Point position coupling global exhaust system for healthy residence toilet

Abstract

The invention discloses a point location coupling global exhaust system for a healthy residence toilet, and relates to the technical field of healthy residence indoor environment control, the point location coupling global exhaust system comprises a point location exhaust system and a global exhaust system, local exhaust is to capture and exhaust harmful pollutants at local places where the harmful pollutants are generated, and the global exhaust system is a global exhaust system. Therefore, the ventilation mode of diffusing to the surrounding space environment is controlled. The water outlet of the closestool is used as a local air exhaust port, the flushing port of the closestool is converted into the local air exhaust port with the air exhaust function by additionally arranging the water supply bypass pipeline of the closestool, local air exhaust airflow is formed around the closestool, the concentration peak value of peculiar smell pollutants after people go to the toilet is weakened, and the peculiar smell pollutants are prevented from being diffused outwards; a global exhaust system is synchronously coupled, and peculiar smell pollutants diffused to the whole space are removed in a stepped mode; and finally, the efficiency, convenience and practicability of the exhaust system are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of healthy residential indoor environment control, and in particular to a point-coupled global exhaust system for healthy residential bathrooms. Background Art

[0002] Malodor from bathrooms is a major source of indoor air pollution, affecting not only residents' health but also creating a negative living experience. Therefore, eliminating bathroom odor pollutants and creating a fresh, healthy air environment are urgent needs facing the current construction of healthy homes. An efficient exhaust system can not only quickly remove odor pollutants generated by toilet use, but also prevent odor pollutants from spreading to other rooms. Therefore, developing an efficient exhaust system that can quickly eliminate pollutants generated by daily activities in the bathroom and reduce the spread of pollutants to adjacent rooms is of great significance for controlling pollutant concentration levels in residential buildings and creating a healthy living environment.

[0003] Currently, there are a number of reports and patents related to bathroom exhaust systems. These efforts primarily focus on improving the performance and odor control capabilities of bathroom exhaust systems through methods such as selecting exhaust vent locations, adjusting air exchange rates, optimizing bathroom structures, and adding toilet deodorization modules. For example, researchers compared top, floor, and sidewall exhaust systems and found that sidewall exhaust can reduce the vertical spread of pollutants. To reduce odor concentration, a proposal was made to install a skirting board deodorization module at the base of the wall. While increasing bathroom air exchange rates can improve pollutant removal, the impact of factors such as the location of the bathroom vents, the dry / wet separation structure, and the location of sanitary fixtures must also be considered. Furthermore, toilets with deodorizing features such as rotating foam shields and activated carbon can also reduce pollutant diffusion. However, these methods typically require regular replenishment of foam fillers or replacement of deodorizing activated carbon, making them cumbersome, inconvenient, and economical to use over long periods of time. It is clear that existing exhaust and pollution control methods still primarily rely on global exhaust, with limited potential for optimizing exhaust efficiency. To address this, researchers introduced localized exhaust and proposed an odor control solution based on internal suction technology within the toilet seat. This system can selectively remove pollutants generated by toilet use and suppress their diffusion. However, because the toilet seat must be open when using the toilet, the suction and exhaust can only be closed after the toilet is finished. This prevents localized exhaust from synchronizing with toilet use, reducing its effectiveness.

[0004] In summary, the current toilet exhaust system is still dominated by global exhaust. After people use the toilet, it is difficult to quickly remove the odor pollutants generated. By adjusting the position of the exhaust port, increasing the number of air changes, optimizing the structure of the toilet, and adding a toilet deodorizing function module, the improvement of the sewage discharge efficiency is very limited. At the same time, increasing the number of air changes in the toilet will also cause the negative pressure in the toilet to rise, causing the negative pressure at the location of the floor drain, hand basin overflow hole plug, etc. to increase, and the risk of odor to increase. SUMMARY

[0005] The purpose of the present application is to provide a point coupling global exhaust system for a healthy residential toilet, which realizes the coupling effect of local and global exhaust without changing the structure of the toilet and adding auxiliary modules, and creates a fresh air environment in the healthy residential toilet.

[0006] To achieve the above-mentioned purpose, the technical solution of the present application is as follows: a point coupling global exhaust system for a healthy residential toilet, comprising:

[0007] A point exhaust system is used to generate a local exhaust airflow at the location of the toilet. The point exhaust port of the system is arranged at a predetermined position of the toilet.

[0008] A global exhaust system is used to generate a global exhaust airflow in the toilet. The global exhaust port of the system is arranged at the top area of the toilet.

[0009] An exhaust convergence channel is provided. The odor gas pollutants collected by the point exhaust system and the global exhaust system are all discharged into the exhaust convergence channel.

[0010] As a preferred scheme of the present application, during the high pollution period after people use the toilet, the point exhaust system is used to weaken the concentration peak of high-concentration pollutants and inhibit their diffusion to the toilet space environment. For odor pollutants that are not effectively discharged by the point exhaust system, the global exhaust system is used to realize synchronous gradient discharge.

[0011] As a preferred scheme of the present application, the exhaust convergence channel is a wind well, and a non-powered air cap is arranged at the top of the wind well to discharge the odor gas pollutants to the outdoor.

[0012] As a preferred scheme of the present application, the point exhaust system comprises a non-frequency conversion speed regulation fan and a point exhaust branch pipe. One end of the point exhaust branch pipe is connected to the point exhaust port, and the other end is connected to the wind well through the non-frequency conversion speed regulation fan.

[0013] As a preferred scheme of the present application, when people use the toilet, high-concentration odor pollutants are generated in the toilet. At this time, the toilet flushing port is switched to the point exhaust port, and the high-concentration odor pollutants are discharged into the wind well through the point exhaust branch pipe under the action of the non-frequency conversion speed regulation fan.

[0014] As a preferred solution of the present invention, the global exhaust system includes an exhaust fan, a constant air volume regulating valve and a global exhaust branch pipe. One end of the global exhaust branch pipe is connected to the global exhaust outlet, and the other end is connected to the air shaft through the exhaust fan and the constant air volume regulating valve in turn.

[0015] As a preferred solution of the present invention, with the operation of the point exhaust system, some odor pollutants will escape into the bathroom space environment; at this time, the global exhaust outlet is used to discharge the odor pollutants that have escaped into the bathroom space environment into the air shaft through the global exhaust branch pipe under the action of the exhaust fan.

[0016] As a preferred solution of the present invention, the exhaust volume ratio of the point exhaust system and the global exhaust system is a predetermined ratio, and the predetermined ratio includes 1:1.

[0017] As a preferred solution of the present invention, the exhaust volume of the point exhaust system and the global exhaust system are respectively adjusted by a stepless variable speed control fan located on the point exhaust branch pipe and a constant air volume regulating valve located on the global exhaust branch pipe.

[0018] As a preferred solution of the present invention, a toilet water supply bypass pipe is added to convert the toilet flush outlet into a point exhaust outlet with exhaust function.

[0019] By adopting the above technical solution, the present invention can achieve the following technical effects: the present invention can significantly shorten the time to remove odor pollutants and improve their removal efficiency. While achieving the same exhaust effect as the traditional global exhaust system, the number of ventilation times can be reduced, thereby reducing the risk of bathroom odor caused by excessive local negative pressure due to high ventilation times, and reducing the operating energy consumption of the exhaust fan. In addition, the present invention does not require changing the main structure of the toilet or adding auxiliary modules. It can be achieved only through pipeline modification and optimization of the airflow path. The construction and operation process is simple and economical, which can ensure the convenience and practicality of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 This is a structural diagram of a point-coupled global exhaust system for healthy residential bathrooms;

[0022] Figure 2 This is the appearance diagram of the connection between the point exhaust duct and the toilet;

[0023] Figure 3 This is a top view of the connection between the point exhaust duct and the toilet;

[0024] Figure 4 This is the main view of the connection between the point exhaust duct and the toilet;

[0025] Figure 5 This is a side view of the connection between the point exhaust duct and the toilet;

[0026] Figure 6 Air flow path diagram for point-coupled global exhaust system in healthy residential bathrooms;

[0027] Figure 7 This is a performance test result diagram of the point-coupled global exhaust system for healthy residential bathrooms.

[0028] Explanation of the serial numbers in the figure: 1. Point exhaust system; 2. Global exhaust system; 3. Stepless variable frequency speed regulation fan; 4. Point exhaust branch pipe; 5. Point exhaust vent; 6. Toilet water supply pipe; 7. Toilet sewage pipe; 8. Global exhaust vent; 9. Exhaust fan; 10. Constant air volume regulating valve; 11. Global exhaust branch pipe; 12. Air shaft; 13. Non-powered hood. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0033] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0034] It should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and may encompass internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0035] like Figure 1 As shown, this embodiment provides a point-coupled global exhaust system for healthy residential bathrooms. Its core is to achieve efficient removal of bathroom odor pollutants through the collaborative working mode of "local point exhaust + global space exhaust". It mainly includes the following components:

[0036] Point exhaust system 1: used to form local high-intensity exhaust at the toilet location to quickly reduce the peak of high-concentration pollutants, including stepless variable speed fan 3, point exhaust branch pipe 4 and point exhaust port 5;

[0037] Global exhaust system 2: used to remove residual pollutants escaping into the bathroom space and achieve cascade purification, including global exhaust vents 8, exhaust fans 9, constant air volume control valves 10, and global exhaust branch pipes 11;

[0038] Exhaust converging channel: used to gather the exhaust airflow of point exhaust system 1 and global exhaust system 2, and finally discharge it to the outside.

[0039] Among them, the connection mode and relative position relationship between the point exhaust branch pipe 4 and the toilet water supply pipe 6 and the toilet sewage pipe 7 are as follows: Figure 2-5 As shown in the figure, the integrated pipe design avoids taking up extra bathroom space; the exhaust air flow path of the whole system is as follows Figure 6 As shown, a complete airflow organization of "local collection → spatial capture → centralized discharge" is formed.

[0040] As a preferred embodiment provided in this embodiment, the point exhaust system 1 is a directional control system for high-concentration pollutants in the toilet area, and its specific structure is as follows:

[0041] Point exhaust vent 5: It is modified from the toilet flush outlet. By adding a toilet water supply bypass pipe, the function is converted. In the non-exhaust state, it still serves as a clean water outlet, and switches to an exhaust inlet in the exhaust state.

[0042] Point exhaust branch pipe 4: Made of corrosion-resistant pipe, one end is connected to the point exhaust port 5, and the other end is connected to the air shaft 12 through the stepless variable speed blower 3. The pipe is arranged in parallel with the toilet water supply pipe 6 and sewage pipe 7 to avoid cluttered pipes;

[0043] Stepless variable speed fan 3: Installed on the point exhaust branch pipe 4, it can dynamically adjust the speed according to the pollutant concentration to achieve precise control of the air volume and ensure that high-concentration pollutants are efficiently extracted and discharged.

[0044] As a preferred embodiment provided in this embodiment, the global exhaust system 2 is used to treat residual pollutants escaping into the bathroom space, and its specific composition is as follows:

[0045] Global exhaust vent 8: Installed on the bathroom ceiling, preferably at the intersection of airflow above the shower area and toilet area. A louvered structure can be used to ensure uniform capture of odors in the space.

[0046] Global exhaust branch pipe 11: one end is connected to the global exhaust port 8, and the other end is connected in series with the exhaust fan 9 and the constant air volume regulating valve 10 and then connected to the air shaft 12;

[0047] Constant air volume regulating valve 10: used to stabilize the exhaust volume of the global exhaust system 2 to prevent the exhaust effect from being affected by fluctuations in pipe network resistance;

[0048] Exhaust fan 9: provides the power source for global exhaust, and forms a coordinated operation mechanism with the fan of the point exhaust system 1.

[0049] As a preferred implementation provided in this embodiment, the exhaust converging channel includes:

[0050] Air shaft 12: A common exhaust passage that runs vertically through the building floors and is used to collect airflow from the point exhaust system 1 and the global exhaust system 2;

[0051] Unpowered hood 13: Installed on the top of the air shaft 12, it uses the negative pressure generated by the outdoor natural wind to enhance the exhaust power, while preventing rainwater and debris from entering the air shaft.

[0052] The above-mentioned point-coupled global exhaust system for healthy residential bathrooms achieves odor control through a "step-by-step capture and cascade purification" approach. The specific working process is as follows:

[0053] Point exhaust stage (pollutant peak control): When a person uses the toilet, a high concentration of odor pollutants (mainly ammonia, hydrogen sulfide, etc.) will instantly be generated inside the toilet. At this time, the toilet flush outlet is switched to the point exhaust outlet 5 through the water supply bypass pipeline. Driven by the stepless variable frequency speed regulation fan 3, a negative pressure airflow is formed in the point exhaust branch pipe 4. High-concentration pollutants are directly sucked into the pipeline through the point exhaust outlet 5 and quickly discharged into the air shaft 12 through the point exhaust branch pipe 4. The core function of this stage is to "intercept the source" before the pollutants spread. During the high pollution period of 0-5 minutes after using the toilet, the peak concentration of pollutants is weakened by high-intensity local exhaust to minimize their spread to the bathroom space.

[0054] Global exhaust stage (residual purification in space): Although the point exhaust system 1 has intercepted most of the pollutants, a small amount of odor will still escape into the bathroom space environment due to factors such as people standing up and clothes. At this time, the global exhaust system 2 is started synchronously: the exhaust fan 9 runs to generate a stable airflow, and the constant air volume regulating valve 10 ensures that the global exhaust volume is not affected by the pressure of the pipe network; the residual pollutants that escape into the space gather toward the ceiling under the action of air convection, enter the global exhaust branch pipe 11 through the global exhaust port 8, and finally merge into the air shaft 12. This stage realizes the secondary capture of "escaped" pollutants, forming a cascade purification effect (such as Figure 3 global airflow path).

[0055] Convergence and discharge stage: The airflows of the point exhaust system 1 and the global exhaust system 2 converge in the air shaft 12. Under the auxiliary exhaust action of the unpowered hood 13, the mixed airflow is stably discharged to the outside, completing the entire exhaust process.

[0056] In the total exhaust volume of the system, the ratio of point exhaust volume to global exhaust volume is 1:1 (i.e. 50% each). This ratio is determined through preliminary debugging and can take into account the balance of local control and space purification effects.

[0057] To verify the effectiveness of the proposed point-coupled global exhaust system for healthy residential bathrooms, a system effectiveness test was conducted. The experimental chamber was 3.38m long, 1.9m wide, and 2.35m high, and the exhaust system was the proposed point-coupled global exhaust system. The pollution source at the toilet was replaced with NH3, and the pollution source was set as a surface source. The ammonia gas used to simulate the pollutant had an emission velocity of 0.05m / s and a concentration of 5×10 -6 kg / m 3 The ventilation frequency of the experimental chamber is 5 times / hour. Keeping the total ventilation frequency unchanged, changing the ratio of the exhaust volume at the point to the total exhaust volume (i.e.: Q' / Q), monitoring the NH3 concentration at the breathing height of the toilet user. The experimental test results, such as Figure 7 As shown. The proportion of point exhaust volume is significantly positively correlated with the control effect. When the proportion of point exhaust volume is 10%, the sewage discharge enhancement effect is initially apparent, and the peak value of pollutants is reduced by 52.3% compared with the conventional global exhaust system (i.e. Q' / Q=0), but it still takes 1 hour to completely discharge pollutants to the standard limit. When the proportion of point exhaust volume is increased to 20%, the peak value of pollutant concentration drops sharply to 7.083mg / m 3 , the reduction rate reached 93.7%, and the nonlinear gain effect was significant. Furthermore, when the point exhaust volume ratio increased to 30% and 50%, the peak pollutant concentration decreased by 97.0% and 98.1% respectively. Among them, the peak value corresponding to the working condition with a point exhaust volume ratio of 50% was as low as 2.124 mg / m 3 , achieving a significant peak reduction in pollutant concentrations around the toilet. It can be seen that when the point exhaust volume accounts for 50%, the pollutant emission effect is optimal. Therefore, the proposed method of using the point exhaust system 1 to reduce pollutant peak emissions and the global exhaust system 2 to perform cascaded pollutant emissions, while also determining a 1:1 exhaust volume distribution ratio, can effectively improve the efficiency, convenience, and practicality of healthy residential bathroom exhaust systems.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A point-coupled global exhaust system for healthy residential bathrooms, characterized in that: include: A point exhaust system is used to generate a local exhaust airflow at the toilet location, and the point exhaust port of the system is set at a predetermined position of the toilet; A global exhaust system is used to generate a global exhaust airflow in the bathroom, and the global exhaust port of the system is arranged in the top area of ​​the bathroom; An exhaust converging channel is provided, wherein the odorous gas pollutants collected by the point exhaust system and the global exhaust system are all converged into the exhaust converging channel.

2. A point-coupled global exhaust system for healthy residential bathrooms according to claim 1, characterized in that: During the high-pollution period after people use the toilet, the point exhaust system is used to weaken the concentration peak of high-concentration pollutants and inhibit their diffusion into the bathroom space environment; for odor pollutants that are not effectively discharged by the point exhaust system, the global exhaust system is used to achieve synchronous cascade discharge.

3. According to claim 1, a point-coupled global exhaust system for healthy residential bathrooms is characterized in that: The exhaust converging channel is an air shaft, and a non-powered wind hood is provided on the top of the air shaft for discharging odorous gas pollutants to the outside.

4. A point-coupled global exhaust system for healthy residential bathrooms according to claim 3, characterized in that: The point exhaust system includes a stepless variable speed fan and a point exhaust branch pipe. One end of the point exhaust branch pipe is connected to the point exhaust port, and the other end is connected to the air shaft through the stepless variable speed fan.

5. A point-coupled global exhaust system for healthy residential bathrooms according to claim 4, characterized in that: When people use the toilet, high-concentration odor pollutants will be generated inside the toilet; at this time, the toilet flush outlet is switched to a point exhaust outlet, and the high-concentration odor pollutants are discharged into the air shaft through the point exhaust branch pipe under the action of the stepless variable speed control fan.

6. A point-coupled global exhaust system for healthy residential bathrooms according to claim 3, characterized in that: The global exhaust system includes an exhaust fan, a constant air volume regulating valve and a global exhaust branch pipe. One end of the global exhaust branch pipe is connected to the global exhaust port, and the other end is connected to the air shaft through the exhaust fan and the constant air volume regulating valve in sequence.

7. A point-coupled global exhaust system for healthy residential bathrooms according to claim 6, characterized in that: With the operation of the point exhaust system, some odor pollutants will escape into the bathroom space environment; at this time, the global exhaust vents are used to discharge the odor pollutants that have escaped into the bathroom space environment into the air shaft through the global exhaust branch pipe under the action of the exhaust fan.

8. The point-coupled global exhaust system for healthy residential bathrooms according to claim 1, characterized in that: The ratio of the exhaust volume of the point exhaust system to that of the global exhaust system is a predetermined ratio, and the predetermined ratio includes 1:

1.

9. A point-coupled global exhaust system for healthy residential bathrooms according to claim 4 or 6, characterized in that: The exhaust volumes of the point exhaust system and the global exhaust system are respectively regulated by a stepless variable speed control fan located on the point exhaust branch pipe and a constant air volume regulating valve located on the global exhaust branch pipe.

10. The point-coupled global exhaust system for healthy residential bathrooms according to claim 1, characterized in that: By adding a toilet water supply bypass pipe, the toilet flush outlet can be converted into a point exhaust outlet with exhaust function.

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