Intelligent hot water circulating pump system based on radio frequency control

Abstract

The invention discloses an intelligent hot water circulating pump system based on radio frequency control in the technical field of intelligent home and building energy-saving control, which comprises a circulating module, a sensing module, a control module and a plurality of sub-control modules, and the circulating module comprises a circulating pump. The radio frequency communication modules of the sub-control modules are in independent wireless connection with the radio frequency receiving and transmitting module, remote communication control is achieved, the circulating pump is controlled through the pump body driving module in the control module, wireless communication between the sub-control modules and the circulating pump is achieved, and in the using process, when the sub-control modules are triggered by a user, the wireless communication between the sub-control modules and the circulating pump is achieved. When a user triggers the branch control module, the circulating pump is started, when the user does not trigger the branch control module, operation of the circulating pump is stopped, circulation of the hot fluid is stopped, an intelligent hierarchical control module in the control module can control the output power of the circulating pump according to the number of opened branch pipes, intelligent adaptive adjustment is achieved, power output of the circulating pump is reduced, and overall energy input of the system is reduced.

Description

Technical Field

[0001] This invention relates to the field of smart home and building energy-saving control technology, specifically a smart hot water circulation pump system based on radio frequency control. Background Technology

[0002] Hot water circulation systems can effectively improve the convenience of hot water use and energy efficiency. By optimizing pipe design and circulation logic, the system can quickly provide hot water when needed, while reducing water waste.

[0003] However, existing traditional hot water circulation systems mostly use constant temperature circulation or simple timer control, which have problems such as high energy consumption, inflexible control, and inability to achieve independent control of multiple areas, resulting in poor performance. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent hot water circulation pump system based on radio frequency control, in order to solve the problems mentioned above, which mainly use constant temperature circulation or simple timer control, resulting in high energy consumption, inflexible control, and inability to achieve independent control of multiple areas.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A radio frequency controlled intelligent hot water circulation pump system includes: The circulation module includes a circulation pump, the inlet of which is connected to a water guide pipe, the water guide pipe is connected to an inlet pipe, the outlet of which is connected to a heater, the outlet of which is connected to a hot water pipe, the inlet pipe and the hot water pipe are both connected to multiple branch pipes and connected to the water-using end, a return flow component is connected between the hot water pipe and the water guide pipe, the return flow component is used for unidirectional thermal circulation of the fluid, and the heater is used for heating the fluid and controlling the temperature. A sensing module, which is connected to the circulation module, is used to monitor the flow rate of the circulating fluid and generate a sensing signal. The control module is electrically connected to the circulation module and the sensing module. The control module is used to receive sensing signals and control the circulation pump to adjust the flow rate of the circulating fluid. Several sub-control modules are provided, each sub-control module is wirelessly connected to a control module, and each sub-control module has a built-in radio frequency communication module, which is used to wirelessly connect to the control module to control fluid flow.

[0006] As a further aspect of the present invention: the return component includes a return water pipe, one end of which is connected to the tail end of the hot water pipe, and the other end of which is connected to a water guide pipe and is equipped with a one-way valve. The return water pipe is used for one-way fluid return.

[0007] As a further aspect of the present invention: the sensing module includes a flow sensor, which is connected to the water pipe and is used to detect the flow rate of fluid in the water pipe and generate a sensing signal.

[0008] As a further aspect of the present invention: the control module includes a radio frequency transceiver module, an intelligent hierarchical control module, and a pump body drive module that are electrically connected in sequence, and the radio frequency transceiver module, the intelligent hierarchical control module, and the pump body drive module are all electrically connected to a power supply module; The radio frequency transceiver module has several preset communication channels. The radio frequency transceiver module and the sub-control module have built-in radio frequency communication modules that are set as nodes. Each node periodically scans all preset channels and calculates the channel quality index (CQI). ; Where i is the current node, For normalized signal-to-noise ratio, This represents the ratio of channel idle time. For historical communication success rate, , and These are weighting coefficients. , and The sum is 1; The radio frequency transceiver module collects the channel quality index (CQI) of each node and transmits it to the intelligent hierarchical control module. The intelligent hierarchical control module selects the communication channel with the highest CQI as the current working channel.

[0009] As a further aspect of the present invention: the intelligent hierarchical control module constructs a power output relationship between the output power of the circulating pump and the number of branch pipes opened on the hot water pipe; ; Where m represents the number of branch pipes opened on the hot water pipe. For output power, Where n is the rated output power of the circulating pump, and n is the total number of branch pipes on the hot water pipe. This is a dynamic coefficient related to the pipeline resistance characteristics and pump operating point. The fixed loss factor; The intelligent hierarchical control module transmits a power control signal to the pump body drive module according to the current output power. The pump body drive module controls the circulating pump to output the corresponding power according to the power control signal. The circulating pump is a variable frequency speed control pump.

[0010] As a further aspect of the present invention: the sub-control module further includes an AC / DC conversion module, which is electrically connected to the radio frequency communication module and is used to power the radio frequency communication module.

[0011] As a further aspect of the present invention: the sub-control module has a built-in display module, which is electrically connected to the AC / DC conversion module and the radio frequency communication module. The display module is used to display the operating parameters of the circulating pump in real time, including output power, operating frequency and running time.

[0012] As a further aspect of the present invention: the display module is electrically connected to the alarm module, and the alarm module is used for abnormal alarms.

[0013] As a further aspect of the present invention: the radio frequency communication module is electrically connected to the timing cycle module, and the timing cycle module is used to set the fluid circulation time in the return water pipe.

[0014] As a further aspect of the present invention: the sub-control module is connected to the mounting body, and the mounting body is used for wall installation.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention achieves long-distance communication control through independent wireless connections between the radio frequency communication modules and radio frequency transceiver modules of several sub-control modules. Furthermore, the pump drive module within the control module controls the circulating pump, enabling wireless communication between the sub-control modules and the circulating pump. During operation, the sub-control modules start the circulating pump upon user triggering. During operation, the return pipe draws fluid from the furthest end of the hot water pipe back to the guide pipe, where it is heated by the heater and circulated back into the hot water pipe. When the user does not trigger the sub-control modules, they can set the circulation time of the circulating pump, after which the pump stops running, thus stopping the circulation of the hot fluid and avoiding the continuous energy consumption of traditional constant temperature systems. Moreover, the intelligent hierarchical control module within the control module can control the output power of the circulating pump based on the number of branch pipes open, achieving intelligent adaptive adjustment, reducing the power output of the circulating pump, reducing the overall energy input of the system, resulting in greater energy savings and better performance.

[0016] 2. This invention uses a star network topology formed by the radio frequency transceiver module and the radio frequency communication module built into the sub-control module. Each node has a unique and independent address. All nodes independently monitor the channel quality of their location, collect the channel quality index of each node, and upload the results to the sub-control module for processing. The working channel allocation strategy of each node is dynamically adjusted to ensure the communication efficiency and stability of the overall network, avoid signal interference, and ensure the safety and reliability of control commands. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the system connection of the present invention; Figure 2 This is a schematic diagram of the connection of the circulating pump of the present invention; Figure 3 This is a schematic diagram of the control module connection of the present invention.

[0018] In the diagram: 1. Circulation module; 11. Circulation pump; 12. Water guide pipe; 13. Inlet pipe; 14. Return pipe; 15. Branch pipe; 16. Hot water pipe; 17. Water user end; 18. Check valve; 19. Heater; 2. Sensing module; 21. Flow sensor; 3. Control module; 31. RF transceiver module; 32. Intelligent hierarchical control module; 33. Pump drive module; 34. Power supply module; 4. Sub-control module; 41. RF communication module; 42. AC / DC conversion module; 43. Display module; 44. Alarm module; 45. Timed cycle module. Detailed Implementation

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

[0020] Example: Please see Figures 1-3 This embodiment provides an intelligent hot water circulation pump system based on radio frequency control, including a circulation module 1, a sensing module 2, a control module 3, and several sub-control modules 4. The sub-control modules 4 are installed between each bathroom or on the side of the water-using end 17 requiring hot water. The water-using end 17 includes kitchen water, public bathroom water, secondary bathroom water, and main bathroom water, etc. The inlet of the circulation pump 11 is connected to a water guide pipe 12, the water guide pipe 12 is connected to an inlet pipe 13, and the outlet of the circulation pump 11 is connected to a heater 19. The outlet of 9 is connected to the hot water pipe 16. The inlet pipe 13 and the hot water pipe 16 are both connected to multiple branch pipes 15 and connected to the water outlet 17. A return component is connected between the hot water pipe 16 and the water guide pipe 12. The return component is used for unidirectional heat circulation of the fluid. The heater 19 is used to heat the fluid and control the temperature. The return component includes a return pipe 14. One end of the return pipe 14 is connected to the tail end of the hot water pipe 16, and the other end of the return pipe 14 is connected to the water guide pipe 12. A one-way valve 18 is installed. The return pipe 14 is used for unidirectional fluid return. Sensing module 2 is connected to circulation module 1. Sensing module 2 is used to monitor the flow rate of the circulating fluid and generate a sensing signal. Sensing module 2 includes flow sensor 21, which is connected to water pipe 12. Flow sensor 21 is used to detect the flow rate of the fluid in water pipe 12 and generate a sensing signal. Among them, flow sensor 21 is a miniature impeller. The miniature impeller is driven to rotate by the fluid. Its rotation speed is proportional to the fluid flow rate, thereby realizing real-time monitoring of the flow rate. The miniature impeller has a compact structure, is easy to install, and will not significantly obstruct the normal flow of the fluid in water pipe 12, ensuring the high efficiency and reliability of the system operation.

[0021] The control module 3 is electrically connected to the circulation module 1 and the sensing module 2. The control module 3 is used to receive sensing signals and control the circulation pump 11 to adjust the flow rate of the circulating fluid. The sub-control module 4 is wirelessly connected to the control module 3. The sub-control module 4 has a built-in radio frequency communication module 41, which is used to wirelessly connect to the control module 3 to control fluid flow.

[0022] Specifically, this invention achieves long-distance communication control by independently wirelessly connecting the radio frequency communication module 41 of several sub-control modules 4 with the radio frequency transceiver module 31. Furthermore, the circulation pump 11 is controlled by the pump drive module 33 in the control module 3, enabling wireless communication between the sub-control modules 4 and the circulation pump 11. During use, the sub-control modules 4 start the circulation pump 11 upon user triggering. When the circulation pump 11 is running, the return water pipe 14 returns the fluid from the furthest end of the hot water pipe 16 to the guide pipe 12, where it is heated by the heater 19 and circulated back into the hot water pipe 16. When the user does not trigger the sub-control modules 4, the user can set the circulation time of the circulation pump 11, and after the set time, the circulation pump 11 will stop running. This stops the circulation of hot fluid, preventing continuous energy consumption in traditional constant temperature systems. The one-way valve 18 on the return pipe 14 allows the fluid to flow in one direction, preventing backflow during circulation. This ensures that hot water can only flow from the far end of the hot water pipe 16 through the return pipe 14 to the guide pipe 12, preventing heated hot water from flowing back to unused branch pipes 15 or the end of the pipe. This avoids localized temperature drops and energy losses caused by backflow. Furthermore, the intelligent hierarchical control module 32 in the control module 3 can control the output power of the circulation pump 11 according to the number of branch pipes 15 opened on the hot water pipe 16, achieving intelligent adaptive adjustment, reducing the power output of the circulation pump 11, reducing the overall energy input of the system, making it more energy-efficient and effective.

[0023] In this embodiment, as Figure 3 As shown, the control module 3 includes a radio frequency transceiver module 31, an intelligent hierarchical control module 32, and a pump body drive module 33 that are connected in sequence. The radio frequency transceiver module 31, the intelligent hierarchical control module 32, and the pump body drive module 33 are all electrically connected to the power supply module 34. The RF transceiver module 31 has several pre-set communication channels. Both the RF transceiver module 31 and the built-in RF communication module 41 of the sub-control module 4 are configured as nodes, forming a star network topology. Each node has a unique and independent address. All nodes independently monitor the channel quality at their location. The RF transceiver module 31 uses chips such as SX1278 / SX1268 / LLCC68, and has N pre-set available channels (e.g., 10 channels in the range of 433.0-434.8MHz with 0.2MHz intervals). For the i-th channel, the following evaluation metrics are defined: Instantaneous signal-to-noise ratio (SNR): in, For the desired signal power, For background noise power, After normalization, we get = ; Channel idle time ratio: ; In the sliding time window The proportion of time the channel is not occupied within (e.g., 10 seconds); Historical communication success rate: ; in, The forgetting factor (e.g., 0.9). This indicates whether the communication was successful (1 for success, 0 for failure). Each node periodically scans all preset channels and calculates the Channel Quality Index (CQI). ; Where i is the current node, Normalized signal-to-noise ratio (used to reflect signal strength and noise level). This is the channel idle time ratio (used to reflect the channel occupancy level). Historical communication success rate (used to reflect channel stability). , and These are weighting coefficients. , and The sum is 1; The radio frequency transceiver module 31 collects the channel quality index (CQI) of each node, selects the channel with the highest CQI among a number of preset communication channels as the current working channel, and each node prioritizes the channel with the highest CQI; if a co-channel conflict is detected, some nodes automatically switch to the suboptimal channel to achieve distributed optimization.

[0024] Specifically, the radio frequency transceiver module 31 and the sub-control module 4, which has a built-in radio frequency communication module 41, form a star network topology. Each node has a unique and independent address. All nodes independently monitor the channel quality of their respective locations, collect the channel quality index of each node, and upload the results to the sub-control module 4 for processing. The working channel allocation strategy of each node is dynamically adjusted to ensure the communication efficiency and stability of the overall network, avoid signal interference, and ensure the safety and reliability of control commands.

[0025] In this embodiment, the intelligent hierarchical control module 32 constructs a power output relationship between the output power of the circulating pump 11 and the number of branch pipes 15 opened on the hot water pipe 16. ; Where m represents the number of branch pipes 15 opened on hot water pipe 16. The current output power (W) of the circulating pump 11 when m branch pipes 15 are turned on. Where n is the rated output power (W) of the circulating pump 11, and n is the total number of branch pipes 15 on the hot water pipe 16. This is a dynamic coefficient related to the pipeline resistance characteristics and pump operating point. =0.70.9, For fixed loss coefficient, =0.10.3; The intelligent hierarchical control module 32 transmits a power control signal to the pump body drive module 33 according to the current output power. The pump body drive module 33 controls the circulating pump 11 to output the corresponding power according to the power control signal. The circulating pump 11 is a variable frequency speed control pump.

[0026] Taking n as an example, there are n=4 similar branches. When fully open, the pump power Po=500W. Taking C=0.8 and C=0.2, then: • Open 1 branch path: P(1)=500×[0.8×(1 / 4)+0.2]=500×[0.0125+0.2]≈106.25W • Open 2 branch paths: P(2)=500×[0.8×(2 / 4)+0.2]=500×[0.1+0.2]=150W • Open 4 branch paths: P(4)=500×[0.8×(4 / 4)+0.2]=500×[0.8+0.2]=500W It is evident that when only one branch is used, the power consumption is only 21% of that when all branches are open, demonstrating a significant energy-saving effect.

[0027] In this embodiment (not shown in the figure), the sub-control module 4 also includes an AC / DC conversion module 42, which is electrically connected to the radio frequency communication module 41 and is used to supply power to the radio frequency communication module 41.

[0028] Specifically, the AC / DC conversion module 42 efficiently converts the input AC power into DC power suitable for the operation of the RF communication module 41. The AC / DC conversion module 42 can be directly connected to 220V AC mains power and output 5V DC power, eliminating the need for battery replacement. Its lifespan is synchronized with the building's power supply. It also has overload protection function to prevent abnormal current from damaging the equipment.

[0029] In this embodiment (not shown in the figure), the sub-control module 4 has a built-in display module 43. The display module 43 is electrically connected to the AC / DC conversion module 42 and the radio frequency communication module 41. The display module 43 is used to display the operating parameters of the circulating pump 11 in real time, including output power, operating frequency and running time.

[0030] Specifically, the display module 43 uses a high-definition LCD screen, which can clearly display various data for easy viewing by users. Different colors are used to distinguish various operating states; for example, green indicates normal operation, and red indicates a fault or abnormal situation. In addition, the display module 43 also has a touch function, allowing users to operate directly on the screen to adjust the working mode of the circulating pump 11 or view historical operating records.

[0031] In this embodiment (not shown in the figure), the display module 43 is electrically connected to the alarm module 44, and the alarm module 44 is used for abnormal alarms.

[0032] Specifically, the alarm module 44 employs a dual audible and visual alarm system, providing immediate alerts when equipment malfunctions. The audible alarm uses a high-decibel buzzer to ensure noticeability even in noisy environments; the visual alarm is equipped with a high-brightness LED, which enhances the warning effect through a flashing mode. Furthermore, the alarm module 44 supports a tiered alarm function, adjusting the frequency of the alarm sound and the color change of the light according to the severity of the anomaly, helping users quickly assess the urgency of the problem. To enhance usability, the alarm module 44 also features a one-button mute function, allowing users to temporarily silence the sound alert after confirming the alarm information, while the light continues to flash as a continuous reminder.

[0033] In this embodiment (not shown in the figure), the radio frequency communication module 41 is electrically connected to the timing cycle module 45, and the timing cycle module 45 is used to set the fluid circulation time in the return water pipe 14.

[0034] Specifically, the timed circulation module 45 uses a high-precision timing chip to ensure the accuracy and stability of the circulation duration setting. Users can control the running time of the circulation pump 11 through the touch interface of the display module 43, thereby flexibly adjusting the circulation time of the fluid in the return water pipe 14 to meet the needs of different scenarios. In addition, the timed circulation module 45 supports multiple preset modes. Users can save commonly used circulation duration configurations according to actual usage, thereby reducing repetitive setting steps. Users can set the circulation duration (1 minute to 99 minutes) and support multi-time period timed tasks, such as preset circulation during morning and evening peak hours.

[0035] In this embodiment (not shown in the figure), the sub-control module 4 is connected to the mounting body, which is used for wall installation. The mounting body includes a concealed box and surface-mounted adhesive. When decorating a bare house, the concealed box is preferably embedded in an 86-type concealed box. The sub-control module 4 is installed in the embedded 86-type concealed box, and the embedded 86-type concealed box is embedded into the undecorated wall to achieve overall embedded installation. The circulating pump 11 is also wall-mounted. When installing in a fully furnished apartment, the surface-mounted adhesive is connected to the control module 4. The control module 4 is then directly fixed to the finished wall surface using the adhesive, enabling quick installation without damaging the existing structure. The adhesive has strong adhesion, ensuring that the control module 4 is firmly attached to the wall, while also facilitating subsequent maintenance or disassembly. The circulation pump 11 is connected in series to the existing pipeline, completing the overall connection of the device. The installation is convenient and the modification cost is low.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A smart hot water circulation pump system based on radio frequency control, characterized in that, include: The circulation module includes a circulation pump, the inlet of which is connected to a water guide pipe, the water guide pipe is connected to an inlet pipe, the outlet of which is connected to a heater, the outlet of which is connected to a hot water pipe, the inlet pipe and the hot water pipe are both connected to multiple branch pipes and connected to the water-using end, a return flow component is connected between the hot water pipe and the water guide pipe, the return flow component is used for unidirectional thermal circulation of the fluid, and the heater is used for heating the fluid and controlling the temperature. A sensing module, which is connected to the circulation module, is used to monitor the flow rate of the circulating fluid and generate a sensing signal. The control module is electrically connected to the circulation module and the sensing module. The control module is used to receive sensing signals and control the circulation pump to adjust the flow rate of the circulating fluid. Several sub-control modules are provided, each sub-control module is wirelessly connected to a control module, and each sub-control module has a built-in radio frequency communication module, which is used to wirelessly connect to the control module to control fluid flow.

2. The intelligent hot water circulation pump system based on radio frequency control according to claim 1, characterized in that, The return flow component includes a return water pipe, one end of which is connected to the tail end of the hot water pipe, and the other end of which is connected to the water guide pipe and is equipped with a one-way valve. The return water pipe is used for one-way fluid return.

3. The intelligent hot water circulation pump system based on radio frequency control according to claim 2, characterized in that, The sensing module includes a flow sensor connected to the water pipe. The flow sensor is used to detect the flow rate of fluid in the water pipe and generate a sensing signal.

4. The intelligent hot water circulation pump system based on radio frequency control according to claim 3, characterized in that, The control module includes a radio frequency transceiver module, an intelligent hierarchical control module, and a pump body drive module that are electrically connected in sequence, and the radio frequency transceiver module, the intelligent hierarchical control module, and the pump body drive module are all electrically connected to the power supply module; The radio frequency transceiver module has several preset communication channels. The radio frequency transceiver module and the sub-control module have built-in radio frequency communication modules that are set as nodes. Each node periodically scans all preset channels and calculates the channel quality index (CQI). ； Where i is the current node, For normalized signal-to-noise ratio, This represents the ratio of channel idle time. For historical communication success rate, , and These are weighting coefficients. , and The sum is 1; The radio frequency transceiver module collects the channel quality index (CQI) of each node and transmits it to the intelligent hierarchical control module. The intelligent hierarchical control module selects the communication channel with the highest CQI as the current working channel.

5. The intelligent hot water circulation pump system based on radio frequency control according to claim 4, characterized in that, The intelligent hierarchical control module establishes a power output relationship between the output power of the circulating pump and the number of branch pipes opened on the hot water pipe. ； Where m represents the number of branch pipes opened on the hot water pipe. For output power, Where n is the rated output power of the circulating pump, and n is the total number of branch pipes on the hot water pipe. This is a dynamic coefficient related to the pipeline resistance characteristics and pump operating point. The fixed loss factor; The intelligent hierarchical control module transmits a power control signal to the pump body drive module according to the current output power. The pump body drive module controls the circulating pump to output the corresponding power according to the power control signal. The circulating pump is a variable frequency speed control pump.

6. The intelligent hot water circulation pump system based on radio frequency control according to claim 5, characterized in that, The sub-control module also includes an AC / DC conversion module, which is electrically connected to the radio frequency communication module and is used to power the radio frequency communication module.

7. The intelligent hot water circulation pump system based on radio frequency control according to claim 6, characterized in that, The sub-control module has a built-in display module, which is electrically connected to the AC / DC conversion module and the radio frequency communication module. The display module is used to display the operating parameters of the circulating pump in real time, including output power, operating frequency and running time.

8. The intelligent hot water circulation pump system based on radio frequency control according to claim 7, characterized in that, The display module is electrically connected to the alarm module, which is used for abnormal alarms.

9. The intelligent hot water circulation pump system based on radio frequency control according to claim 8, characterized in that, The radio frequency communication module is electrically connected to the timing cycle module, which is used to set the fluid circulation time in the return water pipe.

10. The intelligent hot water circulation pump system based on radio frequency control according to claim 9, characterized in that, The sub-control module is connected to the mounting body, which is used for wall installation.

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