Central domestic hot water energy-saving control method and system

Abstract

The invention discloses a central domestic hot water energy-saving control method and system, and relates to the technical field of hot water energy-saving control methods.The central domestic hot water energy-saving control method comprises the steps that S1, a self-locking countdown mutual inductance device is adopted to send a starting signal to a controller, and the controller controls the running time of a water pump of a central hot water system according to the time period set by a user; s2, based on a time period set by a user, a point contact type switch is adopted to start a water pump, the water pump runs for 6-15 minutes, cold water retained in the hot water pipe is circulated back to the water storage tank, and the water temperature of the pipeline is increased; s3, after the set running time is up, the water pump automatically stops running, subsequent hot water supply depends on municipal water pressure conveying, and energy consumption and equipment loss are reduced; by adopting the self-locking countdown mutual inductance device, accurate control over the operation time of the water pump is achieved, the hot water system can automatically circulate hot water in off-peak periods, energy consumption caused by all-weather operation is reduced, the operation process of a user is simplified through the design mode, and use convenience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hot water energy-saving control methods, and in particular to a central domestic hot water energy-saving control method and system. Background Art

[0002] Central domestic hot water energy-saving control methods are technologies that optimize the operation of central hot water systems through intelligent means. They aim to improve hot water supply efficiency, reduce energy consumption, minimize equipment wear, and enhance user experience. Therefore, leveraging advanced technologies to enhance the intelligence and safety of these methods has become a pressing issue.

[0003] In the field of hot water energy-saving control methods, traditional central hot water systems run around the clock to ensure hot water is available at all times, resulting in a large amount of unnecessary energy consumption. Due to the lack of intelligent control, water pumps and other heating equipment are often in a state of frequent start and stop, which accelerates the aging and damage of the equipment. At the same time, when used during non-peak hours, users need to wait a long time to obtain the appropriate hot water temperature. Summary of the Invention

[0004] In view of the above existing problems, the present invention is proposed.

[0005] Therefore, the present invention provides a central domestic hot water energy-saving control method to solve the problem that traditional central hot water systems run around the clock to ensure hot water supply at any time, resulting in a large amount of unnecessary energy consumption. Due to the lack of intelligent control, water pumps and other heating equipment are often in a frequent start and stop state, which accelerates the aging and damage of the equipment. At the same time, when used during non-peak hours, users need to wait for a long time to obtain the appropriate hot water temperature.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] In a first aspect, the present invention provides a central domestic hot water energy-saving control method, comprising:

[0008] S1. A self-locking countdown mutual induction device is used to send a start signal to a controller, and the controller controls the operation time of the central hot water system pump according to the time period set by the user;

[0009] S2. According to the operation time set in step S1, the water pump is started using a touch switch and operated for 6 to 15 minutes to circulate the cold water retained in the hot water pipe back to the water storage tank and increase the water temperature in the pipe;

[0010] S3. After the running time set in step S2 is reached, the water pump automatically stops running, and the subsequent hot water supply relies on municipal water pressure to reduce energy consumption and equipment loss.

[0011] As a preferred solution of the central domestic hot water energy-saving control method of the present invention, the controller is connected to the mains through a three-pin plug and connected to the water pump power line of the original hot water system to achieve plug-and-play installation.

[0012] As a preferred solution of the central domestic hot water energy-saving control method of the present invention, wherein: the touch operation of the touch switch and the start and stop of the water pump are both executed by the internal circuit logic of the controller;

[0013] The touch switch adopts a waterproof design and is installed on the wall of each water point. It is connected to the controller through a low-voltage signal line. Once triggered, it can keep the water pump running until the set time ends without continuous pressing.

[0014] The water points include the master bedroom bathroom, second bedroom bathroom, guest bedroom bathroom, kitchen and other water points.

[0015] As a preferred solution of the central domestic hot water energy-saving control method described in the present invention, the water storage tank temperature is set to 45°C, and the controller monitors the water temperature of the return pipe. When it is detected that the water temperature is lower than the set threshold, the gas boiler is automatically started for heating.

[0016] As a preferred solution of the central domestic hot water energy-saving control method described in the present invention, the water pump is a low-power variable-frequency water pump, and the start, stop and speed are dynamically adjusted by the controller according to the demand of the water use point to reduce energy consumption and operating noise.

[0017] As a preferred solution of the central domestic hot water energy-saving control method described in the present invention, the controller controls the water pump operation time through a built-in delay relay module, and the delay range is adjustable from 6 to 15 minutes to adapt to the hot water circulation requirements of different pipe lengths. The controller is equipped with a wireless communication module, which supports users to remotely set the water pump operation time, water temperature threshold and real-time monitoring system status through a mobile terminal.

[0018] As a preferred solution of the central domestic hot water energy-saving control method of the present invention, the dynamic adjustment of the water pump speed is as follows:

[0019] When any water point touch switch is triggered, the controller detects the current pipeline water pressure P and the set reference water pressure P set The difference is expressed as:

[0020] ΔP=|PP set |;

[0021] like The controller adjusts the pump speed N proportionally to satisfy:

[0022] N=Nmin +K·ΔP;

[0023] Among them, N min is the minimum speed of the water pump, K is the proportional coefficient;

[0024] When multiple water points are triggered simultaneously, the controller adjusts the speed based on the maximum ΔP;

[0025] The running time of the water pump is subject to the delay control in step S1 and stops automatically after the set time is reached.

[0026] In a second aspect, the present invention provides a central domestic hot water energy-saving control system, comprising:

[0027] Control module, water pump drive module, temperature monitoring module, wireless communication module and touch switch module;

[0028] The control module is used to receive the touch switch signal, set the water pump operation time, dynamically adjust the water pump speed, and control the start and stop of the gas boiler;

[0029] The water pump drive module is used to drive the variable frequency water pump to run at a set speed to achieve hot water circulation and energy saving;

[0030] The temperature monitoring module is used to detect the water temperature of the return pipe and trigger the gas boiler to heat to maintain the set temperature;

[0031] The wireless communication module is used to remotely configure parameters and monitor system status;

[0032] The touch switch module is used by the user to trigger the operation of the water pump, adopts a waterproof design and supports self-locking signal transmission.

[0033] In a third aspect, the present invention provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: when the computer program is executed by the processor, any step of the central domestic hot water energy-saving control method as described in the first aspect of the present invention is implemented.

[0034] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein: when the computer program is executed by a processor, any step of the central domestic hot water energy-saving control method as described in the first aspect of the present invention is implemented.

[0035] The beneficial effects of the present invention are as follows: by adopting a self-locking countdown mutual inductance device, precise control of the water pump operation time is achieved, so that the hot water system can automatically circulate hot water during non-peak hours, reducing the energy consumption caused by round-the-clock operation. The design method simplifies the user's operating process, improves the convenience of use, and achieves the purpose of saving energy and improving user experience. By using a touch switch and combining the controller logic to execute the water pump start and stop, it achieves a quick response to user needs while ensuring the immediacy and stability of hot water supply. The mechanism not only reduces the waste of water resources caused by long waiting times for hot water, but also improves household water use efficiency, achieving the effect of reducing energy consumption and improving living comfort. By setting the ideal temperature of the water storage tank and monitoring the return water pipe water temperature in real time through the controller, effective management of the hot water supply temperature is achieved, which not only ensures that users can obtain hot water of the required temperature at any time, but also reduces energy waste caused by overheating through intelligent regulation, while also ensuring the stability and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 This is a flow chart of the central domestic hot water energy-saving control method in Example 1.

[0038] Figure 2 This is the architecture diagram of the central domestic hot water energy-saving control system in Example 1.

[0039] Figure 3 This is a schematic diagram of the temperature control logic in Example 1.

[0040] Figure 4 This is the system topology diagram with energy flow in Example 1.

[0041] Figure 5 This is a schematic diagram of the fault diagnosis status in Example 1. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0044] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0045] Example 1, with reference to Figures 1 to 5 , which is the first embodiment of the present invention, provides a central domestic hot water energy-saving control method, comprising the following steps:

[0046] S1. A self-locking countdown mutual induction device is used to send a start signal to the controller, which controls the running time of the central hot water system pump according to the time period set by the user;

[0047] Furthermore, the controller is connected to the mains electricity through a three-pin plug and connected to the water pump power line of the original hot water system, realizing plug-and-play installation;

[0048] It should be noted that the controller is connected to the mains power supply through a standard three-pin plug and directly connected to the water pump power cord of the original hot water system. This not only simplifies the installation process and improves the plug-and-play performance of the product, but also avoids large-scale modifications to the original system structure. The design is particularly suitable for upgrading existing residential hot water systems. Energy-saving control functions can be achieved without wiring changes, and it has good marketability and user adaptability.

[0049] S2. Based on the time period set by the user, the water pump is started using a touch switch and runs for 6 to 15 minutes to circulate the cold water trapped in the hot water pipe back to the water storage tank and increase the water temperature in the pipe;

[0050] Furthermore, the touch operation of the touch switch and the start and stop of the water pump are both executed by the controller's internal circuit logic;

[0051] The touch switch adopts a waterproof design and is installed on the wall of each water point. It is connected to the controller through a low-voltage signal line. Once triggered, it can keep the water pump running until the set time ends without continuous pressing.

[0052] Various water points include master bedroom bathroom, second bedroom bathroom, guest bedroom bathroom, kitchen and other water points;

[0053] The water tank temperature is set at 45°C, and the controller monitors the water temperature in the return pipe. When the water temperature is detected to be lower than the set threshold, the gas boiler is automatically started for heating.

[0054] It should be noted that the touch switch adopts a waterproof structure and is installed on the wall of each water point, which can effectively prevent short circuits or misoperations caused by water vapor intrusion, ensuring the safety and stability of user use; at the same time, it communicates with the controller through a low-voltage signal line, reducing wiring complexity and safety hazards. In addition, the water tank temperature is set at 45°C, which is an optimized choice that takes into account both energy-saving effects and comfortable experience. It can effectively inhibit bacterial growth and avoid energy waste caused by high-temperature heating, which is in line with modern family health and environmental protection concepts.

[0055] S3. When the set running time is reached, the water pump automatically stops running, and the subsequent hot water supply relies on municipal water pressure, reducing energy consumption and equipment loss;

[0056] Furthermore, the water pump is a low-power variable-frequency water pump, and the start and stop and speed are dynamically adjusted by the controller according to the demand of the water point to reduce energy consumption and operating noise;

[0057] The controller uses a built-in delay relay module to control the water pump operation time. The delay range is adjustable from 6 to 15 minutes to meet the hot water circulation requirements of different pipe lengths. The controller is equipped with a wireless communication module, allowing users to remotely set the water pump operation time, water temperature threshold, and monitor the system status in real time through a mobile terminal.

[0058] Dynamically adjust the pump speed as follows:

[0059] When any water point touch switch is triggered, the controller detects the current pipeline water pressure P and the set reference water pressure P set The difference is expressed as:

[0060] ΔP=|PP set |;

[0061] like The controller adjusts the pump speed N proportionally to satisfy:

[0062] N=N min +K·ΔP;

[0063] Among them, N min is the minimum speed of the water pump, K is the proportional coefficient;

[0064] When multiple water points are triggered simultaneously, the controller adjusts the speed based on the maximum ΔP;

[0065] The running time of the water pump is subject to the delay control in step S1 and it stops automatically after the set time is reached;

[0066] It should be noted that the low-power variable-frequency water pump can dynamically adjust its speed based on actual demand under different load conditions, significantly reducing energy consumption and noise levels during no-load operation, improving the system's overall energy efficiency and user comfort. The controller's built-in delay relay module supports operating time adjustment within a range of 6 to 15 minutes, flexibly adapting to the varying lengths of hot water circulation pipes in different household types, enhancing the system's versatility and practicality. The wireless communication module further expands the system's intelligent management capabilities, allowing users to remotely set operating parameters and monitor system status via mobile devices, meeting the development trend of modern smart homes. The water pump speed adjustment logic uses proportional control based on the difference between the current pipeline water pressure and a baseline pressure, achieving adaptive matching of water supply pressure and ensuring stable hot water output when triggered at different water points. When multiple touch switches are triggered simultaneously, the controller uses the maximum water pressure difference as a reference for unified adjustment, thereby avoiding unstable hot water supply caused by insufficient local pressure. This mechanism not only ensures system response speed, but also effectively controls the water pump's energy consumption and noise, demonstrating the technical advantages of combining intelligent control with energy saving and noise reduction.

[0067] This embodiment also provides a central domestic hot water energy-saving control system, including:

[0068] Control module, water pump drive module, temperature monitoring module, wireless communication module and touch switch module;

[0069] The control module is used to receive the touch switch signal, set the water pump operation time, dynamically adjust the water pump speed, and control the start and stop of the gas boiler;

[0070] The water pump drive module is used to drive the variable frequency water pump to run at the set speed to achieve hot water circulation and energy saving and noise reduction;

[0071] Temperature monitoring module, used to detect the water temperature of the return pipe and trigger the gas boiler to heat to maintain the set temperature;

[0072] Wireless communication module, used for remote configuration of parameters and monitoring of system status;

[0073] The touch switch module is used by the user to trigger the water pump operation. It adopts a waterproof design and supports self-locking signal transmission.

[0074] This embodiment also provides a computer device suitable for the central domestic hot water energy-saving control method, including: a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute computer-executable instructions to implement the central domestic hot water energy-saving control method proposed in the above embodiment.

[0075] The computer device may be a terminal, comprising a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device comprises a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner may be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. The display screen of the computer device may be a liquid crystal display or an electronic ink display screen, and the input device of the computer device may be a touch layer covering the display screen, or a button, trackball or touchpad provided on the housing of the computer device, or an external keyboard, touchpad or mouse.

[0076] This embodiment also provides a storage medium having a computer program stored thereon, which, when executed by a processor, implements the central domestic hot water energy-saving control method proposed in the above embodiment; the storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0077] In summary, the present invention achieves precise control of the water pump running time by adopting a self-locking countdown mutual inductance device, so that the hot water system can automatically circulate hot water during non-peak hours, reducing the energy consumption caused by round-the-clock operation. The design method simplifies the user's operating process, improves the convenience of use, and achieves the purpose of saving energy and improving user experience. By using a touch-type switch and combining the controller logic to start and stop the water pump, it achieves a quick response to user needs while ensuring the immediacy and stability of hot water supply. The mechanism not only reduces the waste of water resources caused by long waiting times for hot water, but also improves household water use efficiency, achieving the effect of reducing energy consumption and improving living comfort. By setting the ideal temperature of the water tank and monitoring the return water pipe water temperature in real time through the controller, effective management of the hot water supply temperature is achieved, which not only ensures that users can obtain hot water of the required temperature at any time, but also reduces energy waste caused by overheating through intelligent regulation, while also ensuring the stability and reliability of the system.

[0078] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A central domestic hot water energy-saving control method, characterized in that: include: S1. A self-locking countdown mutual induction device is used to send a start signal to a controller, and the controller controls the operation time of the central hot water system pump according to the time period set by the user; S2. Based on the time period set by the user, the water pump is started using a touch switch and operated for 6 to 15 minutes to circulate the cold water retained in the hot water pipe back to the water storage tank and increase the water temperature in the pipe; S3. When the set running time is reached, the water pump automatically stops running, and the subsequent hot water supply relies on municipal water pressure to reduce energy consumption and equipment loss.

2. The central domestic hot water energy-saving control method according to claim 1, characterized in that: The controller is connected to the mains electricity through a three-pin plug and is connected to the water pump power line of the original hot water system to achieve plug-and-play installation.

3. The central domestic hot water energy-saving control method according to claim 2, characterized in that: The touch operation of the touch switch and the start and stop of the water pump are both executed by the internal circuit logic of the controller; The touch switch adopts a waterproof design and is installed on the wall of each water point. It is connected to the controller through a low-voltage signal line. Once triggered, it can keep the water pump running until the set time ends without continuous pressing. The water points include the master bedroom bathroom, second bedroom bathroom, guest bedroom bathroom, kitchen and other water points.

4. The central domestic hot water energy-saving control method according to claim 3, characterized in that: The temperature of the water storage tank is set to 45°C, and the controller monitors the water temperature of the return pipe. When it is detected that the water temperature is lower than the set threshold, the gas boiler is automatically started for heating.

5. The central domestic hot water energy-saving control method according to claim 4, characterized in that: The water pump is a low-power variable-frequency water pump, and the start, stop and speed are dynamically adjusted by the controller according to the demand of the water use point to reduce energy consumption and operating noise.

6. The central domestic hot water energy-saving control method according to claim 5, characterized in that: The controller controls the water pump operating time through a built-in delay relay module. The delay range is adjustable from 6 to 15 minutes to adapt to the hot water circulation requirements of different pipe lengths. The controller is equipped with a wireless communication module, which supports users to remotely set the water pump operating time, water temperature threshold and real-time monitoring of the system status through a mobile terminal.

7. The central domestic hot water energy-saving control method according to claim 6, characterized in that: The dynamic adjustment of the water pump speed is as follows: When any water point touch switch is triggered, the controller detects the current pipeline water pressure P and the set reference water pressure P set The difference is expressed as: like The controller adjusts the pump speed N proportionally to satisfy: N=N min +K·ΔP; Among them, N min is the minimum speed of the water pump, K is the proportional coefficient; When multiple water points are triggered simultaneously, the controller adjusts the speed based on the maximum ΔP; The running time of the water pump is subject to the delay control in step S1 and stops automatically after the set time is reached.

8. A central domestic hot water energy-saving control system, based on the central domestic hot water energy-saving control method according to any one of claims 1 to 7, characterized in that: include: Control module, water pump drive module, temperature monitoring module, wireless communication module and touch switch module; The control module is used to receive the touch switch signal, set the water pump operation time, dynamically adjust the water pump speed, and control the start and stop of the gas boiler; The water pump drive module is used to drive the variable frequency water pump to run at a set speed to achieve hot water circulation and energy saving; The temperature monitoring module is used to detect the water temperature of the return pipe and trigger the gas boiler to heat to maintain the set temperature; The wireless communication module is used to remotely configure parameters and monitor system status; The touch switch module is used by the user to trigger the operation of the water pump, adopts a waterproof design and supports self-locking signal transmission.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the central domestic hot water energy-saving control method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the central domestic hot water energy-saving control method according to any one of claims 1 to 7 are implemented.

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