Water quality updating and intelligent deodorization system for bathroom and control method

Abstract

The present application belongs to the field of building water supply and drainage and ventilation air conditioning technology, and discloses a water quality updating and intelligent deodorization system for a bathroom and a control method. The system comprises intelligent deodorization controllers arranged at each water using unit, the water inlet end of the controller is connected with a water supply pipe, and the water outlet end is connected with a floor drain through a drain pipe. The controller is internally provided with a main control board, water quality, temperature, pressure, flow sensors and an electromagnetic valve. The water using unit is further provided with a supply air system, an exhaust air system and high / low position gas sensors. The main control board controls the electromagnetic valve to open according to water quality and / or temperature data, so that the standing water in the pipe is discharged into the floor drain to realize water quality updating and water replenishment. At the same time, the supply and exhaust air systems are controlled to open and close and the air volume is controlled according to the concentration of harmful gases, and indoor micro-negative pressure is maintained. Through intelligent linkage of multiple systems, the present application realizes precise water quality updating, automatic water replenishment of the floor drain water seal and scientific air flow organization, effectively solves the problems of pipeline water quality aging and bathroom odor return, and significantly improves water health and air quality.

Description

Technical Field

[0001] This invention belongs to the field of building water supply and drainage, ventilation and air conditioning technology, specifically relating to a water quality renewal and intelligent odor control system and method for bathrooms. This invention can be widely applied to bathrooms or similar water-using spaces in residences, apartments, hotels, hospitals, and public buildings where water quality and air quality requirements are present. Background Technology

[0002] In residential and public buildings, bathrooms, as core areas for water use and waste disposal, are directly affected by water quality and air quality, impacting users' health and comfort. Currently, this field faces the following key technical challenges:

[0003] Water quality aging problem in water supply systems: Traditional branched or chained water supply systems are simple in design and low in cost, but when water-using units are not used for a long time, the water in the pipes is in a stagnant state, and the residual chlorine is consumed rapidly, which can easily lead to bacterial growth. The water quality at the end point is seriously substandard, affecting the health and safety of water use.

[0004] Odor problem from floor drains: Bathroom floor drains rely on the water seal of the trap to isolate harmful gases from the sewer system. However, factors such as evaporation due to prolonged disuse and negative pressure suction in the drain pipes can cause the water seal to dry out, making the floor drain a major channel for indoor air pollution. Hydrogen sulfide (heavier than air) and ammonia (lighter than air) are the main components of the odor, and their concentrations change dynamically with ventilation, temperature, and humidity.

[0005] Ineffective ventilation systems: Most existing bathrooms use an airflow organization method of "natural air intake through the door gaps and mechanical exhaust from the ceiling." This airflow pattern carries heavy harmful gases such as hydrogen sulfide accumulated in low-lying areas like floor drains upwards to the breathing zone, actually exacerbating air pollution. Furthermore, ventilation systems are mostly timed or manually controlled, lacking linkage with air quality parameters, resulting in energy waste, excessive noise, and unverifiable effectiveness.

[0006] Lack of coordination between systems: Currently, water supply, drainage and ventilation systems are designed and operated independently with low integration and lack of effective linkage control, making it impossible to solve the comprehensive problems of water quality, odor prevention and air quality in a coordinated manner.

[0007] To address these issues, a water supply system solution employing a Venturi valve and a timed drain valve has emerged on the market. This solution utilizes the pressure difference principle of the Venturi valve to circulate water in a portion of the branch pipes when water is used at specific points, aiming to refresh the water quality. However, this solution has significant drawbacks: First, the circulation flow rate of the Venturi valve accounts for a very small proportion of the total flow rate in the main pipe (approximately 2%-15%), limiting its effectiveness in refreshing the ends of the branch pipes. Second, the one-way check valve characteristic of the Venturi valve means that water can only flow from the main pipe to the branch pipes, failing to achieve mutual circulation between the branch pipes, thus preventing the effective renewal of most stagnant water areas within the system. Furthermore, its timed drain strategy does not consider the impact of water temperature on bacterial growth rates, resulting in either frequent draining leading to water waste or excessively long cycles that cannot guarantee water quality safety. Moreover, the draining is directly discharged without coordination with floor drain replenishment. Simultaneously, this solution still fails to resolve the existing problems with floor drain replenishment and ventilation systems. Summary of the Invention

[0008] The purpose of this invention is to provide a water quality renewal and intelligent odor control system and method for toilets to solve the above-mentioned technical problems.

[0009] To solve the above-mentioned technical problems, the specific technical solution of the water quality renewal and intelligent toilet odor prevention system and control method of the present invention is as follows:

[0010] A water quality renewal and intelligent odor control system for toilets, comprising:

[0011] An intelligent odor-proof controller is installed in each water-using unit. The inlet of the intelligent odor-proof controller is connected to the upstream water supply pipe, and the outlet is connected to the floor drain through the drain pipe.

[0012] The intelligent odor control controller includes a main control board and a water quality sensor, a temperature sensor, a pressure sensor, a solenoid valve, and a flow sensor, which are electrically connected to the main control board respectively.

[0013] The water supply unit is also equipped with an air supply system, an exhaust system, a low-level gas sensor, and a high-level gas sensor. The air supply system, the exhaust system, the low-level gas sensor, and the high-level gas sensor are respectively connected to the main control board.

[0014] The main control board controls the solenoid valve to open based on the monitoring data from the water quality sensor and / or the temperature sensor, so that the water in the water supply pipeline is discharged into the floor drain through the drain pipe. At the same time, it controls the opening and closing of the air supply system and the air volume adjustment based on the monitoring data from the low-level gas sensor and / or the high-level gas sensor.

[0015] Furthermore, the intelligent odor control controller also includes a pressure reducing valve, which is electrically connected to the main control board. The main control board controls the operation of the pressure reducing valve based on the water pressure data monitored by the pressure sensor, so that the system pressure is within the rated operating pressure range of the solenoid valve.

[0016] Furthermore, the air supply system includes an electric air supply valve, an air supply pipe, and an air supply static pressure box arranged sequentially along the fresh air delivery direction. The bottom of the air supply static pressure box has multiple air supply ports for uniformly delivering fresh air from top to bottom into the water-using unit room. The exhaust system includes an exhaust static pressure box, an electric exhaust valve, and an exhaust pipe located at the bottom of the water-using unit. The electric air supply valve and the electric exhaust valve are electrically connected to and controlled by the main control board.

[0017] Furthermore, it also includes an indoor-outdoor pressure differential monitor, which is communicatively connected to the main control board; the low-level gas sensor is located near the floor drain and is used to monitor the concentration of pollutant gases with a density greater than air in real time and feed back the signal to the main control board; the high-level gas sensor is located in the upper area of ​​the water unit and is used to monitor the concentration of pollutant gases with a density less than air in real time and feed back the signal to the main control board; the indoor-outdoor pressure differential monitor is located on the indoor and outdoor walls of the water unit and is used to monitor the indoor-outdoor air pressure difference and feed back the signal to the main control board. The main control board adjusts the opening of the electric air supply valve and the electric air exhaust valve according to the feedback data from the indoor-outdoor pressure differential monitor to maintain a slightly negative pressure state inside the water unit.

[0018] Furthermore, the main control board dynamically adjusts the monitoring frequency of the water quality sensor based on the water temperature data monitored by the temperature sensor: when the water temperature is lower than or equal to the set temperature threshold, the monitoring frequency of the water quality sensor is reduced; when the water temperature is higher than the set temperature threshold, the monitoring frequency of the water quality sensor is increased.

[0019] Furthermore, when the water quality sensor detects that any water quality index exceeds the standard, the main control board controls the solenoid valve to open and release water. The flow sensor monitors the amount of water released in real time. When the amount of water released in a single instance reaches the preset update multiple of the volume of all water supply pipes in the water-using unit, and the amount of water released meets the water replenishment requirements of the ground drain seal, the main control board controls the solenoid valve to close.

[0020] Furthermore, when the hydrogen sulfide concentration detected by the low-level gas sensor or the ammonia concentration detected by the high-level gas sensor exceeds a preset threshold, the main control board activates the ventilation mode, controls the air supply system and exhaust system to open, and triggers the solenoid valve to open for water quality renewal and floor drain replenishment; when the concentrations detected by the low-level gas sensor and the high-level gas sensor drop to 25% of the preset value, the main control board controls the air supply system and exhaust system to close.

[0021] Furthermore, the intelligent odor control controller is equipped with multiple communication interfaces, including communication interface one, communication interface two, communication interface three, communication interface four, communication interface five, and communication interface six. Communication interface one is used for inter-unit communication with intelligent odor control controllers of other water-using units to achieve coordinated control and mutual backup among multiple units. Communication interfaces two, three, four, five, and six are respectively used for intra-unit communication with electric air supply valve, high-level gas sensor, indoor-outdoor differential pressure monitor, low-level gas sensor, and electric exhaust valve.

[0022] Furthermore, one end of the water supply pipe is connected to the main water supply pipe in the water treatment equipment room via a booster pump, and the other end is connected in a chain-like manner to each water-using appliance in the water-using unit and then to the water inlet of the intelligent odor-proof controller.

[0023] This invention also discloses a water quality renewal and intelligent odor control method for toilets, implemented using the aforementioned water quality renewal and intelligent odor control system, comprising the following steps: S1. After the system is powered on, it enters standby mode. The main control board monitors the water pressure through the pressure sensor and controls the pressure reducing valve to keep the system pressure stable. At the same time, it dynamically adjusts the monitoring frequency of the water quality sensor according to the water temperature monitored by the temperature sensor. S2. When the water quality sensor detects that any water quality index exceeds the standard, or when a linkage trigger signal for ventilation mode is received, the main control board controls the solenoid valve to open, and discharges the water in the water supply pipe into the floor drain through the drain pipe. The flow sensor monitors the discharge volume in real time. When the single discharge volume reaches the preset update multiple of the volume of all water supply pipes in the water unit, and the discharge volume meets the water replenishment requirements of the floor drain water seal, the main control board controls the solenoid valve to close. S3. When the hydrogen sulfide concentration detected by the low-level gas sensor or the ammonia concentration detected by the high-level gas sensor exceeds the preset threshold, the main control board starts the ventilation mode, adjusts the opening of the electric air supply valve and the electric air exhaust valve to form a downward airflow in the water unit, and triggers the previous step in conjunction with the operation; when the concentration detected by the gas sensor drops to 25% of the preset value, the main control board controls the electric air supply valve and the electric air exhaust valve to close. During the ventilation mode, the indoor-outdoor pressure difference monitor continuously monitors the indoor-outdoor air pressure difference and feeds it back to the main control board. The main control board then fine-tunes the opening of the electric air supply valve and the electric air exhaust valve based on the feedback data to maintain a slightly negative pressure state within the water unit.

[0024] The water quality renewal and intelligent toilet odor control system and control method of the present invention have the following advantages:

[0025] 1. Precise and controllable water quality updates: By installing an intelligent controller with integrated water quality, temperature, pressure, and flow sensors at the end of each water-using unit, on-demand and precise local water quality updates are achieved, completely solving the problem of ineffective updates in dead water areas of branch pipes in traditional systems. The update effect is intuitive and reliable.

[0026] 2. Water conservation and odor prevention in tandem: Abandoning the traditional timed high-flow-rate drainage method, this system precisely and quantitatively guides the "wastewater" generated during water quality renewal to the floor drain, replenishing the water trap and achieving two goals at once. This not only realizes the secondary use of water resources and saves water, but also fundamentally solves the problem of backflow odor caused by the floor drain drying out.

[0027] 3. Scientifically and rationally organized airflow: Adopting an airflow organization pattern of "uniform air supply from the top and concentrated exhaust from the bottom," a unidirectional airflow from top to bottom is formed. This design can effectively push fresh air downwards from the breathing area and directly exhaust harmful gases such as hydrogen sulfide, which are heavier than air and tend to accumulate at the bottom, from the bottom. This avoids the drawbacks of traditional top exhaust methods that bring pollutants to the breathing area, significantly improving indoor air quality.

[0028] 4. Intelligent linkage, energy saving and noise reduction: High and low gas sensors monitor the concentration of harmful gases of different densities in real time, and combined with indoor and outdoor pressure difference data, the main control board intelligently controls the start and stop and air volume of the supply and exhaust fans. This enables the ventilation system to operate "on demand," avoiding energy waste and noise pollution caused by prolonged ineffective operation, while also extending the service life of the equipment.

[0029] 5. Deep integration of multiple systems: This invention breaks down the barriers between traditional water supply, drainage and ventilation disciplines. Through a unified intelligent control platform, it achieves deep collaboration and linkage of multiple functions such as water quality monitoring, pipe flushing, floor drain water replenishment, air purification and negative pressure maintenance, providing users with a comprehensive and three-dimensional healthy bathroom environment. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the water quality update and intelligent odor prevention system for toilets according to the present invention.

[0031] Figure 2 This is a schematic diagram of the intelligent odor control controller of the present invention.

[0032] The markings in the diagram are as follows: 0-Boost water pump; 1-Intelligent odor control controller; 1-1-Inlet interface; 1-2-Outlet interface; 2-Floor drain; 3-Electric air supply valve; 4-Air supply duct; 5-Air supply static pressure box; 6-Exhaust static pressure box; 7-Electric exhaust valve; 8-Exhaust duct; 9-Low-level gas sensor; 10-High-level gas sensor; 11-Indoor / outdoor pressure difference monitor; 12-Inter-unit communication line; 13-Inter-unit communication line; 14-Water supply pipe; 15-Drain pipe; A-Main control board; B-Pressure reducing valve; C-Water quality sensor; D-Temperature sensor; E-Pressure sensor; F-Solenoid valve; G-Flow sensor; H1-Communication interface one; H2-Communication interface two; H3-Communication interface three; H4-Communication interface four; H5-Communication interface five; H6-Communication interface six. Detailed Implementation

[0033] To better understand the purpose, structure, and function of this invention, the following detailed description of a water quality update and intelligent toilet odor control system is provided in conjunction with the accompanying drawings.

[0034] like Figure 1 As shown, this invention provides a water quality update and intelligent odor control system for bathrooms, applicable to buildings containing one or more water-using units. For example, a bathroom or laundry room is a water-using unit, and each unit contains at least one sanitary water appliance, such as a faucet, shower head, or showerhead. Figure 2 As shown, this embodiment takes one water-using unit (such as a toilet) as an example for detailed explanation.

[0035] The core of the system is the intelligent odor control controller 1 installed in each water-using unit, as well as the water supply terminal pipeline and ventilation system that work together with it.

[0036] Within each water-using unit, the system includes a water supply subsystem, a ventilation subsystem, and a sensor and monitoring system, with the specific structure as follows:

[0037] Water supply subsystem: One end of the water supply pipe 14 is connected to the main water supply pipe in the water treatment equipment room via a booster pump 0. The other end enters the water-using unit in a chain-like manner, connecting sequentially to the water-using appliances such as the washbasin and shower in that unit. Its final end is not directly closed but connects to the inlet of the intelligent odor-proof controller 1. The outlet of the intelligent odor-proof controller 1 is connected to the floor drain 2 of this water-using unit via a drain pipe 15. The floor drain 2 is the original floor drain of the water-using unit, used to collect water discharged from the drain pipe.

[0038] Supply and exhaust ventilation subsystem:

[0039] Air supply path: One end of the air supply duct 4 is connected to the outdoor fresh air supply via an electric air supply valve 3 to introduce outdoor fresh air, and the other end is connected to the air supply plenum 5 installed in the ceiling. The bottom of the air supply plenum 5 has multiple evenly spaced small air outlets to ensure that fresh air can be evenly and slowly delivered vertically downwards into the room. The air supply plenum 5 is responsible for evenly delivering fresh air into the water-using unit and forming a top-down airflow within the space, ensuring that the fresh air first passes through the breathing zone height of personnel before being exhausted outdoors via the exhaust plenum 6 at the bottom of the water-using unit.

[0040] Exhaust path: Stale indoor air is collected by an exhaust static pressure box 6 located under the water unit or near the ground, and discharged outdoors via an electric exhaust valve 7 and an exhaust pipe 8. Both the electric supply valve 3 and the electric exhaust valve 7 are electrically connected to and controlled by the main control board A within the intelligent odor control controller 1. The electric supply valve 3 executes the opening adjustment commands from the main control board A and provides feedback on the execution status, adjusting the air supply volume in the bathroom; the exhaust pipe 8 is used to exhaust stale air outdoors.

[0041] Sensors and monitoring systems:

[0042] In the lower area of ​​the water unit, such as the low-lying area near the floor drain 2, a low-level gas sensor 9 is installed to monitor the concentration of pollutant gases (such as hydrogen sulfide) with a density greater than that of air in real time and feed back the signal to the main control board A.

[0043] In the upper area of ​​the water-using unit, such as inside the ceiling or in the upper part of the space, a high-level gas sensor 10 is installed to monitor the concentration of pollutant gases (such as ammonia) with a density less than that of air in real time and to feed back the signal to the main control board A.

[0044] An indoor-outdoor pressure difference monitor 11 is installed on the indoor and outdoor walls of the water unit to monitor the air pressure difference between the bathroom and the outside and send the signal back to the A main control board. The data is used to adjust the opening of the electric air supply valve 3 and the electric air exhaust valve 7. The purpose is to ensure that the space inside the water unit is in a negative pressure state (preset to -5pa, which can be set) to prevent odors from overflowing from the water unit.

[0045] All of the above sensors are connected to the corresponding communication interface of the intelligent odor control controller 1 via the communication line 12 within the unit.

[0046] like Figure 2 As shown, the intelligent odor control controller 1 of each water-using unit is a highly integrated core component. Its housing has an inlet interface 1-1 and an outlet interface 1-2, used to connect to the upstream water supply pipe 14 and the downstream drain pipe 15, respectively. The controller mainly includes the following components:

[0047] Main control board A: As the core of logic operations and instruction issuance, it is responsible for collecting and processing data signals from various components and linked devices, and sending corresponding control instructions.

[0048] Pressure reducing valve B: Receives pressure reduction commands from the main control board A and provides feedback on the execution status. Its function is to control the main control board A to reduce the pressure as needed when the pressure sensor E detects that the water system pressure exceeds the rated operating pressure range of the solenoid valve F, ensuring the safe operation of the solenoid valve F.

[0049] Pressure sensor E: Monitors the water system pressure in real time and sends a signal back to the main control board A. Its alarm threshold can be set to 0.9 times the maximum working pressure of solenoid valve F, which serves as the numerical basis for triggering the action of pressure reducing valve B.

[0050] Water quality sensor C: Executes monitoring commands from main control board A to monitor and report indicators such as turbidity, residual chlorine, and pH value. Its monitoring frequency can be dynamically adjusted according to commands. When a monitored indicator exceeds the standard (reference data for each indicator can be set), main control board A will issue a water discharge command to solenoid valve F, initiating a water quality refresh and drain replenishment process.

[0051] Temperature sensor D: Monitors the temperature of cold water in the pipeline in real time and feeds it back to the main control board A. When the water temperature is ≤20℃, the system determines that bacterial growth is very slow or has stopped, and can reduce the monitoring frequency of water quality sensor C; when the water temperature is >20℃, the bacterial growth rate is accelerated, and the system can increase the monitoring frequency of water quality sensor C.

[0052] Solenoid valve F: Executes the water discharge command from the main control board A and provides feedback on the execution status. Its opening and closing directly control the water discharge process.

[0053] Flow sensor G: Used to monitor and count the single and cumulative water discharge through solenoid valve F. Its value is used to determine whether the system water quality renewal and drain replenishment processes are complete.

[0054] Communication interfaces H1-H6: The intelligent odor control controller 1 is equipped with multiple communication interfaces. Specifically, communication interface H1 communicates with the intelligent odor control controllers 1 of other water-using units via inter-unit communication line 13 to achieve coordinated control and mutual backup among multiple units; communication interface H2 communicates with the electric air supply valve 3 via intra-unit communication line 12; communication interface H3 communicates with the high-level gas sensor 10 via intra-unit communication line 12; communication interface H4 communicates with the indoor / outdoor pressure difference monitor 11 via intra-unit communication line 12; communication interface H5 communicates with the low-level gas sensor 9 via intra-unit communication line 12; and communication interface H6 communicates with the electric exhaust valve 7 via intra-unit communication line 12.

[0055] (III) Working Mode

[0056] This system has the following three main working modes:

[0057] 1. Standby mode

[0058] The system enters this mode by default upon power-on. At this time, all water appliances can be used normally. The main control board A continuously monitors the water pressure via pressure sensor E and controls pressure reducing valve B to maintain stable system pressure. Simultaneously, the main control board A dynamically adjusts the monitoring frequency of water quality sensor C based on the water temperature monitored by temperature sensor D: when the water temperature is below or equal to 20℃, the monitoring frequency is reduced; when the water temperature is above 20℃, the monitoring frequency is increased to match the rate of bacterial growth.

[0059] Solenoid valve F is in the closed state, flow sensor G is in real-time monitoring state; communication interfaces H1-H6 are communicating normally.

[0060] 2. Water quality update and drain replenishment mode

[0061] When water quality sensor C detects any indicator exceeding the standard, or receives a linkage trigger signal from the ventilation mode, main control board A sends an opening command to solenoid valve F. Water in the pipe passes through solenoid valve F and flow sensor G, and is precisely discharged into floor drain 2 through drain pipe 15. During this process, flow sensor G measures the flow in real time. Main control board A continuously judges the following two conditions:

[0062] Condition 1: Does the volume of a single discharge reach twice the total volume of all 14 water supply pipes within the water-using unit?

[0063] Condition 2: Does the drainage volume meet the water replenishment requirements of the drain's second water seal? When both conditions are met, the main control board A issues a command to close the solenoid valve F, ending the current process. This mode ensures thorough water replacement within the unit and simultaneously completes precise water replenishment to the drain.

[0064] 3. Ventilation and air exchange modes

[0065] When the low-level gas sensor 9 detects that the H2S concentration or the high-level gas sensor 10 detects that the NH3 concentration exceeds the preset threshold, the main control board A automatically activates the ventilation mode. The main control board A sends commands to the electric supply air valve 3 and the electric exhaust air valve 7 to adjust them to the preset opening degrees, creating a stable top-to-bottom laminar airflow in the room to exhaust polluted air from the bottom. Simultaneously, this mode triggers a "water quality refresh and floor drain replenishment mode" to further eliminate odor sources. When the gas sensor detects that the concentration drops to 25% of the preset value, the main control board A commands the air valves to close, ending the ventilation process. Throughout the ventilation process, the indoor-outdoor pressure difference monitor 11 continues to operate, and the main control board A fine-tunes the opening degrees of the supply and exhaust air valves based on its feedback data to ensure that a slight negative pressure (e.g., -5Pa) is maintained in the bathroom, effectively preventing odors from spreading to other rooms.

[0066] (iv) Multi-unit collaboration

[0067] When a building has multiple water-using units, the intelligent odor control controller 1 of each unit is connected via an inter-unit communication line 13. When a unit needs to activate a certain mode, the working sequence of each unit can be coordinated through communication to avoid resource conflicts caused by simultaneous activation of equipment. In emergency situations, the controllers of adjacent units can also serve as backups, improving the overall reliability of the system.

[0068] In summary, this invention, through its ingenious system design and intelligent control logic, achieves the comprehensive environmental goal of "active water, odorless floor drains, and fresh air" in the bathroom, and has extremely high practical value and promotional significance.

[0069] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A water quality renewal and intelligent odor control system for toilets, characterized in that, include: The intelligent odor control (1) is installed in each water unit. The water inlet of the intelligent odor control (1) is connected to the upstream water supply pipe (14), and the water outlet is connected to the floor drain (2) through the drain pipe (15). The intelligent odor control controller (1) includes a main control board (A) and a water quality sensor (C), a temperature sensor (D), a pressure sensor (E), a solenoid valve (F), and a flow sensor (G) that are electrically connected to the main control board (A). The water supply unit is also equipped with an air supply system, an exhaust system, a low-level gas sensor (9) and a high-level gas sensor (10), and the air supply system, the exhaust system, the low-level gas sensor (9) and the high-level gas sensor (10) are respectively connected to the main control board (A); The main control board (A) controls the solenoid valve (F) to open based on the monitoring data of the water quality sensor (C) and / or the temperature sensor (D), so that the water in the water supply pipe (14) is discharged into the floor drain (2) through the drain pipe (15). At the same time, it controls the opening and closing of the air supply system and the air volume adjustment based on the monitoring data of the low-level gas sensor (9) and / or the high-level gas sensor (10).

2. The water quality updating and intelligent toilet odor control system according to claim 1, characterized in that, The intelligent odor control controller (1) also includes a pressure reducing valve (B), which is electrically connected to the main control board (A). The main control board (A) controls the pressure reducing valve (B) to operate according to the water pressure data monitored by the pressure sensor (E), so that the system pressure is within the rated operating pressure range of the solenoid valve (F).

3. The water quality updating and intelligent toilet odor control system according to claim 1, characterized in that, The air supply system includes an electric air supply valve (3), an air supply pipe (4), and an air supply static pressure box (5) arranged sequentially along the fresh air supply direction. The air supply static pressure box (5) has multiple air supply ports at the bottom for uniformly supplying fresh air from top to bottom into the water unit room. The exhaust system includes an exhaust static pressure box (6), an electric exhaust valve (7), and an exhaust pipe (8) located at the bottom of the water unit. The electric air supply valve (3) and the electric exhaust valve (7) are electrically connected to and controlled by the main control board (A).

4. The water quality updating and intelligent toilet odor control system according to claim 3, characterized in that, It also includes an indoor-outdoor pressure differential monitor (11), which is connected to the main control board (A); the low-level gas sensor (9) is located near the floor drain (2) and is used to monitor the concentration of pollutant gas with a density greater than that of air in real time and feed back the signal to the main control board (A); the high-level gas sensor (10) is located in the upper area of ​​the water unit and is used to monitor the concentration of pollutant gas with a density less than that of air in real time and feed back the signal to the main control board (A); the indoor-outdoor pressure differential monitor (11) is located on the indoor and outdoor walls of the water unit and is used to monitor the indoor-outdoor air pressure difference and feed back the signal to the main control board (A). The main control board (A) adjusts the opening of the electric air supply valve (3) and the electric exhaust valve (7) according to the feedback data of the indoor-outdoor pressure differential monitor (11) to maintain a slightly negative pressure state in the water unit.

5. The water quality updating and intelligent odor control system for toilets according to claim 1, characterized in that, The main control board (A) dynamically adjusts the monitoring frequency of the water quality sensor (C) based on the water temperature data monitored by the temperature sensor (D): when the water temperature is lower than or equal to the set temperature threshold, the monitoring frequency of the water quality sensor (C) is reduced; when the water temperature is higher than the set temperature threshold, the monitoring frequency of the water quality sensor (C) is increased.

6. The water quality updating and intelligent toilet odor control system according to claim 1, characterized in that, When the water quality sensor (C) detects that any water quality index exceeds the standard, the main control board (A) controls the solenoid valve (F) to open to release water. The flow sensor (G) monitors the amount of water released in real time. When the amount of water released in a single instance reaches the preset update multiple of the volume of all water supply pipes (14) in the water-using unit, and the amount of water released meets the water replenishment requirements of the water seal of the floor drain (2), the main control board (A) controls the solenoid valve (F) to close.

7. The water quality updating and intelligent odor control system for toilets according to claim 1, characterized in that, When the hydrogen sulfide concentration detected by the low-level gas sensor (9) or the ammonia concentration detected by the high-level gas sensor (10) exceeds a preset threshold, the main control board (A) starts the ventilation mode, controls the air supply system and exhaust system to open, and triggers the solenoid valve (F) to open for water quality renewal and floor drain water replenishment; when the concentration detected by the low-level gas sensor (9) and the high-level gas sensor (10) drops to 25% of the preset value, the main control board (A) controls the air supply system and exhaust system to close.

8. The water quality updating and intelligent odor control system for toilets according to claim 1, characterized in that, The intelligent odor control controller (1) is equipped with multiple communication interfaces, including communication interface one (H1), communication interface two (H2), communication interface three (H3), communication interface four (H4), communication interface five (H5) and communication interface six (H6). Communication interface one (H1) is used to communicate with the intelligent odor control controllers of other water units to realize coordinated control and mutual backup among multiple units. Communication interface two (H2), communication interface three (H3), communication interface four (H4), communication interface five (H5) and communication interface six (H6) are respectively used to communicate with the electric air supply valve (3), the high-level gas sensor (10), the indoor and outdoor pressure difference monitor (11), the low-level gas sensor (9) and the electric exhaust valve (7) within the unit.

9. The water quality updating and intelligent toilet odor control system according to claim 1, characterized in that, One end of the water supply pipe (14) is connected to the water supply main pipe in the water treatment equipment room through a booster pump (0), and the other end is connected to the water inlet of the intelligent odor control (1) in a chain-like manner after being connected to each water-using appliance in the water-using unit.

10. A method for water quality renewal and intelligent odor control in toilets, implemented using the water quality renewal and intelligent odor control system for toilets as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. After the system is powered on, it enters standby mode. The main control board (A) monitors the water pressure through the pressure sensor (E) and controls the pressure reducing valve (B) to keep the system pressure stable. At the same time, it dynamically adjusts the monitoring frequency of the water quality sensor (C) according to the water temperature monitored by the temperature sensor (D). S2. When the water quality sensor (C) detects that any water quality index exceeds the standard, or when it receives the linkage trigger signal of the ventilation mode, the main control board (A) controls the solenoid valve (F) to open, and discharge the water in the water supply pipe (14) into the floor drain (2) through the drain pipe (15). The flow sensor (G) monitors the discharge volume in real time. When the single discharge volume reaches the preset update multiple of the volume of all water supply pipes (14) in the water unit, and the discharge volume meets the water replenishment requirements of the water seal of the floor drain (2), the main control board (A) controls the solenoid valve (F) to close. S3. When the hydrogen sulfide concentration detected by the low-level gas sensor (9) or the ammonia concentration detected by the high-level gas sensor (10) exceeds the preset threshold, the main control board (A) starts the ventilation mode, adjusts the opening of the electric air supply valve (3) and the electric exhaust valve (7) to form an airflow from top to bottom in the water unit, and triggers step S2 in conjunction with the gas sensor; when the concentration detected by the gas sensor drops to 25% of the preset value, the main control board (A) controls the electric air supply valve (3) and the electric exhaust valve (7) to close. During step S3, the indoor and outdoor pressure difference monitor (11) continuously monitors the indoor and outdoor air pressure difference and feeds it back to the main control board (A). The main control board (A) finely adjusts the opening of the electric air supply valve (3) and the electric air exhaust valve (7) according to the feedback data to maintain a slightly negative pressure state in the water unit.

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