot and cold water pipe assembly is connected to the external cold water pipe 4. The first connection end of the hot and cold water pipe assembly is connected to the inlet and outlet ports of the solar water tank 1 through the solar water supply and return pipe 5. Its second connection end is connected to the cold water port of the energy-consuming water heater 2 through the energy-consuming water heater supply pipe 6. Its third connection end is connected to the hot water port of the energy-consuming water heater 2 through the energy-consuming water heater return pipe 7. Its hot water outlet end is connected to the external hot water pipe 8.

[0029] In this embodiment, the control device adopts a highly integrated structural design. It eliminates the complex piping and scattered valve layout required by traditional complementary systems, and integrates the core control valve group into one unit. This not only greatly simplifies the internal structure and reduces the probability of failure of this utility model, but also significantly reduces the overall size of the control device. It can flexibly adapt to narrow installation scenarios such as home balconies and kitchen corners, thereby effectively solving the problems of complicated equipment and limited installation space in traditional multi-heat source hot water systems.

[0030] In addition to the basic manual control mode, users can also add electric actuators, solenoid valves and other automatic control drive facilities to the valves inside the control box 3 according to actual needs, and connect the real-time data such as water temperature and liquid level collected by the reader 23 to the matching automatic control controller.

[0031] Preferably, a reader 23 is provided on the wall of the control box 3.

[0032] In this embodiment, the reader 23 can be a commercially available model, such as the BHLS-113 86 model box reader panel produced by Zhejiang Jiaxing Bihuali Electronic Technology Co., Ltd.

[0033] The reader 23 adopts a built-in installation layout and is integrated into the internal cavity of the control box 3, which effectively avoids the interference of external factors on the stability of equipment operation. At the same time, it optimizes the modular layout of the internal space of the control box 3, improving the compactness and integration of the overall structure of this utility model.

[0034] Meanwhile, the reader 23 has dual core functions. One is the power supply function, which can provide stable and continuous working power for the temperature sensor 21 and the liquid level sensor 22 without the need for an additional independent power supply module, thus simplifying the circuit design of the system. The other is the data receiving, processing and display function, which can collect water temperature data from the temperature sensor 21 and water level data from the liquid level sensor 22 in real time. After being quickly analyzed and converted by the internal chip, the data is clearly presented in intuitive numerical or scale form.

[0035] Through the coordinated implementation of the above functions, the display unit 23 not only provides users with accurate feedback on the real-time operating status of the solar water tank 1, but also provides key data support and decision-making reference for switching operating conditions.

[0036] Preferably, the hot and cold water piping assembly includes an in-tank cold water piping 9, an in-tank hot water piping 10, and a mixing pipe 11. The in-tank cold water piping 9 is used to supply cold water from the external cold water piping 4 to the solar water tank 1 and the energy-consuming water heater 2. The in-tank hot water piping 10 is used to supply hot water from the solar water tank 1 and the energy-consuming water heater 2 to the external hot water piping 8. The mixing pipe 11 is used to pass cold water from the in-tank cold water piping 9 into the in-tank hot water piping 10.

[0037] Preferably, the control valve group includes a three-way switching valve 12, a water supply valve 13, a switching valve 14, and a mixing valve 15.

[0038] In this embodiment, the three-way switching valve 12 can be a commercially available T-type three-way switching valve.

[0039] Preferably, the first end of the three-way switching valve 12 is connected to the solar water supply and return pipeline 5, the second end is connected to the water supply pipeline 6 of the energy-consuming water heater, and the cold water pipeline 9 and the hot water pipeline 10 inside the tank are both connected to its third end. The water supply valve 13 is installed on the cold water pipeline 9 inside the tank, the switch valve 14 is installed at the inlet of the hot water pipeline 10 inside the tank, and the mixing valve 15 is installed on the mixing pipeline 11.

[0040] Preferably, the control box 3 is equipped with a solar water tank interface 16, an energy-consuming water heater supply interface 17, an energy-consuming water heater return interface 18, a cold water pipe interface 19, and a hot water pipe interface 20.

[0041] In this embodiment, the interfaces on the control box 3 adopt a fully compatible and universal architecture at the design level. The reserved energy-consuming water heater supply interface 17 and energy-consuming water heater return interface 18 are not limited to a single device type, but can be flexibly adapted to various household energy-consuming water heaters with single inlet and single outlet interfaces for cold / hot water.

[0042] Specifically, users can directly connect household gas water heaters, biofuel water heaters, electric water heaters, and other energy-consuming water heaters 2 to this device according to their own usage needs and existing equipment, without needing to modify the interfaces on the control box 1 or add any adapter components.

[0043] This universal interface structure breaks down the barriers to device type compatibility, making this invention applicable to all standard pipe structures with single inlet and single outlet for cold / hot water, thus significantly improving the compatibility and practicality of this invention. As a result, users do not need to purchase or modify their existing energy-consuming water heaters, effectively reducing the cost of subsequent equipment upgrades and maintenance.

[0044] Preferably, the solar water tank interface 16 is connected to the first end of the three-way switching valve 12, and is connected to the solar water tank 1 through the solar water supply and return pipeline 5.

[0045] Preferably, the water supply interface 17 of the energy-consuming water heater is connected to the second end of the three-way switching valve 12, and is connected to the water supply end of the energy-consuming water heater 2 through the water supply pipeline 6 of the energy-consuming water heater.

[0046] Preferably, the return water interface 18 of the energy-consuming water heater is connected to the hot water pipe 10 inside the tank, and is connected to the return water end of the energy-consuming water heater 2 through the return water pipe 7 of the energy-consuming water heater.

[0047] Preferably, the external cold water pipe 4 is connected to the inlet of the internal cold water pipe 9 and the mixing pipe 11 via the cold water pipe interface 19, and the external hot water pipe 8 is connected to the outlet of the internal hot water pipe 10 via the hot water pipe interface 20.

[0048] Compared to the traditional complementary system, which requires replanning of existing pipelines and adding complex control valve groups, the integrated control device of this utility model adopts a fully standardized interface setting. All its reserved interfaces are strictly matched with the water supply port, water use port, and inlet / outlet water interfaces of conventional solar water heaters, electric / gas water heaters, and standard specifications on the market.

[0049] In the actual installation process, users do not need to purchase additional adapter parts or hire professionals to carry out complex pipeline modifications. They only need to accurately connect the above-mentioned ports with the corresponding reserved interfaces on the control box 3 to quickly complete the assembly and commissioning of the entire multi-heat source hot water system, which greatly reduces the application threshold and construction cost of multi-heat source complementary hot water systems.

[0050] Preferably, a temperature sensor 21 is installed inside the solar water tank 1, and the temperature sensor 21 is connected to the display 23.

[0051] In this embodiment, the temperature sensor 21 can be a commercially available temperature monitoring element and model.

[0052] Temperature sensor 21 and reader 23 are connected by a wired connection, extending to the external area of ​​control box 3 via a data cable and power supply line. Specifically, the power supply for temperature sensor 21 is provided by reader 23, and the two communicate in real time through a dedicated data transmission link. The temperature data collected by temperature sensor 21 is synchronously uploaded to reader 23, which then parses and processes the data and displays it in a clear digital format on the device panel, allowing users to easily check the system's operating status at any time.

[0053] Regarding the deployment method of the temperature sensor 21, this utility model adopts an installation method adapted to the structure of the solar water tank 1: the temperature sensor 21 is slowly inserted through the exhaust overflow port on the top of the solar water tank 1, allowing it to naturally sink to the bottom area inside the water tank.

[0054] This installation location allows for more accurate monitoring of the real-time temperature of the water stored in the solar water tank 1, providing a reliable temperature basis for subsequent heat source switching and operation control of the system.

[0055] Meanwhile, this installation method does not require any additional opening modifications to the solar water tank 1, which not only preserves the original sealing performance of the water tank, but also simplifies the deployment process of the temperature sensor 21.

[0056] Preferably, a liquid level sensor 22 is installed inside the solar water tank 1, and the liquid level sensor 22 is connected to the display device 23.

[0057] In this embodiment, the liquid level sensor 22 can be a commercially available liquid level monitoring element and model.

[0058] The liquid level sensor 22 and the reader 23 are connected by a wired connection. Their data line and power supply line will extend to the outside of the control box 3 to realize the signal and power transmission between the devices.

[0059] In terms of installation and deployment, the liquid level sensor 22 is inserted into the solar water tank 1 through the vent overflow port on the top of the solar water tank 1.

[0060] Meanwhile, in order to ensure the accuracy of liquid level monitoring, the sensing part of the liquid level sensor 22 should be kept as vertical as possible during installation, and the sensing area at the very end of the liquid level sensor 22 should be as close as possible to the inner bottom of the solar water tank 1.

[0061] This layout can cover the full range of liquid level changes in solar water tank 1 from "low water level" to "full water level", effectively avoiding liquid level data deviation caused by the existence of sensing blind spots, thus providing a more accurate feedback on the actual water storage status inside solar water tank 1.

[0062] In terms of working logic, the power supply of the liquid level sensor 22 is uniformly provided by the reader 23. The liquid level data collected by the liquid level sensor 22 in real time will be synchronously transmitted to the reader 23 through the data line. After receiving the data, the reader 23 will quickly complete the analysis and conversion, and display the current liquid level of the water tank on the panel in an intuitive numerical or scale form, so that users can keep track of the water storage status of the water tank in a timely manner.

[0063] The specific usage process of this utility model is as follows: First, connect the pipes: connect the external cold water pipe 4 and the external hot water pipe 8 to the cold water pipe interface 19 and the hot water pipe interface 20 on the outside of the control box 3, respectively; connect the solar water supply and return water pipe 5 of the solar water tank 1 to the solar water tank interface 16 on the outside of the control box 3; connect the energy-consuming water heater supply pipe 6 and the energy-consuming water heater return water pipe 7 of the energy-consuming water heater 2 to the energy-consuming water heater supply interface 17 and the energy-consuming water heater return interface 18 on the outside of the control box 3, respectively. Next, temperature sensor 21 and liquid level sensor 22 are respectively inserted into the interior of solar water tank 1 through the top exhaust overflow port of solar water tank 1. Temperature sensor 21 is inserted into the bottom of the interior of solar water tank 1, and after liquid level sensor 22 is inserted into solar water tank 1, the liquid level sensing part should be kept as vertical as possible, and its outermost sensing part should be as close as possible to the bottom of the interior of solar water tank 1.

[0064] 1. When the weather is sunny and the solar water tank 1 can provide sufficient heat to the end of the water supply, or when the energy-consuming water heater 2 is in maintenance / power off state, the user can activate the single solar heating mode by adjusting the opening and closing status of each valve in the control box 3.

[0065] like Figure 1 As shown, in single solar heating mode, the status of each valve in the control valve group is as follows: The user adjusts the switch valve 14 to the normally open state and adjusts the three-way switching valve 12 so that the water supply valve 13 is connected to the solar water tank interface 16 and the side connected to the energy-consuming water heater water supply interface 17 is closed. Adjust the water supply valve 13 to the normally closed state. The mixing valve 15 is preset to a certain opening degree based on the temperature inside the solar water tank 1 displayed by the reader 23. When in use, the opening and closing amount (i.e., the amount of cold water mixed) of the mixing valve 15 is manually adjusted to a reasonable range.

[0066] The water supply method under single solar heating mode is as follows: When the display 23 shows that the liquid level in the solar water tank 1 is low and the water terminal valve 24 is closed, the water supply valve 13 is opened. The cold water in the external cold water pipe 4 enters the control box 3 through the cold water pipe interface 19, and enters the solar water tank 1 through the internal cold water pipe 9, water supply valve 13, three-way switching valve 12 and solar water supply and return pipe 5, and starts to supply water to the solar water tank 1. When the display 23 shows that the liquid level is full, manually close the water supply valve 13 to complete the water replenishment process for the solar water tank 1.

[0067] The water usage method under a single solar heating mode is as follows: With the water supply valve 13 closed and the switch valve 14 open, the hot water in the solar water tank 1 located at the top enters the control box 3 through the solar water supply and return pipeline 5 and the solar water tank interface 16. After flowing into the hot water pipeline 10 inside the tank through the three-way switching valve 12, it mixes with the cold water from the mixing valve 15 to complete the mixing and temperature adjustment. The mixed warm water flows through the hot water pipeline interface 20, the external hot water pipeline 8 and the water terminal valve 24 to complete the water use process.

[0068] During the water usage process described above, the mixing valve 15 can be preset to a certain opening degree based on the temperature inside the solar water tank 1 monitored by the temperature sensor 21. After opening the water terminal valve 24, the opening and closing amount of the mixing valve 15 can be manually adjusted according to the outlet water temperature at the terminal to adjust the outlet water temperature to a temperature comfortable for the user.

[0069] 2. When the weather is not sunny enough or the water temperature in the solar water tank 1 is not high enough due to the short water filling time, the user can observe from the display 23 that the water temperature in the solar water tank 1 is lower than the required temperature. The user can then adjust the opening and closing status of each valve to enable the series heating mode of the solar water heater and the energy-consuming water heater 2.

[0070] In this mode, cold water is first heated by the solar water heater and then supplied to the energy-consuming water heater 2 to be heated to the operating temperature, thus completing the hot water supply and reducing the power consumption of the energy-consuming water heater 2, achieving the effect of energy saving.

[0071] like Figure 2 As shown, the status of each valve in the series heating mode of the solar water heater and the energy-consuming water heater 2 is as follows: The user adjusts the switch valve 14 to the normally closed state and adjusts the three-way switching valve 12 to connect the water supply valve 13, the solar water tank interface 16 and the energy-consuming water heater water supply interface 17 on all three sides. The water supply valve 13 and the mixing valve 15 are both normally closed.

[0072] The water supply method under the series heating mode of solar water heater and energy-consuming water heater is as follows: When the display 23 shows a low liquid level and the water terminal valve 24 is closed, the water supply valve 13 is opened, and the cold water in the external cold water pipe 4 enters the control box 3 through the cold water pipe interface 19, and enters the solar water tank 1 through the cold water pipe 9, water supply valve 13, three-way switching valve 12 and solar water supply and return pipe 5, and begins to supply water to the solar water tank 1; When the display 23 shows that the liquid level is full, manually close the water supply valve 13 to complete the water replenishment process for the solar water tank 1.

[0073] The water usage pattern in a series heating system consisting of a solar water heater and two energy-consuming water heaters is as follows: When the water supply valve 13 is closed, when the water terminal valve 24 is opened, the warm water in the solar water tank 1 located at the top enters the control box 3 through the solar water supply and return pipe 5 and the solar water tank interface 16. Then, it is introduced into the energy-consuming water heater 2 through the three-way switching valve 12, the energy-consuming water heater supply interface 17 and the energy-consuming water heater supply pipe 6. After being heated and temperature controlled by the energy-consuming water heater 2, the water temperature reaches the water temperature. Hot water that has reached the water temperature flows back to the control box 3 through the return water pipe 7 and the return water interface 18 of the energy-consuming water heater, and then flows out of the control box 3 through the hot water pipe 10 and the hot water pipe interface 20 inside the box, and finally flows to the end of the water supply through the external hot water pipe 8 to complete the water supply. Similarly, if the water temperature is too high, the user can manually adjust the on / off state of the mixing valve 15 to adjust the water temperature at the end of the water supply to a comfortable temperature for the user.

[0074] 3. When the water in the solar water tank 1 becomes unusable due to weather or solar water heater malfunction and maintenance, the user can switch to the water supply mode of the single-energy-consuming water heater 2 by adjusting the opening and closing status of each valve.

[0075] like Figure 3 As shown, the status of each valve in the water supply mode of the single-energy-consuming water heater 2 is as follows: The user adjusts the switch valve 14 to the normally closed state, adjusts the three-way switching valve 12 to connect the water supply valve 13 to both sides of the water supply interface 17 of the energy-consuming water heater, and the side leading to the solar water tank interface 16 is closed. The water supply valve 13 is normally open, and the mixing valve 15 is normally closed.

[0076] The water supply and usage methods under the single-energy-consuming water heater's 2-water supply mode are as follows: When the water terminal valve 24 is opened, the cold water in the external cold water pipe 4 enters the control box 3 through the cold water pipe interface 19, and enters the energy-consuming water heater 2 through the cold water pipe 9, three-way switching valve 12, energy-consuming water heater supply interface 17 and energy-consuming water heater supply pipe 6 inside the box, thus completing the water supply to the energy-consuming water heater 2. The energy-consuming water heater 2 senses the water flow and starts the heating process. After the cold water flows through the energy-consuming water heater 2 and is heated to the set temperature, it flows back to the control box 3 through the energy-consuming water heater return pipe 7 and the energy-consuming water heater return interface 18. Then it flows out of the control box 3 through the hot water pipe 10 and the hot water pipe interface 20 inside the box, and finally flows to the end of the water consumption through the external hot water pipe 8 to complete the water consumption. Similarly, if the water temperature is too high, the user can manually adjust the on / off state of the mixing valve 15 to adjust the water temperature at the end of the water supply to a comfortable temperature for the user.

[0077] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated control device for a dual hot water system, comprising a control box (3) connected to a solar water tank (1) and an energy-consuming water heater (2), characterized in that, The control box (3) is equipped with a hot and cold water pipeline group and a control valve group. The control valve group is used to control the opening and closing of each part of the hot water pipeline group. The cold water inlet of the hot and cold water pipeline group is connected to the external cold water pipeline (4). The first connection end of the hot and cold water pipeline group is connected to the inlet and outlet ports of the solar water tank (1) through the solar water supply and return pipeline (5). Its second connection end is connected to the cold water port of the energy-consuming water heater (2) through the energy-consuming water heater supply pipeline (6). Its third connection end is connected to the hot water port of the energy-consuming water heater (2) through the energy-consuming water heater return pipeline (7). Its hot water outlet end is connected to the external hot water pipeline (8). A reader (23) is installed on the wall of the control box (3).

2. The integrated control device for a dual hot water system according to claim 1, characterized in that, The hot and cold water piping system includes an in-tank cold water piping (9), an in-tank hot water piping (10), and a mixing pipe (11). The in-tank cold water piping (9) is used to supply cold water from the external cold water piping (4) to the solar water tank (1) and the energy-consuming water heater (2). The in-tank hot water piping (10) is used to supply hot water from the solar water tank (1) and the energy-consuming water heater (2) to the external hot water piping (8). The mixing pipe (11) is used to pass cold water from the in-tank cold water piping (9) into the in-tank hot water piping (10).

3. The integrated control device for a dual hot water system according to claim 2, characterized in that, The control valve group includes a three-way switching valve (12), a water supply valve (13), a switch valve (14), and a mixing valve (15). The first end of the three-way switching valve (12) is connected to the solar water supply and return pipeline (5), and its second end is connected to the water supply pipeline (6) of the energy-consuming water heater. The cold water pipeline (9) and the hot water pipeline (10) inside the tank are both connected to its third end. The water supply valve (13) is installed on the cold water pipeline (9) inside the tank, the switch valve (14) is installed at the inlet of the hot water pipeline (10) inside the tank, and the mixing valve (15) is installed on the mixing pipeline (11).

4. The integrated control device for a dual hot water system according to claim 2, characterized in that, The control box (3) is equipped with a solar water tank interface (16), an energy-consuming water heater supply interface (17), an energy-consuming water heater return interface (18), a cold water pipe interface (19), and a hot water pipe interface (20).

5. The integrated control device for a dual hot water system according to claim 4, characterized in that, The solar water tank interface (16) is connected to the first end of the three-way switching valve (12) and is connected to the solar water tank (1) through the solar water supply and return pipeline (5).

6. The integrated control device for a dual hot water system according to claim 4, characterized in that, The water supply interface (17) of the energy-consuming water heater is connected to the second end of the three-way switching valve (12), and is connected to the water supply end of the energy-consuming water heater (2) through the water supply pipeline (6).

7. An integrated control device for a dual hot water system according to claim 4, characterized in that, The return water interface (18) of the energy-consuming water heater is connected to the hot water pipe (10) inside the tank, and is connected to the return water end of the energy-consuming water heater (2) through the return water pipe (7).

8. The integrated control device for a dual hot water system according to claim 4, characterized in that, The external cold water pipe (4) is connected to the inlet of the cold water pipe (9) and the mixing pipe (11) inside the tank through the cold water pipe interface (19), and the external hot water pipe (8) is connected to the outlet of the hot water pipe (10) inside the tank through the hot water pipe interface (20).

9. An integrated control device for a dual hot water system according to any one of claims 1-8, characterized in that, The solar water tank (1) is equipped with a temperature sensor (21), which is connected to a display (23).

10. An integrated control device for a dual hot water system according to any one of claims 1-8, characterized in that, The solar water tank (1) is equipped with a liquid level sensor (22), which is connected to a display (23).

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