CN109183928B

CN109183928B - Exhaust device

Info

Publication number: CN109183928B
Application number: CN201811110935.XA
Authority: CN
Inventors: 张自强
Original assignee: Beijing Hanwei Hi Tech Co ltd
Current assignee: Beijing Hanwei Hi Tech Co ltd
Priority date: 2018-09-22
Filing date: 2018-09-22
Publication date: 2023-10-20
Anticipated expiration: 2038-09-22
Also published as: CN109183928A

Abstract

The invention discloses an exhaust device which comprises an exhaust main pipe, a liquid outflow pipe and a control host, wherein an exhaust port of the exhaust main pipe is communicated with the side wall of the liquid outflow pipe, and an exhaust element, a stop valve, a valve controller and a liquid flow detection module are arranged in the exhaust main pipe. The exhaust device can exhaust gas generated by people at any time when the people are convenient, avoids odor diffusion, has simple structure and reasonable operation logic, not only realizes timely and effective odor removal, but also does not influence the existing water-saving flushing and other characteristics of the corresponding sanitary appliance, and truly realizes health, energy conservation and environmental protection.

Description

Exhaust device

Technical Field

The invention relates to an exhaust device, in particular to an exhaust device, which further relates to the field of odor removal in toilets.

Background

The application and popularization of the closestool are convenient for people to use the closestool, the living quality is improved, but the odor generated when the closestool is used for defecating can not be rapidly and effectively removed, especially in a common indoor bathroom, the odor is inevitably diffused everywhere in the slow exhaust process of the exhaust fan, and great trouble is brought to the physical and mental health of people.

Existing solutions for deodorizing by installing deodorizing means are the following:

1. the odor is collected through the toilet seat pad and then is discharged back to the environment after being subjected to chemical and physical adsorption treatment, so that the odor is not thoroughly absorbed, and the odor diffusion pollution cannot be thoroughly avoided; secondly, the adsorption of the adsorption medium is incomplete, pollution and passivation are easy, and the discharged tail gas still causes secondary pollution;

2. the toilet seat cushion or the inner side is flushed with Kong Caiji odor, the external exhaust collecting device is used for deodorizing, the odor is directly discharged to the exhaust passage or the outside, the measure has higher requirements on the installation environment, an exhaust pipeline is required to be paved, and the installation space is limited;

3. flushing Kong Caiji odor through the inner side of the closestool and discharging the gas into a sewer through a water tank through hole; the method is basically suitable for most scenes except for the requirements on the forms of a sewer and a closestool, is a reasonable solution thought, but the device provided by the existing solutions can not perfectly solve the perfect combination of exhaust and water-saving flushing, the water-saving performance of the closestool can be reduced due to the influence of the deodorizing device on the siphon effect, and the polluted water vapor generated by flushing can not be effectively removed due to the fact that the work can not be immediately recovered after flushing, so that the exhaust deodorizing effect is greatly reduced, and the problems cause the defects that the solutions can not be overcome and cannot well meet the actual application.

The patent retrieval system of the national intellectual property office network is utilized to carry out detailed retrieval to obtain the following prior art information, and the prior art is simply introduced and analyzed so as to better understand the inventive concept and show the technical advantages and the technical characteristics of the invention.

Prior art 1: the application number CN02205113.9 discloses a toilet, wherein the control end of the electromagnetic valve is connected with a control pull wire for linkage on a manual flushing valve, namely the electromagnetic valve can be stopped only when the water tank is manually operated to flush water, and the siphon effect of the toilet cannot be effectively exerted when the toilet is directly flushed; when the water tank of the closestool fails or stops water, and the closestool is required to be flushed by manually pouring water, the electromagnetic valve does not participate in work, so that the closestool cannot generate a siphon effect;

prior art 2: the application number CN200920029118.1 discloses a toilet, wherein the deodorizing pipeline is provided with an anti-odor return device, but the technical scheme still does not consider the siphon type sewage pipe inlet position and the influence of the siphon type sewage pipe inlet position on the sewage water saving effect, and only the deodorizing function is mentioned; also, when the toilet tank fails or stops water, and the toilet is required to be flushed by manually pouring water, the anti-odor return device does not participate in work, so that the toilet cannot generate a siphon effect;

Prior art 3: application number CN02109390.3 discloses an induced draft toilet bowl, which cannot effectively exert the siphon effect of the toilet bowl when the toilet bowl is directly flushed;

prior art 4: the application number CN03208299.1 discloses an acoustic odor-absorbing toilet, which cannot effectively exert the siphon effect of the toilet when the toilet is directly flushed, and has a complex structure;

prior art 5: the application number CN200520000309.7 discloses an improved device of the deodorizing closestool, which has a complex structure, more refitting to the closestool structure and great refitting difficulty;

prior art 6: the application number CN200820076350.6 discloses a deodorizing type toilet which is used for discharging gas outdoors, and has the problems of limited application and secondary pollution;

prior art 7: the application number CN201210053662.7 discloses a negative pressure water seal deodorizing device of a toilet, which can not effectively exert the siphon effect of the toilet when the toilet is directly flushed by pouring water, and has a complex structure;

prior art 8: the application number CN201410221444.8 discloses a production method of a odorless and less bonding toilet and a plastic toilet, but the electromagnetic valve is mainly used for controlling water mist to spray to clean bonding residual feces of the toilet, and odor generated during toilet use is not removed;

Prior art 9: the application number CN201610793608.3 discloses a one-piece odor-exhausting toilet, which cannot effectively exert the siphon effect of the toilet when the toilet is directly flushed, and has a complex structure;

prior art 10: the application number CN201620138405.6 discloses a toilet ventilation and drainage device, which cannot effectively exert the siphon effect of the toilet when the toilet is directly flushed, and has a complex structure;

prior art 11: application number 201710958462.8 discloses a deodorant toilet, wherein the purpose of the "first electromagnetic throttle valve against gas backflow" is to prevent the backflow of odors when the blower is stopped; the second electromagnetic throttle valve is arranged on the water supplementing pipe and is used for controlling the water supplementing pipeline; it also has the problems that when the toilet is directly flushed, the siphon effect of the toilet cannot be effectively exerted, and the structure is complex

Prior art 12: the application number CN201720595116.3 discloses a deodorizing system of a sinking water storage tank type closestool, which cannot effectively exert the siphon effect of the closestool when the closestool is directly flushed, and has a complex structure;

prior art 13: the application number CN201720700421.4 discloses a household air-dispersing deodorizing device for a sitting type toilet, which can not effectively exert the siphon effect of the toilet when the toilet is directly flushed by pouring water;

Prior art 14: the application number CN201720963264.6 discloses a negative pressure deodorization system of a flushing pipe of a water closet, which can not effectively exert the siphon effect of the water closet when the water closet is directly poured and flushed, and has a complex structure;

prior art 15: the application number CN201721050298.2 discloses a toilet bowl with a ventilation pumping device convenient to install, and the siphon effect of the toilet bowl cannot be effectively exerted when the toilet bowl is directly flushed, and the structure is complex;

prior art 16: the application number CN201810135390.1 discloses a sanitary device and a high-efficiency air-pumping closestool, which can not effectively exert the siphon effect of the closestool when the closestool is directly flushed by pouring water;

prior art 17: US2058436a discloses a self-priming toilet which also has a complex structure and cannot effectively exert the siphon effect of the toilet when the toilet is directly flushed;

prior art 18: US2203111a discloses an exhaust type toilet, which cannot effectively exert the siphon effect of the toilet when the toilet is directly flushed, and has a complex structure;

prior art 19: US2227920 discloses an exhaust type toilet, which cannot effectively exert the siphon effect of the toilet when the toilet is directly flushed, and has a complex structure;

Prior art 20: US2297935a discloses an exhaust type toilet, which cannot effectively exert the siphon effect of the toilet when the toilet is directly flushed, and has a complex structure;

prior art 21: US2329221a discloses an exhaust type toilet, which cannot effectively exert the siphon effect of the toilet when the toilet is directly flushed, and has a complex structure;

prior art 22: US2351560a discloses a deodorizing toilet which discharges gas outdoors, is limited in application and has problems of secondary pollution;

prior art 23: US2575778A discloses an exhaust type toilet, which cannot effectively exert the siphon effect of the toilet when the toilet is directly flushed, and has a complex structure;

prior art 24: US2575778A discloses an exhaust type toilet, which cannot effectively exert the siphon effect of the toilet when the toilet is directly flushed, and has a complex structure;

prior art 25: US4165544a discloses a deodorizing toilet which discharges gas outdoors, is limited in application and has problems of secondary pollution;

prior art 26: US4494255a discloses a vented toilet which vents gases outdoors, is limited in application and has problems of secondary pollution;

Prior art 27: US4989276a discloses a vented toilet which vents gases outdoors, is limited in application and has problems of secondary pollution;

furthermore, in the art, the inventors of the present invention have also retrieved prior art 28-32: in the prior art, the multifunctional water gas valve is provided with a valve body, the valve body is sleeved at the upper end part of an exhaust pipe, a floater sleeved on the exhaust pipe is arranged below the valve body, the valve actions of the multifunctional water gas valve are controlled by the water level change in a water tank, the water saving requirements of all flushing modes cannot be met, and the state of exhaust gas can not be recovered in time after flushing, namely, in the prior art, the function of exhausting and deodorizing is mechanically linked with a toilet water tank, and the mechanical linkage of relevant valves in the exhaust pipe is realized through the water level in the toilet water tank, so that the exhausting and flushing are realized; in other words, in the prior art, on one hand, the exhaust device does not link the flushing action of the toilet with the exhaust element, and if the exhaust element is in a stop state, the exhaust operation is not started due to flushing; on the other hand, when external water flow, such as the water basin or the water bucket water is used for pouring water flow into the closestool, the water flow in the water tank of the closestool is not changed in any way by means of the valve control mode of water level linkage of the water tank, so that a stop valve is not started, and the siphon effect of the closestool is greatly reduced; on the other hand, the water in the toilet tank is used for flushing the toilet, but the timely exhaust element works after flushing, the closed stop valve which is opened by means of water buoyancy in the toilet tank cannot be timely restored to be opened for effective exhaust, so that the problem that high pollution water vapor excited by flushing cannot be timely discharged after flushing is caused, and the problems are also a few outstanding technical problems in the prior art.

For this reason, the present invention also retrieves other related prior art, which are listed below, so that those skilled in the art can better understand the technical features of the present invention.

Prior art 33: the application number CN201711200845.5 discloses a motor-driven control type water storage deodorization sewer pipe device, which is based on the existing S-shaped water pipe (2), an upper-down drainage electric control detection water storage structure is designed, whether a sewer mouth of a water pool is in a drainage state is judged through detection of a designed water flow rate sensor (9), when the sewer mouth of the water pool is in the drainage state, drainage is realized through a part section of the S-shaped water pipe (2) through a communicated drain pipe (5), and clean water is led to be stored through a water guide pipe (4) of a butt joint water outlet faucet based on a disconnected first electric control valve (7); the water pipe is in a non-drainage state, and the water stored in the water pipe (4) is injected into the S-bend water pipe (2) based on the communicated first electric control valve (7) and the disconnected second electric control valve (8), so that clean water is reserved in the S-bend water pipe (2), the upward flushing of peculiar smell in the water pipe is thoroughly stopped, and the practical application effect of a sewer pipe is effectively improved; however, the prior art is a modification of a sewer, does not relate to an exhaust pipeline, and cannot be applied to the technical field of the invention;

Prior art 34: the application number CN201711200864.8 discloses a high-precision detection triggering type deodorization sewer pipe, but the prior art is a modification of a sewer, and does not relate to an exhaust pipeline, so that the sewer pipe cannot be applied to the technical field of the invention;

prior art 35: the application number CN201711201024.3 discloses an intelligent water storage deodorization sewer pipe system, but the prior art is a modification of a sewer, and does not relate to an exhaust pipeline, so that the intelligent water storage deodorization sewer pipe system cannot be applied to the technical field of the invention;

prior art 36: the application number CN200720139482.4 discloses a purification and sterilization device for kitchen washing wastewater, which uses a magnetic float, but the prior art is a hydraulic modification of a washing system, and does not involve an exhaust pipeline, so that the device cannot be applied to the technical field of the invention;

prior art 37: the application number CN201410418197.0 discloses a device for quickly establishing a siphon pipeline and a siphon method thereof, the device comprises a siphon pipeline (1) and a water pump (2), a water inlet (11) of the siphon pipeline (1) is inserted into a water source (91) to be absorbed, one end of the water pump (2) is communicated with the siphon pipeline (1) through a water pump water outlet pipe (21), the other end of the water pump (2) is used for pumping water from a lower water source (92) through a water pump water inlet pipe (22), the siphon pipeline (1) is provided with a pipe bottom valve (12) at the lower side of the joint of the water pump water outlet pipe (21) and the siphon pipeline (1), the pipe bottom valve (12) is positioned at the lower side of a water inlet (11) of the siphon pipeline (1) in the vertical direction, and the water pump water outlet pipe (21) is provided with a water pump valve (211), so that the prior art can provide convenience for the next siphon occurrence, does not involve an exhaust pipeline, has great difficulty in the transfer in the technical field, and cannot be applied to the technical field of the invention;

From the above, it can be seen that the existing solutions have problems summarized in that: the gas collecting effect is poor, the hidden trouble of secondary pollution exists incompletely in treatment, the water saving performance of the closestool is destroyed by influencing the flushing effect, and the exhaust work cannot be immediately recovered after flushing, so that the effort is short. In a word, the existing solution is not too much changed to the existing toilet, or the influence of the exhaust port on the siphon water-saving effect is not strictly solved, or the problem of exhaust deodorization is not completely solved, so that the actual application requirements are not widely and thoroughly met.

Disclosure of Invention

In view of the above-mentioned problems, there is no solution given in the prior art: on one hand, the exhaust device is not linked with the flushing water, and the effective exhaust cannot be immediately recovered after the flushing water, so that high-pollution water vapor excited by the flushing water cannot be timely discharged; on the other hand, when external water flows, such as water flows from a basin or a bucket, are used to pour water into the toilet, the stop valve cannot perform corresponding actions, so that the siphon effect of the toilet itself is greatly reduced. The invention aims at solving the problems, and the invention is used for reversing the problems, and the linkage relation between the water tank and the exhaust device is respectively independent, so that the exhaust device is provided, and the better exhaust and deodorization capability can be obtained under the condition that the structure of the toilet or the toilet in the prior art is basically not changed or only slightly changed.

To achieve the technical purpose, the present invention contemplates several technical solutions, and extracts the commonalities between the technical solutions to form the summary of the invention and the claims, and the technical solutions are as follows:

the utility model provides an exhaust device, includes the exhaust main pipe, liquid outlet pipe and control host computer, the gas vent of exhaust main pipe with the lateral wall intercommunication of liquid outlet pipe, set up exhaust component, stop valve, valve controller and liquid flow detection module in the exhaust main pipe, its characterized in that, liquid flow detection module sets up near the gas vent, liquid flow detection module detects the liquid flow state of liquid outlet pipe produces the liquid flow signal, and will liquid flow signal transfer to the control host computer, the control host computer is according to liquid flow signal control valve controller realizes the closure or opening of stop valve and the stop or the start of exhaust component.

Further, when the liquid flow detection module detects that liquid flow occurs in the liquid outflow pipe, the control host controls the valve controller to close the stop valve and the exhaust element to stop working; when the liquid flow detection module detects that liquid flow in the liquid outflow pipe disappears, the control host controls the valve controller to release the stop valve, the exhaust element is started and stops after a time delay operation is carried out for a specified time.

Further, the exhaust device also comprises a human body sensor; the human body sensor sends out a human signal when detecting that a person exists, and the control host starts the exhaust element at the moment; the human body sensor sends out an unmanned signal when detecting that a person leaves, and the control host controls the exhaust element to stop after a time delay operation is carried out for a specified time; in the human body sensor detection process, no matter whether the human body sensor sends out a human signal or an unmanned signal, as long as the liquid flow detection module detects that liquid flow occurs in the liquid outflow pipe, the control host immediately stops the work of the air exhaust element and prohibits starting, and when the liquid flow detection module detects that liquid flow in the liquid outflow pipe disappears, the control host starts the work of the air exhaust element and works according to the state of the human signal or the unmanned signal detected by the human body sensor. As will be appreciated by those skilled in the art, when a person comes, the human body sensing detector sends a human signal, the person walks to send an unmanned signal, then the unmanned signal is kept, the person starts to work all the time when the person starts to work, the time delay work is started when walking, the reset timer continues to work before the end of the countdown, the countdown is started when the person leaves again, if the person cannot be detected only occasionally before leaving, the countdown can be reset in time as long as the time delay is not finished and the human signal is received again, the exhaust element continues to work, and the working state is restored immediately after the flushing is stopped.

Further, the liquid flow detection module comprises a liquid detection circuit and a liquid flow detection sensor, wherein the liquid flow detection sensor is arranged on the inner side of the tail end of the exhaust port.

Further, the liquid flow detection sensor is of a float magnetic force switch type, or an electrode sensing type, or a microwave reflection type, or a mechanical touch type.

Further, the exhaust element is a fan or a vacuum adsorption device.

Further, the exhaust main pipe comprises a gas collecting pipeline and an exhaust pipeline, and the gas collecting pipeline and the exhaust pipeline are connected in series.

Further, one end of the gas collecting pipe is an air inlet, the other end of the gas collecting pipe is connected with the exhaust pipe in series, and the exhaust element, the stop valve, the valve controller and the liquid flow detection sensor are sequentially arranged in the exhaust pipe along the direction from the air inlet of the gas collecting pipe to the air outlet of the exhaust pipe. It will be appreciated by those skilled in the art that the order of arrangement of the vent element, the shut-off valve, the valve controller and the flow detection sensor need not be such as long as the flow detection is sufficient to complete the opening and closing of the vent element, and that such embodiments have been generally described above;

Further, the liquid flow detection module and the human body sensor are connected with the control host in a wired or wireless mode; the valve controller is positioned in the cavity of the stop valve.

Further, the stop valve comprises a valve body, a valve plate and a spring, the valve plate slides forwards and backwards under the action of the spring and is in an elastic normally-closed state at ordinary times, and the valve plate can be passively opened when the exhaust element works, otherwise, the valve plate is in an automatic closing state.

Further, the air inlet of the air collecting pipeline is connected with an overflow pipe in a toilet water tank, the liquid outflow pipe is a toilet siphon pipe or a sewer drain pipe, and the axis of the pipeline where the air outlet of the air exhaust pipeline is connected with the liquid outflow pipe is inclined downwards to form an included angle of 5-175 degrees with the horizontal direction; a filter screen is arranged in the gas collecting pipeline.

Further, a gap exists between the air inlet of the air collecting pipeline and the overflow pipe in the toilet water tank, when the water is not flushed, the gap is closed by water, the air inlet is used for extracting air in the overflow pipe, when the water is flushed, the gap supplements air for the flushing channel, and the gap is used as the overflow pipe when the water level is too high.

Further, a sealing ring is arranged outside the exhaust pipeline and is arranged on a through hole at the bottom of the toilet water tank, and an exhaust port of the exhaust pipeline is communicated with the toilet siphon pipeline.

Further, the gas collecting pipeline is a double-pipe gas inlet, a first gas inlet of the two gas inlets of the gas collecting pipeline is hermetically connected with the overflow pipe in the toilet water tank, and when the water is not flushed, a second gas inlet extends downwards below the water surface of the toilet water tank in the same direction, and the gas collecting pipeline extracts gas in the overflow pipe; when flushing, the second air inlet is suspended to serve as an air supplementing port of the flushing pipeline, and serves as a water overflow pipeline when the water level is too high.

Further, a through hole of the exhaust device is reserved at the bottom of the toilet water tank; and an interface of the exhaust port is reserved at the position, close to the sewage outlet, of the closestool.

Further, the using method of the exhaust device is characterized in that when a human body sensor detects that a person exists, a host is controlled to start an exhaust element, a gas collecting pipeline extracts gas from an overflow port of a toilet, the gas in a cavity of the toilet enters the gas collecting pipeline through a flushing hole and a flushing channel along the inner edge of the toilet, a stop valve is passively opened under the action of air pressure, and the gas enters the exhaust pipeline through the stop valve and is then discharged into a sewer; when the closestool is flushed, no matter the water tank button is pressed or water is directly poured into the closestool, the liquid flow detection module can detect the occurrence of liquid flow, the control host immediately controls the valve controller to close the stop valve closing pipeline, the tightness of the siphon pipeline is ensured, and the operation of the exhaust element is stopped; when the liquid flow detection module detects that liquid flow disappears, the control host controls the valve controller to release the stop valve to be in an elastic normally-closed state, and the exhaust element is started to work, and the stop valve is passively opened under wind pressure to allow the air flow to pass through.

As described above, the toilet exhaust deodorizing device can discharge the gas generated by people at any time when the people are convenient, eliminates the odor diffusion, has simple structure and reasonable operation logic, not only realizes timely and effective odor removal, but also ensures the siphon water-saving effect of toilet flushing, and truly achieves health, energy conservation and environmental protection.

Compared with the prior art, the invention has the beneficial effects that: the intelligent exhaust deodorization device not only can realize intelligent exhaust deodorization by simply modifying a conventional closestool, but also can realize intelligent exhaust deodorization more conveniently at lower cost by simply modifying a die for a novel closestool; in a word, the solution provided by the invention can not only collect and discharge odor efficiently and rapidly, but also ensure the existing water-saving flushing effect of the closestool, and can also immediately resume work to remove high-pollution water vapor excited by flushing after flushing, which is incomparable with the prior art.

Drawings

FIG. 1 is a schematic system diagram of an exhaust apparatus according to the present invention.

Fig. 2 is a schematic cross-sectional view of a single pipe inlet of the main exhaust pipe of the present invention.

Fig. 3 is a schematic cross-sectional view of a double pipe inlet of the main exhaust pipe of the present invention.

FIG. 4 is a schematic view of the external overall appearance of the main exhaust pipe body of the present invention.

FIG. 5 is a schematic diagram of a float-type flow detection module according to the present invention.

FIG. 6 is a schematic diagram of an electrode-type flow detection module according to the present invention.

FIG. 7 is a schematic diagram of a microwave-type flow detection module according to the present invention.

FIG. 8 is a schematic diagram of a mechanical flow detection module according to the present invention.

Figure 9 is a schematic diagram of a toilet perforation modification in accordance with the present invention.

Fig. 10 is a schematic diagram of a control system according to the present invention.

Figure 11 is a schematic view of a reserved vent hole at the bottom of a toilet siphon according to the present invention.

Figure 12 is a schematic diagram of the reserved vent hole at the toilet drain according to the present invention.

In the figure, 1-1: an exhaust main pipe; 1-2: a liquid outflow pipe; 1-3: a control host; 1-4: a human body sensor; 1-5: a power supply; 1-6: a liquid flow detection circuit; 1: a gas collecting pipe; 2: an exhaust element; 3: a stop valve; 4: an exhaust duct; 5: a flow detection sensor; 6: a seal ring; 7: a valve controller; 8: a filter screen; 2-1: a water supplementing pipe interface; 3-1: a water supplementing pipe interface; 3-2: a water supplementing pipe interface; 4-1: a siphon bottom exhaust port; 4-2: a blow-down cavity exhaust interface; 51-1: a magnetic float; 51-2: a magnetic switch; 51-3: a float water flow module wire; 52-1: an electrode 1;52-2: an electrode 2;52-3: electrode type water flow module lead wire; 53-1: a microwave transmitting end; 53-2: a microwave receiving end; 53-3: a microwave water flow module wire; 54-1: a fluid contact end; 54-2: a loop contact end; 54-3: a mechanical water flow module wire; 6-1: a water tank via hole; 6-2: a siphon exhaust port;

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the following, various commodity models or terms such as "first", "second", "up", "down", "left", "right", "front", "back", "far", "near" and the like are technical terms that are already known in the art and some positional or spatial definitions for convenience in describing the embodiments are not limiting of the present invention, and are not explained in any greater extent.

In order to solve the problems, the invention collects the flushing signal from the source drain pipe through the solution of detecting the flow of the exhaust port and forcibly closing the stop valve by the valve controller, thereby avoiding the defect of controlling the stop valve through the water level detection of the water tank singly and realizing that no matter any form is adopted for flushing the toilet, the siphon water-saving effect is not affected; the air exhausting element can be controlled in real time according to the water flow in the siphon pipe, the stop during flushing is realized, the air exhausting work is started immediately after the end of flushing, the siphon water saving function is prevented from being invalid when the toilet water tank is not used for flushing, the air exhausting and deodorizing work is ensured to be carried out in time after the flushing, and compared with other existing schemes, the air exhausting and deodorizing device has outstanding advantages.

Further, the technical scheme adopted by the invention is as follows:

the utility model provides an exhaust device, includes the exhaust main pipe, liquid outlet pipe and control host computer, the gas vent of exhaust main pipe with the lateral wall intercommunication of liquid outlet pipe, set up exhaust component, stop valve, valve controller and liquid flow detection module in the exhaust main pipe, its characterized in that, liquid flow detection module sets up near the gas vent, liquid flow detection module detects liquid outlet pipe liquid flow state produces the liquid flow signal, and will the liquid flow signal is transmitted to the control host computer, the control host computer is according to liquid flow signal control the valve controller realizes closing or opening of stop valve and the stop or the start-up of exhaust component.

Further, when the liquid flow detection module detects that liquid flow occurs in the liquid outflow pipe, the control host controls the valve controller to close the stop valve and controls the exhaust element to stop working; when the liquid flow detection module detects that the liquid flow of the liquid outflow pipe disappears, the exhaust element can be started no matter whether the exhaust element is working or not before, if no other operation actions exist, the exhaust unit can be stopped after the operation is delayed for a designated time.

Further, the exhaust device further comprises a human body sensor, when the human body sensor detects that a person exists, a person exists signal is sent to the control host, and the control host immediately starts the exhaust element to enter a working state; when a person leaves, the human body sensor detects an unmanned state, an unmanned signal is sent to the control host, and the control host controls the exhaust element to continue to work in a delayed mode for a specified duration and then stop; in addition, no matter the human body sensor sends out a human signal or no human signal, as long as the liquid flow detection module detects that the liquid flow occurs in the liquid outflow pipe, the control host immediately stops the operation of the air discharging element and prohibits the starting of the air discharging element, after the liquid flow signal of the liquid outflow pipe disappears, the control host starts the operation of the air discharging element and releases the starting restriction of the air discharging element, and after that, if the human body sensor does not detect the human body state and sends out the human signal, the air discharging element stops after the time delay operation is designated for a long time.

Further, the liquid flow detection module comprises a liquid flow detection circuit and a liquid flow detection sensor, wherein the liquid flow detection sensor is arranged on the inner side of the tail end of the exhaust port; when the liquid flow detection sensor detects that liquid flow occurs or disappears in the liquid flowing out pipe, the liquid flow detection circuit can generate corresponding liquid flow state signals and transmit the corresponding liquid flow state signals to the control host.

Further, the liquid flow detection sensor is a float magnetic force switch type, or an electrode sensing type, or a microwave reflection type or a mechanical touch type; the float magnetic switch type liquid flow detection sensor comprises a magnetic float, a reed pipe and a wire, wherein when liquid flow occurs in the liquid outflow pipe, the magnetic float floats to trigger the reed pipe to act, and a signal is sent to the control host through the wire; the electrode sensing type liquid flow detection sensor comprises an electrode 1, an electrode 2 and a wire, when the liquid flow occurs in the liquid outflow pipe, the resistance value between the electrode 1 and the electrode 2 is instantaneously reduced, and the liquid flow detection sensor is transmitted to the control host through the wire; the microwave reflection type liquid flow detection sensor comprises a microwave transmitting end, a microwave receiving end and a wire, wherein when liquid flow occurs in the liquid outflow pipe, the microwave receiving end sends a signal to the control host; the liquid flow detection sensor is a mechanical touch type liquid flow detection sensor and comprises a liquid flow touch end, a loop conducting end and a wire, when the liquid flow outlet pipe has liquid flow, the liquid flow touch end is touched to deform to contact with a loop conducting contact to form a loop, and a signal is sent to the control host through the wire;

Further, the exhaust element is a fan or a vacuum adsorption device; whether the exhaust element is a fan or a vacuum adsorption device, the air exhaust element is required to drive air to flow from the air inlet to the air outlet, so that the negative pressure of the air inlet space is caused, and the purpose of exhaust is achieved.

Further, the exhaust main pipe comprises a gas collecting pipeline and an exhaust pipeline, and the gas collecting pipeline and the exhaust pipeline are connected in series;

further, one end of the gas collecting pipe is an air inlet, the other end of the gas collecting pipe is connected with the exhaust pipe in series, and the exhaust element, the stop valve, the valve controller and the liquid flow detection sensor are sequentially arranged in the exhaust pipe along the direction from the air inlet of the gas collecting pipe to the air outlet of the exhaust pipe;

further, the human body sensor and the liquid flow detection module are connected with the control host in a wired or wireless mode; the valve controller is positioned in the cavity of the stop valve;

further, the stop valve comprises a valve body, a valve plate and a spring, the valve plate slides forwards and backwards under the action of the spring and is in an elastic normally-closed state at ordinary times, the valve plate can be opened passively when the exhaust element works, and otherwise, the valve plate is in an automatic closing state.

Further, the air inlet of the air collecting pipeline is connected with an overflow pipe in the toilet water tank, and the liquid outflow pipe is a toilet siphon pipe or a sewer drain pipe.

Further, the gas collecting pipeline is a double-pipe gas inlet, a first gas inlet of the two gas inlets of the gas collecting pipeline is hermetically connected with the overflow pipe in the toilet water tank, and when the water is not flushed, a second gas inlet extends downwards below the water surface of the toilet water tank in the same direction, and the gas collecting pipeline extracts gas in the overflow pipe; when flushing, the second air inlet is suspended to serve as an air supplementing port of the flushing pipeline, and serves as a water overflow pipeline when the water level is too high;

further, the invention also relates to a using method of the exhaust device, which is characterized in that when the human body sensor detects that a person exists, the control host machine starts the exhaust element, the gas collecting pipeline extracts gas from the overflow port of the closestool, the gas in the cavity of the closestool enters the gas collecting pipeline through the flushing hole and the flushing channel along the inner edge of the closestool, the stop valve is passively opened under the action of air pressure, and the gas enters the exhaust pipeline through the stop valve and is then discharged into the sewer; when the human body sensor detects that a person leaves, the control host controls the exhaust element to work for a specified time in a delayed mode and then stop; when the closestool is flushed, no matter the water tank button is pressed or water is directly poured into the closestool, the liquid flow detection module sends a flushing signal to the control host, and the control host immediately controls the valve controller to close the stop valve closing pipeline, so that the tightness of the siphon pipeline is ensured, the work of the exhaust element is stopped, and the starting is forbidden; when the flushing signal disappears, the control host controls the valve controller to release the stop valve to be in an elastic normally-closed state, the operation of the exhaust unit is started, the start prohibition is released, the stop valve is passively opened under wind pressure, and the air flow is allowed to pass through and enter the exhaust state.

Further, the invention aims at solving the technical problems by the following technical scheme: the utility model provides an exhaust apparatus, includes the power, control host computer, human inductor, gas collecting channel, exhaust component, stop valve, valve controller, liquid flow detection module, exhaust duct and sealing washer, its characterized in that: the liquid flow detection module is connected with the control host; one end of the gas collecting pipeline is used as a gas inlet, an exhaust element and a stop valve are connected in series between the other end of the gas collecting pipeline and the exhaust pipeline, the tail end of the exhaust pipeline is provided with a gas outlet, and the valve controller is positioned in a cavity of the stop valve; the liquid flow detection module consists of a liquid flow detection circuit and a liquid flow detection sensor, and the liquid flow detection sensor is arranged at the inner side of the tail end of the exhaust port of the exhaust pipeline; the arrangement sequence of the exhaust element and the stop valve in the exhaust main pipe can be different.

The technical problem to be solved by the invention can be further solved by the following technical scheme that when the human body sensor detects the human signals, the human signals are sent to the control host; when the human body sensor detects that the human signal disappears, the time delay with the appointed duration can be entered, and when the time delay is finished, the unmanned signal can be sent to the control host, so that the unmanned signal can be prevented from being sent by mistake when the human signal is interrupted occasionally.

The technical problem to be solved by the invention can be further solved by the following technical scheme that when the liquid flow detection module detects that liquid flow exists, a liquid flow signal is sent to the control host; when the liquid flow is detected, the time delay with the designated time length is entered, and when the time delay is finished, a liquid flow-free signal is sent to the control host, so that the liquid flow-free signal can be prevented from being sent by mistake when the liquid flow signal is interrupted occasionally.

The technical problem to be solved by the invention can be further solved by the following technical scheme, and the closestool is provided by combining production, and a through hole of the exhaust device is reserved at the bottom of a closestool water tank; the joint of the exhaust port is reserved at the position of the closestool close to the sewage outlet, which does not affect siphoning; when the method is implemented, the air inlet of the exhaust device is connected to the overflow hole of the closestool, the exhaust pipeline extends out of the closestool through the through hole of the exhaust device reserved at the bottom of the closestool water tank, and the air outlet of the exhaust pipeline is connected to the position of the closestool close to the sewage outlet, which does not influence siphonage, and the interface of the air outlet is reserved. The exhaust deodorizing device is convenient for users to select and install, so that odor in the cavity of the closestool can be directly discharged into the sewer when the closestool is convenient, and in particular implementation, the original closestool structure is only slightly modified in production, and the closestool can be sold as a common closestool only by matching with two plugging pieces without increasing too much cost, so that the stock overstock risk caused by increasing functions is reduced; by adopting the scheme, the position of the exhaust port does not influence the siphon, so that the stop valve is not required to be provided with a valve controller, and the cost is saved.

The technical problem to be solved by the invention can be further solved by the following technical scheme, and in order to facilitate the installation and construction of the exhaust device, the bottom of the toilet water tank is pre-perforated with a through hole of the exhaust device before the existing type of toilet leaves the factory; the port connected with the exhaust port is pre-arranged on the toilet drain siphon; when the method is implemented, the air inlet of the exhaust device is connected to the overflow hole of the closestool, the exhaust pipeline extends out of the closestool through the through hole reserved at the bottom of the closestool water tank, the air outlet of the exhaust pipeline is connected to the closestool sewage siphon pipe, and the interface connected with the air outlet is pre-beaten; the exhaust deodorizing device can be arranged in a user-friendly way, so that odor in the cavity of the closestool can be directly discharged into the sewer when the user-friendly way is convenient, the mold in the production process is not required to be changed in a specific implementation, the original closestool is slightly modified before leaving the factory, and the closestool is sold as an ordinary closestool only by being matched with two plugging pieces, so that the cost is not increased too much, and the stock backlog risk caused by the increase of the functional model is reduced.

In order to adapt to various occasions, the exhaust device provided by the invention has the following different combination modes.

(1) The inlet form of the gas collecting tube may be classified into a single-tube inlet type and a double-tube inlet type.

(2) The main body can be divided into a main body built-in type and a main body built-out type according to the placement position of the main body consisting of the exhaust element and the stop valve;

(3) According to different requirements on the modification degree of the closestool and the modification of the production flow and the die, the method can be divided into the modification of the preset via hole and the exhaust interface of the die and the pre-punching of the via hole and the exhaust interface of the existing model.

The following will explain one by one:

the technical problem to be solved by the invention can be further solved by the following technical scheme that the gas inlet of the gas collecting pipeline is a single-pipe gas inlet type, the diameter of the gas inlet end of the gas collecting pipeline is slightly larger than that of the overflow pipe of the toilet, the gas inlet of the gas collecting pipeline is sleeved on the overflow pipe in the water tank of the toilet when the gas collecting pipeline is installed, and the gas inlet of the gas collecting pipeline extends to be close to the bottom of the water tank; when water is in the water tank, the gap between the two pipes is sealed by water, so that the gas in the cavity of the toilet can be effectively extracted, when water is temporarily not in the water tank after flushing, the gas is timely supplied to the overflow pipe through the gap between the two pipes, when the water level is too high, the gap between the two pipes can also be used as an overflow channel, and after the flushing is finished, the water level slightly rises, and the gap can be immediately sealed to recover the air extraction function.

The invention further solves the technical problems by adopting the following technical scheme that the gas collection inlet of the gas collecting pipeline is a single-pipe gas inlet and is formed by two parallel pipelines, a first pipeline is in sealed connection with the overflow pipe in the toilet water tank during installation, the other parallel pipeline is inserted in the water tank in the same direction and is close to the bottom of the water tank below the water surface, so that the gas in the toilet cavity can be extracted from the gas inlet, when the water tank is temporarily free of water after flushing, the second pipeline can timely supplement gas for the overflow pipe, when the water level is too high, the gas collection inlet can also be used as an overflow channel, after the flushing is finished, the water level is slightly raised, the inlet of the second pipeline can be immediately sealed, the gas discharge function can be recovered, and the two pipelines can be used interchangeably.

According to the technical scheme, the gas collecting pipeline gas inlet is a single-pipe gas inlet or a double-pipe gas inlet, the top of the inlet corresponding to the overflow port is provided with a water supplementing pipe interface which can be started at any time, and a water supplementing pipe which is originally inserted into the overflow pipe in the toilet water tank can be inserted through the water supplementing pipe inlet, so that the original water supplementing function is realized; when the gas collection inlet end of the gas collecting pipeline is single-hole, the gas collecting pipeline is directly spliced, and when the gas collecting pipeline is double-pipe, the gas collecting pipeline is spliced in the water supplementing pipe inlet at the top of the pipeline correspondingly connected with the overflow pipe.

The technical problem to be solved by the invention can be further solved by the following technical scheme, and the filter screen is arranged in the gas collecting inlet of the gas collecting pipeline to prevent foreign matters from entering.

The technical problem to be solved by the invention can be further solved by the following technical scheme that the exhaust element is a power device for exhausting gas, so that the collection and the elimination of odor can be realized; the stop valve is a switch device of the exhaust channel, and when no one uses the closestool, the stop valve is in an elastic normally-closed state so as to prevent the reverse channeling of odor; the valve controller is a device for forcedly closing the stop valve, and can timely close the pipeline when the toilet is flushed, so as to ensure that the toilet sewage pipeline has good siphon water-saving effect; wherein, the valve controller is directly connected with the valve plate of the stop valve; the shut-off valve and the exhaust element may be arranged in any order and together form the main body of the exhaust device according to the invention.

The technical problem to be solved by the invention can be further solved by the following technical scheme that the main body formed by the stop valve and the exhaust element of the exhaust device is provided with a waterproof package and can be arranged inside or outside the toilet water tank according to the requirement; when the main body is placed in the toilet water tank, the exhaust pipe passes through the bottom of the water tank through the sealing ring to extend out of the toilet, and the other end of the exhaust pipe is connected with the exhaust interface; when the main body is arranged outside the closestool, one section of the gas collecting pipeline is connected with the gas collecting interface, the other end of the gas collecting pipeline penetrates through the bottom of the water tank through the sealing ring to extend out of the closestool and is connected with the main body, and the other end of the main body is connected with the exhaust pipeline.

Embodiment one: retrofitting existing toilets and single tube air intake forms

The improved toilet is characterized in that diamond drills are used for punching holes at the bottom of a toilet water tank and proper positions of a siphon pipe, as shown in fig. 9, holes are respectively punched at the bottom of the water tank and the sewage siphon pipe, and the actual positions are shown as an improved water tank through hole 6-1 and an improved siphon pipe exhaust interface 6-2.

The specific installation mode is that referring to fig. 1 and 2, an exhaust device comprises an exhaust main pipe 1-1; a liquid outflow pipe 1-2; control host 1-3; human body sensor 1-4; 1-5 parts of power supply; a flow detection module; the exhaust main pipe 1-1 comprises a gas collecting pipeline 1, an exhaust element 2, a stop valve 3, a valve controller 7, a liquid flow detection sensor 5, an exhaust pipeline 4 and a sealing ring 6; the liquid flow detection module comprises a liquid flow detection sensor 5 and liquid flow detection circuits 1-6, and the liquid flow detection sensor and the liquid flow detection circuits are connected in a wired or wireless mode; the method is characterized in that: the liquid flow detection circuit 1-6, the exhaust element 2, the valve controller 7 and the human body sensor 1-4 are respectively connected with the control host 1-3; one end of the gas collecting pipeline 1 is used as a gas inlet, an exhaust element 2 and a stop valve 3 are connected in series between the other end of the gas collecting pipeline and the exhaust pipeline 4, the tail end of the exhaust pipeline 4 is an exhaust port, a valve controller 7 is positioned in a cavity of the stop valve 3, and a liquid flow detection sensor 5 is arranged at the inner side of the tail end of the exhaust port of the exhaust pipeline 4.

The specific implementation mode is as follows: the air inlet of the air collecting pipeline 1 is a single-pipe air inlet, the pipe diameter of the air inlet is slightly larger than that of the overflow pipe of the closestool, the air inlet of the air collecting pipeline 1 is connected with the overflow pipe in the water tank of the closestool, a gap is formed between the two pipes, when the water is not flushed, the gap is closed by water, the air in the overflow pipe can be pumped by the air inlet, when the water is flushed, the gap between the two pipes can be used for supplementing air for a flushing channel, and when the water level is too high, the gap is used as the overflow pipe; the other end of the gas collecting pipeline 1 is connected with a main body consisting of an exhaust element 2 and a stop valve 3, the other end of the main body is connected to an exhaust pipeline 4, the exhaust pipeline 4 extends out of the toilet through a through hole at the bottom of the toilet water tank through a sealing ring 6, and the other end of the exhaust pipeline 4 is communicated with a siphon pipeline of the toilet.

Wherein the valve controller 7 is connected with the stop valve 3; the control host 1-3 controls the action of the exhaust element 2 or the valve controller 7 according to the information transmitted by the human body sensor 1-4 or the liquid flow detection module; the exhaust element 2 is opened to exhaust when people exist, the stop valve 3 is closed when water is flushed, and the siphon effect of the siphon pipeline of the closestool is ensured.

The concrete effects are as follows: when the human body sensor 1-4 detects that a person exists, the control host 1-3 opens the exhaust element 2, the gas collecting pipeline 1 extracts gas from the overflow port of the toilet, the gas in the cavity of the toilet enters the gas collecting pipeline 1 through the flushing hole and the flushing channel along the inner edge of the toilet, the stop valve 3 is passively opened under the action of air pressure, and the gas enters the exhaust pipeline 4 through the valve and is then discharged into a sewer; when the toilet is flushed, no matter the water tank button is pressed or water is directly poured into the toilet, the liquid flow detection module sends a flushing signal to the control host 1-3, and the control host 1-3 immediately controls the valve controller 7 to close the stop valve closing pipeline, so that the tightness of the siphon pipeline is ensured, and the operation of the exhaust element 2 is stopped; when the water flow signal disappears, the control host controls the valve controller 7 to release the stop valve to be in an elastic normally-closed state, the operation of the exhaust element 2 is restored, and the stop valve 3 is passively opened under wind pressure to allow the air flow to pass through.

Embodiment two: retrofitting existing toilets with dual pipe air intake forms

The reforming toilet means to punch holes at the bottom of the toilet tank and the proper position of the siphon tube by using diamond drills, as shown in fig. 9, into reforming tank through holes 6-1 and reforming siphon tube exhaust ports 6-2, respectively.

The specific implementation mode is as follows: the gas collecting pipeline 1 is a double-pipe gas inlet, a first gas inlet of two gas inlets of the gas collecting pipeline 1 is hermetically connected with an overflow pipe in a toilet water tank, when no flushing is performed, a second gas inlet extends downwards in the same direction below the water surface, gas in the overflow pipe can be pumped by the gas collecting pipeline 1, when flushing is performed, the second gas inlet is suspended and can be used as a gas supplementing port of a flushing pipeline, and when the water level is too high, the second gas inlet is used as an overflow pipeline; the other end is connected with the main body that constitutes by exhaust component 2 and stop valve 3, the other end of main body is connected to exhaust pipe 4, and exhaust pipe 4 passes through sealing washer 6 and extends outside the closestool through the via hole of closestool water tank bottom, and the other end of exhaust pipe 4 communicates with the siphon pipeline of closestool.

The concrete effects are as follows: when the human body sensor 1-4 detects that a person exists, the control host 1-3 opens the exhaust element 2, the gas collecting pipeline 1 extracts gas from the overflow port of the toilet, the gas in the cavity of the toilet enters the gas collecting pipeline 1 through the flushing hole and the flushing channel along the inner edge of the toilet, the stop valve 3 is passively opened under the action of air pressure, and the gas enters the exhaust pipeline 4 through the valve and is then discharged into a sewer; when the toilet is flushed, no matter the water tank button is pressed or water is directly poured into the toilet, the liquid flow detection module sends a flushing signal to the control host 1-3, and the control host 1-3 immediately controls the valve controller 7 to close the stop valve 3 to close the pipeline, ensure the tightness of the siphon pipeline and stop the operation of the exhaust element 2; when the water flow signal disappears, the control host controls the valve controller 7 to release the stop valve 3 to be in an elastic normally-closed state, the operation of the exhaust element 2 is restored, and the stop valve 3 is passively opened under wind pressure to allow the air flow to pass through.

Embodiment III: reform transform current closestool and main part external form

The above embodiments for retrofitting the existing toilet are all in the form of placing the body composed of the exhaust element 2 and the shut-off valve 3 in the water tank, and the present embodiment is in the form of being placed outside the toilet.

Similarly, the reforming toilet means to punch holes at the bottom of the toilet tank and the proper position of the siphon tube using diamond drills, as shown in fig. 9, into the reforming tank through hole 6-1 and the reforming siphon tube exhaust port 6-2, respectively.

The specific implementation mode is as follows: the air inlet of the gas collecting pipeline 1 is connected with an overflow pipe in a toilet water tank, the other end of the gas collecting pipeline is connected with a main body formed by an exhaust element 2 and a stop valve 3, and the other end of the main body is connected to an exhaust pipeline 4; in the embodiment, the main body is arranged outside the closestool, the gas collecting pipeline 1 extends out of the closestool through the through hole at the bottom of the closestool water tank through the sealing ring 6, is connected with the main body, is then connected with the exhaust pipeline 4, and the other end of the exhaust pipeline 4 is then communicated with the siphon pipeline of the closestool;

Embodiment four: simple exhaust device embodiment in the form of a toilet preset interface

The embodiment about reforming the existing closestool adopts the implementation form of reforming the closestool by later punching, and the embodiment combines the production process of the closestool, and the purpose of conveniently installing the exhaust device is realized by slightly improving the closestool die.

The simple type exhaust deodorizing closestool comprises a closestool body and a water tank, wherein an external through hole is formed in the bottom of the water tank, an exhaust port 4-1 at the bottom of a siphon or an exhaust port 4-2 of a pollution discharge cavity is formed in the bottom of the water tank, a water inlet piece, a water flushing piece and a simple type exhaust device are arranged in the water tank, and the simple type exhaust deodorizing closestool comprises an exhaust main pipe 1-1; a liquid outflow pipe 1-2; control host 1-3; human body sensor 1-4; 1-5 parts of power supply; a flow detection module; the exhaust main pipe 1-1 comprises a gas collecting pipeline 1, an exhaust element 2, a stop valve 3, a liquid flow detection sensor 5, an exhaust pipeline 4 and a sealing ring 6; the liquid flow detection module comprises a liquid flow detection sensor 5 and liquid flow detection circuits 1-6, and the liquid flow detection sensor and the liquid flow detection circuits are connected in a wired or wireless mode; the method is characterized in that: the liquid flow detection circuit 1-6, the exhaust element 2 and the human body sensor 1-4 are respectively connected with the control host 1-3; one end of the gas collecting pipeline 1 is used as a gas inlet, an exhaust element 2 and a stop valve 3 are connected in series between the other end of the gas collecting pipeline and the exhaust pipeline 4, the tail end of the exhaust pipeline 4 is a gas outlet, and the liquid flow detection sensor 5 is arranged on the inner side of the tail end of the gas outlet of the exhaust pipeline 4.

The specific implementation mode is as follows: the air inlet of the gas collecting pipeline 1 is connected with an overflow pipe in a toilet water tank, the other end of the gas collecting pipeline is connected with a main body formed by an exhaust element 2 and a stop valve 3, and the other end of the main body is connected to an exhaust pipeline 4; in this embodiment, the main body is placed outside the toilet, and the gas collecting pipe 1 extends to the outside of the toilet through the via hole at the bottom of the toilet water tank via the sealing ring 6, and then is connected with the main body, and is further connected with the exhaust pipe 4, and the other end of the exhaust pipe 4 is further communicated with the siphon pipe of the toilet.

The control host 1-3 controls the action of the exhaust element 2 according to the information transmitted by the human body sensor 1-4 or the liquid flow detection module, so as to open the exhaust element 2 for exhaust when people exist.

The concrete effects are as follows: when the human body sensor 1-4 detects that a person exists, the control host 1-3 opens the exhaust element 2, the gas collecting pipeline 1 extracts gas from the overflow port of the toilet, the gas in the cavity of the toilet enters the gas collecting pipeline 1 through the flushing hole and the flushing channel along the inner edge of the toilet, the stop valve 3 is passively opened under the action of air pressure, and the gas enters the exhaust pipeline 4 through the valve and is then discharged into a sewer; when the toilet is flushed, the liquid flow detection module sends a flushing signal to the control host 1-3 to stop the operation of the exhaust element 2 no matter the water tank button is pressed or water is directly poured into the toilet; when the water flow signal disappears, the control host resumes the operation of the exhaust element 2, and the stop valve 3 is passively opened under wind pressure to allow the air flow to pass through.

By adopting the improved closestool, the odor in the cavity of the closestool can be collected through the inner edge flushing port of the closestool by adopting the simple exhaust device, and enters the closestool exhaust deodorizing device related to the invention through the overflow pipeline to be finally discharged into a sewer, so that a valve controller is omitted and no influence is caused on a siphon.

Fifth embodiment: extremely simple exhaust device embodiment in the form of a toilet preset interface

The above embodiments about modifying the existing toilet are all embodiments of modifying the toilet by adopting the later-stage punching and combining the production process of the toilet, and the embodiment of conveniently and simply installing the exhaust device is realized by slightly improving the toilet mold. In this embodiment, an embodiment of a very simple venting device based on a preset toilet interface is further described.

The simple type exhaust deodorizing closestool comprises a closestool body and a water tank, wherein an external through hole is formed in the bottom of the water tank, an exhaust port 4-1 at the bottom of a siphon or an exhaust port 4-2 of a pollution discharge cavity is formed in the bottom of the water tank, a water inlet piece, a water flushing piece and an extremely simple type exhaust device are arranged in the water tank, and the simple type exhaust deodorizing closestool comprises an exhaust main pipe 1-1; a liquid outflow pipe 1-2; control host 1-3; human body sensor 1-4; 1-5 parts of power supply; the exhaust main pipe 1-1 comprises a gas collecting pipeline 1, an exhaust element 2, a stop valve 3, an exhaust pipeline 4 and a sealing ring 6; the method is characterized in that: the exhaust element 2, the human body sensor 1-4 is connected with the control host 1-3 respectively; one end of the gas collecting pipeline 1 is used as a gas inlet, an exhaust element 2 and a stop valve 3 are connected in series between the other end of the gas collecting pipeline and the exhaust pipeline 4, and the tail end of the exhaust pipeline 4 is provided with a gas outlet.

The concrete effects are as follows: when the human body sensor 1-4 detects that a person exists, the control host 1-3 opens the exhaust element 2, the gas collecting pipeline 1 extracts gas from the overflow port of the toilet, the gas in the cavity of the toilet enters the gas collecting pipeline 1 through the flushing hole and the flushing channel along the inner edge of the toilet, the stop valve 3 is passively opened under the action of air pressure, and the gas enters the exhaust pipeline 4 through the valve and is then discharged into a sewer.

By adopting the improved closestool, the odor in the cavity of the closestool can be collected along the flushing port in the closestool through the extremely simple exhaust device, and enters the closestool exhaust deodorizing device related by the invention through the overflow pipeline to be finally discharged into a sewer.

According to the above description, in the specific implementation manner of the toilet exhaust deodorizing device according to the present invention, the air inlet of the gas collecting pipe 1 may be a single-pipe air inlet or a double-pipe air inlet; the valve controller 7 included in the exhaust device of the invention, the main body composed of the stop valve 3 and the exhaust element 2 can be arranged in the toilet water tank or outside the toilet water tank; the liquid flow detection sensor 5 of the liquid flow detection module is a float magnetic force switch type, or an electrode sensing type, or a microwave reflection type; the outlet of the exhaust pipe can be connected to the siphon of the closestool, or is preset at a position close to the sewage outlet and not influencing the siphon, or an outdoor or bathroom exhaust channel can realize any application scene; if a mode of optimizing and reforming a toilet mold in a production link is adopted, a through hole at the bottom of a water tank and an exhaust port close to the bottom of a sewage pipeline are reserved on a toilet, an exhaust main pipe of the exhaust device can only comprise a stop valve 3 and an exhaust element 2, and a main body consisting of the stop valve 3 and the exhaust element 2 can be arranged in or outside the toilet water tank; the outlet of the exhaust pipe can be connected to an exhaust port of the closestool close to the bottom of the sewage pipeline, or an outdoor or bathroom exhaust channel, so that a more economic implementation form can be realized, and the requirements of all application scenes can be met; therefore, after various forms of the exhaust device are flexibly combined, the exhaust device can achieve the expected function and can adapt to various application scenes.

In conclusion, the invention has simple structure, flexible and convenient implementation mode, can realize high-efficiency exhaust without influencing siphon drainage, can be used for upgrading and reforming various common toilets, and can also be combined with a new toilet needing to be optimized and reformed to implement a more economical solution.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, other obvious variants of the invention mentioned but not claimed and variants which can be obtained without inventive effort by the person skilled in the art are not surprising to the inventors and applicant.

The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the invention, but any minor modifications, equivalents, and improvements made to the above embodiments according to the technical principles of the present invention should be included in the scope of the technical solutions of the present invention.

Claims

1. The exhaust device comprises an exhaust main pipe, a liquid outflow pipe and a control host, wherein an exhaust port of the exhaust main pipe is communicated with the side wall of the liquid outflow pipe, and an exhaust element, a stop valve, a valve controller and a liquid flow detection module are arranged in the exhaust main pipe;

when the liquid flow detection module detects that liquid flow occurs in the liquid outflow pipe, the control host controls the valve controller to close the stop valve and the exhaust element to stop working; when the liquid flow detection module detects that liquid flow in the liquid outflow pipe disappears, the control host controls the valve controller to release the stop valve, the exhaust element is started and stops after a time delay operation is carried out for a designated time;

The exhaust device also comprises a human body sensor; the human body sensor sends out a human signal when detecting that a person exists, and the control host starts the exhaust element at the moment; the human body sensor sends out an unmanned signal when detecting that a person leaves, and the control host controls the exhaust element to stop after a time delay operation is carried out for a specified time; in the detection process of the human body sensor, no matter whether the human body sensor sends out a human signal or an unmanned signal, the control host immediately stops the work of the air exhaust element and prohibits the start as long as the liquid flow detection module detects the liquid flow in the liquid outflow pipe, and when the liquid flow detection module detects the disappearance of the liquid flow in the liquid outflow pipe, the control host starts the air exhaust element to work and works according to the state of the human signal or the unmanned signal sent by the human body sensor;

the stop valve comprises a valve body, a valve plate and a spring, wherein the valve plate slides forwards and backwards under the action of the spring and is in an elastic normally closed state at ordinary times, the valve plate can be passively opened when the exhaust element works, and otherwise, the valve plate is in an automatic closing state;

the air inlet of the air collecting pipeline is connected with an overflow pipe in the toilet water tank, the liquid outflow pipe is a toilet siphon pipe or a sewer drain pipe, and the axis of the pipeline where the air outlet of the air exhaust pipeline is connected with the liquid outflow pipe is inclined downwards to form an included angle of 5-175 degrees with the horizontal direction; a filter screen is arranged in the gas collecting pipeline.

2. The exhaust of claim 1, wherein the flow detection module comprises a flow detection circuit and a flow detection sensor, the flow detection sensor being disposed inside the exhaust port end.

3. The vent of claim 2, wherein the flow detection sensor is a float magnetic switch, or an electrode sensor, or a microwave reflective, or a mechanical touch.

4. An exhaust device according to any one of claims 1 to 3, wherein the exhaust element is a fan or a vacuum suction device.

5. An exhaust device according to any one of claims 1 to 3, wherein the main exhaust pipe comprises a gas collecting duct and an exhaust duct, the gas collecting duct and the exhaust duct being connected in series.

6. The exhaust device according to claim 5, wherein one end of the gas collecting pipe is an air inlet, the other end of the gas collecting pipe is connected in series with the exhaust pipe, and the exhaust element, the stop valve, the valve controller and the liquid flow detection module are sequentially arranged in the exhaust pipe along the direction from the air inlet of the gas collecting pipe to the air outlet of the exhaust pipe.

7. The exhaust apparatus as claimed in claim 6, wherein the flow detection module and the human body sensor are connected to the control main unit by wire or wireless means; the valve controller is positioned in the cavity of the stop valve.

8. The exhaust apparatus as claimed in claim 7, wherein a gap exists between the air inlet of the air collecting pipe and the overflow pipe in the toilet tank, the gap is closed by water when not flushing, the air inlet draws air in the overflow pipe, and the gap supplements air for the flushing channel when flushing, and serves as the overflow pipe when the water level is too high.

9. The exhaust device of claim 8, wherein a sealing ring is arranged outside the exhaust pipeline, the sealing ring is arranged on a through hole at the bottom of the toilet water tank, and an exhaust port of the exhaust pipeline is communicated with the toilet siphon pipeline.

10. The exhaust device as claimed in claim 8, wherein the gas collecting pipe is a double pipe gas inlet, a first gas inlet of the two gas collecting pipe gas inlets is hermetically connected with the overflow pipe in the toilet water tank, and when not flushing, the second gas inlet extends downwards below the water surface of the toilet water tank in the same direction, and the gas collecting pipe extracts gas in the overflow pipe; when flushing, the second air inlet is suspended to serve as an air supplementing port of the flushing pipeline, and serves as a water overflow pipeline when the water level is too high.

11. A toilet using the vent device according to any one of claims 1-3, 6-10, wherein a vent hole of the vent device is reserved at the bottom of the toilet tank; and an interface of the exhaust port is reserved at the position, close to the sewage outlet, of the closestool.

12. A method for using the exhaust device according to claim 1, characterized in that when the human body sensor detects that a person exists, a control host machine sends out a person signal, a control host machine opens an exhaust element, a gas collecting pipeline extracts gas from an overflow port of a toilet, the gas in a cavity of the toilet enters the gas collecting pipeline through a flushing hole and a flushing channel along the inner edge of the toilet, a stop valve is passively opened under the action of air pressure, and the gas enters the exhaust pipeline through the stop valve and is then discharged into a sewer; when the closestool is flushed, no matter the water tank button is pressed or water is directly poured into the closestool, the liquid flow detection module can detect the occurrence of liquid flow, the control host immediately controls the valve controller to close the stop valve closing pipeline, the tightness of the siphon pipeline is ensured, and the operation of the exhaust element is stopped; when the liquid flow detection module detects that liquid flow disappears, the control host controls the valve controller to release the stop valve to be in an elastic normally-closed state, and the exhaust element is started to work, and the stop valve is passively opened under wind pressure to allow the air flow to pass through.